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reactos/dll/win32/windowscodecs/converter.c

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/*
* Copyright 2009 Vincent Povirk
* Copyright 2016 Dmitry Timoshkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include <stdarg.h>
#include <math.h>
#define COBJMACROS
#include "windef.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/heap.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
struct FormatConverter;
enum pixelformat {
format_1bppIndexed,
format_2bppIndexed,
format_4bppIndexed,
format_8bppIndexed,
format_BlackWhite,
format_2bppGray,
format_4bppGray,
format_8bppGray,
format_16bppGray,
format_16bppBGR555,
format_16bppBGR565,
format_16bppBGRA5551,
format_24bppBGR,
format_24bppRGB,
format_32bppGrayFloat,
format_32bppBGR,
format_32bppRGB,
format_32bppBGRA,
format_32bppRGBA,
format_32bppPBGRA,
format_32bppPRGBA,
format_48bppRGB,
format_64bppRGBA,
format_32bppCMYK,
};
typedef HRESULT (*copyfunc)(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format);
struct pixelformatinfo {
enum pixelformat format;
const WICPixelFormatGUID *guid;
copyfunc copy_function;
};
typedef struct FormatConverter {
IWICFormatConverter IWICFormatConverter_iface;
LONG ref;
IWICBitmapSource *source;
const struct pixelformatinfo *dst_format, *src_format;
WICBitmapDitherType dither;
double alpha_threshold;
IWICPalette *palette;
CRITICAL_SECTION lock; /* must be held when initialized */
} FormatConverter;
/* https://www.w3.org/Graphics/Color/srgb */
static inline float to_sRGB_component(float f)
{
if (f <= 0.0031308f) return 12.92f * f;
return 1.055f * powf(f, 1.0f/2.4f) - 0.055f;
}
#if 0 /* FIXME: enable once needed */
static inline float from_sRGB_component(float f)
{
if (f <= 0.04045f) return f / 12.92f;
return powf((f + 0.055f) / 1.055f, 2.4f);
}
static void from_sRGB(BYTE *bgr)
{
float r, g, b;
r = bgr[2] / 255.0f;
g = bgr[1] / 255.0f;
b = bgr[0] / 255.0f;
r = from_sRGB_component(r);
g = from_sRGB_component(g);
b = from_sRGB_component(b);
bgr[2] = (BYTE)(r * 255.0f);
bgr[1] = (BYTE)(g * 255.0f);
bgr[0] = (BYTE)(b * 255.0f);
}
static void to_sRGB(BYTE *bgr)
{
float r, g, b;
r = bgr[2] / 255.0f;
g = bgr[1] / 255.0f;
b = bgr[0] / 255.0f;
r = to_sRGB_component(r);
g = to_sRGB_component(g);
b = to_sRGB_component(b);
bgr[2] = (BYTE)(r * 255.0f);
bgr[1] = (BYTE)(g * 255.0f);
bgr[0] = (BYTE)(b * 255.0f);
}
#endif
static inline FormatConverter *impl_from_IWICFormatConverter(IWICFormatConverter *iface)
{
return CONTAINING_RECORD(iface, FormatConverter, IWICFormatConverter_iface);
}
static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
switch (source_format)
{
case format_1bppIndexed:
case format_BlackWhite:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[2];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
if (source_format == format_1bppIndexed)
res = IWICBitmapSource_CopyPalette(This->source, palette);
else
res = IWICPalette_InitializePredefined(palette, WICBitmapPaletteTypeFixedBW, FALSE);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 2, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = (prc->Width+7)/8;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x+=8) {
BYTE srcval;
srcval=*srcbyte++;
*dstpixel++ = colors[srcval>>7&1];
if (x+1 < prc->Width) *dstpixel++ = colors[srcval>>6&1];
if (x+2 < prc->Width) *dstpixel++ = colors[srcval>>5&1];
if (x+3 < prc->Width) *dstpixel++ = colors[srcval>>4&1];
if (x+4 < prc->Width) *dstpixel++ = colors[srcval>>3&1];
if (x+5 < prc->Width) *dstpixel++ = colors[srcval>>2&1];
if (x+6 < prc->Width) *dstpixel++ = colors[srcval>>1&1];
if (x+7 < prc->Width) *dstpixel++ = colors[srcval&1];
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_2bppIndexed:
