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windowscodecs: Implement IWICImagingFactory::CreateDecoderFromStream.

This commit is contained in:
Vincent Povirk 2009-08-04 17:31:15 -05:00 committed by Alexandre Julliard
parent 9dd3c209c6
commit 219b8c64ac
1 changed files with 68 additions and 2 deletions
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70
dlls/windowscodecs/imgfactory.c
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@ -98,9 +98,75 @@ static HRESULT WINAPI ImagingFactory_CreateDecoderFromStream(
IWICImagingFactory *iface, IStream *pIStream, const GUID *pguidVendor,
WICDecodeOptions metadataOptions, IWICBitmapDecoder **ppIDecoder)
{
FIXME("(%p,%p,%s,%u,%p): stub\n", iface, pIStream, debugstr_guid(pguidVendor),
static int fixme=0;
IEnumUnknown *enumdecoders;
IUnknown *unkdecoderinfo;
IWICBitmapDecoderInfo *decoderinfo;
IWICBitmapDecoder *decoder=NULL;
HRESULT res=S_OK;
ULONG num_fetched;
BOOL matches;
TRACE("(%p,%p,%s,%u,%p)\n", iface, pIStream, debugstr_guid(pguidVendor),
metadataOptions, ppIDecoder);
return E_NOTIMPL;
if (pguidVendor && !fixme++)
FIXME("ignoring vendor GUID\n");
res = CreateComponentEnumerator(WICDecoder, WICComponentEnumerateDefault, &enumdecoders);
if (FAILED(res)) return res;
while (!decoder)
{
res = IEnumUnknown_Next(enumdecoders, 1, &unkdecoderinfo, &num_fetched);
if (res == S_OK)
{
res = IUnknown_QueryInterface(unkdecoderinfo, &IID_IWICBitmapDecoderInfo, (void**)&decoderinfo);
if (SUCCEEDED(res))
{
res = IWICBitmapDecoderInfo_MatchesPattern(decoderinfo, pIStream, &matches);
if (SUCCEEDED(res) && matches)
{
res = IWICBitmapDecoderInfo_CreateInstance(decoderinfo, &decoder);
/* FIXME: should use QueryCapability to choose a decoder */
if (SUCCEEDED(res))
{
res = IWICBitmapDecoder_Initialize(decoder, pIStream, metadataOptions);
if (FAILED(res))
{
IWICBitmapDecoder_Release(decoder);
decoder = NULL;
}
}
}
IWICBitmapDecoderInfo_Release(decoderinfo);
}
IUnknown_Release(unkdecoderinfo);
}
else
break;
}
IEnumUnknown_Release(enumdecoders);
if (decoder)
{
*ppIDecoder = decoder;
return S_OK;
}
else
{
*ppIDecoder = NULL;
return WINCODEC_ERR_COMPONENTNOTFOUND;
}
}
static HRESULT WINAPI ImagingFactory_CreateDecoderFromFileHandle(