segment_coordinator.h

// Copyright 2025 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_CHUNKING_SEGMENT_COORDINATOR_H_
#define PACKAGER_MEDIA_CHUNKING_SEGMENT_COORDINATOR_H_
 
#include <cstddef>
#include <cstdint>
#include <memory>
#include <optional>
#include <set>
 
#include <packager/media/base/media_handler.h>
#include <packager/status.h>
 
namespace shaka {
namespace media {
 
class SegmentCoordinator : public MediaHandler {
 public:
  SegmentCoordinator();
  ~SegmentCoordinator() override = default;
 
  void MarkAsTeletextStream(size_t input_stream_index);
 
 protected:
  Status InitializeInternal() override;
  Status Process(std::unique_ptr<StreamData> stream_data) override;
 
 private:
  SegmentCoordinator(const SegmentCoordinator&) = delete;
  SegmentCoordinator& operator=(const SegmentCoordinator&) = delete;
 
  Status OnSegmentInfo(size_t input_stream_index,
                       std::shared_ptr<const SegmentInfo> info);
 
  bool IsTeletextStream(size_t input_stream_index) const;
 
  int64_t latest_segment_boundary_ = 0;
 
  std::set<size_t> teletext_stream_indices_;
 
  std::optional<size_t> sync_source_stream_index_;
};
 
}  // namespace media
}  // namespace shaka
 
#endif  // PACKAGER_MEDIA_CHUNKING_SEGMENT_COORDINATOR_H_