[PATCH 6/7] windowscodecs/metadata: Make it possible to populate default items at creation time.

[Nikolay Sivov]

From: Nikolay Sivov

Signed-off-by: Nikolay Sivov 
---
 dlls/windowscodecs/metadatahandler.c   | 32 ++++++++++++++---
 dlls/windowscodecs/tests/metadata.c    | 48 ++++++++------------------
 dlls/windowscodecs/wincodecs_private.h |  1 +
 3 files changed, 44 insertions(+), 37 deletions(-)

diff --git a/dlls/windowscodecs/metadatahandler.c b/dlls/windowscodecs/metadatahandler.c
index ebb7a08b0b6..d087a0640d7 100644
--- a/dlls/windowscodecs/metadatahandler.c
+++ b/dlls/windowscodecs/metadatahandler.c
@@ -648,7 +648,7 @@ static const IWICStreamProviderVtbl MetadataHandler_StreamProvider_Vtbl =
 HRESULT MetadataReader_Create(const MetadataHandlerVtbl *vtable, REFIID iid, void** ppv)
 {
     MetadataHandler *This;
-    HRESULT hr;
+    HRESULT hr = S_OK;

TRACE("%s\n", debugstr_guid(vtable->clsid));

@@ -666,7 +666,11 @@ HRESULT MetadataReader_Create(const MetadataHandlerVtbl *vtable, REFIID iid, voi
     InitializeCriticalSectionEx(&This->lock, 0, RTL_CRITICAL_SECTION_FLAG_FORCE_DEBUG_INFO);
     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": MetadataHandler.lock");

-    hr = IWICMetadataWriter_QueryInterface(&This->IWICMetadataWriter_iface, iid, ppv);
+    if (This->vtable->fnCreate)
+        hr = This->vtable->fnCreate(This);
+
+    if (SUCCEEDED(hr))
+        hr = IWICMetadataWriter_QueryInterface(&This->IWICMetadataWriter_iface, iid, ppv);

IWICMetadataWriter_Release(&This->IWICMetadataWriter_iface);

@@ -916,10 +920,29 @@ static HRESULT LoadUnknownMetadata(MetadataHandler *handler, IStream *input, con
     return S_OK;
 }

+static HRESULT CreateUnknownHandler(MetadataHandler *handler)
+{
+    MetadataItem *item;
+
+    if (!(item = calloc(1, sizeof(*item))))
+        return E_OUTOFMEMORY;
+
+    PropVariantInit(&item->schema);
+    PropVariantInit(&item->id);
+    PropVariantInit(&item->value);
+    item->value.vt = VT_BLOB;
+
+    handler->items = item;
+    handler->item_count = 1;
+
+    return S_OK;
+}
+
 static const MetadataHandlerVtbl UnknownMetadataReader_Vtbl =
 {
     .clsid = &CLSID_WICUnknownMetadataReader,
-    .fnLoad = LoadUnknownMetadata
+    .fnLoad = LoadUnknownMetadata,
+    .fnCreate = CreateUnknownHandler,
 };

HRESULT UnknownMetadataReader_CreateInstance(REFIID iid, void** ppv)
@@ -931,7 +954,8 @@ static const MetadataHandlerVtbl UnknownMetadataWriter_Vtbl =
 {
     .flags = METADATAHANDLER_IS_WRITER | METADATAHANDLER_FIXED_ITEMS,
     .clsid = &CLSID_WICUnknownMetadataWriter,
-    .fnLoad = LoadUnknownMetadata
+    .fnLoad = LoadUnknownMetadata,
+    .fnCreate = CreateUnknownHandler,
 };

HRESULT UnknownMetadataWriter_CreateInstance(REFIID iid, void** ppv)
diff --git a/dlls/windowscodecs/tests/metadata.c b/dlls/windowscodecs/tests/metadata.c
index 602d2406be1..022c5b9008f 100644
--- a/dlls/windowscodecs/tests/metadata.c
+++ b/dlls/windowscodecs/tests/metadata.c
@@ -783,20 +783,15 @@ static void test_metadata_unknown(void)

hr = IWICMetadataReader_GetCount(reader, &count);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    todo_wine
     ok(count == 1, "Unexpected count %u.\n", count);

