[PATCH v2 6/8] mfplat: Implement IMFAttributes::GetItemByIndex().

[Jactry Zeng]

Signed-off-by: Jactry Zeng 
---
 dlls/mfplat/main.c         | 16 ++++++++++++++--
 dlls/mfplat/tests/mfplat.c | 15 +++++++++------
 2 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/dlls/mfplat/main.c b/dlls/mfplat/main.c
index f897325502..06a49b237f 100644
--- a/dlls/mfplat/main.c
+++ b/dlls/mfplat/main.c
@@ -903,9 +903,21 @@ static HRESULT WINAPI mfattributes_GetItemByIndex(IMFAttributes *iface, UINT32 i
 {
     mfattributes *This = impl_from_IMFAttributes(iface);

-    FIXME("%p, %d, %p, %p\n", This, index, key, value);
+    TRACE("(%p, %d, %p, %p)\n", This, index, key, value);

-    return E_NOTIMPL;
+    EnterCriticalSection(&This->lock);
+
+    if(index >= This->count)
+    {
+        LeaveCriticalSection(&This->lock);
+        return E_INVALIDARG;
+    }
+    *key = This->attributes[This->count - index - 1]->key;
+    PropVariantCopy(value, &This->attributes[This->count - index - 1]->value);
+
+    LeaveCriticalSection(&This->lock);
+
+    return S_OK;
 }

static HRESULT WINAPI mfattributes_CopyAllItems(IMFAttributes *iface, IMFAttributes *dest)
diff --git a/dlls/mfplat/tests/mfplat.c b/dlls/mfplat/tests/mfplat.c
index 5dcb641486..7f7f413096 100644
--- a/dlls/mfplat/tests/mfplat.c
+++ b/dlls/mfplat/tests/mfplat.c
@@ -765,21 +765,24 @@ static void test_IMFAttributes_item(void)
     hr = IMFAttributes_DeleteItem(attributes, &DUMMY_GUID2);
     ok(hr == S_OK, "IMFAttributes_DeleteItem failed: 0x%08x.\n", hr);
     hr = IMFAttributes_GetItemByIndex(attributes, 0, &key, &ret_propvar);
-    todo_wine ok(hr == S_OK, "IMFAttributes_GetItemByIndex failed: 0x%08x.\n", hr);
-    todo_wine ok(!PropVariantCompareEx(&propvar, &ret_propvar, 0, 0), "got wrong property.\n");
-    todo_wine ok(IsEqualIID(&key, &DUMMY_GUID3), "got wrong key: %s.\n", wine_dbgstr_guid(&key));
+    ok(hr == S_OK, "IMFAttributes_GetItemByIndex failed: 0x%08x.\n", hr);
+    ok(!PropVariantCompareEx(&propvar, &ret_propvar, 0, 0), "got wrong property.\n");
+    ok(IsEqualIID(&key, &DUMMY_GUID3), "got wrong key: %s.\n", wine_dbgstr_guid(&key));
     PropVariantClear(&ret_propvar);
     PropVariantClear(&propvar);
     propvar.vt = MF_ATTRIBUTE_UINT64;
     U(propvar).uhVal.QuadPart = 65536;
     hr = IMFAttributes_GetItemByIndex(attributes, 1, &key, &ret_propvar);
-    todo_wine ok(hr == S_OK, "IMFAttributes_GetItemByIndex failed: 0x%08x.\n", hr);
-    todo_wine ok(!PropVariantCompareEx(&propvar, &ret_propvar, 0, 0), "got wrong property.\n");
-    todo_wine ok(IsEqualIID(&key, &DUMMY_GUID1), "got wrong key: %s.\n", wine_dbgstr_guid(&key));
+    ok(hr == S_OK, "IMFAttributes_GetItemByIndex failed: 0x%08x.\n", hr);
+    ok(!PropVariantCompareEx(&propvar, &ret_propvar, 0, 0), "got wrong property.\n");
+    ok(IsEqualIID(&key, &DUMMY_GUID1), "got wrong key: %s.\n", wine_dbgstr_guid(&key));

hr = IMFAttributes_DeleteItem(attributes, &DUMMY_GUID2);
     ok(hr == S_OK, "IMFAttributes_DeleteItem failed: 0x%08x.\n", hr);

+    hr = IMFAttributes_GetItemByIndex(attributes, 2, &key, &ret_propvar);
+    ok(hr == E_INVALIDARG, "IMFAttributes_GetItemByIndex should fail: 0x%08x.\n", hr);
+
     IMFAttributes_Release(attributes);
 }