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windowscodecs: Add support for converting to 32bppPBGRA.

This commit is contained in:
Vincent Povirk 2011-04-15 02:31:12 -05:00 committed by Alexandre Julliard
parent 10dd670056
commit c3dc0cfa32
1 changed files with 34 additions and 1 deletions
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35
dlls/windowscodecs/converter.c
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@ -793,6 +793,39 @@ static HRESULT copypixels_to_32bppBGR(struct FormatConverter *This, const WICRec
}
}
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)
{
UINT 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 const struct pixelformatinfo supported_formats[] = {
{format_1bppIndexed, &GUID_WICPixelFormat1bppIndexed, NULL},
{format_2bppIndexed, &GUID_WICPixelFormat2bppIndexed, NULL},
@ -809,7 +842,7 @@ static const struct pixelformatinfo supported_formats[] = {
{format_24bppBGR, &GUID_WICPixelFormat24bppBGR, NULL},
{format_32bppBGR, &GUID_WICPixelFormat32bppBGR, copypixels_to_32bppBGR},
{format_32bppBGRA, &GUID_WICPixelFormat32bppBGRA, copypixels_to_32bppBGRA},
{format_32bppPBGRA, &GUID_WICPixelFormat32bppPBGRA, NULL},
{format_32bppPBGRA, &GUID_WICPixelFormat32bppPBGRA, copypixels_to_32bppPBGRA},
{format_48bppRGB, &GUID_WICPixelFormat48bppRGB, NULL},
{format_64bppRGBA, &GUID_WICPixelFormat64bppRGBA, NULL},
{format_32bppCMYK, &GUID_WICPixelFormat32bppCMYK, NULL},