winegstreamer: Implement GetOutputSizeInfo for WMV decoder.

dlls/mf/tests/transform.c

@@ -5090,7 +5090,6 @@ static void test_wmv_decoder_media_object(void)
     hr = IMediaObject_SetOutputType(media_object, 0, NULL, DMO_SET_TYPEF_CLEAR);
     ok(hr == S_OK, "SetOutputType returned %#lx.\n", hr);
     hr = IMediaObject_GetOutputSizeInfo(media_object, 0, &size, &alignment);
-    todo_wine
     ok(hr == DMO_E_TYPE_NOT_SET, "GetOutputSizeInfo returned %#lx.\n", hr);
 
     for (i = 0; i < ARRAY_SIZE(expected_output_types); ++i)
@@ -5120,12 +5119,9 @@ static void test_wmv_decoder_media_object(void)
             ok(hr == S_OK, "MFCalculateImageSize returned %#lx.\n", hr);
 
             hr = IMediaObject_GetOutputSizeInfo(media_object, 0, &size, &alignment);
-            todo_wine
-            {
             ok(hr == S_OK, "GetOutputSizeInfo returned %#lx.\n", hr);
             ok(size == expected_size, "Got unexpected size %lu, expected %lu.\n", size, expected_size);
             ok(alignment == 1, "Got unexpected alignment %lu.\n", alignment);
-            }
         }
         winetest_pop_context();
     }

dlls/winegstreamer/wmv_decoder.c

@@ -82,6 +82,7 @@ struct wmv_decoder
 
     struct wg_format input_format;
     struct wg_format output_format;
+    GUID output_subtype;
 };
 
 static bool wg_format_is_set(struct wg_format *format)
@@ -549,7 +550,10 @@ static HRESULT WINAPI media_object_SetOutputType(IMediaObject *iface, DWORD inde
         return DMO_E_TYPE_NOT_ACCEPTED;
 
     if (!(flags & DMO_SET_TYPEF_TEST_ONLY))
+    {
+        decoder->output_subtype = type->subtype;
         decoder->output_format = wg_format;
+    }
 
     return S_OK;
 }
@@ -576,8 +580,25 @@ static HRESULT WINAPI media_object_GetInputSizeInfo(IMediaObject *iface, DWORD i
 
 static HRESULT WINAPI media_object_GetOutputSizeInfo(IMediaObject *iface, DWORD index, DWORD *size, DWORD *alignment)
 {
-    FIXME("iface %p, index %lu, size %p, alignment %p stub!\n", iface, index, size, alignment);
-    return E_NOTIMPL;
+    struct wmv_decoder *decoder = impl_from_IMediaObject(iface);
+    HRESULT hr;
+
+    TRACE("iface %p, index %lu, size %p, alignment %p.\n", iface, index, size, alignment);
+
+    if (index > 0)
+        return DMO_E_INVALIDSTREAMINDEX;
+    if (!wg_format_is_set(&decoder->output_format))
+        return DMO_E_TYPE_NOT_SET;
+
+    if (FAILED(hr = MFCalculateImageSize(&decoder->output_subtype,
+            decoder->output_format.u.video.width, decoder->output_format.u.video.height, (UINT32 *)size)))
+    {
+        FIXME("Failed to get image size of subtype %s.\n", debugstr_guid(&decoder->output_subtype));
+        return hr;
+    }
+    *alignment = 1;
+
+    return S_OK;
 }
 
 static HRESULT WINAPI media_object_GetInputMaxLatency(IMediaObject *iface, DWORD index, REFERENCE_TIME *latency)