PropVariantInit(&value);
     hr = IWICMetadataReader_GetValueByIndex(reader, 0, NULL, NULL, &value);
-    todo_wine
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    if (hr == S_OK)
-    {
-        ok(value.vt == VT_BLOB, "Unexpected type %d.\n", value.vt);
-        ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
-        ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);
-        PropVariantClear(&value);
-    }
+    ok(value.vt == VT_BLOB, "Unexpected type %d.\n", value.vt);
+    ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
+    ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);
+    PropVariantClear(&value);

load_stream(reader, metadata_unknown, sizeof(metadata_unknown), WICPersistOptionDefault);

@@ -915,23 +910,18 @@ static void test_metadata_unknown(void)

hr = IWICMetadataWriter_GetCount(writer, &count);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    todo_wine
     ok(count == 1, "Unexpected count %u.\n", count);

PropVariantInit(&schema);
     PropVariantInit(&id);
     PropVariantInit(&value);
     hr = IWICMetadataWriter_GetValueByIndex(writer, 0, &schema, &id, &value);
-    todo_wine
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    if (hr == S_OK)
-    {
-        ok(schema.vt == VT_EMPTY, "Unexpected type %d.\n", schema.vt);
-        ok(id.vt == VT_EMPTY, "Unexpected type %d.\n", id.vt);
-        ok(value.vt == VT_BLOB, "Unexpected type %d.\n", value.vt);
-        ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
-        ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);
-    }
+    ok(schema.vt == VT_EMPTY, "Unexpected type %d.\n", schema.vt);
+    ok(id.vt == VT_EMPTY, "Unexpected type %d.\n", id.vt);
+    ok(value.vt == VT_BLOB, "Unexpected type %d.\n", value.vt);
+    ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
+    ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);

PropVariantInit(&schema);
     PropVariantInit(&value);
@@ -6779,26 +6769,18 @@ static void test_CreateQueryWriter(void)

PropVariantInit(&value);
     hr = IWICMetadataQueryWriter_GetMetadataByName(query_writer, L"/", &value);
-    todo_wine
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    if (hr == S_OK)
-    {
-        ok(value.vt == VT_BLOB, "Unexpected value type %u.\n", value.vt);
-        ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
-        ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);
-        PropVariantClear(&value);
-    }
+    ok(value.vt == VT_BLOB, "Unexpected value type %u.\n", value.vt);
+    ok(!value.blob.cbSize, "Unexpected size %lu.\n", value.blob.cbSize);
+    ok(!value.blob.pBlobData, "Unexpected data pointer %p.\n", value.blob.pBlobData);
+    PropVariantClear(&value);

hr = IWICMetadataQueryWriter_GetEnumerator(query_writer, &enum_string);
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
     hr = IEnumString_Next(enum_string, 1, &str, &fetched);
-    todo_wine
     ok(hr == S_OK, "Unexpected hr %#lx.\n", hr);
-    if (hr == S_OK)
-    {
-        ok(!wcscmp(str, L"/{}"), "Unexpected string %s.\n", wine_dbgstr_w(str));
-        CoTaskMemFree(str);
-    }
+    ok(!wcscmp(str, L"/{}"), "Unexpected string %s.\n", wine_dbgstr_w(str));
+    CoTaskMemFree(str);
     hr = IEnumString_Next(enum_string, 1, &str, &fetched);
     ok(hr == S_FALSE, "Unexpected hr %#lx.\n", hr);
     IEnumString_Release(enum_string);
diff --git a/dlls/windowscodecs/wincodecs_private.h b/dlls/windowscodecs/wincodecs_private.h
index 5cc86d5d663..690d5e34e58 100644
--- a/dlls/windowscodecs/wincodecs_private.h
+++ b/dlls/windowscodecs/wincodecs_private.h
@@ -213,6 +213,7 @@ typedef struct _MetadataHandlerVtbl
     const CLSID *clsid;
     HRESULT (*fnLoad)(MetadataHandler *handler, IStream *stream, const GUID *preferred_vendor,
         DWORD persist_options);
+    HRESULT (*fnCreate)(MetadataHandler *handler);
 } MetadataHandlerVtbl;

typedef struct MetadataHandler