AdvaImg:

- freeimage extracted to the separate library;
- FI_INTERFACE removed, all references to it are replaced with direct calls of FreeImage_* functions;
- unified project for AdvaImg

1 files changed, 196 insertions, 0 deletions

diff --git a/libs/freeimage/src/FreeImageToolkit/Resize.h b/libs/freeimage/src/FreeImageToolkit/Resize.h
new file mode 100644
index 0000000000..466fcc183d
--- /dev/null
+++ b/libs/freeimage/src/FreeImageToolkit/Resize.h
@@ -0,0 +1,196 @@
+// ==========================================================
+// Upsampling / downsampling classes
+//
+// Design and implementation by
+// - Hervé Drolon (drolon@infonie.fr)
+// - Detlev Vendt (detlev.vendt@brillit.de)
+// - Carsten Klein (cklein05@users.sourceforge.net)
+//
+// This file is part of FreeImage 3
+//
+// COVERED CODE IS PROVIDED UNDER THIS LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTY
+// OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
+// THAT THE COVERED CODE IS FREE OF DEFECTS, MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE
+// OR NON-INFRINGING. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE COVERED
+// CODE IS WITH YOU. SHOULD ANY COVERED CODE PROVE DEFECTIVE IN ANY RESPECT, YOU (NOT
+// THE INITIAL DEVELOPER OR ANY OTHER CONTRIBUTOR) ASSUME THE COST OF ANY NECESSARY
+// SERVICING, REPAIR OR CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL
+// PART OF THIS LICENSE. NO USE OF ANY COVERED CODE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+// THIS DISCLAIMER.
+//
+// Use at your own risk!
+// ==========================================================
+
+#ifndef _RESIZE_H_
+#define _RESIZE_H_
+
+#include "FreeImage.h"
+#include "Utilities.h"
+#include "Filters.h" 
+
+/**
+  Filter weights table.<br>
+  This class stores contribution information for an entire line (row or column).
+*/
+class CWeightsTable
+{
+/**
+  Sampled filter weight table.<br>
+  Contribution information for a single pixel
+*/
+typedef struct {
+	/// Normalized weights of neighboring pixels
+	double *Weights;
+	/// Bounds of source pixels window
+	unsigned Left, Right;
+} Contribution;
+
+private:
+	/// Row (or column) of contribution weights 
+	Contribution *m_WeightTable;
+	/// Filter window size (of affecting source pixels) 
+	unsigned m_WindowSize;
+	/// Length of line (no. of rows / cols) 
+	unsigned m_LineLength;
+
+public:
+	/** 
+	Constructor<br>
+	Allocate and compute the weights table
+	@param pFilter Filter used for upsampling or downsampling
+	@param uDstSize Length (in pixels) of the destination line buffer
+	@param uSrcSize Length (in pixels) of the source line buffer
+	*/
+	CWeightsTable(CGenericFilter *pFilter, unsigned uDstSize, unsigned uSrcSize);
+
+	/**
+	Destructor<br>
+	Destroy the weights table
+	*/
+	~CWeightsTable();
+
+	/** Retrieve a filter weight, given source and destination positions
+	@param dst_pos Pixel position in destination line buffer
+	@param src_pos Pixel position in source line buffer
+	@return Returns the filter weight
+	*/
+	double getWeight(unsigned dst_pos, unsigned src_pos) {
+		return m_WeightTable[dst_pos].Weights[src_pos];
+	}
+
+	/** Retrieve left boundary of source line buffer
+	@param dst_pos Pixel position in destination line buffer
+	@return Returns the left boundary of source line buffer
+	*/
+	unsigned getLeftBoundary(unsigned dst_pos) {
+		return m_WeightTable[dst_pos].Left;
+	}
+
+	/** Retrieve right boundary of source line buffer
+	@param dst_pos Pixel position in destination line buffer
+	@return Returns the right boundary of source line buffer
+	*/
+	unsigned getRightBoundary(unsigned dst_pos) {
+		return m_WeightTable[dst_pos].Right;
+	}
+};
+
+// ---------------------------------------------
+
+/**
+ CResizeEngine<br>
