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windowscodecs: Create Image Descriptor metadata block for a GIF frame.

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This commit is contained in:
Dmitry Timoshkov 2012-09-13 10:26:04 +09:00 committed by Alexandre Julliard
parent fbd5a9aaff
commit 003c20467c
2 changed files with 150 additions and 18 deletions
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164
dlls/windowscodecs/gifformat.c
View File

@ -149,25 +149,27 @@ HRESULT LSDReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv)
return MetadataReader_Create(&LSDReader_Vtbl, pUnkOuter, iid, ppv);
}
#include "pshpack1.h"
struct image_descriptor
{
USHORT left;
USHORT top;
USHORT width;
USHORT height;
BYTE packed;
/* local_color_table_flag : 1;
* interlace_flag : 1;
* sort_flag : 1;
* reserved : 2;
* local_color_table_size : 3;
*/
};
#include "poppack.h"
static HRESULT load_IMD_metadata(IStream *stream, const GUID *vendor, DWORD options,
MetadataItem **items, DWORD *count)
{
#include "pshpack1.h"
struct image_descriptor
{
USHORT left;
USHORT top;
USHORT width;
USHORT height;
BYTE packed;
/* local_color_table_flag : 1;
* interlace_flag : 1;
* sort_flag : 1;
* reserved : 2;
* local_color_table_size : 3;
*/
} imd_data;
#include "poppack.h"
struct image_descriptor imd_data;
HRESULT hr;
ULONG bytesread, i;
MetadataItem *result;
@ -353,6 +355,7 @@ typedef struct {
typedef struct {
IWICBitmapFrameDecode IWICBitmapFrameDecode_iface;
IWICMetadataBlockReader IWICMetadataBlockReader_iface;
LONG ref;
SavedImage *frame;
GifDecoder *parent;
@ -373,6 +376,11 @@ static inline GifFrameDecode *impl_from_IWICBitmapFrameDecode(IWICBitmapFrameDec
return CONTAINING_RECORD(iface, GifFrameDecode, IWICBitmapFrameDecode_iface);
}
static inline GifFrameDecode *frame_from_IWICMetadataBlockReader(IWICMetadataBlockReader *iface)
{
return CONTAINING_RECORD(iface, GifFrameDecode, IWICMetadataBlockReader_iface);
}
static HRESULT WINAPI GifFrameDecode_QueryInterface(IWICBitmapFrameDecode *iface, REFIID iid,
void **ppv)
{
@ -387,6 +395,10 @@ static HRESULT WINAPI GifFrameDecode_QueryInterface(IWICBitmapFrameDecode *iface
{
*ppv = &This->IWICBitmapFrameDecode_iface;
}
else if (IsEqualIID(&IID_IWICMetadataBlockReader, iid))
{
*ppv = &This->IWICMetadataBlockReader_iface;
}
else
{
*ppv = NULL;
@ -604,6 +616,125 @@ static const IWICBitmapFrameDecodeVtbl GifFrameDecode_Vtbl = {
GifFrameDecode_GetThumbnail
};
static HRESULT WINAPI GifFrameDecode_Block_QueryInterface(IWICMetadataBlockReader *iface,
REFIID iid, void **ppv)
{
GifFrameDecode *This = frame_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_QueryInterface(&This->IWICBitmapFrameDecode_iface, iid, ppv);
}
static ULONG WINAPI GifFrameDecode_Block_AddRef(IWICMetadataBlockReader *iface)
{
GifFrameDecode *This = frame_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_AddRef(&This->IWICBitmapFrameDecode_iface);
}
static ULONG WINAPI GifFrameDecode_Block_Release(IWICMetadataBlockReader *iface)
{
GifFrameDecode *This = frame_from_IWICMetadataBlockReader(iface);
return IWICBitmapFrameDecode_Release(&This->IWICBitmapFrameDecode_iface);
}
static HRESULT WINAPI GifFrameDecode_Block_GetContainerFormat(IWICMetadataBlockReader *iface,
GUID *guid)
{
TRACE("(%p,%p)\n", iface, guid);
if (!guid) return E_INVALIDARG;
*guid = GUID_ContainerFormatGif;
return S_OK;
}
static HRESULT WINAPI GifFrameDecode_Block_GetCount(IWICMetadataBlockReader *iface,
UINT *count)
{
TRACE("%p,%p\n", iface, count);
if (!count) return E_INVALIDARG;
*count = 1;
return S_OK;
}
static HRESULT create_IMD_metadata_reader(GifFrameDecode *This, IWICMetadataReader **reader)
{
HRESULT hr;
IWICMetadataReader *metadata_reader;
IWICPersistStream *persist;
IStream *stream;
struct image_descriptor IMD_data;
/* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
hr = CoCreateInstance(&CLSID_WICIMDMetadataReader, 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;
}
/* recreate IMD structure from GIF decoder data */
IMD_data.left = This->frame->ImageDesc.Left;
IMD_data.top = This->frame->ImageDesc.Top;
IMD_data.width = This->frame->ImageDesc.Width;
IMD_data.height = This->frame->ImageDesc.Height;
IMD_data.packed = 0;
/* interlace_flag */
IMD_data.packed |= This->frame->ImageDesc.Interlace ? (1 << 6) : 0;
if (This->frame->ImageDesc.ColorMap)
{
/* local_color_table_flag */
IMD_data.packed |= 1 << 7;
/* local_color_table_size */
IMD_data.packed |= This->frame->ImageDesc.ColorMap->BitsPerPixel;
/* FIXME: sort_flag */
}
stream = create_stream(&IMD_data, sizeof(IMD_data));
IWICPersistStream_LoadEx(persist, stream, NULL, WICPersistOptionsDefault);
IStream_Release(stream);
IWICPersistStream_Release(persist);
*reader = metadata_reader;
return S_OK;
}
static HRESULT WINAPI GifFrameDecode_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
UINT index, IWICMetadataReader **reader)
{
GifFrameDecode *This = frame_from_IWICMetadataBlockReader(iface);
TRACE("(%p,%u,%p)\n", iface, index, reader);
if (!reader || index != 0) return E_INVALIDARG;
return create_IMD_metadata_reader(This, reader);
}
static HRESULT WINAPI GifFrameDecode_Block_GetEnumerator(IWICMetadataBlockReader *iface,
IEnumUnknown **enumerator)
{
FIXME("(%p,%p): stub\n", iface, enumerator);
return E_NOTIMPL;
}
static const IWICMetadataBlockReaderVtbl GifFrameDecode_BlockVtbl =
{
GifFrameDecode_Block_QueryInterface,
GifFrameDecode_Block_AddRef,
GifFrameDecode_Block_Release,
GifFrameDecode_Block_GetContainerFormat,
GifFrameDecode_Block_GetCount,
GifFrameDecode_Block_GetReaderByIndex,
GifFrameDecode_Block_GetEnumerator
};
static HRESULT WINAPI GifDecoder_QueryInterface(IWICBitmapDecoder *iface, REFIID iid,
void **ppv)
{
@ -824,6 +955,7 @@ static HRESULT WINAPI GifDecoder_GetFrame(IWICBitmapDecoder *iface,
if (!result) return E_OUTOFMEMORY;
result->IWICBitmapFrameDecode_iface.lpVtbl = &GifFrameDecode_Vtbl;
result->IWICMetadataBlockReader_iface.lpVtbl = &GifFrameDecode_BlockVtbl;
result->ref = 1;
result->frame = &This->gif->SavedImages[index];
IWICBitmapDecoder_AddRef(iface);