case format_2bppGray:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[4];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
if (source_format == format_2bppIndexed)
res = IWICBitmapSource_CopyPalette(This->source, palette);
else
res = IWICPalette_InitializePredefined(palette, WICBitmapPaletteTypeFixedGray4, FALSE);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 4, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = (prc->Width+3)/4;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x+=4) {
BYTE srcval;
srcval=*srcbyte++;
*dstpixel++ = colors[srcval>>6];
if (x+1 < prc->Width) *dstpixel++ = colors[srcval>>4&0x3];
if (x+2 < prc->Width) *dstpixel++ = colors[srcval>>2&0x3];
if (x+3 < prc->Width) *dstpixel++ = colors[srcval&0x3];
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_4bppIndexed:
case format_4bppGray:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[16];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
if (source_format == format_4bppIndexed)
res = IWICBitmapSource_CopyPalette(This->source, palette);
else
res = IWICPalette_InitializePredefined(palette, WICBitmapPaletteTypeFixedGray16, FALSE);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 16, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = (prc->Width+1)/2;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x+=2) {
BYTE srcval;
srcval=*srcbyte++;
*dstpixel++ = colors[srcval>>4];
if (x+1 < prc->Width) *dstpixel++ = colors[srcval&0xf];
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_8bppGray:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++)
{
*dstpixel++ = 0xff000000|(*srcbyte<<16)|(*srcbyte<<8)|*srcbyte;
srcbyte++;
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_8bppIndexed:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[256];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
res = IWICBitmapSource_CopyPalette(This->source, palette);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 256, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++)
*dstpixel++ = colors[*srcbyte++];
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppGray:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = prc->Width * 2;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte = srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++)
{
srcbyte++;
*dstpixel++ = 0xff000000|(*srcbyte<<16)|(*srcbyte<<8)|*srcbyte;
srcbyte++;
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppBGR555:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const WORD *srcpixel;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = 2 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=(const WORD*)srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++) {
WORD srcval;
srcval=*srcpixel++;
*dstpixel++=0xff000000 | /* constant 255 alpha */
((srcval << 9) & 0xf80000) | /* r */
((srcval << 4) & 0x070000) | /* r - 3 bits */
((srcval << 6) & 0x00f800) | /* g */
((srcval << 1) & 0x000700) | /* g - 3 bits */
((srcval << 3) & 0x0000f8) | /* b */
((srcval >> 2) & 0x000007); /* b - 3 bits */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppBGR565:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const WORD *srcpixel;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = 2 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=(const WORD*)srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++) {
WORD srcval;
srcval=*srcpixel++;
*dstpixel++=0xff000000 | /* constant 255 alpha */
((srcval << 8) & 0xf80000) | /* r */
((srcval << 3) & 0x070000) | /* r - 3 bits */
((srcval << 5) & 0x00fc00) | /* g */
((srcval >> 1) & 0x000300) | /* g - 2 bits */
((srcval << 3) & 0x0000f8) | /* b */
