diff options
Diffstat (limited to 'plugins/AdvaImg/src/FreeImage/Conversion8.cpp')
| -rw-r--r-- | plugins/AdvaImg/src/FreeImage/Conversion8.cpp | 610 |
1 files changed, 305 insertions, 305 deletions
diff --git a/plugins/AdvaImg/src/FreeImage/Conversion8.cpp b/plugins/AdvaImg/src/FreeImage/Conversion8.cpp index 1c331a6552..c4f9b22441 100644 --- a/plugins/AdvaImg/src/FreeImage/Conversion8.cpp +++ b/plugins/AdvaImg/src/FreeImage/Conversion8.cpp @@ -1,305 +1,305 @@ -// ==========================================================
-// Bitmap conversion routines
-//
-// Design and implementation by
-// - Floris van den Berg (flvdberg@wxs.nl)
-// - Hervé Drolon (drolon@infonie.fr)
-// - Jani Kajala (janik@remedy.fi)
-// - Karl-Heinz Bussian (khbussian@moss.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!
-// ==========================================================
-
-#include "FreeImage.h"
-#include "Utilities.h"
-
-// ----------------------------------------------------------
-// internal conversions X to 8 bits
-// ----------------------------------------------------------
-
-void DLL_CALLCONV
-FreeImage_ConvertLine1To8(BYTE *target, BYTE *source, int width_in_pixels) {
- for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++)
- target[cols] = (source[cols >> 3] & (0x80 >> (cols & 0x07))) != 0 ? 255 : 0;
-}
-
-void DLL_CALLCONV
-FreeImage_ConvertLine4To8(BYTE *target, BYTE *source, int width_in_pixels) {
- unsigned count_new = 0;
- unsigned count_org = 0;
- BOOL hinibble = TRUE;
-
- while (count_new < (unsigned)width_in_pixels) {
- if (hinibble) {
- target[count_new] = (source[count_org] >> 4);
- } else {
- target[count_new] = (source[count_org] & 0x0F);
- count_org++;
- }
- hinibble = !hinibble;
- count_new++;
- }
-}
-
-void DLL_CALLCONV
-FreeImage_ConvertLine16To8_555(BYTE *target, BYTE *source, int width_in_pixels) {
- const WORD *const bits = (WORD *)source;
- for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) {
- target[cols] = GREY((((bits[cols] & FI16_555_RED_MASK) >> FI16_555_RED_SHIFT) * 0xFF) / 0x1F,
- (((bits[cols] & FI16_555_GREEN_MASK) >> FI16_555_GREEN_SHIFT) * 0xFF) / 0x1F,
- (((bits[cols] & FI16_555_BLUE_MASK) >> FI16_555_BLUE_SHIFT) * 0xFF) / 0x1F);
- }
-}
-
-void DLL_CALLCONV
-FreeImage_ConvertLine16To8_565(BYTE *target, BYTE *source, int width_in_pixels) {
- const WORD *const bits = (WORD *)source;
- for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) {
- target[cols] = GREY((((bits[cols] & FI16_565_RED_MASK) >> FI16_565_RED_SHIFT) * 0xFF) / 0x1F,
- (((bits[cols] & FI16_565_GREEN_MASK) >> FI16_565_GREEN_SHIFT) * 0xFF) / 0x3F,
- (((bits[cols] & FI16_565_BLUE_MASK) >> FI16_565_BLUE_SHIFT) * 0xFF) / 0x1F);
- }
-}
-
-void DLL_CALLCONV
-FreeImage_ConvertLine24To8(BYTE *target, BYTE *source, int width_in_pixels) {
- for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) {
- target[cols] = GREY(source[FI_RGBA_RED], source[FI_RGBA_GREEN], source[FI_RGBA_BLUE]);
- source += 3;
- }
-}
-
-void DLL_CALLCONV
-FreeImage_ConvertLine32To8(BYTE *target, BYTE *source, int width_in_pixels) {
- for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) {
- target[cols] = GREY(source[FI_RGBA_RED], source[FI_RGBA_GREEN], source[FI_RGBA_BLUE]);
- source += 4;
- }
-}
-
-// ----------------------------------------------------------