+ This class performs filtered zoom. It scales an image to the desired dimensions with 
+ any of the CGenericFilter derived filter class.<br>
+ It works with FIT_BITMAP buffers, WORD buffers (FIT_UINT16, FIT_RGB16, FIT_RGBA16) 
+ and float buffers (FIT_FLOAT, FIT_RGBF, FIT_RGBAF).<br><br>
+
+ <b>References</b> : <br>
+ [1] Paul Heckbert, C code to zoom raster images up or down, with nice filtering. 
+ UC Berkeley, August 1989. [online] http://www-2.cs.cmu.edu/afs/cs.cmu.edu/Web/People/ph/heckbert.html
+ [2] Eran Yariv, Two Pass Scaling using Filters. The Code Project, December 1999. 
+ [online] http://www.codeproject.com/bitmap/2_pass_scaling.asp
+
+*/
+class CResizeEngine
+{
+private:
+	/// Pointer to the FIR / IIR filter
+	CGenericFilter* m_pFilter;
+
+public:
+
+	/**
+	Constructor
+	@param filter FIR /IIR filter to be used
+	*/
+	CResizeEngine(CGenericFilter* filter):m_pFilter(filter) {}
+
+	/// Destructor
+	virtual ~CResizeEngine() {}
+
+	/** Scale an image to the desired dimensions.
+
+	Method CResizeEngine::scale, as well as the two filtering methods
+	CResizeEngine::horizontalFilter and CResizeEngine::verticalFilter take
+	four additional parameters, that define a rectangle in the source
+	image to be rescaled.
+
+	These are src_left, src_top, src_width and src_height and should work
+	like these of function FreeImage_Copy. However, src_left and src_top are
+	actually named src_offset_x and src_offset_y in the filtering methods.
+
+	Additionally, since src_height and dst_height are always the same for
+	method horizontalFilter as src_width and dst_width are always the same
+	for verticalFilter, these have been stripped down to a single parameter
+	height and width for horizontalFilter and verticalFilter respectively.
+
+	Currently, method scale is called with the actual size of the source
+	image. However, in a future version, we could provide a new function
+	called FreeImage_RescaleRect that rescales only part of an image. 
+
+	@param src Pointer to the source image
+	@param dst_width Destination image width
+	@param dst_height Destination image height
+	@param src_left Left boundary of the source rectangle to be scaled
+	@param src_top Top boundary of the source rectangle to be scaled
+	@param src_width Width of the source rectangle to be scaled
+	@param src_height Height of the source rectangle to be scaled
+	@return Returns the scaled image if successful, returns NULL otherwise
+	*/
+	FIBITMAP* scale(FIBITMAP *src, unsigned dst_width, unsigned dst_height, unsigned src_left, unsigned src_top, unsigned src_width, unsigned src_height, unsigned flags);
+
+private:
+
+	/**
+	Performs horizontal image filtering
+
+	@param src Source image
+	@param height Source / Destination image height
+	@param src_width Source image width
+	@param src_offset_x
+	@param src_offset_y
+	@param src_pal
+	@param dst Destination image
+	@param dst_width Destination image width
+	*/
+	void horizontalFilter(FIBITMAP * const src, const unsigned height, const unsigned src_width,
+			const unsigned src_offset_x, const unsigned src_offset_y, const RGBQUAD * const src_pal,
+			FIBITMAP * const dst, const unsigned dst_width);
+
+	/**
+	Performs vertical image filtering
+	@param src Source image
+	@param width Source / Destination image width
+	@param src_height Source image height
+	@param src_offset_x
+	@param src_offset_y
+	@param src_pal
+	@param dst Destination image
+	@param dst_height Destination image height
+	*/
+	void verticalFilter(FIBITMAP * const src, const unsigned width, const unsigned src_height,
+			const unsigned src_offset_x, const unsigned src_offset_y, const RGBQUAD * const src_pal,
+			FIBITMAP * const dst, const unsigned dst_height);
+};
+
+#endif //   _RESIZE_H_