blob: daddbc0f0d5563c59017b3fd84464a4f8c4cd554 [file] [log] [blame]
// 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.
#include <vector>
#include "base/basictypes.h"
#include "media/base/media_export.h"
namespace media {
class BitReader;
namespace mp4 {
// The following values are extracted from ISO 14496 Part 1 Table 5 -
// objectTypeIndication Values. Only values currently in use are included.
enum ObjectType {
kForbidden = 0,
kISO_14496_3 = 0x40 // MPEG4 AAC
// This class parse object type and decoder specific information from an
// elementary stream descriptor, which is usually contained in an esds box.
// Please refer to ISO 14496 Part 1 for more details.
class MEDIA_EXPORT ESDescriptor {
bool Parse(const std::vector<uint8>& data);
uint8 object_type() const;
const std::vector<uint8>& decoder_specific_info() const;
enum Tag {
kESDescrTag = 0x03,
kDecoderConfigDescrTag = 0x04,
kDecoderSpecificInfoTag = 0x05
bool ParseDecoderConfigDescriptor(BitReader* reader);
bool ParseDecoderSpecificInfo(BitReader* reader);
uint8 object_type_;
std::vector<uint8> decoder_specific_info_;
} // namespace mp4
} // namespace media