Implement ISO BMFF support in Media Source.

media/mp4/avc.h

+// Copyright (c) 2012 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 MEDIA_MP4_AVC_H_
+#define MEDIA_MP4_AVC_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "media/base/channel_layout.h"
+
+namespace media {
+namespace mp4 {
+
+struct AVCDecoderConfigurationRecord {
+  uint8 version;
+  uint8 profile_indication;
+  uint8 profile_compatibility;
+  uint8 avc_level;
+  uint8 length_size;
+
+  typedef std::vector<uint8> SPS;
+  typedef std::vector<uint8> PPS;
+
+  std::vector<SPS> sps_list;
+  std::vector<PPS> pps_list;
+
+  AVCDecoderConfigurationRecord();
+  ~AVCDecoderConfigurationRecord();
+};
+
+// Parse(BoxReader, AVCDecoderConfigurationRecord) is declared in
+// box_definitions.h.
+
+bool ConvertAVCCToAnnexB(int length_size, std::vector<uint8>* buffer);
+
+ChannelLayout ConvertAACChannelCountToChannelLayout(int count);
+
+}  // namespace mp4
+}  // namespace media
+
+#endif  // MEDIA_MP4_AVC_H_