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windowscodecs: Implement IWICBitmapFrameDecode::GetColorContexts for PNG images.

This commit is contained in:
Hans Leidekker 2012-11-15 14:07:00 +01:00 committed by Alexandre Julliard
parent 96ebc618b5
commit cfb91803c2
1 changed files with 32 additions and 3 deletions
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35
dlls/windowscodecs/pngformat.c
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@ -166,6 +166,7 @@ MAKE_FUNCPTR(png_error);
MAKE_FUNCPTR(png_get_bit_depth);
MAKE_FUNCPTR(png_get_color_type);
MAKE_FUNCPTR(png_get_error_ptr);
MAKE_FUNCPTR(png_get_iCCP);
MAKE_FUNCPTR(png_get_image_height);
MAKE_FUNCPTR(png_get_image_width);
MAKE_FUNCPTR(png_get_io_ptr);
@ -213,6 +214,7 @@ static void *load_libpng(void)
LOAD_FUNCPTR(png_get_bit_depth);
LOAD_FUNCPTR(png_get_color_type);
LOAD_FUNCPTR(png_get_error_ptr);
LOAD_FUNCPTR(png_get_iCCP);
LOAD_FUNCPTR(png_get_image_height);
LOAD_FUNCPTR(png_get_image_width);
LOAD_FUNCPTR(png_get_io_ptr);
@ -624,7 +626,7 @@ static HRESULT WINAPI PngDecoder_GetPreview(IWICBitmapDecoder *iface,
static HRESULT WINAPI PngDecoder_GetColorContexts(IWICBitmapDecoder *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
FIXME("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
}
@ -844,8 +846,35 @@ static HRESULT WINAPI PngDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDec
static HRESULT WINAPI PngDecoder_Frame_GetColorContexts(IWICBitmapFrameDecode *iface,
UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
{
FIXME("(%p,%u,%p,%p): stub\n", iface, cCount, ppIColorContexts, pcActualCount);
return WINCODEC_ERR_UNSUPPORTEDOPERATION;
PngDecoder *This = impl_from_IWICBitmapFrameDecode(iface);
png_charp name, profile;
png_uint_32 len;
int compression_type;
HRESULT hr;
TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
EnterCriticalSection(&This->lock);
if (ppng_get_iCCP(This->png_ptr, This->info_ptr, &name, &compression_type, &profile, &len))
{
if (cCount && ppIColorContexts)
{
hr = IWICColorContext_InitializeFromMemory(*ppIColorContexts, (const BYTE *)profile, len);
if (FAILED(hr))
{
LeaveCriticalSection(&This->lock);
return hr;
}
}
*pcActualCount = 1;
}
else
*pcActualCount = 0;
LeaveCriticalSection(&This->lock);
return S_OK;
}
static HRESULT WINAPI PngDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,