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windowscodecs: Create frame metadata readers from GIF decoder data.

This commit is contained in:
Dmitry Timoshkov 2012-09-18 13:01:27 +09:00 committed by Alexandre Julliard
parent 609b9a4da8
commit a0ca998e08
2 changed files with 70 additions and 97 deletions
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162
dlls/windowscodecs/gifformat.c
View File

@ -547,6 +547,37 @@ static IStream *create_stream(const void *data, int data_size)
return FAILED(hr) ? NULL : stream;
}
static HRESULT create_metadata_reader(const void *data, int data_size,
const CLSID *clsid, IWICMetadataReader **reader)
{
HRESULT hr;
IWICMetadataReader *metadata_reader;
IWICPersistStream *persist;
IStream *stream;
/* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
hr = CoCreateInstance(clsid, 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;
}
stream = create_stream(data, data_size);
IWICPersistStream_LoadEx(persist, stream, NULL, WICPersistOptionsDefault);
IStream_Release(stream);
IWICPersistStream_Release(persist);
*reader = metadata_reader;
return S_OK;
}
typedef struct {
IWICBitmapDecoder IWICBitmapDecoder_iface;
IWICMetadataBlockReader IWICMetadataBlockReader_iface;
@ -850,19 +881,6 @@ static HRESULT WINAPI GifFrameDecode_Block_GetContainerFormat(IWICMetadataBlockR
return S_OK;
}
static const void *get_GCE_data(GifFrameDecode *This)
{
int i;
for (i = 0; i < This->frame->Extensions.ExtensionBlockCount; i++)
{
if (This->frame->Extensions.ExtensionBlocks[i].Function == GRAPHICS_EXT_FUNC_CODE &&
This->frame->Extensions.ExtensionBlocks[i].ByteCount == 8)
return This->frame->Extensions.ExtensionBlocks[i].Bytes + 3;
}
return NULL;
}
static HRESULT WINAPI GifFrameDecode_Block_GetCount(IWICMetadataBlockReader *iface,
UINT *count)
{
@ -872,8 +890,7 @@ static HRESULT WINAPI GifFrameDecode_Block_GetCount(IWICMetadataBlockReader *ifa
if (!count) return E_INVALIDARG;
*count = 1;
if (get_GCE_data(This)) *count += 1;
*count = This->frame->Extensions.ExtensionBlockCount + 1;
return S_OK;
}
@ -926,64 +943,56 @@ static HRESULT create_IMD_metadata_reader(GifFrameDecode *This, IWICMetadataRead
return S_OK;
}
static HRESULT create_GCE_metadata_reader(const void *GCE_data, IWICMetadataReader **reader)
{
HRESULT hr;
IWICMetadataReader *metadata_reader;
IWICPersistStream *persist;
IStream *stream;
/* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
hr = CoCreateInstance(&CLSID_WICGCEMetadataReader, 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;
}
stream = create_stream(GCE_data, 4);
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);
UINT block_count = 1;
const void *GCE_data;
int i, gce_index = -1, gce_skipped = 0;
TRACE("(%p,%u,%p)\n", iface, index, reader);
GCE_data = get_GCE_data(This);
if (GCE_data) block_count++;
/* FIXME: add support for Application Extension metadata block
APE_data = get_APE_data(This);
if (APE_data) block_count++;
*/
if (!reader || index >= block_count) return E_INVALIDARG;
if (!reader) return E_INVALIDARG;
if (index == 0)
return create_IMD_metadata_reader(This, reader);
if (index == 1 && GCE_data)
return create_GCE_metadata_reader(GCE_data, reader);
if (index >= This->frame->Extensions.ExtensionBlockCount + 1)
return E_INVALIDARG;
/* FIXME: add support for Application Extension metadata block
if (APE_data)
return create_APE_metadata_reader(APE_data, reader);
*/
return E_INVALIDARG;
for (i = 0; i < This->frame->Extensions.ExtensionBlockCount; i++)
{
const CLSID *clsid;
const void *data;
int data_size;
if (index != i + 1 - gce_skipped) continue;
if (This->frame->Extensions.ExtensionBlocks[i].Function == GRAPHICS_EXT_FUNC_CODE)
{
gce_index = i;
gce_skipped = 1;
continue;
}
else if (This->frame->Extensions.ExtensionBlocks[i].Function == COMMENT_EXT_FUNC_CODE)
{
clsid = &CLSID_WICGifCommentMetadataReader;
data = This->frame->Extensions.ExtensionBlocks[i].Bytes;
data_size = This->frame->Extensions.ExtensionBlocks[i].ByteCount;
}
else
{
clsid = &CLSID_WICUnknownMetadataReader;
data = This->frame->Extensions.ExtensionBlocks[i].Bytes;
data_size = This->frame->Extensions.ExtensionBlocks[i].ByteCount;
}
return create_metadata_reader(data, data_size, clsid, reader);
}
if (gce_index == -1) return E_INVALIDARG;
return create_metadata_reader(This->frame->Extensions.ExtensionBlocks[gce_index].Bytes + 3,
This->frame->Extensions.ExtensionBlocks[gce_index].ByteCount - 4,
&CLSID_WICGCEMetadataReader, reader);
}
static HRESULT WINAPI GifFrameDecode_Block_GetEnumerator(IWICMetadataBlockReader *iface,
@ -1295,37 +1304,6 @@ static HRESULT WINAPI GifDecoder_Block_GetCount(IWICMetadataBlockReader *iface,
return S_OK;
}
static HRESULT create_metadata_reader(const void *data, int data_size,
const CLSID *clsid, IWICMetadataReader **reader)
{
HRESULT hr;
IWICMetadataReader *metadata_reader;
IWICPersistStream *persist;
IStream *stream;
/* FIXME: Use IWICComponentFactory_CreateMetadataReader once it's implemented */
hr = CoCreateInstance(clsid, 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;
}
stream = create_stream(data, data_size);
IWICPersistStream_LoadEx(persist, stream, NULL, WICPersistOptionsDefault);
IStream_Release(stream);
IWICPersistStream_Release(persist);
*reader = metadata_reader;
return S_OK;
}
static HRESULT WINAPI GifDecoder_Block_GetReaderByIndex(IWICMetadataBlockReader *iface,
UINT index, IWICMetadataReader **reader)
{

