Motown: ffmpeg implementations of framework 'parts'

services/media/framework_ffmpeg/ffmpeg_type_converters.h

Index: services/media/framework_ffmpeg/ffmpeg_type_converters.h
diff --git a/services/media/framework_ffmpeg/ffmpeg_type_converters.h b/services/media/framework_ffmpeg/ffmpeg_type_converters.h
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index 0000000000000000000000000000000000000000..f20d892838ae5dddbf9e18dd0312c5d822c63fbf
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+++ b/services/media/framework_ffmpeg/ffmpeg_type_converters.h
@@ -0,0 +1,39 @@
+// 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_FFMPEG_TYPE_CONVERTERS_H_
+#define SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_TYPE_CONVERTERS_H_
+
+#include "services/media/framework/stream_type.h"
+extern "C" {
+#include "third_party/ffmpeg/libavformat/avformat.h"
+}
+
+namespace mojo {
+namespace media {
+
+struct AVCodecContextDeleter {
+  void operator()(AVCodecContext* context) const {
+    avcodec_free_context(&context);
+  }
+};
+
+using AvCodecContextPtr =
+    std::unique_ptr<AVCodecContext, AVCodecContextDeleter>;
+
+// We don't specialize TypeConverter here, because specializations have to
+// occur in the same namespace as the original template (mojo::, in this case).
+
+// Creates a MediaType from an AVCodecContext.
+std::unique_ptr<StreamType> StreamTypeFromAVCodecContext(
+    const AVCodecContext& from);
+
+// Creates an AVCodecContext from a StreamType.
+AvCodecContextPtr AVCodecContextFromStreamType(
+    const StreamType& stream_type);
+
+}  // namespace media
+}  // namespace mojo
+
+#endif // SERVICES_MEDIA_FRAMEWORK_FFMPEG_FFMPEG_TYPE_CONVERTERS_H_