since windows containers are not supported, all code moved inside NSWebPage

36 files changed, 0 insertions, 33696 deletions

diff --git a/libs/litehtml/containers/cairo/cairo_borders.cpp b/libs/litehtml/containers/cairo/cairo_borders.cpp
deleted file mode 100644
index 21ae6db4cd..0000000000
--- a/libs/litehtml/containers/cairo/cairo_borders.cpp
+++ /dev/null
@@ -1,342 +0,0 @@
-#include <litehtml.h>
-#include "cairo_borders.h"
-#include <cmath>
-
-#ifndef M_PI
-#       define M_PI    3.14159265358979323846
-#endif
-
-void cairo::add_path_arc(cairo_t* cr, double x, double y, double rx, double ry, double a1, double a2, bool neg)
-{
-	if(rx > 0 && ry > 0)
-	{
-		cairo_save(cr);
-
-		cairo_translate(cr, x, y);
-		cairo_scale(cr, 1, ry / rx);
-		cairo_translate(cr, -x, -y);
-
-		if(neg)
-		{
-			cairo_arc_negative(cr, x, y, rx, a1, a2);
-		} else
-		{
-			cairo_arc(cr, x, y, rx, a1, a2);
-		}
-
-		cairo_restore(cr);
-	} else
-	{
-		cairo_move_to(cr, x, y);
-	}
-}
-
-/**
- * Draw border at the left side. Use the only function to draw all border by using rotation transfer
- * @param cr cairo context
- * @param left left position of the border
- * @param top top position of the border
- * @param bottom bottom position of the border
- * @param data border data
- */
-void cairo::border::draw_border()
-{
-	cairo_save(cr);
-
-	if(radius_top_x && radius_top_y)
-	{
-		double start_angle	= M_PI;
-		double end_angle	= start_angle + M_PI / 2.0  / ((double) top_border_width / (double) border_width + 1);
-
-		add_path_arc(cr,
-					 left + radius_top_x,
-					 top + radius_top_y,
-					 radius_top_x - border_width,
-					 radius_top_y - border_width + (border_width - top_border_width),
-					 start_angle,
-					 end_angle, false);
-
-		add_path_arc(cr,
-					 left + radius_top_x,
-					 top + radius_top_y,
-					 radius_top_x,
-					 radius_top_y,
-					 end_angle,
-					 start_angle, true);
-	} else
-	{
-		cairo_move_to(cr, left + border_width, top + top_border_width);
-		cairo_line_to(cr, left, top);
-	}
-
-	if(radius_bottom_x && radius_bottom_y)
-	{
-		cairo_line_to(cr, left, bottom - radius_bottom_y);
-
-		double end_angle	= M_PI;
-		double start_angle	= end_angle - M_PI / 2.0  / ((double) bottom_border_width / (double) border_width + 1);
-
-		add_path_arc(cr,
-					 left + radius_bottom_x,
-					 bottom - radius_bottom_y,
-					 radius_bottom_x,
-					 radius_bottom_y,
-					 end_angle,
-					 start_angle, true);
-
-		add_path_arc(cr,
-					 left + radius_bottom_x,
-					 bottom - radius_bottom_y,
-					 radius_bottom_x - border_width,
-					 radius_bottom_y - border_width + (border_width - bottom_border_width),
-					 start_angle,
-					 end_angle, false);
-	} else
-	{
-		cairo_line_to(cr, left,	bottom);
-		cairo_line_to(cr, left + border_width, bottom - bottom_border_width);
-	}
-	cairo_clip(cr);
-
-	switch (style)
-	{
-		case litehtml::border_style_dotted:
-			draw_dotted();
-			break;
-		case litehtml::border_style_dashed:
-			draw_dashed();
-			break;
-		case litehtml::border_style_double:
-			draw_double();
-			break;
-		case litehtml::border_style_inset:
-			draw_inset_outset(true);
-			break;
-		case litehtml::border_style_outset:
-			draw_inset_outset(false);
-			break;
-		case litehtml::border_style_groove:
-			draw_groove_ridge(true);
-			break;
-		case litehtml::border_style_ridge:
-			draw_groove_ridge(false);
-			break;
-		default:
-			draw_solid();
-			break;
-	}
-
-	cairo_restore(cr);
-}
-
-void cairo::border::draw_line(double line_offset, double top_line_offset, double bottom_line_offset)
-{
-	if(radius_top_x && radius_top_y)
-	{
-		double end_angle = M_PI;
-		double start_angle	= end_angle + M_PI / 2.0  / ((double) top_border_width / (double) border_width + 1);
-
-		add_path_arc(cr,
-					 left + radius_top_x,
-					 top + radius_top_y,
-					 radius_top_x - line_offset,
-					 radius_top_y - line_offset + (line_offset - top_line_offset),
-					 start_angle,
-					 end_angle, true);
-	} else
-	{
-		cairo_move_to(cr, left + line_offset, top);
-	}
-
-	if(radius_bottom_x && radius_bottom_y)
-	{
-		cairo_line_to(cr, left + line_offset, bottom - radius_bottom_y);
-
-		double start_angle	= M_PI;
-		double end_angle	= start_angle - M_PI / 2.0  / ((double) bottom_border_width / (double) border_width + 1);
-
-		add_path_arc(cr,
-					 left + radius_bottom_x,
-					 bottom - radius_bottom_y,
-					 radius_bottom_x - line_offset,
-					 radius_bottom_y - line_offset + (line_offset - bottom_line_offset),
-					 start_angle,
-					 end_angle, true);
-	} else
-	{
-		cairo_line_to(cr, left + line_offset, bottom);
-	}
-}
-
-void cairo::border::draw_inset_outset(bool is_inset)
-{
-	litehtml::web_color line_color;
-	litehtml::web_color light_color = color;
-	litehtml::web_color dark_color = color.darken(0.33);
-	if(color.red == 0 && color.green == 0 && color.blue == 0)
-	{
-		dark_color.red = dark_color.green = dark_color.blue = 0x4C;
-		light_color.red = light_color.green = light_color.blue = 0xB2;
-	}
-
-	if (real_side == left_side || real_side == top_side)
-	{
-		line_color = is_inset ? dark_color : light_color;
-	} else
-	{
-		line_color = is_inset ? light_color : dark_color;
-	}
-	draw_line(border_width / 2.0,
-			  top_border_width / 2.0,
-			  bottom_border_width / 2.0);
-	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
-	cairo_set_dash(cr, nullptr, 0, 0);
-	set_color(cr, line_color);
-	cairo_set_line_width(cr, border_width);
-	cairo_stroke(cr);
-}
-
-void cairo::border::draw_double()
-{
-	if (border_width < 3)
-	{
-		draw_solid();
-	} else
-	{
-		cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
-		cairo_set_dash(cr, nullptr, 0, 0);
-		set_color(cr, color);
-
-		double line_width = border_width / 3.0;
-		cairo_set_line_width(cr, line_width);
-		// draw external line
-		draw_line(line_width / 2.0,
-				  top_border_width / 6.0,
-				  bottom_border_width / 6.0);
-		cairo_stroke(cr);
-		// draw internal line
-		draw_line(border_width - line_width / 2.0,
-				  top_border_width - top_border_width / 6.0,
-				  bottom_border_width - bottom_border_width / 6.0);
-		cairo_stroke(cr);
-	}
-}
-
-void cairo::border::draw_dashed()
-{
-	draw_line(border_width / 2.0,
-			  top_border_width / 2.0,
-			  bottom_border_width / 2.0);
-
-	int line_length = std::abs(bottom - top);
-	int segment_length = border_width * 3;
-	int seg_nums = line_length / segment_length;
-	if(seg_nums < 2)
-	{
-		seg_nums = 2;
-	} if(seg_nums % 2 != 0)
-	{
-		seg_nums = seg_nums + 1;
-	}
-	seg_nums++;
-	double seg_len = (double) line_length / (double) seg_nums;
-
-	double dashes[2];
-	dashes[0] = seg_len;
-	dashes[1] = seg_len;
-	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
-	cairo_set_dash(cr, dashes, 2, 0);
-	set_color(cr, color);
-	cairo_set_line_width(cr, border_width);
-	cairo_stroke(cr);
-}
-
-void cairo::border::draw_solid()
-{
-	draw_line(border_width / 2.0,
-			  top_border_width / 2.0,
-			  bottom_border_width / 2.0);
-	cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
-	cairo_set_dash(cr, nullptr, 0, 0);
-	set_color(cr, color);
-	cairo_set_line_width(cr, border_width);
-	cairo_stroke(cr);
-}
-
-void cairo::border::draw_dotted()
-{
-	draw_line(border_width / 2.0,
-			  top_border_width / 2.0,
-			  bottom_border_width / 2.0);
-
-	double line_length = std::abs(bottom - top);
-
-	double dot_size = border_width;
-	int num_dots = (int) std::nearbyint(line_length / (dot_size * 2.0));
-	if(num_dots < 2)
-	{
-		num_dots = 2;
-	} if(num_dots % 2 != 0)
-	{
-		num_dots = num_dots + 1;
-	}
-	num_dots++;
-	double space_len = ((double) line_length - (double) border_width) / (num_dots - 1.0);
-
-	double dashes[2];
-	dashes[0] = 0;
-	dashes[1] = space_len;
-	cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND);
-	cairo_set_dash(cr, dashes, 2, -dot_size / 2.0);
-
-	set_color(cr, color);
-	cairo_set_line_width(cr, border_width);
-	cairo_stroke(cr);
-}
-
-void cairo::border::draw_groove_ridge(bool is_groove)
-{
-	if(border_width == 1)
-	{
-		draw_solid();
-	} else
-	{
-		litehtml::web_color inner_line_color;
-		litehtml::web_color outer_line_color;
-		litehtml::web_color light_color = color;
-		litehtml::web_color dark_color = color.darken(0.33);
-		if (color.red == 0 && color.green == 0 && color.blue == 0)
-		{
-			dark_color.red = dark_color.green = dark_color.blue = 0x4C;
-			light_color.red = light_color.green = light_color.blue = 0xB2;
-		}
-
-		if (real_side == left_side || real_side == top_side)
-		{
-			outer_line_color = is_groove ? dark_color : light_color;
-			inner_line_color = is_groove ? light_color : dark_color;
-		} else
-		{
-			outer_line_color = is_groove ? light_color : dark_color;
-			inner_line_color = is_groove ? dark_color : light_color;
-		}
-
-		cairo_set_line_cap(cr, CAIRO_LINE_CAP_BUTT);
-		cairo_set_dash(cr, nullptr, 0, 0);
-
-		double line_width = border_width / 2.0;
-		cairo_set_line_width(cr, line_width);
-		// draw external line
-		draw_line(line_width / 2.0,
-				  top_border_width / 4.0,
-				  bottom_border_width / 4.0);
-		set_color(cr, outer_line_color);
-		cairo_stroke(cr);
-		// draw internal line
-		set_color(cr, inner_line_color);
-		draw_line(border_width - line_width / 2.0,
-				  top_border_width - top_border_width / 4.0,
-				  bottom_border_width - bottom_border_width / 4.0);
-		cairo_stroke(cr);
-	}
-}
diff --git a/libs/litehtml/containers/cairo/cairo_borders.h b/libs/litehtml/containers/cairo/cairo_borders.h
deleted file mode 100644
index 1bf18d6056..0000000000
--- a/libs/litehtml/containers/cairo/cairo_borders.h
+++ /dev/null
@@ -1,69 +0,0 @@
-#ifndef LITEHTML_CAIRO_BORDERS_H
-#define LITEHTML_CAIRO_BORDERS_H
-
-#include <cairo.h>
-
-namespace cairo
-{
-	extern void add_path_arc(cairo_t* cr, double x, double y, double rx, double ry, double a1, double a2, bool neg);
-	inline void set_color(cairo_t* cr, const litehtml::web_color& color)
-	{
-		cairo_set_source_rgba(cr, color.red / 255.0, color.green / 255.0, color.blue / 255.0, color.alpha / 255.0);
-	}
-
-	class border
-	{
-	public:
-		enum real_side_t
-		{
-			left_side,
-			top_side,
-			right_side,
-			bottom_side
-		};
-
-		real_side_t real_side;			/// real side of the border
-		litehtml::web_color color;
-		litehtml::border_style style;
-
-		int border_width;
-		int top_border_width;
-		int bottom_border_width;
-
-		int radius_top_x;
-		int radius_top_y;
-		int radius_bottom_x;
-		int radius_bottom_y;
-
-		border(cairo_t* _cr, int _left, int _top, int _bottom) :
-				real_side(left_side),
-				color(),
-				style(litehtml::border_style_none),
-				border_width(0),
-				top_border_width(0),
-				bottom_border_width(0),
-				radius_top_x(0),
-				radius_top_y(0),
-				radius_bottom_x(0),
-				radius_bottom_y(0),
-				cr(_cr), left(_left), top(_top), bottom(_bottom)
-		{}
-
-		void draw_border();
-
-	private:
-		cairo_t* cr;
-		int left;
-		int top;
-		int bottom;
-		void draw_line(double line_offset, double top_line_offset, double bottom_line_offset);
-		void draw_solid();
-		void draw_dotted();
-		void draw_dashed();
-		void draw_double();
-		void draw_inset_outset(bool is_inset);
-		void draw_groove_ridge(bool is_groove);
-	};
-}
-
-#endif //LITEHTML_CAIRO_BORDERS_H
diff --git a/libs/litehtml/containers/cairo/cairo_images_cache.h b/libs/litehtml/containers/cairo/cairo_images_cache.h
deleted file mode 100644
index bbf2d21368..0000000000
--- a/libs/litehtml/containers/cairo/cairo_images_cache.h
+++ /dev/null
@@ -1,91 +0,0 @@
-#ifndef LITEHTML_CAIRO_IMAGES_CACHE_H
-#define LITEHTML_CAIRO_IMAGES_CACHE_H
-
-#include <mutex>
-#include <map>
-#include <string>
-#include <cairo.h>
-
-class cairo_surface_wrapper
-{
-	cairo_surface_t* surface;
-public:
-	cairo_surface_wrapper() : surface(nullptr) {}
-	cairo_surface_wrapper(const cairo_surface_wrapper& v) : surface(v.surface)
-	{
-		if(v.surface)
-		{
-			surface = cairo_surface_reference(v.surface);
-		}
-	}
-	explicit cairo_surface_wrapper(cairo_surface_t* v) : surface(v) {}
-	cairo_surface_wrapper(cairo_surface_wrapper&& v) noexcept
-	{
-		surface = v.surface;
-		v.surface = nullptr;
-	}
-	cairo_surface_wrapper& operator=(const cairo_surface_wrapper& v)
-	{
-		if(surface != v.surface)
-		{
-			if(surface)
-			{
-				cairo_surface_destroy(surface);
-			}
-			surface = cairo_surface_reference(v.surface);
-		}
-		return *this;
-	}
-	~cairo_surface_wrapper()
-	{
-		if(surface)
-		{
-			cairo_surface_destroy(surface);
-		}
-	}
-	cairo_surface_t* get() { return cairo_surface_reference(surface); }
-};
-
-class cairo_images_cache
-{
-	std::mutex m_mutex;
-	std::map<std::string, cairo_surface_wrapper> m_images;
-public:
-	void add_image(const std::string& url, cairo_surface_t* image)
-	{
-		std::unique_lock<std::mutex> lock(m_mutex);
-		m_images[url] = cairo_surface_wrapper(image);
-	}
-
-	cairo_surface_t* get_image(const std::string& url)
-	{
-		std::unique_lock<std::mutex> lock(m_mutex);
-		auto iter = m_images.find(url);
-		if(iter != m_images.end())
-		{
-			return iter->second.get();
-		}
-		return nullptr;
-	}
-
-	bool reserve(const std::string& url)
-	{
-		std::unique_lock<std::mutex> lock(m_mutex);
-		auto iter = m_images.find(url);
-		if (iter == m_images.end())
-		{
-			m_images[url] = cairo_surface_wrapper();
-			return true;
-		}
-		return false;
-	}
-
-	bool exists(const std::string& url)
-	{
-		std::unique_lock<std::mutex> lock(m_mutex);
-		auto iter = m_images.find(url);
-		return iter != m_images.end();
-	}
-};
-
-#endif //LITEHTML_CAIRO_IMAGES_CACHE_H
diff --git a/libs/litehtml/containers/cairo/container_cairo.cpp b/libs/litehtml/containers/cairo/container_cairo.cpp
deleted file mode 100644
index e97ba44f1b..0000000000
--- a/libs/litehtml/containers/cairo/container_cairo.cpp
+++ /dev/null
@@ -1,750 +0,0 @@
-#include "container_cairo.h"
-#include "cairo_borders.h"
-#include <cmath>
-
-#ifndef M_PI
-#       define M_PI    3.14159265358979323846
-#endif
-
-
-int container_cairo::pt_to_px(int pt ) const
-{
-	double dpi = get_screen_dpi();
-
-	return (int) ((double) pt * dpi / 72.0);
-}
-
-int container_cairo::get_default_font_size() const
-{
-	return pt_to_px(12);
-}
-
-void container_cairo::draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker& marker )
-{
-	if(!marker.image.empty())
-	{
-		/*litehtml::string url;
-		make_url(marker.image.c_str(), marker.baseurl, url);
-
-		lock_images_cache();
-		images_map::iterator img_i = m_images.find(url.c_str());
-		if(img_i != m_images.end())
-		{
-			if(img_i->second)
-			{
-				draw_txdib((cairo_t*) hdc, img_i->second, marker.pos.x, marker.pos.y, marker.pos.width, marker.pos.height);
-			}
-		}
-		unlock_images_cache();*/
-	} else
-	{
-		switch(marker.marker_type)
-		{
-		case litehtml::list_style_type_circle:
-			{
-				draw_ellipse((cairo_t*) hdc, marker.pos.x, marker.pos.y, marker.pos.width, marker.pos.height, marker.color, 1);
-			}
-			break;
-		case litehtml::list_style_type_disc:
-			{
-				fill_ellipse((cairo_t*) hdc, marker.pos.x, marker.pos.y, marker.pos.width, marker.pos.height, marker.color);
-			}
-			break;
-		case litehtml::list_style_type_square:
-			if(hdc)
-			{
-				auto* cr = (cairo_t*) hdc;
-				cairo_save(cr);
-
-				cairo_new_path(cr);
-				cairo_rectangle(cr, marker.pos.x, marker.pos.y, marker.pos.width, marker.pos.height);
-
-				set_color(cr, marker.color);
-				cairo_fill(cr);
-				cairo_restore(cr);
-			}
-			break;
-		default:
-			/*do nothing*/
-			break;
-		}
-	}
-}
-
-void container_cairo::get_image_size(const char* src, const char* baseurl, litehtml::size& sz )
-{
-	litehtml::string url;
-	make_url(src, baseurl, url);
-
-	auto img = get_image(url);
-	if(img)
-	{
-		sz.width = cairo_image_surface_get_width(img);
-		sz.height = cairo_image_surface_get_height(img);
-		cairo_surface_destroy(img);
-	} else
-	{
-		sz.width	= 0;
-		sz.height	= 0;
-	}
-}
-
-void container_cairo::clip_background_layer(cairo_t* cr, const litehtml::background_layer& layer)
-{
-	rounded_rectangle(cr, layer.border_box, layer.border_radius);
-	cairo_clip(cr);
-
-	cairo_rectangle(cr, layer.clip_box.x, layer.clip_box.y, layer.clip_box.width, layer.clip_box.height);
-	cairo_clip(cr);
-}
-
-void container_cairo::draw_image(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const std::string& url, const std::string& base_url)
-{
-	if(url.empty() || (!layer.clip_box.width && !layer.clip_box.height) )
-	{
-		return;
-	}
-
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	clip_background_layer(cr, layer);
-
-	std::string img_url;
-	make_url(url.c_str(), base_url.c_str(), img_url);
-
-	auto bgbmp = get_image(img_url);
-	if (bgbmp)
-	{
-		if (layer.origin_box.width != cairo_image_surface_get_width(bgbmp) ||
-				layer.origin_box.height != cairo_image_surface_get_height(bgbmp))
-		{
-			auto new_img = scale_surface(bgbmp, layer.origin_box.width, layer.origin_box.height);
-			cairo_surface_destroy(bgbmp);
-			bgbmp = new_img;
-		}
-
-		cairo_pattern_t *pattern = cairo_pattern_create_for_surface(bgbmp);
-		cairo_matrix_t flib_m;
-		cairo_matrix_init_identity(&flib_m);
-		cairo_matrix_translate(&flib_m, -layer.origin_box.x, -layer.origin_box.y);
-		cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
-		cairo_pattern_set_matrix(pattern, &flib_m);
-
-		switch (layer.repeat)
-		{
-			case litehtml::background_repeat_no_repeat:
-				draw_pixbuf(cr, bgbmp, layer.origin_box.x, layer.origin_box.y, cairo_image_surface_get_width(bgbmp),
-							cairo_image_surface_get_height(bgbmp));
-				break;
-
-			case litehtml::background_repeat_repeat_x:
-				cairo_set_source(cr, pattern);
-				cairo_rectangle(cr, layer.clip_box.left(), layer.origin_box.y, layer.clip_box.width,
-								cairo_image_surface_get_height(bgbmp));
-				cairo_fill(cr);
-				break;
-
-			case litehtml::background_repeat_repeat_y:
-				cairo_set_source(cr, pattern);
-				cairo_rectangle(cr, layer.origin_box.x, layer.clip_box.top(), cairo_image_surface_get_width(bgbmp),
-								layer.clip_box.height);
-				cairo_fill(cr);
-				break;
-
-			case litehtml::background_repeat_repeat:
-				cairo_set_source(cr, pattern);
-				cairo_rectangle(cr, layer.clip_box.left(), layer.clip_box.top(), layer.clip_box.width,
-								layer.clip_box.height);
-				cairo_fill(cr);
-				break;
-		}
-
-		cairo_pattern_destroy(pattern);
-		cairo_surface_destroy(bgbmp);
-	}
-	cairo_restore(cr);
-}
-
-void container_cairo::draw_solid_fill(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::web_color& color)
-{
-	if(color == litehtml::web_color::transparent)
-	{
-		return;
-	}
-
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	clip_background_layer(cr, layer);
-
-	set_color(cr, color);
-	cairo_paint(cr);
-
-	cairo_restore(cr);
-}
-
-/**
- * @brief Draw pattern using layer.repeat property.
- *
- * Pattern must be defined relatively to the (layer.origin_box.x, layer.origin_box.y) point.
- * Function calculates rectangles for repeat-x/repeat-y properties and transform pattern to the correct position.
- * Then call draw callback to draw single pattern.
- *
- * @param cr - cairo context
- * @param pattern - cairo pattern
- * @param layer - background layer
- * @param draw - pattern draw function
- */
-static void draw_pattern(cairo_t* cr, cairo_pattern_t* pattern,
-						 const litehtml::background_layer& layer,
-						 const std::function<void(cairo_t* cr, cairo_pattern_t* pattern, int x, int y, int width, int height)>& draw)
-{
-	int start_x = layer.origin_box.x;
-	int num_x = 1;
-	int start_y = layer.origin_box.y;
-	int num_y = 1;
-	if(layer.repeat == litehtml::background_repeat_repeat_x || layer.repeat == litehtml::background_repeat_repeat)
-	{
-		if(layer.origin_box.left() > layer.clip_box.left())
-		{
-			int num_left = (layer.origin_box.left() - layer.clip_box.left()) / layer.origin_box.width;
-			if(layer.origin_box.left() - num_left * layer.origin_box.width > layer.clip_box.left())
-			{
-				num_left++;
-			}
-			start_x = layer.origin_box.left() - num_left * layer.origin_box.width;
-			num_x += num_left;
-		}
-		if(layer.origin_box.right() < layer.clip_box.right())
-		{
-			int num_right = (layer.clip_box.right() - layer.origin_box.right()) / layer.origin_box.width;
-			if(layer.origin_box.left() + num_right * layer.origin_box.width < layer.clip_box.right())
-			{
-				num_right++;
-			}
-			num_x += num_right;
-		}
-	}
-	if(layer.repeat == litehtml::background_repeat_repeat_y || layer.repeat == litehtml::background_repeat_repeat)
-	{
-		if(layer.origin_box.top() > layer.clip_box.top())
-		{
-			int num_top = (layer.origin_box.top() - layer.clip_box.top()) / layer.origin_box.height;
-			if(layer.origin_box.top() - num_top * layer.origin_box.height > layer.clip_box.top())
-			{
-				num_top++;
-			}
-			start_y = layer.origin_box.top() - num_top * layer.origin_box.height;
-			num_y += num_top;
-		}
-		if(layer.origin_box.bottom() < layer.clip_box.bottom())
-		{
-			int num_bottom = (layer.clip_box.bottom() - layer.origin_box.bottom()) / layer.origin_box.height;
-			if(layer.origin_box.bottom() + num_bottom * layer.origin_box.height < layer.clip_box.bottom())
-			{
-				num_bottom++;
-			}
-			num_y += num_bottom;
-		}
-	}
-
-	for(int i_x = 0; i_x < num_x; i_x++)
-	{
-		for(int i_y= 0; i_y < num_y; i_y++)
-		{
-			cairo_matrix_t flib_m;
-			cairo_matrix_init_translate(&flib_m, -(start_x + i_x * layer.origin_box.width), -(start_y + i_y * layer.origin_box.height));
-			cairo_pattern_set_matrix(pattern, &flib_m);
-			draw(cr, pattern,
-				 start_x + i_x * layer.origin_box.width,
-				 start_y + i_y * layer.origin_box.height,
-				 layer.origin_box.width,
-				 layer.origin_box.height);
-		}
-	}
-}
-
-void container_cairo::draw_linear_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::background_layer::linear_gradient& gradient)
-{
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	clip_background_layer(cr, layer);
-
-	// Translate pattern to the (layer.origin_box.x, layer.origin_box.y) point
-	cairo_pattern_t* pattern = cairo_pattern_create_linear(gradient.start.x - (float) layer.origin_box.x,
-														   gradient.start.y - (float) layer.origin_box.y,
-														   gradient.end.x - (float) layer.origin_box.x,
-														   gradient.end.y - (float) layer.origin_box.y);
-
-	for(const auto& color_stop : gradient.color_points)
-	{
-		cairo_pattern_add_color_stop_rgba(pattern,
-										  color_stop.offset,
-										  color_stop.color.red / 255.0,
-										  color_stop.color.green / 255.0,
-										  color_stop.color.blue / 255.0,
-										  color_stop.color.alpha / 255.0);
-	}
-
-	draw_pattern(cr, pattern, layer, [](cairo_t* cr, cairo_pattern_t* pattern, int x, int y, int width, int height)
-		{
-			cairo_set_source(cr, pattern);
-			cairo_rectangle(cr, x, y, width, height);
-			cairo_fill(cr);
-		}
-	);
-
-	cairo_pattern_destroy(pattern);
-	cairo_restore(cr);
-}
-
-void container_cairo::make_url(const char* url, const char* /*basepath*/, litehtml::string& out)
-{
-	out = url;
-}
-
-void container_cairo::add_path_arc(cairo_t* cr, double x, double y, double rx, double ry, double a1, double a2, bool neg)
-{
-	if(rx > 0 && ry > 0)
-	{
-
-		cairo_save(cr);
-
-		cairo_translate(cr, x, y);
-		cairo_scale(cr, 1, ry / rx);
-		cairo_translate(cr, -x, -y);
-
-		if(neg)
-		{
-			cairo_arc_negative(cr, x, y, rx, a1, a2);
-		} else
-		{
-			cairo_arc(cr, x, y, rx, a1, a2);
-		}
-
-		cairo_restore(cr);
-	} else
-	{
-		cairo_move_to(cr, x, y);
-	}
-}
-
-void container_cairo::draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool /*root*/)
-{
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	cairo_new_path(cr);
-
-	int bdr_top		= 0;
-	int bdr_bottom	= 0;
-	int bdr_left	= 0;
-	int bdr_right	= 0;
-
-	if(borders.top.width != 0 && borders.top.style > litehtml::border_style_hidden)
-	{
-		bdr_top = (int) borders.top.width;
-	}
-	if(borders.bottom.width != 0 && borders.bottom.style > litehtml::border_style_hidden)
-	{
-		bdr_bottom = (int) borders.bottom.width;
-	}
-	if(borders.left.width != 0 && borders.left.style > litehtml::border_style_hidden)
-	{
-		bdr_left = (int) borders.left.width;
-	}
-	if(borders.right.width != 0 && borders.right.style > litehtml::border_style_hidden)
-	{
-		bdr_right = (int) borders.right.width;
-	}
-
-	// draw right border
-	if(bdr_right)
-	{
-		cairo_matrix_t save_matrix;
-		cairo_get_matrix(cr, &save_matrix);
-		cairo_translate(cr, draw_pos.left(), draw_pos.top());
-		cairo_rotate(cr, M_PI);
-		cairo_translate(cr, -draw_pos.left(), -draw_pos.top());
-
-		cairo::border border(cr, draw_pos.left() - draw_pos.width, draw_pos.top() - draw_pos.height, draw_pos.top());
-		border.real_side = cairo::border::right_side;
-		border.color = borders.right.color;
-		border.style = borders.right.style;
-		border.border_width = bdr_right;
-		border.top_border_width = bdr_bottom;
-		border.bottom_border_width = bdr_top;
-		border.radius_top_x = borders.radius.bottom_right_x;
-		border.radius_top_y = borders.radius.bottom_right_y;
-		border.radius_bottom_x = borders.radius.top_right_x;
-		border.radius_bottom_y = borders.radius.top_right_y;
-		border.draw_border();
-
-		cairo_set_matrix(cr, &save_matrix);
-	}
-
-	// draw bottom border
-	if(bdr_bottom)
-	{
-		cairo_matrix_t save_matrix;
-		cairo_get_matrix(cr, &save_matrix);
-		cairo_translate(cr, draw_pos.left(), draw_pos.top());
-		cairo_rotate(cr, - M_PI / 2.0);
-		cairo_translate(cr, -draw_pos.left(), -draw_pos.top());
-
-		cairo::border border(cr, draw_pos.left() - draw_pos.height, draw_pos.top(), draw_pos.top() + draw_pos.width);
-		border.real_side = cairo::border::bottom_side;
-		border.color = borders.bottom.color;
-		border.style = borders.bottom.style;
-		border.border_width = bdr_bottom;
-		border.top_border_width = bdr_left;
-		border.bottom_border_width = bdr_right;
-		border.radius_top_x = borders.radius.bottom_left_x;
-		border.radius_top_y = borders.radius.bottom_left_y;
-		border.radius_bottom_x = borders.radius.bottom_right_x;
-		border.radius_bottom_y = borders.radius.bottom_right_y;
-		border.draw_border();
-
-		cairo_set_matrix(cr, &save_matrix);
-	}
-
-	// draw top border
-	if(bdr_top)
-	{
-		cairo_matrix_t save_matrix;
-		cairo_get_matrix(cr, &save_matrix);
-		cairo_translate(cr, draw_pos.left(), draw_pos.top());
-		cairo_rotate(cr, M_PI / 2.0);
-		cairo_translate(cr, -draw_pos.left(), -draw_pos.top());
-
-		cairo::border border(cr, draw_pos.left(), draw_pos.top() - draw_pos.width, draw_pos.top());
-		border.real_side = cairo::border::top_side;
-		border.color = borders.top.color;
-		border.style = borders.top.style;
-		border.border_width = bdr_top;
-		border.top_border_width = bdr_right;
-		border.bottom_border_width = bdr_left;
-		border.radius_top_x = borders.radius.top_right_x;
-		border.radius_top_y = borders.radius.top_right_y;
-		border.radius_bottom_x = borders.radius.top_left_x;
-		border.radius_bottom_y = borders.radius.top_left_y;
-		border.draw_border();
-
-		cairo_set_matrix(cr, &save_matrix);
-	}
-
-	// draw left border
-	if(bdr_left)
-	{
-		cairo::border border(cr, draw_pos.left(), draw_pos.top(), draw_pos.bottom());
-		border.real_side = cairo::border::left_side;
-		border.color = borders.left.color;
-		border.style = borders.left.style;
-		border.border_width = bdr_left;
-		border.top_border_width = bdr_top;
-		border.bottom_border_width = bdr_bottom;
-		border.radius_top_x = borders.radius.top_left_x;
-		border.radius_top_y = borders.radius.top_left_y;
-		border.radius_bottom_x = borders.radius.bottom_left_x;
-		border.radius_bottom_y = borders.radius.bottom_left_y;
-		border.draw_border();
-	}
-	cairo_restore(cr);
-}
-
-void container_cairo::transform_text(litehtml::string& /*text*/, litehtml::text_transform /*tt*/)
-{
-
-}
-
-void container_cairo::set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius )
-{
-	m_clips.emplace_back(pos, bdr_radius);
-}
-
-void container_cairo::del_clip()
-{
-	if(!m_clips.empty())
-	{
-		m_clips.pop_back();
-	}
-}
-
-void container_cairo::apply_clip(cairo_t* cr )
-{
-	for(const auto& clip_box : m_clips)
-	{
-		rounded_rectangle(cr, clip_box.box, clip_box.radius);
-		cairo_clip(cr);
-	}
-}
-
-void container_cairo::draw_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color, int line_width )
-{
-	if(!cr || !width || !height) return;
-	cairo_save(cr);
-
-	apply_clip(cr);
-
-	cairo_new_path(cr);
-
-	cairo_translate (cr, x + width / 2.0, y + height / 2.0);
-	cairo_scale (cr, width / 2.0, height / 2.0);
-	cairo_arc (cr, 0, 0, 1, 0, 2 * M_PI);
-
-	set_color(cr, color);
-	cairo_set_line_width(cr, line_width);
-	cairo_stroke(cr);
-
-	cairo_restore(cr);
-}
-
-void container_cairo::fill_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color )
-{
-	if(!cr || !width || !height) return;
-	cairo_save(cr);
-
-	apply_clip(cr);
-
-	cairo_new_path(cr);
-
-	cairo_translate (cr, x + width / 2.0, y + height / 2.0);
-	cairo_scale (cr, width / 2.0, height / 2.0);
-	cairo_arc (cr, 0, 0, 1, 0, 2 * M_PI);
-
-	set_color(cr, color);
-	cairo_fill(cr);
-
-	cairo_restore(cr);
-}
-
-void container_cairo::clear_images()
-{
-/*	for(images_map::iterator i = m_images.begin(); i != m_images.end(); i++)
-	{
-		if(i->second)
-		{
-			delete i->second;
-		}
-	}
-	m_images.clear();
-*/
-}
-
-const char* container_cairo::get_default_font_name() const
-{
-	return "Times New Roman";
-}
-
-std::shared_ptr<litehtml::element>	container_cairo::create_element(const char */*tag_name*/,
-																	  const litehtml::string_map &/*attributes*/,
-																	  const std::shared_ptr<litehtml::document> &/*doc*/)
-{
-	return nullptr;
-}
-
-void container_cairo::rounded_rectangle(cairo_t* cr, const litehtml::position &pos, const litehtml::border_radiuses &radius )
-{
-	cairo_new_path(cr);
-	if(radius.top_left_x && radius.top_left_y)
-	{
-		add_path_arc(cr,
-			 pos.left() + radius.top_left_x,
-			 pos.top() + radius.top_left_y,
-			 radius.top_left_x,
-			 radius.top_left_y,
-			 M_PI,
-			 M_PI * 3.0 / 2.0, false);
-	} else
-	{
-		cairo_move_to(cr, pos.left(), pos.top());
-	}
-
-	cairo_line_to(cr, pos.right() - radius.top_right_x, pos.top());
-
-	if(radius.top_right_x && radius.top_right_y)
-	{
-		add_path_arc(cr,
-			 pos.right() - radius.top_right_x,
-			 pos.top() + radius.top_right_y,
-			 radius.top_right_x,
-			 radius.top_right_y,
-			 M_PI * 3.0 / 2.0,
-			 2.0 * M_PI, false);
-	}
-
-	cairo_line_to(cr, pos.right(), pos.bottom() - radius.bottom_right_x);
-
-	if(radius.bottom_right_x && radius.bottom_right_y)
-	{
-		add_path_arc(cr,
-			 pos.right() - radius.bottom_right_x,
-			 pos.bottom() - radius.bottom_right_y,
-			 radius.bottom_right_x,
-			 radius.bottom_right_y,
-			 0,
-			 M_PI / 2.0, false);
-	}
-
-	cairo_line_to(cr, pos.left() - radius.bottom_left_x, pos.bottom());
-
-	if(radius.bottom_left_x && radius.bottom_left_y)
-	{
-		add_path_arc(cr,
-			 pos.left() + radius.bottom_left_x,
-			 pos.bottom() - radius.bottom_left_y,
-			 radius.bottom_left_x,
-			 radius.bottom_left_y,
-			 M_PI / 2.0,
-			 M_PI, false);
-	}
-}
-
-cairo_surface_t* container_cairo::scale_surface(cairo_surface_t* surface, int width, int height)
-{
-	int s_width = cairo_image_surface_get_width(surface);
-	int s_height = cairo_image_surface_get_height(surface);
-	cairo_surface_t *result = cairo_surface_create_similar(surface, cairo_surface_get_content(surface), width, height);
-	cairo_t *cr = cairo_create(result);
-	cairo_scale(cr, (double) width / (double) s_width, (double) height / (double) s_height);
-	cairo_set_source_surface(cr, surface, 0, 0);
-	cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
-	cairo_paint(cr);
-	cairo_destroy(cr);
-	return result;
-}
-
-void container_cairo::draw_pixbuf(cairo_t* cr, cairo_surface_t* bmp, int x, int y, int cx, int cy)
-{
-	cairo_save(cr);
-
-	{
-		cairo_matrix_t flip_m;
-		cairo_matrix_init(&flip_m, 1, 0, 0, -1, 0, 0);
-
-		if(cx != cairo_image_surface_get_width(bmp) || cy != cairo_image_surface_get_height(bmp))
-		{
-			auto bmp_scaled = scale_surface(bmp, cx, cy);
-			cairo_set_source_surface(cr, bmp_scaled, x, y);
-			cairo_paint(cr);
-			cairo_surface_destroy(bmp_scaled);
-		} else
-		{
-			cairo_set_source_surface(cr, bmp, x, y);
-			cairo_paint(cr);
-		}
-	}
-
-	cairo_restore(cr);
-}
-
-void container_cairo::get_media_features(litehtml::media_features& media) const
-{
-	litehtml::position client;
-    get_client_rect(client);
-	media.type			= litehtml::media_type_screen;
-	media.width			= client.width;
-	media.height		= client.height;
-	media.device_width	= get_screen_width();
-	media.device_height	= get_screen_height();
-	media.color			= 8;
-	media.monochrome	= 0;
-	media.color_index	= 256;
-	media.resolution	= 96;
-}
-
-void container_cairo::get_language(litehtml::string& language, litehtml::string& culture) const
-{
-	language = "en";
-	culture = "";
-}
-
-void container_cairo::link(const std::shared_ptr<litehtml::document> &/*ptr*/, const litehtml::element::ptr& /*el*/)
-{
-
-}
-
-void container_cairo::draw_radial_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer &layer,
-										   const litehtml::background_layer::radial_gradient &gradient)
-{
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	clip_background_layer(cr, layer);
-
-	// Translate pattern to the (layer.origin_box.x, layer.origin_box.y) point
-	litehtml::pointF position = gradient.position;
-	position.x -= (float) layer.origin_box.x;
-	position.y -= (float) layer.origin_box.y;
-
-	cairo_pattern_t* pattern = cairo_pattern_create_radial(position.x,
-														   position.y,
-														   0,
-														   position.x,
-														   position.y,
-														   gradient.radius.x);
-
-	for(const auto& color_stop : gradient.color_points)
-	{
-		cairo_pattern_add_color_stop_rgba(pattern,
-										  color_stop.offset,
-										  color_stop.color.red / 255.0,
-										  color_stop.color.green / 255.0,
-										  color_stop.color.blue / 255.0,
-										  color_stop.color.alpha / 255.0);
-	}
-
-	draw_pattern(cr, pattern, layer, [&gradient, &position](cairo_t* cr, cairo_pattern_t* pattern, int x, int y, int w, int h)
-		{
-			cairo_matrix_t save_matrix;
-			cairo_get_matrix(cr, &save_matrix);
-
-			auto top = (float) y;
-			auto height = (float) h;
-			if(gradient.radius.x != gradient.radius.y)
-			{
-				litehtml::pointF pos = position;
-				pos.x += (float) x;
-				pos.y += (float) y;
-				// Scale height and top of the origin box
-				float aspect_ratio = gradient.radius.x / gradient.radius.y;
-				height *= aspect_ratio;
-				auto center_y = (pos.y - (float ) y) * aspect_ratio;
-				top = pos.y - center_y;
-
-				cairo_translate(cr, pos.x, pos.y);
-				cairo_scale(cr, 1, gradient.radius.y / gradient.radius.x);
-				cairo_translate(cr, -pos.x, -pos.y);
-			}
-
-			cairo_set_source(cr, pattern);
-			cairo_rectangle(cr, x, top, w, height);
-			cairo_fill(cr);
-
-			cairo_set_matrix(cr, &save_matrix);
-		}
-	);
-
-	cairo_pattern_destroy(pattern);
-	cairo_restore(cr);
-}
-
-void container_cairo::draw_conic_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer &layer,
-										  const litehtml::background_layer::conic_gradient &/*gradient*/)
-{
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-	apply_clip(cr);
-
-	clip_background_layer(cr, layer);
-
-
-	cairo_restore(cr);
-}
diff --git a/libs/litehtml/containers/cairo/container_cairo.h b/libs/litehtml/containers/cairo/container_cairo.h
deleted file mode 100644
index 53aeb89d3c..0000000000
--- a/libs/litehtml/containers/cairo/container_cairo.h
+++ /dev/null
@@ -1,93 +0,0 @@
-#ifndef LH_CONTAINER_LINUX_H
-#define LH_CONTAINER_LINUX_H
-
-#include "../../include/litehtml.h"
-#include <cairo.h>
-
-struct cairo_clip_box
-{
-	typedef std::vector<cairo_clip_box> vector;
-	litehtml::position	box;
-	litehtml::border_radiuses radius;
-
-	cairo_clip_box(const litehtml::position& vBox, const litehtml::border_radiuses& vRad)
-	{
-		box = vBox;
-		radius = vRad;
-	}
-
-	cairo_clip_box(const cairo_clip_box& val)
-	{
-		box = val.box;
-		radius = val.radius;
-	}
-	cairo_clip_box& operator=(const cairo_clip_box& val)
-	{
-		box = val.box;
-		radius = val.radius;
-		return *this;
-	}
-};
-
-class container_cairo : public litehtml::document_container
-{
-protected:
-    cairo_clip_box::vector		m_clips;
-public:
-	container_cairo() = default;
-	virtual ~container_cairo() = default;
-
-	int pt_to_px(int pt) const override;
-	int get_default_font_size() const override;
-	const char*	get_default_font_name() const override;
-	void get_image_size(const char* src, const char* baseurl, litehtml::size& sz) override;
-	void draw_image(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const std::string& url, const std::string& base_url) override;
-	void draw_solid_fill(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::web_color& color) override;
-	void draw_linear_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::background_layer::linear_gradient& gradient) override;
-	void draw_radial_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::background_layer::radial_gradient& gradient) override;
-	void draw_conic_gradient(litehtml::uint_ptr hdc, const litehtml::background_layer& layer, const litehtml::background_layer::conic_gradient& gradient) override;
-	void draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root) override;
-	void draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker& marker) override;
-	std::shared_ptr<litehtml::element>	create_element(const char *tag_name,
-														 const litehtml::string_map &attributes,
-														 const std::shared_ptr<litehtml::document> &doc) override;
-	void get_media_features(litehtml::media_features& media) const override;
-	void get_language(litehtml::string& language, litehtml::string & culture) const override;
-	void link(const std::shared_ptr<litehtml::document> &ptr, const litehtml::element::ptr& el) override;
-
-
-	void transform_text(litehtml::string& text, litehtml::text_transform tt) override;
-	void set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius) override;
-	void del_clip() override;
-
-	virtual void make_url( const char* url, const char* basepath, litehtml::string& out );
-	virtual cairo_surface_t* get_image(const std::string& url) = 0;
-	virtual double get_screen_dpi() const = 0;
-	virtual int get_screen_width() const = 0;
-	virtual int get_screen_height() const = 0;
-
-	void clear_images();
-
-protected:
-	virtual void draw_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color, int line_width);
-	virtual void fill_ellipse(cairo_t* cr, int x, int y, int width, int height, const litehtml::web_color& color);
-	virtual void rounded_rectangle( cairo_t* cr, const litehtml::position &pos, const litehtml::border_radiuses &radius );
-
-	void clip_background_layer(cairo_t* cr, const litehtml::background_layer& layer);
-	void apply_clip(cairo_t* cr);
-	static void set_color(cairo_t* cr, const litehtml::web_color& color)
-	{
-		cairo_set_source_rgba(cr,
-							  color.red / 255.0,
-							  color.green / 255.0,
-							  color.blue / 255.0,
-							  color.alpha / 255.0);
-	}
-private:
-
-	static void add_path_arc(cairo_t* cr, double x, double y, double rx, double ry, double a1, double a2, bool neg);
-    static void draw_pixbuf(cairo_t* cr, cairo_surface_t* bmp, int x, int y, int cx, int cy);
-	static cairo_surface_t* scale_surface(cairo_surface_t* surface, int width, int height);
-};
-
-#endif
diff --git a/libs/litehtml/containers/cairo/container_cairo_pango.cpp b/libs/litehtml/containers/cairo/container_cairo_pango.cpp
deleted file mode 100644
index e218d7fd45..0000000000
--- a/libs/litehtml/containers/cairo/container_cairo_pango.cpp
+++ /dev/null
@@ -1,180 +0,0 @@
-#include "container_cairo_pango.h"
-
-container_cairo_pango::container_cairo_pango()
-{
-	m_temp_surface	= cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 2, 2);
-	m_temp_cr		= cairo_create(m_temp_surface);
-}
-
-container_cairo_pango::~container_cairo_pango()
-{
-	clear_images();
-	cairo_surface_destroy(m_temp_surface);
-	cairo_destroy(m_temp_cr);
-}
-
-litehtml::uint_ptr container_cairo_pango::create_font(const char *faceName, int size, int weight, litehtml::font_style italic,
-													  unsigned int decoration, litehtml::font_metrics *fm)
-{
-	PangoFontDescription *desc = pango_font_description_from_string (faceName);
-	pango_font_description_set_absolute_size(desc, size * PANGO_SCALE);
-	if(italic == litehtml::font_style_italic)
-	{
-		pango_font_description_set_style(desc, PANGO_STYLE_ITALIC);
-	} else
-	{
-		pango_font_description_set_style(desc, PANGO_STYLE_NORMAL);
-	}
-	PangoWeight fnt_weight;
-	if(weight >= 0 && weight < 150)			fnt_weight = PANGO_WEIGHT_THIN;
-	else if(weight >= 150 && weight < 250)	fnt_weight = PANGO_WEIGHT_ULTRALIGHT;
-	else if(weight >= 250 && weight < 350)	fnt_weight = PANGO_WEIGHT_LIGHT;
-	else if(weight >= 350 && weight < 450)	fnt_weight = PANGO_WEIGHT_NORMAL;
-	else if(weight >= 450 && weight < 550)	fnt_weight = PANGO_WEIGHT_MEDIUM;
-	else if(weight >= 550 && weight < 650)	fnt_weight = PANGO_WEIGHT_SEMIBOLD;
-	else if(weight >= 650 && weight < 750)	fnt_weight = PANGO_WEIGHT_BOLD;
-	else if(weight >= 750 && weight < 850)	fnt_weight = PANGO_WEIGHT_ULTRABOLD;
-	else fnt_weight = PANGO_WEIGHT_HEAVY;
-
-	pango_font_description_set_weight(desc, fnt_weight);
-
-	cairo_font* ret = nullptr;
-
-	if(fm)
-	{
-		cairo_save(m_temp_cr);
-		PangoLayout *layout = pango_cairo_create_layout(m_temp_cr);
-		PangoContext *context = pango_layout_get_context(layout);
-		PangoLanguage *language = pango_language_get_default();
-		pango_layout_set_font_description(layout, desc);
-		PangoFontMetrics *metrics = pango_context_get_metrics(context, desc, language);
-
-		fm->ascent = PANGO_PIXELS((double)pango_font_metrics_get_ascent(metrics));
-		fm->descent = PANGO_PIXELS((double)pango_font_metrics_get_descent(metrics));
-		fm->height = fm->ascent + fm->descent;
-		fm->x_height = fm->height;
-
-		pango_layout_set_text(layout, "x", 1);
-
-		int x_width, x_height;
-		pango_layout_get_pixel_size(layout, &x_width, &x_height);
-
-		fm->x_height	= x_height;
-
-		cairo_restore(m_temp_cr);
-
-		g_object_unref(layout);
-		pango_font_metrics_unref(metrics);
-
-		ret = new cairo_font;
-		ret->font		= desc;
-		ret->size		= size;
-		ret->strikeout 	= (decoration & litehtml::font_decoration_linethrough) != 0;
-		ret->underline	= (decoration & litehtml::font_decoration_underline) != 0;
-		ret->ascent     = fm->ascent;
-		ret->descent    = fm->descent;
-
-		ret->underline_thickness = pango_font_metrics_get_underline_thickness(metrics);
-		ret->underline_position = -pango_font_metrics_get_underline_position(metrics);
-		pango_quantize_line_geometry(&ret->underline_thickness, &ret->underline_position);
-		ret->underline_thickness = PANGO_PIXELS(ret->underline_thickness);
-		ret->underline_position = -1;//PANGO_PIXELS(ret->underline_position);
-
-		ret->strikethrough_thickness = pango_font_metrics_get_strikethrough_thickness(metrics);
-		ret->strikethrough_position = pango_font_metrics_get_strikethrough_position(metrics);
-		pango_quantize_line_geometry(&ret->strikethrough_thickness, &ret->strikethrough_position);
-		ret->strikethrough_thickness = PANGO_PIXELS(ret->strikethrough_thickness);
-		ret->strikethrough_position = PANGO_PIXELS(ret->strikethrough_position);
-	}
-
-	return (litehtml::uint_ptr) ret;
-}
-
-void container_cairo_pango::delete_font(litehtml::uint_ptr hFont)
-{
-	auto* fnt = (cairo_font*) hFont;
-	if(fnt)
-	{
-		pango_font_description_free(fnt->font);
-		delete fnt;
-	}
-}
-
-int container_cairo_pango::text_width(const char *text, litehtml::uint_ptr hFont)
-{
-	auto* fnt = (cairo_font*) hFont;
-
-	cairo_save(m_temp_cr);
-
-	PangoLayout *layout = pango_cairo_create_layout(m_temp_cr);
-	pango_layout_set_font_description(layout, fnt->font);
-
-	pango_layout_set_text(layout, text, -1);
-	pango_cairo_update_layout (m_temp_cr, layout);
-
-	int x_width, x_height;
-	pango_layout_get_pixel_size(layout, &x_width, &x_height);
-
-	cairo_restore(m_temp_cr);
-
-	g_object_unref(layout);
-
-	return (int) x_width;
-}
-
-void container_cairo_pango::draw_text(litehtml::uint_ptr hdc, const char *text, litehtml::uint_ptr hFont,
-									  litehtml::web_color color, const litehtml::position &pos)
-{
-	auto* fnt = (cairo_font*) hFont;
-	auto* cr = (cairo_t*) hdc;
-	cairo_save(cr);
-
-	apply_clip(cr);
-
-	set_color(cr, color);
-
-	PangoLayout *layout = pango_cairo_create_layout(cr);
-	pango_layout_set_font_description (layout, fnt->font);
-	pango_layout_set_text (layout, text, -1);
-
-	int baseline = PANGO_PIXELS(pango_layout_get_baseline(layout));
-
-	PangoRectangle ink_rect, logical_rect;
-	pango_layout_get_pixel_extents(layout, &ink_rect, &logical_rect);
-
-	int text_baseline = pos.height - fnt->descent;
-
-	int x = pos.left() + logical_rect.x;
-	int y = pos.top() + logical_rect.y + text_baseline - baseline;
-
-	cairo_move_to(cr, x, y);
-	pango_cairo_update_layout (cr, layout);
-	pango_cairo_show_layout (cr, layout);
-
-	int tw = 0;
-
-	if(fnt->underline || fnt->strikeout)
-	{
-		tw = text_width(text, hFont);
-	}
-
-	if(fnt->underline)
-	{
-		cairo_set_line_width(cr, fnt->underline_thickness);
-		cairo_move_to(cr, x, pos.top() + text_baseline - fnt->underline_position + 0.5);
-		cairo_line_to(cr, x + tw, pos.top() + text_baseline - fnt->underline_position + 0.5);
-		cairo_stroke(cr);
-	}
-	if(fnt->strikeout)
-	{
-		cairo_set_line_width(cr, fnt->strikethrough_thickness);
-		cairo_move_to(cr, x, pos.top() + text_baseline - fnt->strikethrough_position - 0.5);
-		cairo_line_to(cr, x + tw, pos.top() + text_baseline - fnt->strikethrough_position - 0.5);
-		cairo_stroke(cr);
-	}
-
-	cairo_restore(cr);
-
-	g_object_unref(layout);
-}
-
diff --git a/libs/litehtml/containers/cairo/container_cairo_pango.h b/libs/litehtml/containers/cairo/container_cairo_pango.h
deleted file mode 100644
index 455bcf5cfb..0000000000
--- a/libs/litehtml/containers/cairo/container_cairo_pango.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef LITEBROWSER_CONTAINER_CAIRO_PANGO_H
-#define LITEBROWSER_CONTAINER_CAIRO_PANGO_H
-
-#include <litehtml.h>
-#include "container_cairo.h"
-#include <cairo.h>
-#include <pango/pangocairo.h>
-#include <pango/pango-font.h>
-
-struct cairo_font
-{
-	PangoFontDescription* font;
-	int size;
-	bool underline;
-	bool strikeout;
-	int ascent;
-	int descent;
-	int underline_thickness;
-	int underline_position;
-	int strikethrough_thickness;
-	int strikethrough_position;
-};
-
-class container_cairo_pango : public container_cairo
-{
-	cairo_surface_t*			m_temp_surface;
-	cairo_t*					m_temp_cr;
-public:
-	container_cairo_pango();
-	~container_cairo_pango() override;
-	litehtml::uint_ptr create_font(const char* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm) override;
-	void delete_font(litehtml::uint_ptr hFont) override;
-	int text_width(const char* text, litehtml::uint_ptr hFont) override;
-	void draw_text(litehtml::uint_ptr hdc, const char* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos) override;
-};
-
-#endif //LITEBROWSER_CONTAINER_CAIRO_PANGO_H
diff --git a/libs/litehtml/containers/haiku/container_haiku.cpp b/libs/litehtml/containers/haiku/container_haiku.cpp
deleted file mode 100644
index 7c49f22b6f..0000000000
--- a/libs/litehtml/containers/haiku/container_haiku.cpp
+++ /dev/null
@@ -1,568 +0,0 @@
-/*
- * Copyright 2019-2020 Haiku Inc.
- * All rights reserved. Distributed under the terms of the BSD 3-clause license.
- * Constributors
- * 2019-2020	Adam Fowler <adamfowleruk@gmail.com>
- */
-#include "container_haiku.h"
-
-#include <string>
-#include <iostream>
-#include <fstream>
-#include <streambuf>
-#include <map>
-
-#include <Bitmap.h>
-#include <String.h>
-#include <Entry.h>
-#include <Path.h>
-#include <TranslationUtils.h>
-
-LiteHtmlView::LiteHtmlView(BRect frame, const char *name)
-	: BView(frame, name, B_FOLLOW_ALL, B_WILL_DRAW),
-	fContext(NULL),
-	m_html(NULL),
-	m_images(),
-	m_base_url(),
-	m_url()
-{
-	
-	BRect bounds(Bounds());
-	BPoint topLeft = bounds.LeftTop();
-	std::cout << "Initial bounds: topLeft x: " << +topLeft.x << ", y: " 
-		<< +topLeft.y << ", width: " << +bounds.Width() << ", height: " 
-		<< +bounds.Height() << std::endl;
-	
-	SetDrawingMode(B_OP_OVER);
-	SetFont(be_plain_font);
-	
-	//FillRect(bounds,B_SOLID_LOW);
-	
-	//SetLowColor(B_DOCUMENT_PANEL_COLOR);
-	//FillRect(rect);
-}
-
-LiteHtmlView::~LiteHtmlView()
-{
-}
-
-void
-LiteHtmlView::SetContext(litehtml::context* ctx)
-{
-	fContext = ctx;
-}
-
-void
-LiteHtmlView::RenderFile(const char* localFilePath)
-{
-	std::cout << "RenderFile" << std::endl;
-	//BUrlRequest req;
-	// assume a local file for now, that is HTML
-	std::ifstream t(localFilePath);
-	std::string html((std::istreambuf_iterator<char>(t)),
-					 std::istreambuf_iterator<char>());
-	
-	//std::cout << "HTML output:-" << std::endl << html << std::endl;
-	
-	// Get parent folder for the base url
-	std::cout << "Loaded from file: " << localFilePath << std::endl;
-	BPath htmlPath(localFilePath);
-	BPath dirPath;
-	htmlPath.GetParent(&dirPath);
-	std::cout << "parent path: " << dirPath.Path() << std::endl;
-	set_base_url(dirPath.Path());
-	//std::cout << "    base url now:" << m_base_url << std::endl;
-	
-	RenderHTML(html);
-}
-
-void
-LiteHtmlView::RenderHTML(const std::string& htmlText)
-{
-	std::cout << "RenderHTML" << std::endl;
-	
-	// now use this string
-	m_html = litehtml::document::createFromString(
-		htmlText.c_str(), this, fContext);
-	if (m_html) 
-	{
-		std::cout << "Successfully read html" << std::endl;
-		// success
-		// post-parse render operations, if required.
-		Invalidate();
-	} else {
-		std::cout << "Failed to read html" << std::endl;
-	}
-	// always fire the rendering complete message
-	std::cout << "Sending html rendered message: " << M_HTML_RENDERED << std::endl;
-}
-
-void
-LiteHtmlView::Draw(BRect b)
-{
-	std::cout << "DRAW CALLED" << std::endl;
-	
-	BRect bounds(Bounds());
-	FillRect(bounds,B_SOLID_LOW);
-	
-	// b only part of the window, but we need to draw the whole lot
-	
-	if (NULL != m_html) {
-		BPoint leftTop = bounds.LeftTop();
-		litehtml::position clip(leftTop.x,leftTop.y,
-			bounds.Width(),bounds.Height());
-		m_html->render(bounds.Width());
-		m_html->draw((litehtml::uint_ptr) this,0,0,&clip);
-	}
-	SendNotices(M_HTML_RENDERED,new BMessage(M_HTML_RENDERED));
-}
-
-void
-LiteHtmlView::GetPreferredSize(float* width,float* height)
-{
-	if (NULL == m_html)
-	{
-		BRect bounds(Bounds());
-		*width = bounds.Width(); 
-		*height = bounds.Height();
-	} else {
-		*width = m_html->width();
-		*height = m_html->height();
-	}
-}
-
-litehtml::uint_ptr 
-LiteHtmlView::create_font( const litehtml::tchar_t* faceName, int size, 
-	int weight, litehtml::font_style italic, unsigned int decoration, 
-	litehtml::font_metrics* fm )
-{
-	//std::cout << "create_font" << std::endl;
-	litehtml::string_vector fonts;
-	litehtml::split_string(faceName, fonts, ",");
-	litehtml::trim(fonts[0]);
-
-	uint16 face = B_REGULAR_FACE; // default
-	if (italic == litehtml::font_style_italic)
-	{
-		face |= B_ITALIC_FACE;
-	}
-	if (decoration & litehtml::font_decoration_underline)
-	{
-		face |= B_UNDERSCORE_FACE;
-	}
-	if (decoration & litehtml::font_decoration_linethrough)
-	{
-		face |= B_STRIKEOUT_FACE;
-	}
-	// Note: LIGHT, HEAVY, CONDENSED not supported in BeOS R5
-#ifdef __HAIKU__
-	if(weight >= 0 && weight < 150)			face |= B_LIGHT_FACE;
-	else if(weight >= 150 && weight < 250)	face |= B_LIGHT_FACE;
-	else if(weight >= 250 && weight < 350)	face |= B_LIGHT_FACE;
-	//else if(weight >= 350 && weight < 450)	face |= B_REGULAR_FACE;
-	//else if(weight >= 450 && weight < 550)	face |= B_REGULAR_FACE;
-	else if(weight >= 550 && weight < 650)	face |= B_CONDENSED_FACE;
-#else
-	else if(weight >= 550 && weight < 650)	face |= B_BOLD_FACE;
-#endif
-	else if(weight >= 650 && weight < 750)	face |= B_BOLD_FACE;
-#ifndef __HAIKU__
-	else if(weight >= 750 && weight < 850)	face |= B_BOLD_FACE;
-	else if(weight >= 950)					face |= B_BOLD_FACE;
-#else
-	else if(weight >= 750 && weight < 850)	face |= B_HEAVY_FACE;
-	else if(weight >= 950)					face |= B_HEAVY_FACE;
-#endif
-
-	BFont* tempFont = new BFont();
-	bool found = false;
-	for(litehtml::string_vector::iterator i = fonts.begin(); 
-		i != fonts.end(); i++)
-	{
-		if (B_OK == tempFont->SetFamilyAndFace(i->c_str(),face))
-		{
-			found = true;
-			break;
-		}
-	}
-	
-	if (!found)
-	{
-		// default to the Be plain font
-		tempFont = new BFont(be_plain_font);
-		if (weight >= 550) 
-		{
-			tempFont = new BFont(be_bold_font);
-		}
-		tempFont->SetFace(face); // chooses closest
-	}
-	
-	tempFont->SetSize(size);
-	
-	font_height hgt;
-	tempFont->GetHeight(&hgt);
-	fm->ascent = hgt.ascent;
-	fm->descent = hgt.descent;
-	fm->height = (int) (hgt.ascent + hgt.descent);
-	fm->x_height = (int) hgt.leading;
-	
-	return (litehtml::uint_ptr) tempFont;
-}
-
-void 
-LiteHtmlView::delete_font( litehtml::uint_ptr hFont )
-{
-	std::cout << "delete_font" << std::endl;
-}
-
-int 
-LiteHtmlView::text_width( const litehtml::tchar_t* text, 
-	litehtml::uint_ptr hFont )
-{
-	//std::cout << "text_width" << std::endl;
-	BFont* fnt = (BFont*)hFont;
-	int width = fnt->StringWidth(text);
-	//std::cout << "    Width: " << +width << std::endl;
-	return width;
-}
-
-void 
-LiteHtmlView::draw_text( litehtml::uint_ptr hdc, const litehtml::tchar_t* text,
-	litehtml::uint_ptr hFont, litehtml::web_color color, 
-	const litehtml::position& pos )
-{
-	//std::cout << "draw_text" << std::endl;
-	if (!text) return;
-	if (0 == strlen(text)) return;
-	BFont* fnt = (BFont*)hFont;
-	
-	//std::cout << "    left: " << +pos.left() << ", top: " << +pos.top() << std::endl;
-	//std::cout << "    RGBA: " << +color.red << "," << +color.green << "," << +color.blue << "," << +color.alpha << std::endl;
-	//std::cout << "    Font size: " << +fnt->Size() << std::endl;
-	//std::cout << "    Text: " << text << std::endl;
-	BRect bounds(Bounds());
-
-	//FillRect(bounds,B_SOLID_LOW);
-	
-	BPoint leftTop = bounds.LeftTop();
-	//std::cout << "    Bounds left: " << +leftTop.x << ", top: " << +leftTop.y << ", Width: " << +bounds.Width() << ", Height: " << +bounds.Height() << std::endl;
-	
-	font_height fh;
-	fnt->GetHeight(&fh);
-	int baseline = fh.ascent + fh.descent;// + 10;
-	int leftbase = 0; //10;
-	MovePenTo(pos.left() + leftbase,pos.top() + baseline);//leftTop.x,leftTop.y);
-	SetFont(fnt);
-	//SetFont(be_plain_font);
-	rgb_color clr = ui_color(B_DOCUMENT_TEXT_COLOR);
-	/*
-	rgb_color clr;
-	clr.blue = 40;
-	clr.red = 40;
-	clr.green = 40;
-	*/
-		
-	clr.red = color.red;
-	clr.green = color.green;
-	clr.blue = color.blue;
-	clr.alpha = color.alpha;
-	
-	//std::cout << "    Final RGBA: " << +clr.red << "," << +clr.green << "," << +clr.blue << "," << +clr.alpha << std::endl;
-	SetHighColor(clr);
-	SetLowColor(ui_color(B_DOCUMENT_BACKGROUND_COLOR));
-	BString mystr("");
-	//mystr << "text: ";
-	mystr << text;
-	DrawString(mystr);
-}
-
-int 
-LiteHtmlView::pt_to_px( int pt )
-{
-	std::cout << "pt_to_px" << std::endl;
-	return (int) ((double) pt * 1.3333333333);
-}
-
-int 
-LiteHtmlView::get_default_font_size() const
-{
-	//std::cout << "get_default_font_size" << std::endl;
-	return 12;
-}
-
-const litehtml::tchar_t* 
-LiteHtmlView::get_default_font_name() const
-{
-	//std::cout << "get_default_font_name" << std::endl;
-	font_family fam;
-	font_style style;
-	be_plain_font->GetFamilyAndStyle(&fam,&style);
-	char* cp = strdup(fam);
-	return (litehtml::tchar_t*)cp;
-}
-
-void 
-LiteHtmlView::draw_list_marker( litehtml::uint_ptr hdc, 
-	const litehtml::list_marker& marker )
-{
-	std::cout << "draw_list_marker" << std::endl;
-	if (!marker.image.empty())
-	{
-		std::cout << "    image marker" << std::endl;
-	}
-}
-
-void 
-LiteHtmlView::load_image( const litehtml::tchar_t* src, 
-	const litehtml::tchar_t* baseurl, bool redraw_on_ready )
-{
-	std::cout << "load_image" << std::endl;
-	
-	std::string url;
-	make_url(src, baseurl, url);
-	if(m_images.find(url.c_str()) == m_images.end())
-	{
-		BEntry entry(url.c_str(), true);
-		if (entry.Exists()) {
-			std::cout << "    Loading bitmap from file" << std::endl;
-			BBitmap* img = BTranslationUtils::GetBitmap(url.c_str());
-			m_images[url] = img;	
-		}
-	}
-}
-
-void
-LiteHtmlView::make_url(const litehtml::tchar_t* url, 
-	const litehtml::tchar_t* basepath, litehtml::tstring& out)
-{
-	std::cout << "make_url" << std::endl;
-	std::cout << "    url: " << url << std::endl;
-	if(!basepath || (basepath && !basepath[0]))
-	{
-		if(!m_base_url.empty())
-		{
-			//out = urljoin(m_base_url, std::string(url));
-			std::string ns(m_base_url);
-			ns += "/";
-			ns += url;
-			out = ns;
-		} else
-		{
-			out = url;
-		}
-	} else
-	{
-		std::cout << "    basepath: " << basepath << std::endl;
-		//out = urljoin(std::string(basepath), std::string(url));
-		std::string ns(basepath);
-		ns += "/";
-		ns += url;
-		out = ns;
-	}
-	std::cout << "    Output url: " << out << std::endl;
-}
-
-void
-LiteHtmlView::set_base_url(const litehtml::tchar_t* base_url)
-{
-	std::cout << "set_base_url" << std::endl;
-/*
-	if(base_url)
-	{
-		m_base_url = urljoin(m_url, std::string(base_url));
-	} else
-	{
-	*/
-		m_base_url = base_url;
-	std::cout << "    base url set to: " << m_base_url << std::endl;
-	//}
-}
-
-
-void 
-LiteHtmlView::get_image_size( const litehtml::tchar_t* src, 
-	const litehtml::tchar_t* baseurl, litehtml::size& sz )
-{
-	std::cout << "get_image_size" << std::endl;
-	std::string url;
-	make_url(src,NULL,url);
-	const auto& miter(m_images.find(url.c_str()));
-	if (m_images.end() != miter)
-	{
-		BBitmap* img = (BBitmap*)miter->second;
-		BRect size = img->Bounds();
-		sz.width = size.Width();
-		sz.height = size.Height();
-		std::cout << "    width: " << +sz.width << ", height: " << +sz.height << std::endl;
-	}
-}
-
-void
-LiteHtmlView::draw_image( litehtml::uint_ptr hdc, const litehtml::tchar_t* src,
-	const litehtml::tchar_t* baseurl, const litehtml::position& pos )
-{
-	std::string url;
-	make_url(src, baseurl, url);
-	const auto& img = m_images.find(url.c_str());
-	if(img != m_images.end())
-	{
-		if(img->second)
-		{
-			DrawBitmap(img->second,BPoint(pos.x,pos.y)); // TODO support scaling
-			//draw_txdib(cr, img->second.get(), pos.x, pos.y, pos.width, pos.height);
-		}
-	}
-}
-
-void 
-LiteHtmlView::draw_background( litehtml::uint_ptr hdc, 
-	const litehtml::background_paint& bg )
-{
-	std::cout << "draw_background" << std::endl;
-	if (0 < bg.image.length())
-	{
-		std::cout << "    background includes an image!" << std::endl;
-		draw_image(hdc,bg.image.c_str(),m_base_url.c_str(),litehtml::position(bg.position_x,bg.position_y,bg.image_size.width,bg.image_size.height));
-	}
-}
-
-void 
-LiteHtmlView::draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root)
-{
-	std::cout << "draw_borders" << std::endl;
-	int bdr_top		= 0;
-	int bdr_bottom	= 0;
-	int bdr_left	= 0;
-	int bdr_right	= 0;
-	
-	//std::cout << "   uint ptr: " << +hdc << std::endl;
-	//std::cout << "   this ptr: " << +this << std::endl;
-
-	if(borders.top.width != 0 && borders.top.style > litehtml::border_style_hidden)
-	{
-		bdr_top = (int) borders.top.width;
-		std::cout << "	Border top: " << bdr_right << std::endl;
-	}
-	if(borders.bottom.width != 0 && borders.bottom.style > litehtml::border_style_hidden)
-	{
-		bdr_bottom = (int) borders.bottom.width;
-		std::cout << "	Border bottom: " << bdr_right << std::endl;
-	}
-	if(borders.left.width != 0 && borders.left.style > litehtml::border_style_hidden)
-	{
-		bdr_left = (int) borders.left.width;
-		std::cout << "	Border left: " << bdr_right << std::endl;
-	}
-	if(borders.right.width != 0 && borders.right.style > litehtml::border_style_hidden)
-	{
-		bdr_right = (int) borders.right.width;
-		std::cout << "	Border right: " << bdr_right << std::endl;
-	}
-	
-	
-	if (bdr_bottom)
-	{
-		// draw rectangle for now - no check for radius
-		StrokeRect(
-			BRect(
-				BPoint(draw_pos.left(), draw_pos.bottom()),
-				BPoint(draw_pos.left() + bdr_left, draw_pos.bottom() - bdr_bottom)
-			)
-		);
-	}
-}
-
-void 
-LiteHtmlView::transform_text(litehtml::tstring& text, litehtml::text_transform tt)
-{
-	std::cout << "transform_text" << std::endl;
-}
-
-void 
-LiteHtmlView::set_clip( const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius )
-{
-	std::cout << "set_clip" << std::endl;
-}
-
-void 
-LiteHtmlView::del_clip()
-{
-	std::cout << "del_clip" << std::endl;
-}
-
-
-
-std::shared_ptr<litehtml::element>	
-LiteHtmlView::create_element(const litehtml::tchar_t *tag_name,
-							 const litehtml::string_map &attributes,
-							 const std::shared_ptr<litehtml::document> &doc)
-{
-	//std::cout << "create_element" << std::endl;
-	return 0;
-}
-
-void 
-LiteHtmlView::get_media_features(litehtml::media_features& media) const
-{
-	std::cout << "get_media_features" << std::endl;
-	litehtml::position client;
-    get_client_rect(client);
-	media.type			= litehtml::media_type_screen;
-	media.width			= client.width;
-	media.height		= client.height;
-	BRect bounds(Bounds());
-	media.device_width	= bounds.Width();
-	media.device_height	= bounds.Height();
-	media.color			= 8;
-	media.monochrome	= 0;
-	media.color_index	= 256;
-	media.resolution	= 96;
-}
-
-void 
-LiteHtmlView::link(const std::shared_ptr<litehtml::document> &ptr, const litehtml::element::ptr& el)
-{
-	std::cout << "link" << std::endl;
-}
-
-void 
-LiteHtmlView::set_caption(const char* caption)
-{
-	std::cout << "set_caption" << std::endl;
-}
-
-void
-LiteHtmlView::get_client_rect(litehtml::position& client) const
-{
-	//std::cout << "get_client_rect" << std::endl;
-	BRect bounds(Bounds());
-	BPoint leftTop = bounds.LeftTop();
-	client.width = bounds.Width();
-	client.height = bounds.Height();
-	client.x = leftTop.x;
-	client.y = leftTop.y;
-}
-
-void 
-LiteHtmlView::on_anchor_click(const char* base, const litehtml::element::ptr& anchor)
-{
-	std::cout << "on_anchor_click" << std::endl;
-}
-
-void 
-LiteHtmlView::set_cursor(const char* cursor)
-{
-	std::cout << "set_cursor" << std::endl;
-}
-
-void 
-LiteHtmlView::import_css(litehtml::tstring& s1, const litehtml::tstring& s2, litehtml::tstring& s3)
-{
-	std::cout << "import_css" << std::endl;
-}
-
-void 
-LiteHtmlView::get_language(litehtml::tstring& s1, litehtml::tstring& s2) const
-{
-	std::cout << "get_language" << std::endl;
-}
diff --git a/libs/litehtml/containers/haiku/container_haiku.h b/libs/litehtml/containers/haiku/container_haiku.h
deleted file mode 100644
index 77d0344975..0000000000
--- a/libs/litehtml/containers/haiku/container_haiku.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * Copyright 2019-2020 Haiku Inc.
