// Copyright 2014 Google Inc. 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
//
// Segmenter for MP4 Dash Video-On-Demand profile. A single MP4 file with a
// single segment is created, i.e. with only one SIDX box. The generated media
// file could contain one to many subsegments with subsegment duration
// defined by|MuxerOptions.segment_duration|. A subsegment could contain one
//  to many fragments with fragment duration defined by
// |MuxerOptions.fragment_duration|. The actual subsegment or fragment duration
// may not match the defined duration exactly but in a best effort basic, i.e.
// the segmenter tries to end subsegment/fragment at the first sample with
// overall subsegment/fragment duration not smaller than defined duration and
// yet meet SAP requirements. VOD segmenter ignores
// |MuxerOptions.num_subsegments_per_sidx|.

#ifndef MEDIA_MP4_MP4_VOD_SEGMENTER_H_
#define MEDIA_MP4_MP4_VOD_SEGMENTER_H_

#include "media/file/file_closer.h"
#include "media/mp4/mp4_segmenter.h"

namespace media {
namespace mp4 {

class MP4VODSegmenter : public MP4Segmenter {
 public:
  // Caller transfers the ownership of |ftyp| and |moov| to this class.
  MP4VODSegmenter(const MuxerOptions& options,
                  scoped_ptr<FileType> ftyp,
                  scoped_ptr<Movie> moov);
  virtual ~MP4VODSegmenter();

  // MP4Segmenter implementations.
  virtual Status Initialize(EncryptorSource* encryptor_source,
                            double clear_lead_in_seconds,
                            const std::vector<MediaStream*>& streams) OVERRIDE;
  virtual Status Finalize() OVERRIDE;

  virtual bool GetInitRange(size_t* offset, size_t* size) OVERRIDE;
  virtual bool GetIndexRange(size_t* offset, size_t* size) OVERRIDE;

 protected:
  virtual Status FinalizeSegment() OVERRIDE;

 private:
  scoped_ptr<SegmentIndex> vod_sidx_;
  scoped_ptr<File, FileCloser> temp_file_;

  DISALLOW_COPY_AND_ASSIGN(MP4VODSegmenter);
};

}  // namespace mp4
}  // namespace media

#endif  // MEDIA_MP4_MP4_VOD_SEGMENTER_H_