windowscodecs: Implement GetFrame for the PNG decoder.

This commit is contained in:
Vincent Povirk 2009-08-18 17:09:03 -05:00 committed by Alexandre Julliard
parent 7d74dba5b8
commit b077f0653c
1 changed files with 124 additions and 2 deletions
dlls/windowscodecs

View File

@ -92,6 +92,7 @@ static void *load_libpng(void)
typedef struct {
const IWICBitmapDecoderVtbl *lpVtbl;
const IWICBitmapFrameDecodeVtbl *lpFrameVtbl;
LONG ref;
png_structp png_ptr;
png_infop info_ptr;
@ -104,6 +105,13 @@ typedef struct {
BYTE *image_bits;
} PngDecoder;
static inline PngDecoder *impl_from_frame(IWICBitmapFrameDecode *iface)
{
return CONTAINING_RECORD(iface, PngDecoder, lpFrameVtbl);
}
static const IWICBitmapFrameDecodeVtbl PngDecoder_FrameVtbl;
static HRESULT WINAPI PngDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
void **ppv)
{
@ -381,8 +389,18 @@ static HRESULT WINAPI PngDecoder_GetFrameCount(IWICBitmapDecoder *iface,
static HRESULT WINAPI PngDecoder_GetFrame(IWICBitmapDecoder *iface,
UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
{
FIXME("(%p,%u,%p): stub\n", iface, index, ppIBitmapFrame);
return E_NOTIMPL;
PngDecoder *This = (PngDecoder*)iface;
TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
if (!This->initialized) return WINCODEC_ERR_NOTINITIALIZED;
if (index != 0) return E_INVALIDARG;
IWICBitmapDecoder_AddRef(iface);
*ppIBitmapFrame = (void*)(&This->lpFrameVtbl);
return S_OK;
}
static const IWICBitmapDecoderVtbl PngDecoder_Vtbl = {
@ -402,6 +420,109 @@ static const IWICBitmapDecoderVtbl PngDecoder_Vtbl = {
PngDecoder_GetFrame
};
static HRESULT WINAPI PngDecoder_Frame_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
void **ppv)
{
if (!ppv) return E_INVALIDARG;
if (IsEqualIID(&IID_IUnknown, iid) ||
IsEqualIID(&IID_IWICBitmapSource, iid) ||
IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
{
*ppv = iface;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
IUnknown_AddRef((IUnknown*)*ppv);
return S_OK;
}
static ULONG WINAPI PngDecoder_Frame_AddRef(IWICBitmapFrameDecode *iface)
{
PngDecoder *This = impl_from_frame(iface);
return IUnknown_AddRef((IUnknown*)This);
}
static ULONG WINAPI PngDecoder_Frame_Release(IWICBitmapFrameDecode *iface)
{
PngDecoder *This = impl_from_frame(iface);
return IUnknown_Release((IUnknown*)This);
}
static HRESULT WINAPI PngDecoder_Frame_GetSize(IWICBitmapFrameDecode *iface,
UINT *puiWidth, UINT *puiHeight)
{
FIXME("(%p,%p,%p): stub\n", iface, puiWidth, puiHeight);
return E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_GetPixelFormat(IWICBitmapFrameDecode *iface,
WICPixelFormatGUID *pPixelFormat)
{
FIXME("(%p,%p): stub\n", iface, pPixelFormat);
return E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_GetResolution(IWICBitmapFrameDecode *iface,
double *pDpiX, double *pDpiY)
{
FIXME("(%p,%p,%p): stub\n", iface, pDpiX, pDpiY);
return E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_CopyPalette(IWICBitmapFrameDecode *iface,
IWICPalette *pIPalette)
{
FIXME("(%p,%p): stub\n", iface, pIPalette);
return E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_CopyPixels(IWICBitmapFrameDecode *iface,
const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
{
FIXME("(%p,%p,%u,%u,%p): stub\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
return E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
IWICMetadataQueryReader **ppIMetadataQueryReader)
{
FIXME("(%p,%p): stub\n", iface, ppIMetadataQueryReader);
return E_NOTIMPL;
}
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 E_NOTIMPL;
}
static HRESULT WINAPI PngDecoder_Frame_GetThumbnail(IWICBitmapFrameDecode *iface,
IWICBitmapSource **ppIThumbnail)
{
FIXME("(%p,%p): stub\n", iface, ppIThumbnail);
return E_NOTIMPL;
}
static const IWICBitmapFrameDecodeVtbl PngDecoder_FrameVtbl = {
PngDecoder_Frame_QueryInterface,
PngDecoder_Frame_AddRef,
PngDecoder_Frame_Release,
PngDecoder_Frame_GetSize,
PngDecoder_Frame_GetPixelFormat,
PngDecoder_Frame_GetResolution,
PngDecoder_Frame_CopyPalette,
PngDecoder_Frame_CopyPixels,
PngDecoder_Frame_GetMetadataQueryReader,
PngDecoder_Frame_GetColorContexts,
PngDecoder_Frame_GetThumbnail
};
HRESULT PngDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
{
PngDecoder *This;
@ -423,6 +544,7 @@ HRESULT PngDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
if (!This) return E_OUTOFMEMORY;
This->lpVtbl = &PngDecoder_Vtbl;
This->lpFrameVtbl = &PngDecoder_FrameVtbl;
This->ref = 1;
This->png_ptr = NULL;
This->info_ptr = NULL;