((srcval >> 2) & 0x000007); /* b - 3 bits */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppBGRA5551:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const WORD *srcpixel;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = 2 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=(const WORD*)srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++) {
WORD srcval;
srcval=*srcpixel++;
*dstpixel++=((srcval & 0x8000) ? 0xff000000 : 0) | /* alpha */
((srcval << 9) & 0xf80000) | /* r */
((srcval << 4) & 0x070000) | /* r - 3 bits */
((srcval << 6) & 0x00f800) | /* g */
((srcval << 1) & 0x000700) | /* g - 3 bits */
((srcval << 3) & 0x0000f8) | /* b */
((srcval >> 2) & 0x000007); /* b - 3 bits */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_24bppBGR:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
BYTE *dstpixel;
srcstride = 3 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=dstrow;
for (x=0; x<prc->Width; x++) {
*dstpixel++=*srcpixel++; /* blue */
*dstpixel++=*srcpixel++; /* green */
*dstpixel++=*srcpixel++; /* red */
*dstpixel++=255; /* alpha */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_24bppRGB:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
BYTE *dstpixel;
BYTE tmppixel[3];
srcstride = 3 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=dstrow;
for (x=0; x<prc->Width; x++) {
tmppixel[0]=*srcpixel++; /* red */
tmppixel[1]=*srcpixel++; /* green */
tmppixel[2]=*srcpixel++; /* blue */
*dstpixel++=tmppixel[2]; /* blue */
*dstpixel++=tmppixel[1]; /* green */
*dstpixel++=tmppixel[0]; /* red */
*dstpixel++=255; /* alpha */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_32bppBGR:
if (prc)
{
HRESULT res;
INT x, y;
res = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (FAILED(res)) return res;
/* set all alpha values to 255 */
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
pbBuffer[cbStride*y+4*x+3] = 0xff;
}
return S_OK;
case format_32bppBGRA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
case format_32bppPBGRA:
if (prc)
{
HRESULT res;
INT x, y;
res = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (FAILED(res)) return res;
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
{
BYTE alpha = pbBuffer[cbStride*y+4*x+3];
if (alpha != 0 && alpha != 255)
{
pbBuffer[cbStride*y+4*x] = pbBuffer[cbStride*y+4*x] * 255 / alpha;
pbBuffer[cbStride*y+4*x+1] = pbBuffer[cbStride*y+4*x+1] * 255 / alpha;
pbBuffer[cbStride*y+4*x+2] = pbBuffer[cbStride*y+4*x+2] * 255 / alpha;
}
}
}
return S_OK;
case format_48bppRGB:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = 6 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++) {
BYTE red, green, blue;
srcpixel++; red = *srcpixel++;
srcpixel++; green = *srcpixel++;
srcpixel++; blue = *srcpixel++;
*dstpixel++=0xff000000|red<<16|green<<8|blue;
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_64bppRGBA:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
DWORD *dstpixel;
srcstride = 8 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x++) {
BYTE red, green, blue, alpha;
srcpixel++; red = *srcpixel++;
srcpixel++; green = *srcpixel++;
srcpixel++; blue = *srcpixel++;
srcpixel++; alpha = *srcpixel++;
*dstpixel++=alpha<<24|red<<16|green<<8|blue;
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_32bppCMYK:
if (prc)
{
HRESULT res;
UINT x, y;
res = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (FAILED(res)) return res;
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
{
BYTE *pixel = pbBuffer+cbStride*y+4*x;
BYTE c=pixel[0], m=pixel[1], y=pixel[2], k=pixel[3];
pixel[0] = (255-y)*(255-k)/255; /* blue */
pixel[1] = (255-m)*(255-k)/255; /* green */
pixel[2] = (255-c)*(255-k)/255; /* red */
pixel[3] = 255; /* alpha */
}
}
return S_OK;
default:
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
}
static HRESULT copypixels_to_32bppRGBA(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_32bppRGB:
if (prc)
{
INT x, y;
