composition_offset_iterator.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_COMPOSITION_OFFSET_ITERATOR_H_
#define PACKAGER_MEDIA_FORMATS_MP4_COMPOSITION_OFFSET_ITERATOR_H_
 
#include <cstdint>
#include <vector>
 
#include <packager/macros/classes.h>
#include <packager/media/formats/mp4/box_definitions.h>
 
namespace shaka {
namespace media {
namespace mp4 {
 
class CompositionOffsetIterator {
 public:
  explicit CompositionOffsetIterator(
      const CompositionTimeToSample& composition_time_to_sample);
  ~CompositionOffsetIterator();
 
  bool AdvanceSample();
 
  bool IsValid() const;
 
  int64_t sample_offset() const { return iterator_->sample_offset; }
 
  int64_t SampleOffset(uint32_t sample) const;
 
  uint32_t NumSamples() const;
 
 private:
  uint32_t sample_index_;
  const std::vector<CompositionOffset>& composition_offset_table_;
  std::vector<CompositionOffset>::const_iterator iterator_;
 
  DISALLOW_COPY_AND_ASSIGN(CompositionOffsetIterator);
};
 
}  // namespace mp4
}  // namespace media
}  // namespace shaka
 
#endif  // PACKAGER_MEDIA_FORMATS_MP4_COMPOSITION_OFFSET_ITERATOR_H_