winegstreamer: Introduce new init_video_media_types helper.

dlls/winegstreamer/media_source.c

@@ -319,6 +319,58 @@ static HRESULT stream_descriptor_set_tag(IMFStreamDescriptor *descriptor, struct
     return hr;
 }
 
+static HRESULT init_video_media_types(struct wg_format *format, IMFMediaType *types[6], DWORD *types_count)
+{
+    /* Try to prefer YUV formats over RGB ones. Most decoders output in the
+     * YUV color space, and it's generally much less expensive for
+     * videoconvert to do YUV -> YUV transformations. */
+    static const enum wg_video_format video_formats[] =
+    {
+        WG_VIDEO_FORMAT_NV12,
+        WG_VIDEO_FORMAT_YV12,
+        WG_VIDEO_FORMAT_YUY2,
+        WG_VIDEO_FORMAT_I420,
+    };
+    UINT count = *types_count, i;
+    GUID base_subtype;
+    HRESULT hr;
+
+    if (FAILED(hr = IMFMediaType_GetGUID(types[0], &MF_MT_SUBTYPE, &base_subtype)))
+        return hr;
+
+    for (i = 0; i < ARRAY_SIZE(video_formats); ++i)
+    {
+        struct wg_format new_format = *format;
+        IMFMediaType *new_type;
+
+        new_format.u.video.format = video_formats[i];
+
+        if (!(new_type = mf_media_type_from_wg_format(&new_format)))
+        {
+            hr = E_OUTOFMEMORY;
+            goto done;
+        }
+        types[count++] = new_type;
+
+        if (video_formats[i] == WG_VIDEO_FORMAT_I420)
+        {
+            IMFMediaType *iyuv_type;
+
+            if (FAILED(hr = MFCreateMediaType(&iyuv_type)))
+                goto done;
+            if (FAILED(hr = IMFMediaType_CopyAllItems(new_type, (IMFAttributes *)iyuv_type)))
+                goto done;
+            if (FAILED(hr = IMFMediaType_SetGUID(iyuv_type, &MF_MT_SUBTYPE, &MFVideoFormat_IYUV)))
+                goto done;
+            types[count++] = iyuv_type;
+        }
+    }
+
+done:
+    *types_count = count;
+    return hr;
+}
+
 static BOOL enqueue_token(struct media_stream *stream, IUnknown *token)
 {
     if (stream->token_queue_count == stream->token_queue_cap)
@@ -931,47 +983,8 @@ static HRESULT media_stream_init_desc(struct media_stream *stream)
 
     if (format.major_type == WG_MAJOR_TYPE_VIDEO)
     {
-        /* Try to prefer YUV formats over RGB ones. Most decoders output in the
-         * YUV color space, and it's generally much less expensive for
-         * videoconvert to do YUV -> YUV transformations. */
-        static const enum wg_video_format video_formats[] =
-        {
-            WG_VIDEO_FORMAT_NV12,
-            WG_VIDEO_FORMAT_YV12,
-            WG_VIDEO_FORMAT_YUY2,
-            WG_VIDEO_FORMAT_I420,
-        };
-        GUID base_subtype;
-
-        IMFMediaType_GetGUID(stream_types[0], &MF_MT_SUBTYPE, &base_subtype);
-
-        for (i = 0; i < ARRAY_SIZE(video_formats); ++i)
-        {
-            struct wg_format new_format = format;
-            IMFMediaType *new_type;
-
-            new_format.u.video.format = video_formats[i];
-
-            if (!(new_type = mf_media_type_from_wg_format(&new_format)))
-            {
-                hr = E_OUTOFMEMORY;
-                goto done;
-            }
-            stream_types[type_count++] = new_type;
-
-            if (video_formats[i] == WG_VIDEO_FORMAT_I420)
-            {
-                IMFMediaType *iyuv_type;
-
-                if (FAILED(hr = MFCreateMediaType(&iyuv_type)))
-                    goto done;
-                if (FAILED(hr = IMFMediaType_CopyAllItems(new_type, (IMFAttributes *)iyuv_type)))
-                    goto done;
-                if (FAILED(hr = IMFMediaType_SetGUID(iyuv_type, &MF_MT_SUBTYPE, &MFVideoFormat_IYUV)))
-                    goto done;
-                stream_types[type_count++] = iyuv_type;
-            }
-        }
+        if (FAILED(hr = init_video_media_types(&format, stream_types, &type_count)))
+            goto done;
     }
     else if (format.major_type == WG_MAJOR_TYPE_AUDIO)
     {