hr = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (FAILED(hr)) return hr;
/* set all alpha values to 255 */
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
pbBuffer[cbStride*y+4*x+3] = 0xff;
}
return S_OK;
case format_32bppRGBA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
case format_32bppPRGBA:
if (prc)
{
INT x, y;
hr = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (FAILED(hr)) return hr;
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
{
BYTE alpha = pbBuffer[cbStride*y+4*x+3];
if (alpha != 0 && alpha != 255)
{
pbBuffer[cbStride*y+4*x] = pbBuffer[cbStride*y+4*x] * 255 / alpha;
pbBuffer[cbStride*y+4*x+1] = pbBuffer[cbStride*y+4*x+1] * 255 / alpha;
pbBuffer[cbStride*y+4*x+2] = pbBuffer[cbStride*y+4*x+2] * 255 / alpha;
}
}
}
return S_OK;
default:
hr = copypixels_to_32bppBGRA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
if (SUCCEEDED(hr) && prc)
reverse_bgr8(4, pbBuffer, prc->Width, prc->Height, cbStride);
return hr;
}
}
static HRESULT copypixels_to_32bppBGR(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
switch (source_format)
{
case format_32bppBGR:
case format_32bppBGRA:
case format_32bppPBGRA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
default:
return copypixels_to_32bppBGRA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
}
}
static HRESULT copypixels_to_32bppRGB(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
switch (source_format)
{
case format_32bppRGB:
case format_32bppRGBA:
case format_32bppPRGBA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
default:
return copypixels_to_32bppRGBA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
}
}
static HRESULT copypixels_to_32bppPBGRA(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_32bppPBGRA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
default:
hr = copypixels_to_32bppBGRA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
if (SUCCEEDED(hr) && prc)
{
INT x, y;
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
{
BYTE alpha = pbBuffer[cbStride*y+4*x+3];
if (alpha != 255)
{
pbBuffer[cbStride*y+4*x] = pbBuffer[cbStride*y+4*x] * alpha / 255;
pbBuffer[cbStride*y+4*x+1] = pbBuffer[cbStride*y+4*x+1] * alpha / 255;
pbBuffer[cbStride*y+4*x+2] = pbBuffer[cbStride*y+4*x+2] * alpha / 255;
}
}
}
return hr;
}
}
static HRESULT copypixels_to_32bppPRGBA(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_32bppPRGBA:
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
default:
hr = copypixels_to_32bppRGBA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
if (SUCCEEDED(hr) && prc)
{
INT x, y;
for (y=0; y<prc->Height; y++)
for (x=0; x<prc->Width; x++)
{
BYTE alpha = pbBuffer[cbStride*y+4*x+3];
if (alpha != 255)
{
pbBuffer[cbStride*y+4*x] = pbBuffer[cbStride*y+4*x] * alpha / 255;
pbBuffer[cbStride*y+4*x+1] = pbBuffer[cbStride*y+4*x+1] * alpha / 255;
pbBuffer[cbStride*y+4*x+2] = pbBuffer[cbStride*y+4*x+2] * alpha / 255;
}
}
}
return hr;
}
}
static HRESULT copypixels_to_24bppBGR(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_24bppBGR:
case format_24bppRGB:
if (prc)
{
hr = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (SUCCEEDED(hr) && source_format == format_24bppRGB)
reverse_bgr8(3, pbBuffer, prc->Width, prc->Height, cbStride);
return hr;
}
return S_OK;
case format_32bppBGR:
case format_32bppBGRA:
case format_32bppPBGRA:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
BYTE *dstpixel;
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=dstrow;
for (x=0; x<prc->Width; x++) {
*dstpixel++=*srcpixel++; /* blue */
*dstpixel++=*srcpixel++; /* green */
*dstpixel++=*srcpixel++; /* red */
srcpixel++; /* alpha */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_32bppGrayFloat:
if (prc)
{
BYTE *srcdata;
UINT srcstride, srcdatasize;
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
