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windowscodecs: Implement conversion from 1bppIndexed to 32bppBGRA.

This commit is contained in:
Vincent Povirk 2009-08-13 13:48:22 -05:00 committed by Alexandre Julliard
parent 7bbe731252
commit 3e5cdea0b4
2 changed files with 66 additions and 0 deletions
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65
dlls/windowscodecs/converter.c
View File

@ -36,6 +36,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
struct FormatConverter;
enum pixelformat {
format_1bppIndexed,
format_16bppBGR555,
format_16bppBGR565,
format_32bppBGR,
@ -66,6 +67,69 @@ static HRESULT copypixels_to_32bppBGRA(struct FormatConverter *This, const WICRe
{
switch (source_format)
{
case format_1bppIndexed:
if (prc)
{
HRESULT res;
UINT x, y;
BYTE *srcdata;
UINT srcstride, srcdatasize;
const BYTE *srcrow;
const BYTE *srcbyte;
BYTE *dstrow;
DWORD *dstpixel;
WICColor colors[2];
IWICPalette *palette;
UINT actualcolors;
res = PaletteImpl_Create(&palette);
if (FAILED(res)) return res;
res = IWICBitmapSource_CopyPalette(This->source, palette);
if (SUCCEEDED(res))
res = IWICPalette_GetColors(palette, 2, colors, &actualcolors);
IWICPalette_Release(palette);
if (FAILED(res)) return res;
srcstride = (prc->Width+7)/8;
srcdatasize = srcstride * prc->Height;
srcdata = HeapAlloc(GetProcessHeap(), 0, srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
res = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(res))
{
srcrow = srcdata;
dstrow = pbBuffer;
for (y=0; y<prc->Height; y++) {
srcbyte=(const BYTE*)srcrow;
dstpixel=(DWORD*)dstrow;
for (x=0; x<prc->Width; x+=8) {
BYTE srcval;
srcval=*srcbyte++;
*dstpixel++ = colors[srcval>>7&1];
if (x+1 < prc->Width) *dstpixel++ = colors[srcval>>6&1];
if (x+2 < prc->Width) *dstpixel++ = colors[srcval>>5&1];
if (x+3 < prc->Width) *dstpixel++ = colors[srcval>>4&1];
if (x+4 < prc->Width) *dstpixel++ = colors[srcval>>3&1];
if (x+5 < prc->Width) *dstpixel++ = colors[srcval>>2&1];
if (x+6 < prc->Width) *dstpixel++ = colors[srcval>>1&1];
if (x+7 < prc->Width) *dstpixel++ = colors[srcval&1];
}
srcrow += srcstride;
dstrow += cbStride;
}
}
HeapFree(GetProcessHeap(), 0, srcdata);
return res;
}
return S_OK;
case format_16bppBGR555:
if (prc)
{
@ -202,6 +266,7 @@ static HRESULT copypixels_to_32bppBGR(struct FormatConverter *This, const WICRec
}
static const struct pixelformatinfo supported_formats[] = {
{format_1bppIndexed, &GUID_WICPixelFormat1bppIndexed, NULL},
{format_16bppBGR555, &GUID_WICPixelFormat16bppBGR555, NULL},
{format_16bppBGR565, &GUID_WICPixelFormat16bppBGR565, NULL},
{format_32bppBGR, &GUID_WICPixelFormat32bppBGR, copypixels_to_32bppBGR},

1
dlls/windowscodecs/regsvr.c
View File

@ -789,6 +789,7 @@ static struct regsvr_decoder const decoder_list[] = {
};
static GUID const * const converter_formats[] = {
&GUID_WICPixelFormat1bppIndexed,
&GUID_WICPixelFormat16bppBGR555,
&GUID_WICPixelFormat16bppBGR565,
&GUID_WICPixelFormat32bppBGR,