- * All rights reserved. Distributed under the terms of the BSD 3-clause license.
- * Constributors
- * 2019-2020	Adam Fowler <adamfowleruk@gmail.com>
- */
-#ifndef LITEHTMLVIEW_H
-#define LITEHTMLVIEW_H
-
-#include "../../include/litehtml.h"
-
-#include <map>
-#include <string>
-
-#include <View.h>
-
-class BBitmap;
-
-
-enum {
-	M_HTML_RENDERED = 'hrnd'
-};
-
-class LiteHtmlView : public BView, public litehtml::document_container
-{
-public:
-										//LiteHtmlView(BMessage *archive);
-										LiteHtmlView(BRect frame, const char *name);
-										//LiteHtmlView(const char *name, uint32 flags, BLayout *layout=NULL);
-								
-	virtual								~LiteHtmlView();
-	
-			void						SetContext(litehtml::context* ctx);
-			void						RenderFile(const char* localFilePath);
-			void						RenderHTML(const std::string& htmlText);
-			
-			
-	virtual litehtml::uint_ptr			create_font(const litehtml::tchar_t* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm) override;
-	virtual void						delete_font(litehtml::uint_ptr hFont) override;
-	virtual int							text_width(const litehtml::tchar_t* text, litehtml::uint_ptr hFont) override;
-	virtual void						draw_text(litehtml::uint_ptr hdc, const litehtml::tchar_t* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos) override;
-	virtual int							pt_to_px(int pt) override;
-	virtual int							get_default_font_size() const override;
-	virtual const litehtml::tchar_t*	get_default_font_name() const override;
-	virtual void 						load_image(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, bool redraw_on_ready) override;
-	virtual void						get_image_size(const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, litehtml::size& sz) override;
-	virtual void						draw_background(litehtml::uint_ptr hdc, const litehtml::background_paint& bg) override;
-	virtual void						draw_borders(litehtml::uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root) override;
-	virtual void 						draw_list_marker(litehtml::uint_ptr hdc, const litehtml::list_marker& marker) override;
-	virtual std::shared_ptr<litehtml::element>	create_element(const litehtml::tchar_t *tag_name,
-																 const litehtml::string_map &attributes,
-																 const std::shared_ptr<litehtml::document> &doc) override;
-	virtual void						get_media_features(litehtml::media_features& media) const override;
-	//virtual void						get_language(litehtml::tstring& language, litehtml::tstring & culture) const override;
-	virtual void 						link(const std::shared_ptr<litehtml::document> &ptr, const litehtml::element::ptr& el) override;
-
-
-	virtual	void						transform_text(litehtml::tstring& text, litehtml::text_transform tt) override;
-	virtual void						set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius) override;
-	virtual void						del_clip() override;
-	
-	// unimplemented
-	virtual void 						set_caption(const char*);
-	virtual void						get_client_rect(litehtml::position& client) const;
-	virtual void 						set_base_url(const char*);
-	virtual void 						on_anchor_click(const char*, const litehtml::element::ptr&);
-	virtual void 						set_cursor(const char*);
-	virtual void 						import_css(litehtml::tstring&, const litehtml::tstring&, litehtml::tstring&);
-	virtual void 						get_language(litehtml::tstring&, litehtml::tstring&) const;
-	
-	//BView
-	virtual void 						Draw(BRect updateRect) override;
-	virtual void						GetPreferredSize(float* width, float* height) override;
-	
-protected:
-	void								make_url(const litehtml::tchar_t* url, const litehtml::tchar_t* basepath, litehtml::tstring& out);
-	virtual void						draw_image( litehtml::uint_ptr hdc, const litehtml::tchar_t* src, const litehtml::tchar_t* baseurl, const litehtml::position& pos );
-	
-private:
-	litehtml::context*					fContext;
-	litehtml::document::ptr				m_html;
-	std::map<const std::string,BBitmap*> m_images;
-	litehtml::tstring					m_base_url;
-	litehtml::tstring					m_url;
-};
-
-#endif
diff --git a/libs/litehtml/containers/test/Bitmap.cpp b/libs/litehtml/containers/test/Bitmap.cpp
deleted file mode 100644
index 169b50e091..0000000000
--- a/libs/litehtml/containers/test/Bitmap.cpp
+++ /dev/null
@@ -1,129 +0,0 @@
-#include "Bitmap.h"
-#include "lodepng.h"
-using namespace std;
-
-web_color Bitmap::get_pixel(int x, int y) const
-{
-	if (x < 0 || x >= width || y < 0 || y >= height)
-		return web_color::black;
-	else
-		return data[x + y * width];
-}
-
-void Bitmap::set_pixel(int x, int y, web_color color)
-{
-	if (x < 0 || x >= width || y < 0 || y >= height) return;
-	if (color.alpha == 0) return;
-	data[x + y * width] = color;
-}
-
-// endpoint is not drawn, like in GDI
-void Bitmap::draw_line(int x0, int y0, int x1, int y1, web_color color)
-{
-	if (x0 != x1 && y0 != y1) return; // only horz and vert lines supported
-
-	if (x0 == x1) // vert line
-	{
-		if (y0 > y1) swap(y0, y1);
-		for (int y = y0; y < y1; y++)
-			set_pixel(x0, y, color);
-	}
-	else if (y0 == y1) // horz line
-	{
-		if (x0 > x1) swap(x0, x1);
-		for (int x = x0; x < x1; x++)
-			set_pixel(x, y0, color);
-	}
-}
-
-void Bitmap::draw_rect(int x, int y, int _width, int _height, web_color color)
-{
-	draw_line(x, y,               x + _width, y,               color); // top
-	draw_line(x, y + _height - 1, x + _width, y + _height - 1, color); // bottom
-	draw_line(x,              y, x,              y + _height, color); // left
-	draw_line(x + _width - 1, y, x + _width - 1, y + _height, color); // right
-}
-
-void Bitmap::fill_rect(position rect, web_color color)
-{
-	for (int y = rect.top(); y < rect.bottom(); y++)
-		for (int x = rect.left(); x < rect.right(); x++)
-			set_pixel(x, y, color);
-}
-
-void Bitmap::draw_bitmap(int x0, int y0, const Bitmap& bmp)
-{
-	for (int y = 0; y < bmp.height; y++)
-		for (int x = 0; x < bmp.width; x++)
-			set_pixel(x0 + x, y0 + y, bmp.get_pixel(x, y));
-}
-
-void Bitmap::replace_color(web_color original, web_color replacement)
-{
-	for (auto& pixel : data)
-	{
-		if (pixel == original)
-			pixel = replacement;
-	}
-}
-
-// find minimal rectangle containing pixels different from bgcolor
-position Bitmap::find_picture(web_color bgcolor)
-{
-	auto horz_line_empty = [&](int y) {
-		for (int x = 0; x < width; x++)
-			if (data[x + y * width] != bgcolor) return false;
-		return true;
-	};
-	auto vert_line_empty = [&](int x) {
-		for (int y = 0; y < height; y++)
-			if (data[x + y * width] != bgcolor) return false;
-		return true;
-	};
-
-	position pos;
-	int y;
-	for (y = 0; y < height && horz_line_empty(y); y++);
-	if (y == height) return pos; // no picture
-	pos.y = y;
-	for (y = height - 1; y >= 0 && horz_line_empty(y); y--);
-	pos.height = y + 1 - pos.y;
-
-	int x;
-	for (x = 0; x < width && vert_line_empty(x); x++);
-	pos.x = x;
-	for (x = width - 1; x >= 0 && vert_line_empty(x); x--);
-	pos.width = x + 1 - pos.x;
-
-	return pos;
-}
-
-void Bitmap::resize(int new_width, int new_height)
-{
-	vector<web_color> new_data(new_width * new_height, web_color::white);
-	for (int y = 0; y < min(new_height, height); y++)
-		for (int x = 0; x < min(new_width, width); x++)
-			new_data[x + y * new_width] = data[x + y * width];
-	
-	width = new_width;
-	height = new_height;
-	data = new_data;
-}
-
-void Bitmap::load(string filename)
-{
-	vector<unsigned char> image;
-	unsigned w, h;
-	lodepng::decode(image, w, h, filename);
-	if (w * h == 0) return;
-	
-	width = w;
-	height = h;
-	data.resize(w * h);
-	memcpy(data.data(), image.data(), w * h * 4);
-}
-
-void Bitmap::save(string filename)
-{
-	lodepng::encode(filename, (unsigned char*)data.data(), width, height);
-}
diff --git a/libs/litehtml/containers/test/Bitmap.h b/libs/litehtml/containers/test/Bitmap.h
deleted file mode 100644
index bb66d190b0..0000000000
--- a/libs/litehtml/containers/test/Bitmap.h
+++ /dev/null
@@ -1,36 +0,0 @@
-#include <litehtml.h>
-using namespace litehtml;
-
-class Bitmap
-{
-public:
-	int width  = 0;
-	int height = 0;
-	std::vector<web_color> data;
-
-	Bitmap() {}
-	Bitmap(int width, int height, web_color color = web_color::white) : width(width), height(height)
-	{
-		data.resize(width * height, color);
-	}
-	Bitmap(string filename)
-	{
-		load(filename);
-	}
-
-	bool operator==(const Bitmap& bmp) const { return width == bmp.width && height == bmp.height && data == bmp.data; }
-	bool operator!=(const Bitmap& bmp) const { return !(*this == bmp); }
-
-	web_color get_pixel(int x, int y) const;
-	void set_pixel(int x, int y, web_color color);
-	void draw_line(int x0, int y0, int x1, int y1, web_color color);
-	void draw_rect(int x, int y, int width, int height, web_color color);
-	void fill_rect(position rect, web_color color);
-	void draw_bitmap(int x, int y, const Bitmap& bmp);
-	void replace_color(web_color original, web_color replacement);
-
-	position find_picture(web_color bgcolor = web_color::white);
-	void resize(int new_width, int new_height);
-	void load(string filename);
-	void save(string filename);
-};
\ No newline at end of file
diff --git a/libs/litehtml/containers/test/Font.cpp b/libs/litehtml/containers/test/Font.cpp
deleted file mode 100644
index 5f8c42f396..0000000000
--- a/libs/litehtml/containers/test/Font.cpp
+++ /dev/null
@@ -1,126 +0,0 @@
-#define _CRT_SECURE_NO_WARNINGS
-#include "Font.h"
-string readfile(string filename);
-using namespace std;
-
-string Font::font_dir = "../containers/test/fonts/"; // ctest is run from litehtml/build
-Font::size_name Font::installed_fonts[] =
-{
-	{ 12, "terminus-ascii-bold-12px.yaff" },
-	{ 14, "terminus-ascii-bold-14px.yaff" },
-	{ 16, "terminus-ascii-bold-16px.yaff" },
-	{ 18, "terminus-ascii-bold-18px.yaff" },
-	{ 20, "terminus-ascii-bold-20px.yaff" },
-	{ 22, "terminus-ascii-bold-22px.yaff" },
-	{ 24, "terminus-ascii-bold-24px.yaff" },
-	{ 28, "terminus-ascii-bold-28px.yaff" },
-	{ 32, "terminus-ascii-bold-32px.yaff" },
-	{ 0, "" }
-};
-
-Font::Font(int size)
-{
-	// find most suitable font
-	int min_diff = 1000;
-	int n = 0;
-	for (int i = 0; installed_fonts[i].size; i++)
-	{
-		int diff = abs(installed_fonts[i].size - size);
-		if (diff < min_diff)
-		{
-			min_diff = diff;
-			n = i;
-		}
-	}
-	
-	load(font_dir + installed_fonts[n].name);
-}
-
-Bitmap Font::get_glyph(int ch, web_color color)
-{
-	if (ch < 0 || ch >= 128 || glyphs[ch].width == 0)
-	{
-		Bitmap bmp(width, height, web_color::transparent);
-		bmp.draw_rect(1, 1, width - 2, height - 2, color);
-		return bmp;
-	}
-	else if (color != web_color::black)
-	{
-		Bitmap bmp = glyphs[ch];
-		bmp.replace_color(web_color::black, color);
-		return bmp;
-	}
-	else
-	{
-		return glyphs[ch];
-	}
-}
-
-// load .yaff font file in an ad hoc manner (can't parse arbitrary yaff files)
-void Font::load(string filename)
-{
-	string text = readfile(filename);
-	
-	string_vector lines;
-	split_string(text, lines, "\n");
-
-	int i;
-	// parse header
-	for (i = 0; i < (int) lines.size(); i++)
-	{
-		string line = lines[i];
-		trim(line);
-		if (line.empty() || line[0] == '#') continue; // skip empty lines and comments
-
-		auto sep = line.find(':');
-		if (sep == string::npos) return; // line without ':' - error
-
-		auto key = line.substr(0, sep);   trim(key);
-		auto val = line.substr(sep + 1);  trim(val);
-		if (val.empty()) break; // end of header
-
-		if (key == "cell-size")    sscanf(val.c_str(), "%d %d", &width, &height);
-		else if (key == "ascent")  ascent = atoi(val.c_str());
-		else if (key == "descent") descent = atoi(val.c_str());
-	}
-
-	// parse glyphs
-	
-	// only u+NNNN: label is recognized, all others are skipped
-	auto parse_key = [&]() {
-		int ch = -1;
-		for (; i < (int) lines.size(); i++)
-		{
-			string line = lines[i];
-			trim(line);
-			if (line.empty()) continue;
-			if (line.find(':') == string::npos) break; // start of glyph data
-			if (line.substr(0, 2) == "u+")
-				sscanf(line.c_str(), "u+%X:", (unsigned int*) &ch);
-		}
-		return ch;
-	};
-	
-	auto parse_glyph = [&](int ch) {
-		Bitmap& glyph = glyphs[ch] = Bitmap(width, height, web_color::transparent);
-		for (int y = 0; i < (int) lines.size() && y < height; i++, y++)
-		{
-			string line = lines[i];
-			trim(line);
-			for (int x = 0; x < min((int)line.size(), width); x++)
-			{
-				if (line[x] == '@')
-					glyph.set_pixel(x, y, web_color::black);
-			}
-		}
-	};
-
-	while (i < (int) lines.size())
-	{
-		int ch = parse_key();
-		if (ch < 0 || ch >= 128) break;
-		parse_glyph(ch);
-	}
-
-	x_height = glyphs['x'].find_picture(web_color::transparent).height;
-}
diff --git a/libs/litehtml/containers/test/Font.h b/libs/litehtml/containers/test/Font.h
deleted file mode 100644
index 4f3c01297d..0000000000
--- a/libs/litehtml/containers/test/Font.h
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "Bitmap.h"
-
-class Font
-{
-public:
-	int width    = 0;
-	int height   = 0;
-	int ascent   = 0;
-	int descent  = 0;
-	int x_height = 0;
-	Bitmap glyphs[128];
-	
-	static string font_dir;
-	static struct size_name { int size; string name; } installed_fonts[];
-	
-	Font(int size);
-	Bitmap get_glyph(int ch, web_color color);
-	void load(string filename);
-};
\ No newline at end of file
diff --git a/libs/litehtml/containers/test/fonts/OFL.txt b/libs/litehtml/containers/test/fonts/OFL.txt
deleted file mode 100644
index a5c2627a14..0000000000
--- a/libs/litehtml/containers/test/fonts/OFL.txt
+++ /dev/null
@@ -1,94 +0,0 @@
-Copyright (C) 2020 Dimitar Toshkov Zhekov,
-with Reserved Font Name "Terminus Font".
-
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-http://scripts.sil.org/OFL
-
-
------------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
------------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font creation
-efforts of academic and linguistic communities, and to provide a free and
-open framework in which fonts may be shared and improved in partnership
-with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded,
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply
-to any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software components as
-distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to, deleting,
-or substituting -- in part or in whole -- any of the components of the
-Original Version, by changing formats or by porting the Font Software to a
-new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed, modify,
-redistribute, and sell modified and unmodified copies of the Font
-Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components,
-in Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the corresponding
-Copyright Holder. This restriction only applies to the primary font name as
-presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created
-using the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.
diff --git a/libs/litehtml/containers/test/fonts/readme.txt b/libs/litehtml/containers/test/fonts/readme.txt
deleted file mode 100644
index a093284333..0000000000
--- a/libs/litehtml/containers/test/fonts/readme.txt
+++ /dev/null
@@ -1,12 +0,0 @@
-Note: Fonts in this directory are not automatically picked up, you have to update Font::installed_fonts.
-
-Terminus Font:
-Sizes: 6x12, 8x14, 8x16, 10x18, 10x20, 11x22, 12x24, 14x28, 16x32.
-https://terminus-font.sourceforge.net
-https://sourceforge.net/projects/terminus-font/files/terminus-font-4.49/terminus-font-4.49.1.tar.gz
-
-bdf -> yaff conversion:
-https://github.com/robhagemans/monobit
-pip install monobit
-monobit-convert ter-u14b.bdf to ter-u14b.yaff
-then manually removed non-ascii chars
diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-12px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-12px.yaff
deleted file mode 100644
index 0639cedfea..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-12px.yaff
+++ /dev/null
@@ -1,1463 +0,0 @@
-name: Terminus Bold 6x12
-spacing: character-cell
-cell-size: 6 12
-family: Terminus
-foundry: xos4
-copyright: Copyright (C) 2020 Dimitar Toshkov Zhekov
-notice: Licensed under the SIL Open Font License, Version 1.1
-point-size: 12
-weight: bold
-slant: roman
-setwidth: normal
-dpi: 72 72
-average-width: 6
-ascent: 10
-descent: 2
-shift-up: -2
-encoding: iso10646-1
-default-char: u+fffd
-min-word-space: 6
-converter: monobit v0.32
-source-name: ter-u12b.bdf
-source-format: BDF v2.1
-history: load --format=bdf
-
-u+0000:
-char0:
-    ......
-    ......
-    @@.@@.
-    @...@.
-    ......
-    @...@.
-    @...@.
-    ......
-    @...@.
-    @@.@@.
-    ......
-    ......
-
-u+0020:
-space:
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-
-u+0021:
-exclam:
-    ......
-    ......
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-
-u+0022:
-quotedbl:
-    ......
-    .@.@..
-    .@.@..
-    .@.@..
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-
-u+0023:
-numbersign:
-    ......
-    ......
-    .@.@..
-    .@.@..
-    @@@@@.
-    .@.@..
-    .@.@..
-    @@@@@.
-    .@.@..
-    .@.@..
-    ......
-    ......
-
-u+0024:
-dollar:
-    ......
-    ......
-    ..@...
-    .@@@..
-    @.@.@.
-    @.@...
-    .@@@..
-    ..@.@.
-    @.@.@.
-    .@@@..
-    ..@...
-    ......
-
-u+0025:
-percent:
-    ......
-    ......
-    .@..@.
-    @.@.@.
-    .@.@..
-    ...@..
-    ..@...
-    ..@.@.
-    .@.@.@
-    .@..@.
-    ......
-    ......
-
-u+0026:
-ampersand:
-    ......
-    ......
-    ..@...
-    .@.@..
-    .@.@..
-    ..@...
-    .@@.@.
-    @..@..
-    @..@..
-    .@@.@.
-    ......
-    ......
-
-u+0027:
-quotesingle:
-    ......
-    ..@...
-    ..@...
-    ..@...
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-
-u+0028:
-parenleft:
-    ......
-    ......
-    ...@..
-    ..@...
-    .@....
-    .@....
-    .@....
-    .@....
-    ..@...
-    ...@..
-    ......
-    ......
-
-u+0029:
-parenright:
-    ......
-    ......
-    .@....
-    ..@...
-    ...@..
-    ...@..
-    ...@..
-    ...@..
-    ..@...
-    .@....
-    ......
-    ......
-
-u+002a:
-asterisk:
-    ......
-    ......
-    ......
-    ......
-    .@.@..
-    ..@...
-    @@@@@.
-    ..@...
-    .@.@..
-    ......
-    ......
-    ......
-
-u+002b:
-plus:
-    ......
-    ......
-    ......
-    ......
-    ..@...
-    ..@...
-    @@@@@.
-    ..@...
-    ..@...
-    ......
-    ......
-    ......
-
-u+002c:
-comma:
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ..@...
-    ..@...
-    .@....
-    ......
-
-u+002d:
-hyphen:
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    @@@@@.
-    ......
-    ......
-    ......
-    ......
-    ......
-
-u+002e:
-period:
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-
-u+002f:
-slash:
-    ......
-    ......
-    ....@.
-    ....@.
-    ...@..
-    ...@..
-    ..@...
-    ..@...
-    .@....
-    .@....
-    ......
-    ......
-
-u+0030:
-zero:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @..@@.
-    @.@.@.
-    @@..@.
-    @...@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0031:
-one:
-    ......
-    ......
-    ..@...
-    .@@...
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    .@@@..
-    ......
-    ......
-
-u+0032:
-two:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
-    ....@.
-    ...@..
-    ..@...
-    .@....
-    @@@@@.
-    ......
-    ......
-
-u+0033:
-three:
-    ......
-    ......
-    .@@@..
-    @...@.
-    ....@.
-    ..@@..
-    ....@.
-    ....@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0034:
-four:
-    ......
-    ......
-    ....@.
-    ...@@.
-    ..@.@.
-    .@..@.
-    @...@.
-    @@@@@.
-    ....@.
-    ....@.
-    ......
-    ......
-
-u+0035:
-five:
-    ......
-    ......
-    @@@@@.
-    @.....
-    @.....
-    @@@@..
-    ....@.
-    ....@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0036:
-six:
-    ......
-    ......
-    .@@@..
-    @.....
-    @.....
-    @@@@..
-    @...@.
-    @...@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0037:
-seven:
-    ......
-    ......
-    @@@@@.
-    ....@.
-    ....@.
-    ...@..
-    ...@..
-    ..@...
-    ..@...
-    ..@...
-    ......
-    ......
-
-u+0038:
-eight:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
-    .@@@..
-    @...@.
-    @...@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0039:
-nine:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
-    @...@.
-    .@@@@.
-    ....@.
-    ....@.
-    .@@@..
-    ......
-    ......
-
-u+003a:
-colon:
-    ......
-    ......
-    ......
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-
-u+003b:
-semicolon:
-    ......
-    ......
-    ......
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-    ..@...
-    ..@...
-    .@....
-    ......
-
-u+003c:
-less:
-    ......
-    ......
-    ......
-    ....@.
-    ...@..
-    ..@...
-    .@....
-    ..@...
-    ...@..
-    ....@.
-    ......
-    ......
-
-u+003d:
-equal:
-    ......
-    ......
-    ......
-    ......
-    @@@@@.
-    ......
-    ......
-    @@@@@.
-    ......
-    ......
-    ......
-    ......
-
-u+003e:
-greater:
-    ......
-    ......
-    ......
-    .@....
-    ..@...
-    ...@..
-    ....@.
-    ...@..
-    ..@...
-    .@....
-    ......
-    ......
-
-u+003f:
-question:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
-    ...@..
-    ..@...
-    ......
-    ..@...
-    ..@...
-    ......
-    ......
-
-u+0040:
-at:
-    ......
-    ......
-    .@@@..
-    @...@.
-    @..@@.
-    @.@.@.
-    @.@.@.
-    @..@@.
-    @.....
-    .@@@@.
-    ......
-    ......
-
-u+0041:
-"A":
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
-    @...@.
-    @@@@@.
-    @...@.
-    @...@.
-    @...@.
-    ......
-    ......
-
-u+0042:
-"B":
-    ......
-    ......
-    @@@@..
-    @...@.
-    @...@.
-    @@@@..
-    @...@.
-    @...@.
-    @...@.
-    @@@@..
-    ......
-    ......
-
-u+0043:
-"C":
-    ......
-    ......
-    .@@@..
-    @...@.
-    @.....
-    @.....
-    @.....
-    @.....
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0044:
-"D":
-    ......
-    ......
-    @@@...
-    @..@..
-    @...@.
-    @...@.
-    @...@.
-    @...@.
-    @..@..
-    @@@...
-    ......
-    ......
-
-u+0045:
-"E":
-    ......
-    ......
-    @@@@@.
-    @.....
-    @.....
-    @@@@..
-    @.....
-    @.....
-    @.....
-    @@@@@.
-    ......
-    ......
-
-u+0046:
-"F":
-    ......
-    ......
-    @@@@@.
-    @.....
-    @.....
-    @@@@..
-    @.....
-    @.....
-    @.....
-    @.....
-    ......
-    ......
-
-u+0047:
-"G":
-    ......
-    ......
-    .@@@..
-    @...@.
-    @.....
-    @.....
-    @.@@@.
-    @...@.
-    @...@.
-    .@@@..
-    ......
-    ......
-
-u+0048:
-"H":
-    ......
-    ......
-    @...@.
-    @...@.
-    @...@.
-    @@@@@.
-    @...@.
-    @...@.
-    @...@.
-    @...@.
-    ......
-    ......
-
-u+0049:
-"I":
-    ......
-    ......
-    .@@@..
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    ..@...
-    .@@@..
-    ......
-    ......
-
-u+004a:
-"J":
-    ......
-    ......
-    ..@@@.
-    ...@..
-    ...@..
-    ...@..
-    ...@..
-    @..@..
-    @..@..
-    .@@...
-    ......
-    ......
-
-u+004b:
-"K":
-    ......
-    ......
-    @...@.
-    @..@..
-    @.@...
-    @@....
-    @@....
-    @.@...
-    @..@..
-    @...@.
-    ......
-    ......
-
-u+004c:
-"L":
-    ......
-    ......
-    @.....
-    @.....
-    @.....
-    @.....
-    @.....
-    @.....
-    @.....
-    @@@@@.
-    ......
-    ......
-
-u+004d:
-"M":
-    ......
-    ......
-    @...@.
-    @@.@@.
-    @.@.@.
-    @.@.@.
-    @...@.
-    @...@.
-    @...@.
-    @...@.
-    ......
-    ......
-
-u+004e:
-"N":
-    ......
-    ......
-    @...@.
-    @...@.
-    @@..@.
-    @.@.@.
-    @..@@.
-    @...@.
-    @...@.
-    @...@.
-    ......
-    ......
-
-u+004f:
-"O":
-    ......
-    ......
-    .@@@..
-    @...@.
-    @...@.
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-14px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-14px.yaff
deleted file mode 100644
index 5ce69e8816..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-14px.yaff
+++ /dev/null
@@ -1,1656 +0,0 @@
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-16px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-16px.yaff
deleted file mode 100644
index 9316bb7f78..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-16px.yaff
+++ /dev/null
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-18px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-18px.yaff
deleted file mode 100644
index d13e3fb609..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-18px.yaff
+++ /dev/null
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-20px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-20px.yaff
deleted file mode 100644
index 2dabca867f..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-20px.yaff
+++ /dev/null
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-22px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-22px.yaff
deleted file mode 100644
index 1b00265e2e..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-22px.yaff
+++ /dev/null
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-24px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-24px.yaff
deleted file mode 100644
index 422a956646..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-24px.yaff
+++ /dev/null
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diff --git a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-28px.yaff b/libs/litehtml/containers/test/fonts/terminus-ascii-bold-28px.yaff
deleted file mode 100644
index c612cc5f3d..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-28px.yaff
+++ /dev/null
@@ -1,3000 +0,0 @@
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-u+0036:
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-u+0038:
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-u+003f:
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-u+0040:
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-u+0041:
-"A":
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-u+0042:
-"B":
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-u+0043:
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-u+0044:
-"D":
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-u+0045:
-"E":
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-u+0046:
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-u+0047:
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-u+0048:
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-u+004a:
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-u+0051:
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-u+0052:
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-u+0053:
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-u+0054:
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deleted file mode 100644
index 30a70727dd..0000000000
--- a/libs/litehtml/containers/test/fonts/terminus-ascii-bold-32px.yaff
+++ /dev/null
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-    ................
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diff --git a/libs/litehtml/containers/test/lodepng.cpp b/libs/litehtml/containers/test/lodepng.cpp
deleted file mode 100644
index abf4ed4d82..0000000000
--- a/libs/litehtml/containers/test/lodepng.cpp
+++ /dev/null
@@ -1,6661 +0,0 @@
-// stasoid: disabled warnings 4334 and 4267
-/*
-LodePNG version 20221108
-
-Copyright (c) 2005-2022 Lode Vandevenne
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-*/
-
-/*
-The manual and changelog are in the header file "lodepng.h"
-Rename this file to lodepng.cpp to use it for C++, or to lodepng.c to use it for C.
-*/
-
-#include "lodepng.h"
-
-#ifdef LODEPNG_COMPILE_DISK
-#include <limits.h> /* LONG_MAX */
-#include <stdio.h> /* file handling */
-#endif /* LODEPNG_COMPILE_DISK */
-
-#ifdef LODEPNG_COMPILE_ALLOCATORS
-#include <stdlib.h> /* allocations */
-#endif /* LODEPNG_COMPILE_ALLOCATORS */
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1310) /*Visual Studio: A few warning types are not desired here.*/
-#pragma warning( disable : 4244 ) /*implicit conversions: not warned by gcc -Wall -Wextra and requires too much casts*/
-#pragma warning( disable : 4996 ) /*VS does not like fopen, but fopen_s is not standard C so unusable here*/
-#pragma warning( disable : 4334 ) // result of 32-bit shift implicitly converted to 64 bits (was 64-bit shift intended?)
-#pragma warning( disable : 4267 ) // conversion from 'size_t' to 'unsigned short', possible loss of data
-#endif /*_MSC_VER */
-
-const char* LODEPNG_VERSION_STRING = "20221108";
-
-/*
-This source file is divided into the following large parts. The code sections
-with the "LODEPNG_COMPILE_" #defines divide this up further in an intermixed way.
--Tools for C and common code for PNG and Zlib
--C Code for Zlib (huffman, deflate, ...)
--C Code for PNG (file format chunks, adam7, PNG filters, color conversions, ...)
--The C++ wrapper around all of the above
-*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* // Tools for C, and common code for PNG and Zlib.                       // */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*The malloc, realloc and free functions defined here with "lodepng_" in front
-of the name, so that you can easily change them to others related to your
-platform if needed. Everything else in the code calls these. Pass
--DLODEPNG_NO_COMPILE_ALLOCATORS to the compiler, or comment out
-#define LODEPNG_COMPILE_ALLOCATORS in the header, to disable the ones here and
-define them in your own project's source files without needing to change
-lodepng source code. Don't forget to remove "static" if you copypaste them
-from here.*/
-
-#ifdef LODEPNG_COMPILE_ALLOCATORS
-static void* lodepng_malloc(size_t size) {
-#ifdef LODEPNG_MAX_ALLOC
-  if(size > LODEPNG_MAX_ALLOC) return 0;
-#endif
-  return malloc(size);
-}
-
-/* NOTE: when realloc returns NULL, it leaves the original memory untouched */
-static void* lodepng_realloc(void* ptr, size_t new_size) {
-#ifdef LODEPNG_MAX_ALLOC
-  if(new_size > LODEPNG_MAX_ALLOC) return 0;
-#endif
-  return realloc(ptr, new_size);
-}
-
-static void lodepng_free(void* ptr) {
-  free(ptr);
-}
-#else /*LODEPNG_COMPILE_ALLOCATORS*/
-/* TODO: support giving additional void* payload to the custom allocators */
-void* lodepng_malloc(size_t size);
-void* lodepng_realloc(void* ptr, size_t new_size);
-void lodepng_free(void* ptr);
-#endif /*LODEPNG_COMPILE_ALLOCATORS*/
-
-/* convince the compiler to inline a function, for use when this measurably improves performance */
-/* inline is not available in C90, but use it when supported by the compiler */
-#if (defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) || (defined(__cplusplus) && (__cplusplus >= 199711L))
-#define LODEPNG_INLINE inline
-#else
-#define LODEPNG_INLINE /* not available */
-#endif
-
-/* restrict is not available in C90, but use it when supported by the compiler */
-#if (defined(__GNUC__) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))) ||\
-    (defined(_MSC_VER) && (_MSC_VER >= 1400)) || \
-    (defined(__WATCOMC__) && (__WATCOMC__ >= 1250) && !defined(__cplusplus))
-#define LODEPNG_RESTRICT __restrict
-#else
-#define LODEPNG_RESTRICT /* not available */
-#endif
-
-/* Replacements for C library functions such as memcpy and strlen, to support platforms
-where a full C library is not available. The compiler can recognize them and compile
-to something as fast. */
-
-static void lodepng_memcpy(void* LODEPNG_RESTRICT dst,
-                           const void* LODEPNG_RESTRICT src, size_t size) {
-  size_t i;
-  for(i = 0; i < size; i++) ((char*)dst)[i] = ((const char*)src)[i];
-}
-
-static void lodepng_memset(void* LODEPNG_RESTRICT dst,
-                           int value, size_t num) {
-  size_t i;
-  for(i = 0; i < num; i++) ((char*)dst)[i] = (char)value;
-}
-
-/* does not check memory out of bounds, do not use on untrusted data */
-static size_t lodepng_strlen(const char* a) {
-  const char* orig = a;
-  /* avoid warning about unused function in case of disabled COMPILE... macros */
-  (void)(&lodepng_strlen);
-  while(*a) a++;
-  return (size_t)(a - orig);
-}
-
-#define LODEPNG_MAX(a, b) (((a) > (b)) ? (a) : (b))
-#define LODEPNG_MIN(a, b) (((a) < (b)) ? (a) : (b))
-#define LODEPNG_ABS(x) ((x) < 0 ? -(x) : (x))
-
-#if defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_DECODER)
-/* Safely check if adding two integers will overflow (no undefined
-behavior, compiler removing the code, etc...) and output result. */
-static int lodepng_addofl(size_t a, size_t b, size_t* result) {
-  *result = a + b; /* Unsigned addition is well defined and safe in C90 */
-  return *result < a;
-}
-#endif /*defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_DECODER)*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-/* Safely check if multiplying two integers will overflow (no undefined
-behavior, compiler removing the code, etc...) and output result. */
-static int lodepng_mulofl(size_t a, size_t b, size_t* result) {
-  *result = a * b; /* Unsigned multiplication is well defined and safe in C90 */
-  return (a != 0 && *result / a != b);
-}
-
-#ifdef LODEPNG_COMPILE_ZLIB
-/* Safely check if a + b > c, even if overflow could happen. */
-static int lodepng_gtofl(size_t a, size_t b, size_t c) {
-  size_t d;
-  if(lodepng_addofl(a, b, &d)) return 1;
-  return d > c;
-}
-#endif /*LODEPNG_COMPILE_ZLIB*/
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-
-/*
-Often in case of an error a value is assigned to a variable and then it breaks
-out of a loop (to go to the cleanup phase of a function). This macro does that.
-It makes the error handling code shorter and more readable.
-
-Example: if(!uivector_resize(&lz77_encoded, datasize)) ERROR_BREAK(83);
-*/
-#define CERROR_BREAK(errorvar, code){\
-  errorvar = code;\
-  break;\
-}
-
-/*version of CERROR_BREAK that assumes the common case where the error variable is named "error"*/
-#define ERROR_BREAK(code) CERROR_BREAK(error, code)
-
-/*Set error var to the error code, and return it.*/
-#define CERROR_RETURN_ERROR(errorvar, code){\
-  errorvar = code;\
-  return code;\
-}
-
-/*Try the code, if it returns error, also return the error.*/
-#define CERROR_TRY_RETURN(call){\
-  unsigned error = call;\
-  if(error) return error;\
-}
-
-/*Set error var to the error code, and return from the void function.*/
-#define CERROR_RETURN(errorvar, code){\
-  errorvar = code;\
-  return;\
-}
-
-/*
-About uivector, ucvector and string:
--All of them wrap dynamic arrays or text strings in a similar way.
--LodePNG was originally written in C++. The vectors replace the std::vectors that were used in the C++ version.
--The string tools are made to avoid problems with compilers that declare things like strncat as deprecated.
--They're not used in the interface, only internally in this file as static functions.
--As with many other structs in this file, the init and cleanup functions serve as ctor and dtor.
-*/
-
-#ifdef LODEPNG_COMPILE_ZLIB
-#ifdef LODEPNG_COMPILE_ENCODER
-/*dynamic vector of unsigned ints*/
-typedef struct uivector {
-  unsigned* data;
-  size_t size; /*size in number of unsigned longs*/
-  size_t allocsize; /*allocated size in bytes*/
-} uivector;
-
-static void uivector_cleanup(void* p) {
-  ((uivector*)p)->size = ((uivector*)p)->allocsize = 0;
-  lodepng_free(((uivector*)p)->data);
-  ((uivector*)p)->data = NULL;
-}
-
-/*returns 1 if success, 0 if failure ==> nothing done*/
-static unsigned uivector_resize(uivector* p, size_t size) {
-  size_t allocsize = size * sizeof(unsigned);
-  if(allocsize > p->allocsize) {
-    size_t newsize = allocsize + (p->allocsize >> 1u);
-    void* data = lodepng_realloc(p->data, newsize);
-    if(data) {
-      p->allocsize = newsize;
-      p->data = (unsigned*)data;
-    }
-    else return 0; /*error: not enough memory*/
-  }
-  p->size = size;
-  return 1; /*success*/
-}
-
-static void uivector_init(uivector* p) {
-  p->data = NULL;
-  p->size = p->allocsize = 0;
-}
-
-/*returns 1 if success, 0 if failure ==> nothing done*/
-static unsigned uivector_push_back(uivector* p, unsigned c) {
-  if(!uivector_resize(p, p->size + 1)) return 0;
-  p->data[p->size - 1] = c;
-  return 1;
-}
-#endif /*LODEPNG_COMPILE_ENCODER*/
-#endif /*LODEPNG_COMPILE_ZLIB*/
-
-/* /////////////////////////////////////////////////////////////////////////// */
-
-/*dynamic vector of unsigned chars*/
-typedef struct ucvector {
-  unsigned char* data;
-  size_t size; /*used size*/
-  size_t allocsize; /*allocated size*/
-} ucvector;
-
-/*returns 1 if success, 0 if failure ==> nothing done*/
-static unsigned ucvector_reserve(ucvector* p, size_t size) {
-  if(size > p->allocsize) {
-    size_t newsize = size + (p->allocsize >> 1u);
-    void* data = lodepng_realloc(p->data, newsize);
-    if(data) {
-      p->allocsize = newsize;
-      p->data = (unsigned char*)data;
-    }
-    else return 0; /*error: not enough memory*/
-  }
-  return 1; /*success*/
-}
-
-/*returns 1 if success, 0 if failure ==> nothing done*/
-static unsigned ucvector_resize(ucvector* p, size_t size) {
-  p->size = size;
-  return ucvector_reserve(p, size);
-}
-
-static ucvector ucvector_init(unsigned char* buffer, size_t size) {
-  ucvector v;
-  v.data = buffer;
-  v.allocsize = v.size = size;
-  return v;
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_PNG
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-
-/*free string pointer and set it to NULL*/
-static void string_cleanup(char** out) {
-  lodepng_free(*out);
-  *out = NULL;
-}
-
-/*also appends null termination character*/
-static char* alloc_string_sized(const char* in, size_t insize) {
-  char* out = (char*)lodepng_malloc(insize + 1);
-  if(out) {
-    lodepng_memcpy(out, in, insize);
-    out[insize] = 0;
-  }
-  return out;
-}
-
-/* dynamically allocates a new string with a copy of the null terminated input text */
-static char* alloc_string(const char* in) {
-  return alloc_string_sized(in, lodepng_strlen(in));
-}
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-#endif /*LODEPNG_COMPILE_PNG*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_PNG)
-static unsigned lodepng_read32bitInt(const unsigned char* buffer) {
-  return (((unsigned)buffer[0] << 24u) | ((unsigned)buffer[1] << 16u) |
-         ((unsigned)buffer[2] << 8u) | (unsigned)buffer[3]);
-}
-#endif /*defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_PNG)*/
-
-#if defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_ENCODER)
-/*buffer must have at least 4 allocated bytes available*/
-static void lodepng_set32bitInt(unsigned char* buffer, unsigned value) {
-  buffer[0] = (unsigned char)((value >> 24) & 0xff);
-  buffer[1] = (unsigned char)((value >> 16) & 0xff);
-  buffer[2] = (unsigned char)((value >>  8) & 0xff);
-  buffer[3] = (unsigned char)((value      ) & 0xff);
-}
-#endif /*defined(LODEPNG_COMPILE_PNG) || defined(LODEPNG_COMPILE_ENCODER)*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / File IO                                                                / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_DISK
-
-/* returns negative value on error. This should be pure C compatible, so no fstat. */
-static long lodepng_filesize(const char* filename) {
-  FILE* file;
-  long size;
-  file = fopen(filename, "rb");
-  if(!file) return -1;
-
-  if(fseek(file, 0, SEEK_END) != 0) {
-    fclose(file);
-    return -1;
-  }
-
-  size = ftell(file);
-  /* It may give LONG_MAX as directory size, this is invalid for us. */
-  if(size == LONG_MAX) size = -1;
-
-  fclose(file);
-  return size;
-}
-
-/* load file into buffer that already has the correct allocated size. Returns error code.*/
-static unsigned lodepng_buffer_file(unsigned char* out, size_t size, const char* filename) {
-  FILE* file;
-  size_t readsize;
-  file = fopen(filename, "rb");
-  if(!file) return 78;
-
-  readsize = fread(out, 1, size, file);
-  fclose(file);
-
-  if(readsize != size) return 78;
-  return 0;
-}
-
-unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename) {
-  long size = lodepng_filesize(filename);
-  if(size < 0) return 78;
-  *outsize = (size_t)size;
-
-  *out = (unsigned char*)lodepng_malloc((size_t)size);
-  if(!(*out) && size > 0) return 83; /*the above malloc failed*/
-
-  return lodepng_buffer_file(*out, (size_t)size, filename);
-}
-
-/*write given buffer to the file, overwriting the file, it doesn't append to it.*/
-unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename) {
-  FILE* file;
-  file = fopen(filename, "wb" );
-  if(!file) return 79;
-  fwrite(buffer, 1, buffersize, file);
-  fclose(file);
-  return 0;
-}
-
-#endif /*LODEPNG_COMPILE_DISK*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* // End of common code and tools. Begin of Zlib related code.            // */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_ZLIB
-#ifdef LODEPNG_COMPILE_ENCODER
-
-typedef struct {
-  ucvector* data;
-  unsigned char bp; /*ok to overflow, indicates bit pos inside byte*/
-} LodePNGBitWriter;
-
-static void LodePNGBitWriter_init(LodePNGBitWriter* writer, ucvector* data) {
-  writer->data = data;
-  writer->bp = 0;
-}
-
-/*TODO: this ignores potential out of memory errors*/
-#define WRITEBIT(writer, bit){\
-  /* append new byte */\
-  if(((writer->bp) & 7u) == 0) {\
-    if(!ucvector_resize(writer->data, writer->data->size + 1)) return;\
-    writer->data->data[writer->data->size - 1] = 0;\
-  }\
-  (writer->data->data[writer->data->size - 1]) |= (bit << ((writer->bp) & 7u));\
-  ++writer->bp;\
-}
-
-/* LSB of value is written first, and LSB of bytes is used first */
-static void writeBits(LodePNGBitWriter* writer, unsigned value, size_t nbits) {
-  if(nbits == 1) { /* compiler should statically compile this case if nbits == 1 */
-    WRITEBIT(writer, value);
-  } else {
-    /* TODO: increase output size only once here rather than in each WRITEBIT */
-    size_t i;
-    for(i = 0; i != nbits; ++i) {
-      WRITEBIT(writer, (unsigned char)((value >> i) & 1));
-    }
-  }
-}
-
-/* This one is to use for adding huffman symbol, the value bits are written MSB first */
-static void writeBitsReversed(LodePNGBitWriter* writer, unsigned value, size_t nbits) {
-  size_t i;
-  for(i = 0; i != nbits; ++i) {
-    /* TODO: increase output size only once here rather than in each WRITEBIT */
-    WRITEBIT(writer, (unsigned char)((value >> (nbits - 1u - i)) & 1u));
-  }
-}
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-typedef struct {
-  const unsigned char* data;
-  size_t size; /*size of data in bytes*/
-  size_t bitsize; /*size of data in bits, end of valid bp values, should be 8*size*/
-  size_t bp;
-  unsigned buffer; /*buffer for reading bits. NOTE: 'unsigned' must support at least 32 bits*/
-} LodePNGBitReader;
-
-/* data size argument is in bytes. Returns error if size too large causing overflow */
-static unsigned LodePNGBitReader_init(LodePNGBitReader* reader, const unsigned char* data, size_t size) {
-  size_t temp;
-  reader->data = data;
-  reader->size = size;
-  /* size in bits, return error if overflow (if size_t is 32 bit this supports up to 500MB)  */
-  if(lodepng_mulofl(size, 8u, &reader->bitsize)) return 105;
-  /*ensure incremented bp can be compared to bitsize without overflow even when it would be incremented 32 too much and
-  trying to ensure 32 more bits*/
-  if(lodepng_addofl(reader->bitsize, 64u, &temp)) return 105;
-  reader->bp = 0;
-  reader->buffer = 0;
-  return 0; /*ok*/
-}
-
-/*
-ensureBits functions:
-Ensures the reader can at least read nbits bits in one or more readBits calls,
-safely even if not enough bits are available.
-The nbits parameter is unused but is given for documentation purposes, error
-checking for amount of bits must be done beforehand.
-*/
-
-/*See ensureBits documentation above. This one ensures up to 9 bits */
-static LODEPNG_INLINE void ensureBits9(LodePNGBitReader* reader, size_t nbits) {
-  size_t start = reader->bp >> 3u;
-  size_t size = reader->size;
-  if(start + 1u < size) {
-    reader->buffer = (unsigned)reader->data[start + 0] | ((unsigned)reader->data[start + 1] << 8u);
-    reader->buffer >>= (reader->bp & 7u);
-  } else {
-    reader->buffer = 0;
-    if(start + 0u < size) reader->buffer = reader->data[start + 0];
-    reader->buffer >>= (reader->bp & 7u);
-  }
-  (void)nbits;
-}
-
-/*See ensureBits documentation above. This one ensures up to 17 bits */
-static LODEPNG_INLINE void ensureBits17(LodePNGBitReader* reader, size_t nbits) {
-  size_t start = reader->bp >> 3u;
-  size_t size = reader->size;
-  if(start + 2u < size) {
-    reader->buffer = (unsigned)reader->data[start + 0] | ((unsigned)reader->data[start + 1] << 8u) |
-                     ((unsigned)reader->data[start + 2] << 16u);
-    reader->buffer >>= (reader->bp & 7u);
-  } else {
-    reader->buffer = 0;
-    if(start + 0u < size) reader->buffer |= reader->data[start + 0];
-    if(start + 1u < size) reader->buffer |= ((unsigned)reader->data[start + 1] << 8u);
-    reader->buffer >>= (reader->bp & 7u);
-  }
-  (void)nbits;
-}
-
-/*See ensureBits documentation above. This one ensures up to 25 bits */
-static LODEPNG_INLINE void ensureBits25(LodePNGBitReader* reader, size_t nbits) {
-  size_t start = reader->bp >> 3u;
-  size_t size = reader->size;
-  if(start + 3u < size) {
-    reader->buffer = (unsigned)reader->data[start + 0] | ((unsigned)reader->data[start + 1] << 8u) |
-                     ((unsigned)reader->data[start + 2] << 16u) | ((unsigned)reader->data[start + 3] << 24u);
-    reader->buffer >>= (reader->bp & 7u);
-  } else {
-    reader->buffer = 0;
-    if(start + 0u < size) reader->buffer |= reader->data[start + 0];
-    if(start + 1u < size) reader->buffer |= ((unsigned)reader->data[start + 1] << 8u);
-    if(start + 2u < size) reader->buffer |= ((unsigned)reader->data[start + 2] << 16u);
-    reader->buffer >>= (reader->bp & 7u);
-  }
-  (void)nbits;
-}
-
-/*See ensureBits documentation above. This one ensures up to 32 bits */
-static LODEPNG_INLINE void ensureBits32(LodePNGBitReader* reader, size_t nbits) {
-  size_t start = reader->bp >> 3u;
-  size_t size = reader->size;
-  if(start + 4u < size) {
-    reader->buffer = (unsigned)reader->data[start + 0] | ((unsigned)reader->data[start + 1] << 8u) |
-                     ((unsigned)reader->data[start + 2] << 16u) | ((unsigned)reader->data[start + 3] << 24u);
-    reader->buffer >>= (reader->bp & 7u);
-    reader->buffer |= (((unsigned)reader->data[start + 4] << 24u) << (8u - (reader->bp & 7u)));
-  } else {
-    reader->buffer = 0;
-    if(start + 0u < size) reader->buffer |= reader->data[start + 0];
-    if(start + 1u < size) reader->buffer |= ((unsigned)reader->data[start + 1] << 8u);
-    if(start + 2u < size) reader->buffer |= ((unsigned)reader->data[start + 2] << 16u);
-    if(start + 3u < size) reader->buffer |= ((unsigned)reader->data[start + 3] << 24u);
-    reader->buffer >>= (reader->bp & 7u);
-  }
-  (void)nbits;
-}
-
-/* Get bits without advancing the bit pointer. Must have enough bits available with ensureBits. Max nbits is 31. */
-static LODEPNG_INLINE unsigned peekBits(LodePNGBitReader* reader, size_t nbits) {
-  /* The shift allows nbits to be only up to 31. */
-  return reader->buffer & ((1u << nbits) - 1u);
-}
-
-/* Must have enough bits available with ensureBits */
-static LODEPNG_INLINE void advanceBits(LodePNGBitReader* reader, size_t nbits) {
-  reader->buffer >>= nbits;
-  reader->bp += nbits;
-}
-
-/* Must have enough bits available with ensureBits */
-static LODEPNG_INLINE unsigned readBits(LodePNGBitReader* reader, size_t nbits) {
-  unsigned result = peekBits(reader, nbits);
-  advanceBits(reader, nbits);
-  return result;
-}
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-static unsigned reverseBits(unsigned bits, unsigned num) {
-  /*TODO: implement faster lookup table based version when needed*/
-  unsigned i, result = 0;
-  for(i = 0; i < num; i++) result |= ((bits >> (num - i - 1u)) & 1u) << i;
-  return result;
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Deflate - Huffman                                                      / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#define FIRST_LENGTH_CODE_INDEX 257
-#define LAST_LENGTH_CODE_INDEX 285
-/*256 literals, the end code, some length codes, and 2 unused codes*/
-#define NUM_DEFLATE_CODE_SYMBOLS 288
-/*the distance codes have their own symbols, 30 used, 2 unused*/
-#define NUM_DISTANCE_SYMBOLS 32
-/*the code length codes. 0-15: code lengths, 16: copy previous 3-6 times, 17: 3-10 zeros, 18: 11-138 zeros*/
-#define NUM_CODE_LENGTH_CODES 19
-
-/*the base lengths represented by codes 257-285*/
-static const unsigned LENGTHBASE[29]
-  = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59,
-     67, 83, 99, 115, 131, 163, 195, 227, 258};
-
-/*the extra bits used by codes 257-285 (added to base length)*/
-static const unsigned LENGTHEXTRA[29]
-  = {0, 0, 0, 0, 0, 0, 0,  0,  1,  1,  1,  1,  2,  2,  2,  2,  3,  3,  3,  3,
-      4,  4,  4,   4,   5,   5,   5,   5,   0};
-
-/*the base backwards distances (the bits of distance codes appear after length codes and use their own huffman tree)*/
-static const unsigned DISTANCEBASE[30]
-  = {1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513,
-     769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
-
-/*the extra bits of backwards distances (added to base)*/
-static const unsigned DISTANCEEXTRA[30]
-  = {0, 0, 0, 0, 1, 1, 2,  2,  3,  3,  4,  4,  5,  5,   6,   6,   7,   7,   8,
-       8,    9,    9,   10,   10,   11,   11,   12,    12,    13,    13};
-
-/*the order in which "code length alphabet code lengths" are stored as specified by deflate, out of this the huffman
-tree of the dynamic huffman tree lengths is generated*/
-static const unsigned CLCL_ORDER[NUM_CODE_LENGTH_CODES]
-  = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*
-Huffman tree struct, containing multiple representations of the tree
-*/
-typedef struct HuffmanTree {
-  unsigned* codes; /*the huffman codes (bit patterns representing the symbols)*/
-  unsigned* lengths; /*the lengths of the huffman codes*/
-  unsigned maxbitlen; /*maximum number of bits a single code can get*/
-  unsigned numcodes; /*number of symbols in the alphabet = number of codes*/
-  /* for reading only */
-  unsigned char* table_len; /*length of symbol from lookup table, or max length if secondary lookup needed*/
-  unsigned short* table_value; /*value of symbol from lookup table, or pointer to secondary table if needed*/
-} HuffmanTree;
-
-static void HuffmanTree_init(HuffmanTree* tree) {
-  tree->codes = 0;
-  tree->lengths = 0;
-  tree->table_len = 0;
-  tree->table_value = 0;
-}
-
-static void HuffmanTree_cleanup(HuffmanTree* tree) {
-  lodepng_free(tree->codes);
-  lodepng_free(tree->lengths);
-  lodepng_free(tree->table_len);
-  lodepng_free(tree->table_value);
-}
-
-/* amount of bits for first huffman table lookup (aka root bits), see HuffmanTree_makeTable and huffmanDecodeSymbol.*/
-/* values 8u and 9u work the fastest */
-#define FIRSTBITS 9u
-
-/* a symbol value too big to represent any valid symbol, to indicate reading disallowed huffman bits combination,
-which is possible in case of only 0 or 1 present symbols. */
-#define INVALIDSYMBOL 65535u
-
-/* make table for huffman decoding */
-static unsigned HuffmanTree_makeTable(HuffmanTree* tree) {
-  static const unsigned headsize = 1u << FIRSTBITS; /*size of the first table*/
-  static const unsigned mask = (1u << FIRSTBITS) /*headsize*/ - 1u;
-  size_t i, numpresent, pointer, size; /*total table size*/
-  unsigned* maxlens = (unsigned*)lodepng_malloc(headsize * sizeof(unsigned));
-  if(!maxlens) return 83; /*alloc fail*/
-
-  /* compute maxlens: max total bit length of symbols sharing prefix in the first table*/
-  lodepng_memset(maxlens, 0, headsize * sizeof(*maxlens));
-  for(i = 0; i < tree->numcodes; i++) {
-    unsigned symbol = tree->codes[i];
-    unsigned l = tree->lengths[i];
-    unsigned index;
-    if(l <= FIRSTBITS) continue; /*symbols that fit in first table don't increase secondary table size*/
-    /*get the FIRSTBITS MSBs, the MSBs of the symbol are encoded first. See later comment about the reversing*/
-    index = reverseBits(symbol >> (l - FIRSTBITS), FIRSTBITS);
-    maxlens[index] = LODEPNG_MAX(maxlens[index], l);
-  }
-  /* compute total table size: size of first table plus all secondary tables for symbols longer than FIRSTBITS */
-  size = headsize;
-  for(i = 0; i < headsize; ++i) {
-    unsigned l = maxlens[i];
-    if(l > FIRSTBITS) size += (1u << (l - FIRSTBITS));
-  }
-  tree->table_len = (unsigned char*)lodepng_malloc(size * sizeof(*tree->table_len));
-  tree->table_value = (unsigned short*)lodepng_malloc(size * sizeof(*tree->table_value));
-  if(!tree->table_len || !tree->table_value) {
-    lodepng_free(maxlens);
-    /* freeing tree->table values is done at a higher scope */
-    return 83; /*alloc fail*/
-  }
-  /*initialize with an invalid length to indicate unused entries*/
-  for(i = 0; i < size; ++i) tree->table_len[i] = 16;
-
-  /*fill in the first table for long symbols: max prefix size and pointer to secondary tables*/
-  pointer = headsize;
-  for(i = 0; i < headsize; ++i) {
-    unsigned l = maxlens[i];
-    if(l <= FIRSTBITS) continue;
-    tree->table_len[i] = l;
-    tree->table_value[i] = pointer;
-    pointer += (1u << (l - FIRSTBITS));
-  }
-  lodepng_free(maxlens);
-
-  /*fill in the first table for short symbols, or secondary table for long symbols*/
-  numpresent = 0;
-  for(i = 0; i < tree->numcodes; ++i) {
-    unsigned l = tree->lengths[i];
-    unsigned symbol, reverse;
-    if(l == 0) continue;
-    symbol = tree->codes[i]; /*the huffman bit pattern. i itself is the value.*/
-    /*reverse bits, because the huffman bits are given in MSB first order but the bit reader reads LSB first*/
-    reverse = reverseBits(symbol, l);
-    numpresent++;
-
-    if(l <= FIRSTBITS) {
-      /*short symbol, fully in first table, replicated num times if l < FIRSTBITS*/
-      unsigned num = 1u << (FIRSTBITS - l);
-      unsigned j;
-      for(j = 0; j < num; ++j) {
-        /*bit reader will read the l bits of symbol first, the remaining FIRSTBITS - l bits go to the MSB's*/
-        unsigned index = reverse | (j << l);
-        if(tree->table_len[index] != 16) return 55; /*invalid tree: long symbol shares prefix with short symbol*/
-        tree->table_len[index] = l;
-        tree->table_value[index] = i;
-      }
-    } else {
-      /*long symbol, shares prefix with other long symbols in first lookup table, needs second lookup*/
-      /*the FIRSTBITS MSBs of the symbol are the first table index*/
-      unsigned index = reverse & mask;
-      unsigned maxlen = tree->table_len[index];
-      /*log2 of secondary table length, should be >= l - FIRSTBITS*/
-      unsigned tablelen = maxlen - FIRSTBITS;
-      unsigned start = tree->table_value[index]; /*starting index in secondary table*/
-      unsigned num = 1u << (tablelen - (l - FIRSTBITS)); /*amount of entries of this symbol in secondary table*/
-      unsigned j;
-      if(maxlen < l) return 55; /*invalid tree: long symbol shares prefix with short symbol*/
-      for(j = 0; j < num; ++j) {
-        unsigned reverse2 = reverse >> FIRSTBITS; /* l - FIRSTBITS bits */
-        unsigned index2 = start + (reverse2 | (j << (l - FIRSTBITS)));
-        tree->table_len[index2] = l;
-        tree->table_value[index2] = i;
-      }
-    }
-  }
-
-  if(numpresent < 2) {
-    /* In case of exactly 1 symbol, in theory the huffman symbol needs 0 bits,
-    but deflate uses 1 bit instead. In case of 0 symbols, no symbols can
-    appear at all, but such huffman tree could still exist (e.g. if distance
-    codes are never used). In both cases, not all symbols of the table will be
-    filled in. Fill them in with an invalid symbol value so returning them from
-    huffmanDecodeSymbol will cause error. */
-    for(i = 0; i < size; ++i) {
-      if(tree->table_len[i] == 16) {
-        /* As length, use a value smaller than FIRSTBITS for the head table,
-        and a value larger than FIRSTBITS for the secondary table, to ensure
-        valid behavior for advanceBits when reading this symbol. */
-        tree->table_len[i] = (i < headsize) ? 1 : (FIRSTBITS + 1);
-        tree->table_value[i] = INVALIDSYMBOL;
-      }
-    }
-  } else {
-    /* A good huffman tree has N * 2 - 1 nodes, of which N - 1 are internal nodes.
-    If that is not the case (due to too long length codes), the table will not
-    have been fully used, and this is an error (not all bit combinations can be
-    decoded): an oversubscribed huffman tree, indicated by error 55. */
-    for(i = 0; i < size; ++i) {
-      if(tree->table_len[i] == 16) return 55;
-    }
-  }
-
-  return 0;
-}
-
-/*
-Second step for the ...makeFromLengths and ...makeFromFrequencies functions.
-numcodes, lengths and maxbitlen must already be filled in correctly. return
-value is error.
-*/
-static unsigned HuffmanTree_makeFromLengths2(HuffmanTree* tree) {
-  unsigned* blcount;
-  unsigned* nextcode;
-  unsigned error = 0;
-  unsigned bits, n;
-
-  tree->codes = (unsigned*)lodepng_malloc(tree->numcodes * sizeof(unsigned));
-  blcount = (unsigned*)lodepng_malloc((tree->maxbitlen + 1) * sizeof(unsigned));
-  nextcode = (unsigned*)lodepng_malloc((tree->maxbitlen + 1) * sizeof(unsigned));
-  if(!tree->codes || !blcount || !nextcode) error = 83; /*alloc fail*/
-
-  if(!error) {
-    for(n = 0; n != tree->maxbitlen + 1; n++) blcount[n] = nextcode[n] = 0;
-    /*step 1: count number of instances of each code length*/
-    for(bits = 0; bits != tree->numcodes; ++bits) ++blcount[tree->lengths[bits]];
-    /*step 2: generate the nextcode values*/
-    for(bits = 1; bits <= tree->maxbitlen; ++bits) {
-      nextcode[bits] = (nextcode[bits - 1] + blcount[bits - 1]) << 1u;
-    }
-    /*step 3: generate all the codes*/
-    for(n = 0; n != tree->numcodes; ++n) {
-      if(tree->lengths[n] != 0) {
-        tree->codes[n] = nextcode[tree->lengths[n]]++;
-        /*remove superfluous bits from the code*/
-        tree->codes[n] &= ((1u << tree->lengths[n]) - 1u);
-      }
-    }
-  }
-
-  lodepng_free(blcount);
-  lodepng_free(nextcode);
-
-  if(!error) error = HuffmanTree_makeTable(tree);
-  return error;
-}
-
-/*
-given the code lengths (as stored in the PNG file), generate the tree as defined
-by Deflate. maxbitlen is the maximum bits that a code in the tree can have.
-return value is error.