float *gray_float = (float *)src;
BYTE *bgr = dst;
for (x = 0; x < prc->Width; x++)
{
BYTE gray = (BYTE)floorf(to_sRGB_component(gray_float[x]) * 255.0f + 0.51f);
*bgr++ = gray;
*bgr++ = gray;
*bgr++ = gray;
}
src += srcstride;
dst += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return hr;
}
return S_OK;
case format_32bppCMYK:
if (prc)
{
BYTE *srcdata;
UINT srcstride, srcdatasize;
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = heap_alloc(srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
BYTE *cmyk = src;
BYTE *bgr = dst;
for (x = 0; x < prc->Width; x++)
{
BYTE c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
bgr[0] = (255 - y) * (255 - k) / 255; /* B */
bgr[1] = (255 - m) * (255 - k) / 255; /* G */
bgr[2] = (255 - c) * (255 - k) / 255; /* R */
cmyk += 4;
bgr += 3;
}
src += srcstride;
dst += cbStride;
}
}
heap_free(srcdata);
return hr;
}
return S_OK;
default:
FIXME("Unimplemented conversion path!\n");
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
}
static HRESULT copypixels_to_24bppRGB(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_24bppBGR:
case format_24bppRGB:
if (prc)
{
hr = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
if (SUCCEEDED(hr) && source_format == format_24bppBGR)
reverse_bgr8(3, pbBuffer, prc->Width, prc->Height, cbStride);
return hr;
}
return S_OK;
case format_32bppBGR:
case format_32bppBGRA:
case format_32bppPBGRA:
if (prc)
{
HRESULT res;
INT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcpixel;
BYTE *dstrow;
BYTE *dstpixel;
BYTE tmppixel[3];
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcpixel=srcrow;
dstpixel=dstrow;
for (x=0; x<prc->Width; x++) {
tmppixel[0]=*srcpixel++; /* blue */
tmppixel[1]=*srcpixel++; /* green */
tmppixel[2]=*srcpixel++; /* red */
srcpixel++; /* alpha */
*dstpixel++=tmppixel[2]; /* red */
*dstpixel++=tmppixel[1]; /* green */
*dstpixel++=tmppixel[0]; /* blue */
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
default:
FIXME("Unimplemented conversion path!\n");
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
}
static HRESULT copypixels_to_32bppGrayFloat(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
switch (source_format)
{
case format_32bppBGR:
case format_32bppBGRA:
case format_32bppPBGRA:
case format_32bppGrayFloat:
if (prc)
{
hr = IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
break;
}
return S_OK;
default:
hr = copypixels_to_32bppBGRA(This, prc, cbStride, cbBufferSize, pbBuffer, source_format);
break;
}
if (SUCCEEDED(hr) && prc && source_format != format_32bppGrayFloat)
{
INT x, y;
BYTE *p = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
BYTE *bgr = p;
for (x = 0; x < prc->Width; x++)
{
float gray = (bgr[2] * 0.2126f + bgr[1] * 0.7152f + bgr[0] * 0.0722f) / 255.0f;
*(float *)bgr = gray;
bgr += 4;
}
p += cbStride;
}
}
return hr;
}
static HRESULT copypixels_to_8bppGray(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
BYTE *srcdata;
UINT srcstride, srcdatasize;
if (source_format == format_8bppGray)
{
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
}
if (source_format == format_32bppGrayFloat)
{
hr = S_OK;
if (prc)
{
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y=0; y < prc->Height; y++)
{
float *srcpixel = (float*)src;
BYTE *dstpixel = dst;
for (x=0; x < prc->Width; x++)
*dstpixel++ = (BYTE)floorf(to_sRGB_component(*srcpixel++) * 255.0f + 0.51f);
src += srcstride;
dst += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
}
return hr;
}
if (!prc)
return copypixels_to_24bppBGR(This, NULL, cbStride, cbBufferSize, pbBuffer, source_format);
srcstride = 3 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = copypixels_to_24bppBGR(This, prc, srcstride, srcdatasize, srcdata, source_format);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
