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windowscodecs: Create a IWICMetadataReader for a TIFF frame.

oldstable
Dmitry Timoshkov 2012-06-19 11:40:10 +09:00 committed by Alexandre Julliard
parent a02ad10f99
commit 0a8be86277
1 changed files with 69 additions and 6 deletions
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75
dlls/windowscodecs/tiffformat.c
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@ -58,9 +58,10 @@ static void *libtiff_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(TIFFClientOpen);
MAKE_FUNCPTR(TIFFClose);
MAKE_FUNCPTR(TIFFNumberOfDirectories);
MAKE_FUNCPTR(TIFFCurrentDirOffset);
MAKE_FUNCPTR(TIFFGetField);
MAKE_FUNCPTR(TIFFIsByteSwapped);
MAKE_FUNCPTR(TIFFNumberOfDirectories);
MAKE_FUNCPTR(TIFFReadDirectory);
MAKE_FUNCPTR(TIFFReadEncodedStrip);
MAKE_FUNCPTR(TIFFReadEncodedTile);
@ -89,9 +90,10 @@ static void *load_libtiff(void)
}
LOAD_FUNCPTR(TIFFClientOpen);
LOAD_FUNCPTR(TIFFClose);
LOAD_FUNCPTR(TIFFNumberOfDirectories);
LOAD_FUNCPTR(TIFFCurrentDirOffset);
LOAD_FUNCPTR(TIFFGetField);
LOAD_FUNCPTR(TIFFIsByteSwapped);
LOAD_FUNCPTR(TIFFNumberOfDirectories);
LOAD_FUNCPTR(TIFFReadDirectory);
LOAD_FUNCPTR(TIFFReadEncodedStrip);
LOAD_FUNCPTR(TIFFReadEncodedTile);
@ -1133,15 +1135,76 @@ static HRESULT WINAPI TiffFrameDecode_Block_GetContainerFormat(IWICMetadataBlock
static HRESULT WINAPI TiffFrameDecode_Block_GetCount(IWICMetadataBlockReader *iface,
UINT *count)
{
FIXME("(%p,%p): stub\n", iface, count);
return E_NOTIMPL;
TRACE("%p,%p\n", iface, count);
if (!count) return E_INVALIDARG;
*count = 1;
return S_OK;
}
static HRESULT create_metadata_reader(TiffFrameDecode *This, IWICMetadataReader **reader)
{
HRESULT hr;
LARGE_INTEGER dir_offset;
IWICMetadataReader *metadata_reader;
IWICPersistStream *persist;
/* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
hr = CoCreateInstance(&CLSID_WICIfdMetadataReader, NULL, CLSCTX_INPROC_SERVER,
&IID_IWICMetadataReader, (void **)&metadata_reader);
if (FAILED(hr)) return hr;
hr = IWICMetadataReader_QueryInterface(metadata_reader, &IID_IWICPersistStream, (void **)&persist);
if (FAILED(hr))
{
IWICMetadataReader_Release(metadata_reader);
return hr;
}
EnterCriticalSection(&This->parent->lock);
dir_offset.QuadPart = pTIFFCurrentDirOffset(This->parent->tiff);
hr = IStream_Seek(This->parent->stream, dir_offset, STREAM_SEEK_SET, NULL);
if (SUCCEEDED(hr))
{
BOOL byte_swapped = pTIFFIsByteSwapped(This->parent->tiff);
#ifdef WORDS_BIGENDIAN
DWORD persist_options = byte_swapped ? WICPersistOptionsLittleEndian : WICPersistOptionsBigEndian;
#else
DWORD persist_options = byte_swapped ? WICPersistOptionsBigEndian : WICPersistOptionsLittleEndian;
#endif
persist_options |= WICPersistOptionsNoCacheStream;
hr = IWICPersistStream_LoadEx(persist, This->parent->stream, NULL, persist_options);
if (FAILED(hr))
ERR("IWICPersistStream_LoadEx error %#x\n", hr);
}
LeaveCriticalSection(&This->parent->lock);
IWICPersistStream_Release(persist);
if (FAILED(hr))
{
IWICMetadataReader_Release(metadata_reader);
return hr;
}
*reader = metadata_reader;
return S_OK;
}
static HRESULT WINAPI TiffFrameDecode_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
UINT index, IWICMetadataReader **reader)
{
FIXME("(%p,%u,%p): stub\n", iface, index, reader);
return E_NOTIMPL;
TiffFrameDecode *This = impl_from_IWICMetadataBlockReader(iface);
TRACE("(%p,%u,%p)\n", iface, index, reader);
if (!reader || index != 0) return E_INVALIDARG;
return create_metadata_reader(This, reader);
}
static HRESULT WINAPI TiffFrameDecode_Block_GetEnumerator(IWICMetadataBlockReader *iface,