-*/
-static unsigned HuffmanTree_makeFromLengths(HuffmanTree* tree, const unsigned* bitlen,
-                                            size_t numcodes, unsigned maxbitlen) {
-  unsigned i;
-  tree->lengths = (unsigned*)lodepng_malloc(numcodes * sizeof(unsigned));
-  if(!tree->lengths) return 83; /*alloc fail*/
-  for(i = 0; i != numcodes; ++i) tree->lengths[i] = bitlen[i];
-  tree->numcodes = (unsigned)numcodes; /*number of symbols*/
-  tree->maxbitlen = maxbitlen;
-  return HuffmanTree_makeFromLengths2(tree);
-}
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-/*BPM: Boundary Package Merge, see "A Fast and Space-Economical Algorithm for Length-Limited Coding",
-Jyrki Katajainen, Alistair Moffat, Andrew Turpin, 1995.*/
-
-/*chain node for boundary package merge*/
-typedef struct BPMNode {
-  int weight; /*the sum of all weights in this chain*/
-  unsigned index; /*index of this leaf node (called "count" in the paper)*/
-  struct BPMNode* tail; /*the next nodes in this chain (null if last)*/
-  int in_use;
-} BPMNode;
-
-/*lists of chains*/
-typedef struct BPMLists {
-  /*memory pool*/
-  unsigned memsize;
-  BPMNode* memory;
-  unsigned numfree;
-  unsigned nextfree;
-  BPMNode** freelist;
-  /*two heads of lookahead chains per list*/
-  unsigned listsize;
-  BPMNode** chains0;
-  BPMNode** chains1;
-} BPMLists;
-
-/*creates a new chain node with the given parameters, from the memory in the lists */
-static BPMNode* bpmnode_create(BPMLists* lists, int weight, unsigned index, BPMNode* tail) {
-  unsigned i;
-  BPMNode* result;
-
-  /*memory full, so garbage collect*/
-  if(lists->nextfree >= lists->numfree) {
-    /*mark only those that are in use*/
-    for(i = 0; i != lists->memsize; ++i) lists->memory[i].in_use = 0;
-    for(i = 0; i != lists->listsize; ++i) {
-      BPMNode* node;
-      for(node = lists->chains0[i]; node != 0; node = node->tail) node->in_use = 1;
-      for(node = lists->chains1[i]; node != 0; node = node->tail) node->in_use = 1;
-    }
-    /*collect those that are free*/
-    lists->numfree = 0;
-    for(i = 0; i != lists->memsize; ++i) {
-      if(!lists->memory[i].in_use) lists->freelist[lists->numfree++] = &lists->memory[i];
-    }
-    lists->nextfree = 0;
-  }
-
-  result = lists->freelist[lists->nextfree++];
-  result->weight = weight;
-  result->index = index;
-  result->tail = tail;
-  return result;
-}
-
-/*sort the leaves with stable mergesort*/
-static void bpmnode_sort(BPMNode* leaves, size_t num) {
-  BPMNode* mem = (BPMNode*)lodepng_malloc(sizeof(*leaves) * num);
-  size_t width, counter = 0;
-  for(width = 1; width < num; width *= 2) {
-    BPMNode* a = (counter & 1) ? mem : leaves;
-    BPMNode* b = (counter & 1) ? leaves : mem;
-    size_t p;
-    for(p = 0; p < num; p += 2 * width) {
-      size_t q = (p + width > num) ? num : (p + width);
-      size_t r = (p + 2 * width > num) ? num : (p + 2 * width);
-      size_t i = p, j = q, k;
-      for(k = p; k < r; k++) {
-        if(i < q && (j >= r || a[i].weight <= a[j].weight)) b[k] = a[i++];
-        else b[k] = a[j++];
-      }
-    }
-    counter++;
-  }
-  if(counter & 1) lodepng_memcpy(leaves, mem, sizeof(*leaves) * num);
-  lodepng_free(mem);
-}
-
-/*Boundary Package Merge step, numpresent is the amount of leaves, and c is the current chain.*/
-static void boundaryPM(BPMLists* lists, BPMNode* leaves, size_t numpresent, int c, int num) {
-  unsigned lastindex = lists->chains1[c]->index;
-
-  if(c == 0) {
-    if(lastindex >= numpresent) return;
-    lists->chains0[c] = lists->chains1[c];
-    lists->chains1[c] = bpmnode_create(lists, leaves[lastindex].weight, lastindex + 1, 0);
-  } else {
-    /*sum of the weights of the head nodes of the previous lookahead chains.*/
-    int sum = lists->chains0[c - 1]->weight + lists->chains1[c - 1]->weight;
-    lists->chains0[c] = lists->chains1[c];
-    if(lastindex < numpresent && sum > leaves[lastindex].weight) {
-      lists->chains1[c] = bpmnode_create(lists, leaves[lastindex].weight, lastindex + 1, lists->chains1[c]->tail);
-      return;
-    }
-    lists->chains1[c] = bpmnode_create(lists, sum, lastindex, lists->chains1[c - 1]);
-    /*in the end we are only interested in the chain of the last list, so no
-    need to recurse if we're at the last one (this gives measurable speedup)*/
-    if(num + 1 < (int)(2 * numpresent - 2)) {
-      boundaryPM(lists, leaves, numpresent, c - 1, num);
-      boundaryPM(lists, leaves, numpresent, c - 1, num);
-    }
-  }
-}
-
-unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies,
-                                      size_t numcodes, unsigned maxbitlen) {
-  unsigned error = 0;
-  unsigned i;
-  size_t numpresent = 0; /*number of symbols with non-zero frequency*/
-  BPMNode* leaves; /*the symbols, only those with > 0 frequency*/
-
-  if(numcodes == 0) return 80; /*error: a tree of 0 symbols is not supposed to be made*/
-  if((1u << maxbitlen) < (unsigned)numcodes) return 80; /*error: represent all symbols*/
-
-  leaves = (BPMNode*)lodepng_malloc(numcodes * sizeof(*leaves));
-  if(!leaves) return 83; /*alloc fail*/
-
-  for(i = 0; i != numcodes; ++i) {
-    if(frequencies[i] > 0) {
-      leaves[numpresent].weight = (int)frequencies[i];
-      leaves[numpresent].index = i;
-      ++numpresent;
-    }
-  }
-
-  lodepng_memset(lengths, 0, numcodes * sizeof(*lengths));
-
-  /*ensure at least two present symbols. There should be at least one symbol
-  according to RFC 1951 section 3.2.7. Some decoders incorrectly require two. To
-  make these work as well ensure there are at least two symbols. The
-  Package-Merge code below also doesn't work correctly if there's only one
-  symbol, it'd give it the theoretical 0 bits but in practice zlib wants 1 bit*/
-  if(numpresent == 0) {
-    lengths[0] = lengths[1] = 1; /*note that for RFC 1951 section 3.2.7, only lengths[0] = 1 is needed*/
-  } else if(numpresent == 1) {
-    lengths[leaves[0].index] = 1;
-    lengths[leaves[0].index == 0 ? 1 : 0] = 1;
-  } else {
-    BPMLists lists;
-    BPMNode* node;
-
-    bpmnode_sort(leaves, numpresent);
-
-    lists.listsize = maxbitlen;
-    lists.memsize = 2 * maxbitlen * (maxbitlen + 1);
-    lists.nextfree = 0;
-    lists.numfree = lists.memsize;
-    lists.memory = (BPMNode*)lodepng_malloc(lists.memsize * sizeof(*lists.memory));
-    lists.freelist = (BPMNode**)lodepng_malloc(lists.memsize * sizeof(BPMNode*));
-    lists.chains0 = (BPMNode**)lodepng_malloc(lists.listsize * sizeof(BPMNode*));
-    lists.chains1 = (BPMNode**)lodepng_malloc(lists.listsize * sizeof(BPMNode*));
-    if(!lists.memory || !lists.freelist || !lists.chains0 || !lists.chains1) error = 83; /*alloc fail*/
-
-    if(!error) {
-      for(i = 0; i != lists.memsize; ++i) lists.freelist[i] = &lists.memory[i];
-
-      bpmnode_create(&lists, leaves[0].weight, 1, 0);
-      bpmnode_create(&lists, leaves[1].weight, 2, 0);
-
-      for(i = 0; i != lists.listsize; ++i) {
-        lists.chains0[i] = &lists.memory[0];
-        lists.chains1[i] = &lists.memory[1];
-      }
-
-      /*each boundaryPM call adds one chain to the last list, and we need 2 * numpresent - 2 chains.*/
-      for(i = 2; i != 2 * numpresent - 2; ++i) boundaryPM(&lists, leaves, numpresent, (int)maxbitlen - 1, (int)i);
-
-      for(node = lists.chains1[maxbitlen - 1]; node; node = node->tail) {
-        for(i = 0; i != node->index; ++i) ++lengths[leaves[i].index];
-      }
-    }
-
-    lodepng_free(lists.memory);
-    lodepng_free(lists.freelist);
-    lodepng_free(lists.chains0);
-    lodepng_free(lists.chains1);
-  }
-
-  lodepng_free(leaves);
-  return error;
-}
-
-/*Create the Huffman tree given the symbol frequencies*/
-static unsigned HuffmanTree_makeFromFrequencies(HuffmanTree* tree, const unsigned* frequencies,
-                                                size_t mincodes, size_t numcodes, unsigned maxbitlen) {
-  unsigned error = 0;
-  while(!frequencies[numcodes - 1] && numcodes > mincodes) --numcodes; /*trim zeroes*/
-  tree->lengths = (unsigned*)lodepng_malloc(numcodes * sizeof(unsigned));
-  if(!tree->lengths) return 83; /*alloc fail*/
-  tree->maxbitlen = maxbitlen;
-  tree->numcodes = (unsigned)numcodes; /*number of symbols*/
-
-  error = lodepng_huffman_code_lengths(tree->lengths, frequencies, numcodes, maxbitlen);
-  if(!error) error = HuffmanTree_makeFromLengths2(tree);
-  return error;
-}
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-/*get the literal and length code tree of a deflated block with fixed tree, as per the deflate specification*/
-static unsigned generateFixedLitLenTree(HuffmanTree* tree) {
-  unsigned i, error = 0;
-  unsigned* bitlen = (unsigned*)lodepng_malloc(NUM_DEFLATE_CODE_SYMBOLS * sizeof(unsigned));
-  if(!bitlen) return 83; /*alloc fail*/
-
-  /*288 possible codes: 0-255=literals, 256=endcode, 257-285=lengthcodes, 286-287=unused*/
-  for(i =   0; i <= 143; ++i) bitlen[i] = 8;
-  for(i = 144; i <= 255; ++i) bitlen[i] = 9;
-  for(i = 256; i <= 279; ++i) bitlen[i] = 7;
-  for(i = 280; i <= 287; ++i) bitlen[i] = 8;
-
-  error = HuffmanTree_makeFromLengths(tree, bitlen, NUM_DEFLATE_CODE_SYMBOLS, 15);
-
-  lodepng_free(bitlen);
-  return error;
-}
-
-/*get the distance code tree of a deflated block with fixed tree, as specified in the deflate specification*/
-static unsigned generateFixedDistanceTree(HuffmanTree* tree) {
-  unsigned i, error = 0;
-  unsigned* bitlen = (unsigned*)lodepng_malloc(NUM_DISTANCE_SYMBOLS * sizeof(unsigned));
-  if(!bitlen) return 83; /*alloc fail*/
-
-  /*there are 32 distance codes, but 30-31 are unused*/
-  for(i = 0; i != NUM_DISTANCE_SYMBOLS; ++i) bitlen[i] = 5;
-  error = HuffmanTree_makeFromLengths(tree, bitlen, NUM_DISTANCE_SYMBOLS, 15);
-
-  lodepng_free(bitlen);
-  return error;
-}
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-/*
-returns the code. The bit reader must already have been ensured at least 15 bits
-*/
-static unsigned huffmanDecodeSymbol(LodePNGBitReader* reader, const HuffmanTree* codetree) {
-  unsigned short code = peekBits(reader, FIRSTBITS);
-  unsigned short l = codetree->table_len[code];
-  unsigned short value = codetree->table_value[code];
-  if(l <= FIRSTBITS) {
-    advanceBits(reader, l);
-    return value;
-  } else {
-    advanceBits(reader, FIRSTBITS);
-    value += peekBits(reader, l - FIRSTBITS);
-    advanceBits(reader, codetree->table_len[value] - FIRSTBITS);
-    return codetree->table_value[value];
-  }
-}
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Inflator (Decompressor)                                                / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*get the tree of a deflated block with fixed tree, as specified in the deflate specification
-Returns error code.*/
-static unsigned getTreeInflateFixed(HuffmanTree* tree_ll, HuffmanTree* tree_d) {
-  unsigned error = generateFixedLitLenTree(tree_ll);
-  if(error) return error;
-  return generateFixedDistanceTree(tree_d);
-}
-
-/*get the tree of a deflated block with dynamic tree, the tree itself is also Huffman compressed with a known tree*/
-static unsigned getTreeInflateDynamic(HuffmanTree* tree_ll, HuffmanTree* tree_d,
-                                      LodePNGBitReader* reader) {
-  /*make sure that length values that aren't filled in will be 0, or a wrong tree will be generated*/
-  unsigned error = 0;
-  unsigned n, HLIT, HDIST, HCLEN, i;
-
-  /*see comments in deflateDynamic for explanation of the context and these variables, it is analogous*/
-  unsigned* bitlen_ll = 0; /*lit,len code lengths*/
-  unsigned* bitlen_d = 0; /*dist code lengths*/
-  /*code length code lengths ("clcl"), the bit lengths of the huffman tree used to compress bitlen_ll and bitlen_d*/
-  unsigned* bitlen_cl = 0;
-  HuffmanTree tree_cl; /*the code tree for code length codes (the huffman tree for compressed huffman trees)*/
-
-  if(reader->bitsize - reader->bp < 14) return 49; /*error: the bit pointer is or will go past the memory*/
-  ensureBits17(reader, 14);
-
-  /*number of literal/length codes + 257. Unlike the spec, the value 257 is added to it here already*/
-  HLIT =  readBits(reader, 5) + 257;
-  /*number of distance codes. Unlike the spec, the value 1 is added to it here already*/
-  HDIST = readBits(reader, 5) + 1;
-  /*number of code length codes. Unlike the spec, the value 4 is added to it here already*/
-  HCLEN = readBits(reader, 4) + 4;
-
-  bitlen_cl = (unsigned*)lodepng_malloc(NUM_CODE_LENGTH_CODES * sizeof(unsigned));
-  if(!bitlen_cl) return 83 /*alloc fail*/;
-
-  HuffmanTree_init(&tree_cl);
-
-  while(!error) {
-    /*read the code length codes out of 3 * (amount of code length codes) bits*/
-    if(lodepng_gtofl(reader->bp, HCLEN * 3, reader->bitsize)) {
-      ERROR_BREAK(50); /*error: the bit pointer is or will go past the memory*/
-    }
-    for(i = 0; i != HCLEN; ++i) {
-      ensureBits9(reader, 3); /*out of bounds already checked above */
-      bitlen_cl[CLCL_ORDER[i]] = readBits(reader, 3);
-    }
-    for(i = HCLEN; i != NUM_CODE_LENGTH_CODES; ++i) {
-      bitlen_cl[CLCL_ORDER[i]] = 0;
-    }
-
-    error = HuffmanTree_makeFromLengths(&tree_cl, bitlen_cl, NUM_CODE_LENGTH_CODES, 7);
-    if(error) break;
-
-    /*now we can use this tree to read the lengths for the tree that this function will return*/
-    bitlen_ll = (unsigned*)lodepng_malloc(NUM_DEFLATE_CODE_SYMBOLS * sizeof(unsigned));
-    bitlen_d = (unsigned*)lodepng_malloc(NUM_DISTANCE_SYMBOLS * sizeof(unsigned));
-    if(!bitlen_ll || !bitlen_d) ERROR_BREAK(83 /*alloc fail*/);
-    lodepng_memset(bitlen_ll, 0, NUM_DEFLATE_CODE_SYMBOLS * sizeof(*bitlen_ll));
-    lodepng_memset(bitlen_d, 0, NUM_DISTANCE_SYMBOLS * sizeof(*bitlen_d));
-
-    /*i is the current symbol we're reading in the part that contains the code lengths of lit/len and dist codes*/
-    i = 0;
-    while(i < HLIT + HDIST) {
-      unsigned code;
-      ensureBits25(reader, 22); /* up to 15 bits for huffman code, up to 7 extra bits below*/
-      code = huffmanDecodeSymbol(reader, &tree_cl);
-      if(code <= 15) /*a length code*/ {
-        if(i < HLIT) bitlen_ll[i] = code;
-        else bitlen_d[i - HLIT] = code;
-        ++i;
-      } else if(code == 16) /*repeat previous*/ {
-        unsigned replength = 3; /*read in the 2 bits that indicate repeat length (3-6)*/
-        unsigned value; /*set value to the previous code*/
-
-        if(i == 0) ERROR_BREAK(54); /*can't repeat previous if i is 0*/
-
-        replength += readBits(reader, 2);
-
-        if(i < HLIT + 1) value = bitlen_ll[i - 1];
-        else value = bitlen_d[i - HLIT - 1];
-        /*repeat this value in the next lengths*/
-        for(n = 0; n < replength; ++n) {
-          if(i >= HLIT + HDIST) ERROR_BREAK(13); /*error: i is larger than the amount of codes*/
-          if(i < HLIT) bitlen_ll[i] = value;
-          else bitlen_d[i - HLIT] = value;
-          ++i;
-        }
-      } else if(code == 17) /*repeat "0" 3-10 times*/ {
-        unsigned replength = 3; /*read in the bits that indicate repeat length*/
-        replength += readBits(reader, 3);
-
-        /*repeat this value in the next lengths*/
-        for(n = 0; n < replength; ++n) {
-          if(i >= HLIT + HDIST) ERROR_BREAK(14); /*error: i is larger than the amount of codes*/
-
-          if(i < HLIT) bitlen_ll[i] = 0;
-          else bitlen_d[i - HLIT] = 0;
-          ++i;
-        }
-      } else if(code == 18) /*repeat "0" 11-138 times*/ {
-        unsigned replength = 11; /*read in the bits that indicate repeat length*/
-        replength += readBits(reader, 7);
-
-        /*repeat this value in the next lengths*/
-        for(n = 0; n < replength; ++n) {
-          if(i >= HLIT + HDIST) ERROR_BREAK(15); /*error: i is larger than the amount of codes*/
-
-          if(i < HLIT) bitlen_ll[i] = 0;
-          else bitlen_d[i - HLIT] = 0;
-          ++i;
-        }
-      } else /*if(code == INVALIDSYMBOL)*/ {
-        ERROR_BREAK(16); /*error: tried to read disallowed huffman symbol*/
-      }
-      /*check if any of the ensureBits above went out of bounds*/
-      if(reader->bp > reader->bitsize) {
-        /*return error code 10 or 11 depending on the situation that happened in huffmanDecodeSymbol
-        (10=no endcode, 11=wrong jump outside of tree)*/
-        /* TODO: revise error codes 10,11,50: the above comment is no longer valid */
-        ERROR_BREAK(50); /*error, bit pointer jumps past memory*/
-      }
-    }
-    if(error) break;
-
-    if(bitlen_ll[256] == 0) ERROR_BREAK(64); /*the length of the end code 256 must be larger than 0*/
-
-    /*now we've finally got HLIT and HDIST, so generate the code trees, and the function is done*/
-    error = HuffmanTree_makeFromLengths(tree_ll, bitlen_ll, NUM_DEFLATE_CODE_SYMBOLS, 15);
-    if(error) break;
-    error = HuffmanTree_makeFromLengths(tree_d, bitlen_d, NUM_DISTANCE_SYMBOLS, 15);
-
-    break; /*end of error-while*/
-  }
-
-  lodepng_free(bitlen_cl);
-  lodepng_free(bitlen_ll);
-  lodepng_free(bitlen_d);
-  HuffmanTree_cleanup(&tree_cl);
-
-  return error;
-}
-
-/*inflate a block with dynamic of fixed Huffman tree. btype must be 1 or 2.*/
-static unsigned inflateHuffmanBlock(ucvector* out, LodePNGBitReader* reader,
-                                    unsigned btype, size_t max_output_size) {
-  unsigned error = 0;
-  HuffmanTree tree_ll; /*the huffman tree for literal and length codes*/
-  HuffmanTree tree_d; /*the huffman tree for distance codes*/
-  const size_t reserved_size = 260; /* must be at least 258 for max length, and a few extra for adding a few extra literals */
-  int done = 0;
-
-  if(!ucvector_reserve(out, out->size + reserved_size)) return 83; /*alloc fail*/
-
-  HuffmanTree_init(&tree_ll);
-  HuffmanTree_init(&tree_d);
-
-  if(btype == 1) error = getTreeInflateFixed(&tree_ll, &tree_d);
-  else /*if(btype == 2)*/ error = getTreeInflateDynamic(&tree_ll, &tree_d, reader);
-
-
-  while(!error && !done) /*decode all symbols until end reached, breaks at end code*/ {
-    /*code_ll is literal, length or end code*/
-    unsigned code_ll;
-    /* ensure enough bits for 2 huffman code reads (15 bits each): if the first is a literal, a second literal is read at once. This
-    appears to be slightly faster, than ensuring 20 bits here for 1 huffman symbol and the potential 5 extra bits for the length symbol.*/
-    ensureBits32(reader, 30);
-    code_ll = huffmanDecodeSymbol(reader, &tree_ll);
-    if(code_ll <= 255) {
-      /*slightly faster code path if multiple literals in a row*/
-      out->data[out->size++] = (unsigned char)code_ll;
-      code_ll = huffmanDecodeSymbol(reader, &tree_ll);
-    }
-    if(code_ll <= 255) /*literal symbol*/ {
-      out->data[out->size++] = (unsigned char)code_ll;
-    } else if(code_ll >= FIRST_LENGTH_CODE_INDEX && code_ll <= LAST_LENGTH_CODE_INDEX) /*length code*/ {
-      unsigned code_d, distance;
-      unsigned numextrabits_l, numextrabits_d; /*extra bits for length and distance*/
-      size_t start, backward, length;
-
-      /*part 1: get length base*/
-      length = LENGTHBASE[code_ll - FIRST_LENGTH_CODE_INDEX];
-
-      /*part 2: get extra bits and add the value of that to length*/
-      numextrabits_l = LENGTHEXTRA[code_ll - FIRST_LENGTH_CODE_INDEX];
-      if(numextrabits_l != 0) {
-        /* bits already ensured above */
-        ensureBits25(reader, 5);
-        length += readBits(reader, numextrabits_l);
-      }
-
-      /*part 3: get distance code*/
-      ensureBits32(reader, 28); /* up to 15 for the huffman symbol, up to 13 for the extra bits */
-      code_d = huffmanDecodeSymbol(reader, &tree_d);
-      if(code_d > 29) {
-        if(code_d <= 31) {
-          ERROR_BREAK(18); /*error: invalid distance code (30-31 are never used)*/
-        } else /* if(code_d == INVALIDSYMBOL) */{
-          ERROR_BREAK(16); /*error: tried to read disallowed huffman symbol*/
-        }
-      }
-      distance = DISTANCEBASE[code_d];
-
-      /*part 4: get extra bits from distance*/
-      numextrabits_d = DISTANCEEXTRA[code_d];
-      if(numextrabits_d != 0) {
-        /* bits already ensured above */
-        distance += readBits(reader, numextrabits_d);
-      }
-
-      /*part 5: fill in all the out[n] values based on the length and dist*/
-      start = out->size;
-      if(distance > start) ERROR_BREAK(52); /*too long backward distance*/
-      backward = start - distance;
-
-      out->size += length;
-      if(distance < length) {
-        size_t forward;
-        lodepng_memcpy(out->data + start, out->data + backward, distance);
-        start += distance;
-        for(forward = distance; forward < length; ++forward) {
-          out->data[start++] = out->data[backward++];
-        }
-      } else {
-        lodepng_memcpy(out->data + start, out->data + backward, length);
-      }
-    } else if(code_ll == 256) {
-      done = 1; /*end code, finish the loop*/
-    } else /*if(code_ll == INVALIDSYMBOL)*/ {
-      ERROR_BREAK(16); /*error: tried to read disallowed huffman symbol*/
-    }
-    if(out->allocsize - out->size < reserved_size) {
-      if(!ucvector_reserve(out, out->size + reserved_size)) ERROR_BREAK(83); /*alloc fail*/
-    }
-    /*check if any of the ensureBits above went out of bounds*/
-    if(reader->bp > reader->bitsize) {
-      /*return error code 10 or 11 depending on the situation that happened in huffmanDecodeSymbol
-      (10=no endcode, 11=wrong jump outside of tree)*/
-      /* TODO: revise error codes 10,11,50: the above comment is no longer valid */
-      ERROR_BREAK(51); /*error, bit pointer jumps past memory*/
-    }
-    if(max_output_size && out->size > max_output_size) {
-      ERROR_BREAK(109); /*error, larger than max size*/
-    }
-  }
-
-  HuffmanTree_cleanup(&tree_ll);
-  HuffmanTree_cleanup(&tree_d);
-
-  return error;
-}
-
-static unsigned inflateNoCompression(ucvector* out, LodePNGBitReader* reader,
-                                     const LodePNGDecompressSettings* settings) {
-  size_t bytepos;
-  size_t size = reader->size;
-  unsigned LEN, NLEN, error = 0;
-
-  /*go to first boundary of byte*/
-  bytepos = (reader->bp + 7u) >> 3u;
-
-  /*read LEN (2 bytes) and NLEN (2 bytes)*/
-  if(bytepos + 4 >= size) return 52; /*error, bit pointer will jump past memory*/
-  LEN = (unsigned)reader->data[bytepos] + ((unsigned)reader->data[bytepos + 1] << 8u); bytepos += 2;
-  NLEN = (unsigned)reader->data[bytepos] + ((unsigned)reader->data[bytepos + 1] << 8u); bytepos += 2;
-
-  /*check if 16-bit NLEN is really the one's complement of LEN*/
-  if(!settings->ignore_nlen && LEN + NLEN != 65535) {
-    return 21; /*error: NLEN is not one's complement of LEN*/
-  }
-
-  if(!ucvector_resize(out, out->size + LEN)) return 83; /*alloc fail*/
-
-  /*read the literal data: LEN bytes are now stored in the out buffer*/
-  if(bytepos + LEN > size) return 23; /*error: reading outside of in buffer*/
-
-  /*out->data can be NULL (when LEN is zero), and arithmetics on NULL ptr is undefined*/
-  if (LEN) {
-    lodepng_memcpy(out->data + out->size - LEN, reader->data + bytepos, LEN);
-    bytepos += LEN;
-  }
-
-  reader->bp = bytepos << 3u;
-
-  return error;
-}
-
-static unsigned lodepng_inflatev(ucvector* out,
-                                 const unsigned char* in, size_t insize,
-                                 const LodePNGDecompressSettings* settings) {
-  unsigned BFINAL = 0;
-  LodePNGBitReader reader;
-  unsigned error = LodePNGBitReader_init(&reader, in, insize);
-
-  if(error) return error;
-
-  while(!BFINAL) {
-    unsigned BTYPE;
-    if(reader.bitsize - reader.bp < 3) return 52; /*error, bit pointer will jump past memory*/
-    ensureBits9(&reader, 3);
-    BFINAL = readBits(&reader, 1);
-    BTYPE = readBits(&reader, 2);
-
-    if(BTYPE == 3) return 20; /*error: invalid BTYPE*/
-    else if(BTYPE == 0) error = inflateNoCompression(out, &reader, settings); /*no compression*/
-    else error = inflateHuffmanBlock(out, &reader, BTYPE, settings->max_output_size); /*compression, BTYPE 01 or 10*/
-    if(!error && settings->max_output_size && out->size > settings->max_output_size) error = 109;
-    if(error) break;
-  }
-
-  return error;
-}
-
-unsigned lodepng_inflate(unsigned char** out, size_t* outsize,
-                         const unsigned char* in, size_t insize,
-                         const LodePNGDecompressSettings* settings) {
-  ucvector v = ucvector_init(*out, *outsize);
-  unsigned error = lodepng_inflatev(&v, in, insize, settings);
-  *out = v.data;
-  *outsize = v.size;
-  return error;
-}
-
-static unsigned inflatev(ucvector* out, const unsigned char* in, size_t insize,
-                        const LodePNGDecompressSettings* settings) {
-  if(settings->custom_inflate) {
-    unsigned error = settings->custom_inflate(&out->data, &out->size, in, insize, settings);
-    out->allocsize = out->size;
-    if(error) {
-      /*the custom inflate is allowed to have its own error codes, however, we translate it to code 110*/
-      error = 110;
-      /*if there's a max output size, and the custom zlib returned error, then indicate that error instead*/
-      if(settings->max_output_size && out->size > settings->max_output_size) error = 109;
-    }
-    return error;
-  } else {
-    return lodepng_inflatev(out, in, insize, settings);
-  }
-}
-
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Deflator (Compressor)                                                  / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-static const size_t MAX_SUPPORTED_DEFLATE_LENGTH = 258;
-
-/*search the index in the array, that has the largest value smaller than or equal to the given value,
-given array must be sorted (if no value is smaller, it returns the size of the given array)*/
-static size_t searchCodeIndex(const unsigned* array, size_t array_size, size_t value) {
-  /*binary search (only small gain over linear). TODO: use CPU log2 instruction for getting symbols instead*/
-  size_t left = 1;
-  size_t right = array_size - 1;
-
-  while(left <= right) {
-    size_t mid = (left + right) >> 1;
-    if(array[mid] >= value) right = mid - 1;
-    else left = mid + 1;
-  }
-  if(left >= array_size || array[left] > value) left--;
-  return left;
-}
-
-static void addLengthDistance(uivector* values, size_t length, size_t distance) {
-  /*values in encoded vector are those used by deflate:
-  0-255: literal bytes
-  256: end
-  257-285: length/distance pair (length code, followed by extra length bits, distance code, extra distance bits)
-  286-287: invalid*/
-
-  unsigned length_code = (unsigned)searchCodeIndex(LENGTHBASE, 29, length);
-  unsigned extra_length = (unsigned)(length - LENGTHBASE[length_code]);
-  unsigned dist_code = (unsigned)searchCodeIndex(DISTANCEBASE, 30, distance);
-  unsigned extra_distance = (unsigned)(distance - DISTANCEBASE[dist_code]);
-
-  size_t pos = values->size;
-  /*TODO: return error when this fails (out of memory)*/
-  unsigned ok = uivector_resize(values, values->size + 4);
-  if(ok) {
-    values->data[pos + 0] = length_code + FIRST_LENGTH_CODE_INDEX;
-    values->data[pos + 1] = extra_length;
-    values->data[pos + 2] = dist_code;
-    values->data[pos + 3] = extra_distance;
-  }
-}
-
-/*3 bytes of data get encoded into two bytes. The hash cannot use more than 3
-bytes as input because 3 is the minimum match length for deflate*/
-static const unsigned HASH_NUM_VALUES = 65536;
-static const unsigned HASH_BIT_MASK = 65535; /*HASH_NUM_VALUES - 1, but C90 does not like that as initializer*/
-
-typedef struct Hash {
-  int* head; /*hash value to head circular pos - can be outdated if went around window*/
-  /*circular pos to prev circular pos*/
-  unsigned short* chain;
-  int* val; /*circular pos to hash value*/
-
-  /*TODO: do this not only for zeros but for any repeated byte. However for PNG
-  it's always going to be the zeros that dominate, so not important for PNG*/
-  int* headz; /*similar to head, but for chainz*/
-  unsigned short* chainz; /*those with same amount of zeros*/
-  unsigned short* zeros; /*length of zeros streak, used as a second hash chain*/
-} Hash;
-
-static unsigned hash_init(Hash* hash, unsigned windowsize) {
-  unsigned i;
-  hash->head = (int*)lodepng_malloc(sizeof(int) * HASH_NUM_VALUES);
-  hash->val = (int*)lodepng_malloc(sizeof(int) * windowsize);
-  hash->chain = (unsigned short*)lodepng_malloc(sizeof(unsigned short) * windowsize);
-
-  hash->zeros = (unsigned short*)lodepng_malloc(sizeof(unsigned short) * windowsize);
-  hash->headz = (int*)lodepng_malloc(sizeof(int) * (MAX_SUPPORTED_DEFLATE_LENGTH + 1));
-  hash->chainz = (unsigned short*)lodepng_malloc(sizeof(unsigned short) * windowsize);
-
-  if(!hash->head || !hash->chain || !hash->val  || !hash->headz|| !hash->chainz || !hash->zeros) {
-    return 83; /*alloc fail*/
-  }
-
-  /*initialize hash table*/
-  for(i = 0; i != HASH_NUM_VALUES; ++i) hash->head[i] = -1;
-  for(i = 0; i != windowsize; ++i) hash->val[i] = -1;
-  for(i = 0; i != windowsize; ++i) hash->chain[i] = i; /*same value as index indicates uninitialized*/
-
-  for(i = 0; i <= MAX_SUPPORTED_DEFLATE_LENGTH; ++i) hash->headz[i] = -1;
-  for(i = 0; i != windowsize; ++i) hash->chainz[i] = i; /*same value as index indicates uninitialized*/
-
-  return 0;
-}
-
-static void hash_cleanup(Hash* hash) {
-  lodepng_free(hash->head);
-  lodepng_free(hash->val);
-  lodepng_free(hash->chain);
-
-  lodepng_free(hash->zeros);
-  lodepng_free(hash->headz);
-  lodepng_free(hash->chainz);
-}
-
-
-
-static unsigned getHash(const unsigned char* data, size_t size, size_t pos) {
-  unsigned result = 0;
-  if(pos + 2 < size) {
-    /*A simple shift and xor hash is used. Since the data of PNGs is dominated
-    by zeroes due to the filters, a better hash does not have a significant
-    effect on speed in traversing the chain, and causes more time spend on
-    calculating the hash.*/
-    result ^= ((unsigned)data[pos + 0] << 0u);
-    result ^= ((unsigned)data[pos + 1] << 4u);
-    result ^= ((unsigned)data[pos + 2] << 8u);
-  } else {
-    size_t amount, i;
-    if(pos >= size) return 0;
-    amount = size - pos;
-    for(i = 0; i != amount; ++i) result ^= ((unsigned)data[pos + i] << (i * 8u));
-  }
-  return result & HASH_BIT_MASK;
-}
-
-static unsigned countZeros(const unsigned char* data, size_t size, size_t pos) {
-  const unsigned char* start = data + pos;
-  const unsigned char* end = start + MAX_SUPPORTED_DEFLATE_LENGTH;
-  if(end > data + size) end = data + size;
-  data = start;
-  while(data != end && *data == 0) ++data;
-  /*subtracting two addresses returned as 32-bit number (max value is MAX_SUPPORTED_DEFLATE_LENGTH)*/
-  return (unsigned)(data - start);
-}
-
-/*wpos = pos & (windowsize - 1)*/
-static void updateHashChain(Hash* hash, size_t wpos, unsigned hashval, unsigned short numzeros) {
-  hash->val[wpos] = (int)hashval;
-  if(hash->head[hashval] != -1) hash->chain[wpos] = hash->head[hashval];
-  hash->head[hashval] = (int)wpos;
-
-  hash->zeros[wpos] = numzeros;
-  if(hash->headz[numzeros] != -1) hash->chainz[wpos] = hash->headz[numzeros];
-  hash->headz[numzeros] = (int)wpos;
-}
-
-/*
-LZ77-encode the data. Return value is error code. The input are raw bytes, the output
-is in the form of unsigned integers with codes representing for example literal bytes, or
-length/distance pairs.
-It uses a hash table technique to let it encode faster. When doing LZ77 encoding, a
-sliding window (of windowsize) is used, and all past bytes in that window can be used as
-the "dictionary". A brute force search through all possible distances would be slow, and
-this hash technique is one out of several ways to speed this up.
-*/
-static unsigned encodeLZ77(uivector* out, Hash* hash,
-                           const unsigned char* in, size_t inpos, size_t insize, unsigned windowsize,
-                           unsigned minmatch, unsigned nicematch, unsigned lazymatching) {
-  size_t pos;
-  unsigned i, error = 0;
-  /*for large window lengths, assume the user wants no compression loss. Otherwise, max hash chain length speedup.*/
-  unsigned maxchainlength = windowsize >= 8192 ? windowsize : windowsize / 8u;
-  unsigned maxlazymatch = windowsize >= 8192 ? MAX_SUPPORTED_DEFLATE_LENGTH : 64;
-
-  unsigned usezeros = 1; /*not sure if setting it to false for windowsize < 8192 is better or worse*/
-  unsigned numzeros = 0;
-
-  unsigned offset; /*the offset represents the distance in LZ77 terminology*/
-  unsigned length;
-  unsigned lazy = 0;
-  unsigned lazylength = 0, lazyoffset = 0;
-  unsigned hashval;
-  unsigned current_offset, current_length;
-  unsigned prev_offset;
-  const unsigned char *lastptr, *foreptr, *backptr;
-  unsigned hashpos;
-
-  if(windowsize == 0 || windowsize > 32768) return 60; /*error: windowsize smaller/larger than allowed*/
-  if((windowsize & (windowsize - 1)) != 0) return 90; /*error: must be power of two*/
-
-  if(nicematch > MAX_SUPPORTED_DEFLATE_LENGTH) nicematch = MAX_SUPPORTED_DEFLATE_LENGTH;
-
-  for(pos = inpos; pos < insize; ++pos) {
-    size_t wpos = pos & (windowsize - 1); /*position for in 'circular' hash buffers*/
-    unsigned chainlength = 0;
-
-    hashval = getHash(in, insize, pos);
-
-    if(usezeros && hashval == 0) {
-      if(numzeros == 0) numzeros = countZeros(in, insize, pos);
-      else if(pos + numzeros > insize || in[pos + numzeros - 1] != 0) --numzeros;
-    } else {
-      numzeros = 0;
-    }
-
-    updateHashChain(hash, wpos, hashval, numzeros);
-
-    /*the length and offset found for the current position*/
-    length = 0;
-    offset = 0;
-
-    hashpos = hash->chain[wpos];
-
-    lastptr = &in[insize < pos + MAX_SUPPORTED_DEFLATE_LENGTH ? insize : pos + MAX_SUPPORTED_DEFLATE_LENGTH];
-
-    /*search for the longest string*/
-    prev_offset = 0;
-    for(;;) {
-      if(chainlength++ >= maxchainlength) break;
-      current_offset = (unsigned)(hashpos <= wpos ? wpos - hashpos : wpos - hashpos + windowsize);
-
-      if(current_offset < prev_offset) break; /*stop when went completely around the circular buffer*/
-      prev_offset = current_offset;
-      if(current_offset > 0) {
-        /*test the next characters*/
-        foreptr = &in[pos];
-        backptr = &in[pos - current_offset];
-
-        /*common case in PNGs is lots of zeros. Quickly skip over them as a speedup*/
-        if(numzeros >= 3) {
-          unsigned skip = hash->zeros[hashpos];
-          if(skip > numzeros) skip = numzeros;
-          backptr += skip;
-          foreptr += skip;
-        }
-
-        while(foreptr != lastptr && *backptr == *foreptr) /*maximum supported length by deflate is max length*/ {
-          ++backptr;
-          ++foreptr;
-        }
-        current_length = (unsigned)(foreptr - &in[pos]);
-
-        if(current_length > length) {
-          length = current_length; /*the longest length*/
-          offset = current_offset; /*the offset that is related to this longest length*/
-          /*jump out once a length of max length is found (speed gain). This also jumps
-          out if length is MAX_SUPPORTED_DEFLATE_LENGTH*/
-          if(current_length >= nicematch) break;
-        }
-      }
-
-      if(hashpos == hash->chain[hashpos]) break;
-
-      if(numzeros >= 3 && length > numzeros) {
-        hashpos = hash->chainz[hashpos];
-        if(hash->zeros[hashpos] != numzeros) break;
-      } else {
-        hashpos = hash->chain[hashpos];
-        /*outdated hash value, happens if particular value was not encountered in whole last window*/
-        if(hash->val[hashpos] != (int)hashval) break;
-      }
-    }
-
-    if(lazymatching) {
-      if(!lazy && length >= 3 && length <= maxlazymatch && length < MAX_SUPPORTED_DEFLATE_LENGTH) {
-        lazy = 1;
-        lazylength = length;
-        lazyoffset = offset;
-        continue; /*try the next byte*/
-      }
-      if(lazy) {
-        lazy = 0;
-        if(pos == 0) ERROR_BREAK(81);
-        if(length > lazylength + 1) {
-          /*push the previous character as literal*/
-          if(!uivector_push_back(out, in[pos - 1])) ERROR_BREAK(83 /*alloc fail*/);
-        } else {
-          length = lazylength;
-          offset = lazyoffset;
-          hash->head[hashval] = -1; /*the same hashchain update will be done, this ensures no wrong alteration*/
-          hash->headz[numzeros] = -1; /*idem*/
-          --pos;
-        }
-      }
-    }
-    if(length >= 3 && offset > windowsize) ERROR_BREAK(86 /*too big (or overflown negative) offset*/);
-
-    /*encode it as length/distance pair or literal value*/
-    if(length < 3) /*only lengths of 3 or higher are supported as length/distance pair*/ {
-      if(!uivector_push_back(out, in[pos])) ERROR_BREAK(83 /*alloc fail*/);
-    } else if(length < minmatch || (length == 3 && offset > 4096)) {
-      /*compensate for the fact that longer offsets have more extra bits, a
-      length of only 3 may be not worth it then*/
-      if(!uivector_push_back(out, in[pos])) ERROR_BREAK(83 /*alloc fail*/);
-    } else {
-      addLengthDistance(out, length, offset);
-      for(i = 1; i < length; ++i) {
-        ++pos;
-        wpos = pos & (windowsize - 1);
-        hashval = getHash(in, insize, pos);
-        if(usezeros && hashval == 0) {
-          if(numzeros == 0) numzeros = countZeros(in, insize, pos);
-          else if(pos + numzeros > insize || in[pos + numzeros - 1] != 0) --numzeros;
-        } else {
-          numzeros = 0;
-        }
-        updateHashChain(hash, wpos, hashval, numzeros);
-      }
-    }
-  } /*end of the loop through each character of input*/
-
-  return error;
-}
-
-/* /////////////////////////////////////////////////////////////////////////// */
-
-static unsigned deflateNoCompression(ucvector* out, const unsigned char* data, size_t datasize) {
-  /*non compressed deflate block data: 1 bit BFINAL,2 bits BTYPE,(5 bits): it jumps to start of next byte,
-  2 bytes LEN, 2 bytes NLEN, LEN bytes literal DATA*/
-
-  size_t i, numdeflateblocks = (datasize + 65534u) / 65535u;
-  unsigned datapos = 0;
-  for(i = 0; i != numdeflateblocks; ++i) {
-    unsigned BFINAL, BTYPE, LEN, NLEN;
-    unsigned char firstbyte;
-    size_t pos = out->size;
-
-    BFINAL = (i == numdeflateblocks - 1);
-    BTYPE = 0;
-
-    LEN = 65535;
-    if(datasize - datapos < 65535u) LEN = (unsigned)datasize - datapos;
-    NLEN = 65535 - LEN;
-
-    if(!ucvector_resize(out, out->size + LEN + 5)) return 83; /*alloc fail*/
-
-    firstbyte = (unsigned char)(BFINAL + ((BTYPE & 1u) << 1u) + ((BTYPE & 2u) << 1u));
-    out->data[pos + 0] = firstbyte;
-    out->data[pos + 1] = (unsigned char)(LEN & 255);
-    out->data[pos + 2] = (unsigned char)(LEN >> 8u);
-    out->data[pos + 3] = (unsigned char)(NLEN & 255);
-    out->data[pos + 4] = (unsigned char)(NLEN >> 8u);
-    lodepng_memcpy(out->data + pos + 5, data + datapos, LEN);
-    datapos += LEN;
-  }
-
-  return 0;
-}
-
-/*
-write the lz77-encoded data, which has lit, len and dist codes, to compressed stream using huffman trees.
-tree_ll: the tree for lit and len codes.
-tree_d: the tree for distance codes.
-*/
-static void writeLZ77data(LodePNGBitWriter* writer, const uivector* lz77_encoded,
-                          const HuffmanTree* tree_ll, const HuffmanTree* tree_d) {
-  size_t i = 0;
-  for(i = 0; i != lz77_encoded->size; ++i) {
-    unsigned val = lz77_encoded->data[i];
-    writeBitsReversed(writer, tree_ll->codes[val], tree_ll->lengths[val]);
-    if(val > 256) /*for a length code, 3 more things have to be added*/ {
-      unsigned length_index = val - FIRST_LENGTH_CODE_INDEX;
-      unsigned n_length_extra_bits = LENGTHEXTRA[length_index];
-      unsigned length_extra_bits = lz77_encoded->data[++i];
-
-      unsigned distance_code = lz77_encoded->data[++i];
-
-      unsigned distance_index = distance_code;
-      unsigned n_distance_extra_bits = DISTANCEEXTRA[distance_index];
-      unsigned distance_extra_bits = lz77_encoded->data[++i];
-
-      writeBits(writer, length_extra_bits, n_length_extra_bits);
-      writeBitsReversed(writer, tree_d->codes[distance_code], tree_d->lengths[distance_code]);
-      writeBits(writer, distance_extra_bits, n_distance_extra_bits);
-    }
-  }
-}
-
-/*Deflate for a block of type "dynamic", that is, with freely, optimally, created huffman trees*/
-static unsigned deflateDynamic(LodePNGBitWriter* writer, Hash* hash,
-                               const unsigned char* data, size_t datapos, size_t dataend,
-                               const LodePNGCompressSettings* settings, unsigned final) {
-  unsigned error = 0;
-
-  /*
-  A block is compressed as follows: The PNG data is lz77 encoded, resulting in
-  literal bytes and length/distance pairs. This is then huffman compressed with
-  two huffman trees. One huffman tree is used for the lit and len values ("ll"),
-  another huffman tree is used for the dist values ("d"). These two trees are
-  stored using their code lengths, and to compress even more these code lengths
-  are also run-length encoded and huffman compressed. This gives a huffman tree
-  of code lengths "cl". The code lengths used to describe this third tree are
-  the code length code lengths ("clcl").
-  */
-
-  /*The lz77 encoded data, represented with integers since there will also be length and distance codes in it*/
-  uivector lz77_encoded;
-  HuffmanTree tree_ll; /*tree for lit,len values*/
-  HuffmanTree tree_d; /*tree for distance codes*/
-  HuffmanTree tree_cl; /*tree for encoding the code lengths representing tree_ll and tree_d*/
-  unsigned* frequencies_ll = 0; /*frequency of lit,len codes*/
-  unsigned* frequencies_d = 0; /*frequency of dist codes*/
-  unsigned* frequencies_cl = 0; /*frequency of code length codes*/
-  unsigned* bitlen_lld = 0; /*lit,len,dist code lengths (int bits), literally (without repeat codes).*/
-  unsigned* bitlen_lld_e = 0; /*bitlen_lld encoded with repeat codes (this is a rudimentary run length compression)*/
-  size_t datasize = dataend - datapos;
-
-  /*
-  If we could call "bitlen_cl" the the code length code lengths ("clcl"), that is the bit lengths of codes to represent
-  tree_cl in CLCL_ORDER, then due to the huffman compression of huffman tree representations ("two levels"), there are
-  some analogies:
-  bitlen_lld is to tree_cl what data is to tree_ll and tree_d.
-  bitlen_lld_e is to bitlen_lld what lz77_encoded is to data.
-  bitlen_cl is to bitlen_lld_e what bitlen_lld is to lz77_encoded.
-  */
-
-  unsigned BFINAL = final;
-  size_t i;
-  size_t numcodes_ll, numcodes_d, numcodes_lld, numcodes_lld_e, numcodes_cl;
-  unsigned HLIT, HDIST, HCLEN;
-
-  uivector_init(&lz77_encoded);
-  HuffmanTree_init(&tree_ll);
-  HuffmanTree_init(&tree_d);
-  HuffmanTree_init(&tree_cl);
-  /* could fit on stack, but >1KB is on the larger side so allocate instead */
-  frequencies_ll = (unsigned*)lodepng_malloc(286 * sizeof(*frequencies_ll));
-  frequencies_d = (unsigned*)lodepng_malloc(30 * sizeof(*frequencies_d));
-  frequencies_cl = (unsigned*)lodepng_malloc(NUM_CODE_LENGTH_CODES * sizeof(*frequencies_cl));
-
-  if(!frequencies_ll || !frequencies_d || !frequencies_cl) error = 83; /*alloc fail*/
-
-  /*This while loop never loops due to a break at the end, it is here to
-  allow breaking out of it to the cleanup phase on error conditions.*/
-  while(!error) {
-    lodepng_memset(frequencies_ll, 0, 286 * sizeof(*frequencies_ll));
-    lodepng_memset(frequencies_d, 0, 30 * sizeof(*frequencies_d));
-    lodepng_memset(frequencies_cl, 0, NUM_CODE_LENGTH_CODES * sizeof(*frequencies_cl));
-
-    if(settings->use_lz77) {
-      error = encodeLZ77(&lz77_encoded, hash, data, datapos, dataend, settings->windowsize,
-                         settings->minmatch, settings->nicematch, settings->lazymatching);
-      if(error) break;
-    } else {
-      if(!uivector_resize(&lz77_encoded, datasize)) ERROR_BREAK(83 /*alloc fail*/);
-      for(i = datapos; i < dataend; ++i) lz77_encoded.data[i - datapos] = data[i]; /*no LZ77, but still will be Huffman compressed*/
-    }
-
-    /*Count the frequencies of lit, len and dist codes*/
-    for(i = 0; i != lz77_encoded.size; ++i) {
-      unsigned symbol = lz77_encoded.data[i];
-      ++frequencies_ll[symbol];
-      if(symbol > 256) {
-        unsigned dist = lz77_encoded.data[i + 2];
-        ++frequencies_d[dist];
-        i += 3;
-      }
-    }
-    frequencies_ll[256] = 1; /*there will be exactly 1 end code, at the end of the block*/
-
-    /*Make both huffman trees, one for the lit and len codes, one for the dist codes*/
-    error = HuffmanTree_makeFromFrequencies(&tree_ll, frequencies_ll, 257, 286, 15);
-    if(error) break;
-    /*2, not 1, is chosen for mincodes: some buggy PNG decoders require at least 2 symbols in the dist tree*/
-    error = HuffmanTree_makeFromFrequencies(&tree_d, frequencies_d, 2, 30, 15);
-    if(error) break;
-
-    numcodes_ll = LODEPNG_MIN(tree_ll.numcodes, 286);
-    numcodes_d = LODEPNG_MIN(tree_d.numcodes, 30);
-    /*store the code lengths of both generated trees in bitlen_lld*/
-    numcodes_lld = numcodes_ll + numcodes_d;
-    bitlen_lld = (unsigned*)lodepng_malloc(numcodes_lld * sizeof(*bitlen_lld));
-    /*numcodes_lld_e never needs more size than bitlen_lld*/
-    bitlen_lld_e = (unsigned*)lodepng_malloc(numcodes_lld * sizeof(*bitlen_lld_e));
-    if(!bitlen_lld || !bitlen_lld_e) ERROR_BREAK(83); /*alloc fail*/
-    numcodes_lld_e = 0;
-
-    for(i = 0; i != numcodes_ll; ++i) bitlen_lld[i] = tree_ll.lengths[i];
-    for(i = 0; i != numcodes_d; ++i) bitlen_lld[numcodes_ll + i] = tree_d.lengths[i];
-
-    /*run-length compress bitlen_ldd into bitlen_lld_e by using repeat codes 16 (copy length 3-6 times),
-    17 (3-10 zeroes), 18 (11-138 zeroes)*/
-    for(i = 0; i != numcodes_lld; ++i) {
-      unsigned j = 0; /*amount of repetitions*/
-      while(i + j + 1 < numcodes_lld && bitlen_lld[i + j + 1] == bitlen_lld[i]) ++j;
-
-      if(bitlen_lld[i] == 0 && j >= 2) /*repeat code for zeroes*/ {
-        ++j; /*include the first zero*/
-        if(j <= 10) /*repeat code 17 supports max 10 zeroes*/ {
-          bitlen_lld_e[numcodes_lld_e++] = 17;
-          bitlen_lld_e[numcodes_lld_e++] = j - 3;
-        } else /*repeat code 18 supports max 138 zeroes*/ {
-          if(j > 138) j = 138;
-          bitlen_lld_e[numcodes_lld_e++] = 18;
-          bitlen_lld_e[numcodes_lld_e++] = j - 11;
-        }
-        i += (j - 1);
-      } else if(j >= 3) /*repeat code for value other than zero*/ {
-        size_t k;
-        unsigned num = j / 6u, rest = j % 6u;
-        bitlen_lld_e[numcodes_lld_e++] = bitlen_lld[i];
-        for(k = 0; k < num; ++k) {
-          bitlen_lld_e[numcodes_lld_e++] = 16;
-          bitlen_lld_e[numcodes_lld_e++] = 6 - 3;
-        }
-        if(rest >= 3) {
-          bitlen_lld_e[numcodes_lld_e++] = 16;
-          bitlen_lld_e[numcodes_lld_e++] = rest - 3;
-        }
-        else j -= rest;
-        i += j;
-      } else /*too short to benefit from repeat code*/ {
-        bitlen_lld_e[numcodes_lld_e++] = bitlen_lld[i];
-      }
-    }
-
-    /*generate tree_cl, the huffmantree of huffmantrees*/
-    for(i = 0; i != numcodes_lld_e; ++i) {
-      ++frequencies_cl[bitlen_lld_e[i]];
-      /*after a repeat code come the bits that specify the number of repetitions,
-      those don't need to be in the frequencies_cl calculation*/
-      if(bitlen_lld_e[i] >= 16) ++i;
-    }
-
-    error = HuffmanTree_makeFromFrequencies(&tree_cl, frequencies_cl,
-                                            NUM_CODE_LENGTH_CODES, NUM_CODE_LENGTH_CODES, 7);
-    if(error) break;
-
-    /*compute amount of code-length-code-lengths to output*/
-    numcodes_cl = NUM_CODE_LENGTH_CODES;
-    /*trim zeros at the end (using CLCL_ORDER), but minimum size must be 4 (see HCLEN below)*/
-    while(numcodes_cl > 4u && tree_cl.lengths[CLCL_ORDER[numcodes_cl - 1u]] == 0) {
-      numcodes_cl--;
-    }
-
-    /*
-    Write everything into the output
-
-    After the BFINAL and BTYPE, the dynamic block consists out of the following:
-    - 5 bits HLIT, 5 bits HDIST, 4 bits HCLEN
-    - (HCLEN+4)*3 bits code lengths of code length alphabet
-    - HLIT + 257 code lengths of lit/length alphabet (encoded using the code length
-      alphabet, + possible repetition codes 16, 17, 18)
-    - HDIST + 1 code lengths of distance alphabet (encoded using the code length
-      alphabet, + possible repetition codes 16, 17, 18)
-    - compressed data
-    - 256 (end code)
-    */
-
-    /*Write block type*/
-    writeBits(writer, BFINAL, 1);
-    writeBits(writer, 0, 1); /*first bit of BTYPE "dynamic"*/
-    writeBits(writer, 1, 1); /*second bit of BTYPE "dynamic"*/
-
-    /*write the HLIT, HDIST and HCLEN values*/
-    /*all three sizes take trimmed ending zeroes into account, done either by HuffmanTree_makeFromFrequencies
-    or in the loop for numcodes_cl above, which saves space. */
-    HLIT = (unsigned)(numcodes_ll - 257);
-    HDIST = (unsigned)(numcodes_d - 1);
-    HCLEN = (unsigned)(numcodes_cl - 4);
-    writeBits(writer, HLIT, 5);
-    writeBits(writer, HDIST, 5);
-    writeBits(writer, HCLEN, 4);
-
-    /*write the code lengths of the code length alphabet ("bitlen_cl")*/
-    for(i = 0; i != numcodes_cl; ++i) writeBits(writer, tree_cl.lengths[CLCL_ORDER[i]], 3);
-
-    /*write the lengths of the lit/len AND the dist alphabet*/
-    for(i = 0; i != numcodes_lld_e; ++i) {
-      writeBitsReversed(writer, tree_cl.codes[bitlen_lld_e[i]], tree_cl.lengths[bitlen_lld_e[i]]);
-      /*extra bits of repeat codes*/
-      if(bitlen_lld_e[i] == 16) writeBits(writer, bitlen_lld_e[++i], 2);
-      else if(bitlen_lld_e[i] == 17) writeBits(writer, bitlen_lld_e[++i], 3);
-      else if(bitlen_lld_e[i] == 18) writeBits(writer, bitlen_lld_e[++i], 7);
-    }
-
-    /*write the compressed data symbols*/
-    writeLZ77data(writer, &lz77_encoded, &tree_ll, &tree_d);
-    /*error: the length of the end code 256 must be larger than 0*/
-    if(tree_ll.lengths[256] == 0) ERROR_BREAK(64);
-
-    /*write the end code*/
-    writeBitsReversed(writer, tree_ll.codes[256], tree_ll.lengths[256]);
-
-    break; /*end of error-while*/
-  }
-
-  /*cleanup*/
-  uivector_cleanup(&lz77_encoded);
-  HuffmanTree_cleanup(&tree_ll);
-  HuffmanTree_cleanup(&tree_d);
-  HuffmanTree_cleanup(&tree_cl);
-  lodepng_free(frequencies_ll);
-  lodepng_free(frequencies_d);
-  lodepng_free(frequencies_cl);
-  lodepng_free(bitlen_lld);
-  lodepng_free(bitlen_lld_e);
-
-  return error;
-}
-
-static unsigned deflateFixed(LodePNGBitWriter* writer, Hash* hash,
-                             const unsigned char* data,
-                             size_t datapos, size_t dataend,
-                             const LodePNGCompressSettings* settings, unsigned final) {
-  HuffmanTree tree_ll; /*tree for literal values and length codes*/
-  HuffmanTree tree_d; /*tree for distance codes*/
-
-  unsigned BFINAL = final;
-  unsigned error = 0;
-  size_t i;
-
-  HuffmanTree_init(&tree_ll);
-  HuffmanTree_init(&tree_d);
-
-  error = generateFixedLitLenTree(&tree_ll);
-  if(!error) error = generateFixedDistanceTree(&tree_d);
-
-  if(!error) {
-    writeBits(writer, BFINAL, 1);
-    writeBits(writer, 1, 1); /*first bit of BTYPE*/
-    writeBits(writer, 0, 1); /*second bit of BTYPE*/
-
-    if(settings->use_lz77) /*LZ77 encoded*/ {
-      uivector lz77_encoded;
-      uivector_init(&lz77_encoded);
-      error = encodeLZ77(&lz77_encoded, hash, data, datapos, dataend, settings->windowsize,
-                         settings->minmatch, settings->nicematch, settings->lazymatching);
-      if(!error) writeLZ77data(writer, &lz77_encoded, &tree_ll, &tree_d);
-      uivector_cleanup(&lz77_encoded);
-    } else /*no LZ77, but still will be Huffman compressed*/ {
-      for(i = datapos; i < dataend; ++i) {
-        writeBitsReversed(writer, tree_ll.codes[data[i]], tree_ll.lengths[data[i]]);
-      }
-    }
-    /*add END code*/
-    if(!error) writeBitsReversed(writer,tree_ll.codes[256], tree_ll.lengths[256]);
-  }
-
-  /*cleanup*/
-  HuffmanTree_cleanup(&tree_ll);
-  HuffmanTree_cleanup(&tree_d);
-
-  return error;
-}
-
-static unsigned lodepng_deflatev(ucvector* out, const unsigned char* in, size_t insize,
-                                 const LodePNGCompressSettings* settings) {
-  unsigned error = 0;
-  size_t i, blocksize, numdeflateblocks;
-  Hash hash;
-  LodePNGBitWriter writer;
-
-  LodePNGBitWriter_init(&writer, out);
-
-  if(settings->btype > 2) return 61;
-  else if(settings->btype == 0) return deflateNoCompression(out, in, insize);
-  else if(settings->btype == 1) blocksize = insize;
-  else /*if(settings->btype == 2)*/ {
-    /*on PNGs, deflate blocks of 65-262k seem to give most dense encoding*/
-    blocksize = insize / 8u + 8;
-    if(blocksize < 65536) blocksize = 65536;
-    if(blocksize > 262144) blocksize = 262144;
-  }
-
-  numdeflateblocks = (insize + blocksize - 1) / blocksize;
-  if(numdeflateblocks == 0) numdeflateblocks = 1;
-
-  error = hash_init(&hash, settings->windowsize);
-
-  if(!error) {
-    for(i = 0; i != numdeflateblocks && !error; ++i) {
-      unsigned final = (i == numdeflateblocks - 1);
-      size_t start = i * blocksize;
-      size_t end = start + blocksize;
-      if(end > insize) end = insize;
-
-      if(settings->btype == 1) error = deflateFixed(&writer, &hash, in, start, end, settings, final);
-      else if(settings->btype == 2) error = deflateDynamic(&writer, &hash, in, start, end, settings, final);
-    }
-  }
-
-  hash_cleanup(&hash);
-
-  return error;
-}
-
-unsigned lodepng_deflate(unsigned char** out, size_t* outsize,
-                         const unsigned char* in, size_t insize,
-                         const LodePNGCompressSettings* settings) {
-  ucvector v = ucvector_init(*out, *outsize);
-  unsigned error = lodepng_deflatev(&v, in, insize, settings);
-  *out = v.data;
-  *outsize = v.size;
-  return error;
-}
-
-static unsigned deflate(unsigned char** out, size_t* outsize,
-                        const unsigned char* in, size_t insize,
-                        const LodePNGCompressSettings* settings) {
-  if(settings->custom_deflate) {
-    unsigned error = settings->custom_deflate(out, outsize, in, insize, settings);
-    /*the custom deflate is allowed to have its own error codes, however, we translate it to code 111*/
-    return error ? 111 : 0;
-  } else {
-    return lodepng_deflate(out, outsize, in, insize, settings);
-  }
-}
-
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Adler32                                                                / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-static unsigned update_adler32(unsigned adler, const unsigned char* data, unsigned len) {
-  unsigned s1 = adler & 0xffffu;
-  unsigned s2 = (adler >> 16u) & 0xffffu;
-
-  while(len != 0u) {
-    unsigned i;
-    /*at least 5552 sums can be done before the sums overflow, saving a lot of module divisions*/
-    unsigned amount = len > 5552u ? 5552u : len;
-    len -= amount;
-    for(i = 0; i != amount; ++i) {
-      s1 += (*data++);
-      s2 += s1;
-    }
-    s1 %= 65521u;
-    s2 %= 65521u;
-  }
-
-  return (s2 << 16u) | s1;
-}
-
-/*Return the adler32 of the bytes data[0..len-1]*/
-static unsigned adler32(const unsigned char* data, unsigned len) {
-  return update_adler32(1u, data, len);
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Zlib                                                                   / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-static unsigned lodepng_zlib_decompressv(ucvector* out,
-                                         const unsigned char* in, size_t insize,
-                                         const LodePNGDecompressSettings* settings) {
-  unsigned error = 0;
-  unsigned CM, CINFO, FDICT;
-
-  if(insize < 2) return 53; /*error, size of zlib data too small*/
-  /*read information from zlib header*/
-  if((in[0] * 256 + in[1]) % 31 != 0) {
-    /*error: 256 * in[0] + in[1] must be a multiple of 31, the FCHECK value is supposed to be made that way*/
-    return 24;
-  }
-
-  CM = in[0] & 15;
-  CINFO = (in[0] >> 4) & 15;
-  /*FCHECK = in[1] & 31;*/ /*FCHECK is already tested above*/
-  FDICT = (in[1] >> 5) & 1;
-  /*FLEVEL = (in[1] >> 6) & 3;*/ /*FLEVEL is not used here*/
-
-  if(CM != 8 || CINFO > 7) {
-    /*error: only compression method 8: inflate with sliding window of 32k is supported by the PNG spec*/
-    return 25;
-  }
-  if(FDICT != 0) {
-    /*error: the specification of PNG says about the zlib stream:
-      "The additional flags shall not specify a preset dictionary."*/
-    return 26;
-  }
-
-  error = inflatev(out, in + 2, insize - 2, settings);
-  if(error) return error;
-
-  if(!settings->ignore_adler32) {
-    unsigned ADLER32 = lodepng_read32bitInt(&in[insize - 4]);
-    unsigned checksum = adler32(out->data, (unsigned)(out->size));
-    if(checksum != ADLER32) return 58; /*error, adler checksum not correct, data must be corrupted*/
-  }
-
-  return 0; /*no error*/
-}
-
-
-unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize, const unsigned char* in,
-                                 size_t insize, const LodePNGDecompressSettings* settings) {
-  ucvector v = ucvector_init(*out, *outsize);
-  unsigned error = lodepng_zlib_decompressv(&v, in, insize, settings);
-  *out = v.data;
-  *outsize = v.size;
-  return error;
-}
-
-/*expected_size is expected output size, to avoid intermediate allocations. Set to 0 if not known. */
-static unsigned zlib_decompress(unsigned char** out, size_t* outsize, size_t expected_size,
-                                const unsigned char* in, size_t insize, const LodePNGDecompressSettings* settings) {
-  unsigned error;
-  if(settings->custom_zlib) {
-    error = settings->custom_zlib(out, outsize, in, insize, settings);
-    if(error) {
-      /*the custom zlib is allowed to have its own error codes, however, we translate it to code 110*/
-      error = 110;
-      /*if there's a max output size, and the custom zlib returned error, then indicate that error instead*/
-      if(settings->max_output_size && *outsize > settings->max_output_size) error = 109;
-    }
-  } else {
-    ucvector v = ucvector_init(*out, *outsize);
-    if(expected_size) {
-      /*reserve the memory to avoid intermediate reallocations*/
-      ucvector_resize(&v, *outsize + expected_size);
-      v.size = *outsize;
-    }
-    error = lodepng_zlib_decompressv(&v, in, insize, settings);
-    *out = v.data;
-    *outsize = v.size;
-  }
-  return error;
-}
-
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in,
-                               size_t insize, const LodePNGCompressSettings* settings) {
-  size_t i;
-  unsigned error;
-  unsigned char* deflatedata = 0;
-  size_t deflatesize = 0;
-
-  error = deflate(&deflatedata, &deflatesize, in, insize, settings);
-
-  *out = NULL;
-  *outsize = 0;
-  if(!error) {
-    *outsize = deflatesize + 6;
-    *out = (unsigned char*)lodepng_malloc(*outsize);
-    if(!*out) error = 83; /*alloc fail*/
-  }
-
-  if(!error) {
-    unsigned ADLER32 = adler32(in, (unsigned)insize);
-    /*zlib data: 1 byte CMF (CM+CINFO), 1 byte FLG, deflate data, 4 byte ADLER32 checksum of the Decompressed data*/
-    unsigned CMF = 120; /*0b01111000: CM 8, CINFO 7. With CINFO 7, any window size up to 32768 can be used.*/
-    unsigned FLEVEL = 0;
-    unsigned FDICT = 0;
-    unsigned CMFFLG = 256 * CMF + FDICT * 32 + FLEVEL * 64;
-    unsigned FCHECK = 31 - CMFFLG % 31;
-    CMFFLG += FCHECK;
-
-    (*out)[0] = (unsigned char)(CMFFLG >> 8);
-    (*out)[1] = (unsigned char)(CMFFLG & 255);
-    for(i = 0; i != deflatesize; ++i) (*out)[i + 2] = deflatedata[i];
-    lodepng_set32bitInt(&(*out)[*outsize - 4], ADLER32);
-  }
-
-  lodepng_free(deflatedata);
-  return error;
-}
-
-/* compress using the default or custom zlib function */
-static unsigned zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in,
-                              size_t insize, const LodePNGCompressSettings* settings) {
-  if(settings->custom_zlib) {
-    unsigned error = settings->custom_zlib(out, outsize, in, insize, settings);
-    /*the custom zlib is allowed to have its own error codes, however, we translate it to code 111*/
-    return error ? 111 : 0;
-  } else {
-    return lodepng_zlib_compress(out, outsize, in, insize, settings);
-  }
-}
-
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#else /*no LODEPNG_COMPILE_ZLIB*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-static unsigned zlib_decompress(unsigned char** out, size_t* outsize, size_t expected_size,
-                                const unsigned char* in, size_t insize, const LodePNGDecompressSettings* settings) {
-  if(!settings->custom_zlib) return 87; /*no custom zlib function provided */
-  (void)expected_size;
-  return settings->custom_zlib(out, outsize, in, insize, settings);
-}
-#endif /*LODEPNG_COMPILE_DECODER*/
-#ifdef LODEPNG_COMPILE_ENCODER
-static unsigned zlib_compress(unsigned char** out, size_t* outsize, const unsigned char* in,
-                              size_t insize, const LodePNGCompressSettings* settings) {
-  if(!settings->custom_zlib) return 87; /*no custom zlib function provided */
-  return settings->custom_zlib(out, outsize, in, insize, settings);
-}
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#endif /*LODEPNG_COMPILE_ZLIB*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-/*this is a good tradeoff between speed and compression ratio*/
-#define DEFAULT_WINDOWSIZE 2048
-
-void lodepng_compress_settings_init(LodePNGCompressSettings* settings) {
-  /*compress with dynamic huffman tree (not in the mathematical sense, just not the predefined one)*/
-  settings->btype = 2;
-  settings->use_lz77 = 1;
-  settings->windowsize = DEFAULT_WINDOWSIZE;
-  settings->minmatch = 3;
-  settings->nicematch = 128;
-  settings->lazymatching = 1;
-
-  settings->custom_zlib = 0;
-  settings->custom_deflate = 0;
-  settings->custom_context = 0;
-}
-
-const LodePNGCompressSettings lodepng_default_compress_settings = {2, 1, DEFAULT_WINDOWSIZE, 3, 128, 1, 0, 0, 0};
-
-
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings) {
-  settings->ignore_adler32 = 0;
-  settings->ignore_nlen = 0;
-  settings->max_output_size = 0;
-
-  settings->custom_zlib = 0;
-  settings->custom_inflate = 0;
-  settings->custom_context = 0;
-}
-
-const LodePNGDecompressSettings lodepng_default_decompress_settings = {0, 0, 0, 0, 0, 0};
-
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* // End of Zlib related code. Begin of PNG related code.                 // */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_PNG
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / CRC32                                                                  / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-
-#ifdef LODEPNG_COMPILE_CRC
-/* CRC polynomial: 0xedb88320 */
-static unsigned lodepng_crc32_table[256] = {
-           0u, 1996959894u, 3993919788u, 2567524794u,  124634137u, 1886057615u, 3915621685u, 2657392035u,
-   249268274u, 2044508324u, 3772115230u, 2547177864u,  162941995u, 2125561021u, 3887607047u, 2428444049u,
-   498536548u, 1789927666u, 4089016648u, 2227061214u,  450548861u, 1843258603u, 4107580753u, 2211677639u,
-   325883990u, 1684777152u, 4251122042u, 2321926636u,  335633487u, 1661365465u, 4195302755u, 2366115317u,
-   997073096u, 1281953886u, 3579855332u, 2724688242u, 1006888145u, 1258607687u, 3524101629u, 2768942443u,
-   901097722u, 1119000684u, 3686517206u, 2898065728u,  853044451u, 1172266101u, 3705015759u, 2882616665u,
-   651767980u, 1373503546u, 3369554304u, 3218104598u,  565507253u, 1454621731u, 3485111705u, 3099436303u,
-   671266974u, 1594198024u, 3322730930u, 2970347812u,  795835527u, 1483230225u, 3244367275u, 3060149565u,
-  1994146192u,   31158534u, 2563907772u, 4023717930u, 1907459465u,  112637215u, 2680153253u, 3904427059u,
-  2013776290u,  251722036u, 2517215374u, 3775830040u, 2137656763u,  141376813u, 2439277719u, 3865271297u,
-  1802195444u,  476864866u, 2238001368u, 4066508878u, 1812370925u,  453092731u, 2181625025u, 4111451223u,
-  1706088902u,  314042704u, 2344532202u, 4240017532u, 1658658271u,  366619977u, 2362670323u, 4224994405u,
-  1303535960u,  984961486u, 2747007092u, 3569037538u, 1256170817u, 1037604311u, 2765210733u, 3554079995u,
-  1131014506u,  879679996u, 2909243462u, 3663771856u, 1141124467u,  855842277u, 2852801631u, 3708648649u,
-  1342533948u,  654459306u, 3188396048u, 3373015174u, 1466479909u,  544179635u, 3110523913u, 3462522015u,
-  1591671054u,  702138776u, 2966460450u, 3352799412u, 1504918807u,  783551873u, 3082640443u, 3233442989u,
-  3988292384u, 2596254646u,   62317068u, 1957810842u, 3939845945u, 2647816111u,   81470997u, 1943803523u,
-  3814918930u, 2489596804u,  225274430u, 2053790376u, 3826175755u, 2466906013u,  167816743u, 2097651377u,
-  4027552580u, 2265490386u,  503444072u, 1762050814u, 4150417245u, 2154129355u,  426522225u, 1852507879u,
-  4275313526u, 2312317920u,  282753626u, 1742555852u, 4189708143u, 2394877945u,  397917763u, 1622183637u,
-  3604390888u, 2714866558u,  953729732u, 1340076626u, 3518719985u, 2797360999u, 1068828381u, 1219638859u,
-  3624741850u, 2936675148u,  906185462u, 1090812512u, 3747672003u, 2825379669u,  829329135u, 1181335161u,
-  3412177804u, 3160834842u,  628085408u, 1382605366u, 3423369109u, 3138078467u,  570562233u, 1426400815u,
-  3317316542u, 2998733608u,  733239954u, 1555261956u, 3268935591u, 3050360625u,  752459403u, 1541320221u,
-  2607071920u, 3965973030u, 1969922972u,   40735498u, 2617837225u, 3943577151u, 1913087877u,   83908371u,
-  2512341634u, 3803740692u, 2075208622u,  213261112u, 2463272603u, 3855990285u, 2094854071u,  198958881u,
-  2262029012u, 4057260610u, 1759359992u,  534414190u, 2176718541u, 4139329115u, 1873836001u,  414664567u,
-  2282248934u, 4279200368u, 1711684554u,  285281116u, 2405801727u, 4167216745u, 1634467795u,  376229701u,
-  2685067896u, 3608007406u, 1308918612u,  956543938u, 2808555105u, 3495958263u, 1231636301u, 1047427035u,
-  2932959818u, 3654703836u, 1088359270u,  936918000u, 2847714899u, 3736837829u, 1202900863u,  817233897u,
-  3183342108u, 3401237130u, 1404277552u,  615818150u, 3134207493u, 3453421203u, 1423857449u,  601450431u,
-  3009837614u, 3294710456u, 1567103746u,  711928724u, 3020668471u, 3272380065u, 1510334235u,  755167117u
-};
-
-/*Return the CRC of the bytes buf[0..len-1].*/
-unsigned lodepng_crc32(const unsigned char* data, size_t length) {
-  unsigned r = 0xffffffffu;
-  size_t i;
-  for(i = 0; i < length; ++i) {
-    r = lodepng_crc32_table[(r ^ data[i]) & 0xffu] ^ (r >> 8u);
-  }
-  return r ^ 0xffffffffu;
-}
-#else /* LODEPNG_COMPILE_CRC */
-/*in this case, the function is only declared here, and must be defined externally
-so that it will be linked in*/
-unsigned lodepng_crc32(const unsigned char* data, size_t length);
-#endif /* LODEPNG_COMPILE_CRC */
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Reading and writing PNG color channel bits                             / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/* The color channel bits of less-than-8-bit pixels are read with the MSB of bytes first,
-so LodePNGBitWriter and LodePNGBitReader can't be used for those. */
-
-static unsigned char readBitFromReversedStream(size_t* bitpointer, const unsigned char* bitstream) {
-  unsigned char result = (unsigned char)((bitstream[(*bitpointer) >> 3] >> (7 - ((*bitpointer) & 0x7))) & 1);
-  ++(*bitpointer);
-  return result;
-}
-
-/* TODO: make this faster */
-static unsigned readBitsFromReversedStream(size_t* bitpointer, const unsigned char* bitstream, size_t nbits) {
-  unsigned result = 0;
-  size_t i;
-  for(i = 0 ; i < nbits; ++i) {
-    result <<= 1u;
-    result |= (unsigned)readBitFromReversedStream(bitpointer, bitstream);
-  }
-  return result;
-}
-
-static void setBitOfReversedStream(size_t* bitpointer, unsigned char* bitstream, unsigned char bit) {
-  /*the current bit in bitstream may be 0 or 1 for this to work*/
-  if(bit == 0) bitstream[(*bitpointer) >> 3u] &=  (unsigned char)(~(1u << (7u - ((*bitpointer) & 7u))));
-  else         bitstream[(*bitpointer) >> 3u] |=  (1u << (7u - ((*bitpointer) & 7u)));
-  ++(*bitpointer);
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / PNG chunks                                                             / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-unsigned lodepng_chunk_length(const unsigned char* chunk) {
-  return lodepng_read32bitInt(chunk);
-}
-
-void lodepng_chunk_type(char type[5], const unsigned char* chunk) {
-  unsigned i;
-  for(i = 0; i != 4; ++i) type[i] = (char)chunk[4 + i];
-  type[4] = 0; /*null termination char*/
-}
-
-unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type) {
-  if(lodepng_strlen(type) != 4) return 0;
-  return (chunk[4] == type[0] && chunk[5] == type[1] && chunk[6] == type[2] && chunk[7] == type[3]);
-}
-
-unsigned char lodepng_chunk_ancillary(const unsigned char* chunk) {
-  return((chunk[4] & 32) != 0);
-}
-
-unsigned char lodepng_chunk_private(const unsigned char* chunk) {
-  return((chunk[6] & 32) != 0);
-}
-
-unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk) {
-  return((chunk[7] & 32) != 0);
-}
-
-unsigned char* lodepng_chunk_data(unsigned char* chunk) {
-  return &chunk[8];
-}
-
-const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk) {
-  return &chunk[8];
-}
-
-unsigned lodepng_chunk_check_crc(const unsigned char* chunk) {
-  unsigned length = lodepng_chunk_length(chunk);
-  unsigned CRC = lodepng_read32bitInt(&chunk[length + 8]);
-  /*the CRC is taken of the data and the 4 chunk type letters, not the length*/
-  unsigned checksum = lodepng_crc32(&chunk[4], length + 4);
-  if(CRC != checksum) return 1;
-  else return 0;
-}
-
-void lodepng_chunk_generate_crc(unsigned char* chunk) {
-  unsigned length = lodepng_chunk_length(chunk);
-  unsigned CRC = lodepng_crc32(&chunk[4], length + 4);
-  lodepng_set32bitInt(chunk + 8 + length, CRC);
-}
-
-unsigned char* lodepng_chunk_next(unsigned char* chunk, unsigned char* end) {
-  size_t available_size = (size_t)(end - chunk);
-  if(chunk >= end || available_size < 12) return end; /*too small to contain a chunk*/
-  if(chunk[0] == 0x89 && chunk[1] == 0x50 && chunk[2] == 0x4e && chunk[3] == 0x47
-    && chunk[4] == 0x0d && chunk[5] == 0x0a && chunk[6] == 0x1a && chunk[7] == 0x0a) {
-    /* Is PNG magic header at start of PNG file. Jump to first actual chunk. */
-    return chunk + 8;
-  } else {
-    size_t total_chunk_length;
-    if(lodepng_addofl(lodepng_chunk_length(chunk), 12, &total_chunk_length)) return end;
-    if(total_chunk_length > available_size) return end; /*outside of range*/
-    return chunk + total_chunk_length;
-  }
-}
-
-const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk, const unsigned char* end) {
-  size_t available_size = (size_t)(end - chunk);
-  if(chunk >= end || available_size < 12) return end; /*too small to contain a chunk*/
-  if(chunk[0] == 0x89 && chunk[1] == 0x50 && chunk[2] == 0x4e && chunk[3] == 0x47
-    && chunk[4] == 0x0d && chunk[5] == 0x0a && chunk[6] == 0x1a && chunk[7] == 0x0a) {
-    /* Is PNG magic header at start of PNG file. Jump to first actual chunk. */
-    return chunk + 8;
-  } else {
-    size_t total_chunk_length;
-    if(lodepng_addofl(lodepng_chunk_length(chunk), 12, &total_chunk_length)) return end;
-    if(total_chunk_length > available_size) return end; /*outside of range*/
-    return chunk + total_chunk_length;
-  }
-}
-
-unsigned char* lodepng_chunk_find(unsigned char* chunk, unsigned char* end, const char type[5]) {
-  for(;;) {
-    if(chunk >= end || end - chunk < 12) return 0; /* past file end: chunk + 12 > end */
-    if(lodepng_chunk_type_equals(chunk, type)) return chunk;
-    chunk = lodepng_chunk_next(chunk, end);
-  }
-}
-
-const unsigned char* lodepng_chunk_find_const(const unsigned char* chunk, const unsigned char* end, const char type[5]) {
-  for(;;) {
-    if(chunk >= end || end - chunk < 12) return 0; /* past file end: chunk + 12 > end */
-    if(lodepng_chunk_type_equals(chunk, type)) return chunk;
-    chunk = lodepng_chunk_next_const(chunk, end);
-  }
-}
-
-unsigned lodepng_chunk_append(unsigned char** out, size_t* outsize, const unsigned char* chunk) {
-  unsigned i;
-  size_t total_chunk_length, new_length;
-  unsigned char *chunk_start, *new_buffer;
-
-  if(lodepng_addofl(lodepng_chunk_length(chunk), 12, &total_chunk_length)) return 77;
-  if(lodepng_addofl(*outsize, total_chunk_length, &new_length)) return 77;
-
-  new_buffer = (unsigned char*)lodepng_realloc(*out, new_length);
-  if(!new_buffer) return 83; /*alloc fail*/
-  (*out) = new_buffer;
-  (*outsize) = new_length;
-  chunk_start = &(*out)[new_length - total_chunk_length];
-
-  for(i = 0; i != total_chunk_length; ++i) chunk_start[i] = chunk[i];
-
-  return 0;
-}
-
-/*Sets length and name and allocates the space for data and crc but does not
-set data or crc yet. Returns the start of the chunk in chunk. The start of
-the data is at chunk + 8. To finalize chunk, add the data, then use
-lodepng_chunk_generate_crc */
-static unsigned lodepng_chunk_init(unsigned char** chunk,
-                                   ucvector* out,
-                                   unsigned length, const char* type) {
-  size_t new_length = out->size;
-  if(lodepng_addofl(new_length, length, &new_length)) return 77;
-  if(lodepng_addofl(new_length, 12, &new_length)) return 77;
-  if(!ucvector_resize(out, new_length)) return 83; /*alloc fail*/
-  *chunk = out->data + new_length - length - 12u;
-
-  /*1: length*/
-  lodepng_set32bitInt(*chunk, length);
-
-  /*2: chunk name (4 letters)*/
-  lodepng_memcpy(*chunk + 4, type, 4);
-
-  return 0;
-}
-
-/* like lodepng_chunk_create but with custom allocsize */
-static unsigned lodepng_chunk_createv(ucvector* out,
-                                      unsigned length, const char* type, const unsigned char* data) {
-  unsigned char* chunk;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, length, type));
-
-  /*3: the data*/
-  lodepng_memcpy(chunk + 8, data, length);
-
-  /*4: CRC (of the chunkname characters and the data)*/
-  lodepng_chunk_generate_crc(chunk);
-
-  return 0;
-}
-
-unsigned lodepng_chunk_create(unsigned char** out, size_t* outsize,
-                              unsigned length, const char* type, const unsigned char* data) {
-  ucvector v = ucvector_init(*out, *outsize);
-  unsigned error = lodepng_chunk_createv(&v, length, type, data);
-  *out = v.data;
-  *outsize = v.size;
-  return error;
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / Color types, channels, bits                                            / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*checks if the colortype is valid and the bitdepth bd is allowed for this colortype.