BYTE *bgr = src;
for (x = 0; x < prc->Width; x++)
{
float gray = (bgr[2] * 0.2126f + bgr[1] * 0.7152f + bgr[0] * 0.0722f) / 255.0f;
gray = to_sRGB_component(gray) * 255.0f;
dst[x] = (BYTE)floorf(gray + 0.51f);
bgr += 3;
}
src += srcstride;
dst += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return hr;
}
static UINT rgb_to_palette_index(BYTE bgr[3], WICColor *colors, UINT count)
{
UINT best_diff, best_index, i;
best_diff = ~0;
best_index = 0;
for (i = 0; i < count; i++)
{
BYTE pal_r, pal_g, pal_b;
UINT diff_r, diff_g, diff_b, diff;
pal_r = colors[i] >> 16;
pal_g = colors[i] >> 8;
pal_b = colors[i];
diff_r = bgr[2] - pal_r;
diff_g = bgr[1] - pal_g;
diff_b = bgr[0] - pal_b;
diff = diff_r * diff_r + diff_g * diff_g + diff_b * diff_b;
if (diff == 0) return i;
if (diff < best_diff)
{
best_diff = diff;
best_index = i;
}
}
return best_index;
}
static HRESULT copypixels_to_8bppIndexed(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
HRESULT hr;
BYTE *srcdata;
WICColor colors[256];
UINT srcstride, srcdatasize, count;
if (source_format == format_8bppIndexed)
{
if (prc)
return IWICBitmapSource_CopyPixels(This->source, prc, cbStride, cbBufferSize, pbBuffer);
return S_OK;
}
if (!prc)
return copypixels_to_24bppBGR(This, NULL, cbStride, cbBufferSize, pbBuffer, source_format);
if (!This->palette) return WINCODEC_ERR_WRONGSTATE;
hr = IWICPalette_GetColors(This->palette, 256, colors, &count);
if (hr != S_OK) return hr;
srcstride = 3 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = copypixels_to_24bppBGR(This, prc, srcstride, srcdatasize, srcdata, source_format);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
BYTE *bgr = src;
for (x = 0; x < prc->Width; x++)
{
dst[x] = rgb_to_palette_index(bgr, colors, count);
bgr += 3;
}
src += srcstride;
dst += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return hr;
}
static const struct pixelformatinfo supported_formats[] = {
{format_1bppIndexed, &GUID_WICPixelFormat1bppIndexed, NULL},
{format_2bppIndexed, &GUID_WICPixelFormat2bppIndexed, NULL},
{format_4bppIndexed, &GUID_WICPixelFormat4bppIndexed, NULL},
{format_8bppIndexed, &GUID_WICPixelFormat8bppIndexed, copypixels_to_8bppIndexed},
{format_BlackWhite, &GUID_WICPixelFormatBlackWhite, NULL},
{format_2bppGray, &GUID_WICPixelFormat2bppGray, NULL},
{format_4bppGray, &GUID_WICPixelFormat4bppGray, NULL},
{format_8bppGray, &GUID_WICPixelFormat8bppGray, copypixels_to_8bppGray},
{format_16bppGray, &GUID_WICPixelFormat16bppGray, NULL},
{format_16bppBGR555, &GUID_WICPixelFormat16bppBGR555, NULL},
{format_16bppBGR565, &GUID_WICPixelFormat16bppBGR565, NULL},
{format_16bppBGRA5551, &GUID_WICPixelFormat16bppBGRA5551, NULL},
{format_24bppBGR, &GUID_WICPixelFormat24bppBGR, copypixels_to_24bppBGR},
{format_24bppRGB, &GUID_WICPixelFormat24bppRGB, copypixels_to_24bppRGB},
{format_32bppGrayFloat, &GUID_WICPixelFormat32bppGrayFloat, copypixels_to_32bppGrayFloat},
{format_32bppBGR, &GUID_WICPixelFormat32bppBGR, copypixels_to_32bppBGR},
{format_32bppRGB, &GUID_WICPixelFormat32bppRGB, copypixels_to_32bppRGB},
{format_32bppBGRA, &GUID_WICPixelFormat32bppBGRA, copypixels_to_32bppBGRA},
{format_32bppRGBA, &GUID_WICPixelFormat32bppRGBA, copypixels_to_32bppRGBA},
{format_32bppPBGRA, &GUID_WICPixelFormat32bppPBGRA, copypixels_to_32bppPBGRA},
{format_32bppPRGBA, &GUID_WICPixelFormat32bppPRGBA, copypixels_to_32bppPRGBA},
{format_48bppRGB, &GUID_WICPixelFormat48bppRGB, NULL},
{format_64bppRGBA, &GUID_WICPixelFormat64bppRGBA, NULL},
{format_32bppCMYK, &GUID_WICPixelFormat32bppCMYK, NULL},
{0}
};
static const struct pixelformatinfo *get_formatinfo(const WICPixelFormatGUID *format)
{
UINT i;
for (i=0; supported_formats[i].guid; i++)
if (IsEqualGUID(supported_formats[i].guid, format)) return &supported_formats[i];
