low_latency_segment_segmenter.h

// Copyright 2014 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_MP4_LOW_LATENCY_SEGMENT_SEGMENTER_H_
#define PACKAGER_MEDIA_FORMATS_MP4_LOW_LATENCY_SEGMENT_SEGMENTER_H_
 
#include <cstddef>
#include <cstdint>
#include <memory>
#include <string>
#include <vector>
 
#include <packager/file.h>
#include <packager/file/file_closer.h>
#include <packager/macros/classes.h>
#include <packager/media/base/range.h>
#include <packager/media/formats/mp4/box_definitions.h>
#include <packager/media/formats/mp4/segmenter.h>
#include <packager/status.h>
 
namespace shaka {
namespace media {
namespace mp4 {
 
struct SegmentType;
 
class LowLatencySegmentSegmenter : public Segmenter {
 public:
  LowLatencySegmentSegmenter(const MuxerOptions& options,
                             std::unique_ptr<FileType> ftyp,
                             std::unique_ptr<Movie> moov);
  ~LowLatencySegmentSegmenter() override;
 
  bool GetInitRange(size_t* offset, size_t* size) override;
  bool GetIndexRange(size_t* offset, size_t* size) override;
  std::vector<Range> GetSegmentRanges() override;
 
 private:
  // Segmenter implementation overrides.
  Status DoInitialize() override;
  Status DoFinalize() override;
  Status DoFinalizeSegment(int64_t segment_number) override;
  Status DoFinalizeChunk(int64_t segment_number) override;
 
  // Write segment to file.
  Status WriteInitSegment();
  Status WriteChunk();
  Status WriteInitialChunk(int64_t segment_number);
  Status FinalizeSegment();
 
  uint64_t GetSegmentDuration();
 
  std::unique_ptr<SegmentType> styp_;
  uint32_t num_segments_;
  bool is_initial_chunk_in_seg_ = true;
  bool ll_dash_mpd_values_initialized_ = false;
  std::unique_ptr<File, FileCloser> segment_file_;
  std::string file_name_;
  size_t segment_size_ = 0u;
 
  DISALLOW_COPY_AND_ASSIGN(LowLatencySegmentSegmenter);
};
 
}  // namespace mp4
}  // namespace media
}  // namespace shaka
 
#endif  // PACKAGER_MEDIA_FORMATS_MP4_LOW_LATENCY_SEGMENT_SEGMENTER_H_