ts_muxer.h

// Copyright 2016 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_TS_MUXER_H_
#define PACKAGER_MEDIA_FORMATS_MP2T_TS_MUXER_H_
 
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
 
#include <packager/file.h>
#include <packager/file/file_closer.h>
#include <packager/macros/classes.h>
#include <packager/media/base/buffer_writer.h>
#include <packager/media/base/encryption_config.h>
#include <packager/media/base/media_handler.h>
#include <packager/media/base/muxer.h>
#include <packager/media/base/muxer_options.h>
#include <packager/media/formats/mp2t/ts_segmenter.h>
#include <packager/status.h>
 
namespace shaka {
namespace media {
namespace mp2t {
 
class TsMuxer : public Muxer {
 public:
  explicit TsMuxer(const MuxerOptions& muxer_options);
  ~TsMuxer() override;
 
 private:
  // Muxer implementation.
  Status InitializeMuxer() override;
  Status Finalize() override;
  Status AddMediaSample(size_t stream_id, const MediaSample& sample) override;
  Status FinalizeSegment(size_t stream_id, const SegmentInfo& sample) override;
 
  Status WriteSegment(const std::string& segment_path,
                      BufferWriter* segment_buffer);
  Status CloseFile(std::unique_ptr<File, FileCloser> file);
 
  // Encrypts |segment_buffer| in-place if AES-128 is active.
  void EncryptSegmentIfNeeded(BufferWriter* segment_buffer);
 
  void FireOnMediaStartEvent();
  void FireOnMediaEndEvent();
 
  std::unique_ptr<TsSegmenter> segmenter_;
  // Populated when protection_scheme == kAes128ProtectionScheme.
  EncryptionConfig aes128_encryption_config_;
  int64_t sample_durations_[2] = {0, 0};
  size_t num_samples_ = 0;
 
  // Used in single segment mode.
  std::unique_ptr<File, FileCloser> output_file_;
 
  // Keeps track of segment ranges in single segment mode.
  MuxerListener::MediaRanges media_ranges_;
 
  uint64_t total_duration_ = 0;
 
  DISALLOW_COPY_AND_ASSIGN(TsMuxer);
};
 
}  // namespace mp2t
}  // namespace media
}  // namespace shaka
 
#endif  // PACKAGER_MEDIA_FORMATS_MP2T_TS_MUXER_H_