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windowscodecs: Use predefined WICBitmapPaletteTypeFixedGray16 palette instead of a handmade one.

This commit is contained in:
Dmitry Timoshkov 2012-07-13 10:08:58 +09:00 committed by Alexandre Julliard
parent 045ac64c1a
commit b82023b7c2
1 changed files with 10 additions and 22 deletions
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32
dlls/windowscodecs/converter.c
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@ -82,16 +82,6 @@ static inline FormatConverter *impl_from_IWICFormatConverter(IWICFormatConverter
return CONTAINING_RECORD(iface, FormatConverter, IWICFormatConverter_iface);
}
static void make_grayscale_palette(WICColor *colors, UINT num_colors)
{
int i, v;
for (i=0; i<num_colors; i++)
{
v = i * 255 / (num_colors-1);
colors[i] = 0xff000000 | v<<16 | v<<8 | v;
}
}
static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRect *prc,
UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer, enum pixelformat source_format)
{
@ -248,21 +238,19 @@ static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRe
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
if (source_format == format_4bppIndexed)
{
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
res = IWICBitmapSource_CopyPalette(This->source, palette);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 16, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
}
else
make_grayscale_palette(colors, 16);
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;