windowscodecs: Implement GetFrameCount and GetFrame for the GIF decoder.
This commit is contained in:
Vincent Povirk
Alexandre Julliard
parent
e6eb982ca6
commit
45e9804a8e
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@ -42,6 +42,134 @@ typedef struct {
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GifFileType *gif;
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} GifDecoder;
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typedef struct {
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const IWICBitmapFrameDecodeVtbl *lpVtbl;
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LONG ref;
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SavedImage *frame;
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GifDecoder *parent;
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} GifFrameDecode;
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static HRESULT WINAPI GifFrameDecode_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
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void **ppv)
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{
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GifFrameDecode *This = (GifFrameDecode*)iface;
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TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
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if (!ppv) return E_INVALIDARG;
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if (IsEqualIID(&IID_IUnknown, iid) ||
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IsEqualIID(&IID_IWICBitmapSource, iid) ||
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IsEqualIID(&IID_IWICBitmapFrameDecode, iid))
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{
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*ppv = This;
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}
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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IUnknown_AddRef((IUnknown*)*ppv);
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return S_OK;
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}
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static ULONG WINAPI GifFrameDecode_AddRef(IWICBitmapFrameDecode *iface)
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{
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GifFrameDecode *This = (GifFrameDecode*)iface;
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p) refcount=%u\n", iface, ref);
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return ref;
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}
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static ULONG WINAPI GifFrameDecode_Release(IWICBitmapFrameDecode *iface)
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{
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GifFrameDecode *This = (GifFrameDecode*)iface;
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p) refcount=%u\n", iface, ref);
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if (ref == 0)
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{
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IUnknown_Release((IUnknown*)This->parent);
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HeapFree(GetProcessHeap(), 0, This);
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}
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return ref;
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}
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static HRESULT WINAPI GifFrameDecode_GetSize(IWICBitmapFrameDecode *iface,
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UINT *puiWidth, UINT *puiHeight)
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{
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FIXME("(%p,%p,%p): stub\n", iface, puiWidth, puiHeight);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI GifFrameDecode_GetPixelFormat(IWICBitmapFrameDecode *iface,
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WICPixelFormatGUID *pPixelFormat)
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{
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memcpy(pPixelFormat, &GUID_WICPixelFormat8bppIndexed, sizeof(GUID));
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return S_OK;
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}
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static HRESULT WINAPI GifFrameDecode_GetResolution(IWICBitmapFrameDecode *iface,
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double *pDpiX, double *pDpiY)
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{
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FIXME("(%p,%p,%p): stub\n", iface, pDpiX, pDpiY);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI GifFrameDecode_CopyPalette(IWICBitmapFrameDecode *iface,
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IWICPalette *pIPalette)
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{
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FIXME("(%p,%p): stub\n", iface, pIPalette);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI GifFrameDecode_CopyPixels(IWICBitmapFrameDecode *iface,
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const WICRect *prc, UINT cbStride, UINT cbBufferSize, BYTE *pbBuffer)
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{
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FIXME("(%p,%p,%u,%u,%p): stub\n", iface, prc, cbStride, cbBufferSize, pbBuffer);
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return E_NOTIMPL;
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}
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static HRESULT WINAPI GifFrameDecode_GetMetadataQueryReader(IWICBitmapFrameDecode *iface,
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IWICMetadataQueryReader **ppIMetadataQueryReader)
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{
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TRACE("(%p,%p)\n", iface, ppIMetadataQueryReader);
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return WINCODEC_ERR_UNSUPPORTEDOPERATION;
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}
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static HRESULT WINAPI GifFrameDecode_GetColorContexts(IWICBitmapFrameDecode *iface,
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UINT cCount, IWICColorContext **ppIColorContexts, UINT *pcActualCount)
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{
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TRACE("(%p,%u,%p,%p)\n", iface, cCount, ppIColorContexts, pcActualCount);
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return WINCODEC_ERR_UNSUPPORTEDOPERATION;
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}
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static HRESULT WINAPI GifFrameDecode_GetThumbnail(IWICBitmapFrameDecode *iface,
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IWICBitmapSource **ppIThumbnail)
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{
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TRACE("(%p,%p)\n", iface, ppIThumbnail);
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return WINCODEC_ERR_CODECNOTHUMBNAIL;
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}
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static const IWICBitmapFrameDecodeVtbl GifFrameDecode_Vtbl = {
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GifFrameDecode_QueryInterface,
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GifFrameDecode_AddRef,
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GifFrameDecode_Release,
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GifFrameDecode_GetSize,
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GifFrameDecode_GetPixelFormat,
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GifFrameDecode_GetResolution,
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GifFrameDecode_CopyPalette,
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GifFrameDecode_CopyPixels,
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GifFrameDecode_GetMetadataQueryReader,
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GifFrameDecode_GetColorContexts,
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GifFrameDecode_GetThumbnail
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};
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static HRESULT WINAPI GifDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
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void **ppv)
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{
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@ -199,15 +327,41 @@ static HRESULT WINAPI GifDecoder_GetThumbnail(IWICBitmapDecoder *iface,
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static HRESULT WINAPI GifDecoder_GetFrameCount(IWICBitmapDecoder *iface,
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UINT *pCount)
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{
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FIXME("(%p,%p): stub\n", iface, pCount);
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return E_NOTIMPL;
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GifDecoder *This = (GifDecoder*)iface;
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TRACE("(%p,%p)\n", iface, pCount);
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if (!This->initialized) return WINCODEC_ERR_NOTINITIALIZED;
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*pCount = This->gif->ImageCount;
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TRACE("<- %u\n", *pCount);
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return S_OK;
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}
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static HRESULT WINAPI GifDecoder_GetFrame(IWICBitmapDecoder *iface,
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UINT index, IWICBitmapFrameDecode **ppIBitmapFrame)
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{
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FIXME("(%p,%u,%p): stub\n", iface, index, ppIBitmapFrame);
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return E_NOTIMPL;
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GifDecoder *This = (GifDecoder*)iface;
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GifFrameDecode *result;
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TRACE("(%p,%u,%p)\n", iface, index, ppIBitmapFrame);
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if (!This->initialized) return WINCODEC_ERR_NOTINITIALIZED;
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if (index >= This->gif->ImageCount) return E_INVALIDARG;
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result = HeapAlloc(GetProcessHeap(), 0, sizeof(GifFrameDecode));
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if (!result) return E_OUTOFMEMORY;
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result->lpVtbl = &GifFrameDecode_Vtbl;
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result->ref = 1;
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result->frame = &This->gif->SavedImages[index];
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IWICBitmapDecoder_AddRef(iface);
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result->parent = This;
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*ppIBitmapFrame = (IWICBitmapFrameDecode*)result;
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return S_OK;
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}
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static const IWICBitmapDecoderVtbl GifDecoder_Vtbl = {
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