-Return value is a LodePNG error code.*/
-static unsigned checkColorValidity(LodePNGColorType colortype, unsigned bd) {
-  switch(colortype) {
-    case LCT_GREY:       if(!(bd == 1 || bd == 2 || bd == 4 || bd == 8 || bd == 16)) return 37; break;
-    case LCT_RGB:        if(!(                                 bd == 8 || bd == 16)) return 37; break;
-    case LCT_PALETTE:    if(!(bd == 1 || bd == 2 || bd == 4 || bd == 8            )) return 37; break;
-    case LCT_GREY_ALPHA: if(!(                                 bd == 8 || bd == 16)) return 37; break;
-    case LCT_RGBA:       if(!(                                 bd == 8 || bd == 16)) return 37; break;
-    case LCT_MAX_OCTET_VALUE: return 31; /* invalid color type */
-    default: return 31; /* invalid color type */
-  }
-  return 0; /*allowed color type / bits combination*/
-}
-
-static unsigned getNumColorChannels(LodePNGColorType colortype) {
-  switch(colortype) {
-    case LCT_GREY: return 1;
-    case LCT_RGB: return 3;
-    case LCT_PALETTE: return 1;
-    case LCT_GREY_ALPHA: return 2;
-    case LCT_RGBA: return 4;
-    case LCT_MAX_OCTET_VALUE: return 0; /* invalid color type */
-    default: return 0; /*invalid color type*/
-  }
-}
-
-static unsigned lodepng_get_bpp_lct(LodePNGColorType colortype, unsigned bitdepth) {
-  /*bits per pixel is amount of channels * bits per channel*/
-  return getNumColorChannels(colortype) * bitdepth;
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-void lodepng_color_mode_init(LodePNGColorMode* info) {
-  info->key_defined = 0;
-  info->key_r = info->key_g = info->key_b = 0;
-  info->colortype = LCT_RGBA;
-  info->bitdepth = 8;
-  info->palette = 0;
-  info->palettesize = 0;
-}
-
-/*allocates palette memory if needed, and initializes all colors to black*/
-static void lodepng_color_mode_alloc_palette(LodePNGColorMode* info) {
-  size_t i;
-  /*if the palette is already allocated, it will have size 1024 so no reallocation needed in that case*/
-  /*the palette must have room for up to 256 colors with 4 bytes each.*/
-  if(!info->palette) info->palette = (unsigned char*)lodepng_malloc(1024);
-  if(!info->palette) return; /*alloc fail*/
-  for(i = 0; i != 256; ++i) {
-    /*Initialize all unused colors with black, the value used for invalid palette indices.
-    This is an error according to the PNG spec, but common PNG decoders make it black instead.
-    That makes color conversion slightly faster due to no error handling needed.*/
-    info->palette[i * 4 + 0] = 0;
-    info->palette[i * 4 + 1] = 0;
-    info->palette[i * 4 + 2] = 0;
-    info->palette[i * 4 + 3] = 255;
-  }
-}
-
-void lodepng_color_mode_cleanup(LodePNGColorMode* info) {
-  lodepng_palette_clear(info);
-}
-
-unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source) {
-  lodepng_color_mode_cleanup(dest);
-  lodepng_memcpy(dest, source, sizeof(LodePNGColorMode));
-  if(source->palette) {
-    dest->palette = (unsigned char*)lodepng_malloc(1024);
-    if(!dest->palette && source->palettesize) return 83; /*alloc fail*/
-    lodepng_memcpy(dest->palette, source->palette, source->palettesize * 4);
-  }
-  return 0;
-}
-
-LodePNGColorMode lodepng_color_mode_make(LodePNGColorType colortype, unsigned bitdepth) {
-  LodePNGColorMode result;
-  lodepng_color_mode_init(&result);
-  result.colortype = colortype;
-  result.bitdepth = bitdepth;
-  return result;
-}
-
-static int lodepng_color_mode_equal(const LodePNGColorMode* a, const LodePNGColorMode* b) {
-  size_t i;
-  if(a->colortype != b->colortype) return 0;
-  if(a->bitdepth != b->bitdepth) return 0;
-  if(a->key_defined != b->key_defined) return 0;
-  if(a->key_defined) {
-    if(a->key_r != b->key_r) return 0;
-    if(a->key_g != b->key_g) return 0;
-    if(a->key_b != b->key_b) return 0;
-  }
-  if(a->palettesize != b->palettesize) return 0;
-  for(i = 0; i != a->palettesize * 4; ++i) {
-    if(a->palette[i] != b->palette[i]) return 0;
-  }
-  return 1;
-}
-
-void lodepng_palette_clear(LodePNGColorMode* info) {
-  if(info->palette) lodepng_free(info->palette);
-  info->palette = 0;
-  info->palettesize = 0;
-}
-
-unsigned lodepng_palette_add(LodePNGColorMode* info,
-                             unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
-  if(!info->palette) /*allocate palette if empty*/ {
-    lodepng_color_mode_alloc_palette(info);
-    if(!info->palette) return 83; /*alloc fail*/
-  }
-  if(info->palettesize >= 256) {
-    return 108; /*too many palette values*/
-  }
-  info->palette[4 * info->palettesize + 0] = r;
-  info->palette[4 * info->palettesize + 1] = g;
-  info->palette[4 * info->palettesize + 2] = b;
-  info->palette[4 * info->palettesize + 3] = a;
-  ++info->palettesize;
-  return 0;
-}
-
-/*calculate bits per pixel out of colortype and bitdepth*/
-unsigned lodepng_get_bpp(const LodePNGColorMode* info) {
-  return lodepng_get_bpp_lct(info->colortype, info->bitdepth);
-}
-
-unsigned lodepng_get_channels(const LodePNGColorMode* info) {
-  return getNumColorChannels(info->colortype);
-}
-
-unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info) {
-  return info->colortype == LCT_GREY || info->colortype == LCT_GREY_ALPHA;
-}
-
-unsigned lodepng_is_alpha_type(const LodePNGColorMode* info) {
-  return (info->colortype & 4) != 0; /*4 or 6*/
-}
-
-unsigned lodepng_is_palette_type(const LodePNGColorMode* info) {
-  return info->colortype == LCT_PALETTE;
-}
-
-unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info) {
-  size_t i;
-  for(i = 0; i != info->palettesize; ++i) {
-    if(info->palette[i * 4 + 3] < 255) return 1;
-  }
-  return 0;
-}
-
-unsigned lodepng_can_have_alpha(const LodePNGColorMode* info) {
-  return info->key_defined
-      || lodepng_is_alpha_type(info)
-      || lodepng_has_palette_alpha(info);
-}
-
-static size_t lodepng_get_raw_size_lct(unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth) {
-  size_t bpp = lodepng_get_bpp_lct(colortype, bitdepth);
-  size_t n = (size_t)w * (size_t)h;
-  return ((n / 8u) * bpp) + ((n & 7u) * bpp + 7u) / 8u;
-}
-
-size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color) {
-  return lodepng_get_raw_size_lct(w, h, color->colortype, color->bitdepth);
-}
-
-
-#ifdef LODEPNG_COMPILE_PNG
-
-/*in an idat chunk, each scanline is a multiple of 8 bits, unlike the lodepng output buffer,
-and in addition has one extra byte per line: the filter byte. So this gives a larger
-result than lodepng_get_raw_size. Set h to 1 to get the size of 1 row including filter byte. */
-static size_t lodepng_get_raw_size_idat(unsigned w, unsigned h, unsigned bpp) {
-  /* + 1 for the filter byte, and possibly plus padding bits per line. */
-  /* Ignoring casts, the expression is equal to (w * bpp + 7) / 8 + 1, but avoids overflow of w * bpp */
-  size_t line = ((size_t)(w / 8u) * bpp) + 1u + ((w & 7u) * bpp + 7u) / 8u;
-  return (size_t)h * line;
-}
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*Safely checks whether size_t overflow can be caused due to amount of pixels.
-This check is overcautious rather than precise. If this check indicates no overflow,
-you can safely compute in a size_t (but not an unsigned):
--(size_t)w * (size_t)h * 8
--amount of bytes in IDAT (including filter, padding and Adam7 bytes)
--amount of bytes in raw color model
-Returns 1 if overflow possible, 0 if not.
-*/
-static int lodepng_pixel_overflow(unsigned w, unsigned h,
-                                  const LodePNGColorMode* pngcolor, const LodePNGColorMode* rawcolor) {
-  size_t bpp = LODEPNG_MAX(lodepng_get_bpp(pngcolor), lodepng_get_bpp(rawcolor));
-  size_t numpixels, total;
-  size_t line; /* bytes per line in worst case */
-
-  if(lodepng_mulofl((size_t)w, (size_t)h, &numpixels)) return 1;
-  if(lodepng_mulofl(numpixels, 8, &total)) return 1; /* bit pointer with 8-bit color, or 8 bytes per channel color */
-
-  /* Bytes per scanline with the expression "(w / 8u) * bpp) + ((w & 7u) * bpp + 7u) / 8u" */
-  if(lodepng_mulofl((size_t)(w / 8u), bpp, &line)) return 1;
-  if(lodepng_addofl(line, ((w & 7u) * bpp + 7u) / 8u, &line)) return 1;
-
-  if(lodepng_addofl(line, 5, &line)) return 1; /* 5 bytes overhead per line: 1 filterbyte, 4 for Adam7 worst case */
-  if(lodepng_mulofl(line, h, &total)) return 1; /* Total bytes in worst case */
-
-  return 0; /* no overflow */
-}
-#endif /*LODEPNG_COMPILE_DECODER*/
-#endif /*LODEPNG_COMPILE_PNG*/
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-
-static void LodePNGUnknownChunks_init(LodePNGInfo* info) {
-  unsigned i;
-  for(i = 0; i != 3; ++i) info->unknown_chunks_data[i] = 0;
-  for(i = 0; i != 3; ++i) info->unknown_chunks_size[i] = 0;
-}
-
-static void LodePNGUnknownChunks_cleanup(LodePNGInfo* info) {
-  unsigned i;
-  for(i = 0; i != 3; ++i) lodepng_free(info->unknown_chunks_data[i]);
-}
-
-static unsigned LodePNGUnknownChunks_copy(LodePNGInfo* dest, const LodePNGInfo* src) {
-  unsigned i;
-
-  LodePNGUnknownChunks_cleanup(dest);
-
-  for(i = 0; i != 3; ++i) {
-    size_t j;
-    dest->unknown_chunks_size[i] = src->unknown_chunks_size[i];
-    dest->unknown_chunks_data[i] = (unsigned char*)lodepng_malloc(src->unknown_chunks_size[i]);
-    if(!dest->unknown_chunks_data[i] && dest->unknown_chunks_size[i]) return 83; /*alloc fail*/
-    for(j = 0; j < src->unknown_chunks_size[i]; ++j) {
-      dest->unknown_chunks_data[i][j] = src->unknown_chunks_data[i][j];
-    }
-  }
-
-  return 0;
-}
-
-/******************************************************************************/
-
-static void LodePNGText_init(LodePNGInfo* info) {
-  info->text_num = 0;
-  info->text_keys = NULL;
-  info->text_strings = NULL;
-}
-
-static void LodePNGText_cleanup(LodePNGInfo* info) {
-  size_t i;
-  for(i = 0; i != info->text_num; ++i) {
-    string_cleanup(&info->text_keys[i]);
-    string_cleanup(&info->text_strings[i]);
-  }
-  lodepng_free(info->text_keys);
-  lodepng_free(info->text_strings);
-}
-
-static unsigned LodePNGText_copy(LodePNGInfo* dest, const LodePNGInfo* source) {
-  size_t i = 0;
-  dest->text_keys = NULL;
-  dest->text_strings = NULL;
-  dest->text_num = 0;
-  for(i = 0; i != source->text_num; ++i) {
-    CERROR_TRY_RETURN(lodepng_add_text(dest, source->text_keys[i], source->text_strings[i]));
-  }
-  return 0;
-}
-
-static unsigned lodepng_add_text_sized(LodePNGInfo* info, const char* key, const char* str, size_t size) {
-  char** new_keys = (char**)(lodepng_realloc(info->text_keys, sizeof(char*) * (info->text_num + 1)));
-  char** new_strings = (char**)(lodepng_realloc(info->text_strings, sizeof(char*) * (info->text_num + 1)));
-
-  if(new_keys) info->text_keys = new_keys;
-  if(new_strings) info->text_strings = new_strings;
-
-  if(!new_keys || !new_strings) return 83; /*alloc fail*/
-
-  ++info->text_num;
-  info->text_keys[info->text_num - 1] = alloc_string(key);
-  info->text_strings[info->text_num - 1] = alloc_string_sized(str, size);
-  if(!info->text_keys[info->text_num - 1] || !info->text_strings[info->text_num - 1]) return 83; /*alloc fail*/
-
-  return 0;
-}
-
-unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str) {
-  return lodepng_add_text_sized(info, key, str, lodepng_strlen(str));
-}
-
-void lodepng_clear_text(LodePNGInfo* info) {
-  LodePNGText_cleanup(info);
-}
-
-/******************************************************************************/
-
-static void LodePNGIText_init(LodePNGInfo* info) {
-  info->itext_num = 0;
-  info->itext_keys = NULL;
-  info->itext_langtags = NULL;
-  info->itext_transkeys = NULL;
-  info->itext_strings = NULL;
-}
-
-static void LodePNGIText_cleanup(LodePNGInfo* info) {
-  size_t i;
-  for(i = 0; i != info->itext_num; ++i) {
-    string_cleanup(&info->itext_keys[i]);
-    string_cleanup(&info->itext_langtags[i]);
-    string_cleanup(&info->itext_transkeys[i]);
-    string_cleanup(&info->itext_strings[i]);
-  }
-  lodepng_free(info->itext_keys);
-  lodepng_free(info->itext_langtags);
-  lodepng_free(info->itext_transkeys);
-  lodepng_free(info->itext_strings);
-}
-
-static unsigned LodePNGIText_copy(LodePNGInfo* dest, const LodePNGInfo* source) {
-  size_t i = 0;
-  dest->itext_keys = NULL;
-  dest->itext_langtags = NULL;
-  dest->itext_transkeys = NULL;
-  dest->itext_strings = NULL;
-  dest->itext_num = 0;
-  for(i = 0; i != source->itext_num; ++i) {
-    CERROR_TRY_RETURN(lodepng_add_itext(dest, source->itext_keys[i], source->itext_langtags[i],
-                                        source->itext_transkeys[i], source->itext_strings[i]));
-  }
-  return 0;
-}
-
-void lodepng_clear_itext(LodePNGInfo* info) {
-  LodePNGIText_cleanup(info);
-}
-
-static unsigned lodepng_add_itext_sized(LodePNGInfo* info, const char* key, const char* langtag,
-                                        const char* transkey, const char* str, size_t size) {
-  char** new_keys = (char**)(lodepng_realloc(info->itext_keys, sizeof(char*) * (info->itext_num + 1)));
-  char** new_langtags = (char**)(lodepng_realloc(info->itext_langtags, sizeof(char*) * (info->itext_num + 1)));
-  char** new_transkeys = (char**)(lodepng_realloc(info->itext_transkeys, sizeof(char*) * (info->itext_num + 1)));
-  char** new_strings = (char**)(lodepng_realloc(info->itext_strings, sizeof(char*) * (info->itext_num + 1)));
-
-  if(new_keys) info->itext_keys = new_keys;
-  if(new_langtags) info->itext_langtags = new_langtags;
-  if(new_transkeys) info->itext_transkeys = new_transkeys;
-  if(new_strings) info->itext_strings = new_strings;
-
-  if(!new_keys || !new_langtags || !new_transkeys || !new_strings) return 83; /*alloc fail*/
-
-  ++info->itext_num;
-
-  info->itext_keys[info->itext_num - 1] = alloc_string(key);
-  info->itext_langtags[info->itext_num - 1] = alloc_string(langtag);
-  info->itext_transkeys[info->itext_num - 1] = alloc_string(transkey);
-  info->itext_strings[info->itext_num - 1] = alloc_string_sized(str, size);
-
-  return 0;
-}
-
-unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag,
-                           const char* transkey, const char* str) {
-  return lodepng_add_itext_sized(info, key, langtag, transkey, str, lodepng_strlen(str));
-}
-
-/* same as set but does not delete */
-static unsigned lodepng_assign_icc(LodePNGInfo* info, const char* name, const unsigned char* profile, unsigned profile_size) {
-  if(profile_size == 0) return 100; /*invalid ICC profile size*/
-
-  info->iccp_name = alloc_string(name);
-  info->iccp_profile = (unsigned char*)lodepng_malloc(profile_size);
-
-  if(!info->iccp_name || !info->iccp_profile) return 83; /*alloc fail*/
-
-  lodepng_memcpy(info->iccp_profile, profile, profile_size);
-  info->iccp_profile_size = profile_size;
-
-  return 0; /*ok*/
-}
-
-unsigned lodepng_set_icc(LodePNGInfo* info, const char* name, const unsigned char* profile, unsigned profile_size) {
-  if(info->iccp_name) lodepng_clear_icc(info);
-  info->iccp_defined = 1;
-
-  return lodepng_assign_icc(info, name, profile, profile_size);
-}
-
-void lodepng_clear_icc(LodePNGInfo* info) {
-  string_cleanup(&info->iccp_name);
-  lodepng_free(info->iccp_profile);
-  info->iccp_profile = NULL;
-  info->iccp_profile_size = 0;
-  info->iccp_defined = 0;
-}
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-void lodepng_info_init(LodePNGInfo* info) {
-  lodepng_color_mode_init(&info->color);
-  info->interlace_method = 0;
-  info->compression_method = 0;
-  info->filter_method = 0;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  info->background_defined = 0;
-  info->background_r = info->background_g = info->background_b = 0;
-
-  LodePNGText_init(info);
-  LodePNGIText_init(info);
-
-  info->time_defined = 0;
-  info->phys_defined = 0;
-
-  info->gama_defined = 0;
-  info->chrm_defined = 0;
-  info->srgb_defined = 0;
-  info->iccp_defined = 0;
-  info->iccp_name = NULL;
-  info->iccp_profile = NULL;
-
-  info->sbit_defined = 0;
-  info->sbit_r = info->sbit_g = info->sbit_b = info->sbit_a = 0;
-
-  LodePNGUnknownChunks_init(info);
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-}
-
-void lodepng_info_cleanup(LodePNGInfo* info) {
-  lodepng_color_mode_cleanup(&info->color);
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  LodePNGText_cleanup(info);
-  LodePNGIText_cleanup(info);
-
-  lodepng_clear_icc(info);
-
-  LodePNGUnknownChunks_cleanup(info);
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-}
-
-unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source) {
-  lodepng_info_cleanup(dest);
-  lodepng_memcpy(dest, source, sizeof(LodePNGInfo));
-  lodepng_color_mode_init(&dest->color);
-  CERROR_TRY_RETURN(lodepng_color_mode_copy(&dest->color, &source->color));
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  CERROR_TRY_RETURN(LodePNGText_copy(dest, source));
-  CERROR_TRY_RETURN(LodePNGIText_copy(dest, source));
-  if(source->iccp_defined) {
-    CERROR_TRY_RETURN(lodepng_assign_icc(dest, source->iccp_name, source->iccp_profile, source->iccp_profile_size));
-  }
-
-  LodePNGUnknownChunks_init(dest);
-  CERROR_TRY_RETURN(LodePNGUnknownChunks_copy(dest, source));
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-  return 0;
-}
-
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*index: bitgroup index, bits: bitgroup size(1, 2 or 4), in: bitgroup value, out: octet array to add bits to*/
-static void addColorBits(unsigned char* out, size_t index, unsigned bits, unsigned in) {
-  unsigned m = bits == 1 ? 7 : bits == 2 ? 3 : 1; /*8 / bits - 1*/
-  /*p = the partial index in the byte, e.g. with 4 palettebits it is 0 for first half or 1 for second half*/
-  unsigned p = index & m;
-  in &= (1u << bits) - 1u; /*filter out any other bits of the input value*/
-  in = in << (bits * (m - p));
-  if(p == 0) out[index * bits / 8u] = in;
-  else out[index * bits / 8u] |= in;
-}
-
-typedef struct ColorTree ColorTree;
-
-/*
-One node of a color tree
-This is the data structure used to count the number of unique colors and to get a palette
-index for a color. It's like an octree, but because the alpha channel is used too, each
-node has 16 instead of 8 children.
-*/
-struct ColorTree {
-  ColorTree* children[16]; /*up to 16 pointers to ColorTree of next level*/
-  int index; /*the payload. Only has a meaningful value if this is in the last level*/
-};
-
-static void color_tree_init(ColorTree* tree) {
-  lodepng_memset(tree->children, 0, 16 * sizeof(*tree->children));
-  tree->index = -1;
-}
-
-static void color_tree_cleanup(ColorTree* tree) {
-  int i;
-  for(i = 0; i != 16; ++i) {
-    if(tree->children[i]) {
-      color_tree_cleanup(tree->children[i]);
-      lodepng_free(tree->children[i]);
-    }
-  }
-}
-
-/*returns -1 if color not present, its index otherwise*/
-static int color_tree_get(ColorTree* tree, unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
-  int bit = 0;
-  for(bit = 0; bit < 8; ++bit) {
-    int i = 8 * ((r >> bit) & 1) + 4 * ((g >> bit) & 1) + 2 * ((b >> bit) & 1) + 1 * ((a >> bit) & 1);
-    if(!tree->children[i]) return -1;
-    else tree = tree->children[i];
-  }
-  return tree ? tree->index : -1;
-}
-
-#ifdef LODEPNG_COMPILE_ENCODER
-static int color_tree_has(ColorTree* tree, unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
-  return color_tree_get(tree, r, g, b, a) >= 0;
-}
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-/*color is not allowed to already exist.
-Index should be >= 0 (it's signed to be compatible with using -1 for "doesn't exist")
-Returns error code, or 0 if ok*/
-static unsigned color_tree_add(ColorTree* tree,
-                               unsigned char r, unsigned char g, unsigned char b, unsigned char a, unsigned index) {
-  int bit;
-  for(bit = 0; bit < 8; ++bit) {
-    int i = 8 * ((r >> bit) & 1) + 4 * ((g >> bit) & 1) + 2 * ((b >> bit) & 1) + 1 * ((a >> bit) & 1);
-    if(!tree->children[i]) {
-      tree->children[i] = (ColorTree*)lodepng_malloc(sizeof(ColorTree));
-      if(!tree->children[i]) return 83; /*alloc fail*/
-      color_tree_init(tree->children[i]);
-    }
-    tree = tree->children[i];
-  }
-  tree->index = (int)index;
-  return 0;
-}
-
-/*put a pixel, given its RGBA color, into image of any color type*/
-static unsigned rgba8ToPixel(unsigned char* out, size_t i,
-                             const LodePNGColorMode* mode, ColorTree* tree /*for palette*/,
-                             unsigned char r, unsigned char g, unsigned char b, unsigned char a) {
-  if(mode->colortype == LCT_GREY) {
-    unsigned char gray = r; /*((unsigned short)r + g + b) / 3u;*/
-    if(mode->bitdepth == 8) out[i] = gray;
-    else if(mode->bitdepth == 16) out[i * 2 + 0] = out[i * 2 + 1] = gray;
-    else {
-      /*take the most significant bits of gray*/
-      gray = ((unsigned)gray >> (8u - mode->bitdepth)) & ((1u << mode->bitdepth) - 1u);
-      addColorBits(out, i, mode->bitdepth, gray);
-    }
-  } else if(mode->colortype == LCT_RGB) {
-    if(mode->bitdepth == 8) {
-      out[i * 3 + 0] = r;
-      out[i * 3 + 1] = g;
-      out[i * 3 + 2] = b;
-    } else {
-      out[i * 6 + 0] = out[i * 6 + 1] = r;
-      out[i * 6 + 2] = out[i * 6 + 3] = g;
-      out[i * 6 + 4] = out[i * 6 + 5] = b;
-    }
-  } else if(mode->colortype == LCT_PALETTE) {
-    int index = color_tree_get(tree, r, g, b, a);
-    if(index < 0) return 82; /*color not in palette*/
-    if(mode->bitdepth == 8) out[i] = index;
-    else addColorBits(out, i, mode->bitdepth, (unsigned)index);
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    unsigned char gray = r; /*((unsigned short)r + g + b) / 3u;*/
-    if(mode->bitdepth == 8) {
-      out[i * 2 + 0] = gray;
-      out[i * 2 + 1] = a;
-    } else if(mode->bitdepth == 16) {
-      out[i * 4 + 0] = out[i * 4 + 1] = gray;
-      out[i * 4 + 2] = out[i * 4 + 3] = a;
-    }
-  } else if(mode->colortype == LCT_RGBA) {
-    if(mode->bitdepth == 8) {
-      out[i * 4 + 0] = r;
-      out[i * 4 + 1] = g;
-      out[i * 4 + 2] = b;
-      out[i * 4 + 3] = a;
-    } else {
-      out[i * 8 + 0] = out[i * 8 + 1] = r;
-      out[i * 8 + 2] = out[i * 8 + 3] = g;
-      out[i * 8 + 4] = out[i * 8 + 5] = b;
-      out[i * 8 + 6] = out[i * 8 + 7] = a;
-    }
-  }
-
-  return 0; /*no error*/
-}
-
-/*put a pixel, given its RGBA16 color, into image of any color 16-bitdepth type*/
-static void rgba16ToPixel(unsigned char* out, size_t i,
-                         const LodePNGColorMode* mode,
-                         unsigned short r, unsigned short g, unsigned short b, unsigned short a) {
-  if(mode->colortype == LCT_GREY) {
-    unsigned short gray = r; /*((unsigned)r + g + b) / 3u;*/
-    out[i * 2 + 0] = (gray >> 8) & 255;
-    out[i * 2 + 1] = gray & 255;
-  } else if(mode->colortype == LCT_RGB) {
-    out[i * 6 + 0] = (r >> 8) & 255;
-    out[i * 6 + 1] = r & 255;
-    out[i * 6 + 2] = (g >> 8) & 255;
-    out[i * 6 + 3] = g & 255;
-    out[i * 6 + 4] = (b >> 8) & 255;
-    out[i * 6 + 5] = b & 255;
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    unsigned short gray = r; /*((unsigned)r + g + b) / 3u;*/
-    out[i * 4 + 0] = (gray >> 8) & 255;
-    out[i * 4 + 1] = gray & 255;
-    out[i * 4 + 2] = (a >> 8) & 255;
-    out[i * 4 + 3] = a & 255;
-  } else if(mode->colortype == LCT_RGBA) {
-    out[i * 8 + 0] = (r >> 8) & 255;
-    out[i * 8 + 1] = r & 255;
-    out[i * 8 + 2] = (g >> 8) & 255;
-    out[i * 8 + 3] = g & 255;
-    out[i * 8 + 4] = (b >> 8) & 255;
-    out[i * 8 + 5] = b & 255;
-    out[i * 8 + 6] = (a >> 8) & 255;
-    out[i * 8 + 7] = a & 255;
-  }
-}
-
-/*Get RGBA8 color of pixel with index i (y * width + x) from the raw image with given color type.*/
-static void getPixelColorRGBA8(unsigned char* r, unsigned char* g,
-                               unsigned char* b, unsigned char* a,
-                               const unsigned char* in, size_t i,
-                               const LodePNGColorMode* mode) {
-  if(mode->colortype == LCT_GREY) {
-    if(mode->bitdepth == 8) {
-      *r = *g = *b = in[i];
-      if(mode->key_defined && *r == mode->key_r) *a = 0;
-      else *a = 255;
-    } else if(mode->bitdepth == 16) {
-      *r = *g = *b = in[i * 2 + 0];
-      if(mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r) *a = 0;
-      else *a = 255;
-    } else {
-      unsigned highest = ((1U << mode->bitdepth) - 1U); /*highest possible value for this bit depth*/
-      size_t j = i * mode->bitdepth;
-      unsigned value = readBitsFromReversedStream(&j, in, mode->bitdepth);
-      *r = *g = *b = (value * 255) / highest;
-      if(mode->key_defined && value == mode->key_r) *a = 0;
-      else *a = 255;
-    }
-  } else if(mode->colortype == LCT_RGB) {
-    if(mode->bitdepth == 8) {
-      *r = in[i * 3 + 0]; *g = in[i * 3 + 1]; *b = in[i * 3 + 2];
-      if(mode->key_defined && *r == mode->key_r && *g == mode->key_g && *b == mode->key_b) *a = 0;
-      else *a = 255;
-    } else {
-      *r = in[i * 6 + 0];
-      *g = in[i * 6 + 2];
-      *b = in[i * 6 + 4];
-      if(mode->key_defined && 256U * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r
-         && 256U * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g
-         && 256U * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b) *a = 0;
-      else *a = 255;
-    }
-  } else if(mode->colortype == LCT_PALETTE) {
-    unsigned index;
-    if(mode->bitdepth == 8) index = in[i];
-    else {
-      size_t j = i * mode->bitdepth;
-      index = readBitsFromReversedStream(&j, in, mode->bitdepth);
-    }
-    /*out of bounds of palette not checked: see lodepng_color_mode_alloc_palette.*/
-    *r = mode->palette[index * 4 + 0];
-    *g = mode->palette[index * 4 + 1];
-    *b = mode->palette[index * 4 + 2];
-    *a = mode->palette[index * 4 + 3];
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    if(mode->bitdepth == 8) {
-      *r = *g = *b = in[i * 2 + 0];
-      *a = in[i * 2 + 1];
-    } else {
-      *r = *g = *b = in[i * 4 + 0];
-      *a = in[i * 4 + 2];
-    }
-  } else if(mode->colortype == LCT_RGBA) {
-    if(mode->bitdepth == 8) {
-      *r = in[i * 4 + 0];
-      *g = in[i * 4 + 1];
-      *b = in[i * 4 + 2];
-      *a = in[i * 4 + 3];
-    } else {
-      *r = in[i * 8 + 0];
-      *g = in[i * 8 + 2];
-      *b = in[i * 8 + 4];
-      *a = in[i * 8 + 6];
-    }
-  }
-}
-
-/*Similar to getPixelColorRGBA8, but with all the for loops inside of the color
-mode test cases, optimized to convert the colors much faster, when converting
-to the common case of RGBA with 8 bit per channel. buffer must be RGBA with
-enough memory.*/
-static void getPixelColorsRGBA8(unsigned char* LODEPNG_RESTRICT buffer, size_t numpixels,
-                                const unsigned char* LODEPNG_RESTRICT in,
-                                const LodePNGColorMode* mode) {
-  unsigned num_channels = 4;
-  size_t i;
-  if(mode->colortype == LCT_GREY) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i];
-        buffer[3] = 255;
-      }
-      if(mode->key_defined) {
-        buffer -= numpixels * num_channels;
-        for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-          if(buffer[0] == mode->key_r) buffer[3] = 0;
-        }
-      }
-    } else if(mode->bitdepth == 16) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 2];
-        buffer[3] = mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r ? 0 : 255;
-      }
-    } else {
-      unsigned highest = ((1U << mode->bitdepth) - 1U); /*highest possible value for this bit depth*/
-      size_t j = 0;
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned value = readBitsFromReversedStream(&j, in, mode->bitdepth);
-        buffer[0] = buffer[1] = buffer[2] = (value * 255) / highest;
-        buffer[3] = mode->key_defined && value == mode->key_r ? 0 : 255;
-      }
-    }
-  } else if(mode->colortype == LCT_RGB) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        lodepng_memcpy(buffer, &in[i * 3], 3);
-        buffer[3] = 255;
-      }
-      if(mode->key_defined) {
-        buffer -= numpixels * num_channels;
-        for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-          if(buffer[0] == mode->key_r && buffer[1]== mode->key_g && buffer[2] == mode->key_b) buffer[3] = 0;
-        }
-      }
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = in[i * 6 + 0];
-        buffer[1] = in[i * 6 + 2];
-        buffer[2] = in[i * 6 + 4];
-        buffer[3] = mode->key_defined
-           && 256U * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r
-           && 256U * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g
-           && 256U * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b ? 0 : 255;
-      }
-    }
-  } else if(mode->colortype == LCT_PALETTE) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned index = in[i];
-        /*out of bounds of palette not checked: see lodepng_color_mode_alloc_palette.*/
-        lodepng_memcpy(buffer, &mode->palette[index * 4], 4);
-      }
-    } else {
-      size_t j = 0;
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned index = readBitsFromReversedStream(&j, in, mode->bitdepth);
-        /*out of bounds of palette not checked: see lodepng_color_mode_alloc_palette.*/
-        lodepng_memcpy(buffer, &mode->palette[index * 4], 4);
-      }
-    }
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 2 + 0];
-        buffer[3] = in[i * 2 + 1];
-      }
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 4 + 0];
-        buffer[3] = in[i * 4 + 2];
-      }
-    }
-  } else if(mode->colortype == LCT_RGBA) {
-    if(mode->bitdepth == 8) {
-      lodepng_memcpy(buffer, in, numpixels * 4);
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = in[i * 8 + 0];
-        buffer[1] = in[i * 8 + 2];
-        buffer[2] = in[i * 8 + 4];
-        buffer[3] = in[i * 8 + 6];
-      }
-    }
-  }
-}
-
-/*Similar to getPixelColorsRGBA8, but with 3-channel RGB output.*/
-static void getPixelColorsRGB8(unsigned char* LODEPNG_RESTRICT buffer, size_t numpixels,
-                               const unsigned char* LODEPNG_RESTRICT in,
-                               const LodePNGColorMode* mode) {
-  const unsigned num_channels = 3;
-  size_t i;
-  if(mode->colortype == LCT_GREY) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i];
-      }
-    } else if(mode->bitdepth == 16) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 2];
-      }
-    } else {
-      unsigned highest = ((1U << mode->bitdepth) - 1U); /*highest possible value for this bit depth*/
-      size_t j = 0;
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned value = readBitsFromReversedStream(&j, in, mode->bitdepth);
-        buffer[0] = buffer[1] = buffer[2] = (value * 255) / highest;
-      }
-    }
-  } else if(mode->colortype == LCT_RGB) {
-    if(mode->bitdepth == 8) {
-      lodepng_memcpy(buffer, in, numpixels * 3);
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = in[i * 6 + 0];
-        buffer[1] = in[i * 6 + 2];
-        buffer[2] = in[i * 6 + 4];
-      }
-    }
-  } else if(mode->colortype == LCT_PALETTE) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned index = in[i];
-        /*out of bounds of palette not checked: see lodepng_color_mode_alloc_palette.*/
-        lodepng_memcpy(buffer, &mode->palette[index * 4], 3);
-      }
-    } else {
-      size_t j = 0;
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        unsigned index = readBitsFromReversedStream(&j, in, mode->bitdepth);
-        /*out of bounds of palette not checked: see lodepng_color_mode_alloc_palette.*/
-        lodepng_memcpy(buffer, &mode->palette[index * 4], 3);
-      }
-    }
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 2 + 0];
-      }
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = buffer[1] = buffer[2] = in[i * 4 + 0];
-      }
-    }
-  } else if(mode->colortype == LCT_RGBA) {
-    if(mode->bitdepth == 8) {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        lodepng_memcpy(buffer, &in[i * 4], 3);
-      }
-    } else {
-      for(i = 0; i != numpixels; ++i, buffer += num_channels) {
-        buffer[0] = in[i * 8 + 0];
-        buffer[1] = in[i * 8 + 2];
-        buffer[2] = in[i * 8 + 4];
-      }
-    }
-  }
-}
-
-/*Get RGBA16 color of pixel with index i (y * width + x) from the raw image with
-given color type, but the given color type must be 16-bit itself.*/
-static void getPixelColorRGBA16(unsigned short* r, unsigned short* g, unsigned short* b, unsigned short* a,
-                                const unsigned char* in, size_t i, const LodePNGColorMode* mode) {
-  if(mode->colortype == LCT_GREY) {
-    *r = *g = *b = 256 * in[i * 2 + 0] + in[i * 2 + 1];
-    if(mode->key_defined && 256U * in[i * 2 + 0] + in[i * 2 + 1] == mode->key_r) *a = 0;
-    else *a = 65535;
-  } else if(mode->colortype == LCT_RGB) {
-    *r = 256u * in[i * 6 + 0] + in[i * 6 + 1];
-    *g = 256u * in[i * 6 + 2] + in[i * 6 + 3];
-    *b = 256u * in[i * 6 + 4] + in[i * 6 + 5];
-    if(mode->key_defined
-       && 256u * in[i * 6 + 0] + in[i * 6 + 1] == mode->key_r
-       && 256u * in[i * 6 + 2] + in[i * 6 + 3] == mode->key_g
-       && 256u * in[i * 6 + 4] + in[i * 6 + 5] == mode->key_b) *a = 0;
-    else *a = 65535;
-  } else if(mode->colortype == LCT_GREY_ALPHA) {
-    *r = *g = *b = 256u * in[i * 4 + 0] + in[i * 4 + 1];
-    *a = 256u * in[i * 4 + 2] + in[i * 4 + 3];
-  } else if(mode->colortype == LCT_RGBA) {
-    *r = 256u * in[i * 8 + 0] + in[i * 8 + 1];
-    *g = 256u * in[i * 8 + 2] + in[i * 8 + 3];
-    *b = 256u * in[i * 8 + 4] + in[i * 8 + 5];
-    *a = 256u * in[i * 8 + 6] + in[i * 8 + 7];
-  }
-}
-
-unsigned lodepng_convert(unsigned char* out, const unsigned char* in,
-                         const LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in,
-                         unsigned w, unsigned h) {
-  size_t i;
-  ColorTree tree;
-  size_t numpixels = (size_t)w * (size_t)h;
-  unsigned error = 0;
-
-  if(mode_in->colortype == LCT_PALETTE && !mode_in->palette) {
-    return 107; /* error: must provide palette if input mode is palette */
-  }
-
-  if(lodepng_color_mode_equal(mode_out, mode_in)) {
-    size_t numbytes = lodepng_get_raw_size(w, h, mode_in);
-    lodepng_memcpy(out, in, numbytes);
-    return 0;
-  }
-
-  if(mode_out->colortype == LCT_PALETTE) {
-    size_t palettesize = mode_out->palettesize;
-    const unsigned char* palette = mode_out->palette;
-    size_t palsize = (size_t)1u << mode_out->bitdepth;
-    /*if the user specified output palette but did not give the values, assume
-    they want the values of the input color type (assuming that one is palette).
-    Note that we never create a new palette ourselves.*/
-    if(palettesize == 0) {
-      palettesize = mode_in->palettesize;
-      palette = mode_in->palette;
-      /*if the input was also palette with same bitdepth, then the color types are also
-      equal, so copy literally. This to preserve the exact indices that were in the PNG
-      even in case there are duplicate colors in the palette.*/
-      if(mode_in->colortype == LCT_PALETTE && mode_in->bitdepth == mode_out->bitdepth) {
-        size_t numbytes = lodepng_get_raw_size(w, h, mode_in);
-        lodepng_memcpy(out, in, numbytes);
-        return 0;
-      }
-    }
-    if(palettesize < palsize) palsize = palettesize;
-    color_tree_init(&tree);
-    for(i = 0; i != palsize; ++i) {
-      const unsigned char* p = &palette[i * 4];
-      error = color_tree_add(&tree, p[0], p[1], p[2], p[3], (unsigned)i);
-      if(error) break;
-    }
-  }
-
-  if(!error) {
-    if(mode_in->bitdepth == 16 && mode_out->bitdepth == 16) {
-      for(i = 0; i != numpixels; ++i) {
-        unsigned short r = 0, g = 0, b = 0, a = 0;
-        getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode_in);
-        rgba16ToPixel(out, i, mode_out, r, g, b, a);
-      }
-    } else if(mode_out->bitdepth == 8 && mode_out->colortype == LCT_RGBA) {
-      getPixelColorsRGBA8(out, numpixels, in, mode_in);
-    } else if(mode_out->bitdepth == 8 && mode_out->colortype == LCT_RGB) {
-      getPixelColorsRGB8(out, numpixels, in, mode_in);
-    } else {
-      unsigned char r = 0, g = 0, b = 0, a = 0;
-      for(i = 0; i != numpixels; ++i) {
-        getPixelColorRGBA8(&r, &g, &b, &a, in, i, mode_in);
-        error = rgba8ToPixel(out, i, mode_out, &tree, r, g, b, a);
-        if(error) break;
-      }
-    }
-  }
-
-  if(mode_out->colortype == LCT_PALETTE) {
-    color_tree_cleanup(&tree);
-  }
-
-  return error;
-}
-
-
-/* Converts a single rgb color without alpha from one type to another, color bits truncated to
-their bitdepth. In case of single channel (gray or palette), only the r channel is used. Slow
-function, do not use to process all pixels of an image. Alpha channel not supported on purpose:
-this is for bKGD, supporting alpha may prevent it from finding a color in the palette, from the
-specification it looks like bKGD should ignore the alpha values of the palette since it can use
-any palette index but doesn't have an alpha channel. Idem with ignoring color key. */
-unsigned lodepng_convert_rgb(
-    unsigned* r_out, unsigned* g_out, unsigned* b_out,
-    unsigned r_in, unsigned g_in, unsigned b_in,
-    const LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in) {
-  unsigned r = 0, g = 0, b = 0;
-  unsigned mul = 65535 / ((1u << mode_in->bitdepth) - 1u); /*65535, 21845, 4369, 257, 1*/
-  unsigned shift = 16 - mode_out->bitdepth;
-
-  if(mode_in->colortype == LCT_GREY || mode_in->colortype == LCT_GREY_ALPHA) {
-    r = g = b = r_in * mul;
-  } else if(mode_in->colortype == LCT_RGB || mode_in->colortype == LCT_RGBA) {
-    r = r_in * mul;
-    g = g_in * mul;
-    b = b_in * mul;
-  } else if(mode_in->colortype == LCT_PALETTE) {
-    if(r_in >= mode_in->palettesize) return 82;
-    r = mode_in->palette[r_in * 4 + 0] * 257u;
-    g = mode_in->palette[r_in * 4 + 1] * 257u;
-    b = mode_in->palette[r_in * 4 + 2] * 257u;
-  } else {
-    return 31;
-  }
-
-  /* now convert to output format */
-  if(mode_out->colortype == LCT_GREY || mode_out->colortype == LCT_GREY_ALPHA) {
-    *r_out = r >> shift ;
-  } else if(mode_out->colortype == LCT_RGB || mode_out->colortype == LCT_RGBA) {
-    *r_out = r >> shift ;
-    *g_out = g >> shift ;
-    *b_out = b >> shift ;
-  } else if(mode_out->colortype == LCT_PALETTE) {
-    unsigned i;
-    /* a 16-bit color cannot be in the palette */
-    if((r >> 8) != (r & 255) || (g >> 8) != (g & 255) || (b >> 8) != (b & 255)) return 82;
-    for(i = 0; i < mode_out->palettesize; i++) {
-      unsigned j = i * 4;
-      if((r >> 8) == mode_out->palette[j + 0] && (g >> 8) == mode_out->palette[j + 1] &&
-          (b >> 8) == mode_out->palette[j + 2]) {
-        *r_out = i;
-        return 0;
-      }
-    }
-    return 82;
-  } else {
-    return 31;
-  }
-
-  return 0;
-}
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-void lodepng_color_stats_init(LodePNGColorStats* stats) {
-  /*stats*/
-  stats->colored = 0;
-  stats->key = 0;
-  stats->key_r = stats->key_g = stats->key_b = 0;
-  stats->alpha = 0;
-  stats->numcolors = 0;
-  stats->bits = 1;
-  stats->numpixels = 0;
-  /*settings*/
-  stats->allow_palette = 1;
-  stats->allow_greyscale = 1;
-}
-
-/*function used for debug purposes with C++*/
-/*void printColorStats(LodePNGColorStats* p) {
-  std::cout << "colored: " << (int)p->colored << ", ";
-  std::cout << "key: " << (int)p->key << ", ";
-  std::cout << "key_r: " << (int)p->key_r << ", ";
-  std::cout << "key_g: " << (int)p->key_g << ", ";
-  std::cout << "key_b: " << (int)p->key_b << ", ";
-  std::cout << "alpha: " << (int)p->alpha << ", ";
-  std::cout << "numcolors: " << (int)p->numcolors << ", ";
-  std::cout << "bits: " << (int)p->bits << std::endl;
-}*/
-
-/*Returns how many bits needed to represent given value (max 8 bit)*/
-static unsigned getValueRequiredBits(unsigned char value) {
-  if(value == 0 || value == 255) return 1;
-  /*The scaling of 2-bit and 4-bit values uses multiples of 85 and 17*/
-  if(value % 17 == 0) return value % 85 == 0 ? 2 : 4;
-  return 8;
-}
-
-/*stats must already have been inited. */
-unsigned lodepng_compute_color_stats(LodePNGColorStats* stats,
-                                     const unsigned char* in, unsigned w, unsigned h,
-                                     const LodePNGColorMode* mode_in) {
-  size_t i;
-  ColorTree tree;
-  size_t numpixels = (size_t)w * (size_t)h;
-  unsigned error = 0;
-
-  /* mark things as done already if it would be impossible to have a more expensive case */
-  unsigned colored_done = lodepng_is_greyscale_type(mode_in) ? 1 : 0;
-  unsigned alpha_done = lodepng_can_have_alpha(mode_in) ? 0 : 1;
-  unsigned numcolors_done = 0;
-  unsigned bpp = lodepng_get_bpp(mode_in);
-  unsigned bits_done = (stats->bits == 1 && bpp == 1) ? 1 : 0;
-  unsigned sixteen = 0; /* whether the input image is 16 bit */
-  unsigned maxnumcolors = 257;
-  if(bpp <= 8) maxnumcolors = LODEPNG_MIN(257, stats->numcolors + (1u << bpp));
-
-  stats->numpixels += numpixels;
-
-  /*if palette not allowed, no need to compute numcolors*/
-  if(!stats->allow_palette) numcolors_done = 1;
-
-  color_tree_init(&tree);
-
-  /*If the stats was already filled in from previous data, fill its palette in tree
-  and mark things as done already if we know they are the most expensive case already*/
-  if(stats->alpha) alpha_done = 1;
-  if(stats->colored) colored_done = 1;
-  if(stats->bits == 16) numcolors_done = 1;
-  if(stats->bits >= bpp) bits_done = 1;
-  if(stats->numcolors >= maxnumcolors) numcolors_done = 1;
-
-  if(!numcolors_done) {
-    for(i = 0; i < stats->numcolors; i++) {
-      const unsigned char* color = &stats->palette[i * 4];
-      error = color_tree_add(&tree, color[0], color[1], color[2], color[3], i);
-      if(error) goto cleanup;
-    }
-  }
-
-  /*Check if the 16-bit input is truly 16-bit*/
-  if(mode_in->bitdepth == 16 && !sixteen) {
-    unsigned short r = 0, g = 0, b = 0, a = 0;
-    for(i = 0; i != numpixels; ++i) {
-      getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode_in);
-      if((r & 255) != ((r >> 8) & 255) || (g & 255) != ((g >> 8) & 255) ||
-         (b & 255) != ((b >> 8) & 255) || (a & 255) != ((a >> 8) & 255)) /*first and second byte differ*/ {
-        stats->bits = 16;
-        sixteen = 1;
-        bits_done = 1;
-        numcolors_done = 1; /*counting colors no longer useful, palette doesn't support 16-bit*/
-        break;
-      }
-    }
-  }
-
-  if(sixteen) {
-    unsigned short r = 0, g = 0, b = 0, a = 0;
-
-    for(i = 0; i != numpixels; ++i) {
-      getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode_in);
-
-      if(!colored_done && (r != g || r != b)) {
-        stats->colored = 1;
-        colored_done = 1;
-      }
-
-      if(!alpha_done) {
-        unsigned matchkey = (r == stats->key_r && g == stats->key_g && b == stats->key_b);
-        if(a != 65535 && (a != 0 || (stats->key && !matchkey))) {
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-        } else if(a == 0 && !stats->alpha && !stats->key) {
-          stats->key = 1;
-          stats->key_r = r;
-          stats->key_g = g;
-          stats->key_b = b;
-        } else if(a == 65535 && stats->key && matchkey) {
-          /* Color key cannot be used if an opaque pixel also has that RGB color. */
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-        }
-      }
-      if(alpha_done && numcolors_done && colored_done && bits_done) break;
-    }
-
-    if(stats->key && !stats->alpha) {
-      for(i = 0; i != numpixels; ++i) {
-        getPixelColorRGBA16(&r, &g, &b, &a, in, i, mode_in);
-        if(a != 0 && r == stats->key_r && g == stats->key_g && b == stats->key_b) {
-          /* Color key cannot be used if an opaque pixel also has that RGB color. */
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-        }
-      }
-    }
-  } else /* < 16-bit */ {
-    unsigned char r = 0, g = 0, b = 0, a = 0;
-    for(i = 0; i != numpixels; ++i) {
-      getPixelColorRGBA8(&r, &g, &b, &a, in, i, mode_in);
-
-      if(!bits_done && stats->bits < 8) {
-        /*only r is checked, < 8 bits is only relevant for grayscale*/
-        unsigned bits = getValueRequiredBits(r);
-        if(bits > stats->bits) stats->bits = bits;
-      }
-      bits_done = (stats->bits >= bpp);
-
-      if(!colored_done && (r != g || r != b)) {
-        stats->colored = 1;
-        colored_done = 1;
-        if(stats->bits < 8) stats->bits = 8; /*PNG has no colored modes with less than 8-bit per channel*/
-      }
-
-      if(!alpha_done) {
-        unsigned matchkey = (r == stats->key_r && g == stats->key_g && b == stats->key_b);
-        if(a != 255 && (a != 0 || (stats->key && !matchkey))) {
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-          if(stats->bits < 8) stats->bits = 8; /*PNG has no alphachannel modes with less than 8-bit per channel*/
-        } else if(a == 0 && !stats->alpha && !stats->key) {
-          stats->key = 1;
-          stats->key_r = r;
-          stats->key_g = g;
-          stats->key_b = b;
-        } else if(a == 255 && stats->key && matchkey) {
-          /* Color key cannot be used if an opaque pixel also has that RGB color. */
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-          if(stats->bits < 8) stats->bits = 8; /*PNG has no alphachannel modes with less than 8-bit per channel*/
-        }
-      }
-
-      if(!numcolors_done) {
-        if(!color_tree_has(&tree, r, g, b, a)) {
-          error = color_tree_add(&tree, r, g, b, a, stats->numcolors);
-          if(error) goto cleanup;
-          if(stats->numcolors < 256) {
-            unsigned char* p = stats->palette;
-            unsigned n = stats->numcolors;
-            p[n * 4 + 0] = r;
-            p[n * 4 + 1] = g;
-            p[n * 4 + 2] = b;
-            p[n * 4 + 3] = a;
-          }
-          ++stats->numcolors;
-          numcolors_done = stats->numcolors >= maxnumcolors;
-        }
-      }
-
-      if(alpha_done && numcolors_done && colored_done && bits_done) break;
-    }
-
-    if(stats->key && !stats->alpha) {
-      for(i = 0; i != numpixels; ++i) {
-        getPixelColorRGBA8(&r, &g, &b, &a, in, i, mode_in);
-        if(a != 0 && r == stats->key_r && g == stats->key_g && b == stats->key_b) {
-          /* Color key cannot be used if an opaque pixel also has that RGB color. */
-          stats->alpha = 1;
-          stats->key = 0;
-          alpha_done = 1;
-          if(stats->bits < 8) stats->bits = 8; /*PNG has no alphachannel modes with less than 8-bit per channel*/
-        }
-      }
-    }
-
-    /*make the stats's key always 16-bit for consistency - repeat each byte twice*/
-    stats->key_r += (stats->key_r << 8);
-    stats->key_g += (stats->key_g << 8);
-    stats->key_b += (stats->key_b << 8);
-  }
-
-cleanup:
-  color_tree_cleanup(&tree);
-  return error;
-}
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-/*Adds a single color to the color stats. The stats must already have been inited. The color must be given as 16-bit
-(with 2 bytes repeating for 8-bit and 65535 for opaque alpha channel). This function is expensive, do not call it for
-all pixels of an image but only for a few additional values. */
-static unsigned lodepng_color_stats_add(LodePNGColorStats* stats,
-                                        unsigned r, unsigned g, unsigned b, unsigned a) {
-  unsigned error = 0;
-  unsigned char image[8];
-  LodePNGColorMode mode;
-  lodepng_color_mode_init(&mode);
-  image[0] = r >> 8; image[1] = r; image[2] = g >> 8; image[3] = g;
-  image[4] = b >> 8; image[5] = b; image[6] = a >> 8; image[7] = a;
-  mode.bitdepth = 16;
-  mode.colortype = LCT_RGBA;
-  error = lodepng_compute_color_stats(stats, image, 1, 1, &mode);
-  lodepng_color_mode_cleanup(&mode);
-  return error;
-}
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-/*Computes a minimal PNG color model that can contain all colors as indicated by the stats.
-The stats should be computed with lodepng_compute_color_stats.
-mode_in is raw color profile of the image the stats were computed on, to copy palette order from when relevant.
-Minimal PNG color model means the color type and bit depth that gives smallest amount of bits in the output image,
-e.g. gray if only grayscale pixels, palette if less than 256 colors, color key if only single transparent color, ...
-This is used if auto_convert is enabled (it is by default).
-*/
-static unsigned auto_choose_color(LodePNGColorMode* mode_out,
-                                  const LodePNGColorMode* mode_in,
-                                  const LodePNGColorStats* stats) {
-  unsigned error = 0;
-  unsigned palettebits;
-  size_t i, n;
-  size_t numpixels = stats->numpixels;
-  unsigned palette_ok, gray_ok;
-
-  unsigned alpha = stats->alpha;
-  unsigned key = stats->key;
-  unsigned bits = stats->bits;
-
-  mode_out->key_defined = 0;
-
-  if(key && numpixels <= 16) {
-    alpha = 1; /*too few pixels to justify tRNS chunk overhead*/
-    key = 0;
-    if(bits < 8) bits = 8; /*PNG has no alphachannel modes with less than 8-bit per channel*/
-  }
-
-  gray_ok = !stats->colored;
-  if(!stats->allow_greyscale) gray_ok = 0;
-  if(!gray_ok && bits < 8) bits = 8;
-
-  n = stats->numcolors;
-  palettebits = n <= 2 ? 1 : (n <= 4 ? 2 : (n <= 16 ? 4 : 8));
-  palette_ok = n <= 256 && bits <= 8 && n != 0; /*n==0 means likely numcolors wasn't computed*/
-  if(numpixels < n * 2) palette_ok = 0; /*don't add palette overhead if image has only a few pixels*/
-  if(gray_ok && !alpha && bits <= palettebits) palette_ok = 0; /*gray is less overhead*/
-  if(!stats->allow_palette) palette_ok = 0;
-
-  if(palette_ok) {
-    const unsigned char* p = stats->palette;
-    lodepng_palette_clear(mode_out); /*remove potential earlier palette*/
-    for(i = 0; i != stats->numcolors; ++i) {
-      error = lodepng_palette_add(mode_out, p[i * 4 + 0], p[i * 4 + 1], p[i * 4 + 2], p[i * 4 + 3]);
-      if(error) break;
-    }
-
-    mode_out->colortype = LCT_PALETTE;
-    mode_out->bitdepth = palettebits;
-
-    if(mode_in->colortype == LCT_PALETTE && mode_in->palettesize >= mode_out->palettesize
-        && mode_in->bitdepth == mode_out->bitdepth) {
-      /*If input should have same palette colors, keep original to preserve its order and prevent conversion*/
-      lodepng_color_mode_cleanup(mode_out); /*clears palette, keeps the above set colortype and bitdepth fields as-is*/
-      lodepng_color_mode_copy(mode_out, mode_in);
-    }
-  } else /*8-bit or 16-bit per channel*/ {
-    mode_out->bitdepth = bits;
-    mode_out->colortype = alpha ? (gray_ok ? LCT_GREY_ALPHA : LCT_RGBA)
-                                : (gray_ok ? LCT_GREY : LCT_RGB);
-    if(key) {
-      unsigned mask = (1u << mode_out->bitdepth) - 1u; /*stats always uses 16-bit, mask converts it*/
-      mode_out->key_r = stats->key_r & mask;
-      mode_out->key_g = stats->key_g & mask;
-      mode_out->key_b = stats->key_b & mask;
-      mode_out->key_defined = 1;
-    }
-  }
-
-  return error;
-}
-
-#endif /* #ifdef LODEPNG_COMPILE_ENCODER */
-
-/*
-Paeth predictor, used by PNG filter type 4
-The parameters are of type short, but should come from unsigned chars, the shorts
-are only needed to make the paeth calculation correct.
