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windowscodecs: Add support for CMYK to BGR conversion. 

Signed-off-by: Dmitry Timoshkov <dmitry@baikal.ru>
Signed-off-by: Vincent Povirk <vincent@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Dmitry Timoshkov 2019-02-21 09:24:54 +03:00 committed by Alexandre Julliard
parent 048474b15e
commit 812d03129d
1 changed files with 43 additions and 0 deletions
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43
dlls/windowscodecs/converter.c
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@ -30,6 +30,7 @@
#include "wincodecs_private.h"
#include "wine/heap.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
@ -1121,6 +1122,48 @@ static HRESULT copypixels_to_24bppBGR(struct FormatConverter *This, const WICRec
}
return S_OK;
case format_32bppCMYK:
if (prc)
{
BYTE *srcdata;
UINT srcstride, srcdatasize;
srcstride = 4 * prc->Width;
srcdatasize = srcstride * prc->Height;
srcdata = heap_alloc(srcdatasize);
if (!srcdata) return E_OUTOFMEMORY;
hr = IWICBitmapSource_CopyPixels(This->source, prc, srcstride, srcdatasize, srcdata);
if (SUCCEEDED(hr))
{
INT x, y;
BYTE *src = srcdata, *dst = pbBuffer;
for (y = 0; y < prc->Height; y++)
{
BYTE *cmyk = src;
BYTE *bgr = dst;
for (x = 0; x < prc->Width; x++)
{
BYTE c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
bgr[0] = (255 - y) * (255 - k) / 255; /* B */
bgr[1] = (255 - m) * (255 - k) / 255; /* G */
bgr[2] = (255 - c) * (255 - k) / 255; /* R */
cmyk += 4;
bgr += 3;
}
src += srcstride;
dst += cbStride;
}
}
heap_free(srcdata);
return hr;
}
return S_OK;
default:
FIXME("Unimplemented conversion path!\n");
return WINCODEC_ERR_UNSUPPORTEDOPERATION;