-// smart convert X to 8 bits
-// ----------------------------------------------------------
-
-FIBITMAP * DLL_CALLCONV
-FreeImage_ConvertTo8Bits(FIBITMAP *dib) {
- if (!FreeImage_HasPixels(dib)) {
- return NULL;
- }
-
- const FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib);
- if (image_type != FIT_BITMAP && image_type != FIT_UINT16) {
- return NULL;
- }
-
- const unsigned bpp = FreeImage_GetBPP(dib);
-
- if (bpp != 8) {
-
- const unsigned width = FreeImage_GetWidth(dib);
- const unsigned height = FreeImage_GetHeight(dib);
-
- // Allocate a destination image
- FIBITMAP *new_dib = FreeImage_Allocate(width, height, 8);
- if (new_dib == NULL) {
- return NULL;
- }
-
- // Copy metadata from src to dst
- FreeImage_CloneMetadata(new_dib, dib);
-
- // Palette of destination image has already been initialized
- RGBQUAD *new_pal = FreeImage_GetPalette(new_dib);
-
- const FREE_IMAGE_COLOR_TYPE color_type = FreeImage_GetColorType(dib);
-
- if (image_type == FIT_BITMAP) {
-
- switch(bpp) {
- case 1:
- {
- if (color_type == FIC_PALETTE) {
- // Copy the palette
- RGBQUAD *old_pal = FreeImage_GetPalette(dib);
- new_pal[0] = old_pal[0];
- new_pal[255] = old_pal[1];
-
- } else if (color_type == FIC_MINISWHITE) {
- // Create a reverse grayscale palette
- CREATE_GREYSCALE_PALETTE_REVERSE(new_pal, 256);
- }
-
- // Expand and copy the bitmap data
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine1To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- return new_dib;
- }
-
- case 4 :
- {
- if (color_type == FIC_PALETTE) {
- // Copy the palette
- memcpy(new_pal, FreeImage_GetPalette(dib), 16 * sizeof(RGBQUAD));
- }
-
- // Expand and copy the bitmap data
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine4To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- return new_dib;
- }
-
- case 16 :
- {
- // Expand and copy the bitmap data
- if (IS_FORMAT_RGB565(dib)) {
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine16To8_565(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- } else {
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine16To8_555(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- }
- return new_dib;
- }
-
- case 24 :
- {
- // Expand and copy the bitmap data
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine24To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- return new_dib;
- }
-
- case 32 :
- {
- // Expand and copy the bitmap data
- for (unsigned rows = 0; rows < height; rows++) {
- FreeImage_ConvertLine32To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width);
- }
- return new_dib;
- }
- }
-
- } else if (image_type == FIT_UINT16) {
-
- const unsigned src_pitch = FreeImage_GetPitch(dib);
- const unsigned dst_pitch = FreeImage_GetPitch(new_dib);
- const BYTE *src_bits = FreeImage_GetBits(dib);
- BYTE *dst_bits = FreeImage_GetBits(new_dib);
-
- for (unsigned rows = 0; rows < height; rows++) {
- const WORD *const src_pixel = (WORD*)src_bits;
- BYTE *dst_pixel = (BYTE*)dst_bits;
- for(unsigned cols = 0; cols < width; cols++) {
- dst_pixel[cols] = (BYTE)(src_pixel[cols] >> 8);
- }
- src_bits += src_pitch;
- dst_bits += dst_pitch;
- }
- return new_dib;
- }
-
- } // bpp != 8
-
- return FreeImage_Clone(dib);
-}
-
-FIBITMAP * DLL_CALLCONV
-FreeImage_ConvertToGreyscale(FIBITMAP *dib) {
- if (!FreeImage_HasPixels(dib)) {
- return NULL;
