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windowscodecs: Implement CopyPixels for 24-bit ICO icons.

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This commit is contained in:
Vincent Povirk 2009-08-20 14:28:04 -05:00 committed by Alexandre Julliard
parent 1c25ee8ce7
commit 5d7cd19556
1 changed files with 51 additions and 0 deletions
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51
dlls/windowscodecs/icoformat.c
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@ -249,6 +249,57 @@ static HRESULT IcoFrameDecode_ReadPixels(IcoFrameDecode *This)
HeapFree(GetProcessHeap(), 0, tempdata);
break;
}
case 24:
{
UINT xorBytesPerRow = (width*3+3)/4*4;
UINT xorBytes = xorBytesPerRow * height;
INT xorStride;
BYTE *xorRow;
BYTE *bitsRow;
UINT x, y;
tempdata = HeapAlloc(GetProcessHeap(), 0, xorBytes);
if (!tempdata)
{
hr = E_OUTOFMEMORY;
goto fail;
}
hr = IStream_Read(This->parent->stream, tempdata, xorBytes, &bytesread);
if (FAILED(hr) || bytesread != xorBytes) goto fail;
if (bih.biHeight > 0) /* bottom-up DIB */
{
xorStride = -xorBytesPerRow;
xorRow = tempdata + (height-1)*xorBytesPerRow;
}
else /* top-down DIB */
{
xorStride = xorBytesPerRow;
xorRow = tempdata;
}
bits = HeapAlloc(GetProcessHeap(), 0, bitsSize);
/* copy BGR->BGRA */
bitsRow = bits;
for (y=0; y<height; y++) {
BYTE *xorByte=xorRow;
BYTE *bitsByte=bitsRow;
for (x=0; x<width; x++)
{
*bitsByte++ = *xorByte++; /* blue */
*bitsByte++ = *xorByte++; /* green */
*bitsByte++ = *xorByte++; /* red */
bitsByte++; /* alpha */
}
xorRow += xorStride;
bitsRow += bitsStride;
}
HeapFree(GetProcessHeap(), 0, tempdata);
break;
}
default:
FIXME("unsupported bitcount: %u\n", This->entry.wBitCount);
goto fail;