Introduce Dolby Vision video codec and Demuxer support

media/formats/mp4/dolby_vision.h

Index: media/formats/mp4/dolby_vision.h
diff --git a/media/formats/mp4/dolby_vision.h b/media/formats/mp4/dolby_vision.h
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+++ b/media/formats/mp4/dolby_vision.h
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+// Copyright 2017 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_FORMATS_MP4_DOLBY_VISION_H_
+#define MEDIA_FORMATS_MP4_DOLBY_VISION_H_
+
+#include <vector>
+
+#include "base/memory/ref_counted.h"
+#include "media/base/media_export.h"
+#include "media/formats/mp4/box_definitions.h"
+
+namespace media {
+
+namespace mp4 {
+
+// The structure of the configuration is defined in Dolby Streams Within the ISO
+// Base Media File Format v1.1 section 3.2.
+struct MEDIA_EXPORT DolbyVisionConfiguration : Box {
+  DECLARE_BOX_METHODS(DolbyVisionConfiguration);
+
+  // Parses DolbyVisionConfiguration data encoded in |data|.
+  // Note: This method is intended to parse data outside the MP4StreamParser
+  //       context and therefore the box header is not expected to be present
+  //       in |data|.
+  // Returns true if |data| was successfully parsed.
+  bool Parse(const uint8_t* data, int data_size);
+
+  uint8_t dv_version_major;
+  uint8_t dv_version_minor;
+  uint8_t dv_profile;
+  uint8_t dv_level;
+  uint8_t rpu_present_flag;
+  uint8_t el_present_flag;
+  uint8_t bl_present_flag;
+
+  VideoCodecProfile codec_profile;
+
+ private:
+  bool ParseInternal(BufferReader* reader,
+                     const scoped_refptr<MediaLog>& media_log);
+};
+
+}  // namespace mp4
+}  // namespace media
+
+#endif  // MEDIA_FORMATS_MP4_DOLBY_VISION_H_