return NULL;
}
static HRESULT WINAPI FormatConverter_QueryInterface(IWICFormatConverter *iface, REFIID iid,
void **ppv)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapSource, iid) ||
IsEqualIID(&IID_IWICFormatConverter, iid))
{
*ppv = &This->IWICFormatConverter_iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI FormatConverter_AddRef(IWICFormatConverter *iface)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
ULONG ref = InterlockedIncrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
return ref;
}
static ULONG WINAPI FormatConverter_Release(IWICFormatConverter *iface)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p) refcount=%u\n", iface, ref);
if (ref == 0)
{
This->lock.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->lock);
if (This->source) IWICBitmapSource_Release(This->source);
if (This->palette) IWICPalette_Release(This->palette);
HeapFree(GetProcessHeap(), 0, This);
}
return ref;
}
static HRESULT WINAPI FormatConverter_GetSize(IWICFormatConverter *iface,
UINT *puiWidth, UINT *puiHeight)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
TRACE("(%p,%p,%p)\n", iface, puiWidth, puiHeight);
if (This->source)
return IWICBitmapSource_GetSize(This->source, puiWidth, puiHeight);
else
return WINCODEC_ERR_NOTINITIALIZED;
}
static HRESULT WINAPI FormatConverter_GetPixelFormat(IWICFormatConverter *iface,
WICPixelFormatGUID *pPixelFormat)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
TRACE("(%p,%p)\n", iface, pPixelFormat);
if (This->source)
memcpy(pPixelFormat, This->dst_format->guid, sizeof(GUID));
else
return WINCODEC_ERR_NOTINITIALIZED;
return S_OK;
}
static HRESULT WINAPI FormatConverter_GetResolution(IWICFormatConverter *iface,
double *pDpiX, double *pDpiY)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
TRACE("(%p,%p,%p)\n", iface, pDpiX, pDpiY);
if (This->source)
return IWICBitmapSource_GetResolution(This->source, pDpiX, pDpiY);
else
return WINCODEC_ERR_NOTINITIALIZED;
}
static HRESULT WINAPI FormatConverter_CopyPalette(IWICFormatConverter *iface,
IWICPalette *palette)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
TRACE("(%p,%p)\n", iface, palette);
if (!palette) return E_INVALIDARG;
if (!This->source) return WINCODEC_ERR_WRONGSTATE;
if (!This->palette)
{
HRESULT hr;
UINT bpp;
hr = get_pixelformat_bpp(This->dst_format->guid, &bpp);
if (hr != S_OK) return hr;
if (bpp <= 8) return WINCODEC_ERR_WRONGSTATE;
return IWICBitmapSource_CopyPalette(This->source, palette);
}
return IWICPalette_InitializeFromPalette(palette, This->palette);
}
static HRESULT WINAPI FormatConverter_CopyPixels(IWICFormatConverter *iface,
const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
WICRect rc;
HRESULT hr;
TRACE("(%p,%s,%u,%u,%p)\n", iface, debug_wic_rect(prc), cbStride, cbBufferSize, pbBuffer);
if (This->source)
{
if (!prc)
{
UINT width, height;
hr = IWICBitmapSource_GetSize(This->source, &width, &height);
if (FAILED(hr)) return hr;
rc.X = 0;
rc.Y = 0;
rc.Width = width;
rc.Height = height;
prc = &rc;
}
return This->dst_format->copy_function(This, prc, cbStride, cbBufferSize,
pbBuffer, This->src_format->format);
}
else
return WINCODEC_ERR_WRONGSTATE;
}
static HRESULT WINAPI FormatConverter_Initialize(IWICFormatConverter *iface,
IWICBitmapSource *source, REFWICPixelFormatGUID dstFormat, WICBitmapDitherType dither,
IWICPalette *palette, double alpha_threshold, WICBitmapPaletteType palette_type)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
const struct pixelformatinfo *srcinfo, *dstinfo;
GUID srcFormat;
HRESULT res;
TRACE("(%p,%p,%s,%u,%p,%0.3f,%u)\n", iface, source, debugstr_guid(dstFormat),
dither, palette, alpha_threshold, palette_type);
if (!palette)
{
UINT bpp;
res = get_pixelformat_bpp(dstFormat, &bpp);
