audio_header.h

// Copyright 2017 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
 
#ifndef PACKAGER_MEDIA_FORMATS_MP2T_AUDIO_HEADER_H_
#define PACKAGER_MEDIA_FORMATS_MP2T_AUDIO_HEADER_H_
 
#include <cstddef>
#include <cstdint>
#include <vector>
 
namespace shaka {
namespace media {
namespace mp2t {
 
class AudioHeader {
 public:
  AudioHeader() = default;
  virtual ~AudioHeader() = default;
 
  virtual bool IsSyncWord(const uint8_t* buf) const = 0;
 
  virtual size_t GetMinFrameSize() const = 0;
 
  virtual size_t GetSamplesPerFrame() const = 0;
 
  virtual bool Parse(const uint8_t* audio_frame, size_t audio_frame_size) = 0;
 
  virtual size_t GetHeaderSize() const = 0;
 
  virtual size_t GetFrameSize() const = 0;
 
  virtual size_t GetFrameSizeWithoutParsing(const uint8_t* data,
                                            size_t num_bytes) const = 0;
 
  virtual void GetAudioSpecificConfig(std::vector<uint8_t>* buffer) const = 0;
 
  virtual uint8_t GetObjectType() const = 0;
 
  virtual uint32_t GetSamplingFrequency() const = 0;
 
  virtual uint8_t GetNumChannels() const = 0;
 
 private:
  AudioHeader(const AudioHeader&) = delete;
  AudioHeader& operator=(const AudioHeader&) = delete;
};
 
}  // namespace mp2t
}  // namespace media
}  // namespace shaka
 
#endif  // PACKAGER_MEDIA_FORMATS_MP2T_AUDIO_HEADER_H_