- }
-
- const FREE_IMAGE_COLOR_TYPE color_type = FreeImage_GetColorType(dib);
-
- if (color_type == FIC_PALETTE || color_type == FIC_MINISWHITE) {
-
- const unsigned bpp = FreeImage_GetBPP(dib);
- const unsigned width = FreeImage_GetWidth(dib);
- const unsigned height = FreeImage_GetHeight(dib);
-
- FIBITMAP *new_dib = FreeImage_Allocate(width, height, 8);
- if (new_dib == NULL) {
- return NULL;
- }
-
- // Copy metadata from src to dst
- FreeImage_CloneMetadata(new_dib, dib);
-
- // Create a greyscale palette
- BYTE grey_pal[256];
- const RGBQUAD *pal = FreeImage_GetPalette(dib);
- const unsigned size = CalculateUsedPaletteEntries(bpp);
- for (unsigned i = 0; i < size; i++) {
- grey_pal[i] = GREY(pal->rgbRed, pal->rgbGreen, pal->rgbBlue);
- pal++;
- }
-
- const BYTE *src_bits = FreeImage_GetBits(dib);
- BYTE *dst_bits = FreeImage_GetBits(new_dib);
-
- const unsigned src_pitch = FreeImage_GetPitch(dib);
- const unsigned dst_pitch = FreeImage_GetPitch(new_dib);
-
- switch(bpp) {
- case 1:
- {
- for (unsigned y = 0; y < height; y++) {
- for (unsigned x = 0; x < width; x++) {
- const unsigned pixel = (src_bits[x >> 3] & (0x80 >> (x & 0x07))) != 0;
- dst_bits[x] = grey_pal[pixel];
- }
- src_bits += src_pitch;
- dst_bits += dst_pitch;
- }
- }
- break;
-
- case 4:
- {
- for (unsigned y = 0; y < height; y++) {
- for (unsigned x = 0; x < width; x++) {
- const unsigned pixel = x & 0x01 ? src_bits[x >> 1] & 0x0F : src_bits[x >> 1] >> 4;
- dst_bits[x] = grey_pal[pixel];
- }
- src_bits += src_pitch;
- dst_bits += dst_pitch;
- }
- }
- break;
-
- case 8:
- {
- for (unsigned y = 0; y < height; y++) {
- for (unsigned x = 0; x < width; x++) {
- dst_bits[x] = grey_pal[src_bits[x]];
- }
- src_bits += src_pitch;
- dst_bits += dst_pitch;
- }
- }
- break;
- }
- return new_dib;
- }
-
- // Convert the bitmap to 8-bit greyscale
- return FreeImage_ConvertTo8Bits(dib);
-}
+// ========================================================== +// Bitmap conversion routines +// +// Design and implementation by +// - Floris van den Berg (flvdberg@wxs.nl) +// - Hervé Drolon (drolon@infonie.fr) +// - Jani Kajala (janik@remedy.fi) +// - Karl-Heinz Bussian (khbussian@moss.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! +// ========================================================== + +#include "FreeImage.h" +#include "Utilities.h" + +// ---------------------------------------------------------- +// internal conversions X to 8 bits +// ---------------------------------------------------------- + +void DLL_CALLCONV +FreeImage_ConvertLine1To8(BYTE *target, BYTE *source, int width_in_pixels) { + for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) + target[cols] = (source[cols >> 3] & (0x80 >> (cols & 0x07))) != 0 ? 255 : 0; +} + +void DLL_CALLCONV +FreeImage_ConvertLine4To8(BYTE *target, BYTE *source, int width_in_pixels) { + unsigned count_new = 0; + unsigned count_org = 0; + BOOL hinibble = TRUE; + + while (count_new < (unsigned)width_in_pixels) { + if (hinibble) { + target[count_new] = (source[count_org] >> 4); + } else { + target[count_new] = (source[count_org] & 0x0F); + count_org++; + } + hinibble = !hinibble; + count_new++; + } +} + +void DLL_CALLCONV +FreeImage_ConvertLine16To8_555(BYTE *target, BYTE *source, int width_in_pixels) { + const WORD *const bits = (WORD *)source; + for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) { + target[cols] = GREY((((bits[cols] & FI16_555_RED_MASK) >> FI16_555_RED_SHIFT) * 0xFF) / 0x1F, + (((bits[cols] & FI16_555_GREEN_MASK) >> FI16_555_GREEN_SHIFT) * 0xFF) / 0x1F, + (((bits[cols] & FI16_555_BLUE_MASK) >> FI16_555_BLUE_SHIFT) * 0xFF) / 0x1F); + } +} + +void DLL_CALLCONV +FreeImage_ConvertLine16To8_565(BYTE *target, BYTE *source, int width_in_pixels) { + const WORD *const bits = (WORD *)source; + for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) { + target[cols] = GREY((((bits[cols] & FI16_565_RED_MASK) >> FI16_565_RED_SHIFT) * 0xFF) / 0x1F, + (((bits[cols] & FI16_565_GREEN_MASK) >> FI16_565_GREEN_SHIFT) * 0xFF) / 0x3F, + (((bits[cols] & FI16_565_BLUE_MASK) >> FI16_565_BLUE_SHIFT) * 0xFF) / 0x1F); + } +} + +void DLL_CALLCONV +FreeImage_ConvertLine24To8(BYTE *target, BYTE *source, int width_in_pixels) { + for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) { + target[cols] = GREY(source[FI_RGBA_RED], source[FI_RGBA_GREEN], source[FI_RGBA_BLUE]); + source += 3; + } +} + +void DLL_CALLCONV +FreeImage_ConvertLine32To8(BYTE *target, BYTE *source, int width_in_pixels) { + for (unsigned cols = 0; cols < (unsigned)width_in_pixels; cols++) { + target[cols] = GREY(source[FI_RGBA_RED], source[FI_RGBA_GREEN], source[FI_RGBA_BLUE]); + source += 4; + } +} + +// ---------------------------------------------------------- +// smart convert X to 8 bits +// ---------------------------------------------------------- + +FIBITMAP * DLL_CALLCONV +FreeImage_ConvertTo8Bits(FIBITMAP *dib) { + if (!FreeImage_HasPixels(dib)) { + return NULL; + } + + const FREE_IMAGE_TYPE image_type = FreeImage_GetImageType(dib); + if (image_type != FIT_BITMAP && image_type != FIT_UINT16) { + return NULL; + } + + const unsigned bpp = FreeImage_GetBPP(dib); + + if (bpp != 8) { + + const unsigned width = FreeImage_GetWidth(dib); + const unsigned height = FreeImage_GetHeight(dib); + + // Allocate a destination image + FIBITMAP *new_dib = FreeImage_Allocate(width, height, 8); + if (new_dib == NULL) { + return NULL; + } + + // Copy metadata from src to dst + FreeImage_CloneMetadata(new_dib, dib); + + // Palette of destination image has already been initialized + RGBQUAD *new_pal = FreeImage_GetPalette(new_dib); + + const FREE_IMAGE_COLOR_TYPE color_type = FreeImage_GetColorType(dib); + + if (image_type == FIT_BITMAP) { + + switch(bpp) { + case 1: + { + if (color_type == FIC_PALETTE) { + // Copy the palette + RGBQUAD *old_pal = FreeImage_GetPalette(dib); + new_pal[0] = old_pal[0]; + new_pal[255] = old_pal[1]; + + } else if (color_type == FIC_MINISWHITE) { + // Create a reverse grayscale palette + CREATE_GREYSCALE_PALETTE_REVERSE(new_pal, 256); + } + + // Expand and copy the bitmap data + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine1To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + return new_dib; + } + + case 4 : + { + if (color_type == FIC_PALETTE) { + // Copy the palette + memcpy(new_pal, FreeImage_GetPalette(dib), 16 * sizeof(RGBQUAD)); + } + + // Expand and copy the bitmap data + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine4To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + return new_dib; + } + + case 16 : + { + // Expand and copy the bitmap data + if (IS_FORMAT_RGB565(dib)) { + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine16To8_565(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + } else { + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine16To8_555(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + } + return new_dib; + } + + case 24 : + { + // Expand and copy the bitmap data + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine24To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + return new_dib; + } + + case 32 : + { + // Expand and copy the bitmap data + for (unsigned rows = 0; rows < height; rows++) { + FreeImage_ConvertLine32To8(FreeImage_GetScanLine(new_dib, rows), FreeImage_GetScanLine(dib, rows), width); + } + return new_dib; + } + } + + } else if (image_type == FIT_UINT16) { + + const unsigned src_pitch = FreeImage_GetPitch(dib); + const unsigned dst_pitch = FreeImage_GetPitch(new_dib); + const BYTE *src_bits = FreeImage_GetBits(dib); + BYTE *dst_bits = FreeImage_GetBits(new_dib); + + for (unsigned rows = 0; rows < height; rows++) { + const WORD *const src_pixel = (WORD*)src_bits; + BYTE *dst_pixel = (BYTE*)dst_bits; + for(unsigned cols = 0; cols < width; cols++) { + dst_pixel[cols] = (BYTE)(src_pixel[cols] >> 8); + } + src_bits += src_pitch; + dst_bits += dst_pitch; + } + return new_dib; + } + + } // bpp != 8 + + return FreeImage_Clone(dib); +} + +FIBITMAP * DLL_CALLCONV +FreeImage_ConvertToGreyscale(FIBITMAP *dib) { + if (!FreeImage_HasPixels(dib)) { + return NULL; + } + + const FREE_IMAGE_COLOR_TYPE color_type = FreeImage_GetColorType(dib); + + if (color_type == FIC_PALETTE || color_type == FIC_MINISWHITE) { + + const unsigned bpp = FreeImage_GetBPP(dib); + const unsigned width = FreeImage_GetWidth(dib); + const unsigned height = FreeImage_GetHeight(dib); + + FIBITMAP *new_dib = FreeImage_Allocate(width, height, 8); + if (new_dib == NULL) { + return NULL; + } + + // Copy metadata from src to dst + FreeImage_CloneMetadata(new_dib, dib); + + // Create a greyscale palette + BYTE grey_pal[256]; + const RGBQUAD *pal = FreeImage_GetPalette(dib); + const unsigned size = CalculateUsedPaletteEntries(bpp); + for (unsigned i = 0; i < size; i++) { + grey_pal[i] = GREY(pal->rgbRed, pal->rgbGreen, pal->rgbBlue); + pal++; + } + + const BYTE *src_bits = FreeImage_GetBits(dib); + BYTE *dst_bits = FreeImage_GetBits(new_dib); + + const unsigned src_pitch = FreeImage_GetPitch(dib); + const unsigned dst_pitch = FreeImage_GetPitch(new_dib); + + switch(bpp) { + case 1: + { + for (unsigned y = 0; y < height; y++) { + for (unsigned x = 0; x < width; x++) { + const unsigned pixel = (src_bits[x >> 3] & (0x80 >> (x & 0x07))) != 0; + dst_bits[x] = grey_pal[pixel]; + } + src_bits += src_pitch; + dst_bits += dst_pitch; + } + } + break; + + case 4: + { + for (unsigned y = 0; y < height; y++) { + for (unsigned x = 0; x < width; x++) { + const unsigned pixel = x & 0x01 ? src_bits[x >> 1] & 0x0F : src_bits[x >> 1] >> 4; + dst_bits[x] = grey_pal[pixel]; + } + src_bits += src_pitch; + dst_bits += dst_pitch; + } + } + break; + + case 8: + { + for (unsigned y = 0; y < height; y++) { + for (unsigned x = 0; x < width; x++) { + dst_bits[x] = grey_pal[src_bits[x]]; + } + src_bits += src_pitch; + dst_bits += dst_pitch; + } + } + break; + } + return new_dib; + } + + // Convert the bitmap to 8-bit greyscale + return FreeImage_ConvertTo8Bits(dib); +} |