-*/
-static unsigned char paethPredictor(short a, short b, short c) {
-  short pa = LODEPNG_ABS(b - c);
-  short pb = LODEPNG_ABS(a - c);
-  short pc = LODEPNG_ABS(a + b - c - c);
-  /* return input value associated with smallest of pa, pb, pc (with certain priority if equal) */
-  if(pb < pa) { a = b; pa = pb; }
-  return (pc < pa) ? c : a;
-}
-
-/*shared values used by multiple Adam7 related functions*/
-
-static const unsigned ADAM7_IX[7] = { 0, 4, 0, 2, 0, 1, 0 }; /*x start values*/
-static const unsigned ADAM7_IY[7] = { 0, 0, 4, 0, 2, 0, 1 }; /*y start values*/
-static const unsigned ADAM7_DX[7] = { 8, 8, 4, 4, 2, 2, 1 }; /*x delta values*/
-static const unsigned ADAM7_DY[7] = { 8, 8, 8, 4, 4, 2, 2 }; /*y delta values*/
-
-/*
-Outputs various dimensions and positions in the image related to the Adam7 reduced images.
-passw: output containing the width of the 7 passes
-passh: output containing the height of the 7 passes
-filter_passstart: output containing the index of the start and end of each
- reduced image with filter bytes
-padded_passstart output containing the index of the start and end of each
- reduced image when without filter bytes but with padded scanlines
-passstart: output containing the index of the start and end of each reduced
- image without padding between scanlines, but still padding between the images
-w, h: width and height of non-interlaced image
-bpp: bits per pixel
-"padded" is only relevant if bpp is less than 8 and a scanline or image does not
- end at a full byte
-*/
-static void Adam7_getpassvalues(unsigned passw[7], unsigned passh[7], size_t filter_passstart[8],
-                                size_t padded_passstart[8], size_t passstart[8], unsigned w, unsigned h, unsigned bpp) {
-  /*the passstart values have 8 values: the 8th one indicates the byte after the end of the 7th (= last) pass*/
-  unsigned i;
-
-  /*calculate width and height in pixels of each pass*/
-  for(i = 0; i != 7; ++i) {
-    passw[i] = (w + ADAM7_DX[i] - ADAM7_IX[i] - 1) / ADAM7_DX[i];
-    passh[i] = (h + ADAM7_DY[i] - ADAM7_IY[i] - 1) / ADAM7_DY[i];
-    if(passw[i] == 0) passh[i] = 0;
-    if(passh[i] == 0) passw[i] = 0;
-  }
-
-  filter_passstart[0] = padded_passstart[0] = passstart[0] = 0;
-  for(i = 0; i != 7; ++i) {
-    /*if passw[i] is 0, it's 0 bytes, not 1 (no filtertype-byte)*/
-    filter_passstart[i + 1] = filter_passstart[i]
-                            + ((passw[i] && passh[i]) ? passh[i] * (1u + (passw[i] * bpp + 7u) / 8u) : 0);
-    /*bits padded if needed to fill full byte at end of each scanline*/
-    padded_passstart[i + 1] = padded_passstart[i] + passh[i] * ((passw[i] * bpp + 7u) / 8u);
-    /*only padded at end of reduced image*/
-    passstart[i + 1] = passstart[i] + (passh[i] * passw[i] * bpp + 7u) / 8u;
-  }
-}
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / PNG Decoder                                                            / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-/*read the information from the header and store it in the LodePNGInfo. return value is error*/
-unsigned lodepng_inspect(unsigned* w, unsigned* h, LodePNGState* state,
-                         const unsigned char* in, size_t insize) {
-  unsigned width, height;
-  LodePNGInfo* info = &state->info_png;
-  if(insize == 0 || in == 0) {
-    CERROR_RETURN_ERROR(state->error, 48); /*error: the given data is empty*/
-  }
-  if(insize < 33) {
-    CERROR_RETURN_ERROR(state->error, 27); /*error: the data length is smaller than the length of a PNG header*/
-  }
-
-  /*when decoding a new PNG image, make sure all parameters created after previous decoding are reset*/
-  /* TODO: remove this. One should use a new LodePNGState for new sessions */
-  lodepng_info_cleanup(info);
-  lodepng_info_init(info);
-
-  if(in[0] != 137 || in[1] != 80 || in[2] != 78 || in[3] != 71
-     || in[4] != 13 || in[5] != 10 || in[6] != 26 || in[7] != 10) {
-    CERROR_RETURN_ERROR(state->error, 28); /*error: the first 8 bytes are not the correct PNG signature*/
-  }
-  if(lodepng_chunk_length(in + 8) != 13) {
-    CERROR_RETURN_ERROR(state->error, 94); /*error: header size must be 13 bytes*/
-  }
-  if(!lodepng_chunk_type_equals(in + 8, "IHDR")) {
-    CERROR_RETURN_ERROR(state->error, 29); /*error: it doesn't start with a IHDR chunk!*/
-  }
-
-  /*read the values given in the header*/
-  width = lodepng_read32bitInt(&in[16]);
-  height = lodepng_read32bitInt(&in[20]);
-  /*TODO: remove the undocumented feature that allows to give null pointers to width or height*/
-  if(w) *w = width;
-  if(h) *h = height;
-  info->color.bitdepth = in[24];
-  info->color.colortype = (LodePNGColorType)in[25];
-  info->compression_method = in[26];
-  info->filter_method = in[27];
-  info->interlace_method = in[28];
-
-  /*errors returned only after the parsing so other values are still output*/
-
-  /*error: invalid image size*/
-  if(width == 0 || height == 0) CERROR_RETURN_ERROR(state->error, 93);
-  /*error: invalid colortype or bitdepth combination*/
-  state->error = checkColorValidity(info->color.colortype, info->color.bitdepth);
-  if(state->error) return state->error;
-  /*error: only compression method 0 is allowed in the specification*/
-  if(info->compression_method != 0) CERROR_RETURN_ERROR(state->error, 32);
-  /*error: only filter method 0 is allowed in the specification*/
-  if(info->filter_method != 0) CERROR_RETURN_ERROR(state->error, 33);
-  /*error: only interlace methods 0 and 1 exist in the specification*/
-  if(info->interlace_method > 1) CERROR_RETURN_ERROR(state->error, 34);
-
-  if(!state->decoder.ignore_crc) {
-    unsigned CRC = lodepng_read32bitInt(&in[29]);
-    unsigned checksum = lodepng_crc32(&in[12], 17);
-    if(CRC != checksum) {
-      CERROR_RETURN_ERROR(state->error, 57); /*invalid CRC*/
-    }
-  }
-
-  return state->error;
-}
-
-static unsigned unfilterScanline(unsigned char* recon, const unsigned char* scanline, const unsigned char* precon,
-                                 size_t bytewidth, unsigned char filterType, size_t length) {
-  /*
-  For PNG filter method 0
-  unfilter a PNG image scanline by scanline. when the pixels are smaller than 1 byte,
-  the filter works byte per byte (bytewidth = 1)
-  precon is the previous unfiltered scanline, recon the result, scanline the current one
-  the incoming scanlines do NOT include the filtertype byte, that one is given in the parameter filterType instead
-  recon and scanline MAY be the same memory address! precon must be disjoint.
-  */
-
-  size_t i;
-  switch(filterType) {
-    case 0:
-      for(i = 0; i != length; ++i) recon[i] = scanline[i];
-      break;
-    case 1: {
-      size_t j = 0;
-      for(i = 0; i != bytewidth; ++i) recon[i] = scanline[i];
-      for(i = bytewidth; i != length; ++i, ++j) recon[i] = scanline[i] + recon[j];
-      break;
-    }
-    case 2:
-      if(precon) {
-        for(i = 0; i != length; ++i) recon[i] = scanline[i] + precon[i];
-      } else {
-        for(i = 0; i != length; ++i) recon[i] = scanline[i];
-      }
-      break;
-    case 3:
-      if(precon) {
-        size_t j = 0;
-        for(i = 0; i != bytewidth; ++i) recon[i] = scanline[i] + (precon[i] >> 1u);
-        /* Unroll independent paths of this predictor. A 6x and 8x version is also possible but that adds
-        too much code. Whether this speeds up anything depends on compiler and settings. */
-        if(bytewidth >= 4) {
-          for(; i + 3 < length; i += 4, j += 4) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1], s2 = scanline[i + 2], s3 = scanline[i + 3];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1], r2 = recon[j + 2], r3 = recon[j + 3];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1], p2 = precon[i + 2], p3 = precon[i + 3];
-            recon[i + 0] = s0 + ((r0 + p0) >> 1u);
-            recon[i + 1] = s1 + ((r1 + p1) >> 1u);
-            recon[i + 2] = s2 + ((r2 + p2) >> 1u);
-            recon[i + 3] = s3 + ((r3 + p3) >> 1u);
-          }
-        } else if(bytewidth >= 3) {
-          for(; i + 2 < length; i += 3, j += 3) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1], s2 = scanline[i + 2];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1], r2 = recon[j + 2];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1], p2 = precon[i + 2];
-            recon[i + 0] = s0 + ((r0 + p0) >> 1u);
-            recon[i + 1] = s1 + ((r1 + p1) >> 1u);
-            recon[i + 2] = s2 + ((r2 + p2) >> 1u);
-          }
-        } else if(bytewidth >= 2) {
-          for(; i + 1 < length; i += 2, j += 2) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1];
-            recon[i + 0] = s0 + ((r0 + p0) >> 1u);
-            recon[i + 1] = s1 + ((r1 + p1) >> 1u);
-          }
-        }
-        for(; i != length; ++i, ++j) recon[i] = scanline[i] + ((recon[j] + precon[i]) >> 1u);
-      } else {
-        size_t j = 0;
-        for(i = 0; i != bytewidth; ++i) recon[i] = scanline[i];
-        for(i = bytewidth; i != length; ++i, ++j) recon[i] = scanline[i] + (recon[j] >> 1u);
-      }
-      break;
-    case 4:
-      if(precon) {
-        size_t j = 0;
-        for(i = 0; i != bytewidth; ++i) {
-          recon[i] = (scanline[i] + precon[i]); /*paethPredictor(0, precon[i], 0) is always precon[i]*/
-        }
-
-        /* Unroll independent paths of the paeth predictor. A 6x and 8x version is also possible but that
-        adds too much code. Whether this speeds up anything depends on compiler and settings. */
-        if(bytewidth >= 4) {
-          for(; i + 3 < length; i += 4, j += 4) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1], s2 = scanline[i + 2], s3 = scanline[i + 3];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1], r2 = recon[j + 2], r3 = recon[j + 3];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1], p2 = precon[i + 2], p3 = precon[i + 3];
-            unsigned char q0 = precon[j + 0], q1 = precon[j + 1], q2 = precon[j + 2], q3 = precon[j + 3];
-            recon[i + 0] = s0 + paethPredictor(r0, p0, q0);
-            recon[i + 1] = s1 + paethPredictor(r1, p1, q1);
-            recon[i + 2] = s2 + paethPredictor(r2, p2, q2);
-            recon[i + 3] = s3 + paethPredictor(r3, p3, q3);
-          }
-        } else if(bytewidth >= 3) {
-          for(; i + 2 < length; i += 3, j += 3) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1], s2 = scanline[i + 2];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1], r2 = recon[j + 2];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1], p2 = precon[i + 2];
-            unsigned char q0 = precon[j + 0], q1 = precon[j + 1], q2 = precon[j + 2];
-            recon[i + 0] = s0 + paethPredictor(r0, p0, q0);
-            recon[i + 1] = s1 + paethPredictor(r1, p1, q1);
-            recon[i + 2] = s2 + paethPredictor(r2, p2, q2);
-          }
-        } else if(bytewidth >= 2) {
-          for(; i + 1 < length; i += 2, j += 2) {
-            unsigned char s0 = scanline[i + 0], s1 = scanline[i + 1];
-            unsigned char r0 = recon[j + 0], r1 = recon[j + 1];
-            unsigned char p0 = precon[i + 0], p1 = precon[i + 1];
-            unsigned char q0 = precon[j + 0], q1 = precon[j + 1];
-            recon[i + 0] = s0 + paethPredictor(r0, p0, q0);
-            recon[i + 1] = s1 + paethPredictor(r1, p1, q1);
-          }
-        }
-
-        for(; i != length; ++i, ++j) {
-          recon[i] = (scanline[i] + paethPredictor(recon[i - bytewidth], precon[i], precon[j]));
-        }
-      } else {
-        size_t j = 0;
-        for(i = 0; i != bytewidth; ++i) {
-          recon[i] = scanline[i];
-        }
-        for(i = bytewidth; i != length; ++i, ++j) {
-          /*paethPredictor(recon[i - bytewidth], 0, 0) is always recon[i - bytewidth]*/
-          recon[i] = (scanline[i] + recon[j]);
-        }
-      }
-      break;
-    default: return 36; /*error: invalid filter type given*/
-  }
-  return 0;
-}
-
-static unsigned unfilter(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) {
-  /*
-  For PNG filter method 0
-  this function unfilters a single image (e.g. without interlacing this is called once, with Adam7 seven times)
-  out must have enough bytes allocated already, in must have the scanlines + 1 filtertype byte per scanline
-  w and h are image dimensions or dimensions of reduced image, bpp is bits per pixel
-  in and out are allowed to be the same memory address (but aren't the same size since in has the extra filter bytes)
-  */
-
-  unsigned y;
-  unsigned char* prevline = 0;
-
-  /*bytewidth is used for filtering, is 1 when bpp < 8, number of bytes per pixel otherwise*/
-  size_t bytewidth = (bpp + 7u) / 8u;
-  /*the width of a scanline in bytes, not including the filter type*/
-  size_t linebytes = lodepng_get_raw_size_idat(w, 1, bpp) - 1u;
-
-  for(y = 0; y < h; ++y) {
-    size_t outindex = linebytes * y;
-    size_t inindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/
-    unsigned char filterType = in[inindex];
-
-    CERROR_TRY_RETURN(unfilterScanline(&out[outindex], &in[inindex + 1], prevline, bytewidth, filterType, linebytes));
-
-    prevline = &out[outindex];
-  }
-
-  return 0;
-}
-
-/*
-in: Adam7 interlaced image, with no padding bits between scanlines, but between
- reduced images so that each reduced image starts at a byte.
-out: the same pixels, but re-ordered so that they're now a non-interlaced image with size w*h
-bpp: bits per pixel
-out has the following size in bits: w * h * bpp.
-in is possibly bigger due to padding bits between reduced images.
-out must be big enough AND must be 0 everywhere if bpp < 8 in the current implementation
-(because that's likely a little bit faster)
-NOTE: comments about padding bits are only relevant if bpp < 8
-*/
-static void Adam7_deinterlace(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) {
-  unsigned passw[7], passh[7];
-  size_t filter_passstart[8], padded_passstart[8], passstart[8];
-  unsigned i;
-
-  Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp);
-
-  if(bpp >= 8) {
-    for(i = 0; i != 7; ++i) {
-      unsigned x, y, b;
-      size_t bytewidth = bpp / 8u;
-      for(y = 0; y < passh[i]; ++y)
-      for(x = 0; x < passw[i]; ++x) {
-        size_t pixelinstart = passstart[i] + (y * passw[i] + x) * bytewidth;
-        size_t pixeloutstart = ((ADAM7_IY[i] + (size_t)y * ADAM7_DY[i]) * (size_t)w
-                             + ADAM7_IX[i] + (size_t)x * ADAM7_DX[i]) * bytewidth;
-        for(b = 0; b < bytewidth; ++b) {
-          out[pixeloutstart + b] = in[pixelinstart + b];
-        }
-      }
-    }
-  } else /*bpp < 8: Adam7 with pixels < 8 bit is a bit trickier: with bit pointers*/ {
-    for(i = 0; i != 7; ++i) {
-      unsigned x, y, b;
-      unsigned ilinebits = bpp * passw[i];
-      unsigned olinebits = bpp * w;
-      size_t obp, ibp; /*bit pointers (for out and in buffer)*/
-      for(y = 0; y < passh[i]; ++y)
-      for(x = 0; x < passw[i]; ++x) {
-        ibp = (8 * passstart[i]) + (y * ilinebits + x * bpp);
-        obp = (ADAM7_IY[i] + (size_t)y * ADAM7_DY[i]) * olinebits + (ADAM7_IX[i] + (size_t)x * ADAM7_DX[i]) * bpp;
-        for(b = 0; b < bpp; ++b) {
-          unsigned char bit = readBitFromReversedStream(&ibp, in);
-          setBitOfReversedStream(&obp, out, bit);
-        }
-      }
-    }
-  }
-}
-
-static void removePaddingBits(unsigned char* out, const unsigned char* in,
-                              size_t olinebits, size_t ilinebits, unsigned h) {
-  /*
-  After filtering there are still padding bits if scanlines have non multiple of 8 bit amounts. They need
-  to be removed (except at last scanline of (Adam7-reduced) image) before working with pure image buffers
-  for the Adam7 code, the color convert code and the output to the user.
-  in and out are allowed to be the same buffer, in may also be higher but still overlapping; in must
-  have >= ilinebits*h bits, out must have >= olinebits*h bits, olinebits must be <= ilinebits
-  also used to move bits after earlier such operations happened, e.g. in a sequence of reduced images from Adam7
-  only useful if (ilinebits - olinebits) is a value in the range 1..7
-  */
-  unsigned y;
-  size_t diff = ilinebits - olinebits;
-  size_t ibp = 0, obp = 0; /*input and output bit pointers*/
-  for(y = 0; y < h; ++y) {
-    size_t x;
-    for(x = 0; x < olinebits; ++x) {
-      unsigned char bit = readBitFromReversedStream(&ibp, in);
-      setBitOfReversedStream(&obp, out, bit);
-    }
-    ibp += diff;
-  }
-}
-
-/*out must be buffer big enough to contain full image, and in must contain the full decompressed data from
-the IDAT chunks (with filter index bytes and possible padding bits)
-return value is error*/
-static unsigned postProcessScanlines(unsigned char* out, unsigned char* in,
-                                     unsigned w, unsigned h, const LodePNGInfo* info_png) {
-  /*
-  This function converts the filtered-padded-interlaced data into pure 2D image buffer with the PNG's colortype.
-  Steps:
-  *) if no Adam7: 1) unfilter 2) remove padding bits (= possible extra bits per scanline if bpp < 8)
-  *) if adam7: 1) 7x unfilter 2) 7x remove padding bits 3) Adam7_deinterlace
-  NOTE: the in buffer will be overwritten with intermediate data!
-  */
-  unsigned bpp = lodepng_get_bpp(&info_png->color);
-  if(bpp == 0) return 31; /*error: invalid colortype*/
-
-  if(info_png->interlace_method == 0) {
-    if(bpp < 8 && w * bpp != ((w * bpp + 7u) / 8u) * 8u) {
-      CERROR_TRY_RETURN(unfilter(in, in, w, h, bpp));
-      removePaddingBits(out, in, w * bpp, ((w * bpp + 7u) / 8u) * 8u, h);
-    }
-    /*we can immediately filter into the out buffer, no other steps needed*/
-    else CERROR_TRY_RETURN(unfilter(out, in, w, h, bpp));
-  } else /*interlace_method is 1 (Adam7)*/ {
-    unsigned passw[7], passh[7]; size_t filter_passstart[8], padded_passstart[8], passstart[8];
-    unsigned i;
-
-    Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp);
-
-    for(i = 0; i != 7; ++i) {
-      CERROR_TRY_RETURN(unfilter(&in[padded_passstart[i]], &in[filter_passstart[i]], passw[i], passh[i], bpp));
-      /*TODO: possible efficiency improvement: if in this reduced image the bits fit nicely in 1 scanline,
-      move bytes instead of bits or move not at all*/
-      if(bpp < 8) {
-        /*remove padding bits in scanlines; after this there still may be padding
-        bits between the different reduced images: each reduced image still starts nicely at a byte*/
-        removePaddingBits(&in[passstart[i]], &in[padded_passstart[i]], passw[i] * bpp,
-                          ((passw[i] * bpp + 7u) / 8u) * 8u, passh[i]);
-      }
-    }
-
-    Adam7_deinterlace(out, in, w, h, bpp);
-  }
-
-  return 0;
-}
-
-static unsigned readChunk_PLTE(LodePNGColorMode* color, const unsigned char* data, size_t chunkLength) {
-  unsigned pos = 0, i;
-  color->palettesize = chunkLength / 3u;
-  if(color->palettesize == 0 || color->palettesize > 256) return 38; /*error: palette too small or big*/
-  lodepng_color_mode_alloc_palette(color);
-  if(!color->palette && color->palettesize) {
-    color->palettesize = 0;
-    return 83; /*alloc fail*/
-  }
-
-  for(i = 0; i != color->palettesize; ++i) {
-    color->palette[4 * i + 0] = data[pos++]; /*R*/
-    color->palette[4 * i + 1] = data[pos++]; /*G*/
-    color->palette[4 * i + 2] = data[pos++]; /*B*/
-    color->palette[4 * i + 3] = 255; /*alpha*/
-  }
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_tRNS(LodePNGColorMode* color, const unsigned char* data, size_t chunkLength) {
-  unsigned i;
-  if(color->colortype == LCT_PALETTE) {
-    /*error: more alpha values given than there are palette entries*/
-    if(chunkLength > color->palettesize) return 39;
-
-    for(i = 0; i != chunkLength; ++i) color->palette[4 * i + 3] = data[i];
-  } else if(color->colortype == LCT_GREY) {
-    /*error: this chunk must be 2 bytes for grayscale image*/
-    if(chunkLength != 2) return 30;
-
-    color->key_defined = 1;
-    color->key_r = color->key_g = color->key_b = 256u * data[0] + data[1];
-  } else if(color->colortype == LCT_RGB) {
-    /*error: this chunk must be 6 bytes for RGB image*/
-    if(chunkLength != 6) return 41;
-
-    color->key_defined = 1;
-    color->key_r = 256u * data[0] + data[1];
-    color->key_g = 256u * data[2] + data[3];
-    color->key_b = 256u * data[4] + data[5];
-  }
-  else return 42; /*error: tRNS chunk not allowed for other color models*/
-
-  return 0; /* OK */
-}
-
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-/*background color chunk (bKGD)*/
-static unsigned readChunk_bKGD(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(info->color.colortype == LCT_PALETTE) {
-    /*error: this chunk must be 1 byte for indexed color image*/
-    if(chunkLength != 1) return 43;
-
-    /*error: invalid palette index, or maybe this chunk appeared before PLTE*/
-    if(data[0] >= info->color.palettesize) return 103;
-
-    info->background_defined = 1;
-    info->background_r = info->background_g = info->background_b = data[0];
-  } else if(info->color.colortype == LCT_GREY || info->color.colortype == LCT_GREY_ALPHA) {
-    /*error: this chunk must be 2 bytes for grayscale image*/
-    if(chunkLength != 2) return 44;
-
-    /*the values are truncated to bitdepth in the PNG file*/
-    info->background_defined = 1;
-    info->background_r = info->background_g = info->background_b = 256u * data[0] + data[1];
-  } else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_RGBA) {
-    /*error: this chunk must be 6 bytes for grayscale image*/
-    if(chunkLength != 6) return 45;
-
-    /*the values are truncated to bitdepth in the PNG file*/
-    info->background_defined = 1;
-    info->background_r = 256u * data[0] + data[1];
-    info->background_g = 256u * data[2] + data[3];
-    info->background_b = 256u * data[4] + data[5];
-  }
-
-  return 0; /* OK */
-}
-
-/*text chunk (tEXt)*/
-static unsigned readChunk_tEXt(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  unsigned error = 0;
-  char *key = 0, *str = 0;
-
-  while(!error) /*not really a while loop, only used to break on error*/ {
-    unsigned length, string2_begin;
-
-    length = 0;
-    while(length < chunkLength && data[length] != 0) ++length;
-    /*even though it's not allowed by the standard, no error is thrown if
-    there's no null termination char, if the text is empty*/
-    if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/
-
-    key = (char*)lodepng_malloc(length + 1);
-    if(!key) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(key, data, length);
-    key[length] = 0;
-
-    string2_begin = length + 1; /*skip keyword null terminator*/
-
-    length = (unsigned)(chunkLength < string2_begin ? 0 : chunkLength - string2_begin);
-    str = (char*)lodepng_malloc(length + 1);
-    if(!str) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(str, data + string2_begin, length);
-    str[length] = 0;
-
-    error = lodepng_add_text(info, key, str);
-
-    break;
-  }
-
-  lodepng_free(key);
-  lodepng_free(str);
-
-  return error;
-}
-
-/*compressed text chunk (zTXt)*/
-static unsigned readChunk_zTXt(LodePNGInfo* info, const LodePNGDecoderSettings* decoder,
-                               const unsigned char* data, size_t chunkLength) {
-  unsigned error = 0;
-
-  /*copy the object to change parameters in it*/
-  LodePNGDecompressSettings zlibsettings = decoder->zlibsettings;
-
-  unsigned length, string2_begin;
-  char *key = 0;
-  unsigned char* str = 0;
-  size_t size = 0;
-
-  while(!error) /*not really a while loop, only used to break on error*/ {
-    for(length = 0; length < chunkLength && data[length] != 0; ++length) ;
-    if(length + 2 >= chunkLength) CERROR_BREAK(error, 75); /*no null termination, corrupt?*/
-    if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/
-
-    key = (char*)lodepng_malloc(length + 1);
-    if(!key) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(key, data, length);
-    key[length] = 0;
-
-    if(data[length + 1] != 0) CERROR_BREAK(error, 72); /*the 0 byte indicating compression must be 0*/
-
-    string2_begin = length + 2;
-    if(string2_begin > chunkLength) CERROR_BREAK(error, 75); /*no null termination, corrupt?*/
-
-    length = (unsigned)chunkLength - string2_begin;
-    zlibsettings.max_output_size = decoder->max_text_size;
-    /*will fail if zlib error, e.g. if length is too small*/
-    error = zlib_decompress(&str, &size, 0, &data[string2_begin],
-                            length, &zlibsettings);
-    /*error: compressed text larger than  decoder->max_text_size*/
-    if(error && size > zlibsettings.max_output_size) error = 112;
-    if(error) break;
-    error = lodepng_add_text_sized(info, key, (char*)str, size);
-    break;
-  }
-
-  lodepng_free(key);
-  lodepng_free(str);
-
-  return error;
-}
-
-/*international text chunk (iTXt)*/
-static unsigned readChunk_iTXt(LodePNGInfo* info, const LodePNGDecoderSettings* decoder,
-                               const unsigned char* data, size_t chunkLength) {
-  unsigned error = 0;
-  unsigned i;
-
-  /*copy the object to change parameters in it*/
-  LodePNGDecompressSettings zlibsettings = decoder->zlibsettings;
-
-  unsigned length, begin, compressed;
-  char *key = 0, *langtag = 0, *transkey = 0;
-
-  while(!error) /*not really a while loop, only used to break on error*/ {
-    /*Quick check if the chunk length isn't too small. Even without check
-    it'd still fail with other error checks below if it's too short. This just gives a different error code.*/
-    if(chunkLength < 5) CERROR_BREAK(error, 30); /*iTXt chunk too short*/
-
-    /*read the key*/
-    for(length = 0; length < chunkLength && data[length] != 0; ++length) ;
-    if(length + 3 >= chunkLength) CERROR_BREAK(error, 75); /*no null termination char, corrupt?*/
-    if(length < 1 || length > 79) CERROR_BREAK(error, 89); /*keyword too short or long*/
-
-    key = (char*)lodepng_malloc(length + 1);
-    if(!key) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(key, data, length);
-    key[length] = 0;
-
-    /*read the compression method*/
-    compressed = data[length + 1];
-    if(data[length + 2] != 0) CERROR_BREAK(error, 72); /*the 0 byte indicating compression must be 0*/
-
-    /*even though it's not allowed by the standard, no error is thrown if
-    there's no null termination char, if the text is empty for the next 3 texts*/
-
-    /*read the langtag*/
-    begin = length + 3;
-    length = 0;
-    for(i = begin; i < chunkLength && data[i] != 0; ++i) ++length;
-
-    langtag = (char*)lodepng_malloc(length + 1);
-    if(!langtag) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(langtag, data + begin, length);
-    langtag[length] = 0;
-
-    /*read the transkey*/
-    begin += length + 1;
-    length = 0;
-    for(i = begin; i < chunkLength && data[i] != 0; ++i) ++length;
-
-    transkey = (char*)lodepng_malloc(length + 1);
-    if(!transkey) CERROR_BREAK(error, 83); /*alloc fail*/
-
-    lodepng_memcpy(transkey, data + begin, length);
-    transkey[length] = 0;
-
-    /*read the actual text*/
-    begin += length + 1;
-
-    length = (unsigned)chunkLength < begin ? 0 : (unsigned)chunkLength - begin;
-
-    if(compressed) {
-      unsigned char* str = 0;
-      size_t size = 0;
-      zlibsettings.max_output_size = decoder->max_text_size;
-      /*will fail if zlib error, e.g. if length is too small*/
-      error = zlib_decompress(&str, &size, 0, &data[begin],
-                              length, &zlibsettings);
-      /*error: compressed text larger than  decoder->max_text_size*/
-      if(error && size > zlibsettings.max_output_size) error = 112;
-      if(!error) error = lodepng_add_itext_sized(info, key, langtag, transkey, (char*)str, size);
-      lodepng_free(str);
-    } else {
-      error = lodepng_add_itext_sized(info, key, langtag, transkey, (char*)(data + begin), length);
-    }
-
-    break;
-  }
-
-  lodepng_free(key);
-  lodepng_free(langtag);
-  lodepng_free(transkey);
-
-  return error;
-}
-
-static unsigned readChunk_tIME(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(chunkLength != 7) return 73; /*invalid tIME chunk size*/
-
-  info->time_defined = 1;
-  info->time.year = 256u * data[0] + data[1];
-  info->time.month = data[2];
-  info->time.day = data[3];
-  info->time.hour = data[4];
-  info->time.minute = data[5];
-  info->time.second = data[6];
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_pHYs(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(chunkLength != 9) return 74; /*invalid pHYs chunk size*/
-
-  info->phys_defined = 1;
-  info->phys_x = 16777216u * data[0] + 65536u * data[1] + 256u * data[2] + data[3];
-  info->phys_y = 16777216u * data[4] + 65536u * data[5] + 256u * data[6] + data[7];
-  info->phys_unit = data[8];
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_gAMA(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(chunkLength != 4) return 96; /*invalid gAMA chunk size*/
-
-  info->gama_defined = 1;
-  info->gama_gamma = 16777216u * data[0] + 65536u * data[1] + 256u * data[2] + data[3];
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_cHRM(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(chunkLength != 32) return 97; /*invalid cHRM chunk size*/
-
-  info->chrm_defined = 1;
-  info->chrm_white_x = 16777216u * data[ 0] + 65536u * data[ 1] + 256u * data[ 2] + data[ 3];
-  info->chrm_white_y = 16777216u * data[ 4] + 65536u * data[ 5] + 256u * data[ 6] + data[ 7];
-  info->chrm_red_x   = 16777216u * data[ 8] + 65536u * data[ 9] + 256u * data[10] + data[11];
-  info->chrm_red_y   = 16777216u * data[12] + 65536u * data[13] + 256u * data[14] + data[15];
-  info->chrm_green_x = 16777216u * data[16] + 65536u * data[17] + 256u * data[18] + data[19];
-  info->chrm_green_y = 16777216u * data[20] + 65536u * data[21] + 256u * data[22] + data[23];
-  info->chrm_blue_x  = 16777216u * data[24] + 65536u * data[25] + 256u * data[26] + data[27];
-  info->chrm_blue_y  = 16777216u * data[28] + 65536u * data[29] + 256u * data[30] + data[31];
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_sRGB(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  if(chunkLength != 1) return 98; /*invalid sRGB chunk size (this one is never ignored)*/
-
-  info->srgb_defined = 1;
-  info->srgb_intent = data[0];
-
-  return 0; /* OK */
-}
-
-static unsigned readChunk_iCCP(LodePNGInfo* info, const LodePNGDecoderSettings* decoder,
-                               const unsigned char* data, size_t chunkLength) {
-  unsigned error = 0;
-  unsigned i;
-  size_t size = 0;
-  /*copy the object to change parameters in it*/
-  LodePNGDecompressSettings zlibsettings = decoder->zlibsettings;
-
-  unsigned length, string2_begin;
-
-  info->iccp_defined = 1;
-  if(info->iccp_name) lodepng_clear_icc(info);
-
-  for(length = 0; length < chunkLength && data[length] != 0; ++length) ;
-  if(length + 2 >= chunkLength) return 75; /*no null termination, corrupt?*/
-  if(length < 1 || length > 79) return 89; /*keyword too short or long*/
-
-  info->iccp_name = (char*)lodepng_malloc(length + 1);
-  if(!info->iccp_name) return 83; /*alloc fail*/
-
-  info->iccp_name[length] = 0;
-  for(i = 0; i != length; ++i) info->iccp_name[i] = (char)data[i];
-
-  if(data[length + 1] != 0) return 72; /*the 0 byte indicating compression must be 0*/
-
-  string2_begin = length + 2;
-  if(string2_begin > chunkLength) return 75; /*no null termination, corrupt?*/
-
-  length = (unsigned)chunkLength - string2_begin;
-  zlibsettings.max_output_size = decoder->max_icc_size;
-  error = zlib_decompress(&info->iccp_profile, &size, 0,
-                          &data[string2_begin],
-                          length, &zlibsettings);
-  /*error: ICC profile larger than  decoder->max_icc_size*/
-  if(error && size > zlibsettings.max_output_size) error = 113;
-  info->iccp_profile_size = size;
-  if(!error && !info->iccp_profile_size) error = 100; /*invalid ICC profile size*/
-  return error;
-}
-
-/*significant bits chunk (sBIT)*/
-static unsigned readChunk_sBIT(LodePNGInfo* info, const unsigned char* data, size_t chunkLength) {
-  unsigned bitdepth = (info->color.colortype == LCT_PALETTE) ? 8 : info->color.bitdepth;
-  if(info->color.colortype == LCT_GREY) {
-    /*error: this chunk must be 1 bytes for grayscale image*/
-    if(chunkLength != 1) return 114;
-    if(data[0] == 0 || data[0] > bitdepth) return 115;
-    info->sbit_defined = 1;
-    info->sbit_r = info->sbit_g = info->sbit_b = data[0]; /*setting g and b is not required, but sensible*/
-  } else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_PALETTE) {
-    /*error: this chunk must be 3 bytes for RGB and palette image*/
-    if(chunkLength != 3) return 114;
-    if(data[0] == 0 || data[1] == 0 || data[2] == 0) return 115;
-    if(data[0] > bitdepth || data[1] > bitdepth || data[2] > bitdepth) return 115;
-    info->sbit_defined = 1;
-    info->sbit_r = data[0];
-    info->sbit_g = data[1];
-    info->sbit_b = data[2];
-  } else if(info->color.colortype == LCT_GREY_ALPHA) {
-    /*error: this chunk must be 2 byte for grayscale with alpha image*/
-    if(chunkLength != 2) return 114;
-    if(data[0] == 0 || data[1] == 0) return 115;
-    if(data[0] > bitdepth || data[1] > bitdepth) return 115;
-    info->sbit_defined = 1;
-    info->sbit_r = info->sbit_g = info->sbit_b = data[0]; /*setting g and b is not required, but sensible*/
-    info->sbit_a = data[1];
-  } else if(info->color.colortype == LCT_RGBA) {
-    /*error: this chunk must be 4 bytes for grayscale image*/
-    if(chunkLength != 4) return 114;
-    if(data[0] == 0 || data[1] == 0 || data[2] == 0 || data[3] == 0) return 115;
-    if(data[0] > bitdepth || data[1] > bitdepth || data[2] > bitdepth || data[3] > bitdepth) return 115;
-    info->sbit_defined = 1;
-    info->sbit_r = data[0];
-    info->sbit_g = data[1];
-    info->sbit_b = data[2];
-    info->sbit_a = data[3];
-  }
-
-  return 0; /* OK */
-}
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-unsigned lodepng_inspect_chunk(LodePNGState* state, size_t pos,
-                               const unsigned char* in, size_t insize) {
-  const unsigned char* chunk = in + pos;
-  unsigned chunkLength;
-  const unsigned char* data;
-  unsigned unhandled = 0;
-  unsigned error = 0;
-
-  if(pos + 4 > insize) return 30;
-  chunkLength = lodepng_chunk_length(chunk);
-  if(chunkLength > 2147483647) return 63;
-  data = lodepng_chunk_data_const(chunk);
-  if(chunkLength + 12 > insize - pos) return 30;
-
-  if(lodepng_chunk_type_equals(chunk, "PLTE")) {
-    error = readChunk_PLTE(&state->info_png.color, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "tRNS")) {
-    error = readChunk_tRNS(&state->info_png.color, data, chunkLength);
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  } else if(lodepng_chunk_type_equals(chunk, "bKGD")) {
-    error = readChunk_bKGD(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "tEXt")) {
-    error = readChunk_tEXt(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "zTXt")) {
-    error = readChunk_zTXt(&state->info_png, &state->decoder, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "iTXt")) {
-    error = readChunk_iTXt(&state->info_png, &state->decoder, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "tIME")) {
-    error = readChunk_tIME(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "pHYs")) {
-    error = readChunk_pHYs(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "gAMA")) {
-    error = readChunk_gAMA(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "cHRM")) {
-    error = readChunk_cHRM(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "sRGB")) {
-    error = readChunk_sRGB(&state->info_png, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "iCCP")) {
-    error = readChunk_iCCP(&state->info_png, &state->decoder, data, chunkLength);
-  } else if(lodepng_chunk_type_equals(chunk, "sBIT")) {
-    error = readChunk_sBIT(&state->info_png, data, chunkLength);
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-  } else {
-    /* unhandled chunk is ok (is not an error) */
-    unhandled = 1;
-  }
-
-  if(!error && !unhandled && !state->decoder.ignore_crc) {
-    if(lodepng_chunk_check_crc(chunk)) return 57; /*invalid CRC*/
-  }
-
-  return error;
-}
-
-/*read a PNG, the result will be in the same color type as the PNG (hence "generic")*/
-static void decodeGeneric(unsigned char** out, unsigned* w, unsigned* h,
-                          LodePNGState* state,
-                          const unsigned char* in, size_t insize) {
-  unsigned char IEND = 0;
-  const unsigned char* chunk; /*points to beginning of next chunk*/
-  unsigned char* idat; /*the data from idat chunks, zlib compressed*/
-  size_t idatsize = 0;
-  unsigned char* scanlines = 0;
-  size_t scanlines_size = 0, expected_size = 0;
-  size_t outsize = 0;
-
-  /*for unknown chunk order*/
-  unsigned unknown = 0;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  unsigned critical_pos = 1; /*1 = after IHDR, 2 = after PLTE, 3 = after IDAT*/
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-
-  /* safe output values in case error happens */
-  *out = 0;
-  *w = *h = 0;
-
-  state->error = lodepng_inspect(w, h, state, in, insize); /*reads header and resets other parameters in state->info_png*/
-  if(state->error) return;
-
-  if(lodepng_pixel_overflow(*w, *h, &state->info_png.color, &state->info_raw)) {
-    CERROR_RETURN(state->error, 92); /*overflow possible due to amount of pixels*/
-  }
-
-  /*the input filesize is a safe upper bound for the sum of idat chunks size*/
-  idat = (unsigned char*)lodepng_malloc(insize);
-  if(!idat) CERROR_RETURN(state->error, 83); /*alloc fail*/
-
-  chunk = &in[33]; /*first byte of the first chunk after the header*/
-
-  /*loop through the chunks, ignoring unknown chunks and stopping at IEND chunk.
-  IDAT data is put at the start of the in buffer*/
-  while(!IEND && !state->error) {
-    unsigned chunkLength;
-    const unsigned char* data; /*the data in the chunk*/
-    size_t pos = (size_t)(chunk - in);
-
-    /*error: next chunk out of bounds of the in buffer*/
-    if(chunk < in || pos + 12 > insize) {
-      if(state->decoder.ignore_end) break; /*other errors may still happen though*/
-      CERROR_BREAK(state->error, 30);
-    }
-
-    /*length of the data of the chunk, excluding the 12 bytes for length, chunk type and CRC*/
-    chunkLength = lodepng_chunk_length(chunk);
-    /*error: chunk length larger than the max PNG chunk size*/
-    if(chunkLength > 2147483647) {
-      if(state->decoder.ignore_end) break; /*other errors may still happen though*/
-      CERROR_BREAK(state->error, 63);
-    }
-
-    if(pos + (size_t)chunkLength + 12 > insize || pos + (size_t)chunkLength + 12 < pos) {
-      CERROR_BREAK(state->error, 64); /*error: size of the in buffer too small to contain next chunk (or int overflow)*/
-    }
-
-    data = lodepng_chunk_data_const(chunk);
-
-    unknown = 0;
-
-    /*IDAT chunk, containing compressed image data*/
-    if(lodepng_chunk_type_equals(chunk, "IDAT")) {
-      size_t newsize;
-      if(lodepng_addofl(idatsize, chunkLength, &newsize)) CERROR_BREAK(state->error, 95);
-      if(newsize > insize) CERROR_BREAK(state->error, 95);
-      lodepng_memcpy(idat + idatsize, data, chunkLength);
-      idatsize += chunkLength;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-      critical_pos = 3;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    } else if(lodepng_chunk_type_equals(chunk, "IEND")) {
-      /*IEND chunk*/
-      IEND = 1;
-    } else if(lodepng_chunk_type_equals(chunk, "PLTE")) {
-      /*palette chunk (PLTE)*/
-      state->error = readChunk_PLTE(&state->info_png.color, data, chunkLength);
-      if(state->error) break;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-      critical_pos = 2;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    } else if(lodepng_chunk_type_equals(chunk, "tRNS")) {
-      /*palette transparency chunk (tRNS). Even though this one is an ancillary chunk , it is still compiled
-      in without 'LODEPNG_COMPILE_ANCILLARY_CHUNKS' because it contains essential color information that
-      affects the alpha channel of pixels. */
-      state->error = readChunk_tRNS(&state->info_png.color, data, chunkLength);
-      if(state->error) break;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-      /*background color chunk (bKGD)*/
-    } else if(lodepng_chunk_type_equals(chunk, "bKGD")) {
-      state->error = readChunk_bKGD(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "tEXt")) {
-      /*text chunk (tEXt)*/
-      if(state->decoder.read_text_chunks) {
-        state->error = readChunk_tEXt(&state->info_png, data, chunkLength);
-        if(state->error) break;
-      }
-    } else if(lodepng_chunk_type_equals(chunk, "zTXt")) {
-      /*compressed text chunk (zTXt)*/
-      if(state->decoder.read_text_chunks) {
-        state->error = readChunk_zTXt(&state->info_png, &state->decoder, data, chunkLength);
-        if(state->error) break;
-      }
-    } else if(lodepng_chunk_type_equals(chunk, "iTXt")) {
-      /*international text chunk (iTXt)*/
-      if(state->decoder.read_text_chunks) {
-        state->error = readChunk_iTXt(&state->info_png, &state->decoder, data, chunkLength);
-        if(state->error) break;
-      }
-    } else if(lodepng_chunk_type_equals(chunk, "tIME")) {
-      state->error = readChunk_tIME(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "pHYs")) {
-      state->error = readChunk_pHYs(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "gAMA")) {
-      state->error = readChunk_gAMA(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "cHRM")) {
-      state->error = readChunk_cHRM(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "sRGB")) {
-      state->error = readChunk_sRGB(&state->info_png, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "iCCP")) {
-      state->error = readChunk_iCCP(&state->info_png, &state->decoder, data, chunkLength);
-      if(state->error) break;
-    } else if(lodepng_chunk_type_equals(chunk, "sBIT")) {
-      state->error = readChunk_sBIT(&state->info_png, data, chunkLength);
-      if(state->error) break;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    } else /*it's not an implemented chunk type, so ignore it: skip over the data*/ {
-      /*error: unknown critical chunk (5th bit of first byte of chunk type is 0)*/
-      if(!state->decoder.ignore_critical && !lodepng_chunk_ancillary(chunk)) {
-        CERROR_BREAK(state->error, 69);
-      }
-
-      unknown = 1;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-      if(state->decoder.remember_unknown_chunks) {
-        state->error = lodepng_chunk_append(&state->info_png.unknown_chunks_data[critical_pos - 1],
-                                            &state->info_png.unknown_chunks_size[critical_pos - 1], chunk);
-        if(state->error) break;
-      }
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    }
-
-    if(!state->decoder.ignore_crc && !unknown) /*check CRC if wanted, only on known chunk types*/ {
-      if(lodepng_chunk_check_crc(chunk)) CERROR_BREAK(state->error, 57); /*invalid CRC*/
-    }
-
-    if(!IEND) chunk = lodepng_chunk_next_const(chunk, in + insize);
-  }
-
-  if(!state->error && state->info_png.color.colortype == LCT_PALETTE && !state->info_png.color.palette) {
-    state->error = 106; /* error: PNG file must have PLTE chunk if color type is palette */
-  }
-
-  if(!state->error) {
-    /*predict output size, to allocate exact size for output buffer to avoid more dynamic allocation.
-    If the decompressed size does not match the prediction, the image must be corrupt.*/
-    if(state->info_png.interlace_method == 0) {
-      size_t bpp = lodepng_get_bpp(&state->info_png.color);
-      expected_size = lodepng_get_raw_size_idat(*w, *h, bpp);
-    } else {
-      size_t bpp = lodepng_get_bpp(&state->info_png.color);
-      /*Adam-7 interlaced: expected size is the sum of the 7 sub-images sizes*/
-      expected_size = 0;
-      expected_size += lodepng_get_raw_size_idat((*w + 7) >> 3, (*h + 7) >> 3, bpp);
-      if(*w > 4) expected_size += lodepng_get_raw_size_idat((*w + 3) >> 3, (*h + 7) >> 3, bpp);
-      expected_size += lodepng_get_raw_size_idat((*w + 3) >> 2, (*h + 3) >> 3, bpp);
-      if(*w > 2) expected_size += lodepng_get_raw_size_idat((*w + 1) >> 2, (*h + 3) >> 2, bpp);
-      expected_size += lodepng_get_raw_size_idat((*w + 1) >> 1, (*h + 1) >> 2, bpp);
-      if(*w > 1) expected_size += lodepng_get_raw_size_idat((*w + 0) >> 1, (*h + 1) >> 1, bpp);
-      expected_size += lodepng_get_raw_size_idat((*w + 0), (*h + 0) >> 1, bpp);
-    }
-
-    state->error = zlib_decompress(&scanlines, &scanlines_size, expected_size, idat, idatsize, &state->decoder.zlibsettings);
-  }
-  if(!state->error && scanlines_size != expected_size) state->error = 91; /*decompressed size doesn't match prediction*/
-  lodepng_free(idat);
-
-  if(!state->error) {
-    outsize = lodepng_get_raw_size(*w, *h, &state->info_png.color);
-    *out = (unsigned char*)lodepng_malloc(outsize);
-    if(!*out) state->error = 83; /*alloc fail*/
-  }
-  if(!state->error) {
-    lodepng_memset(*out, 0, outsize);
-    state->error = postProcessScanlines(*out, scanlines, *w, *h, &state->info_png);
-  }
-  lodepng_free(scanlines);
-}
-
-unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h,
-                        LodePNGState* state,
-                        const unsigned char* in, size_t insize) {
-  *out = 0;
-  decodeGeneric(out, w, h, state, in, insize);
-  if(state->error) return state->error;
-  if(!state->decoder.color_convert || lodepng_color_mode_equal(&state->info_raw, &state->info_png.color)) {
-    /*same color type, no copying or converting of data needed*/
-    /*store the info_png color settings on the info_raw so that the info_raw still reflects what colortype
-    the raw image has to the end user*/
-    if(!state->decoder.color_convert) {
-      state->error = lodepng_color_mode_copy(&state->info_raw, &state->info_png.color);
-      if(state->error) return state->error;
-    }
-  } else { /*color conversion needed*/
-    unsigned char* data = *out;
-    size_t outsize;
-
-    /*TODO: check if this works according to the statement in the documentation: "The converter can convert
-    from grayscale input color type, to 8-bit grayscale or grayscale with alpha"*/
-    if(!(state->info_raw.colortype == LCT_RGB || state->info_raw.colortype == LCT_RGBA)
-       && !(state->info_raw.bitdepth == 8)) {
-      return 56; /*unsupported color mode conversion*/
-    }
-
-    outsize = lodepng_get_raw_size(*w, *h, &state->info_raw);
-    *out = (unsigned char*)lodepng_malloc(outsize);
-    if(!(*out)) {
-      state->error = 83; /*alloc fail*/
-    }
-    else state->error = lodepng_convert(*out, data, &state->info_raw,
-                                        &state->info_png.color, *w, *h);
-    lodepng_free(data);
-  }
-  return state->error;
-}
-
-unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in,
-                               size_t insize, LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned error;
-  LodePNGState state;
-  lodepng_state_init(&state);
-  state.info_raw.colortype = colortype;
-  state.info_raw.bitdepth = bitdepth;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  /*disable reading things that this function doesn't output*/
-  state.decoder.read_text_chunks = 0;
-  state.decoder.remember_unknown_chunks = 0;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-  error = lodepng_decode(out, w, h, &state, in, insize);
-  lodepng_state_cleanup(&state);
-  return error;
-}
-
-unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in, size_t insize) {
-  return lodepng_decode_memory(out, w, h, in, insize, LCT_RGBA, 8);
-}
-
-unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h, const unsigned char* in, size_t insize) {
-  return lodepng_decode_memory(out, w, h, in, insize, LCT_RGB, 8);
-}
-
-#ifdef LODEPNG_COMPILE_DISK
-unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename,
-                             LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned char* buffer = 0;
-  size_t buffersize;
-  unsigned error;
-  /* safe output values in case error happens */
-  *out = 0;
-  *w = *h = 0;
-  error = lodepng_load_file(&buffer, &buffersize, filename);
-  if(!error) error = lodepng_decode_memory(out, w, h, buffer, buffersize, colortype, bitdepth);
-  lodepng_free(buffer);
-  return error;
-}
-
-unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename) {
-  return lodepng_decode_file(out, w, h, filename, LCT_RGBA, 8);
-}
-
-unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h, const char* filename) {
-  return lodepng_decode_file(out, w, h, filename, LCT_RGB, 8);
-}
-#endif /*LODEPNG_COMPILE_DISK*/
-
-void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings) {
-  settings->color_convert = 1;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  settings->read_text_chunks = 1;
-  settings->remember_unknown_chunks = 0;
-  settings->max_text_size = 16777216;
-  settings->max_icc_size = 16777216; /* 16MB is much more than enough for any reasonable ICC profile */
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-  settings->ignore_crc = 0;
-  settings->ignore_critical = 0;
-  settings->ignore_end = 0;
-  lodepng_decompress_settings_init(&settings->zlibsettings);
-}
-
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER)
-
-void lodepng_state_init(LodePNGState* state) {
-#ifdef LODEPNG_COMPILE_DECODER
-  lodepng_decoder_settings_init(&state->decoder);
-#endif /*LODEPNG_COMPILE_DECODER*/
-#ifdef LODEPNG_COMPILE_ENCODER
-  lodepng_encoder_settings_init(&state->encoder);
-#endif /*LODEPNG_COMPILE_ENCODER*/
-  lodepng_color_mode_init(&state->info_raw);
-  lodepng_info_init(&state->info_png);
-  state->error = 1;
-}
-
-void lodepng_state_cleanup(LodePNGState* state) {
-  lodepng_color_mode_cleanup(&state->info_raw);
-  lodepng_info_cleanup(&state->info_png);
-}
-
-void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source) {
-  lodepng_state_cleanup(dest);
-  *dest = *source;
-  lodepng_color_mode_init(&dest->info_raw);
-  lodepng_info_init(&dest->info_png);
-  dest->error = lodepng_color_mode_copy(&dest->info_raw, &source->info_raw); if(dest->error) return;
-  dest->error = lodepng_info_copy(&dest->info_png, &source->info_png); if(dest->error) return;
-}
-
-#endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* / PNG Encoder                                                            / */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-
-static unsigned writeSignature(ucvector* out) {
-  size_t pos = out->size;
-  const unsigned char signature[] = {137, 80, 78, 71, 13, 10, 26, 10};
-  /*8 bytes PNG signature, aka the magic bytes*/
-  if(!ucvector_resize(out, out->size + 8)) return 83; /*alloc fail*/
-  lodepng_memcpy(out->data + pos, signature, 8);
-  return 0;
-}
-
-static unsigned addChunk_IHDR(ucvector* out, unsigned w, unsigned h,
-                              LodePNGColorType colortype, unsigned bitdepth, unsigned interlace_method) {
-  unsigned char *chunk, *data;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 13, "IHDR"));
-  data = chunk + 8;
-
-  lodepng_set32bitInt(data + 0, w); /*width*/
-  lodepng_set32bitInt(data + 4, h); /*height*/
-  data[8] = (unsigned char)bitdepth; /*bit depth*/
-  data[9] = (unsigned char)colortype; /*color type*/
-  data[10] = 0; /*compression method*/
-  data[11] = 0; /*filter method*/
-  data[12] = interlace_method; /*interlace method*/
-
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-/* only adds the chunk if needed (there is a key or palette with alpha) */
-static unsigned addChunk_PLTE(ucvector* out, const LodePNGColorMode* info) {
-  unsigned char* chunk;
-  size_t i, j = 8;
-
-  if(info->palettesize == 0 || info->palettesize > 256) {
-    return 68; /*invalid palette size, it is only allowed to be 1-256*/
-  }
-
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, info->palettesize * 3, "PLTE"));
-
-  for(i = 0; i != info->palettesize; ++i) {
-    /*add all channels except alpha channel*/
-    chunk[j++] = info->palette[i * 4 + 0];
-    chunk[j++] = info->palette[i * 4 + 1];
-    chunk[j++] = info->palette[i * 4 + 2];
-  }
-
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_tRNS(ucvector* out, const LodePNGColorMode* info) {
-  unsigned char* chunk = 0;
-
-  if(info->colortype == LCT_PALETTE) {
-    size_t i, amount = info->palettesize;
-    /*the tail of palette values that all have 255 as alpha, does not have to be encoded*/
-    for(i = info->palettesize; i != 0; --i) {
-      if(info->palette[4 * (i - 1) + 3] != 255) break;
-      --amount;
-    }
-    if(amount) {
-      CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, amount, "tRNS"));
-      /*add the alpha channel values from the palette*/
-      for(i = 0; i != amount; ++i) chunk[8 + i] = info->palette[4 * i + 3];
-    }
-  } else if(info->colortype == LCT_GREY) {
-    if(info->key_defined) {
-      CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 2, "tRNS"));
-      chunk[8] = (unsigned char)(info->key_r >> 8);
-      chunk[9] = (unsigned char)(info->key_r & 255);
-    }
-  } else if(info->colortype == LCT_RGB) {
-    if(info->key_defined) {
-      CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 6, "tRNS"));
-      chunk[8] = (unsigned char)(info->key_r >> 8);
-      chunk[9] = (unsigned char)(info->key_r & 255);
-      chunk[10] = (unsigned char)(info->key_g >> 8);
-      chunk[11] = (unsigned char)(info->key_g & 255);
-      chunk[12] = (unsigned char)(info->key_b >> 8);
-      chunk[13] = (unsigned char)(info->key_b & 255);
-    }
-  }
-
-  if(chunk) lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_IDAT(ucvector* out, const unsigned char* data, size_t datasize,
-                              LodePNGCompressSettings* zlibsettings) {
-  unsigned error = 0;
-  unsigned char* zlib = 0;
-  size_t zlibsize = 0;
-
-  error = zlib_compress(&zlib, &zlibsize, data, datasize, zlibsettings);
-  if(!error) {
-    error = lodepng_chunk_createv(out, zlibsize, "IDAT", zlib);
-  }
-  lodepng_free(zlib);
-  return error;
-}
-
-static unsigned addChunk_IEND(ucvector* out) {
-  return lodepng_chunk_createv(out, 0, "IEND", 0);
-}
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-
-static unsigned addChunk_tEXt(ucvector* out, const char* keyword, const char* textstring) {
-  unsigned char* chunk = 0;
-  size_t keysize = lodepng_strlen(keyword), textsize = lodepng_strlen(textstring);
-  size_t size = keysize + 1 + textsize;
-  if(keysize < 1 || keysize > 79) return 89; /*error: invalid keyword size*/
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, size, "tEXt"));
-  lodepng_memcpy(chunk + 8, keyword, keysize);
-  chunk[8 + keysize] = 0; /*null termination char*/
-  lodepng_memcpy(chunk + 9 + keysize, textstring, textsize);
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_zTXt(ucvector* out, const char* keyword, const char* textstring,
-                              LodePNGCompressSettings* zlibsettings) {
-  unsigned error = 0;
-  unsigned char* chunk = 0;
-  unsigned char* compressed = 0;
-  size_t compressedsize = 0;
-  size_t textsize = lodepng_strlen(textstring);
-  size_t keysize = lodepng_strlen(keyword);
-  if(keysize < 1 || keysize > 79) return 89; /*error: invalid keyword size*/
-
-  error = zlib_compress(&compressed, &compressedsize,
-                        (const unsigned char*)textstring, textsize, zlibsettings);
-  if(!error) {
-    size_t size = keysize + 2 + compressedsize;
-    error = lodepng_chunk_init(&chunk, out, size, "zTXt");
-  }
-  if(!error) {
-    lodepng_memcpy(chunk + 8, keyword, keysize);
-    chunk[8 + keysize] = 0; /*null termination char*/
-    chunk[9 + keysize] = 0; /*compression method: 0*/
-    lodepng_memcpy(chunk + 10 + keysize, compressed, compressedsize);
-    lodepng_chunk_generate_crc(chunk);
-  }
-
-  lodepng_free(compressed);
-  return error;
-}
-
-static unsigned addChunk_iTXt(ucvector* out, unsigned compress, const char* keyword, const char* langtag,
-                              const char* transkey, const char* textstring, LodePNGCompressSettings* zlibsettings) {
-  unsigned error = 0;
-  unsigned char* chunk = 0;
-  unsigned char* compressed = 0;
-  size_t compressedsize = 0;
-  size_t textsize = lodepng_strlen(textstring);
-  size_t keysize = lodepng_strlen(keyword), langsize = lodepng_strlen(langtag), transsize = lodepng_strlen(transkey);
-
-  if(keysize < 1 || keysize > 79) return 89; /*error: invalid keyword size*/
-
-  if(compress) {
-    error = zlib_compress(&compressed, &compressedsize,
-                          (const unsigned char*)textstring, textsize, zlibsettings);
-  }
-  if(!error) {
-    size_t size = keysize + 3 + langsize + 1 + transsize + 1 + (compress ? compressedsize : textsize);
-    error = lodepng_chunk_init(&chunk, out, size, "iTXt");
-  }
-  if(!error) {
-    size_t pos = 8;
-    lodepng_memcpy(chunk + pos, keyword, keysize);
-    pos += keysize;
-    chunk[pos++] = 0; /*null termination char*/
-    chunk[pos++] = (compress ? 1 : 0); /*compression flag*/
-    chunk[pos++] = 0; /*compression method: 0*/
-    lodepng_memcpy(chunk + pos, langtag, langsize);
-    pos += langsize;
-    chunk[pos++] = 0; /*null termination char*/
-    lodepng_memcpy(chunk + pos, transkey, transsize);
-    pos += transsize;
-    chunk[pos++] = 0; /*null termination char*/
-    if(compress) {
-      lodepng_memcpy(chunk + pos, compressed, compressedsize);
-    } else {
-      lodepng_memcpy(chunk + pos, textstring, textsize);
-    }
-    lodepng_chunk_generate_crc(chunk);
-  }
-
-  lodepng_free(compressed);
-  return error;
-}
-
-static unsigned addChunk_bKGD(ucvector* out, const LodePNGInfo* info) {
-  unsigned char* chunk = 0;
-  if(info->color.colortype == LCT_GREY || info->color.colortype == LCT_GREY_ALPHA) {
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 2, "bKGD"));
-    chunk[8] = (unsigned char)(info->background_r >> 8);
-    chunk[9] = (unsigned char)(info->background_r & 255);
-  } else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_RGBA) {
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 6, "bKGD"));
-    chunk[8] = (unsigned char)(info->background_r >> 8);
-    chunk[9] = (unsigned char)(info->background_r & 255);
-    chunk[10] = (unsigned char)(info->background_g >> 8);
-    chunk[11] = (unsigned char)(info->background_g & 255);
-    chunk[12] = (unsigned char)(info->background_b >> 8);
-    chunk[13] = (unsigned char)(info->background_b & 255);
-  } else if(info->color.colortype == LCT_PALETTE) {
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 1, "bKGD"));
-    chunk[8] = (unsigned char)(info->background_r & 255); /*palette index*/
-  }
-  if(chunk) lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_tIME(ucvector* out, const LodePNGTime* time) {
-  unsigned char* chunk;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 7, "tIME"));
-  chunk[8] = (unsigned char)(time->year >> 8);
-  chunk[9] = (unsigned char)(time->year & 255);
-  chunk[10] = (unsigned char)time->month;
-  chunk[11] = (unsigned char)time->day;
-  chunk[12] = (unsigned char)time->hour;
-  chunk[13] = (unsigned char)time->minute;
-  chunk[14] = (unsigned char)time->second;
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_pHYs(ucvector* out, const LodePNGInfo* info) {
-  unsigned char* chunk;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 9, "pHYs"));
-  lodepng_set32bitInt(chunk + 8, info->phys_x);
-  lodepng_set32bitInt(chunk + 12, info->phys_y);
-  chunk[16] = info->phys_unit;
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_gAMA(ucvector* out, const LodePNGInfo* info) {
-  unsigned char* chunk;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 4, "gAMA"));
-  lodepng_set32bitInt(chunk + 8, info->gama_gamma);
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_cHRM(ucvector* out, const LodePNGInfo* info) {
-  unsigned char* chunk;
-  CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 32, "cHRM"));
-  lodepng_set32bitInt(chunk + 8, info->chrm_white_x);
-  lodepng_set32bitInt(chunk + 12, info->chrm_white_y);
-  lodepng_set32bitInt(chunk + 16, info->chrm_red_x);
-  lodepng_set32bitInt(chunk + 20, info->chrm_red_y);
-  lodepng_set32bitInt(chunk + 24, info->chrm_green_x);
-  lodepng_set32bitInt(chunk + 28, info->chrm_green_y);
-  lodepng_set32bitInt(chunk + 32, info->chrm_blue_x);
-  lodepng_set32bitInt(chunk + 36, info->chrm_blue_y);
-  lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-static unsigned addChunk_sRGB(ucvector* out, const LodePNGInfo* info) {
-  unsigned char data = info->srgb_intent;
-  return lodepng_chunk_createv(out, 1, "sRGB", &data);
-}
-
-static unsigned addChunk_iCCP(ucvector* out, const LodePNGInfo* info, LodePNGCompressSettings* zlibsettings) {
-  unsigned error = 0;
-  unsigned char* chunk = 0;
-  unsigned char* compressed = 0;
-  size_t compressedsize = 0;
-  size_t keysize = lodepng_strlen(info->iccp_name);
-
-  if(keysize < 1 || keysize > 79) return 89; /*error: invalid keyword size*/
-  error = zlib_compress(&compressed, &compressedsize,
-                        info->iccp_profile, info->iccp_profile_size, zlibsettings);
-  if(!error) {
-    size_t size = keysize + 2 + compressedsize;
-    error = lodepng_chunk_init(&chunk, out, size, "iCCP");
-  }
-  if(!error) {
-    lodepng_memcpy(chunk + 8, info->iccp_name, keysize);
-    chunk[8 + keysize] = 0; /*null termination char*/
-    chunk[9 + keysize] = 0; /*compression method: 0*/
-    lodepng_memcpy(chunk + 10 + keysize, compressed, compressedsize);
-    lodepng_chunk_generate_crc(chunk);
-  }
-
-  lodepng_free(compressed);
-  return error;
-}
-
-static unsigned addChunk_sBIT(ucvector* out, const LodePNGInfo* info) {
-  unsigned bitdepth = (info->color.colortype == LCT_PALETTE) ? 8 : info->color.bitdepth;
-  unsigned char* chunk = 0;
-  if(info->color.colortype == LCT_GREY) {
-    if(info->sbit_r == 0 || info->sbit_r > bitdepth) return 115;
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 1, "sBIT"));
-    chunk[8] = info->sbit_r;
-  } else if(info->color.colortype == LCT_RGB || info->color.colortype == LCT_PALETTE) {
-    if(info->sbit_r == 0 || info->sbit_g == 0 || info->sbit_b == 0) return 115;
-    if(info->sbit_r > bitdepth || info->sbit_g > bitdepth || info->sbit_b > bitdepth) return 115;
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 3, "sBIT"));
-    chunk[8] = info->sbit_r;
-    chunk[9] = info->sbit_g;
-    chunk[10] = info->sbit_b;
-  } else if(info->color.colortype == LCT_GREY_ALPHA) {
-    if(info->sbit_r == 0 || info->sbit_a == 0) return 115;
-    if(info->sbit_r > bitdepth || info->sbit_a > bitdepth) return 115;
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 2, "sBIT"));
-    chunk[8] = info->sbit_r;
-    chunk[9] = info->sbit_a;
-  } else if(info->color.colortype == LCT_RGBA) {
-    if(info->sbit_r == 0 || info->sbit_g == 0 || info->sbit_b == 0 || info->sbit_a == 0 ||
-       info->sbit_r > bitdepth || info->sbit_g > bitdepth ||
-       info->sbit_b > bitdepth || info->sbit_a > bitdepth) {
-      return 115;
-    }
-    CERROR_TRY_RETURN(lodepng_chunk_init(&chunk, out, 4, "sBIT"));
-    chunk[8] = info->sbit_r;
-    chunk[9] = info->sbit_g;
-    chunk[10] = info->sbit_b;
-    chunk[11] = info->sbit_a;
-  }
-  if(chunk) lodepng_chunk_generate_crc(chunk);
-  return 0;
-}
-
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-static void filterScanline(unsigned char* out, const unsigned char* scanline, const unsigned char* prevline,
-                           size_t length, size_t bytewidth, unsigned char filterType) {
-  size_t i;
-  switch(filterType) {
-    case 0: /*None*/
-      for(i = 0; i != length; ++i) out[i] = scanline[i];
-      break;
-    case 1: /*Sub*/
-      for(i = 0; i != bytewidth; ++i) out[i] = scanline[i];
-      for(i = bytewidth; i < length; ++i) out[i] = scanline[i] - scanline[i - bytewidth];
-      break;
-    case 2: /*Up*/
-      if(prevline) {
-        for(i = 0; i != length; ++i) out[i] = scanline[i] - prevline[i];
-      } else {
-        for(i = 0; i != length; ++i) out[i] = scanline[i];
-      }
-      break;
-    case 3: /*Average*/
-      if(prevline) {
-        for(i = 0; i != bytewidth; ++i) out[i] = scanline[i] - (prevline[i] >> 1);
-        for(i = bytewidth; i < length; ++i) out[i] = scanline[i] - ((scanline[i - bytewidth] + prevline[i]) >> 1);
-      } else {
-        for(i = 0; i != bytewidth; ++i) out[i] = scanline[i];
-        for(i = bytewidth; i < length; ++i) out[i] = scanline[i] - (scanline[i - bytewidth] >> 1);
-      }
-      break;
-    case 4: /*Paeth*/
-      if(prevline) {
-        /*paethPredictor(0, prevline[i], 0) is always prevline[i]*/
-        for(i = 0; i != bytewidth; ++i) out[i] = (scanline[i] - prevline[i]);
-        for(i = bytewidth; i < length; ++i) {
-          out[i] = (scanline[i] - paethPredictor(scanline[i - bytewidth], prevline[i], prevline[i - bytewidth]));
-        }
-      } else {
-        for(i = 0; i != bytewidth; ++i) out[i] = scanline[i];
-        /*paethPredictor(scanline[i - bytewidth], 0, 0) is always scanline[i - bytewidth]*/
-        for(i = bytewidth; i < length; ++i) out[i] = (scanline[i] - scanline[i - bytewidth]);
-      }
-      break;
-    default: return; /*invalid filter type given*/
-  }
-}
-
-/* integer binary logarithm, max return value is 31 */
-static size_t ilog2(size_t i) {
-  size_t result = 0;
-  if(i >= 65536) { result += 16; i >>= 16; }
-  if(i >= 256) { result += 8; i >>= 8; }
-  if(i >= 16) { result += 4; i >>= 4; }
-  if(i >= 4) { result += 2; i >>= 2; }
-  if(i >= 2) { result += 1; /*i >>= 1;*/ }
-  return result;
-}
-
-/* integer approximation for i * log2(i), helper function for LFS_ENTROPY */
-static size_t ilog2i(size_t i) {
-  size_t l;
-  if(i == 0) return 0;
-  l = ilog2(i);
-  /* approximate i*log2(i): l is integer logarithm, ((i - (1u << l)) << 1u)
-  linearly approximates the missing fractional part multiplied by i */
-  return i * l + ((i - (1u << l)) << 1u);
-}
-
-static unsigned filter(unsigned char* out, const unsigned char* in, unsigned w, unsigned h,
-                       const LodePNGColorMode* color, const LodePNGEncoderSettings* settings) {
-  /*
-  For PNG filter method 0
-  out must be a buffer with as size: h + (w * h * bpp + 7u) / 8u, because there are
-  the scanlines with 1 extra byte per scanline
-  */
-
-  unsigned bpp = lodepng_get_bpp(color);
-  /*the width of a scanline in bytes, not including the filter type*/
-  size_t linebytes = lodepng_get_raw_size_idat(w, 1, bpp) - 1u;
-
-  /*bytewidth is used for filtering, is 1 when bpp < 8, number of bytes per pixel otherwise*/
-  size_t bytewidth = (bpp + 7u) / 8u;
-  const unsigned char* prevline = 0;
-  unsigned x, y;
-  unsigned error = 0;
-  LodePNGFilterStrategy strategy = settings->filter_strategy;
-
-  /*
-  There is a heuristic called the minimum sum of absolute differences heuristic, suggested by the PNG standard:
-   *  If the image type is Palette, or the bit depth is smaller than 8, then do not filter the image (i.e.