if (res != S_OK) return res;
res = PaletteImpl_Create(&palette);
if (res != S_OK) return res;
switch (palette_type)
{
case WICBitmapPaletteTypeCustom:
IWICPalette_Release(palette);
palette = NULL;
if (bpp <= 8) return E_INVALIDARG;
break;
case WICBitmapPaletteTypeMedianCut:
{
if (bpp <= 8)
res = IWICPalette_InitializeFromBitmap(palette, source, 1 << bpp, FALSE);
break;
}
default:
if (bpp <= 8)
res = IWICPalette_InitializePredefined(palette, palette_type, FALSE);
break;
}
if (res != S_OK)
{
IWICPalette_Release(palette);
return res;
}
}
else
IWICPalette_AddRef(palette);
EnterCriticalSection(&This->lock);
if (This->source)
{
res = WINCODEC_ERR_WRONGSTATE;
goto end;
}
res = IWICBitmapSource_GetPixelFormat(source, &srcFormat);
if (FAILED(res)) goto end;
srcinfo = get_formatinfo(&srcFormat);
if (!srcinfo)
{
res = WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
FIXME("Unsupported source format %s\n", debugstr_guid(&srcFormat));
goto end;
}
dstinfo = get_formatinfo(dstFormat);
if (!dstinfo)
{
res = WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
FIXME("Unsupported destination format %s\n", debugstr_guid(dstFormat));
goto end;
}
if (dstinfo->copy_function)
{
IWICBitmapSource_AddRef(source);
This->src_format = srcinfo;
This->dst_format = dstinfo;
This->dither = dither;
This->alpha_threshold = alpha_threshold;
This->palette = palette;
This->source = source;
}
else
{
FIXME("Unsupported conversion %s -> %s\n", debugstr_guid(&srcFormat), debugstr_guid(dstFormat));
res = WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
end:
LeaveCriticalSection(&This->lock);
if (res != S_OK && palette)
IWICPalette_Release(palette);
return res;
}
static HRESULT WINAPI FormatConverter_CanConvert(IWICFormatConverter *iface,
REFWICPixelFormatGUID srcPixelFormat, REFWICPixelFormatGUID dstPixelFormat,
BOOL *pfCanConvert)
{
FormatConverter *This = impl_from_IWICFormatConverter(iface);
const struct pixelformatinfo *srcinfo, *dstinfo;
TRACE("(%p,%s,%s,%p)\n", iface, debugstr_guid(srcPixelFormat),
debugstr_guid(dstPixelFormat), pfCanConvert);
srcinfo = get_formatinfo(srcPixelFormat);
if (!srcinfo)
{
FIXME("Unsupported source format %s\n", debugstr_guid(srcPixelFormat));
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
dstinfo = get_formatinfo(dstPixelFormat);
if (!dstinfo)
{
FIXME("Unsupported destination format %s\n", debugstr_guid(dstPixelFormat));
return WINCODEC_ERR_UNSUPPORTEDPIXELFORMAT;
}
if (dstinfo->copy_function &&
SUCCEEDED(dstinfo->copy_function(This, NULL, 0, 0, NULL, dstinfo->format)))
*pfCanConvert = TRUE;
else
{
FIXME("Unsupported conversion %s -> %s\n", debugstr_guid(srcPixelFormat), debugstr_guid(dstPixelFormat));
*pfCanConvert = FALSE;
}
return S_OK;
}
static const IWICFormatConverterVtbl FormatConverter_Vtbl = {
FormatConverter_QueryInterface,
FormatConverter_AddRef,
FormatConverter_Release,
FormatConverter_GetSize,
FormatConverter_GetPixelFormat,
FormatConverter_GetResolution,
FormatConverter_CopyPalette,
FormatConverter_CopyPixels,
FormatConverter_Initialize,
FormatConverter_CanConvert
};
HRESULT FormatConverter_CreateInstance(REFIID iid, void** ppv)
{
FormatConverter *This;
HRESULT ret;
TRACE("(%s,%p)\n", debugstr_guid(iid), ppv);
*ppv = NULL;
This = HeapAlloc(GetProcessHeap(), 0, sizeof(FormatConverter));
if (!This) return E_OUTOFMEMORY;
This->IWICFormatConverter_iface.lpVtbl = &FormatConverter_Vtbl;
This->ref = 1;
This->source = NULL;
This->palette = NULL;
InitializeCriticalSection(&This->lock);
This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FormatConverter.lock");
ret = IWICFormatConverter_QueryInterface(&This->IWICFormatConverter_iface, iid, ppv);
IWICFormatConverter_Release(&This->IWICFormatConverter_iface);
return ret;
}
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