windowscodecs: Add a stubbed out IWICMetadataBlockReader interface.

dlls/windowscodecs/metadatahandler.c

@@ -39,6 +39,7 @@ typedef struct MetadataHandler {
     IWICMetadataWriter IWICMetadataWriter_iface;
     LONG ref;
     IWICPersistStream IWICPersistStream_iface;
+    IWICMetadataBlockReader IWICMetadataBlockReader_iface;
     const MetadataHandlerVtbl *vtable;
     MetadataItem *items;
     DWORD item_count;
@@ -55,6 +56,11 @@ static inline MetadataHandler *impl_from_IWICPersistStream(IWICPersistStream *if
     return CONTAINING_RECORD(iface, MetadataHandler, IWICPersistStream_iface);
 }
 
+static inline MetadataHandler *impl_from_IWICMetadataBlockReader(IWICMetadataBlockReader *iface)
+{
+    return CONTAINING_RECORD(iface, MetadataHandler, IWICMetadataBlockReader_iface);
+}
+
 static void MetadataHandler_FreeItems(MetadataHandler *This)
 {
     int i;
@@ -92,6 +98,10 @@ static HRESULT WINAPI MetadataHandler_QueryInterface(IWICMetadataWriter *iface,
     {
         *ppv = &This->IWICPersistStream_iface;
     }
+    else if (IsEqualIID(&IID_IWICMetadataBlockReader, iid))
+    {
+        *ppv = &This->IWICMetadataBlockReader_iface;
+    }
     else
     {
         *ppv = NULL;
@@ -317,6 +327,64 @@ static const IWICPersistStreamVtbl MetadataHandler_PersistStream_Vtbl = {
     MetadataHandler_SaveEx
 };
 
+static HRESULT WINAPI MetadataHandler_MetadataBlockReader_QueryInterface(IWICMetadataBlockReader *iface,
+    REFIID iid, void **ppv)
+{
+    MetadataHandler *This = impl_from_IWICMetadataBlockReader(iface);
+    return IWICMetadataWriter_QueryInterface(&This->IWICMetadataWriter_iface, iid, ppv);
+}
+
+static ULONG WINAPI MetadataHandler_MetadataBlockReader_AddRef(IWICMetadataBlockReader *iface)
+{
+    MetadataHandler *This = impl_from_IWICMetadataBlockReader(iface);
+    return IWICMetadataWriter_AddRef(&This->IWICMetadataWriter_iface);
+}
+
+static ULONG WINAPI MetadataHandler_MetadataBlockReader_Release(IWICMetadataBlockReader *iface)
+{
+    MetadataHandler *This = impl_from_IWICMetadataBlockReader(iface);
+    return IWICMetadataWriter_Release(&This->IWICMetadataWriter_iface);
+}
+
+static HRESULT WINAPI MetadataHandler_MetadataBlockReader_GetContainerFormat(
+        IWICMetadataBlockReader *iface, GUID *guid)
+{
+    FIXME("(%p,%p): stub\n", iface, guid);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI MetadataHandler_MetadataBlockReader_GetCount(
+        IWICMetadataBlockReader *iface, UINT *count)
+{
+    FIXME("(%p,%p): stub\n", iface, count);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI MetadataHandler_MetadataBlockReader_GetReaderByIndex(
+        IWICMetadataBlockReader *iface, UINT index, IWICMetadataReader **reader)
+{
+    FIXME("(%p,%u,%p): stub\n", iface, index, reader);
+    return E_NOTIMPL;
+}
+
+static HRESULT WINAPI MetadataHandler_MetadataBlockReader_GetEnumerator(
+        IWICMetadataBlockReader *iface, IEnumUnknown **enum_metadata)
+{
+    FIXME("(%p,%p): stub\n", iface, enum_metadata);
+    return E_NOTIMPL;
+}
+
+static const IWICMetadataBlockReaderVtbl MetadataHandler_MetadataBlockReader_Vtbl =
+{
+    MetadataHandler_MetadataBlockReader_QueryInterface,
+    MetadataHandler_MetadataBlockReader_AddRef,
+    MetadataHandler_MetadataBlockReader_Release,
+    MetadataHandler_MetadataBlockReader_GetContainerFormat,
+    MetadataHandler_MetadataBlockReader_GetCount,
+    MetadataHandler_MetadataBlockReader_GetReaderByIndex,
+    MetadataHandler_MetadataBlockReader_GetEnumerator
+};
+
 HRESULT MetadataReader_Create(const MetadataHandlerVtbl *vtable, IUnknown *pUnkOuter, REFIID iid, void** ppv)
 {
     MetadataHandler *This;
@@ -333,6 +401,7 @@ HRESULT MetadataReader_Create(const MetadataHandlerVtbl *vtable, IUnknown *pUnkO
 
     This->IWICMetadataWriter_iface.lpVtbl = &MetadataHandler_Vtbl;
     This->IWICPersistStream_iface.lpVtbl = &MetadataHandler_PersistStream_Vtbl;
+    This->IWICMetadataBlockReader_iface.lpVtbl = &MetadataHandler_MetadataBlockReader_Vtbl;
     This->ref = 1;
     This->vtable = vtable;
     This->items = NULL;