-      use fixed filtering, with the filter None).
-   * (The other case) If the image type is Grayscale or RGB (with or without Alpha), and the bit depth is
-     not smaller than 8, then use adaptive filtering heuristic as follows: independently for each row, apply
-     all five filters and select the filter that produces the smallest sum of absolute values per row.
-  This heuristic is used if filter strategy is LFS_MINSUM and filter_palette_zero is true.
-
-  If filter_palette_zero is true and filter_strategy is not LFS_MINSUM, the above heuristic is followed,
-  but for "the other case", whatever strategy filter_strategy is set to instead of the minimum sum
-  heuristic is used.
-  */
-  if(settings->filter_palette_zero &&
-     (color->colortype == LCT_PALETTE || color->bitdepth < 8)) strategy = LFS_ZERO;
-
-  if(bpp == 0) return 31; /*error: invalid color type*/
-
-  if(strategy >= LFS_ZERO && strategy <= LFS_FOUR) {
-    unsigned char type = (unsigned char)strategy;
-    for(y = 0; y != h; ++y) {
-      size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/
-      size_t inindex = linebytes * y;
-      out[outindex] = type; /*filter type byte*/
-      filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, type);
-      prevline = &in[inindex];
-    }
-  } else if(strategy == LFS_MINSUM) {
-    /*adaptive filtering*/
-    unsigned char* attempt[5]; /*five filtering attempts, one for each filter type*/
-    size_t smallest = 0;
-    unsigned char type, bestType = 0;
-
-    for(type = 0; type != 5; ++type) {
-      attempt[type] = (unsigned char*)lodepng_malloc(linebytes);
-      if(!attempt[type]) error = 83; /*alloc fail*/
-    }
-
-    if(!error) {
-      for(y = 0; y != h; ++y) {
-        /*try the 5 filter types*/
-        for(type = 0; type != 5; ++type) {
-          size_t sum = 0;
-          filterScanline(attempt[type], &in[y * linebytes], prevline, linebytes, bytewidth, type);
-
-          /*calculate the sum of the result*/
-          if(type == 0) {
-            for(x = 0; x != linebytes; ++x) sum += (unsigned char)(attempt[type][x]);
-          } else {
-            for(x = 0; x != linebytes; ++x) {
-              /*For differences, each byte should be treated as signed, values above 127 are negative
-              (converted to signed char). Filtertype 0 isn't a difference though, so use unsigned there.
-              This means filtertype 0 is almost never chosen, but that is justified.*/
-              unsigned char s = attempt[type][x];
-              sum += s < 128 ? s : (255U - s);
-            }
-          }
-
-          /*check if this is smallest sum (or if type == 0 it's the first case so always store the values)*/
-          if(type == 0 || sum < smallest) {
-            bestType = type;
-            smallest = sum;
-          }
-        }
-
-        prevline = &in[y * linebytes];
-
-        /*now fill the out values*/
-        out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/
-        for(x = 0; x != linebytes; ++x) out[y * (linebytes + 1) + 1 + x] = attempt[bestType][x];
-      }
-    }
-
-    for(type = 0; type != 5; ++type) lodepng_free(attempt[type]);
-  } else if(strategy == LFS_ENTROPY) {
-    unsigned char* attempt[5]; /*five filtering attempts, one for each filter type*/
-    size_t bestSum = 0;
-    unsigned type, bestType = 0;
-    unsigned count[256];
-
-    for(type = 0; type != 5; ++type) {
-      attempt[type] = (unsigned char*)lodepng_malloc(linebytes);
-      if(!attempt[type]) error = 83; /*alloc fail*/
-    }
-
-    if(!error) {
-      for(y = 0; y != h; ++y) {
-        /*try the 5 filter types*/
-        for(type = 0; type != 5; ++type) {
-          size_t sum = 0;
-          filterScanline(attempt[type], &in[y * linebytes], prevline, linebytes, bytewidth, type);
-          lodepng_memset(count, 0, 256 * sizeof(*count));
-          for(x = 0; x != linebytes; ++x) ++count[attempt[type][x]];
-          ++count[type]; /*the filter type itself is part of the scanline*/
-          for(x = 0; x != 256; ++x) {
-            sum += ilog2i(count[x]);
-          }
-          /*check if this is smallest sum (or if type == 0 it's the first case so always store the values)*/
-          if(type == 0 || sum > bestSum) {
-            bestType = type;
-            bestSum = sum;
-          }
-        }
-
-        prevline = &in[y * linebytes];
-
-        /*now fill the out values*/
-        out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/
-        for(x = 0; x != linebytes; ++x) out[y * (linebytes + 1) + 1 + x] = attempt[bestType][x];
-      }
-    }
-
-    for(type = 0; type != 5; ++type) lodepng_free(attempt[type]);
-  } else if(strategy == LFS_PREDEFINED) {
-    for(y = 0; y != h; ++y) {
-      size_t outindex = (1 + linebytes) * y; /*the extra filterbyte added to each row*/
-      size_t inindex = linebytes * y;
-      unsigned char type = settings->predefined_filters[y];
-      out[outindex] = type; /*filter type byte*/
-      filterScanline(&out[outindex + 1], &in[inindex], prevline, linebytes, bytewidth, type);
-      prevline = &in[inindex];
-    }
-  } else if(strategy == LFS_BRUTE_FORCE) {
-    /*brute force filter chooser.
-    deflate the scanline after every filter attempt to see which one deflates best.
-    This is very slow and gives only slightly smaller, sometimes even larger, result*/
-    size_t size[5];
-    unsigned char* attempt[5]; /*five filtering attempts, one for each filter type*/
-    size_t smallest = 0;
-    unsigned type = 0, bestType = 0;
-    unsigned char* dummy;
-    LodePNGCompressSettings zlibsettings;
-    lodepng_memcpy(&zlibsettings, &settings->zlibsettings, sizeof(LodePNGCompressSettings));
-    /*use fixed tree on the attempts so that the tree is not adapted to the filtertype on purpose,
-    to simulate the true case where the tree is the same for the whole image. Sometimes it gives
-    better result with dynamic tree anyway. Using the fixed tree sometimes gives worse, but in rare
-    cases better compression. It does make this a bit less slow, so it's worth doing this.*/
-    zlibsettings.btype = 1;
-    /*a custom encoder likely doesn't read the btype setting and is optimized for complete PNG
-    images only, so disable it*/
-    zlibsettings.custom_zlib = 0;
-    zlibsettings.custom_deflate = 0;
-    for(type = 0; type != 5; ++type) {
-      attempt[type] = (unsigned char*)lodepng_malloc(linebytes);
-      if(!attempt[type]) error = 83; /*alloc fail*/
-    }
-    if(!error) {
-      for(y = 0; y != h; ++y) /*try the 5 filter types*/ {
-        for(type = 0; type != 5; ++type) {
-          unsigned testsize = (unsigned)linebytes;
-          /*if(testsize > 8) testsize /= 8;*/ /*it already works good enough by testing a part of the row*/
-
-          filterScanline(attempt[type], &in[y * linebytes], prevline, linebytes, bytewidth, type);
-          size[type] = 0;
-          dummy = 0;
-          zlib_compress(&dummy, &size[type], attempt[type], testsize, &zlibsettings);
-          lodepng_free(dummy);
-          /*check if this is smallest size (or if type == 0 it's the first case so always store the values)*/
-          if(type == 0 || size[type] < smallest) {
-            bestType = type;
-            smallest = size[type];
-          }
-        }
-        prevline = &in[y * linebytes];
-        out[y * (linebytes + 1)] = bestType; /*the first byte of a scanline will be the filter type*/
-        for(x = 0; x != linebytes; ++x) out[y * (linebytes + 1) + 1 + x] = attempt[bestType][x];
-      }
-    }
-    for(type = 0; type != 5; ++type) lodepng_free(attempt[type]);
-  }
-  else return 88; /* unknown filter strategy */
-
-  return error;
-}
-
-static void addPaddingBits(unsigned char* out, const unsigned char* in,
-                           size_t olinebits, size_t ilinebits, unsigned h) {
-  /*The opposite of the removePaddingBits function
-  olinebits must be >= ilinebits*/
-  unsigned y;
-  size_t diff = olinebits - ilinebits;
-  size_t obp = 0, ibp = 0; /*bit pointers*/
-  for(y = 0; y != h; ++y) {
-    size_t x;
-    for(x = 0; x < ilinebits; ++x) {
-      unsigned char bit = readBitFromReversedStream(&ibp, in);
-      setBitOfReversedStream(&obp, out, bit);
-    }
-    /*obp += diff; --> no, fill in some value in the padding bits too, to avoid
-    "Use of uninitialised value of size ###" warning from valgrind*/
-    for(x = 0; x != diff; ++x) setBitOfReversedStream(&obp, out, 0);
-  }
-}
-
-/*
-in: non-interlaced image with size w*h
-out: the same pixels, but re-ordered according to PNG's Adam7 interlacing, with
- no padding bits between scanlines, but between reduced images so that each
- reduced image starts at a byte.
-bpp: bits per pixel
-there are no padding bits, not between scanlines, not between reduced images
-in has the following size in bits: w * h * bpp.
-out is possibly bigger due to padding bits between reduced images
-NOTE: comments about padding bits are only relevant if bpp < 8
-*/
-static void Adam7_interlace(unsigned char* out, const unsigned char* in, unsigned w, unsigned h, unsigned bpp) {
-  unsigned passw[7], passh[7];
-  size_t filter_passstart[8], padded_passstart[8], passstart[8];
-  unsigned i;
-
-  Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp);
-
-  if(bpp >= 8) {
-    for(i = 0; i != 7; ++i) {
-      unsigned x, y, b;
-      size_t bytewidth = bpp / 8u;
-      for(y = 0; y < passh[i]; ++y)
-      for(x = 0; x < passw[i]; ++x) {
-        size_t pixelinstart = ((ADAM7_IY[i] + y * ADAM7_DY[i]) * w + ADAM7_IX[i] + x * ADAM7_DX[i]) * bytewidth;
-        size_t pixeloutstart = passstart[i] + (y * passw[i] + x) * bytewidth;
-        for(b = 0; b < bytewidth; ++b) {
-          out[pixeloutstart + b] = in[pixelinstart + b];
-        }
-      }
-    }
-  } else /*bpp < 8: Adam7 with pixels < 8 bit is a bit trickier: with bit pointers*/ {
-    for(i = 0; i != 7; ++i) {
-      unsigned x, y, b;
-      unsigned ilinebits = bpp * passw[i];
-      unsigned olinebits = bpp * w;
-      size_t obp, ibp; /*bit pointers (for out and in buffer)*/
-      for(y = 0; y < passh[i]; ++y)
-      for(x = 0; x < passw[i]; ++x) {
-        ibp = (ADAM7_IY[i] + y * ADAM7_DY[i]) * olinebits + (ADAM7_IX[i] + x * ADAM7_DX[i]) * bpp;
-        obp = (8 * passstart[i]) + (y * ilinebits + x * bpp);
-        for(b = 0; b < bpp; ++b) {
-          unsigned char bit = readBitFromReversedStream(&ibp, in);
-          setBitOfReversedStream(&obp, out, bit);
-        }
-      }
-    }
-  }
-}
-
-/*out must be buffer big enough to contain uncompressed IDAT chunk data, and in must contain the full image.
-return value is error**/
-static unsigned preProcessScanlines(unsigned char** out, size_t* outsize, const unsigned char* in,
-                                    unsigned w, unsigned h,
-                                    const LodePNGInfo* info_png, const LodePNGEncoderSettings* settings) {
-  /*
-  This function converts the pure 2D image with the PNG's colortype, into filtered-padded-interlaced data. Steps:
-  *) if no Adam7: 1) add padding bits (= possible extra bits per scanline if bpp < 8) 2) filter
-  *) if adam7: 1) Adam7_interlace 2) 7x add padding bits 3) 7x filter
-  */
-  unsigned bpp = lodepng_get_bpp(&info_png->color);
-  unsigned error = 0;
-
-  if(info_png->interlace_method == 0) {
-    *outsize = h + (h * ((w * bpp + 7u) / 8u)); /*image size plus an extra byte per scanline + possible padding bits*/
-    *out = (unsigned char*)lodepng_malloc(*outsize);
-    if(!(*out) && (*outsize)) error = 83; /*alloc fail*/
-
-    if(!error) {
-      /*non multiple of 8 bits per scanline, padding bits needed per scanline*/
-      if(bpp < 8 && w * bpp != ((w * bpp + 7u) / 8u) * 8u) {
-        unsigned char* padded = (unsigned char*)lodepng_malloc(h * ((w * bpp + 7u) / 8u));
-        if(!padded) error = 83; /*alloc fail*/
-        if(!error) {
-          addPaddingBits(padded, in, ((w * bpp + 7u) / 8u) * 8u, w * bpp, h);
-          error = filter(*out, padded, w, h, &info_png->color, settings);
-        }
-        lodepng_free(padded);
-      } else {
-        /*we can immediately filter into the out buffer, no other steps needed*/
-        error = filter(*out, in, w, h, &info_png->color, settings);
-      }
-    }
-  } else /*interlace_method is 1 (Adam7)*/ {
-    unsigned passw[7], passh[7];
-    size_t filter_passstart[8], padded_passstart[8], passstart[8];
-    unsigned char* adam7;
-
-    Adam7_getpassvalues(passw, passh, filter_passstart, padded_passstart, passstart, w, h, bpp);
-
-    *outsize = filter_passstart[7]; /*image size plus an extra byte per scanline + possible padding bits*/
-    *out = (unsigned char*)lodepng_malloc(*outsize);
-    if(!(*out)) error = 83; /*alloc fail*/
-
-    adam7 = (unsigned char*)lodepng_malloc(passstart[7]);
-    if(!adam7 && passstart[7]) error = 83; /*alloc fail*/
-
-    if(!error) {
-      unsigned i;
-
-      Adam7_interlace(adam7, in, w, h, bpp);
-      for(i = 0; i != 7; ++i) {
-        if(bpp < 8) {
-          unsigned char* padded = (unsigned char*)lodepng_malloc(padded_passstart[i + 1] - padded_passstart[i]);
-          if(!padded) ERROR_BREAK(83); /*alloc fail*/
-          addPaddingBits(padded, &adam7[passstart[i]],
-                         ((passw[i] * bpp + 7u) / 8u) * 8u, passw[i] * bpp, passh[i]);
-          error = filter(&(*out)[filter_passstart[i]], padded,
-                         passw[i], passh[i], &info_png->color, settings);
-          lodepng_free(padded);
-        } else {
-          error = filter(&(*out)[filter_passstart[i]], &adam7[padded_passstart[i]],
-                         passw[i], passh[i], &info_png->color, settings);
-        }
-
-        if(error) break;
-      }
-    }
-
-    lodepng_free(adam7);
-  }
-
-  return error;
-}
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-static unsigned addUnknownChunks(ucvector* out, unsigned char* data, size_t datasize) {
-  unsigned char* inchunk = data;
-  while((size_t)(inchunk - data) < datasize) {
-    CERROR_TRY_RETURN(lodepng_chunk_append(&out->data, &out->size, inchunk));
-    out->allocsize = out->size; /*fix the allocsize again*/
-    inchunk = lodepng_chunk_next(inchunk, data + datasize);
-  }
-  return 0;
-}
-
-static unsigned isGrayICCProfile(const unsigned char* profile, unsigned size) {
-  /*
-  It is a gray profile if bytes 16-19 are "GRAY", rgb profile if bytes 16-19
-  are "RGB ". We do not perform any full parsing of the ICC profile here, other
-  than check those 4 bytes to grayscale profile. Other than that, validity of
-  the profile is not checked. This is needed only because the PNG specification
-  requires using a non-gray color model if there is an ICC profile with "RGB "
-  (sadly limiting compression opportunities if the input data is grayscale RGB
-  data), and requires using a gray color model if it is "GRAY".
-  */
-  if(size < 20) return 0;
-  return profile[16] == 'G' &&  profile[17] == 'R' &&  profile[18] == 'A' &&  profile[19] == 'Y';
-}
-
-static unsigned isRGBICCProfile(const unsigned char* profile, unsigned size) {
-  /* See comment in isGrayICCProfile*/
-  if(size < 20) return 0;
-  return profile[16] == 'R' &&  profile[17] == 'G' &&  profile[18] == 'B' &&  profile[19] == ' ';
-}
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-unsigned lodepng_encode(unsigned char** out, size_t* outsize,
-                        const unsigned char* image, unsigned w, unsigned h,
-                        LodePNGState* state) {
-  unsigned char* data = 0; /*uncompressed version of the IDAT chunk data*/
-  size_t datasize = 0;
-  ucvector outv = ucvector_init(NULL, 0);
-  LodePNGInfo info;
-  const LodePNGInfo* info_png = &state->info_png;
-  LodePNGColorMode auto_color;
-
-  lodepng_info_init(&info);
-  lodepng_color_mode_init(&auto_color);
-
-  /*provide some proper output values if error will happen*/
-  *out = 0;
-  *outsize = 0;
-  state->error = 0;
-
-  /*check input values validity*/
-  if((info_png->color.colortype == LCT_PALETTE || state->encoder.force_palette)
-      && (info_png->color.palettesize == 0 || info_png->color.palettesize > 256)) {
-    /*this error is returned even if auto_convert is enabled and thus encoder could
-    generate the palette by itself: while allowing this could be possible in theory,
-    it may complicate the code or edge cases, and always requiring to give a palette
-    when setting this color type is a simpler contract*/
-    state->error = 68; /*invalid palette size, it is only allowed to be 1-256*/
-    goto cleanup;
-  }
-  if(state->encoder.zlibsettings.btype > 2) {
-    state->error = 61; /*error: invalid btype*/
-    goto cleanup;
-  }
-  if(info_png->interlace_method > 1) {
-    state->error = 71; /*error: invalid interlace mode*/
-    goto cleanup;
-  }
-  state->error = checkColorValidity(info_png->color.colortype, info_png->color.bitdepth);
-  if(state->error) goto cleanup; /*error: invalid color type given*/
-  state->error = checkColorValidity(state->info_raw.colortype, state->info_raw.bitdepth);
-  if(state->error) goto cleanup; /*error: invalid color type given*/
-
-  /* color convert and compute scanline filter types */
-  lodepng_info_copy(&info, &state->info_png);
-  if(state->encoder.auto_convert) {
-    LodePNGColorStats stats;
-    unsigned allow_convert = 1;
-    lodepng_color_stats_init(&stats);
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    if(info_png->iccp_defined &&
-        isGrayICCProfile(info_png->iccp_profile, info_png->iccp_profile_size)) {
-      /*the PNG specification does not allow to use palette with a GRAY ICC profile, even
-      if the palette has only gray colors, so disallow it.*/
-      stats.allow_palette = 0;
-    }
-    if(info_png->iccp_defined &&
-        isRGBICCProfile(info_png->iccp_profile, info_png->iccp_profile_size)) {
-      /*the PNG specification does not allow to use grayscale color with RGB ICC profile, so disallow gray.*/
-      stats.allow_greyscale = 0;
-    }
-#endif /* LODEPNG_COMPILE_ANCILLARY_CHUNKS */
-    state->error = lodepng_compute_color_stats(&stats, image, w, h, &state->info_raw);
-    if(state->error) goto cleanup;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    if(info_png->background_defined) {
-      /*the background chunk's color must be taken into account as well*/
-      unsigned r = 0, g = 0, b = 0;
-      LodePNGColorMode mode16 = lodepng_color_mode_make(LCT_RGB, 16);
-      lodepng_convert_rgb(&r, &g, &b,
-          info_png->background_r, info_png->background_g, info_png->background_b, &mode16, &info_png->color);
-      state->error = lodepng_color_stats_add(&stats, r, g, b, 65535);
-      if(state->error) goto cleanup;
-    }
-#endif /* LODEPNG_COMPILE_ANCILLARY_CHUNKS */
-    state->error = auto_choose_color(&auto_color, &state->info_raw, &stats);
-    if(state->error) goto cleanup;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    if(info_png->sbit_defined) {
-      /*if sbit is defined, due to strict requirements of which sbit values can be present for which color modes,
-      auto_convert can't be done in many cases. However, do support a few cases here.
-      TODO: more conversions may be possible, and it may also be possible to get a more appropriate color type out of
-            auto_choose_color if knowledge about sbit is used beforehand
-      */
-      unsigned sbit_max = LODEPNG_MAX(LODEPNG_MAX(LODEPNG_MAX(info_png->sbit_r, info_png->sbit_g),
-                           info_png->sbit_b), info_png->sbit_a);
-      unsigned equal = (!info_png->sbit_g || info_png->sbit_g == info_png->sbit_r)
-                    && (!info_png->sbit_b || info_png->sbit_b == info_png->sbit_r)
-                    && (!info_png->sbit_a || info_png->sbit_a == info_png->sbit_r);
-      allow_convert = 0;
-      if(info.color.colortype == LCT_PALETTE &&
-         auto_color.colortype == LCT_PALETTE) {
-        /* input and output are palette, and in this case it may happen that palette data is
-        expected to be copied from info_raw into the info_png */
-        allow_convert = 1;
-      }
-      /*going from 8-bit RGB to palette (or 16-bit as long as sbit_max <= 8) is possible
-      since both are 8-bit RGB for sBIT's purposes*/
-      if(info.color.colortype == LCT_RGB &&
-         auto_color.colortype == LCT_PALETTE && sbit_max <= 8) {
-        allow_convert = 1;
-      }
-      /*going from 8-bit RGBA to palette is also ok but only if sbit_a is exactly 8*/
-      if(info.color.colortype == LCT_RGBA && auto_color.colortype == LCT_PALETTE &&
-         info_png->sbit_a == 8 && sbit_max <= 8) {
-        allow_convert = 1;
-      }
-      /*going from 16-bit RGB(A) to 8-bit RGB(A) is ok if all sbit values are <= 8*/
-      if((info.color.colortype == LCT_RGB || info.color.colortype == LCT_RGBA) && info.color.bitdepth == 16 &&
-         auto_color.colortype == info.color.colortype && auto_color.bitdepth == 8 &&
-         sbit_max <= 8) {
-        allow_convert = 1;
-      }
-      /*going to less channels is ok if all bit values are equal (all possible values in sbit,
-        as well as the chosen bitdepth of the result). Due to how auto_convert works,
-        we already know that auto_color.colortype has less than or equal amount of channels than
-        info.colortype. Palette is not used here. This conversion is not allowed if
-        info_png->sbit_r < auto_color.bitdepth, because specifically for alpha, non-presence of
-        an sbit value heavily implies that alpha's bit depth is equal to the PNG bit depth (rather
-        than the bit depths set in the r, g and b sbit values, by how the PNG specification describes
-        handling tRNS chunk case with sBIT), so be conservative here about ignoring user input.*/
-      if(info.color.colortype != LCT_PALETTE && auto_color.colortype != LCT_PALETTE &&
-         equal && info_png->sbit_r == auto_color.bitdepth) {
-        allow_convert = 1;
-      }
-    }
-#endif
-    if(state->encoder.force_palette) {
-      if(info.color.colortype != LCT_GREY && info.color.colortype != LCT_GREY_ALPHA &&
-         (auto_color.colortype == LCT_GREY || auto_color.colortype == LCT_GREY_ALPHA)) {
-        /*user speficially forced a PLTE palette, so cannot convert to grayscale types because
-        the PNG specification only allows writing a suggested palette in PLTE for truecolor types*/
-        allow_convert = 0;
-      }
-    }
-    if(allow_convert) {
-      lodepng_color_mode_copy(&info.color, &auto_color);
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-      /*also convert the background chunk*/
-      if(info_png->background_defined) {
-        if(lodepng_convert_rgb(&info.background_r, &info.background_g, &info.background_b,
-            info_png->background_r, info_png->background_g, info_png->background_b, &info.color, &info_png->color)) {
-          state->error = 104;
-          goto cleanup;
-        }
-      }
-#endif /* LODEPNG_COMPILE_ANCILLARY_CHUNKS */
-    }
-  }
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  if(info_png->iccp_defined) {
-    unsigned gray_icc = isGrayICCProfile(info_png->iccp_profile, info_png->iccp_profile_size);
-    unsigned rgb_icc = isRGBICCProfile(info_png->iccp_profile, info_png->iccp_profile_size);
-    unsigned gray_png = info.color.colortype == LCT_GREY || info.color.colortype == LCT_GREY_ALPHA;
-    if(!gray_icc && !rgb_icc) {
-      state->error = 100; /* Disallowed profile color type for PNG */
-      goto cleanup;
-    }
-    if(gray_icc != gray_png) {
-      /*Not allowed to use RGB/RGBA/palette with GRAY ICC profile or vice versa,
-      or in case of auto_convert, it wasn't possible to find appropriate model*/
-      state->error = state->encoder.auto_convert ? 102 : 101;
-      goto cleanup;
-    }
-  }
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-  if(!lodepng_color_mode_equal(&state->info_raw, &info.color)) {
-    unsigned char* converted;
-    size_t size = ((size_t)w * (size_t)h * (size_t)lodepng_get_bpp(&info.color) + 7u) / 8u;
-
-    converted = (unsigned char*)lodepng_malloc(size);
-    if(!converted && size) state->error = 83; /*alloc fail*/
-    if(!state->error) {
-      state->error = lodepng_convert(converted, image, &info.color, &state->info_raw, w, h);
-    }
-    if(!state->error) {
-      state->error = preProcessScanlines(&data, &datasize, converted, w, h, &info, &state->encoder);
-    }
-    lodepng_free(converted);
-    if(state->error) goto cleanup;
-  } else {
-    state->error = preProcessScanlines(&data, &datasize, image, w, h, &info, &state->encoder);
-    if(state->error) goto cleanup;
-  }
-
-  /* output all PNG chunks */ {
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    size_t i;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    /*write signature and chunks*/
-    state->error = writeSignature(&outv);
-    if(state->error) goto cleanup;
-    /*IHDR*/
-    state->error = addChunk_IHDR(&outv, w, h, info.color.colortype, info.color.bitdepth, info.interlace_method);
-    if(state->error) goto cleanup;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    /*unknown chunks between IHDR and PLTE*/
-    if(info.unknown_chunks_data[0]) {
-      state->error = addUnknownChunks(&outv, info.unknown_chunks_data[0], info.unknown_chunks_size[0]);
-      if(state->error) goto cleanup;
-    }
-    /*color profile chunks must come before PLTE */
-    if(info.iccp_defined) {
-      state->error = addChunk_iCCP(&outv, &info, &state->encoder.zlibsettings);
-      if(state->error) goto cleanup;
-    }
-    if(info.srgb_defined) {
-      state->error = addChunk_sRGB(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-    if(info.gama_defined) {
-      state->error = addChunk_gAMA(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-    if(info.chrm_defined) {
-      state->error = addChunk_cHRM(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-    if(info_png->sbit_defined) {
-      state->error = addChunk_sBIT(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    /*PLTE*/
-    if(info.color.colortype == LCT_PALETTE) {
-      state->error = addChunk_PLTE(&outv, &info.color);
-      if(state->error) goto cleanup;
-    }
-    if(state->encoder.force_palette && (info.color.colortype == LCT_RGB || info.color.colortype == LCT_RGBA)) {
-      /*force_palette means: write suggested palette for truecolor in PLTE chunk*/
-      state->error = addChunk_PLTE(&outv, &info.color);
-      if(state->error) goto cleanup;
-    }
-    /*tRNS (this will only add if when necessary) */
-    state->error = addChunk_tRNS(&outv, &info.color);
-    if(state->error) goto cleanup;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    /*bKGD (must come between PLTE and the IDAt chunks*/
-    if(info.background_defined) {
-      state->error = addChunk_bKGD(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-    /*pHYs (must come before the IDAT chunks)*/
-    if(info.phys_defined) {
-      state->error = addChunk_pHYs(&outv, &info);
-      if(state->error) goto cleanup;
-    }
-
-    /*unknown chunks between PLTE and IDAT*/
-    if(info.unknown_chunks_data[1]) {
-      state->error = addUnknownChunks(&outv, info.unknown_chunks_data[1], info.unknown_chunks_size[1]);
-      if(state->error) goto cleanup;
-    }
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    /*IDAT (multiple IDAT chunks must be consecutive)*/
-    state->error = addChunk_IDAT(&outv, data, datasize, &state->encoder.zlibsettings);
-    if(state->error) goto cleanup;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-    /*tIME*/
-    if(info.time_defined) {
-      state->error = addChunk_tIME(&outv, &info.time);
-      if(state->error) goto cleanup;
-    }
-    /*tEXt and/or zTXt*/
-    for(i = 0; i != info.text_num; ++i) {
-      if(lodepng_strlen(info.text_keys[i]) > 79) {
-        state->error = 66; /*text chunk too large*/
-        goto cleanup;
-      }
-      if(lodepng_strlen(info.text_keys[i]) < 1) {
-        state->error = 67; /*text chunk too small*/
-        goto cleanup;
-      }
-      if(state->encoder.text_compression) {
-        state->error = addChunk_zTXt(&outv, info.text_keys[i], info.text_strings[i], &state->encoder.zlibsettings);
-        if(state->error) goto cleanup;
-      } else {
-        state->error = addChunk_tEXt(&outv, info.text_keys[i], info.text_strings[i]);
-        if(state->error) goto cleanup;
-      }
-    }
-    /*LodePNG version id in text chunk*/
-    if(state->encoder.add_id) {
-      unsigned already_added_id_text = 0;
-      for(i = 0; i != info.text_num; ++i) {
-        const char* k = info.text_keys[i];
-        /* Could use strcmp, but we're not calling or reimplementing this C library function for this use only */
-        if(k[0] == 'L' && k[1] == 'o' && k[2] == 'd' && k[3] == 'e' &&
-           k[4] == 'P' && k[5] == 'N' && k[6] == 'G' && k[7] == '\0') {
-          already_added_id_text = 1;
-          break;
-        }
-      }
-      if(already_added_id_text == 0) {
-        state->error = addChunk_tEXt(&outv, "LodePNG", LODEPNG_VERSION_STRING); /*it's shorter as tEXt than as zTXt chunk*/
-        if(state->error) goto cleanup;
-      }
-    }
-    /*iTXt*/
-    for(i = 0; i != info.itext_num; ++i) {
-      if(lodepng_strlen(info.itext_keys[i]) > 79) {
-        state->error = 66; /*text chunk too large*/
-        goto cleanup;
-      }
-      if(lodepng_strlen(info.itext_keys[i]) < 1) {
-        state->error = 67; /*text chunk too small*/
-        goto cleanup;
-      }
-      state->error = addChunk_iTXt(
-          &outv, state->encoder.text_compression,
-          info.itext_keys[i], info.itext_langtags[i], info.itext_transkeys[i], info.itext_strings[i],
-          &state->encoder.zlibsettings);
-      if(state->error) goto cleanup;
-    }
-
-    /*unknown chunks between IDAT and IEND*/
-    if(info.unknown_chunks_data[2]) {
-      state->error = addUnknownChunks(&outv, info.unknown_chunks_data[2], info.unknown_chunks_size[2]);
-      if(state->error) goto cleanup;
-    }
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-    state->error = addChunk_IEND(&outv);
-    if(state->error) goto cleanup;
-  }
-
-cleanup:
-  lodepng_info_cleanup(&info);
-  lodepng_free(data);
-  lodepng_color_mode_cleanup(&auto_color);
-
-  /*instead of cleaning the vector up, give it to the output*/
-  *out = outv.data;
-  *outsize = outv.size;
-
-  return state->error;
-}
-
-unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize, const unsigned char* image,
-                               unsigned w, unsigned h, LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned error;
-  LodePNGState state;
-  lodepng_state_init(&state);
-  state.info_raw.colortype = colortype;
-  state.info_raw.bitdepth = bitdepth;
-  state.info_png.color.colortype = colortype;
-  state.info_png.color.bitdepth = bitdepth;
-  lodepng_encode(out, outsize, image, w, h, &state);
-  error = state.error;
-  lodepng_state_cleanup(&state);
-  return error;
-}
-
-unsigned lodepng_encode32(unsigned char** out, size_t* outsize, const unsigned char* image, unsigned w, unsigned h) {
-  return lodepng_encode_memory(out, outsize, image, w, h, LCT_RGBA, 8);
-}
-
-unsigned lodepng_encode24(unsigned char** out, size_t* outsize, const unsigned char* image, unsigned w, unsigned h) {
-  return lodepng_encode_memory(out, outsize, image, w, h, LCT_RGB, 8);
-}
-
-#ifdef LODEPNG_COMPILE_DISK
-unsigned lodepng_encode_file(const char* filename, const unsigned char* image, unsigned w, unsigned h,
-                             LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned char* buffer;
-  size_t buffersize;
-  unsigned error = lodepng_encode_memory(&buffer, &buffersize, image, w, h, colortype, bitdepth);
-  if(!error) error = lodepng_save_file(buffer, buffersize, filename);
-  lodepng_free(buffer);
-  return error;
-}
-
-unsigned lodepng_encode32_file(const char* filename, const unsigned char* image, unsigned w, unsigned h) {
-  return lodepng_encode_file(filename, image, w, h, LCT_RGBA, 8);
-}
-
-unsigned lodepng_encode24_file(const char* filename, const unsigned char* image, unsigned w, unsigned h) {
-  return lodepng_encode_file(filename, image, w, h, LCT_RGB, 8);
-}
-#endif /*LODEPNG_COMPILE_DISK*/
-
-void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings) {
-  lodepng_compress_settings_init(&settings->zlibsettings);
-  settings->filter_palette_zero = 1;
-  settings->filter_strategy = LFS_MINSUM;
-  settings->auto_convert = 1;
-  settings->force_palette = 0;
-  settings->predefined_filters = 0;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  settings->add_id = 0;
-  settings->text_compression = 1;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-}
-
-#endif /*LODEPNG_COMPILE_ENCODER*/
-#endif /*LODEPNG_COMPILE_PNG*/
-
-#ifdef LODEPNG_COMPILE_ERROR_TEXT
-/*
-This returns the description of a numerical error code in English. This is also
-the documentation of all the error codes.
-*/
-const char* lodepng_error_text(unsigned code) {
-  switch(code) {
-    case 0: return "no error, everything went ok";
-    case 1: return "nothing done yet"; /*the Encoder/Decoder has done nothing yet, error checking makes no sense yet*/
-    case 10: return "end of input memory reached without huffman end code"; /*while huffman decoding*/
-    case 11: return "error in code tree made it jump outside of huffman tree"; /*while huffman decoding*/
-    case 13: return "problem while processing dynamic deflate block";
-    case 14: return "problem while processing dynamic deflate block";
-    case 15: return "problem while processing dynamic deflate block";
-    /*this error could happen if there are only 0 or 1 symbols present in the huffman code:*/
-    case 16: return "invalid code while processing dynamic deflate block";
-    case 17: return "end of out buffer memory reached while inflating";
-    case 18: return "invalid distance code while inflating";
-    case 19: return "end of out buffer memory reached while inflating";
-    case 20: return "invalid deflate block BTYPE encountered while decoding";
-    case 21: return "NLEN is not ones complement of LEN in a deflate block";
-
-    /*end of out buffer memory reached while inflating:
-    This can happen if the inflated deflate data is longer than the amount of bytes required to fill up
-    all the pixels of the image, given the color depth and image dimensions. Something that doesn't
-    happen in a normal, well encoded, PNG image.*/
-    case 22: return "end of out buffer memory reached while inflating";
-    case 23: return "end of in buffer memory reached while inflating";
-    case 24: return "invalid FCHECK in zlib header";
-    case 25: return "invalid compression method in zlib header";
-    case 26: return "FDICT encountered in zlib header while it's not used for PNG";
-    case 27: return "PNG file is smaller than a PNG header";
-    /*Checks the magic file header, the first 8 bytes of the PNG file*/
-    case 28: return "incorrect PNG signature, it's no PNG or corrupted";
-    case 29: return "first chunk is not the header chunk";
-    case 30: return "chunk length too large, chunk broken off at end of file";
-    case 31: return "illegal PNG color type or bpp";
-    case 32: return "illegal PNG compression method";
-    case 33: return "illegal PNG filter method";
-    case 34: return "illegal PNG interlace method";
-    case 35: return "chunk length of a chunk is too large or the chunk too small";
-    case 36: return "illegal PNG filter type encountered";
-    case 37: return "illegal bit depth for this color type given";
-    case 38: return "the palette is too small or too big"; /*0, or more than 256 colors*/
-    case 39: return "tRNS chunk before PLTE or has more entries than palette size";
-    case 40: return "tRNS chunk has wrong size for grayscale image";
-    case 41: return "tRNS chunk has wrong size for RGB image";
-    case 42: return "tRNS chunk appeared while it was not allowed for this color type";
-    case 43: return "bKGD chunk has wrong size for palette image";
-    case 44: return "bKGD chunk has wrong size for grayscale image";
-    case 45: return "bKGD chunk has wrong size for RGB image";
-    case 48: return "empty input buffer given to decoder. Maybe caused by non-existing file?";
-    case 49: return "jumped past memory while generating dynamic huffman tree";
-    case 50: return "jumped past memory while generating dynamic huffman tree";
-    case 51: return "jumped past memory while inflating huffman block";
-    case 52: return "jumped past memory while inflating";
-    case 53: return "size of zlib data too small";
-    case 54: return "repeat symbol in tree while there was no value symbol yet";
-    /*jumped past tree while generating huffman tree, this could be when the
-    tree will have more leaves than symbols after generating it out of the
-    given lengths. They call this an oversubscribed dynamic bit lengths tree in zlib.*/
-    case 55: return "jumped past tree while generating huffman tree";
-    case 56: return "given output image colortype or bitdepth not supported for color conversion";
-    case 57: return "invalid CRC encountered (checking CRC can be disabled)";
-    case 58: return "invalid ADLER32 encountered (checking ADLER32 can be disabled)";
-    case 59: return "requested color conversion not supported";
-    case 60: return "invalid window size given in the settings of the encoder (must be 0-32768)";
-    case 61: return "invalid BTYPE given in the settings of the encoder (only 0, 1 and 2 are allowed)";
-    /*LodePNG leaves the choice of RGB to grayscale conversion formula to the user.*/
-    case 62: return "conversion from color to grayscale not supported";
-    /*(2^31-1)*/
-    case 63: return "length of a chunk too long, max allowed for PNG is 2147483647 bytes per chunk";
-    /*this would result in the inability of a deflated block to ever contain an end code. It must be at least 1.*/
-    case 64: return "the length of the END symbol 256 in the Huffman tree is 0";
-    case 66: return "the length of a text chunk keyword given to the encoder is longer than the maximum of 79 bytes";
-    case 67: return "the length of a text chunk keyword given to the encoder is smaller than the minimum of 1 byte";
-    case 68: return "tried to encode a PLTE chunk with a palette that has less than 1 or more than 256 colors";
-    case 69: return "unknown chunk type with 'critical' flag encountered by the decoder";
-    case 71: return "invalid interlace mode given to encoder (must be 0 or 1)";
-    case 72: return "while decoding, invalid compression method encountering in zTXt or iTXt chunk (it must be 0)";
-    case 73: return "invalid tIME chunk size";
-    case 74: return "invalid pHYs chunk size";
-    /*length could be wrong, or data chopped off*/
-    case 75: return "no null termination char found while decoding text chunk";
-    case 76: return "iTXt chunk too short to contain required bytes";
-    case 77: return "integer overflow in buffer size";
-    case 78: return "failed to open file for reading"; /*file doesn't exist or couldn't be opened for reading*/
-    case 79: return "failed to open file for writing";
-    case 80: return "tried creating a tree of 0 symbols";
-    case 81: return "lazy matching at pos 0 is impossible";
-    case 82: return "color conversion to palette requested while a color isn't in palette, or index out of bounds";
-    case 83: return "memory allocation failed";
-    case 84: return "given image too small to contain all pixels to be encoded";
-    case 86: return "impossible offset in lz77 encoding (internal bug)";
-    case 87: return "must provide custom zlib function pointer if LODEPNG_COMPILE_ZLIB is not defined";
-    case 88: return "invalid filter strategy given for LodePNGEncoderSettings.filter_strategy";
-    case 89: return "text chunk keyword too short or long: must have size 1-79";
-    /*the windowsize in the LodePNGCompressSettings. Requiring POT(==> & instead of %) makes encoding 12% faster.*/
-    case 90: return "windowsize must be a power of two";
-    case 91: return "invalid decompressed idat size";
-    case 92: return "integer overflow due to too many pixels";
-    case 93: return "zero width or height is invalid";
-    case 94: return "header chunk must have a size of 13 bytes";
-    case 95: return "integer overflow with combined idat chunk size";
-    case 96: return "invalid gAMA chunk size";
-    case 97: return "invalid cHRM chunk size";
-    case 98: return "invalid sRGB chunk size";
-    case 99: return "invalid sRGB rendering intent";
-    case 100: return "invalid ICC profile color type, the PNG specification only allows RGB or GRAY";
-    case 101: return "PNG specification does not allow RGB ICC profile on gray color types and vice versa";
-    case 102: return "not allowed to set grayscale ICC profile with colored pixels by PNG specification";
-    case 103: return "invalid palette index in bKGD chunk. Maybe it came before PLTE chunk?";
-    case 104: return "invalid bKGD color while encoding (e.g. palette index out of range)";
-    case 105: return "integer overflow of bitsize";
-    case 106: return "PNG file must have PLTE chunk if color type is palette";
-    case 107: return "color convert from palette mode requested without setting the palette data in it";
-    case 108: return "tried to add more than 256 values to a palette";
-    /*this limit can be configured in LodePNGDecompressSettings*/
-    case 109: return "tried to decompress zlib or deflate data larger than desired max_output_size";
-    case 110: return "custom zlib or inflate decompression failed";
-    case 111: return "custom zlib or deflate compression failed";
-    /*max text size limit can be configured in LodePNGDecoderSettings. This error prevents
-    unreasonable memory consumption when decoding due to impossibly large text sizes.*/
-    case 112: return "compressed text unreasonably large";
-    /*max ICC size limit can be configured in LodePNGDecoderSettings. This error prevents
-    unreasonable memory consumption when decoding due to impossibly large ICC profile*/
-    case 113: return "ICC profile unreasonably large";
-    case 114: return "sBIT chunk has wrong size for the color type of the image";
-    case 115: return "sBIT value out of range";
-  }
-  return "unknown error code";
-}
-#endif /*LODEPNG_COMPILE_ERROR_TEXT*/
-
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* // C++ Wrapper                                                          // */
-/* ////////////////////////////////////////////////////////////////////////// */
-/* ////////////////////////////////////////////////////////////////////////// */
-
-#ifdef LODEPNG_COMPILE_CPP
-namespace lodepng {
-
-#ifdef LODEPNG_COMPILE_DISK
-unsigned load_file(std::vector<unsigned char>& buffer, const std::string& filename) {
-  long size = lodepng_filesize(filename.c_str());
-  if(size < 0) return 78;
-  buffer.resize((size_t)size);
-  return size == 0 ? 0 : lodepng_buffer_file(&buffer[0], (size_t)size, filename.c_str());
-}
-
-/*write given buffer to the file, overwriting the file, it doesn't append to it.*/
-unsigned save_file(const std::vector<unsigned char>& buffer, const std::string& filename) {
-  return lodepng_save_file(buffer.empty() ? 0 : &buffer[0], buffer.size(), filename.c_str());
-}
-#endif /* LODEPNG_COMPILE_DISK */
-
-#ifdef LODEPNG_COMPILE_ZLIB
-#ifdef LODEPNG_COMPILE_DECODER
-unsigned decompress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
-                    const LodePNGDecompressSettings& settings) {
-  unsigned char* buffer = 0;
-  size_t buffersize = 0;
-  unsigned error = zlib_decompress(&buffer, &buffersize, 0, in, insize, &settings);
-  if(buffer) {
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-    lodepng_free(buffer);
-  }
-  return error;
-}
-
-unsigned decompress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
-                    const LodePNGDecompressSettings& settings) {
-  return decompress(out, in.empty() ? 0 : &in[0], in.size(), settings);
-}
-#endif /* LODEPNG_COMPILE_DECODER */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-unsigned compress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
-                  const LodePNGCompressSettings& settings) {
-  unsigned char* buffer = 0;
-  size_t buffersize = 0;
-  unsigned error = zlib_compress(&buffer, &buffersize, in, insize, &settings);
-  if(buffer) {
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-    lodepng_free(buffer);
-  }
-  return error;
-}
-
-unsigned compress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
-                  const LodePNGCompressSettings& settings) {
-  return compress(out, in.empty() ? 0 : &in[0], in.size(), settings);
-}
-#endif /* LODEPNG_COMPILE_ENCODER */
-#endif /* LODEPNG_COMPILE_ZLIB */
-
-
-#ifdef LODEPNG_COMPILE_PNG
-
-State::State() {
-  lodepng_state_init(this);
-}
-
-State::State(const State& other) {
-  lodepng_state_init(this);
-  lodepng_state_copy(this, &other);
-}
-
-State::~State() {
-  lodepng_state_cleanup(this);
-}
-
-State& State::operator=(const State& other) {
-  lodepng_state_copy(this, &other);
-  return *this;
-}
-
-#ifdef LODEPNG_COMPILE_DECODER
-
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h, const unsigned char* in,
-                size_t insize, LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned char* buffer = 0;
-  unsigned error = lodepng_decode_memory(&buffer, &w, &h, in, insize, colortype, bitdepth);
-  if(buffer && !error) {
-    State state;
-    state.info_raw.colortype = colortype;
-    state.info_raw.bitdepth = bitdepth;
-    size_t buffersize = lodepng_get_raw_size(w, h, &state.info_raw);
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-  }
-  lodepng_free(buffer);
-  return error;
-}
-
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                const std::vector<unsigned char>& in, LodePNGColorType colortype, unsigned bitdepth) {
-  return decode(out, w, h, in.empty() ? 0 : &in[0], (unsigned)in.size(), colortype, bitdepth);
-}
-
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                State& state,
-                const unsigned char* in, size_t insize) {
-  unsigned char* buffer = NULL;
-  unsigned error = lodepng_decode(&buffer, &w, &h, &state, in, insize);
-  if(buffer && !error) {
-    size_t buffersize = lodepng_get_raw_size(w, h, &state.info_raw);
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-  }
-  lodepng_free(buffer);
-  return error;
-}
-
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                State& state,
-                const std::vector<unsigned char>& in) {
-  return decode(out, w, h, state, in.empty() ? 0 : &in[0], in.size());
-}
-
-#ifdef LODEPNG_COMPILE_DISK
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h, const std::string& filename,
-                LodePNGColorType colortype, unsigned bitdepth) {
-  std::vector<unsigned char> buffer;
-  /* safe output values in case error happens */
-  w = h = 0;
-  unsigned error = load_file(buffer, filename);
-  if(error) return error;
-  return decode(out, w, h, buffer, colortype, bitdepth);
-}
-#endif /* LODEPNG_COMPILE_DECODER */
-#endif /* LODEPNG_COMPILE_DISK */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-unsigned encode(std::vector<unsigned char>& out, const unsigned char* in, unsigned w, unsigned h,
-                LodePNGColorType colortype, unsigned bitdepth) {
-  unsigned char* buffer;
-  size_t buffersize;
-  unsigned error = lodepng_encode_memory(&buffer, &buffersize, in, w, h, colortype, bitdepth);
-  if(buffer) {
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-    lodepng_free(buffer);
-  }
-  return error;
-}
-
-unsigned encode(std::vector<unsigned char>& out,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                LodePNGColorType colortype, unsigned bitdepth) {
-  if(lodepng_get_raw_size_lct(w, h, colortype, bitdepth) > in.size()) return 84;
-  return encode(out, in.empty() ? 0 : &in[0], w, h, colortype, bitdepth);
-}
-
-unsigned encode(std::vector<unsigned char>& out,
-                const unsigned char* in, unsigned w, unsigned h,
-                State& state) {
-  unsigned char* buffer;
-  size_t buffersize;
-  unsigned error = lodepng_encode(&buffer, &buffersize, in, w, h, &state);
-  if(buffer) {
-    out.insert(out.end(), buffer, &buffer[buffersize]);
-    lodepng_free(buffer);
-  }
-  return error;
-}
-
-unsigned encode(std::vector<unsigned char>& out,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                State& state) {
-  if(lodepng_get_raw_size(w, h, &state.info_raw) > in.size()) return 84;
-  return encode(out, in.empty() ? 0 : &in[0], w, h, state);
-}
-
-#ifdef LODEPNG_COMPILE_DISK
-unsigned encode(const std::string& filename,
-                const unsigned char* in, unsigned w, unsigned h,
-                LodePNGColorType colortype, unsigned bitdepth) {
-  std::vector<unsigned char> buffer;
-  unsigned error = encode(buffer, in, w, h, colortype, bitdepth);
-  if(!error) error = save_file(buffer, filename);
-  return error;
-}
-
-unsigned encode(const std::string& filename,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                LodePNGColorType colortype, unsigned bitdepth) {
-  if(lodepng_get_raw_size_lct(w, h, colortype, bitdepth) > in.size()) return 84;
-  return encode(filename, in.empty() ? 0 : &in[0], w, h, colortype, bitdepth);
-}
-#endif /* LODEPNG_COMPILE_DISK */
-#endif /* LODEPNG_COMPILE_ENCODER */
-#endif /* LODEPNG_COMPILE_PNG */
-} /* namespace lodepng */
-#endif /*LODEPNG_COMPILE_CPP*/
diff --git a/libs/litehtml/containers/test/lodepng.h b/libs/litehtml/containers/test/lodepng.h
deleted file mode 100644
index 7f0190d8d4..0000000000
--- a/libs/litehtml/containers/test/lodepng.h
+++ /dev/null
@@ -1,2085 +0,0 @@
-/*
-LodePNG version 20221108
-
-Copyright (c) 2005-2022 Lode Vandevenne
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-    1. The origin of this software must not be misrepresented; you must not
-    claim that you wrote the original software. If you use this software
-    in a product, an acknowledgment in the product documentation would be
-    appreciated but is not required.
-
-    2. Altered source versions must be plainly marked as such, and must not be
-    misrepresented as being the original software.
-
-    3. This notice may not be removed or altered from any source
-    distribution.
-*/
-
-#ifndef LODEPNG_H
-#define LODEPNG_H
-
-#include <string.h> /*for size_t*/
-
-extern const char* LODEPNG_VERSION_STRING;
-
-/*
-The following #defines are used to create code sections. They can be disabled
-to disable code sections, which can give faster compile time and smaller binary.
-The "NO_COMPILE" defines are designed to be used to pass as defines to the
-compiler command to disable them without modifying this header, e.g.
--DLODEPNG_NO_COMPILE_ZLIB for gcc or clang.
-*/
-/*deflate & zlib. If disabled, you must specify alternative zlib functions in
-the custom_zlib field of the compress and decompress settings*/
-#ifndef LODEPNG_NO_COMPILE_ZLIB
-/*pass -DLODEPNG_NO_COMPILE_ZLIB to the compiler to disable this, or comment out LODEPNG_COMPILE_ZLIB below*/
-#define LODEPNG_COMPILE_ZLIB
-#endif
-
-/*png encoder and png decoder*/
-#ifndef LODEPNG_NO_COMPILE_PNG
-/*pass -DLODEPNG_NO_COMPILE_PNG to the compiler to disable this, or comment out LODEPNG_COMPILE_PNG below*/
-#define LODEPNG_COMPILE_PNG
-#endif
-
-/*deflate&zlib decoder and png decoder*/
-#ifndef LODEPNG_NO_COMPILE_DECODER
-/*pass -DLODEPNG_NO_COMPILE_DECODER to the compiler to disable this, or comment out LODEPNG_COMPILE_DECODER below*/
-#define LODEPNG_COMPILE_DECODER
-#endif
-
-/*deflate&zlib encoder and png encoder*/
-#ifndef LODEPNG_NO_COMPILE_ENCODER
-/*pass -DLODEPNG_NO_COMPILE_ENCODER to the compiler to disable this, or comment out LODEPNG_COMPILE_ENCODER below*/
-#define LODEPNG_COMPILE_ENCODER
-#endif
-
-/*the optional built in harddisk file loading and saving functions*/
-#ifndef LODEPNG_NO_COMPILE_DISK
-/*pass -DLODEPNG_NO_COMPILE_DISK to the compiler to disable this, or comment out LODEPNG_COMPILE_DISK below*/
-#define LODEPNG_COMPILE_DISK
-#endif
-
-/*support for chunks other than IHDR, IDAT, PLTE, tRNS, IEND: ancillary and unknown chunks*/
-#ifndef LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS
-/*pass -DLODEPNG_NO_COMPILE_ANCILLARY_CHUNKS to the compiler to disable this,
-or comment out LODEPNG_COMPILE_ANCILLARY_CHUNKS below*/
-#define LODEPNG_COMPILE_ANCILLARY_CHUNKS
-#endif
-
-/*ability to convert error numerical codes to English text string*/
-#ifndef LODEPNG_NO_COMPILE_ERROR_TEXT
-/*pass -DLODEPNG_NO_COMPILE_ERROR_TEXT to the compiler to disable this,
-or comment out LODEPNG_COMPILE_ERROR_TEXT below*/
-#define LODEPNG_COMPILE_ERROR_TEXT
-#endif
-
-/*Compile the default allocators (C's free, malloc and realloc). If you disable this,
-you can define the functions lodepng_free, lodepng_malloc and lodepng_realloc in your
-source files with custom allocators.*/
-#ifndef LODEPNG_NO_COMPILE_ALLOCATORS
-/*pass -DLODEPNG_NO_COMPILE_ALLOCATORS to the compiler to disable the built-in ones,
-or comment out LODEPNG_COMPILE_ALLOCATORS below*/
-#define LODEPNG_COMPILE_ALLOCATORS
-#endif
-
-/*Disable built-in CRC function, in that case a custom implementation of
-lodepng_crc32 must be defined externally so that it can be linked in.*/
-#ifndef LODEPNG_NO_COMPILE_CRC
-/*pass -DLODEPNG_NO_COMPILE_CRC to the compiler to disable the built-in one,
-or comment out LODEPNG_COMPILE_CRC below*/
-#define LODEPNG_COMPILE_CRC
-#endif
-
-/*compile the C++ version (you can disable the C++ wrapper here even when compiling for C++)*/
-#ifdef __cplusplus
-#ifndef LODEPNG_NO_COMPILE_CPP
-/*pass -DLODEPNG_NO_COMPILE_CPP to the compiler to disable C++ (not needed if a C-only compiler),
-or comment out LODEPNG_COMPILE_CPP below*/
-#define LODEPNG_COMPILE_CPP
-#endif
-#endif
-
-#ifdef LODEPNG_COMPILE_CPP
-#include <vector>
-#include <string>
-#endif /*LODEPNG_COMPILE_CPP*/
-
-#ifdef LODEPNG_COMPILE_PNG
-/*The PNG color types (also used for raw image).*/
-typedef enum LodePNGColorType {
-  LCT_GREY = 0, /*grayscale: 1,2,4,8,16 bit*/
-  LCT_RGB = 2, /*RGB: 8,16 bit*/
-  LCT_PALETTE = 3, /*palette: 1,2,4,8 bit*/
-  LCT_GREY_ALPHA = 4, /*grayscale with alpha: 8,16 bit*/
-  LCT_RGBA = 6, /*RGB with alpha: 8,16 bit*/
-  /*LCT_MAX_OCTET_VALUE lets the compiler allow this enum to represent any invalid
-  byte value from 0 to 255 that could be present in an invalid PNG file header. Do
-  not use, compare with or set the name LCT_MAX_OCTET_VALUE, instead either use
-  the valid color type names above, or numeric values like 1 or 7 when checking for
-  particular disallowed color type byte values, or cast to integer to print it.*/
-  LCT_MAX_OCTET_VALUE = 255
-} LodePNGColorType;
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*
-Converts PNG data in memory to raw pixel data.
-out: Output parameter. Pointer to buffer that will contain the raw pixel data.
-     After decoding, its size is w * h * (bytes per pixel) bytes larger than
-     initially. Bytes per pixel depends on colortype and bitdepth.
-     Must be freed after usage with free(*out).
-     Note: for 16-bit per channel colors, uses big endian format like PNG does.
-w: Output parameter. Pointer to width of pixel data.
-h: Output parameter. Pointer to height of pixel data.
-in: Memory buffer with the PNG file.
-insize: size of the in buffer.
-colortype: the desired color type for the raw output image. See explanation on PNG color types.
-bitdepth: the desired bit depth for the raw output image. See explanation on PNG color types.
-Return value: LodePNG error code (0 means no error).
-*/
-unsigned lodepng_decode_memory(unsigned char** out, unsigned* w, unsigned* h,
-                               const unsigned char* in, size_t insize,
-                               LodePNGColorType colortype, unsigned bitdepth);
-
-/*Same as lodepng_decode_memory, but always decodes to 32-bit RGBA raw image*/
-unsigned lodepng_decode32(unsigned char** out, unsigned* w, unsigned* h,
-                          const unsigned char* in, size_t insize);
-
-/*Same as lodepng_decode_memory, but always decodes to 24-bit RGB raw image*/
-unsigned lodepng_decode24(unsigned char** out, unsigned* w, unsigned* h,
-                          const unsigned char* in, size_t insize);
-
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Load PNG from disk, from file with given name.
-Same as the other decode functions, but instead takes a filename as input.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.*/
-unsigned lodepng_decode_file(unsigned char** out, unsigned* w, unsigned* h,
-                             const char* filename,
-                             LodePNGColorType colortype, unsigned bitdepth);
-
-/*Same as lodepng_decode_file, but always decodes to 32-bit RGBA raw image.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.*/
-unsigned lodepng_decode32_file(unsigned char** out, unsigned* w, unsigned* h,
-                               const char* filename);
-
-/*Same as lodepng_decode_file, but always decodes to 24-bit RGB raw image.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.*/
-unsigned lodepng_decode24_file(unsigned char** out, unsigned* w, unsigned* h,
-                               const char* filename);
-#endif /*LODEPNG_COMPILE_DISK*/
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*
-Converts raw pixel data into a PNG image in memory. The colortype and bitdepth
-  of the output PNG image cannot be chosen, they are automatically determined
-  by the colortype, bitdepth and content of the input pixel data.
-  Note: for 16-bit per channel colors, needs big endian format like PNG does.
-out: Output parameter. Pointer to buffer that will contain the PNG image data.
-     Must be freed after usage with free(*out).
-outsize: Output parameter. Pointer to the size in bytes of the out buffer.
-image: The raw pixel data to encode. The size of this buffer should be
-       w * h * (bytes per pixel), bytes per pixel depends on colortype and bitdepth.
-w: width of the raw pixel data in pixels.
-h: height of the raw pixel data in pixels.
-colortype: the color type of the raw input image. See explanation on PNG color types.
-bitdepth: the bit depth of the raw input image. See explanation on PNG color types.
-Return value: LodePNG error code (0 means no error).
-*/
-unsigned lodepng_encode_memory(unsigned char** out, size_t* outsize,
-                               const unsigned char* image, unsigned w, unsigned h,
-                               LodePNGColorType colortype, unsigned bitdepth);
-
-/*Same as lodepng_encode_memory, but always encodes from 32-bit RGBA raw image.*/
-unsigned lodepng_encode32(unsigned char** out, size_t* outsize,
-                          const unsigned char* image, unsigned w, unsigned h);
-
-/*Same as lodepng_encode_memory, but always encodes from 24-bit RGB raw image.*/
-unsigned lodepng_encode24(unsigned char** out, size_t* outsize,
-                          const unsigned char* image, unsigned w, unsigned h);
-
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Converts raw pixel data into a PNG file on disk.
-Same as the other encode functions, but instead takes a filename as output.
-
-NOTE: This overwrites existing files without warning!
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and encode in-memory.*/
-unsigned lodepng_encode_file(const char* filename,
-                             const unsigned char* image, unsigned w, unsigned h,
-                             LodePNGColorType colortype, unsigned bitdepth);
-
-/*Same as lodepng_encode_file, but always encodes from 32-bit RGBA raw image.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and encode in-memory.*/
-unsigned lodepng_encode32_file(const char* filename,
-                               const unsigned char* image, unsigned w, unsigned h);
-
-/*Same as lodepng_encode_file, but always encodes from 24-bit RGB raw image.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and encode in-memory.*/
-unsigned lodepng_encode24_file(const char* filename,
-                               const unsigned char* image, unsigned w, unsigned h);
-#endif /*LODEPNG_COMPILE_DISK*/
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-
-#ifdef LODEPNG_COMPILE_CPP
-namespace lodepng {
-#ifdef LODEPNG_COMPILE_DECODER
-/*Same as lodepng_decode_memory, but decodes to an std::vector. The colortype
-is the format to output the pixels to. Default is RGBA 8-bit per channel.*/
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                const unsigned char* in, size_t insize,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                const std::vector<unsigned char>& in,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Converts PNG file from disk to raw pixel data in memory.
-Same as the other decode functions, but instead takes a filename as input.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.
-*/
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                const std::string& filename,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-#endif /* LODEPNG_COMPILE_DISK */
-#endif /* LODEPNG_COMPILE_DECODER */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*Same as lodepng_encode_memory, but encodes to an std::vector. colortype
-is that of the raw input data. The output PNG color type will be auto chosen.*/
-unsigned encode(std::vector<unsigned char>& out,
-                const unsigned char* in, unsigned w, unsigned h,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-unsigned encode(std::vector<unsigned char>& out,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Converts 32-bit RGBA raw pixel data into a PNG file on disk.
-Same as the other encode functions, but instead takes a filename as output.
-
-NOTE: This overwrites existing files without warning!
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.
-*/
-unsigned encode(const std::string& filename,
-                const unsigned char* in, unsigned w, unsigned h,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-unsigned encode(const std::string& filename,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                LodePNGColorType colortype = LCT_RGBA, unsigned bitdepth = 8);
-#endif /* LODEPNG_COMPILE_DISK */
-#endif /* LODEPNG_COMPILE_ENCODER */
-} /* namespace lodepng */
-#endif /*LODEPNG_COMPILE_CPP*/
-#endif /*LODEPNG_COMPILE_PNG*/
-
-#ifdef LODEPNG_COMPILE_ERROR_TEXT
-/*Returns an English description of the numerical error code.*/
-const char* lodepng_error_text(unsigned code);
-#endif /*LODEPNG_COMPILE_ERROR_TEXT*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*Settings for zlib decompression*/
-typedef struct LodePNGDecompressSettings LodePNGDecompressSettings;
-struct LodePNGDecompressSettings {
-  /* Check LodePNGDecoderSettings for more ignorable errors such as ignore_crc */
-  unsigned ignore_adler32; /*if 1, continue and don't give an error message if the Adler32 checksum is corrupted*/
-  unsigned ignore_nlen; /*ignore complement of len checksum in uncompressed blocks*/
-
-  /*Maximum decompressed size, beyond this the decoder may (and is encouraged to) stop decoding,
-  return an error, output a data size > max_output_size and all the data up to that point. This is
-  not hard limit nor a guarantee, but can prevent excessive memory usage. This setting is
-  ignored by the PNG decoder, but is used by the deflate/zlib decoder and can be used by custom ones.
-  Set to 0 to impose no limit (the default).*/
-  size_t max_output_size;
-
-  /*use custom zlib decoder instead of built in one (default: null).
-  Should return 0 if success, any non-0 if error (numeric value not exposed).*/
-  unsigned (*custom_zlib)(unsigned char**, size_t*,
-                          const unsigned char*, size_t,
-                          const LodePNGDecompressSettings*);
-  /*use custom deflate decoder instead of built in one (default: null)
-  if custom_zlib is not null, custom_inflate is ignored (the zlib format uses deflate).
-  Should return 0 if success, any non-0 if error (numeric value not exposed).*/
-  unsigned (*custom_inflate)(unsigned char**, size_t*,
-                             const unsigned char*, size_t,
-                             const LodePNGDecompressSettings*);
-
-  const void* custom_context; /*optional custom settings for custom functions*/
-};
-
-extern const LodePNGDecompressSettings lodepng_default_decompress_settings;
-void lodepng_decompress_settings_init(LodePNGDecompressSettings* settings);
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*
-Settings for zlib compression. Tweaking these settings tweaks the balance
-between speed and compression ratio.
-*/
-typedef struct LodePNGCompressSettings LodePNGCompressSettings;
-struct LodePNGCompressSettings /*deflate = compress*/ {
-  /*LZ77 related settings*/
-  unsigned btype; /*the block type for LZ (0, 1, 2 or 3, see zlib standard). Should be 2 for proper compression.*/
-  unsigned use_lz77; /*whether or not to use LZ77. Should be 1 for proper compression.*/
-  unsigned windowsize; /*must be a power of two <= 32768. higher compresses more but is slower. Default value: 2048.*/
-  unsigned minmatch; /*minimum lz77 length. 3 is normally best, 6 can be better for some PNGs. Default: 0*/
-  unsigned nicematch; /*stop searching if >= this length found. Set to 258 for best compression. Default: 128*/
-  unsigned lazymatching; /*use lazy matching: better compression but a bit slower. Default: true*/
-
-  /*use custom zlib encoder instead of built in one (default: null)*/
-  unsigned (*custom_zlib)(unsigned char**, size_t*,
-                          const unsigned char*, size_t,
-                          const LodePNGCompressSettings*);
-  /*use custom deflate encoder instead of built in one (default: null)
-  if custom_zlib is used, custom_deflate is ignored since only the built in
-  zlib function will call custom_deflate*/
-  unsigned (*custom_deflate)(unsigned char**, size_t*,
-                             const unsigned char*, size_t,
-                             const LodePNGCompressSettings*);
-
-  const void* custom_context; /*optional custom settings for custom functions*/
-};
-
-extern const LodePNGCompressSettings lodepng_default_compress_settings;
-void lodepng_compress_settings_init(LodePNGCompressSettings* settings);
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#ifdef LODEPNG_COMPILE_PNG
-/*
-Color mode of an image. Contains all information required to decode the pixel
-bits to RGBA colors. This information is the same as used in the PNG file
-format, and is used both for PNG and raw image data in LodePNG.
-*/
-typedef struct LodePNGColorMode {
-  /*header (IHDR)*/
-  LodePNGColorType colortype; /*color type, see PNG standard or documentation further in this header file*/
-  unsigned bitdepth;  /*bits per sample, see PNG standard or documentation further in this header file*/
-
-  /*
-  palette (PLTE and tRNS)
-
-  Dynamically allocated with the colors of the palette, including alpha.
-  This field may not be allocated directly, use lodepng_color_mode_init first,
-  then lodepng_palette_add per color to correctly initialize it (to ensure size
-  of exactly 1024 bytes).
-
-  The alpha channels must be set as well, set them to 255 for opaque images.
-
-  When decoding, with the default settings you can ignore this palette, since
-  LodePNG already fills the palette colors in the pixels of the raw RGBA output,
-  but when decoding to the original PNG color mode it is needed to reconstruct
-  the colors.
-
-  The palette is only supported for color type 3.
-  */
-  unsigned char* palette; /*palette in RGBARGBA... order. Must be either 0, or when allocated must have 1024 bytes*/
-  size_t palettesize; /*palette size in number of colors (amount of used bytes is 4 * palettesize)*/
-
-  /*
-  transparent color key (tRNS)
-
-  This color uses the same bit depth as the bitdepth value in this struct, which can be 1-bit to 16-bit.
-  For grayscale PNGs, r, g and b will all 3 be set to the same.
-
-  When decoding, by default you can ignore this information, since LodePNG sets
-  pixels with this key to transparent already in the raw RGBA output.
-
-  The color key is only supported for color types 0 and 2.
-  */
-  unsigned key_defined; /*is a transparent color key given? 0 = false, 1 = true*/
-  unsigned key_r;       /*red/grayscale component of color key*/
-  unsigned key_g;       /*green component of color key*/
-  unsigned key_b;       /*blue component of color key*/
-} LodePNGColorMode;
-
-/*init, cleanup and copy functions to use with this struct*/
-void lodepng_color_mode_init(LodePNGColorMode* info);
-void lodepng_color_mode_cleanup(LodePNGColorMode* info);
-/*return value is error code (0 means no error)*/
-unsigned lodepng_color_mode_copy(LodePNGColorMode* dest, const LodePNGColorMode* source);
-/* Makes a temporary LodePNGColorMode that does not need cleanup (no palette) */
-LodePNGColorMode lodepng_color_mode_make(LodePNGColorType colortype, unsigned bitdepth);
-
-void lodepng_palette_clear(LodePNGColorMode* info);
-/*add 1 color to the palette*/
-unsigned lodepng_palette_add(LodePNGColorMode* info,
-                             unsigned char r, unsigned char g, unsigned char b, unsigned char a);
-
-/*get the total amount of bits per pixel, based on colortype and bitdepth in the struct*/
-unsigned lodepng_get_bpp(const LodePNGColorMode* info);
-/*get the amount of color channels used, based on colortype in the struct.
