Motown: Improvements to packet definition

services/media/framework_ffmpeg/av_frame.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_MEDIA_FRAMEWORK_FFMPEG_AV_FRAME_H_
+#define SERVICES_MEDIA_FRAMEWORK_FFMPEG_AV_FRAME_H_
+
+extern "C" {
+#include "third_party/ffmpeg/libavutil/frame.h"
+}
+
+namespace mojo {
+namespace media {
+
+struct AVFrameDeleter {
+  inline void operator()(AVFrame* ptr) const {
+    av_frame_free(&ptr);
+  }
+};
+
+using AvFramePtr = std::unique_ptr<AVFrame, AVFrameDeleter>;
+
+struct AvFrame{
+  static AvFramePtr Create() {
+    return AvFramePtr(av_frame_alloc());
+  }
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif // SERVICES_MEDIA_FRAMEWORK_FFMPEG_AV_FRAME_H_