ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

windowscodecs: Implement CopyPalette for the GIF decoder.

This commit is contained in:
Vincent Povirk 2009-08-17 10:56:34 -05:00 committed by Alexandre Julliard
parent d095d27d92
commit 548cd05ceb
1 changed files with 37 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
dlls/windowscodecs/gifformat.c
View File

@ -129,8 +129,43 @@ static HRESULT WINAPI GifFrameDecode_GetResolution(IWICBitmapFrameDecode *iface,
static HRESULT WINAPI GifFrameDecode_CopyPalette(IWICBitmapFrameDecode *iface, static HRESULT WINAPI GifFrameDecode_CopyPalette(IWICBitmapFrameDecode *iface,
IWICPalette *pIPalette) IWICPalette *pIPalette)
{ {
FIXME("(%p,%p): stub\n", iface, pIPalette); GifFrameDecode *This = (GifFrameDecode*)iface;
return E_NOTIMPL; WICColor colors[256];
ColorMapObject *cm = This->frame->ImageDesc.ColorMap;
int i, trans;
ExtensionBlock *eb;
TRACE("(%p,%p)\n", iface, pIPalette);
if (!cm) cm = This->parent->gif->SColorMap;
if (cm->ColorCount > 256)
{
ERR("GIF contains %i colors???\n", cm->ColorCount);
return E_FAIL;
}
for (i = 0; i < cm->ColorCount; i++) {
colors[i] = 0xff000000| /* alpha */
cm->Colors[i].Red << 16|
cm->Colors[i].Green << 8|
cm->Colors[i].Blue;
}
/* look for the transparent color extension */
for (i = 0; i < This->frame->ExtensionBlockCount; ++i) {
eb = This->frame->ExtensionBlocks + i;
if (eb->Function == 0xF9 && eb->ByteCount == 4) {
if ((eb->Bytes[0] & 1) == 1) {
trans = (unsigned char)eb->Bytes[3];
colors[trans] &= 0xffffff; /* set alpha to 0 */
break;
}
}
}
IWICPalette_InitializeCustom(pIPalette, colors, cm->ColorCount);
return S_OK;
} }
static HRESULT WINAPI GifFrameDecode_CopyPixels(IWICBitmapFrameDecode *iface, static HRESULT WINAPI GifFrameDecode_CopyPixels(IWICBitmapFrameDecode *iface,