windowscodecs: Implement conversion from 4bppIndexed to 32bppBGRA.
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1a62109b70
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@ -37,6 +37,7 @@ struct FormatConverter;
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enum pixelformat {
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format_1bppIndexed,
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format_4bppIndexed,
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format_16bppBGR555,
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format_16bppBGR565,
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format_24bppBGR,
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@ -131,6 +132,63 @@ static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRe
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return res;
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}
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return S_OK;
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case format_4bppIndexed:
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if (prc)
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{
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HRESULT res;
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UINT x, y;
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BYTE *srcdata;
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UINT srcstride, srcdatasize;
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const BYTE *srcrow;
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const BYTE *srcbyte;
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BYTE *dstrow;
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DWORD *dstpixel;
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WICColor colors[16];
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IWICPalette *palette;
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UINT actualcolors;
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res = PaletteImpl_Create(&palette);
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if (FAILED(res)) return res;
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res = IWICBitmapSource_CopyPalette(This->source, palette);
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if (SUCCEEDED(res))
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res = IWICPalette_GetColors(palette, 16, colors, &actualcolors);
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IWICPalette_Release(palette);
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if (FAILED(res)) return res;
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srcstride = (prc->Width+1)/2;
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srcdatasize = srcstride * prc->Height;
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srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
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if (!srcdata) return E_OUTOFMEMORY;
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res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
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if (SUCCEEDED(res))
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{
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srcrow = srcdata;
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dstrow = pbBuffer;
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for (y=0; y<prc->Height; y++) {
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srcbyte=(const BYTE*)srcrow;
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dstpixel=(DWORD*)dstrow;
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for (x=0; x<prc->Width; x+=2) {
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BYTE srcval;
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srcval=*srcbyte++;
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*dstpixel++ = colors[srcval>>4];
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if (x+1 < prc->Width) *dstpixel++ = colors[srcval&0xf];
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}
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srcrow += srcstride;
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dstrow += cbStride;
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}
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}
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HeapFree(GetProcessHeap(), 0, srcdata);
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return res;
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}
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return S_OK;
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case format_16bppBGR555:
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if (prc)
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{
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@ -311,6 +369,7 @@ static HRESULT copypixels_to_32bppBGR(struct FormatConverter *This, const WICRec
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static const struct pixelformatinfo supported_formats[] = {
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{format_1bppIndexed, &GUID_WICPixelFormat1bppIndexed, NULL},
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{format_4bppIndexed, &GUID_WICPixelFormat4bppIndexed, NULL},
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{format_16bppBGR555, &GUID_WICPixelFormat16bppBGR555, NULL},
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{format_16bppBGR565, &GUID_WICPixelFormat16bppBGR565, NULL},
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{format_24bppBGR, &GUID_WICPixelFormat24bppBGR, NULL},
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@ -790,6 +790,7 @@ static struct regsvr_decoder const decoder_list[] = {
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static GUID const * const converter_formats[] = {
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&GUID_WICPixelFormat1bppIndexed,
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&GUID_WICPixelFormat4bppIndexed,
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&GUID_WICPixelFormat16bppBGR555,
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&GUID_WICPixelFormat16bppBGR565,
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&GUID_WICPixelFormat24bppBGR,
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