-If a palette is used, it counts as 1 channel.*/
-unsigned lodepng_get_channels(const LodePNGColorMode* info);
-/*is it a grayscale type? (only colortype 0 or 4)*/
-unsigned lodepng_is_greyscale_type(const LodePNGColorMode* info);
-/*has it got an alpha channel? (only colortype 2 or 6)*/
-unsigned lodepng_is_alpha_type(const LodePNGColorMode* info);
-/*has it got a palette? (only colortype 3)*/
-unsigned lodepng_is_palette_type(const LodePNGColorMode* info);
-/*only returns true if there is a palette and there is a value in the palette with alpha < 255.
-Loops through the palette to check this.*/
-unsigned lodepng_has_palette_alpha(const LodePNGColorMode* info);
-/*
-Check if the given color info indicates the possibility of having non-opaque pixels in the PNG image.
-Returns true if the image can have translucent or invisible pixels (it still be opaque if it doesn't use such pixels).
-Returns false if the image can only have opaque pixels.
-In detail, it returns true only if it's a color type with alpha, or has a palette with non-opaque values,
-or if "key_defined" is true.
-*/
-unsigned lodepng_can_have_alpha(const LodePNGColorMode* info);
-/*Returns the byte size of a raw image buffer with given width, height and color mode*/
-size_t lodepng_get_raw_size(unsigned w, unsigned h, const LodePNGColorMode* color);
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-/*The information of a Time chunk in PNG.*/
-typedef struct LodePNGTime {
-  unsigned year;    /*2 bytes used (0-65535)*/
-  unsigned month;   /*1-12*/
-  unsigned day;     /*1-31*/
-  unsigned hour;    /*0-23*/
-  unsigned minute;  /*0-59*/
-  unsigned second;  /*0-60 (to allow for leap seconds)*/
-} LodePNGTime;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-/*Information about the PNG image, except pixels, width and height.*/
-typedef struct LodePNGInfo {
-  /*header (IHDR), palette (PLTE) and transparency (tRNS) chunks*/
-  unsigned compression_method;/*compression method of the original file. Always 0.*/
-  unsigned filter_method;     /*filter method of the original file*/
-  unsigned interlace_method;  /*interlace method of the original file: 0=none, 1=Adam7*/
-  LodePNGColorMode color;     /*color type and bits, palette and transparency of the PNG file*/
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  /*
-  Suggested background color chunk (bKGD)
-
-  This uses the same color mode and bit depth as the PNG (except no alpha channel),
-  with values truncated to the bit depth in the unsigned integer.
-
-  For grayscale and palette PNGs, the value is stored in background_r. The values
-  in background_g and background_b are then unused. The decoder will set them
-  equal to background_r, the encoder ignores them in this case.
-
-  When decoding, you may get these in a different color mode than the one you requested
-  for the raw pixels: the colortype and bitdepth defined by info_png.color, that is the
-  ones defined in the header of the PNG image, are used.
-
-  When encoding with auto_convert, you must use the color model defined in info_png.color for
-  these values. The encoder normally ignores info_png.color when auto_convert is on, but will
-  use it to interpret these values (and convert copies of them to its chosen color model).
-
-  When encoding, avoid setting this to an expensive color, such as a non-gray value
-  when the image is gray, or the compression will be worse since it will be forced to
-  write the PNG with a more expensive color mode (when auto_convert is on).
-
-  The decoder does not use this background color to edit the color of pixels. This is a
-  completely optional metadata feature.
-  */
-  unsigned background_defined; /*is a suggested background color given?*/
-  unsigned background_r;       /*red/gray/palette component of suggested background color*/
-  unsigned background_g;       /*green component of suggested background color*/
-  unsigned background_b;       /*blue component of suggested background color*/
-
-  /*
-  Non-international text chunks (tEXt and zTXt)
-
-  The char** arrays each contain num strings. The actual messages are in
-  text_strings, while text_keys are keywords that give a short description what
-  the actual text represents, e.g. Title, Author, Description, or anything else.
-
-  All the string fields below including strings, keys, names and language tags are null terminated.
-  The PNG specification uses null characters for the keys, names and tags, and forbids null
-  characters to appear in the main text which is why we can use null termination everywhere here.
-
-  A keyword is minimum 1 character and maximum 79 characters long (plus the
-  additional null terminator). It's discouraged to use a single line length
-  longer than 79 characters for texts.
-
-  Don't allocate these text buffers yourself. Use the init/cleanup functions
-  correctly and use lodepng_add_text and lodepng_clear_text.
-
-  Standard text chunk keywords and strings are encoded using Latin-1.
-  */
-  size_t text_num; /*the amount of texts in these char** buffers (there may be more texts in itext)*/
-  char** text_keys; /*the keyword of a text chunk (e.g. "Comment")*/
-  char** text_strings; /*the actual text*/
-
-  /*
-  International text chunks (iTXt)
-  Similar to the non-international text chunks, but with additional strings
-  "langtags" and "transkeys", and the following text encodings are used:
-  keys: Latin-1, langtags: ASCII, transkeys and strings: UTF-8.
-  keys must be 1-79 characters (plus the additional null terminator), the other
-  strings are any length.
-  */
-  size_t itext_num; /*the amount of international texts in this PNG*/
-  char** itext_keys; /*the English keyword of the text chunk (e.g. "Comment")*/
-  char** itext_langtags; /*language tag for this text's language, ISO/IEC 646 string, e.g. ISO 639 language tag*/
-  char** itext_transkeys; /*keyword translated to the international language - UTF-8 string*/
-  char** itext_strings; /*the actual international text - UTF-8 string*/
-
-  /*time chunk (tIME)*/
-  unsigned time_defined; /*set to 1 to make the encoder generate a tIME chunk*/
-  LodePNGTime time;
-
-  /*phys chunk (pHYs)*/
-  unsigned phys_defined; /*if 0, there is no pHYs chunk and the values below are undefined, if 1 else there is one*/
-  unsigned phys_x; /*pixels per unit in x direction*/
-  unsigned phys_y; /*pixels per unit in y direction*/
-  unsigned phys_unit; /*may be 0 (unknown unit) or 1 (metre)*/
-
-  /*
-  Color profile related chunks: gAMA, cHRM, sRGB, iCPP, sBIT
-
-  LodePNG does not apply any color conversions on pixels in the encoder or decoder and does not interpret these color
-  profile values. It merely passes on the information. If you wish to use color profiles and convert colors, please
-  use these values with a color management library.
-
-  See the PNG, ICC and sRGB specifications for more information about the meaning of these values.
-  */
-
-  /* gAMA chunk: optional, overridden by sRGB or iCCP if those are present. */
-  unsigned gama_defined; /* Whether a gAMA chunk is present (0 = not present, 1 = present). */
-  unsigned gama_gamma;   /* Gamma exponent times 100000 */
-
-  /* cHRM chunk: optional, overridden by sRGB or iCCP if those are present. */
-  unsigned chrm_defined; /* Whether a cHRM chunk is present (0 = not present, 1 = present). */
-  unsigned chrm_white_x; /* White Point x times 100000 */
-  unsigned chrm_white_y; /* White Point y times 100000 */
-  unsigned chrm_red_x;   /* Red x times 100000 */
-  unsigned chrm_red_y;   /* Red y times 100000 */
-  unsigned chrm_green_x; /* Green x times 100000 */
-  unsigned chrm_green_y; /* Green y times 100000 */
-  unsigned chrm_blue_x;  /* Blue x times 100000 */
-  unsigned chrm_blue_y;  /* Blue y times 100000 */
-
-  /*
-  sRGB chunk: optional. May not appear at the same time as iCCP.
-  If gAMA is also present gAMA must contain value 45455.
-  If cHRM is also present cHRM must contain respectively 31270,32900,64000,33000,30000,60000,15000,6000.
-  */
-  unsigned srgb_defined; /* Whether an sRGB chunk is present (0 = not present, 1 = present). */
-  unsigned srgb_intent;  /* Rendering intent: 0=perceptual, 1=rel. colorimetric, 2=saturation, 3=abs. colorimetric */
-
-  /*
-  iCCP chunk: optional. May not appear at the same time as sRGB.
-
-  LodePNG does not parse or use the ICC profile (except its color space header field for an edge case), a
-  separate library to handle the ICC data (not included in LodePNG) format is needed to use it for color
-  management and conversions.
-
-  For encoding, if iCCP is present, gAMA and cHRM are recommended to be added as well with values that match the ICC
-  profile as closely as possible, if you wish to do this you should provide the correct values for gAMA and cHRM and
-  enable their '_defined' flags since LodePNG will not automatically compute them from the ICC profile.
-
-  For encoding, the ICC profile is required by the PNG specification to be an "RGB" profile for non-gray
-  PNG color types and a "GRAY" profile for gray PNG color types. If you disable auto_convert, you must ensure
-  the ICC profile type matches your requested color type, else the encoder gives an error. If auto_convert is
-  enabled (the default), and the ICC profile is not a good match for the pixel data, this will result in an encoder
-  error if the pixel data has non-gray pixels for a GRAY profile, or a silent less-optimal compression of the pixel
-  data if the pixels could be encoded as grayscale but the ICC profile is RGB.
-
-  To avoid this do not set an ICC profile in the image unless there is a good reason for it, and when doing so
-  make sure you compute it carefully to avoid the above problems.
-  */
-  unsigned iccp_defined;      /* Whether an iCCP chunk is present (0 = not present, 1 = present). */
-  char* iccp_name;            /* Null terminated string with profile name, 1-79 bytes */
-  /*
-  The ICC profile in iccp_profile_size bytes.
-  Don't allocate this buffer yourself. Use the init/cleanup functions
-  correctly and use lodepng_set_icc and lodepng_clear_icc.
-  */
-  unsigned char* iccp_profile;
-  unsigned iccp_profile_size; /* The size of iccp_profile in bytes */
-
-  /*
-  sBIT chunk: significant bits. Optional metadata, only set this if needed.
-
-  If defined, these values give the bit depth of the original data. Since PNG only stores 1, 2, 4, 8 or 16-bit
-  per channel data, the significant bits value can be used to indicate the original encoded data has another
-  sample depth, such as 10 or 12.
-
-  Encoders using this value, when storing the pixel data, should use the most significant bits
-  of the data to store the original bits, and use a good sample depth scaling method such as
-  "left bit replication" to fill in the least significant bits, rather than fill zeroes.
-
-  Decoders using this value, if able to work with data that's e.g. 10-bit or 12-bit, should right
-  shift the data to go back to the original bit depth, but decoders are also allowed to ignore
-  sbit and work e.g. with the 8-bit or 16-bit data from the PNG directly, since thanks
-  to the encoder contract, the values encoded in PNG are in valid range for the PNG bit depth.
-
-  For grayscale images, sbit_g and sbit_b are not used, and for images that don't use color
-  type RGBA or grayscale+alpha, sbit_a is not used (it's not used even for palette images with
-  translucent palette values, or images with color key). The values that are used must be
-  greater than zero and smaller than or equal to the PNG bit depth.
-
-  The color type from the header in the PNG image defines these used and unused fields: if
-  decoding with a color mode conversion, such as always decoding to RGBA, this metadata still
-  only uses the color type of the original PNG, and may e.g. lack the alpha channel info
-  if the PNG was RGB. When encoding with auto_convert (as well as without), also always the
-  color model defined in info_png.color determines this.
-
-  NOTE: enabling sbit can hurt compression, because the encoder can then not always use
-  auto_convert to choose a more optimal color mode for the data, because the PNG format has
-  strict requirements for the allowed sbit values in combination with color modes.
-  For example, setting these fields to 10-bit will force the encoder to keep using a 16-bit per channel
-  color mode, even if the pixel data would in fact fit in a more efficient 8-bit mode.
-  */
-  unsigned sbit_defined; /*is significant bits given? if not, the values below are unused*/
-  unsigned sbit_r;       /*red or gray component of significant bits*/
-  unsigned sbit_g;       /*green component of significant bits*/
-  unsigned sbit_b;       /*blue component of significant bits*/
-  unsigned sbit_a;       /*alpha component of significant bits*/
-
-  /* End of color profile related chunks */
-
-
-  /*
-  unknown chunks: chunks not known by LodePNG, passed on byte for byte.
-
-  There are 3 buffers, one for each position in the PNG where unknown chunks can appear.
-  Each buffer contains all unknown chunks for that position consecutively.
-  The 3 positions are:
-  0: between IHDR and PLTE, 1: between PLTE and IDAT, 2: between IDAT and IEND.
-
-  For encoding, do not store critical chunks or known chunks that are enabled with a "_defined" flag
-  above in here, since the encoder will blindly follow this and could then encode an invalid PNG file
-  (such as one with two IHDR chunks or the disallowed combination of sRGB with iCCP). But do use
-  this if you wish to store an ancillary chunk that is not supported by LodePNG (such as sPLT or hIST),
-  or any non-standard PNG chunk.
-
-  Do not allocate or traverse this data yourself. Use the chunk traversing functions declared
-  later, such as lodepng_chunk_next and lodepng_chunk_append, to read/write this struct.
-  */
-  unsigned char* unknown_chunks_data[3];
-  size_t unknown_chunks_size[3]; /*size in bytes of the unknown chunks, given for protection*/
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-} LodePNGInfo;
-
-/*init, cleanup and copy functions to use with this struct*/
-void lodepng_info_init(LodePNGInfo* info);
-void lodepng_info_cleanup(LodePNGInfo* info);
-/*return value is error code (0 means no error)*/
-unsigned lodepng_info_copy(LodePNGInfo* dest, const LodePNGInfo* source);
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-unsigned lodepng_add_text(LodePNGInfo* info, const char* key, const char* str); /*push back both texts at once*/
-void lodepng_clear_text(LodePNGInfo* info); /*use this to clear the texts again after you filled them in*/
-
-unsigned lodepng_add_itext(LodePNGInfo* info, const char* key, const char* langtag,
-                           const char* transkey, const char* str); /*push back the 4 texts of 1 chunk at once*/
-void lodepng_clear_itext(LodePNGInfo* info); /*use this to clear the itexts again after you filled them in*/
-
-/*replaces if exists*/
-unsigned lodepng_set_icc(LodePNGInfo* info, const char* name, const unsigned char* profile, unsigned profile_size);
-void lodepng_clear_icc(LodePNGInfo* info); /*use this to clear the texts again after you filled them in*/
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-
-/*
-Converts raw buffer from one color type to another color type, based on
-LodePNGColorMode structs to describe the input and output color type.
-See the reference manual at the end of this header file to see which color conversions are supported.
-return value = LodePNG error code (0 if all went ok, an error if the conversion isn't supported)
-The out buffer must have size (w * h * bpp + 7) / 8, where bpp is the bits per pixel
-of the output color type (lodepng_get_bpp).
-For < 8 bpp images, there should not be padding bits at the end of scanlines.
-For 16-bit per channel colors, uses big endian format like PNG does.
-Return value is LodePNG error code
-*/
-unsigned lodepng_convert(unsigned char* out, const unsigned char* in,
-                         const LodePNGColorMode* mode_out, const LodePNGColorMode* mode_in,
-                         unsigned w, unsigned h);
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*
-Settings for the decoder. This contains settings for the PNG and the Zlib
-decoder, but not the Info settings from the Info structs.
-*/
-typedef struct LodePNGDecoderSettings {
-  LodePNGDecompressSettings zlibsettings; /*in here is the setting to ignore Adler32 checksums*/
-
-  /* Check LodePNGDecompressSettings for more ignorable errors such as ignore_adler32 */
-  unsigned ignore_crc; /*ignore CRC checksums*/
-  unsigned ignore_critical; /*ignore unknown critical chunks*/
-  unsigned ignore_end; /*ignore issues at end of file if possible (missing IEND chunk, too large chunk, ...)*/
-  /* TODO: make a system involving warnings with levels and a strict mode instead. Other potentially recoverable
-     errors: srgb rendering intent value, size of content of ancillary chunks, more than 79 characters for some
-     strings, placement/combination rules for ancillary chunks, crc of unknown chunks, allowed characters
-     in string keys, etc... */
-
-  unsigned color_convert; /*whether to convert the PNG to the color type you want. Default: yes*/
-
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  unsigned read_text_chunks; /*if false but remember_unknown_chunks is true, they're stored in the unknown chunks*/
-
-  /*store all bytes from unknown chunks in the LodePNGInfo (off by default, useful for a png editor)*/
-  unsigned remember_unknown_chunks;
-
-  /* maximum size for decompressed text chunks. If a text chunk's text is larger than this, an error is returned,
-  unless reading text chunks is disabled or this limit is set higher or disabled. Set to 0 to allow any size.
-  By default it is a value that prevents unreasonably large strings from hogging memory. */
-  size_t max_text_size;
-
-  /* maximum size for compressed ICC chunks. If the ICC profile is larger than this, an error will be returned. Set to
-  0 to allow any size. By default this is a value that prevents ICC profiles that would be much larger than any
-  legitimate profile could be to hog memory. */
-  size_t max_icc_size;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-} LodePNGDecoderSettings;
-
-void lodepng_decoder_settings_init(LodePNGDecoderSettings* settings);
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*automatically use color type with less bits per pixel if losslessly possible. Default: AUTO*/
-typedef enum LodePNGFilterStrategy {
-  /*every filter at zero*/
-  LFS_ZERO = 0,
-  /*every filter at 1, 2, 3 or 4 (paeth), unlike LFS_ZERO not a good choice, but for testing*/
-  LFS_ONE = 1,
-  LFS_TWO = 2,
-  LFS_THREE = 3,
-  LFS_FOUR = 4,
-  /*Use filter that gives minimum sum, as described in the official PNG filter heuristic.*/
-  LFS_MINSUM,
-  /*Use the filter type that gives smallest Shannon entropy for this scanline. Depending
-  on the image, this is better or worse than minsum.*/
-  LFS_ENTROPY,
-  /*
-  Brute-force-search PNG filters by compressing each filter for each scanline.
-  Experimental, very slow, and only rarely gives better compression than MINSUM.
-  */
-  LFS_BRUTE_FORCE,
-  /*use predefined_filters buffer: you specify the filter type for each scanline*/
-  LFS_PREDEFINED
-} LodePNGFilterStrategy;
-
-/*Gives characteristics about the integer RGBA colors of the image (count, alpha channel usage, bit depth, ...),
-which helps decide which color model to use for encoding.
-Used internally by default if "auto_convert" is enabled. Public because it's useful for custom algorithms.*/
-typedef struct LodePNGColorStats {
-  unsigned colored; /*not grayscale*/
-  unsigned key; /*image is not opaque and color key is possible instead of full alpha*/
-  unsigned short key_r; /*key values, always as 16-bit, in 8-bit case the byte is duplicated, e.g. 65535 means 255*/
-  unsigned short key_g;
-  unsigned short key_b;
-  unsigned alpha; /*image is not opaque and alpha channel or alpha palette required*/
-  unsigned numcolors; /*amount of colors, up to 257. Not valid if bits == 16 or allow_palette is disabled.*/
-  unsigned char palette[1024]; /*Remembers up to the first 256 RGBA colors, in no particular order, only valid when numcolors is valid*/
-  unsigned bits; /*bits per channel (not for palette). 1,2 or 4 for grayscale only. 16 if 16-bit per channel required.*/
-  size_t numpixels;
-
-  /*user settings for computing/using the stats*/
-  unsigned allow_palette; /*default 1. if 0, disallow choosing palette colortype in auto_choose_color, and don't count numcolors*/
-  unsigned allow_greyscale; /*default 1. if 0, choose RGB or RGBA even if the image only has gray colors*/
-} LodePNGColorStats;
-
-void lodepng_color_stats_init(LodePNGColorStats* stats);
-
-/*Get a LodePNGColorStats of the image. The stats must already have been inited.
-Returns error code (e.g. alloc fail) or 0 if ok.*/
-unsigned lodepng_compute_color_stats(LodePNGColorStats* stats,
-                                     const unsigned char* image, unsigned w, unsigned h,
-                                     const LodePNGColorMode* mode_in);
-
-/*Settings for the encoder.*/
-typedef struct LodePNGEncoderSettings {
-  LodePNGCompressSettings zlibsettings; /*settings for the zlib encoder, such as window size, ...*/
-
-  unsigned auto_convert; /*automatically choose output PNG color type. Default: true*/
-
-  /*If true, follows the official PNG heuristic: if the PNG uses a palette or lower than
-  8 bit depth, set all filters to zero. Otherwise use the filter_strategy. Note that to
-  completely follow the official PNG heuristic, filter_palette_zero must be true and
-  filter_strategy must be LFS_MINSUM*/
-  unsigned filter_palette_zero;
-  /*Which filter strategy to use when not using zeroes due to filter_palette_zero.
-  Set filter_palette_zero to 0 to ensure always using your chosen strategy. Default: LFS_MINSUM*/
-  LodePNGFilterStrategy filter_strategy;
-  /*used if filter_strategy is LFS_PREDEFINED. In that case, this must point to a buffer with
-  the same length as the amount of scanlines in the image, and each value must <= 5. You
-  have to cleanup this buffer, LodePNG will never free it. Don't forget that filter_palette_zero
-  must be set to 0 to ensure this is also used on palette or low bitdepth images.*/
-  const unsigned char* predefined_filters;
-
-  /*force creating a PLTE chunk if colortype is 2 or 6 (= a suggested palette).
-  If colortype is 3, PLTE is always created. If color type is explicitely set
-  to a grayscale type (1 or 4), this is not done and is ignored. If enabling this,
-  a palette must be present in the info_png.
-  NOTE: enabling this may worsen compression if auto_convert is used to choose
-  optimal color mode, because it cannot use grayscale color modes in this case*/
-  unsigned force_palette;
-#ifdef LODEPNG_COMPILE_ANCILLARY_CHUNKS
-  /*add LodePNG identifier and version as a text chunk, for debugging*/
-  unsigned add_id;
-  /*encode text chunks as zTXt chunks instead of tEXt chunks, and use compression in iTXt chunks*/
-  unsigned text_compression;
-#endif /*LODEPNG_COMPILE_ANCILLARY_CHUNKS*/
-} LodePNGEncoderSettings;
-
-void lodepng_encoder_settings_init(LodePNGEncoderSettings* settings);
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-
-#if defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER)
-/*The settings, state and information for extended encoding and decoding.*/
-typedef struct LodePNGState {
-#ifdef LODEPNG_COMPILE_DECODER
-  LodePNGDecoderSettings decoder; /*the decoding settings*/
-#endif /*LODEPNG_COMPILE_DECODER*/
-#ifdef LODEPNG_COMPILE_ENCODER
-  LodePNGEncoderSettings encoder; /*the encoding settings*/
-#endif /*LODEPNG_COMPILE_ENCODER*/
-  LodePNGColorMode info_raw; /*specifies the format in which you would like to get the raw pixel buffer*/
-  LodePNGInfo info_png; /*info of the PNG image obtained after decoding*/
-  unsigned error;
-} LodePNGState;
-
-/*init, cleanup and copy functions to use with this struct*/
-void lodepng_state_init(LodePNGState* state);
-void lodepng_state_cleanup(LodePNGState* state);
-void lodepng_state_copy(LodePNGState* dest, const LodePNGState* source);
-#endif /* defined(LODEPNG_COMPILE_DECODER) || defined(LODEPNG_COMPILE_ENCODER) */
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*
-Same as lodepng_decode_memory, but uses a LodePNGState to allow custom settings and
-getting much more information about the PNG image and color mode.
-*/
-unsigned lodepng_decode(unsigned char** out, unsigned* w, unsigned* h,
-                        LodePNGState* state,
-                        const unsigned char* in, size_t insize);
-
-/*
-Read the PNG header, but not the actual data. This returns only the information
-that is in the IHDR chunk of the PNG, such as width, height and color type. The
-information is placed in the info_png field of the LodePNGState.
-*/
-unsigned lodepng_inspect(unsigned* w, unsigned* h,
-                         LodePNGState* state,
-                         const unsigned char* in, size_t insize);
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-/*
-Reads one metadata chunk (other than IHDR, which is handled by lodepng_inspect)
-of the PNG file and outputs what it read in the state. Returns error code on failure.
-Use lodepng_inspect first with a new state, then e.g. lodepng_chunk_find_const
-to find the desired chunk type, and if non null use lodepng_inspect_chunk (with
-chunk_pointer - start_of_file as pos).
-Supports most metadata chunks from the PNG standard (gAMA, bKGD, tEXt, ...).
-Ignores unsupported, unknown, non-metadata or IHDR chunks (without error).
-Requirements: &in[pos] must point to start of a chunk, must use regular
-lodepng_inspect first since format of most other chunks depends on IHDR, and if
-there is a PLTE chunk, that one must be inspected before tRNS or bKGD.
-*/
-unsigned lodepng_inspect_chunk(LodePNGState* state, size_t pos,
-                               const unsigned char* in, size_t insize);
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*This function allocates the out buffer with standard malloc and stores the size in *outsize.*/
-unsigned lodepng_encode(unsigned char** out, size_t* outsize,
-                        const unsigned char* image, unsigned w, unsigned h,
-                        LodePNGState* state);
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-/*
-The lodepng_chunk functions are normally not needed, except to traverse the
-unknown chunks stored in the LodePNGInfo struct, or add new ones to it.
-It also allows traversing the chunks of an encoded PNG file yourself.
-
-The chunk pointer always points to the beginning of the chunk itself, that is
-the first byte of the 4 length bytes.
-
-In the PNG file format, chunks have the following format:
--4 bytes length: length of the data of the chunk in bytes (chunk itself is 12 bytes longer)
--4 bytes chunk type (ASCII a-z,A-Z only, see below)
--length bytes of data (may be 0 bytes if length was 0)
--4 bytes of CRC, computed on chunk name + data
-
-The first chunk starts at the 8th byte of the PNG file, the entire rest of the file
-exists out of concatenated chunks with the above format.
-
-PNG standard chunk ASCII naming conventions:
--First byte: uppercase = critical, lowercase = ancillary
--Second byte: uppercase = public, lowercase = private
--Third byte: must be uppercase
--Fourth byte: uppercase = unsafe to copy, lowercase = safe to copy
-*/
-
-/*
-Gets the length of the data of the chunk. Total chunk length has 12 bytes more.
-There must be at least 4 bytes to read from. If the result value is too large,
-it may be corrupt data.
-*/
-unsigned lodepng_chunk_length(const unsigned char* chunk);
-
-/*puts the 4-byte type in null terminated string*/
-void lodepng_chunk_type(char type[5], const unsigned char* chunk);
-
-/*check if the type is the given type*/
-unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type);
-
-/*0: it's one of the critical chunk types, 1: it's an ancillary chunk (see PNG standard)*/
-unsigned char lodepng_chunk_ancillary(const unsigned char* chunk);
-
-/*0: public, 1: private (see PNG standard)*/
-unsigned char lodepng_chunk_private(const unsigned char* chunk);
-
-/*0: the chunk is unsafe to copy, 1: the chunk is safe to copy (see PNG standard)*/
-unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk);
-
-/*get pointer to the data of the chunk, where the input points to the header of the chunk*/
-unsigned char* lodepng_chunk_data(unsigned char* chunk);
-const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk);
-
-/*returns 0 if the crc is correct, 1 if it's incorrect (0 for OK as usual!)*/
-unsigned lodepng_chunk_check_crc(const unsigned char* chunk);
-
-/*generates the correct CRC from the data and puts it in the last 4 bytes of the chunk*/
-void lodepng_chunk_generate_crc(unsigned char* chunk);
-
-/*
-Iterate to next chunks, allows iterating through all chunks of the PNG file.
-Input must be at the beginning of a chunk (result of a previous lodepng_chunk_next call,
-or the 8th byte of a PNG file which always has the first chunk), or alternatively may
-point to the first byte of the PNG file (which is not a chunk but the magic header, the
-function will then skip over it and return the first real chunk).
-Will output pointer to the start of the next chunk, or at or beyond end of the file if there
-is no more chunk after this or possibly if the chunk is corrupt.
-Start this process at the 8th byte of the PNG file.
-In a non-corrupt PNG file, the last chunk should have name "IEND".
-*/
-unsigned char* lodepng_chunk_next(unsigned char* chunk, unsigned char* end);
-const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk, const unsigned char* end);
-
-/*Finds the first chunk with the given type in the range [chunk, end), or returns NULL if not found.*/
-unsigned char* lodepng_chunk_find(unsigned char* chunk, unsigned char* end, const char type[5]);
-const unsigned char* lodepng_chunk_find_const(const unsigned char* chunk, const unsigned char* end, const char type[5]);
-
-/*
-Appends chunk to the data in out. The given chunk should already have its chunk header.
-The out variable and outsize are updated to reflect the new reallocated buffer.
-Returns error code (0 if it went ok)
-*/
-unsigned lodepng_chunk_append(unsigned char** out, size_t* outsize, const unsigned char* chunk);
-
-/*
-Appends new chunk to out. The chunk to append is given by giving its length, type
-and data separately. The type is a 4-letter string.
-The out variable and outsize are updated to reflect the new reallocated buffer.
-Returne error code (0 if it went ok)
-*/
-unsigned lodepng_chunk_create(unsigned char** out, size_t* outsize, unsigned length,
-                              const char* type, const unsigned char* data);
-
-
-/*Calculate CRC32 of buffer*/
-unsigned lodepng_crc32(const unsigned char* buf, size_t len);
-#endif /*LODEPNG_COMPILE_PNG*/
-
-
-#ifdef LODEPNG_COMPILE_ZLIB
-/*
-This zlib part can be used independently to zlib compress and decompress a
-buffer. It cannot be used to create gzip files however, and it only supports the
-part of zlib that is required for PNG, it does not support dictionaries.
-*/
-
-#ifdef LODEPNG_COMPILE_DECODER
-/*Inflate a buffer. Inflate is the decompression step of deflate. Out buffer must be freed after use.*/
-unsigned lodepng_inflate(unsigned char** out, size_t* outsize,
-                         const unsigned char* in, size_t insize,
-                         const LodePNGDecompressSettings* settings);
-
-/*
-Decompresses Zlib data. Reallocates the out buffer and appends the data. The
-data must be according to the zlib specification.
-Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
-buffer and *outsize its size in bytes. out must be freed by user after usage.
-*/
-unsigned lodepng_zlib_decompress(unsigned char** out, size_t* outsize,
-                                 const unsigned char* in, size_t insize,
-                                 const LodePNGDecompressSettings* settings);
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/*
-Compresses data with Zlib. Reallocates the out buffer and appends the data.
-Zlib adds a small header and trailer around the deflate data.
-The data is output in the format of the zlib specification.
-Either, *out must be NULL and *outsize must be 0, or, *out must be a valid
-buffer and *outsize its size in bytes. out must be freed by user after usage.
-*/
-unsigned lodepng_zlib_compress(unsigned char** out, size_t* outsize,
-                               const unsigned char* in, size_t insize,
-                               const LodePNGCompressSettings* settings);
-
-/*
-Find length-limited Huffman code for given frequencies. This function is in the
-public interface only for tests, it's used internally by lodepng_deflate.
-*/
-unsigned lodepng_huffman_code_lengths(unsigned* lengths, const unsigned* frequencies,
-                                      size_t numcodes, unsigned maxbitlen);
-
-/*Compress a buffer with deflate. See RFC 1951. Out buffer must be freed after use.*/
-unsigned lodepng_deflate(unsigned char** out, size_t* outsize,
-                         const unsigned char* in, size_t insize,
-                         const LodePNGCompressSettings* settings);
-
-#endif /*LODEPNG_COMPILE_ENCODER*/
-#endif /*LODEPNG_COMPILE_ZLIB*/
-
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Load a file from disk into buffer. The function allocates the out buffer, and
-after usage you should free it.
-out: output parameter, contains pointer to loaded buffer.
-outsize: output parameter, size of the allocated out buffer
-filename: the path to the file to load
-return value: error code (0 means ok)
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory.
-*/
-unsigned lodepng_load_file(unsigned char** out, size_t* outsize, const char* filename);
-
-/*
-Save a file from buffer to disk. Warning, if it exists, this function overwrites
-the file without warning!
-buffer: the buffer to write
-buffersize: size of the buffer to write
-filename: the path to the file to save to
-return value: error code (0 means ok)
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and encode in-memory
-*/
-unsigned lodepng_save_file(const unsigned char* buffer, size_t buffersize, const char* filename);
-#endif /*LODEPNG_COMPILE_DISK*/
-
-#ifdef LODEPNG_COMPILE_CPP
-/* The LodePNG C++ wrapper uses std::vectors instead of manually allocated memory buffers. */
-namespace lodepng {
-#ifdef LODEPNG_COMPILE_PNG
-class State : public LodePNGState {
-  public:
-    State();
-    State(const State& other);
-    ~State();
-    State& operator=(const State& other);
-};
-
-#ifdef LODEPNG_COMPILE_DECODER
-/* Same as other lodepng::decode, but using a State for more settings and information. */
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                State& state,
-                const unsigned char* in, size_t insize);
-unsigned decode(std::vector<unsigned char>& out, unsigned& w, unsigned& h,
-                State& state,
-                const std::vector<unsigned char>& in);
-#endif /*LODEPNG_COMPILE_DECODER*/
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/* Same as other lodepng::encode, but using a State for more settings and information. */
-unsigned encode(std::vector<unsigned char>& out,
-                const unsigned char* in, unsigned w, unsigned h,
-                State& state);
-unsigned encode(std::vector<unsigned char>& out,
-                const std::vector<unsigned char>& in, unsigned w, unsigned h,
-                State& state);
-#endif /*LODEPNG_COMPILE_ENCODER*/
-
-#ifdef LODEPNG_COMPILE_DISK
-/*
-Load a file from disk into an std::vector.
-return value: error code (0 means ok)
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and decode in-memory
-*/
-unsigned load_file(std::vector<unsigned char>& buffer, const std::string& filename);
-
-/*
-Save the binary data in an std::vector to a file on disk. The file is overwritten
-without warning.
-
-NOTE: Wide-character filenames are not supported, you can use an external method
-to handle such files and encode in-memory
-*/
-unsigned save_file(const std::vector<unsigned char>& buffer, const std::string& filename);
-#endif /* LODEPNG_COMPILE_DISK */
-#endif /* LODEPNG_COMPILE_PNG */
-
-#ifdef LODEPNG_COMPILE_ZLIB
-#ifdef LODEPNG_COMPILE_DECODER
-/* Zlib-decompress an unsigned char buffer */
-unsigned decompress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
-                    const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings);
-
-/* Zlib-decompress an std::vector */
-unsigned decompress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
-                    const LodePNGDecompressSettings& settings = lodepng_default_decompress_settings);
-#endif /* LODEPNG_COMPILE_DECODER */
-
-#ifdef LODEPNG_COMPILE_ENCODER
-/* Zlib-compress an unsigned char buffer */
-unsigned compress(std::vector<unsigned char>& out, const unsigned char* in, size_t insize,
-                  const LodePNGCompressSettings& settings = lodepng_default_compress_settings);
-
-/* Zlib-compress an std::vector */
-unsigned compress(std::vector<unsigned char>& out, const std::vector<unsigned char>& in,
-                  const LodePNGCompressSettings& settings = lodepng_default_compress_settings);
-#endif /* LODEPNG_COMPILE_ENCODER */
-#endif /* LODEPNG_COMPILE_ZLIB */
-} /* namespace lodepng */
-#endif /*LODEPNG_COMPILE_CPP*/
-
-/*
-TODO:
-[.] test if there are no memory leaks or security exploits - done a lot but needs to be checked often
-[.] check compatibility with various compilers  - done but needs to be redone for every newer version
-[X] converting color to 16-bit per channel types
-[X] support color profile chunk types (but never let them touch RGB values by default)
-[ ] support all public PNG chunk types (almost done except sPLT and hIST)
-[ ] make sure encoder generates no chunks with size > (2^31)-1
-[ ] partial decoding (stream processing)
-[X] let the "isFullyOpaque" function check color keys and transparent palettes too
-[X] better name for the variables "codes", "codesD", "codelengthcodes", "clcl" and "lldl"
-[ ] allow treating some errors like warnings, when image is recoverable (e.g. 69, 57, 58)
-[ ] make warnings like: oob palette, checksum fail, data after iend, wrong/unknown crit chunk, no null terminator in text, ...
-[ ] error messages with line numbers (and version)
-[ ] errors in state instead of as return code?
-[ ] new errors/warnings like suspiciously big decompressed ztxt or iccp chunk
-[ ] let the C++ wrapper catch exceptions coming from the standard library and return LodePNG error codes
-[ ] allow user to provide custom color conversion functions, e.g. for premultiplied alpha, padding bits or not, ...
-[ ] allow user to give data (void*) to custom allocator
-[X] provide alternatives for C library functions not present on some platforms (memcpy, ...)
-*/
-
-#endif /*LODEPNG_H inclusion guard*/
-
-/*
-LodePNG Documentation
----------------------
-
-0. table of contents
---------------------
-
-  1. about
-   1.1. supported features
-   1.2. features not supported
-  2. C and C++ version
-  3. security
-  4. decoding
-  5. encoding
-  6. color conversions
-    6.1. PNG color types
-    6.2. color conversions
-    6.3. padding bits
-    6.4. A note about 16-bits per channel and endianness
-  7. error values
-  8. chunks and PNG editing
-  9. compiler support
-  10. examples
-   10.1. decoder C++ example
-   10.2. decoder C example
-  11. state settings reference
-  12. changes
-  13. contact information
-
-
-1. about
---------
-
-PNG is a file format to store raster images losslessly with good compression,
-supporting different color types and alpha channel.
-
-LodePNG is a PNG codec according to the Portable Network Graphics (PNG)
-Specification (Second Edition) - W3C Recommendation 10 November 2003.
-
-The specifications used are:
-
-*) Portable Network Graphics (PNG) Specification (Second Edition):
-     http://www.w3.org/TR/2003/REC-PNG-20031110
-*) RFC 1950 ZLIB Compressed Data Format version 3.3:
-     http://www.gzip.org/zlib/rfc-zlib.html
-*) RFC 1951 DEFLATE Compressed Data Format Specification ver 1.3:
-     http://www.gzip.org/zlib/rfc-deflate.html
-
-The most recent version of LodePNG can currently be found at
-http://lodev.org/lodepng/
-
-LodePNG works both in C (ISO C90) and C++, with a C++ wrapper that adds
-extra functionality.
-
-LodePNG exists out of two files:
--lodepng.h: the header file for both C and C++
--lodepng.c(pp): give it the name lodepng.c or lodepng.cpp (or .cc) depending on your usage
-
-If you want to start using LodePNG right away without reading this doc, get the
-examples from the LodePNG website to see how to use it in code, or check the
-smaller examples in chapter 13 here.
-
-LodePNG is simple but only supports the basic requirements. To achieve
-simplicity, the following design choices were made: There are no dependencies
-on any external library. There are functions to decode and encode a PNG with
-a single function call, and extended versions of these functions taking a
-LodePNGState struct allowing to specify or get more information. By default
-the colors of the raw image are always RGB or RGBA, no matter what color type
-the PNG file uses. To read and write files, there are simple functions to
-convert the files to/from buffers in memory.
-
-This all makes LodePNG suitable for loading textures in games, demos and small
-programs, ... It's less suitable for full fledged image editors, loading PNGs
-over network (it requires all the image data to be available before decoding can
-begin), life-critical systems, ...
-
-1.1. supported features
------------------------
-
-The following features are supported by the decoder:
-
-*) decoding of PNGs with any color type, bit depth and interlace mode, to a 24- or 32-bit color raw image,
-   or the same color type as the PNG
-*) encoding of PNGs, from any raw image to 24- or 32-bit color, or the same color type as the raw image
-*) Adam7 interlace and deinterlace for any color type
-*) loading the image from harddisk or decoding it from a buffer from other sources than harddisk
-*) support for alpha channels, including RGBA color model, translucent palettes and color keying
-*) zlib decompression (inflate)
-*) zlib compression (deflate)
-*) CRC32 and ADLER32 checksums
-*) colorimetric color profile conversions: currently experimentally available in lodepng_util.cpp only,
-   plus alternatively ability to pass on chroma/gamma/ICC profile information to other color management system.
-*) handling of unknown chunks, allowing making a PNG editor that stores custom and unknown chunks.
-*) the following chunks are supported by both encoder and decoder:
-    IHDR: header information
-    PLTE: color palette
-    IDAT: pixel data
-    IEND: the final chunk
-    tRNS: transparency for palettized images
-    tEXt: textual information
-    zTXt: compressed textual information
-    iTXt: international textual information
-    bKGD: suggested background color
-    pHYs: physical dimensions
-    tIME: modification time
-    cHRM: RGB chromaticities
-    gAMA: RGB gamma correction
-    iCCP: ICC color profile
-    sRGB: rendering intent
-    sBIT: significant bits
-
-1.2. features not supported
----------------------------
-
-The following features are not (yet) supported:
-
-*) some features needed to make a conformant PNG-Editor might be still missing.
-*) partial loading/stream processing. All data must be available and is processed in one call.
-*) The hIST and sPLT public chunks are not (yet) supported but treated as unknown chunks
-
-
-2. C and C++ version
---------------------
-
-The C version uses buffers allocated with alloc that you need to free()
-yourself. You need to use init and cleanup functions for each struct whenever
-using a struct from the C version to avoid exploits and memory leaks.
-
-The C++ version has extra functions with std::vectors in the interface and the
-lodepng::State class which is a LodePNGState with constructor and destructor.
-
-These files work without modification for both C and C++ compilers because all
-the additional C++ code is in "#ifdef __cplusplus" blocks that make C-compilers
-ignore it, and the C code is made to compile both with strict ISO C90 and C++.
-
-To use the C++ version, you need to rename the source file to lodepng.cpp
-(instead of lodepng.c), and compile it with a C++ compiler.
-
-To use the C version, you need to rename the source file to lodepng.c (instead
-of lodepng.cpp), and compile it with a C compiler.
-
-
-3. Security
------------
-
-Even if carefully designed, it's always possible that LodePNG contains possible
-exploits. If you discover one, please let me know, and it will be fixed.
-
-When using LodePNG, care has to be taken with the C version of LodePNG, as well
-as the C-style structs when working with C++. The following conventions are used
-for all C-style structs:
-
--if a struct has a corresponding init function, always call the init function when making a new one
--if a struct has a corresponding cleanup function, call it before the struct disappears to avoid memory leaks
--if a struct has a corresponding copy function, use the copy function instead of "=".
- The destination must also be inited already.
-
-
-4. Decoding
------------
-
-Decoding converts a PNG compressed image to a raw pixel buffer.
-
-Most documentation on using the decoder is at its declarations in the header
-above. For C, simple decoding can be done with functions such as
-lodepng_decode32, and more advanced decoding can be done with the struct
-LodePNGState and lodepng_decode. For C++, all decoding can be done with the
-various lodepng::decode functions, and lodepng::State can be used for advanced
-features.
-
-When using the LodePNGState, it uses the following fields for decoding:
-*) LodePNGInfo info_png: it stores extra information about the PNG (the input) in here
-*) LodePNGColorMode info_raw: here you can say what color mode of the raw image (the output) you want to get
-*) LodePNGDecoderSettings decoder: you can specify a few extra settings for the decoder to use
-
-LodePNGInfo info_png
---------------------
-
-After decoding, this contains extra information of the PNG image, except the actual
-pixels, width and height because these are already gotten directly from the decoder
-functions.
-
-It contains for example the original color type of the PNG image, text comments,
-suggested background color, etc... More details about the LodePNGInfo struct are
-at its declaration documentation.
-
-LodePNGColorMode info_raw
--------------------------
-
-When decoding, here you can specify which color type you want
-the resulting raw image to be. If this is different from the colortype of the
-PNG, then the decoder will automatically convert the result. This conversion
-always works, except if you want it to convert a color PNG to grayscale or to
-a palette with missing colors.
-
-By default, 32-bit color is used for the result.
-
-LodePNGDecoderSettings decoder
-------------------------------
-
-The settings can be used to ignore the errors created by invalid CRC and Adler32
-chunks, and to disable the decoding of tEXt chunks.
-
-There's also a setting color_convert, true by default. If false, no conversion
-is done, the resulting data will be as it was in the PNG (after decompression)
-and you'll have to puzzle the colors of the pixels together yourself using the
-color type information in the LodePNGInfo.
-
-
-5. Encoding
------------
-
-Encoding converts a raw pixel buffer to a PNG compressed image.
-
-Most documentation on using the encoder is at its declarations in the header
-above. For C, simple encoding can be done with functions such as
-lodepng_encode32, and more advanced decoding can be done with the struct
-LodePNGState and lodepng_encode. For C++, all encoding can be done with the
-various lodepng::encode functions, and lodepng::State can be used for advanced
-features.
-
-Like the decoder, the encoder can also give errors. However it gives less errors
-since the encoder input is trusted, the decoder input (a PNG image that could
-be forged by anyone) is not trusted.
-
-When using the LodePNGState, it uses the following fields for encoding:
-*) LodePNGInfo info_png: here you specify how you want the PNG (the output) to be.
-*) LodePNGColorMode info_raw: here you say what color type of the raw image (the input) has
-*) LodePNGEncoderSettings encoder: you can specify a few settings for the encoder to use
-
-LodePNGInfo info_png
---------------------
-
-When encoding, you use this the opposite way as when decoding: for encoding,
-you fill in the values you want the PNG to have before encoding. By default it's
-not needed to specify a color type for the PNG since it's automatically chosen,
-but it's possible to choose it yourself given the right settings.
-
-The encoder will not always exactly match the LodePNGInfo struct you give,
-it tries as close as possible. Some things are ignored by the encoder. The
-encoder uses, for example, the following settings from it when applicable:
-colortype and bitdepth, text chunks, time chunk, the color key, the palette, the
-background color, the interlace method, unknown chunks, ...
-
-When encoding to a PNG with colortype 3, the encoder will generate a PLTE chunk.
-If the palette contains any colors for which the alpha channel is not 255 (so
-there are translucent colors in the palette), it'll add a tRNS chunk.
-
-LodePNGColorMode info_raw
--------------------------
-
-You specify the color type of the raw image that you give to the input here,
-including a possible transparent color key and palette you happen to be using in
-your raw image data.
-
-By default, 32-bit color is assumed, meaning your input has to be in RGBA
-format with 4 bytes (unsigned chars) per pixel.
-
-LodePNGEncoderSettings encoder
-------------------------------
-
-The following settings are supported (some are in sub-structs):
-*) auto_convert: when this option is enabled, the encoder will
-automatically choose the smallest possible color mode (including color key) that
-can encode the colors of all pixels without information loss.
-*) btype: the block type for LZ77. 0 = uncompressed, 1 = fixed huffman tree,
-   2 = dynamic huffman tree (best compression). Should be 2 for proper
-   compression.
-*) use_lz77: whether or not to use LZ77 for compressed block types. Should be
-   true for proper compression.
-*) windowsize: the window size used by the LZ77 encoder (1 - 32768). Has value
-   2048 by default, but can be set to 32768 for better, but slow, compression.
-*) force_palette: if colortype is 2 or 6, you can make the encoder write a PLTE
-   chunk if force_palette is true. This can used as suggested palette to convert
-   to by viewers that don't support more than 256 colors (if those still exist)
-*) add_id: add text chunk "Encoder: LodePNG <version>" to the image.
-*) text_compression: default 1. If 1, it'll store texts as zTXt instead of tEXt chunks.
-  zTXt chunks use zlib compression on the text. This gives a smaller result on
-  large texts but a larger result on small texts (such as a single program name).
-  It's all tEXt or all zTXt though, there's no separate setting per text yet.
-
-
-6. color conversions
---------------------
-
-An important thing to note about LodePNG, is that the color type of the PNG, and
-the color type of the raw image, are completely independent. By default, when
-you decode a PNG, you get the result as a raw image in the color type you want,
-no matter whether the PNG was encoded with a palette, grayscale or RGBA color.
-And if you encode an image, by default LodePNG will automatically choose the PNG
-color type that gives good compression based on the values of colors and amount
-of colors in the image. It can be configured to let you control it instead as
-well, though.
-
-To be able to do this, LodePNG does conversions from one color mode to another.
-It can convert from almost any color type to any other color type, except the
-following conversions: RGB to grayscale is not supported, and converting to a
-palette when the palette doesn't have a required color is not supported. This is
-not supported on purpose: this is information loss which requires a color
-reduction algorithm that is beyond the scope of a PNG encoder (yes, RGB to gray
-is easy, but there are multiple ways if you want to give some channels more
-weight).
-
-By default, when decoding, you get the raw image in 32-bit RGBA or 24-bit RGB
-color, no matter what color type the PNG has. And by default when encoding,
-LodePNG automatically picks the best color model for the output PNG, and expects
-the input image to be 32-bit RGBA or 24-bit RGB. So, unless you want to control
-the color format of the images yourself, you can skip this chapter.
-
-6.1. PNG color types
---------------------
-
-A PNG image can have many color types, ranging from 1-bit color to 64-bit color,
-as well as palettized color modes. After the zlib decompression and unfiltering
-in the PNG image is done, the raw pixel data will have that color type and thus
-a certain amount of bits per pixel. If you want the output raw image after
-decoding to have another color type, a conversion is done by LodePNG.
-
-The PNG specification gives the following color types:
-
-0: grayscale, bit depths 1, 2, 4, 8, 16
-2: RGB, bit depths 8 and 16
-3: palette, bit depths 1, 2, 4 and 8
-4: grayscale with alpha, bit depths 8 and 16
-6: RGBA, bit depths 8 and 16
-
-Bit depth is the amount of bits per pixel per color channel. So the total amount
-of bits per pixel is: amount of channels * bitdepth.
-
-6.2. color conversions
-----------------------
-
-As explained in the sections about the encoder and decoder, you can specify
-color types and bit depths in info_png and info_raw to change the default
-behaviour.
-
-If, when decoding, you want the raw image to be something else than the default,
-you need to set the color type and bit depth you want in the LodePNGColorMode,
-or the parameters colortype and bitdepth of the simple decoding function.
-
-If, when encoding, you use another color type than the default in the raw input
-image, you need to specify its color type and bit depth in the LodePNGColorMode
-of the raw image, or use the parameters colortype and bitdepth of the simple
-encoding function.
-
-If, when encoding, you don't want LodePNG to choose the output PNG color type
-but control it yourself, you need to set auto_convert in the encoder settings
-to false, and specify the color type you want in the LodePNGInfo of the
-encoder (including palette: it can generate a palette if auto_convert is true,
-otherwise not).
-
-If the input and output color type differ (whether user chosen or auto chosen),
-LodePNG will do a color conversion, which follows the rules below, and may
-sometimes result in an error.
-
-To avoid some confusion:
--the decoder converts from PNG to raw image
--the encoder converts from raw image to PNG
--the colortype and bitdepth in LodePNGColorMode info_raw, are those of the raw image
--the colortype and bitdepth in the color field of LodePNGInfo info_png, are those of the PNG
--when encoding, the color type in LodePNGInfo is ignored if auto_convert
- is enabled, it is automatically generated instead
--when decoding, the color type in LodePNGInfo is set by the decoder to that of the original
- PNG image, but it can be ignored since the raw image has the color type you requested instead
--if the color type of the LodePNGColorMode and PNG image aren't the same, a conversion
- between the color types is done if the color types are supported. If it is not
- supported, an error is returned. If the types are the same, no conversion is done.
--even though some conversions aren't supported, LodePNG supports loading PNGs from any
- colortype and saving PNGs to any colortype, sometimes it just requires preparing
- the raw image correctly before encoding.
--both encoder and decoder use the same color converter.
-
-The function lodepng_convert does the color conversion. It is available in the
-interface but normally isn't needed since the encoder and decoder already call
-it.
-
-Non supported color conversions:
--color to grayscale when non-gray pixels are present: no error is thrown, but
-the result will look ugly because only the red channel is taken (it assumes all
-three channels are the same in this case so ignores green and blue). The reason
-no error is given is to allow converting from three-channel grayscale images to
-one-channel even if there are numerical imprecisions.
--anything to palette when the palette does not have an exact match for a from-color
-in it: in this case an error is thrown
-
-Supported color conversions:
--anything to 8-bit RGB, 8-bit RGBA, 16-bit RGB, 16-bit RGBA
--any gray or gray+alpha, to gray or gray+alpha
--anything to a palette, as long as the palette has the requested colors in it
--removing alpha channel
--higher to smaller bitdepth, and vice versa
-
-If you want no color conversion to be done (e.g. for speed or control):
--In the encoder, you can make it save a PNG with any color type by giving the
-raw color mode and LodePNGInfo the same color mode, and setting auto_convert to
-false.
--In the decoder, you can make it store the pixel data in the same color type
-as the PNG has, by setting the color_convert setting to false. Settings in
-info_raw are then ignored.
-
-6.3. padding bits
------------------
-
-In the PNG file format, if a less than 8-bit per pixel color type is used and the scanlines
-have a bit amount that isn't a multiple of 8, then padding bits are used so that each
-scanline starts at a fresh byte. But that is NOT true for the LodePNG raw input and output.
-The raw input image you give to the encoder, and the raw output image you get from the decoder
-will NOT have these padding bits, e.g. in the case of a 1-bit image with a width
-of 7 pixels, the first pixel of the second scanline will the 8th bit of the first byte,
-not the first bit of a new byte.
-
-6.4. A note about 16-bits per channel and endianness
-----------------------------------------------------
-
-LodePNG uses unsigned char arrays for 16-bit per channel colors too, just like
-for any other color format. The 16-bit values are stored in big endian (most
-significant byte first) in these arrays. This is the opposite order of the
-little endian used by x86 CPU's.
-
-LodePNG always uses big endian because the PNG file format does so internally.
-Conversions to other formats than PNG uses internally are not supported by
-LodePNG on purpose, there are myriads of formats, including endianness of 16-bit
-colors, the order in which you store R, G, B and A, and so on. Supporting and
-converting to/from all that is outside the scope of LodePNG.
-
-This may mean that, depending on your use case, you may want to convert the big
-endian output of LodePNG to little endian with a for loop. This is certainly not
-always needed, many applications and libraries support big endian 16-bit colors
-anyway, but it means you cannot simply cast the unsigned char* buffer to an
-unsigned short* buffer on x86 CPUs.
-
-
-7. error values
----------------
-
-All functions in LodePNG that return an error code, return 0 if everything went
-OK, or a non-zero code if there was an error.
-
-The meaning of the LodePNG error values can be retrieved with the function
-lodepng_error_text: given the numerical error code, it returns a description
-of the error in English as a string.
-
-Check the implementation of lodepng_error_text to see the meaning of each code.
-
-It is not recommended to use the numerical values to programmatically make
-different decisions based on error types as the numbers are not guaranteed to
-stay backwards compatible. They are for human consumption only. Programmatically
-only 0 or non-0 matter.
-
-
-8. chunks and PNG editing
--------------------------
-
-If you want to add extra chunks to a PNG you encode, or use LodePNG for a PNG
-editor that should follow the rules about handling of unknown chunks, or if your
-program is able to read other types of chunks than the ones handled by LodePNG,
-then that's possible with the chunk functions of LodePNG.
-
-A PNG chunk has the following layout:
-
-4 bytes length
-4 bytes type name
-length bytes data
-4 bytes CRC
-
-8.1. iterating through chunks
------------------------------
-
-If you have a buffer containing the PNG image data, then the first chunk (the
-IHDR chunk) starts at byte number 8 of that buffer. The first 8 bytes are the
-signature of the PNG and are not part of a chunk. But if you start at byte 8
-then you have a chunk, and can check the following things of it.
-
-NOTE: none of these functions check for memory buffer boundaries. To avoid
-exploits, always make sure the buffer contains all the data of the chunks.
-When using lodepng_chunk_next, make sure the returned value is within the
-allocated memory.
-
-unsigned lodepng_chunk_length(const unsigned char* chunk):
-
-Get the length of the chunk's data. The total chunk length is this length + 12.
-
-void lodepng_chunk_type(char type[5], const unsigned char* chunk):
-unsigned char lodepng_chunk_type_equals(const unsigned char* chunk, const char* type):
-
-Get the type of the chunk or compare if it's a certain type
-
-unsigned char lodepng_chunk_critical(const unsigned char* chunk):
-unsigned char lodepng_chunk_private(const unsigned char* chunk):
-unsigned char lodepng_chunk_safetocopy(const unsigned char* chunk):
-
-Check if the chunk is critical in the PNG standard (only IHDR, PLTE, IDAT and IEND are).
-Check if the chunk is private (public chunks are part of the standard, private ones not).
-Check if the chunk is safe to copy. If it's not, then, when modifying data in a critical
-chunk, unsafe to copy chunks of the old image may NOT be saved in the new one if your
-program doesn't handle that type of unknown chunk.
-
-unsigned char* lodepng_chunk_data(unsigned char* chunk):
-const unsigned char* lodepng_chunk_data_const(const unsigned char* chunk):
-
-Get a pointer to the start of the data of the chunk.
-
-unsigned lodepng_chunk_check_crc(const unsigned char* chunk):
-void lodepng_chunk_generate_crc(unsigned char* chunk):
-
-Check if the crc is correct or generate a correct one.
-
-unsigned char* lodepng_chunk_next(unsigned char* chunk):
-const unsigned char* lodepng_chunk_next_const(const unsigned char* chunk):
-
-Iterate to the next chunk. This works if you have a buffer with consecutive chunks. Note that these
-functions do no boundary checking of the allocated data whatsoever, so make sure there is enough
-data available in the buffer to be able to go to the next chunk.
-
-unsigned lodepng_chunk_append(unsigned char** out, size_t* outsize, const unsigned char* chunk):
-unsigned lodepng_chunk_create(unsigned char** out, size_t* outsize, unsigned length,
-                              const char* type, const unsigned char* data):
-
-These functions are used to create new chunks that are appended to the data in *out that has
-length *outsize. The append function appends an existing chunk to the new data. The create
-function creates a new chunk with the given parameters and appends it. Type is the 4-letter
-name of the chunk.
-
-8.2. chunks in info_png
------------------------
-
-The LodePNGInfo struct contains fields with the unknown chunk in it. It has 3
-buffers (each with size) to contain 3 types of unknown chunks:
-the ones that come before the PLTE chunk, the ones that come between the PLTE
-and the IDAT chunks, and the ones that come after the IDAT chunks.
-It's necessary to make the distinction between these 3 cases because the PNG
-standard forces to keep the ordering of unknown chunks compared to the critical
-chunks, but does not force any other ordering rules.
-
-info_png.unknown_chunks_data[0] is the chunks before PLTE
-info_png.unknown_chunks_data[1] is the chunks after PLTE, before IDAT
-info_png.unknown_chunks_data[2] is the chunks after IDAT
-
-The chunks in these 3 buffers can be iterated through and read by using the same
-way described in the previous subchapter.
-
-When using the decoder to decode a PNG, you can make it store all unknown chunks
-if you set the option settings.remember_unknown_chunks to 1. By default, this
-option is off (0).
-
-The encoder will always encode unknown chunks that are stored in the info_png.
-If you need it to add a particular chunk that isn't known by LodePNG, you can
-use lodepng_chunk_append or lodepng_chunk_create to the chunk data in
-info_png.unknown_chunks_data[x].
-
-Chunks that are known by LodePNG should not be added in that way. E.g. to make
-LodePNG add a bKGD chunk, set background_defined to true and add the correct
-parameters there instead.
-
-
-9. compiler support
--------------------
-
-No libraries other than the current standard C library are needed to compile
-LodePNG. For the C++ version, only the standard C++ library is needed on top.
-Add the files lodepng.c(pp) and lodepng.h to your project, include
-lodepng.h where needed, and your program can read/write PNG files.
-
-It is compatible with C90 and up, and C++03 and up.
-
-If performance is important, use optimization when compiling! For both the
-encoder and decoder, this makes a large difference.
-
-Make sure that LodePNG is compiled with the same compiler of the same version
-and with the same settings as the rest of the program, or the interfaces with
-std::vectors and std::strings in C++ can be incompatible.
-
-CHAR_BITS must be 8 or higher, because LodePNG uses unsigned chars for octets.
-
-*) gcc and g++
-
-LodePNG is developed in gcc so this compiler is natively supported. It gives no
-warnings with compiler options "-Wall -Wextra -pedantic -ansi", with gcc and g++
-version 4.7.1 on Linux, 32-bit and 64-bit.
-
-*) Clang
-
-Fully supported and warning-free.
-
-*) Mingw
-
-The Mingw compiler (a port of gcc for Windows) should be fully supported by
-LodePNG.
-
-*) Visual Studio and Visual C++ Express Edition
-
-LodePNG should be warning-free with warning level W4. Two warnings were disabled
-with pragmas though: warning 4244 about implicit conversions, and warning 4996
-where it wants to use a non-standard function fopen_s instead of the standard C
-fopen.
-
-Visual Studio may want "stdafx.h" files to be included in each source file and
-give an error "unexpected end of file while looking for precompiled header".
-This is not standard C++ and will not be added to the stock LodePNG. You can
-disable it for lodepng.cpp only by right clicking it, Properties, C/C++,
-Precompiled Headers, and set it to Not Using Precompiled Headers there.
-
-NOTE: Modern versions of VS should be fully supported, but old versions, e.g.
-VS6, are not guaranteed to work.
-
-*) Compilers on Macintosh
-
-LodePNG has been reported to work both with gcc and LLVM for Macintosh, both for
-C and C++.
-
-*) Other Compilers
-
-If you encounter problems on any compilers, feel free to let me know and I may
-try to fix it if the compiler is modern and standards compliant.
-
-
-10. examples
-------------
-
-This decoder example shows the most basic usage of LodePNG. More complex
-examples can be found on the LodePNG website.
-
-NOTE: these examples do not support wide-character filenames, you can use an
-external method to handle such files and encode or decode in-memory
-
-10.1. decoder C++ example
--------------------------
-
-#include "lodepng.h"
-#include <iostream>
-
-int main(int argc, char *argv[]) {
-  const char* filename = argc > 1 ? argv[1] : "test.png";
-
-  //load and decode
-  std::vector<unsigned char> image;
-  unsigned width, height;
-  unsigned error = lodepng::decode(image, width, height, filename);
-
-  //if there's an error, display it
-  if(error) std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl;
-
-  //the pixels are now in the vector "image", 4 bytes per pixel, ordered RGBARGBA..., use it as texture, draw it, ...
-}
-
-10.2. decoder C example
------------------------
-
-#include "lodepng.h"
-
-int main(int argc, char *argv[]) {
-  unsigned error;
-  unsigned char* image;
-  size_t width, height;
-  const char* filename = argc > 1 ? argv[1] : "test.png";
-
-  error = lodepng_decode32_file(&image, &width, &height, filename);
-
-  if(error) printf("decoder error %u: %s\n", error, lodepng_error_text(error));
-
-  / * use image here * /
-
-  free(image);
-  return 0;
-}
-
-11. state settings reference
-----------------------------
-
-A quick reference of some settings to set on the LodePNGState
-
-For decoding:
-
-state.decoder.zlibsettings.ignore_adler32: ignore ADLER32 checksums
-state.decoder.zlibsettings.custom_...: use custom inflate function
-state.decoder.ignore_crc: ignore CRC checksums
-state.decoder.ignore_critical: ignore unknown critical chunks
-state.decoder.ignore_end: ignore missing IEND chunk. May fail if this corruption causes other errors
-state.decoder.color_convert: convert internal PNG color to chosen one
-state.decoder.read_text_chunks: whether to read in text metadata chunks
-state.decoder.remember_unknown_chunks: whether to read in unknown chunks
-state.info_raw.colortype: desired color type for decoded image
-state.info_raw.bitdepth: desired bit depth for decoded image
-state.info_raw....: more color settings, see struct LodePNGColorMode
-state.info_png....: no settings for decoder but ouput, see struct LodePNGInfo
-
-For encoding:
-
-state.encoder.zlibsettings.btype: disable compression by setting it to 0
-state.encoder.zlibsettings.use_lz77: use LZ77 in compression
-state.encoder.zlibsettings.windowsize: tweak LZ77 windowsize
-state.encoder.zlibsettings.minmatch: tweak min LZ77 length to match
-state.encoder.zlibsettings.nicematch: tweak LZ77 match where to stop searching
-state.encoder.zlibsettings.lazymatching: try one more LZ77 matching
-state.encoder.zlibsettings.custom_...: use custom deflate function
-state.encoder.auto_convert: choose optimal PNG color type, if 0 uses info_png
-state.encoder.filter_palette_zero: PNG filter strategy for palette
-state.encoder.filter_strategy: PNG filter strategy to encode with
-state.encoder.force_palette: add palette even if not encoding to one
-state.encoder.add_id: add LodePNG identifier and version as a text chunk
-state.encoder.text_compression: use compressed text chunks for metadata
-state.info_raw.colortype: color type of raw input image you provide
-state.info_raw.bitdepth: bit depth of raw input image you provide
-state.info_raw: more color settings, see struct LodePNGColorMode
-state.info_png.color.colortype: desired color type if auto_convert is false
-state.info_png.color.bitdepth: desired bit depth if auto_convert is false
-state.info_png.color....: more color settings, see struct LodePNGColorMode
-state.info_png....: more PNG related settings, see struct LodePNGInfo
-
-
-12. changes
------------
-
-The version number of LodePNG is the date of the change given in the format
-yyyymmdd.
-
-Some changes aren't backwards compatible. Those are indicated with a (!)
-symbol.
-
-Not all changes are listed here, the commit history in github lists more:
-https://github.com/lvandeve/lodepng
-
-*) 13 jun 2022: added support for the sBIT chunk.
-*) 09 jan 2022: minor decoder speed improvements.
-*) 27 jun 2021: added warnings that file reading/writing functions don't support
-   wide-character filenames (support for this is not planned, opening files is
-   not the core part of PNG decoding/decoding and is platform dependent).
-*) 17 okt 2020: prevent decoding too large text/icc chunks by default.
-*) 06 mar 2020: simplified some of the dynamic memory allocations.
-*) 12 jan 2020: (!) added 'end' argument to lodepng_chunk_next to allow correct
-   overflow checks.
-*) 14 aug 2019: around 25% faster decoding thanks to huffman lookup tables.
-*) 15 jun 2019: (!) auto_choose_color API changed (for bugfix: don't use palette
-   if gray ICC profile) and non-ICC LodePNGColorProfile renamed to
-   LodePNGColorStats.
-*) 30 dec 2018: code style changes only: removed newlines before opening braces.
-*) 10 sep 2018: added way to inspect metadata chunks without full decoding.
-*) 19 aug 2018: (!) fixed color mode bKGD is encoded with and made it use
-   palette index in case of palette.
-*) 10 aug 2018: (!) added support for gAMA, cHRM, sRGB and iCCP chunks. This
-   change is backwards compatible unless you relied on unknown_chunks for those.
-*) 11 jun 2018: less restrictive check for pixel size integer overflow
-*) 14 jan 2018: allow optionally ignoring a few more recoverable errors
-*) 17 sep 2017: fix memory leak for some encoder input error cases
-*) 27 nov 2016: grey+alpha auto color model detection bugfix
-*) 18 apr 2016: Changed qsort to custom stable sort (for platforms w/o qsort).
-*) 09 apr 2016: Fixed colorkey usage detection, and better file loading (within
-   the limits of pure C90).
-*) 08 dec 2015: Made load_file function return error if file can't be opened.
-*) 24 okt 2015: Bugfix with decoding to palette output.
-*) 18 apr 2015: Boundary PM instead of just package-merge for faster encoding.
-*) 24 aug 2014: Moved to github
-*) 23 aug 2014: Reduced needless memory usage of decoder.
-*) 28 jun 2014: Removed fix_png setting, always support palette OOB for
-    simplicity. Made ColorProfile public.
-*) 09 jun 2014: Faster encoder by fixing hash bug and more zeros optimization.
-*) 22 dec 2013: Power of two windowsize required for optimization.
-*) 15 apr 2013: Fixed bug with LAC_ALPHA and color key.
-*) 25 mar 2013: Added an optional feature to ignore some PNG errors (fix_png).
-*) 11 mar 2013: (!) Bugfix with custom free. Changed from "my" to "lodepng_"
-    prefix for the custom allocators and made it possible with a new #define to
-    use custom ones in your project without needing to change lodepng's code.
-*) 28 jan 2013: Bugfix with color key.
-*) 27 okt 2012: Tweaks in text chunk keyword length error handling.
-*) 8 okt 2012: (!) Added new filter strategy (entropy) and new auto color mode.
-    (no palette). Better deflate tree encoding. New compression tweak settings.
-    Faster color conversions while decoding. Some internal cleanups.
-*) 23 sep 2012: Reduced warnings in Visual Studio a little bit.
-*) 1 sep 2012: (!) Removed #define's for giving custom (de)compression functions
-    and made it work with function pointers instead.
-*) 23 jun 2012: Added more filter strategies. Made it easier to use custom alloc
-    and free functions and toggle #defines from compiler flags. Small fixes.
-*) 6 may 2012: (!) Made plugging in custom zlib/deflate functions more flexible.