5
dlls/windowscodecs/tests/metadata.c
View File

@ -1306,7 +1306,6 @@ static void test_metadata_gif(void)
hr = IWICMetadataBlockReader_GetCount(blockreader, &count);
ok(hr == S_OK, "GetCount error %#x\n", hr);
todo_wine
ok(count == 4, "expected 4, got %u\n", count);
hr = IWICMetadataBlockReader_GetReaderByIndex(blockreader, 0, &reader);
@ -1333,13 +1332,11 @@ todo_wine
if (SUCCEEDED(hr))
{
hr = IWICMetadataReader_GetMetadataFormat(reader, &format);
todo_wine
ok(IsEqualGUID(&format, &GUID_MetadataFormatGifComment), /* Comment Extension */
"wrong container format %s\n", debugstr_guid(&format));
hr = IWICMetadataReader_GetCount(reader, &count);
ok(hr == S_OK, "GetCount error %#x\n", hr);
todo_wine
ok(count == sizeof(animated_gif_comment_2)/sizeof(animated_gif_comment_2[0]), "unexpected count %u\n", count);
if (count == 1)
@ -1349,7 +1346,6 @@ todo_wine
}
hr = IWICMetadataBlockReader_GetReaderByIndex(blockreader, 2, &reader);
todo_wine
ok(hr == S_OK, "GetReaderByIndex error %#x\n", hr);
if (SUCCEEDED(hr))
@ -1368,7 +1364,6 @@ todo_wine
}
hr = IWICMetadataBlockReader_GetReaderByIndex(blockreader, 3, &reader);
todo_wine
ok(hr == S_OK, "GetReaderByIndex error %#x\n", hr);
if (SUCCEEDED(hr))