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windowscodecs: Implement Initialize for the ICO decoder.

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This commit is contained in:
Vincent Povirk 2009-08-20 09:50:06 -05:00 committed by Alexandre Julliard
parent 2ca8b9fd8d
commit dd5c5b8277
1 changed files with 29 additions and 2 deletions
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31
dlls/windowscodecs/icoformat.c
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@ -58,6 +58,9 @@ typedef struct
typedef struct {
const IWICBitmapDecoderVtbl *lpVtbl;
LONG ref;
BOOL initialized;
IStream *stream;
ICONHEADER header;
} IcoDecoder;
static HRESULT WINAPI IcoDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
@ -101,6 +104,7 @@ static ULONG WINAPI IcoDecoder_Release(IWICBitmapDecoder *iface)
if (ref == 0)
{
if (This->stream) IStream_Release(This->stream);
HeapFree(GetProcessHeap(), 0, This);
}
@ -117,8 +121,29 @@ static HRESULT WINAPI IcoDecoder_QueryCapability(IWICBitmapDecoder *iface, IStre
static HRESULT WINAPI IcoDecoder_Initialize(IWICBitmapDecoder *iface, IStream *pIStream,
WICDecodeOptions cacheOptions)
{
FIXME("(%p,%p,%x): stub\n", iface, pIStream, cacheOptions);
return E_NOTIMPL;
IcoDecoder *This = (IcoDecoder*)iface;
LARGE_INTEGER seek;
HRESULT hr;
ULONG bytesread;
TRACE("(%p,%p,%x)\n", iface, pIStream, cacheOptions);
if (This->initialized) return WINCODEC_ERR_WRONGSTATE;
seek.QuadPart = 0;
hr = IStream_Seek(pIStream, seek, STREAM_SEEK_SET, NULL);
if (FAILED(hr)) return hr;
hr = IStream_Read(pIStream, &This->header, sizeof(ICONHEADER), &bytesread);
if (FAILED(hr)) return hr;
if (bytesread != sizeof(ICONHEADER) ||
This->header.idReserved != 0 ||
This->header.idType != 1) return E_FAIL;
This->initialized = TRUE;
This->stream = pIStream;
IStream_AddRef(pIStream);
return S_OK;
}
static HRESULT WINAPI IcoDecoder_GetContainerFormat(IWICBitmapDecoder *iface,
@ -217,6 +242,8 @@ HRESULT IcoDecoder_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void** ppv)
This->lpVtbl = &IcoDecoder_Vtbl;
This->ref = 1;
This->stream = NULL;
This->initialized = FALSE;
ret = IUnknown_QueryInterface((IUnknown*)This, iid, ppv);
IUnknown_Release((IUnknown*)This);