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windowscodecs: Partially implement IWICBitmapFlipRotator_CopyPixels.

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This commit is contained in:
Vincent Povirk 2010-04-27 13:15:33 -05:00 committed by Alexandre Julliard
parent 0e992fccc5
commit 4f4812b447
1 changed files with 40 additions and 2 deletions
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42
dlls/windowscodecs/fliprotate.c
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@ -135,9 +135,47 @@ static HRESULT WINAPI FlipRotator_CopyPalette(IWICBitmapFlipRotator *iface,
static HRESULT WINAPI FlipRotator_CopyPixels(IWICBitmapFlipRotator *iface,
const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
FIXME("(%p,%p,%u,%u,%p): stub\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
FlipRotator *This = (FlipRotator*)iface;
HRESULT hr;
UINT y;
UINT srcy, srcwidth, srcheight;
WICRect rc;
return E_NOTIMPL;
TRACE("(%p,%p,%u,%u,%p)\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
if (!This->source) return WINCODEC_ERR_WRONGSTATE;
if (This->swap_xy || This->flip_x)
{
/* This requires knowledge of the pixel format. */
FIXME("flipping x and rotating are not implemented\n");
return E_NOTIMPL;
}
hr = IWICBitmapSource_GetSize(This->source, &srcwidth, &srcheight);
if (FAILED(hr)) return hr;
for (y=prc->Y; y - prc->Y < prc->Height; y++)
{
if (This->flip_y)
srcy = srcheight - 1 - y;
else
srcy = y;
rc.X = prc->X;
rc.Y = srcy;
rc.Width = prc->Width;
rc.Height = 1;
hr = IWICBitmapSource_CopyPixels(This->source, &rc, cbStride, cbStride,
pbBuffer);
if (FAILED(hr)) break;
pbBuffer += cbStride;
}
return hr;
}
static HRESULT WINAPI FlipRotator_Initialize(IWICBitmapFlipRotator *iface,