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// ==========================================================
// Bitmap conversion routines
//
// Design and implementation by
// - Floris van den Berg (flvdberg@wxs.nl)
// - Herv Drolon (drolon@infonie.fr)
// - Jani Kajala (janik@remedy.fi)
//
// 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"
#include "Quantizers.h"
// ----------------------------------------------------------
#define CONVERT(from, to) case to : FreeImage_ConvertLine##from##To##to(bits, scanline, FreeImage_GetWidth(dib)); break;
#define CONVERTWITHPALETTE(from, to) case to : FreeImage_ConvertLine##from##To##to(bits, scanline, FreeImage_GetWidth(dib), FreeImage_GetPalette(dib)); break;
#define CONVERTTO16(from) \
case 16 : \
if ((red_mask == FI16_555_RED_MASK) && (green_mask == FI16_555_GREEN_MASK) && (blue_mask == FI16_555_BLUE_MASK)) { \
FreeImage_ConvertLine##from##To16_555(bits, scanline, FreeImage_GetWidth(dib)); \
} else { \
FreeImage_ConvertLine##from##To16_565(bits, scanline, FreeImage_GetWidth(dib)); \
} \
break;
#define CONVERTTO16WITHPALETTE(from) \
case 16 : \
if ((red_mask == FI16_555_RED_MASK) && (green_mask == FI16_555_GREEN_MASK) && (blue_mask == FI16_555_BLUE_MASK)) { \
FreeImage_ConvertLine##from##To16_555(bits, scanline, FreeImage_GetWidth(dib), FreeImage_GetPalette(dib)); \
} else { \
FreeImage_ConvertLine##from##To16_565(bits, scanline, FreeImage_GetWidth(dib), FreeImage_GetPalette(dib)); \
} \
break;
// ==========================================================
FIBITMAP * DLL_CALLCONV
FreeImage_ColorQuantize(FIBITMAP *dib, FREE_IMAGE_QUANTIZE quantize) {
return FreeImage_ColorQuantizeEx(dib, quantize);
}
FIBITMAP * DLL_CALLCONV
FreeImage_ColorQuantizeEx(FIBITMAP *dib, FREE_IMAGE_QUANTIZE quantize, int PaletteSize, int ReserveSize, RGBQUAD *ReservePalette) {
if( PaletteSize < 2 ) PaletteSize = 2;
if( PaletteSize > 256 ) PaletteSize = 256;
if( ReserveSize < 0 ) ReserveSize = 0;
if( ReserveSize > PaletteSize ) ReserveSize = PaletteSize;
if (dib) {
if (FreeImage_GetBPP(dib) == 24) {
switch(quantize) {
case FIQ_WUQUANT :
{
try {
WuQuantizer Q (dib);
return Q.Quantize(PaletteSize, ReserveSize, ReservePalette);
} catch (char *) {
return NULL;
}
}
case FIQ_NNQUANT :
{
// sampling factor in range 1..30.
// 1 => slower (but better), 30 => faster. Default value is 1
const int sampling = 1;
NNQuantizer Q(PaletteSize);
return Q.Quantize(dib, ReserveSize, ReservePalette, sampling);
}
}
}
}
return NULL;
}
// ==========================================================
FIBITMAP * DLL_CALLCONV
FreeImage_ConvertFromRawBits(BYTE *bits, int width, int height, int pitch, unsigned bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask, BOOL topdown) {
FIBITMAP *dib = FreeImage_Allocate(width, height, bpp, red_mask, green_mask, blue_mask);
if (dib != NULL) {
if (topdown) {
for (int i = height - 1; i >= 0; --i) {
memcpy(FreeImage_GetScanLine(dib, i), bits, FreeImage_GetLine(dib));
bits += pitch;
}
} else {
for (int i = 0; i < height; ++i) {
memcpy(FreeImage_GetScanLine(dib, i), bits, FreeImage_GetLine(dib));
bits += pitch;
}
}
}
return dib;
}
void DLL_CALLCONV
FreeImage_ConvertToRawBits(BYTE *bits, FIBITMAP *dib, int pitch, unsigned bpp, unsigned red_mask, unsigned green_mask, unsigned blue_mask, BOOL topdown) {
if ((dib != NULL) && (bits != NULL)) {
for (unsigned i = 0; i < FreeImage_GetHeight(dib); ++i) {
BYTE *scanline = FreeImage_GetScanLine(dib, topdown ? (FreeImage_GetHeight(dib) - i - 1) : i);
if ((bpp == 16) && (FreeImage_GetBPP(dib) == 16)) {
// convert 555 to 565 or vice versa
if ((red_mask == FI16_555_RED_MASK) && (green_mask == FI16_555_GREEN_MASK) && (blue_mask == FI16_555_BLUE_MASK)) {
if ((FreeImage_GetRedMask(dib) == FI16_565_RED_MASK) && (FreeImage_GetGreenMask(dib) == FI16_565_GREEN_MASK) && (FreeImage_GetBlueMask(dib) == FI16_565_BLUE_MASK)) {
FreeImage_ConvertLine16_565_To16_555(bits, scanline, FreeImage_GetWidth(dib));
} else {
memcpy(bits, scanline, FreeImage_GetLine(dib));
}
} else {
if ((FreeImage_GetRedMask(dib) == FI16_555_RED_MASK) && (FreeImage_GetGreenMask(dib) == FI16_555_GREEN_MASK) && (FreeImage_GetBlueMask(dib) == FI16_555_BLUE_MASK)) {
FreeImage_ConvertLine16_555_To16_565(bits, scanline, FreeImage_GetWidth(dib));
} else {
memcpy(bits, scanline, FreeImage_GetLine(dib));
}
}
} else if (FreeImage_GetBPP(dib) != bpp) {
switch(FreeImage_GetBPP(dib)) {
case 1 :
switch(bpp) {
CONVERT(1, 8)
CONVERTTO16WITHPALETTE(1)
CONVERTWITHPALETTE(1, 24)
CONVERTWITHPALETTE(1, 32)
};
break;
case 4 :
switch(bpp) {
CONVERT(4, 8)
CONVERTTO16WITHPALETTE(4)
CONVERTWITHPALETTE(4, 24)
CONVERTWITHPALETTE(4, 32)
};
break;
case 8 :
switch(bpp) {
CONVERTTO16WITHPALETTE(8)
CONVERTWITHPALETTE(8, 24)
CONVERTWITHPALETTE(8, 32)
};
break;
case 24 :
switch(bpp) {
CONVERT(24, 8)
CONVERTTO16(24)
CONVERT(24, 32)
};
break;
case 32 :
switch(bpp) {
CONVERT(32, 8)
CONVERTTO16(32)
CONVERT(32, 24)
};
break;
};
} else {
memcpy(bits, scanline, FreeImage_GetLine(dib));
}
bits += pitch;
}
}
}
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