4
dlls/windowscodecs/tests/metadata.c
View File

@ -1088,7 +1088,6 @@ static void test_metadata_gif(void)
ok(hr == S_OK, "GetFrame error %#x\n", hr);
hr = IWICBitmapFrameDecode_QueryInterface(frame, &IID_IWICMetadataBlockReader, (void **)&blockreader);
todo_wine
ok(hr == S_OK || broken(hr == E_NOINTERFACE) /* before Win7 */, "QueryInterface error %#x\n", hr);
if (SUCCEEDED(hr))
@ -1190,7 +1189,6 @@ todo_wine
ok(hr == S_OK, "GetFrame error %#x\n", hr);
hr = IWICBitmapFrameDecode_QueryInterface(frame, &IID_IWICMetadataBlockReader, (void **)&blockreader);
todo_wine
ok(hr == S_OK || broken(hr == E_NOINTERFACE) /* before Win7 */, "QueryInterface error %#x\n", hr);
if (SUCCEEDED(hr))
@ -1208,6 +1206,7 @@ todo_wine
hr = IWICMetadataBlockReader_GetCount(blockreader, &count);
ok(hr == S_OK, "GetCount error %#x\n", hr);
todo_wine
ok(count == 2, "expected 2, got %u\n", count);
hr = IWICMetadataBlockReader_GetReaderByIndex(blockreader, 0, &reader);
@ -1229,6 +1228,7 @@ todo_wine
}
hr = IWICMetadataBlockReader_GetReaderByIndex(blockreader, 1, &reader);
todo_wine
ok(hr == S_OK, "GetReaderByIndex error %#x\n", hr);
if (SUCCEEDED(hr))