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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_FORMATS_MP4_AC3_H_
#define MEDIA_FORMATS_MP4_AC3_H_
#include <stdint.h>
#include <vector>
#include "build/build_config.h"
#include "media/base/audio_codecs.h"
#include "media/base/channel_layout.h"
#include "media/base/media_export.h"
#include "media/base/media_log.h"
#include "media/media_buildflags.h"
namespace media {
namespace mp4 {
// This class parses the EAC3 information from decoder specific information
// embedded in the dec3 box in an ISO BMFF file.
// Please refer to ETSI TS 102 366 V1.4.1
// https://www.etsi.org/deliver/etsi_ts/102300_102399/102366/01.04.01_60/ts_102366v010401p.pdf
// F.4 AC3SpecificBox
// for more details.
class MEDIA_EXPORT AC3 {
public:
AC3();
AC3(const AC3& other);
~AC3();
// Parse the AC3 config from the dac3 box.
bool Parse(const std::vector<uint8_t>& data, MediaLog* media_log);
uint32_t GetChannelCount() const;
private:
// The channel count stored in the compressed audio stream.
uint32_t channel_count_ = 0;
};
} // namespace mp4
} // namespace media
#endif // MEDIA_FORMATS_MP4_AC3_H_