-*) 22 apr 2012: (!) Made interface more consistent, renaming a lot. Removed
-    redundant C++ codec classes. Reduced amount of structs. Everything changed,
-    but it is cleaner now imho and functionality remains the same. Also fixed
-    several bugs and shrunk the implementation code. Made new samples.
-*) 6 nov 2011: (!) By default, the encoder now automatically chooses the best
-    PNG color model and bit depth, based on the amount and type of colors of the
-    raw image. For this, autoLeaveOutAlphaChannel replaced by auto_choose_color.
-*) 9 okt 2011: simpler hash chain implementation for the encoder.
-*) 8 sep 2011: lz77 encoder lazy matching instead of greedy matching.
-*) 23 aug 2011: tweaked the zlib compression parameters after benchmarking.
-    A bug with the PNG filtertype heuristic was fixed, so that it chooses much
-    better ones (it's quite significant). A setting to do an experimental, slow,
-    brute force search for PNG filter types is added.
-*) 17 aug 2011: (!) changed some C zlib related function names.
-*) 16 aug 2011: made the code less wide (max 120 characters per line).
-*) 17 apr 2011: code cleanup. Bugfixes. Convert low to 16-bit per sample colors.
-*) 21 feb 2011: fixed compiling for C90. Fixed compiling with sections disabled.
-*) 11 dec 2010: encoding is made faster, based on suggestion by Peter Eastman
-    to optimize long sequences of zeros.
-*) 13 nov 2010: added LodePNG_InfoColor_hasPaletteAlpha and
-    LodePNG_InfoColor_canHaveAlpha functions for convenience.
-*) 7 nov 2010: added LodePNG_error_text function to get error code description.
-*) 30 okt 2010: made decoding slightly faster
-*) 26 okt 2010: (!) changed some C function and struct names (more consistent).
-     Reorganized the documentation and the declaration order in the header.
-*) 08 aug 2010: only changed some comments and external samples.
-*) 05 jul 2010: fixed bug thanks to warnings in the new gcc version.
-*) 14 mar 2010: fixed bug where too much memory was allocated for char buffers.
-*) 02 sep 2008: fixed bug where it could create empty tree that linux apps could
-    read by ignoring the problem but windows apps couldn't.
-*) 06 jun 2008: added more error checks for out of memory cases.
-*) 26 apr 2008: added a few more checks here and there to ensure more safety.
-*) 06 mar 2008: crash with encoding of strings fixed
-*) 02 feb 2008: support for international text chunks added (iTXt)
-*) 23 jan 2008: small cleanups, and #defines to divide code in sections
-*) 20 jan 2008: support for unknown chunks allowing using LodePNG for an editor.
-*) 18 jan 2008: support for tIME and pHYs chunks added to encoder and decoder.
-*) 17 jan 2008: ability to encode and decode compressed zTXt chunks added
-    Also various fixes, such as in the deflate and the padding bits code.
-*) 13 jan 2008: Added ability to encode Adam7-interlaced images. Improved
-    filtering code of encoder.
-*) 07 jan 2008: (!) changed LodePNG to use ISO C90 instead of C++. A
-    C++ wrapper around this provides an interface almost identical to before.
-    Having LodePNG be pure ISO C90 makes it more portable. The C and C++ code
-    are together in these files but it works both for C and C++ compilers.
-*) 29 dec 2007: (!) changed most integer types to unsigned int + other tweaks
-*) 30 aug 2007: bug fixed which makes this Borland C++ compatible
-*) 09 aug 2007: some VS2005 warnings removed again
-*) 21 jul 2007: deflate code placed in new namespace separate from zlib code
-*) 08 jun 2007: fixed bug with 2- and 4-bit color, and small interlaced images
-*) 04 jun 2007: improved support for Visual Studio 2005: crash with accessing
-    invalid std::vector element [0] fixed, and level 3 and 4 warnings removed
-*) 02 jun 2007: made the encoder add a tag with version by default
-*) 27 may 2007: zlib and png code separated (but still in the same file),
-    simple encoder/decoder functions added for more simple usage cases
-*) 19 may 2007: minor fixes, some code cleaning, new error added (error 69),
-    moved some examples from here to lodepng_examples.cpp
-*) 12 may 2007: palette decoding bug fixed
-*) 24 apr 2007: changed the license from BSD to the zlib license
-*) 11 mar 2007: very simple addition: ability to encode bKGD chunks.
-*) 04 mar 2007: (!) tEXt chunk related fixes, and support for encoding
-    palettized PNG images. Plus little interface change with palette and texts.
-*) 03 mar 2007: Made it encode dynamic Huffman shorter with repeat codes.
-    Fixed a bug where the end code of a block had length 0 in the Huffman tree.
-*) 26 feb 2007: Huffman compression with dynamic trees (BTYPE 2) now implemented
-    and supported by the encoder, resulting in smaller PNGs at the output.
-*) 27 jan 2007: Made the Adler-32 test faster so that a timewaste is gone.
-*) 24 jan 2007: gave encoder an error interface. Added color conversion from any
-    greyscale type to 8-bit greyscale with or without alpha.
-*) 21 jan 2007: (!) Totally changed the interface. It allows more color types
-    to convert to and is more uniform. See the manual for how it works now.
-*) 07 jan 2007: Some cleanup & fixes, and a few changes over the last days:
-    encode/decode custom tEXt chunks, separate classes for zlib & deflate, and
-    at last made the decoder give errors for incorrect Adler32 or Crc.
-*) 01 jan 2007: Fixed bug with encoding PNGs with less than 8 bits per channel.
-*) 29 dec 2006: Added support for encoding images without alpha channel, and
-    cleaned out code as well as making certain parts faster.
-*) 28 dec 2006: Added "Settings" to the encoder.
-*) 26 dec 2006: The encoder now does LZ77 encoding and produces much smaller files now.
-    Removed some code duplication in the decoder. Fixed little bug in an example.
-*) 09 dec 2006: (!) Placed output parameters of public functions as first parameter.
-    Fixed a bug of the decoder with 16-bit per color.
-*) 15 okt 2006: Changed documentation structure
-*) 09 okt 2006: Encoder class added. It encodes a valid PNG image from the
-    given image buffer, however for now it's not compressed.
-*) 08 sep 2006: (!) Changed to interface with a Decoder class
-*) 30 jul 2006: (!) LodePNG_InfoPng , width and height are now retrieved in different
-    way. Renamed decodePNG to decodePNGGeneric.
-*) 29 jul 2006: (!) Changed the interface: image info is now returned as a
-    struct of type LodePNG::LodePNG_Info, instead of a vector, which was a bit clumsy.
-*) 28 jul 2006: Cleaned the code and added new error checks.
-    Corrected terminology "deflate" into "inflate".
-*) 23 jun 2006: Added SDL example in the documentation in the header, this
-    example allows easy debugging by displaying the PNG and its transparency.
-*) 22 jun 2006: (!) Changed way to obtain error value. Added
-    loadFile function for convenience. Made decodePNG32 faster.
-*) 21 jun 2006: (!) Changed type of info vector to unsigned.
-    Changed position of palette in info vector. Fixed an important bug that
-    happened on PNGs with an uncompressed block.
-*) 16 jun 2006: Internally changed unsigned into unsigned where
-    needed, and performed some optimizations.
-*) 07 jun 2006: (!) Renamed functions to decodePNG and placed them
-    in LodePNG namespace. Changed the order of the parameters. Rewrote the
-    documentation in the header. Renamed files to lodepng.cpp and lodepng.h
-*) 22 apr 2006: Optimized and improved some code
-*) 07 sep 2005: (!) Changed to std::vector interface
-*) 12 aug 2005: Initial release (C++, decoder only)
-
-
-13. contact information
------------------------
-
-Feel free to contact me with suggestions, problems, comments, ... concerning
-LodePNG. If you encounter a PNG image that doesn't work properly with this
-decoder, feel free to send it and I'll use it to find and fix the problem.
-
-My email address is (puzzle the account and domain together with an @ symbol):
-Domain: gmail dot com.
-Account: lode dot vandevenne.
-
-
-Copyright (c) 2005-2022 Lode Vandevenne
-*/
diff --git a/libs/litehtml/containers/test/test_container.cpp b/libs/litehtml/containers/test/test_container.cpp
deleted file mode 100644
index 45577106c6..0000000000
--- a/libs/litehtml/containers/test/test_container.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-#include "test_container.h"
-#include "Font.h"
-string readfile(string filename);
-
-// note: font is selected only by size, name and style are not used
-uint_ptr test_container::create_font(const char* /*faceName*/, int size, int /*weight*/, font_style /*italic*/, unsigned int /*decoration*/, font_metrics* fm)
-{
-	Font* font = new Font(size);
-
-	if (fm)
-	{
-		fm->ascent   = font->ascent;
-		fm->descent  = font->descent;
-		fm->height   = font->height;
-		fm->x_height = font->x_height;
-	}
-	return (uint_ptr)font;
-}
-
-int test_container::text_width(const char* text, uint_ptr hFont)
-{
-	Font* font = (Font*)hFont;
-	return (int)strlen(text) * font->width;
-}
-
-void test_container::draw_text(uint_ptr hdc, const char* text, uint_ptr hFont, web_color color, const position& pos)
-{
-	auto bmp = (Bitmap*)hdc;
-	Font* font = (Font*)hFont;
-
-	int x = pos.x;
-	for (auto p = text; *p; p++)
-	{
-		Bitmap glyph = font->get_glyph(*p, color);
-		bmp->draw_bitmap(x, pos.y, glyph);
-		x += glyph.width;
-	}
-}
-
-int test_container::pt_to_px(int pt) const { return pt * 96 / 72; }
-int test_container::get_default_font_size() const { return 16; }
-const char* test_container::get_default_font_name() const { return ""; }
-
-void test_container::draw_solid_fill(litehtml::uint_ptr hdc, const background_layer& layer, const web_color& color)
-{
-	auto bmp = (Bitmap*)hdc;
-	bmp->fill_rect(layer.border_box, color);
-}
-
-void test_container::draw_borders(uint_ptr hdc, const borders& borders, const position& pos, bool /*root*/)
-{
-	auto bmp = (Bitmap*)hdc;
-
-	// left border
-	for (int x = 0; x < borders.left.width; x++)
-		bmp->draw_line(
-			pos.left() + x, pos.top(), 
-			pos.left() + x, pos.bottom(), borders.left.color);
-
-	// right border
-	for (int x = 0; x < borders.right.width; x++)
-		bmp->draw_line(
-			pos.right() - x - 1, pos.top(),
-			pos.right() - x - 1, pos.bottom(), borders.right.color);
-
-	// top border
-	for (int y = 0; y < borders.top.width; y++)
-		bmp->draw_line(
-			pos.left(),  pos.top() + y,
-			pos.right(), pos.top() + y, borders.top.color);
-
-	// bottom border
-	for (int y = 0; y < borders.bottom.width; y++)
-		bmp->draw_line(
-			pos.left(),  pos.bottom() - y - 1,
-			pos.right(), pos.bottom() - y - 1, borders.bottom.color);
-}
-
-void test_container::draw_list_marker(uint_ptr hdc, const list_marker& marker)
-{
-	auto bmp = (Bitmap*)hdc;
-	bmp->fill_rect(marker.pos, marker.color);
-}
-
-void test_container::import_css(string& text, const string& url, string& baseurl)
-{
-	baseurl = basedir + "/" + url;
-	text = readfile(baseurl);
-}
-
-void test_container::get_client_rect(position& client) const
-{
-	client = position(0, 0, width, height);
-}
diff --git a/libs/litehtml/containers/test/test_container.h b/libs/litehtml/containers/test/test_container.h
deleted file mode 100644
index 45a452a609..0000000000
--- a/libs/litehtml/containers/test/test_container.h
+++ /dev/null
@@ -1,46 +0,0 @@
-#include <litehtml.h>
-using namespace litehtml;
-
-class test_container : public document_container
-{
-public:
-	int width;
-	int height;
-	string basedir;
-
-	test_container(int width, int height, string basedir) : width(width), height(height), basedir(basedir) {}
-
-	uint_ptr		create_font(const char* faceName, int size, int weight, font_style italic, unsigned int decoration, font_metrics* fm) override;
-	void			delete_font(uint_ptr /*hFont*/) override {}
-	int				text_width(const char* text, uint_ptr hFont) override;
-	void			draw_text(uint_ptr hdc, const char* text, uint_ptr hFont, web_color color, const position& pos) override;
-	int				pt_to_px(int pt) const override;
-	int				get_default_font_size() const override;
-	const char*		get_default_font_name() const override;
-	void 			load_image(const char* /*src*/, const char* /*baseurl*/, bool /*redraw_on_ready*/) override {}
-	void			get_image_size(const char* /*src*/, const char* /*baseurl*/, size& /*sz*/) override {}
-	void			draw_image(litehtml::uint_ptr /*hdc*/, const background_layer& /*layer*/, const std::string& /*url*/, const std::string& /*base_url*/) override {};
-	void			draw_solid_fill(litehtml::uint_ptr hdc, const background_layer& layer, const web_color& color) override;
-	void			draw_linear_gradient(litehtml::uint_ptr /*hdc*/, const background_layer& /*layer*/, const background_layer::linear_gradient& /*gradient*/) override {};
-	void			draw_radial_gradient(litehtml::uint_ptr /*hdc*/, const background_layer& /*layer*/, const background_layer::radial_gradient& /*gradient*/) override {};
-	void 			draw_conic_gradient(litehtml::uint_ptr /*hdc*/, const litehtml::background_layer& /*layer*/, const litehtml::background_layer::conic_gradient& /*gradient*/) override {};
-	void			draw_borders(uint_ptr hdc, const borders& borders, const position& draw_pos, bool root) override;
-	void 			draw_list_marker(uint_ptr hdc, const list_marker& marker) override;
-	element::ptr	create_element(const char* /*tag_name*/,
-								   const string_map& /*attributes*/,
-								   const document::ptr& /*doc*/) override { return nullptr; }
-	void			get_media_features(media_features& /*media*/) const override {}
-	void			get_language(string& /*language*/, string& /*culture*/) const override {}
-	void 			link(const document::ptr& /*doc*/, const element::ptr& /*el*/) override {}
-
-	void			transform_text(string& /*text*/, text_transform /*tt*/) override {}
-	void			set_clip(const position& /*pos*/, const border_radiuses& /*bdr_radius*/) override {}
-	void			del_clip() override {}
-
-	void 			set_caption(const char* /*caption*/) override {}
-	void 			set_base_url(const char* /*base_url*/) override {}
-	void			on_anchor_click(const char* /*url*/, const element::ptr& /*el*/) override {}
-	void			set_cursor(const char* /*cursor*/) override {}
-	void			import_css(string& text, const string& url, string& baseurl) override;
-	void			get_client_rect(position& client) const override;
-};
\ No newline at end of file
diff --git a/libs/litehtml/containers/windows/cairo/cairo_font.cpp b/libs/litehtml/containers/windows/cairo/cairo_font.cpp
deleted file mode 100644
index 76dcaa5ee8..0000000000
--- a/libs/litehtml/containers/windows/cairo/cairo_font.cpp
+++ /dev/null
@@ -1,374 +0,0 @@
-#include "cairo_font.h"
-
-cairo_font::cairo_font(IMLangFontLink2* fl, HFONT hFont, int size )
-{
-	init();
-	m_font_link = fl;
-	if(m_font_link)
-	{
-		m_font_link->AddRef();
-	}
-	m_size = size;
-	set_font(hFont);
-}
-
-cairo_font::cairo_font(IMLangFontLink2* fl, LPCWSTR facename, int size, int weight, BOOL italic, BOOL strikeout, BOOL underline )
-{
-	init();
-	m_size = size;
-	m_font_link = fl;
-	if(m_font_link)
-	{
-		m_font_link->AddRef();
-	}
-
-	LOGFONT lf;
-	ZeroMemory(&lf, sizeof(lf));
-	if(!lstrcmpi(facename, L"monospace"))
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, L"Courier New");
-	} else if(!lstrcmpi(facename, L"serif"))
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, L"Times New Roman");
-	} else if(!lstrcmpi(facename, L"sans-serif"))
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, L"Arial");
-	} else if(!lstrcmpi(facename, L"fantasy"))
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, L"Impact");
-	} else if(!lstrcmpi(facename, L"cursive"))
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, L"Comic Sans MS");
-	} else
-	{
-		wcscpy_s(lf.lfFaceName, LF_FACESIZE, facename);
-	}
-
-	lf.lfHeight			= -size;
-	lf.lfWeight			= weight;
-	lf.lfItalic			= italic;
-	lf.lfCharSet		= DEFAULT_CHARSET;
-	lf.lfOutPrecision	= OUT_DEFAULT_PRECIS;
-	lf.lfClipPrecision	= CLIP_DEFAULT_PRECIS;
-	lf.lfQuality		= DEFAULT_QUALITY;
-	lf.lfStrikeOut		= strikeout;
-	lf.lfUnderline		= underline;
-
-	HFONT fnt = CreateFontIndirect(&lf);
-	set_font(fnt);
-}
-
-cairo_font::~cairo_font()
-{
-	if(m_font_face)
-	{
-		cairo_font_face_destroy(m_font_face);
-	}
-	for(size_t i = 0; i < m_linked_fonts.size(); i++)
-	{
-		if(m_linked_fonts[i]->hFont)
-		{
-			m_font_link->ReleaseFont(m_linked_fonts[i]->hFont);
-		}
-		if(m_linked_fonts[i]->font_face)
-		{
-			cairo_font_face_destroy(m_linked_fonts[i]->font_face);
-		}
-	}
-	m_linked_fonts.clear();
-	if(m_font_link)
-	{
-		m_font_link->AddRef();
-	}
-	if(m_hFont)
-	{
-		DeleteObject(m_hFont);
-	}
-}
-
-void cairo_font::show_text( cairo_t* cr, int x, int y, const char* str )
-{
-	lock();
-	text_chunk::vector chunks;
-	split_text(str, chunks);
-	cairo_set_font_size(cr, m_size);
-	cairo_move_to(cr, x, y);
-	for(size_t i = 0; i < chunks.size(); i++)
-	{
-		if(chunks[i]->font)
-		{
-			cairo_set_font_face(cr, chunks[i]->font->font_face);
-		} else
-		{
-			cairo_set_font_face(cr, m_font_face);
-		}
-		cairo_show_text(cr, chunks[i]->text);
-	}
-	unlock();
-
-	if(m_bUnderline)
-	{
-		int tw = text_width(cr, chunks);
-
-		lock();
-		cairo_set_line_width(cr, 1);
-		cairo_move_to(cr, x, y + 1.5);
-		cairo_line_to(cr, x + tw, y + 1.5);
-		cairo_stroke(cr);
-		unlock();
-	}
-	if(m_bStrikeOut)
-	{
-		int tw = text_width(cr, chunks);
-
-		cairo_font_metrics fm;
-		get_metrics(cr, &fm);
-
-		int ln_y = y - fm.x_height / 2;
-
-		lock();
-		cairo_set_line_width(cr, 1);
-		cairo_move_to(cr, x, (double) ln_y - 0.5);
-		cairo_line_to(cr, x + tw, (double) ln_y - 0.5);
-		cairo_stroke(cr);
-		unlock();
-	}
-
-	free_text_chunks(chunks);
-}
-
-void cairo_font::split_text( const char* src, text_chunk::vector& chunks )
-{
-	auto str = cairo_font::utf8_to_wchar(src);
-	const wchar_t* str_start = str.c_str();
-
-	int cch = str.length();
-
-	HDC hdc = GetDC(NULL);
-	SelectObject(hdc, m_hFont);
-	HRESULT hr = S_OK;
-	while(cch > 0)
-	{
-		DWORD dwActualCodePages;
-		long cchActual;
-		if(m_font_link)
-		{
-			hr = m_font_link->GetStrCodePages(str.c_str(), cch, m_font_code_pages, &dwActualCodePages, &cchActual);
-		} else
-		{
-			hr = S_FALSE;
-		}
-		
-		if(hr != S_OK)
-		{
-			break;
-		}
-		
-		text_chunk* chk = new text_chunk;
-
-		int sz = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), cchActual, chk->text, 0, NULL, NULL) + 1;
-		chk->text = new CHAR[sz];
-		sz = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), cchActual, chk->text, sz, NULL, NULL);
-		chk->text[sz] = 0;
-		chk->font = NULL;
-
-		if(!(dwActualCodePages & m_font_code_pages))
-		{
-			for(linked_font::vector::iterator i = m_linked_fonts.begin(); i != m_linked_fonts.end(); i++)
-			{
-				if((*i)->code_pages == dwActualCodePages)
-				{
-					chk->font = (*i);
-					break;
-				}
-			}
-			if(!chk->font)
-			{
-				linked_font* lkf = new linked_font;
-				lkf->code_pages	= dwActualCodePages;
-				lkf->hFont		= NULL;
-				m_font_link->MapFont(hdc, dwActualCodePages, 0, &lkf->hFont);
-				if (lkf->hFont)
-				{
-					lkf->font_face = create_font_face(lkf->hFont);
-					m_linked_fonts.push_back(lkf);
-				}
-				else
-				{
-					delete lkf;
-					lkf = NULL;
-				}
-				chk->font = lkf;
-			}
-		}
-
-		chunks.push_back(chk);
-
-		cch -= cchActual;
-		str += cchActual;
-	}
-
-	if(hr != S_OK)
-	{
-		text_chunk* chk = new text_chunk;
-
-		int sz = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), -1, chk->text, 0, NULL, NULL) + 1;
-		chk->text = new CHAR[sz];
-		sz = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), -1, chk->text, sz, NULL, NULL);
-		chk->text[sz] = 0;
-		chk->font = NULL;
-		chunks.push_back(chk);
-	}
-
-	ReleaseDC(NULL, hdc);
-}
-
-void cairo_font::free_text_chunks( text_chunk::vector& chunks )
-{
-	for(size_t i = 0; i < chunks.size(); i++)
-	{
-		delete chunks[i];
-	}
-	chunks.clear();
-}
-
-cairo_font_face_t* cairo_font::create_font_face( HFONT fnt )
-{
-	LOGFONT lf;
-	GetObject(fnt, sizeof(LOGFONT), &lf);
-	return cairo_win32_font_face_create_for_logfontw(&lf);
-}
-
-int cairo_font::text_width( cairo_t* cr, const char* str )
-{
-	text_chunk::vector chunks;
-	split_text(str, chunks);
-
-	int ret = text_width(cr, chunks);
-
-	free_text_chunks(chunks);
-
-	return (int) ret;
-}
-
-int cairo_font::text_width( cairo_t* cr, text_chunk::vector& chunks )
-{
-	lock();
-	cairo_set_font_size(cr, m_size);
-	double ret = 0;
-	for(size_t i = 0; i < chunks.size(); i++)
-	{
-		if(chunks[i]->font)
-		{
-			cairo_set_font_face(cr, chunks[i]->font->font_face);
-		} else
-		{
-			cairo_set_font_face(cr, m_font_face);
-		}
-		cairo_text_extents_t ext;
-		cairo_text_extents(cr, chunks[i]->text, &ext);
-		ret += ext.x_advance;
-	}
-	unlock();
-
-	return (int) ret;
-}
-
-void cairo_font::get_metrics(cairo_t* cr, cairo_font_metrics* fm )
-{
-	lock();
-	cairo_set_font_face(cr, m_font_face);
-	cairo_set_font_size(cr, m_size);
-	cairo_font_extents_t ext;
-	cairo_font_extents(cr, &ext);
-
-	cairo_text_extents_t tex;
-	cairo_text_extents(cr, "x", &tex);
-
-	fm->ascent		= (int) ext.ascent;
-	fm->descent		= (int) ext.descent;
-	fm->height		= (int) (ext.ascent + ext.descent);
-	fm->x_height	= (int) tex.height;
-	unlock();
-}
-
-void cairo_font::set_font( HFONT hFont )
-{
-	clear();
-
-	m_hFont				= hFont;
-	m_font_face			= create_font_face(m_hFont);
-	m_font_code_pages	= 0;
-	if(m_font_link)
-	{
-		HDC hdc = GetDC(NULL);
-		SelectObject(hdc, m_hFont);
-		m_font_link->GetFontCodePages(hdc, m_hFont, &m_font_code_pages);
-		ReleaseDC(NULL, hdc);
-	}
-	LOGFONT lf;
-	GetObject(m_hFont, sizeof(LOGFONT), &lf);
-	m_bUnderline	= lf.lfUnderline;
-	m_bStrikeOut	= lf.lfStrikeOut;
-}
-
-void cairo_font::clear()
-{
-	if(m_font_face)
-	{
-		cairo_font_face_destroy(m_font_face);
-		m_font_face = NULL;
-	}
-	for(size_t i = 0; i < m_linked_fonts.size(); i++)
-	{
-		if(m_linked_fonts[i]->hFont && m_font_link)
-		{
-			m_font_link->ReleaseFont(m_linked_fonts[i]->hFont);
-		}
-		if(m_linked_fonts[i]->font_face)
-		{
-			cairo_font_face_destroy(m_linked_fonts[i]->font_face);
-		}
-	}
-	m_linked_fonts.clear();
-	if(m_hFont)
-	{
-		DeleteObject(m_hFont);
-		m_hFont = NULL;
-	}
-}
-
-void cairo_font::init()
-{
-	m_hFont				= NULL;
-	m_font_face			= NULL;
-	m_font_link			= NULL;
-	m_font_code_pages	= 0;
-	m_size				= 0;
-	m_bUnderline		= FALSE;
-	m_bStrikeOut		= FALSE;
-}
-
-std::wstring cairo_font::utf8_to_wchar(const std::string& src )
-{
-	if (src.empty()) return std::wstring();
-
-	int len = (int) src.size();
-	wchar_t* str = new wchar_t[len + 1];
-	MultiByteToWideChar(CP_UTF8, 0, src.c_str(), -1, str, len + 1);
-	std::wstring ret(str);
-	delete str;
-	return ret;
-}
-
-std::string cairo_font::wchar_to_utf8(const std::wstring& src)
-{
-	if(src.empty()) return std::string();
-
-	int len = WideCharToMultiByte(CP_UTF8, 0, src.c_str(), -1, NULL, 0, NULL, NULL);
-	char* str = new char[len];
-	WideCharToMultiByte(CP_UTF8, 0, src.c_str(), -1, str, len, NULL, NULL);
-	std::string ret(str);
-	delete str;
-	return ret;
-}
diff --git a/libs/litehtml/containers/windows/cairo/cairo_font.h b/libs/litehtml/containers/windows/cairo/cairo_font.h
deleted file mode 100644
index fc9dd84edf..0000000000
--- a/libs/litehtml/containers/windows/cairo/cairo_font.h
+++ /dev/null
@@ -1,120 +0,0 @@
-#pragma once
-
-#ifndef NOMINMAX
-#define NOMINMAX
-#endif
-#include <windows.h>
-#include <stdlib.h>
-#include <malloc.h>
-#include <memory.h>
-#include <tchar.h>
-#include <mlang.h>
-#include <vector>
-#include <cairo.h>
-#include <cairo-win32.h>
-#include <litehtml.h>
-
-struct linked_font
-{
-	typedef std::vector<linked_font*>	vector;
-
-	DWORD				code_pages;
-	HFONT				hFont;
-	cairo_font_face_t*	font_face;
-};
-
-struct text_chunk
-{
-	typedef std::vector<text_chunk*>	vector;
-
-	char*			text;
-	linked_font*	font;
-
-	~text_chunk()
-	{
-		if(text)
-		{
-			delete text;
-		}
-	}
-};
-
-struct cairo_font_metrics
-{
-	int		height;
-	int		ascent;
-	int		descent;
-	int		x_height;
-};
-
-
-class cairo_font
-{
-	HFONT				m_hFont;
-	cairo_font_face_t*	m_font_face;
-	IMLangFontLink2*	m_font_link;
-	DWORD				m_font_code_pages;
-	linked_font::vector	m_linked_fonts;
-	int					m_size;
-	BOOL				m_bUnderline;
-	BOOL				m_bStrikeOut;
-	cairo_font_metrics	m_metrics;
-public:
-	// fonts are not thread safe :(
-	// you have to declare and initialize cairo_font::m_sync before the first using.
-	static CRITICAL_SECTION	m_sync;
-
-	cairo_font(IMLangFontLink2* fl, HFONT hFont, int size);
-	cairo_font(IMLangFontLink2* fl, LPCWSTR facename, int size, int weight, BOOL italic, BOOL strikeout, BOOL underline);
-
-	void init();
-	~cairo_font();
-
-	void				show_text(cairo_t* cr, int x, int y, const char*);
-	int					text_width(cairo_t* cr, const char* str);
-	void				load_metrics(cairo_t* cr);
-	cairo_font_metrics&	metrics();
-	static std::wstring	utf8_to_wchar(const std::string& src);
-	static std::string	wchar_to_utf8(const std::wstring& src);
-private:
-	void				split_text(const char* str, text_chunk::vector& chunks);
-	void				free_text_chunks(text_chunk::vector& chunks);
-	cairo_font_face_t*	create_font_face(HFONT fnt);
-	void				set_font(HFONT hFont);
-	void				clear();
-	int					text_width(cairo_t* cr, text_chunk::vector& chunks);
-	void				lock();
-	void				unlock();
-	int					round_d(double val);
-	void				get_metrics(cairo_t* cr, cairo_font_metrics* fm);
-};
-
-inline void cairo_font::lock()
-{
-	EnterCriticalSection(&m_sync);
-}
-
-inline void cairo_font::unlock()
-{
-	LeaveCriticalSection(&m_sync);
-}
-
-inline int cairo_font::round_d(double val)
-{
-	int int_val = (int) val;
-	if(val - int_val >= 0.5)
-	{
-		int_val++;
-	}
-	return int_val;
-}
-
-inline cairo_font_metrics& cairo_font::metrics()
-{ 
-	return m_metrics; 
-}
-
-inline void cairo_font::load_metrics(cairo_t* cr)
-{
-	get_metrics(cr, &m_metrics);
-}
diff --git a/libs/litehtml/containers/windows/cairo/windows_container.cpp b/libs/litehtml/containers/windows/cairo/windows_container.cpp
deleted file mode 100644
index 94b22034b0..0000000000
--- a/libs/litehtml/containers/windows/cairo/windows_container.cpp
+++ /dev/null
@@ -1,194 +0,0 @@
-#include "windows_container.h"
-#define _USE_MATH_DEFINES
-#include <math.h>
-#include "cairo_font.h"
-#include <strsafe.h>
-
-windows_container::windows_container(void)
-{
-	m_temp_surface	= cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 2, 2);
-	m_temp_cr		= cairo_create(m_temp_surface);
-	m_font_link		= NULL;
-	CoCreateInstance(CLSID_CMultiLanguage, NULL, CLSCTX_ALL, IID_IMLangFontLink2, (void**) &m_font_link);
-}
-
-windows_container::~windows_container(void)
-{
-	clear_images();
-	if(m_font_link)
-	{
-		m_font_link->Release();
-	}
-	cairo_surface_destroy(m_temp_surface);
-	cairo_destroy(m_temp_cr);
-}
-
-litehtml::uint_ptr windows_container::create_font( const char* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm )
-{
-	std::wstring fnt_name = L"sans-serif";
-
-	litehtml::string_vector fonts;
-	litehtml::split_string(faceName, fonts, ",");
-	if(!fonts.empty())
-	{
-		litehtml::trim(fonts[0]);
-		fnt_name = cairo_font::utf8_to_wchar(fonts[0]);
-		if (fnt_name.front() == L'"' || fnt_name.front() == L'\'')
-		{
-			fnt_name.erase(0, 1);
-		}
-		if (fnt_name.back() == L'"' || fnt_name.back() == L'\'')
-		{
-			fnt_name.erase(fnt_name.length() - 1, 1);
-		}
-	}
-
-	cairo_font* fnt = new cairo_font(	m_font_link,
-										fnt_name.c_str(), 
-										size, 
-										weight, 
-										(italic == litehtml::font_style_italic) ? TRUE : FALSE,
-										(decoration & litehtml::font_decoration_linethrough) ? TRUE : FALSE,
-										(decoration & litehtml::font_decoration_underline) ? TRUE : FALSE);
-
-	cairo_save(m_temp_cr);
-	fnt->load_metrics(m_temp_cr);
-
-	if(fm)
-	{
-		fm->ascent		= fnt->metrics().ascent;
-		fm->descent		= fnt->metrics().descent;
-		fm->height		= fnt->metrics().height;
-		fm->x_height	= fnt->metrics().x_height;
-		if(italic == litehtml::font_style_italic || decoration)
-		{
-			fm->draw_spaces = true;
-		} else
-		{
-			fm->draw_spaces = false;
-		}
-	}
-
-	cairo_restore(m_temp_cr);
-
-	return (litehtml::uint_ptr) fnt;
-}
-
-void windows_container::delete_font( litehtml::uint_ptr hFont )
-{
-	cairo_font* fnt = (cairo_font*) hFont;
-	if(fnt)
-	{
-		delete fnt;
-	}
-}
-
-int windows_container::text_width( const char* text, litehtml::uint_ptr hFont )
-{
-	cairo_font* fnt = (cairo_font*) hFont;
-	
-	cairo_save(m_temp_cr);
-	int ret = fnt->text_width(m_temp_cr, text);
-	cairo_restore(m_temp_cr);
-	return ret;
-}
-
-void windows_container::draw_text( litehtml::uint_ptr hdc, const char* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos )
-{
-	if(hFont)
-	{
-		cairo_font* fnt = (cairo_font*) hFont;
-		cairo_t* cr		= (cairo_t*) hdc;
-		cairo_save(cr);
-
-		apply_clip(cr);
-
-		int x = pos.left();
-		int y = pos.bottom() - fnt->metrics().descent;
-
-		set_color(cr, color);
-		fnt->show_text(cr, x, y, text);
-
-		cairo_restore(cr);
-	}
-}
-
-litehtml::string windows_container::resolve_color(const litehtml::string& color) const
-{
-	struct custom_color 
-	{
-		const char*	name;
-		int color_index;
-	};
-
-	static custom_color colors[] = {
-		{ "ActiveBorder",          COLOR_ACTIVEBORDER},
-		{ "ActiveCaption",         COLOR_ACTIVECAPTION},
-		{ "AppWorkspace",          COLOR_APPWORKSPACE },
-		{ "Background",            COLOR_BACKGROUND },
-		{ "ButtonFace",            COLOR_BTNFACE },
-		{ "ButtonHighlight",       COLOR_BTNHIGHLIGHT },
-		{ "ButtonShadow",          COLOR_BTNSHADOW },
-		{ "ButtonText",            COLOR_BTNTEXT },
-		{ "CaptionText",           COLOR_CAPTIONTEXT },
-		{ "GrayText",              COLOR_GRAYTEXT },
-		{ "Highlight",             COLOR_HIGHLIGHT },
-		{ "HighlightText",         COLOR_HIGHLIGHTTEXT },
-		{ "InactiveBorder",        COLOR_INACTIVEBORDER },
-		{ "InactiveCaption",       COLOR_INACTIVECAPTION },
-		{ "InactiveCaptionText",   COLOR_INACTIVECAPTIONTEXT },
-		{ "InfoBackground",        COLOR_INFOBK },
-		{ "InfoText",              COLOR_INFOTEXT },
-		{ "Menu",                  COLOR_MENU },
-		{ "MenuText",              COLOR_MENUTEXT },
-		{ "Scrollbar",             COLOR_SCROLLBAR },
-		{ "ThreeDDarkShadow",      COLOR_3DDKSHADOW },
-		{ "ThreeDFace",            COLOR_3DFACE },
-		{ "ThreeDHighlight",       COLOR_3DHILIGHT },
-		{ "ThreeDLightShadow",     COLOR_3DLIGHT },
-		{ "ThreeDShadow",          COLOR_3DSHADOW },
-		{ "Window",                COLOR_WINDOW },
-		{ "WindowFrame",           COLOR_WINDOWFRAME },
-		{ "WindowText",            COLOR_WINDOWTEXT }
-	};
-
-    for (auto& clr : colors)
-    {
-		if (!litehtml::t_strcasecmp(clr.name, color.c_str()))
-        {
-            char  str_clr[20];
-            DWORD rgb_color =  GetSysColor(clr.color_index);
-            StringCchPrintfA(str_clr, 20, "#%02X%02X%02X", GetRValue(rgb_color), GetGValue(rgb_color), GetBValue(rgb_color));
-            return std::move(litehtml::string(str_clr));
-        }
-    }
-    return std::move(litehtml::string());
-}
-
-cairo_surface_t* windows_container::get_image(const std::string &)
-{
-	return nullptr;
-}
-
-double windows_container::get_screen_dpi() const
-{
-	HDC hdc = GetDC(NULL);
-	int ret = GetDeviceCaps(hdc, LOGPIXELSX);
-	ReleaseDC(NULL, hdc);
-	return ret;
-}
-
-int windows_container::get_screen_width() const
-{
-	HDC hdc = GetDC(NULL);
-	int ret = GetDeviceCaps(hdc, HORZRES);
-	ReleaseDC(NULL, hdc);
-	return ret;
-}
-int windows_container::get_screen_height() const
-{
-	HDC hdc = GetDC(NULL);
-	int ret = GetDeviceCaps(hdc, VERTRES);
-	ReleaseDC(NULL, hdc);
-	return ret;
-}
diff --git a/libs/litehtml/containers/windows/cairo/windows_container.h b/libs/litehtml/containers/windows/cairo/windows_container.h
deleted file mode 100644
index daae519cab..0000000000
--- a/libs/litehtml/containers/windows/cairo/windows_container.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#pragma once
-#ifndef NOMINMAX
-#define NOMINMAX
-#endif
-#include <windows.h>
-#include <mlang.h>
-#include <stdlib.h>
-#include <malloc.h>
-#include <memory.h>
-#include <tchar.h>
-#include <vector>
-#include "cairo.h"
-#include "cairo-win32.h"
-#include <litehtml.h>
-#include <dib.h>
-#include <txdib.h>
-#include "../../libs/litehtml/containers/cairo/container_cairo.h"
-
-class windows_container :	public container_cairo
-{
-protected:
-	cairo_surface_t*			m_temp_surface;
-	cairo_t*					m_temp_cr;
-	IMLangFontLink2*			m_font_link;
-public:
-	windows_container(void);
-	virtual ~windows_container(void);
-
-	litehtml::uint_ptr			create_font(const char* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm) override;
-	void						delete_font(litehtml::uint_ptr hFont) override;
-	int							text_width(const char* text, litehtml::uint_ptr hFont) override;
-	void						draw_text(litehtml::uint_ptr hdc, const char* text, litehtml::uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos) override;
-    litehtml::string			resolve_color(const litehtml::string& color) const override;
-
-	cairo_surface_t* get_image(const std::string& url)  override;
-	double get_screen_dpi() const override;
-	int get_screen_width() const override;
-	int get_screen_height() const override;
-};
diff --git a/libs/litehtml/containers/windows/gdiplus/gdiplus_container.cpp b/libs/litehtml/containers/windows/gdiplus/gdiplus_container.cpp
deleted file mode 100644
index faf38d0869..0000000000
--- a/libs/litehtml/containers/windows/gdiplus/gdiplus_container.cpp
+++ /dev/null
@@ -1,249 +0,0 @@
-#ifndef NOMINMAX
-#define NOMINMAX
-#endif
-#include <windows.h>
-#include <gdiplus.h>
-#include "gdiplus_container.h"
-#pragma comment(lib, "gdiplus.lib")
-using namespace Gdiplus;
-using namespace litehtml;
-
-gdiplus_container::gdiplus_container()
-{
-	GdiplusStartupInput gdiplusStartupInput;
-	GdiplusStartup(&m_gdiplusToken, &gdiplusStartupInput, NULL);
-}
-
-gdiplus_container::~gdiplus_container()
-{
-	clear_images();
-	GdiplusShutdown(m_gdiplusToken);
-}
-
-static Color gdiplus_color(web_color color)
-{
-	return Color(color.alpha, color.red, color.green, color.blue);
-}
-
-void gdiplus_container::draw_ellipse(HDC hdc, int x, int y, int width, int height, web_color color, int)
-{
-	Graphics graphics(hdc);
-
-	graphics.SetCompositingQuality(CompositingQualityHighQuality);
-	graphics.SetSmoothingMode(SmoothingModeAntiAlias);
-
-	Pen pen(gdiplus_color(color));
-	graphics.DrawEllipse(&pen, x, y, width, height);
-}
-
-void gdiplus_container::fill_ellipse(HDC hdc, int x, int y, int width, int height, web_color color)
-{
-	Graphics graphics(hdc);
-
-	graphics.SetCompositingQuality(CompositingQualityHighQuality);
-	graphics.SetSmoothingMode(SmoothingModeAntiAlias);
-
-	SolidBrush brush(gdiplus_color(color));
-	graphics.FillEllipse(&brush, x, y, width, height);
-}
-
-void gdiplus_container::fill_rect(HDC hdc, int x, int y, int width, int height, web_color color)
-{
-	Graphics graphics(hdc);
-
-	SolidBrush brush(gdiplus_color(color));
-	graphics.FillRectangle(&brush, x, y, width, height);
-}
-
-void gdiplus_container::get_img_size(uint_ptr img, size& sz)
-{
-	Bitmap* bmp = (Bitmap*)img;
-	if (bmp)
-	{
-		sz.width  = bmp->GetWidth();
-		sz.height = bmp->GetHeight();
-	}
-}
-
-void gdiplus_container::free_image(uint_ptr img)
-{
-	Bitmap* bmp = (Bitmap*)img;
-	delete bmp;
-}
-
-void gdiplus_container::draw_image(litehtml::uint_ptr _hdc, const litehtml::background_layer &bg, const std::string &src, const std::string &base_url)
-{
-	if (src.empty() || (!bg.clip_box.width && !bg.clip_box.height))
-		return;
-
-	std::wstring url;
-	make_url_utf8(src.c_str(), base_url.c_str(), url);
-
-	Bitmap* bgbmp = (Bitmap*)find_image(url.c_str());
-	if (!bgbmp)
-		return;
-
-	Graphics graphics((HDC)_hdc);
-	graphics.SetInterpolationMode(Gdiplus::InterpolationModeNearestNeighbor);
-	graphics.SetPixelOffsetMode(Gdiplus::PixelOffsetModeHalf);
-
-	Region reg(Rect(bg.border_box.left(), bg.border_box.top(), bg.border_box.width, bg.border_box.height));
-	graphics.SetClip(&reg);
-
-	Bitmap* scaled_img = nullptr;
-	if (bg.origin_box.width != bgbmp->GetWidth() || bg.origin_box.height != bgbmp->GetHeight())
-	{
-		scaled_img = new Bitmap(bg.origin_box.width, bg.origin_box.height);
-		Graphics gr(scaled_img);
-		gr.SetPixelOffsetMode(Gdiplus::PixelOffsetModeHighQuality);
-		gr.DrawImage(bgbmp, 0, 0, bg.origin_box.width, bg.origin_box.height);
-		bgbmp = scaled_img;
-	}
-
-	switch (bg.repeat)
-	{
-	case background_repeat_no_repeat:
-		{
-			graphics.DrawImage(bgbmp, bg.origin_box.x, bg.origin_box.y, bgbmp->GetWidth(), bgbmp->GetHeight());
-		}
-		break;
-	case background_repeat_repeat_x:
-		{
-			CachedBitmap bmp(bgbmp, &graphics);
-			int x = bg.origin_box.x;
-			while(x > bg.clip_box.left()) x -= bgbmp->GetWidth();
-			for(; x < bg.clip_box.right(); x += bgbmp->GetWidth())
-			{
-				graphics.DrawCachedBitmap(&bmp, x, bg.origin_box.y);
-			}
-		}
-		break;
-	case background_repeat_repeat_y:
-		{
-			CachedBitmap bmp(bgbmp, &graphics);
-			int y = bg.origin_box.y;
-			while(y > bg.clip_box.top()) y -= bgbmp->GetHeight();
-			for(; y < bg.clip_box.bottom(); y += bgbmp->GetHeight())
-			{
-				graphics.DrawCachedBitmap(&bmp, bg.origin_box.x, y);
-			}
-		}
-		break;
-	case background_repeat_repeat:
-		{
-			CachedBitmap bmp(bgbmp, &graphics);
-			int x = bg.origin_box.x;
-			while(x > bg.clip_box.left()) x -= bgbmp->GetWidth();
-			int y0 = bg.origin_box.y;
-			while(y0 > bg.clip_box.top()) y0 -= bgbmp->GetHeight();
-
-			for(; x < bg.clip_box.right(); x += bgbmp->GetWidth())
-			{
-				for(int y = y0; y < bg.clip_box.bottom(); y += bgbmp->GetHeight())
-				{
-					graphics.DrawCachedBitmap(&bmp, x, y);
-				}
-			}
-		}
-		break;
-	}
-
-	delete scaled_img;
-}
-
-// length of dash and space for "dashed" style, in multiples of pen width
-const float dash = 3;
-const float space = 2;
-
-static void draw_horz_border(Graphics& graphics, const border& border, int y, int left, int right)
-{
-	if (border.style != border_style_double || border.width < 3)
-	{
-		if (border.width == 1) right--; // 1px-wide lines are longer by one pixel in GDI+ (the endpoint is also drawn)
-		Pen pen(gdiplus_color(border.color), (float)border.width);
-		if (border.style == border_style_dotted)
-		{
-			float dashValues[2] = { 1, 1 };
-			pen.SetDashPattern(dashValues, 2);
-		}
-		else if (border.style == border_style_dashed)
-		{
-			float dashValues[2] = { dash, space };
-			pen.SetDashPattern(dashValues, 2);
-		}
-		graphics.DrawLine(&pen,
-			Point(left,  y + border.width / 2),
-			Point(right, y + border.width / 2));
-	}
-	else
-	{
-		int single_line_width = (int)round(border.width / 3.);
-		if (single_line_width == 1) right--;
-		Pen pen(gdiplus_color(border.color), (float)single_line_width);
-		graphics.DrawLine(&pen,
-			Point(left,  y + single_line_width / 2),
-			Point(right, y + single_line_width / 2));
-		graphics.DrawLine(&pen,
-			Point(left,  y + border.width - 1 - single_line_width / 2),
-			Point(right, y + border.width - 1 - single_line_width / 2));
-	}
-}
-
-static void draw_vert_border(Graphics& graphics, const border& border, int x, int top, int bottom)
-{
-	if (border.style != border_style_double || border.width < 3)
-	{
-		if (border.width == 1) bottom--;
-		Pen pen(gdiplus_color(border.color), (float)border.width);
-		if (border.style == border_style_dotted)
-		{
-			float dashValues[2] = { 1, 1 };
-			pen.SetDashPattern(dashValues, 2);
-		}
-		else if (border.style == border_style_dashed)
-		{
-			float dashValues[2] = { dash, space };
-			pen.SetDashPattern(dashValues, 2);
-		}
-		graphics.DrawLine(&pen,
-			Point(x + border.width / 2, top),
-			Point(x + border.width / 2, bottom));
-	}
-	else
-	{
-		int single_line_width = (int)round(border.width / 3.);
-		if (single_line_width == 1) bottom--;
-		Pen pen(gdiplus_color(border.color), (float)single_line_width);
-		graphics.DrawLine(&pen,
-			Point(x + single_line_width / 2, top),
-			Point(x + single_line_width / 2, bottom));
-		graphics.DrawLine(&pen,
-			Point(x + border.width - 1 - single_line_width / 2, top),
-			Point(x + border.width - 1 - single_line_width / 2, bottom));
-	}
-}
-
-void gdiplus_container::draw_borders(uint_ptr hdc, const borders& borders, const position& draw_pos, bool)
-{
-	apply_clip((HDC) hdc);
-	Graphics graphics((HDC)hdc);
-
-	if (borders.left.width != 0)
-	{
-		draw_vert_border(graphics, borders.left, draw_pos.left(), draw_pos.top(), draw_pos.bottom());
-	}
-	if (borders.right.width != 0)
-	{
-		draw_vert_border(graphics, borders.right, draw_pos.right() - borders.right.width, draw_pos.top(), draw_pos.bottom());
-	}
-	if (borders.top.width != 0)
-	{
-		draw_horz_border(graphics, borders.top, draw_pos.top(), draw_pos.left(), draw_pos.right());
-	}
-	if (borders.bottom.width != 0)
-	{
-		draw_horz_border(graphics, borders.bottom, draw_pos.bottom() - borders.bottom.width, draw_pos.left(), draw_pos.right());
-	}
-
-	release_clip((HDC) hdc);
-}
diff --git a/libs/litehtml/containers/windows/gdiplus/gdiplus_container.h b/libs/litehtml/containers/windows/gdiplus/gdiplus_container.h
deleted file mode 100644
index 008bd7956d..0000000000
--- a/libs/litehtml/containers/windows/gdiplus/gdiplus_container.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#pragma once
-#include "..\win32\win32_container.h"
-
-class gdiplus_container : public win32_container
-{
-public:
-	gdiplus_container();
-	virtual ~gdiplus_container();
-
-private:
-	ULONG_PTR m_gdiplusToken;
-
-protected:
-	// win32_container members
-	void	draw_ellipse(HDC hdc, int x, int y, int width, int height, litehtml::web_color color, int line_width) override;
-	void	fill_ellipse(HDC hdc, int x, int y, int width, int height, litehtml::web_color color) override;
-	void	fill_rect(HDC hdc, int x, int y, int width, int height, litehtml::web_color color) override;
-	void	draw_image(litehtml::uint_ptr, const litehtml::background_layer &, const std::string &, const std::string &) override;
-	void	get_img_size(uint_ptr img, litehtml::size& sz) override;
-	void	free_image(uint_ptr img) override;
-
-	// litehtml::document_container members
-	void	draw_borders(uint_ptr hdc, const litehtml::borders& borders, const litehtml::position& draw_pos, bool root) override;
-};
diff --git a/libs/litehtml/containers/windows/win32/win32_container.cpp b/libs/litehtml/containers/windows/win32/win32_container.cpp
deleted file mode 100644
index 117db3748b..0000000000
--- a/libs/litehtml/containers/windows/win32/win32_container.cpp
+++ /dev/null
@@ -1,436 +0,0 @@
-#include "win32_container.h"
-#include <newpluginapi.h>
-
-win32_container::win32_container()
-{
-	m_hClipRgn = NULL;
-	m_tmp_hdc = GetDC(NULL);
-	InitializeCriticalSection(&m_img_sync);
-
-	EnumFonts(m_tmp_hdc, NULL, EnumFontsProc, (LPARAM)this);
-	m_installed_fonts.insert(L"monospace");
-	m_installed_fonts.insert(L"serif");
-	m_installed_fonts.insert(L"sans-serif");
-	m_installed_fonts.insert(L"fantasy");
-	m_installed_fonts.insert(L"cursive");
-}
-
-win32_container::~win32_container()
-{
-	DeleteCriticalSection(&m_img_sync);
-	if(m_hClipRgn)
-	{
-		DeleteObject(m_hClipRgn);
-	}
-	ReleaseDC(NULL, m_tmp_hdc);
-}
-
-int CALLBACK win32_container::EnumFontsProc(const LOGFONT* lplf, const TEXTMETRIC*, DWORD, LPARAM lpData)
-{
-	win32_container* container = (win32_container*)lpData;
-	container->m_installed_fonts.insert(lplf->lfFaceName);
-	return 1;
-}
-
-static LPCWSTR get_exact_font_name(LPCWSTR facename)
-{
-	if      (!lstrcmpi(facename, L"monospace"))		return L"Courier New";
-	else if (!lstrcmpi(facename, L"serif"))			return L"Times New Roman";
-	else if (!lstrcmpi(facename, L"sans-serif"))	return L"Arial";
-	else if (!lstrcmpi(facename, L"fantasy"))		return L"Impact";
-	else if (!lstrcmpi(facename, L"cursive"))		return L"Comic Sans MS";
-	else											return facename;
-}
-
-static void trim_quotes(litehtml::string& str)
-{
-	if (str.front() == '"' || str.front() == '\'')
-		str.erase(0, 1);
-
-	if (str.back() == '"' || str.back() == '\'')
-		str.erase(str.length() - 1, 1);
-}
-
-litehtml::uint_ptr win32_container::create_font( const char* font_list, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm )
-{
-	std::wstring font_name;
-	litehtml::string_vector fonts;
-	litehtml::split_string(font_list, fonts, ",");
-	bool found = false;
-	for (auto& name : fonts)
-	{
-		litehtml::trim(name);
-		trim_quotes(name);
-		Utf2T wname(name.c_str());
-		if (m_installed_fonts.count(wname.get()))
-		{
-			font_name = wname;
-			found = true;
-			break;
-		}
-	}
-	if (!found) font_name = Utf2T(get_default_font_name());
-	font_name = get_exact_font_name(font_name.c_str());
-
-	LOGFONT lf = {};
-	wcscpy_s(lf.lfFaceName, LF_FACESIZE, font_name.c_str());
-
-	lf.lfHeight			= -size;
-	lf.lfWeight			= weight;
-	lf.lfItalic			= (italic == litehtml::font_style_italic) ? TRUE : FALSE;
-	lf.lfCharSet		= DEFAULT_CHARSET;
-	lf.lfOutPrecision	= OUT_DEFAULT_PRECIS;
-	lf.lfClipPrecision	= CLIP_DEFAULT_PRECIS;
-	lf.lfQuality		= DEFAULT_QUALITY;
-	lf.lfStrikeOut		= (decoration & litehtml::font_decoration_linethrough) ? TRUE : FALSE;
-	lf.lfUnderline		= (decoration & litehtml::font_decoration_underline) ? TRUE : FALSE;
-	HFONT hFont = CreateFontIndirect(&lf);
-
-	if (fm)
-	{
-		SelectObject(m_tmp_hdc, hFont);
-		TEXTMETRIC tm = {};
-		GetTextMetrics(m_tmp_hdc, &tm);
-		fm->ascent = tm.tmAscent;
-		fm->descent = tm.tmDescent;
-		fm->height = tm.tmHeight;
-		fm->x_height = tm.tmHeight / 2;   // this is an estimate; call GetGlyphOutline to get the real value
-		fm->draw_spaces = italic || decoration;
-	}
-
-	return (uint_ptr) hFont;
-}
-
-void win32_container::delete_font( uint_ptr hFont )
-{
-	DeleteObject((HFONT) hFont);
-}
-
-const char* win32_container::get_default_font_name() const
-{
-	return "Times New Roman";
-}
-
-int win32_container::get_default_font_size() const
-{
-	return 16;
-}
-
-int win32_container::text_width( const char* text, uint_ptr hFont )
-{
-	SIZE size = {};
-	SelectObject(m_tmp_hdc, (HFONT)hFont);
-	Utf2T wtext(text);
-	GetTextExtentPoint32(m_tmp_hdc, wtext, (int)mir_wstrlen(wtext), &size);
-	return size.cx;
-}
-
-void win32_container::draw_text( uint_ptr hdc, const char* text, uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos )
-{
-	apply_clip((HDC) hdc);
-
-	HFONT oldFont = (HFONT) SelectObject((HDC) hdc, (HFONT) hFont);
-
-	SetBkMode((HDC) hdc, TRANSPARENT);
-
-	SetTextColor((HDC) hdc, RGB(color.red, color.green, color.blue));
-
-	RECT rcText = { pos.left(), pos.top(), pos.right(), pos.bottom() };
-	DrawText((HDC) hdc, Utf2T(text), -1, &rcText, DT_SINGLELINE | DT_NOPREFIX | DT_BOTTOM | DT_NOCLIP);
-
-	SelectObject((HDC) hdc, oldFont);
-
-	release_clip((HDC) hdc);
-}
-
-int win32_container::pt_to_px( int pt ) const
-{
-	return MulDiv(pt, GetDeviceCaps(m_tmp_hdc, LOGPIXELSY), 72);
-}
-
-void win32_container::draw_solid_fill(litehtml::uint_ptr _hdc, const litehtml::background_layer &bg, const litehtml::web_color &color)
-{
-	HDC hdc = (HDC)_hdc;
-	apply_clip(hdc);
-
-	fill_rect(hdc, bg.border_box.x, bg.border_box.y, bg.border_box.width, bg.border_box.height, color);
-
-	release_clip(hdc);
-}
-
-void win32_container::draw_linear_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::linear_gradient &)
-{
-}
-
-void win32_container::draw_radial_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::radial_gradient &)
-{
-}
-
-void win32_container::draw_conic_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::conic_gradient &)
-{
-}
-
-void win32_container::draw_list_marker(uint_ptr hdc, const litehtml::list_marker& marker)
-{
-	apply_clip((HDC)hdc);
-
-	int top_margin = marker.pos.height / 3;
-	if (top_margin < 4)
-		top_margin = 0;
-
-	int draw_x = marker.pos.x;
-	int draw_y = marker.pos.y + top_margin;
-	int draw_width = marker.pos.height - top_margin * 2;
-	int draw_height = marker.pos.height - top_margin * 2;
-
-	switch (marker.marker_type)
-	{
-	case litehtml::list_style_type_circle:
-		{
-			draw_ellipse((HDC)hdc, draw_x, draw_y, draw_width, draw_height, marker.color, 1);
-		}
-		break;
-	case litehtml::list_style_type_disc:
-		{
-			fill_ellipse((HDC)hdc, draw_x, draw_y, draw_width, draw_height, marker.color);
-		}
-		break;
-	case litehtml::list_style_type_square:
-		{
-			fill_rect((HDC)hdc, draw_x, draw_y, draw_width, draw_height, marker.color);
-		}
-		break;
-	}
-	release_clip((HDC)hdc);
-}
-
-void win32_container::make_url_utf8(const char* url, const char* basepath, std::wstring& out)
-{
-	make_url(Utf2T(url), Utf2T(basepath), out);
-}
-
-litehtml::uint_ptr win32_container::find_image(const std::wstring &url)
-{
-	uint_ptr ret = 0;
-
-	lock_images_cache();
-	images_map::iterator img = m_images.find(url);
-	if (img != m_images.end() && img->second)
-		ret = img->second;
-
-	unlock_images_cache();
-	return ret;
-}
-
-void win32_container::load_image( const char* src, const char* baseurl, bool redraw_on_ready )
-{
-	std::wstring url;
-	make_url_utf8(src, baseurl, url);
-	
-	lock_images_cache();
-	if (m_images.count(url) == 0)
-	{
-		unlock_images_cache();
-		uint_ptr img = get_image(url.c_str(), redraw_on_ready);
-		add_image(url.c_str(), img);
-	}
-	else
-	{
-		unlock_images_cache();
-	}
-}
-
-void win32_container::add_image(LPCWSTR url, uint_ptr img)
-{
-	lock_images_cache();
-	m_images[url] = img;
-	unlock_images_cache();
-}
-
-void win32_container::get_image_size( const char* src, const char* baseurl, litehtml::size& sz )
-{
-	std::wstring url;
-	make_url_utf8(src, baseurl, url);
-
-	sz.width  = 0;
-	sz.height = 0;
-
-	lock_images_cache();
-	images_map::iterator img = m_images.find(url);
-	if(img != m_images.end() && img->second)
-	{
-		get_img_size(img->second, sz);
-	}
-	unlock_images_cache();
-}
-
-void win32_container::clear_images()
-{
-	lock_images_cache();
-	for(auto& img : m_images)
-	{
-		if(img.second)
-		{
-			free_image(img.second);
-		}
-	}
-	m_images.clear();
-	unlock_images_cache();
-}
-
-void win32_container::lock_images_cache()
-{
-	EnterCriticalSection(&m_img_sync);
-}
-
-void win32_container::unlock_images_cache()
-{
-	LeaveCriticalSection(&m_img_sync);
-}
-
-void win32_container::set_clip( const litehtml::position& pos, const litehtml::border_radiuses&)
-{
-	m_clips.push_back(pos);
-}
-
-void win32_container::del_clip()
-{
-	if(!m_clips.empty())
-	{
-		m_clips.pop_back();
-	}
-}
-
-void win32_container::apply_clip(HDC hdc)
-{
-	if(m_hClipRgn)
-	{
-		DeleteObject(m_hClipRgn);
-		m_hClipRgn = NULL;
-	}
-
-	if(!m_clips.empty())
-	{
-		POINT ptView = {0, 0};
-		GetWindowOrgEx(hdc, &ptView);
-
-		litehtml::position clip_pos = m_clips.back();
-		m_hClipRgn = CreateRectRgn(clip_pos.left() - ptView.x, clip_pos.top() - ptView.y, clip_pos.right() - ptView.x, clip_pos.bottom() - ptView.y);
-		SelectClipRgn(hdc, m_hClipRgn);
-	}
-}
-
-void win32_container::release_clip(HDC hdc)
-{
-	SelectClipRgn(hdc, NULL);
-
-	if(m_hClipRgn)
-	{
-		DeleteObject(m_hClipRgn);
-		m_hClipRgn = NULL;
-	}
-}
-
-litehtml::element::ptr win32_container::create_element(const char*, const litehtml::string_map&, const litehtml::document::ptr&)
-{
-	return 0;
-}
-
-void win32_container::get_media_features(litehtml::media_features& media)  const
-{
-	litehtml::position client;
-	get_client_rect(client);
-
-	media.type = litehtml::media_type_screen;
-	media.width = client.width;
-	media.height = client.height;
-	media.color = 8;
-	media.monochrome = 0;
-	media.color_index = 256;
-	media.resolution = GetDeviceCaps(m_tmp_hdc, LOGPIXELSX);
-	media.device_width = GetDeviceCaps(m_tmp_hdc, HORZRES);
-	media.device_height = GetDeviceCaps(m_tmp_hdc, VERTRES);
-}
-
-void win32_container::get_language(litehtml::string& language, litehtml::string& culture) const
-{
-	language = "en";
-	culture = "";
-}
-
-void win32_container::transform_text(litehtml::string& text, litehtml::text_transform tt)
-{
-	if (text.empty()) return;
-
-	LPWSTR txt = _wcsdup(Utf2T(text.c_str()));
-	switch (tt)
-	{
-	case litehtml::text_transform_capitalize:
-		CharUpperBuff(txt, 1);
-		break;
-	case litehtml::text_transform_uppercase:
-		CharUpperBuff(txt, lstrlen(txt));
-		break;
-	case litehtml::text_transform_lowercase:
-		CharLowerBuff(txt, lstrlen(txt));
-		break;
-	}
-	text = T2Utf(txt);
-	free(txt);
-}
-
-void win32_container::link(const litehtml::document::ptr&, const litehtml::element::ptr&)
-{
-}
-
-litehtml::string win32_container::resolve_color(const litehtml::string& color) const
-{
-	struct custom_color
-	{
-		const char*	name;
-		int					color_index;
-	};
-
-	static custom_color colors[] = {
-		{ "ActiveBorder",          COLOR_ACTIVEBORDER },
-		{ "ActiveCaption",         COLOR_ACTIVECAPTION },
-		{ "AppWorkspace",          COLOR_APPWORKSPACE },
-		{ "Background",            COLOR_BACKGROUND },
-		{ "ButtonFace",            COLOR_BTNFACE },
-		{ "ButtonHighlight",       COLOR_BTNHIGHLIGHT },
-		{ "ButtonShadow",          COLOR_BTNSHADOW },
-		{ "ButtonText",            COLOR_BTNTEXT },
-		{ "CaptionText",           COLOR_CAPTIONTEXT },
-		{ "GrayText",              COLOR_GRAYTEXT },
-		{ "Highlight",             COLOR_HIGHLIGHT },
-		{ "HighlightText",         COLOR_HIGHLIGHTTEXT },
-		{ "InactiveBorder",        COLOR_INACTIVEBORDER },
-		{ "InactiveCaption",       COLOR_INACTIVECAPTION },
-		{ "InactiveCaptionText",   COLOR_INACTIVECAPTIONTEXT },
-		{ "InfoBackground",        COLOR_INFOBK },
-		{ "InfoText",              COLOR_INFOTEXT },
-		{ "Menu",                  COLOR_MENU },
-		{ "MenuText",              COLOR_MENUTEXT },
-		{ "Scrollbar",             COLOR_SCROLLBAR },
-		{ "ThreeDDarkShadow",      COLOR_3DDKSHADOW },
-		{ "ThreeDFace",            COLOR_3DFACE },
-		{ "ThreeDHighlight",       COLOR_3DHILIGHT },
-		{ "ThreeDLightShadow",     COLOR_3DLIGHT },
-		{ "ThreeDShadow",          COLOR_3DSHADOW },
-		{ "Window",                COLOR_WINDOW },
-		{ "WindowFrame",           COLOR_WINDOWFRAME },
-		{ "WindowText",            COLOR_WINDOWTEXT }
-	};
-
-	for (auto& clr : colors)
-	{
-		if (!litehtml::t_strcasecmp(color.c_str(), clr.name))
-		{
-			char  str_clr[20];
-			DWORD rgb_color = GetSysColor(clr.color_index);
-			t_snprintf(str_clr, 20, "#%02X%02X%02X", GetRValue(rgb_color), GetGValue(rgb_color), GetBValue(rgb_color));
-			return std::move(litehtml::string(str_clr));
-		}
-	}
-	return std::move(litehtml::string());
-}
diff --git a/libs/litehtml/containers/windows/win32/win32_container.h b/libs/litehtml/containers/windows/win32/win32_container.h
deleted file mode 100644
index f5239d572d..0000000000
--- a/libs/litehtml/containers/windows/win32/win32_container.h
+++ /dev/null
@@ -1,79 +0,0 @@
-#pragma once
-#ifndef NOMINMAX
-#define NOMINMAX
-#endif
-#include <windows.h>
-#include <set>
-#include <litehtml.h>
-
-class win32_container : public litehtml::document_container
-{
-public:
-	typedef litehtml::uint_ptr uint_ptr;
-	typedef std::map<std::wstring, uint_ptr>	images_map;
-	
-protected:
-	images_map					m_images;
-	litehtml::position::vector	m_clips;
-	HRGN						m_hClipRgn;
-	std::set<std::wstring>		m_installed_fonts;
-	HDC							m_tmp_hdc;
-	CRITICAL_SECTION			m_img_sync;
-
-public:
-	win32_container();
-	virtual ~win32_container();
-
-	// litehtml::document_container members
-	uint_ptr	create_font(const char* faceName, int size, int weight, litehtml::font_style italic, unsigned int decoration, litehtml::font_metrics* fm) override;
-	void		delete_font(uint_ptr hFont) override;
-	const char* get_default_font_name() const override;
-	int			get_default_font_size() const override;
-	int			text_width(const char* text, uint_ptr hFont) override;
-	void		draw_text(uint_ptr hdc, const char* text, uint_ptr hFont, litehtml::web_color color, const litehtml::position& pos) override;
-	void		transform_text(litehtml::string& text, litehtml::text_transform tt) override;
-
-	void draw_solid_fill(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::web_color &) override;
-	void draw_linear_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::linear_gradient &) override;
-	void draw_radial_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::radial_gradient &) override;
-	void draw_conic_gradient(litehtml::uint_ptr, const litehtml::background_layer &, const litehtml::background_layer::conic_gradient &) override;
-
-	int			pt_to_px(int pt) const override;
-	void		draw_list_marker(uint_ptr hdc, const litehtml::list_marker& marker) override;
-	void		load_image(const char* src, const char* baseurl, bool redraw_on_ready) override;
-	void		get_image_size(const char* src, const char* baseurl, litehtml::size& sz) override;
-	uint_ptr find_image(const std::wstring &url);
-	
-	void		set_clip(const litehtml::position& pos, const litehtml::border_radiuses& bdr_radius) override;
-	void		del_clip() override;
-	litehtml::element::ptr	create_element(const char* tag_name, const litehtml::string_map& attributes, const litehtml::document::ptr& doc) override;
-	void		get_media_features(litehtml::media_features& media) const override;
-	void		get_language(litehtml::string& language, litehtml::string& culture) const override;
-	void		link(const litehtml::document::ptr& doc, const litehtml::element::ptr& el) override;
-	litehtml::string	resolve_color(const litehtml::string& color) const override;
-
-protected:
-	void				apply_clip(HDC hdc);
-	void				release_clip(HDC hdc);
-
-	virtual void		make_url(LPCWSTR url, LPCWSTR basepath, std::wstring& out) = 0;
-	void				make_url_utf8(const char* url, const char* basepath, std::wstring& out);
-	virtual void		get_client_rect(litehtml::position& client) const = 0;
-
-	// get_image is called by load_image.
-	// if url_or_path is URL then get_image may return 0, the image should be added later by add_image when it becomes available
-	virtual uint_ptr	get_image(LPCWSTR url_or_path, bool redraw_on_ready) = 0;
-	void				add_image(LPCWSTR url, uint_ptr img);
-	void				clear_images();
-	virtual void		free_image(uint_ptr img) = 0;
-	virtual void		get_img_size(uint_ptr img, litehtml::size& sz) = 0;
-
-	virtual void		draw_ellipse(HDC hdc, int x, int y, int width, int height, litehtml::web_color color, int line_width) = 0;
-	virtual void		fill_ellipse(HDC hdc, int x, int y, int width, int height, litehtml::web_color color) = 0;
-	virtual void		fill_rect(HDC hdc, int x, int y, int width, int height, litehtml::web_color color) = 0;
-
-private:
-	static int CALLBACK EnumFontsProc(const LOGFONT* lplf, const TEXTMETRIC* lptm, DWORD dwType, LPARAM lpData);
-	void				lock_images_cache();
-	void				unlock_images_cache();
-};