62 lines
2.2 KiB
C++
62 lines
2.2 KiB
C++
// Copyright (c) 2013 Google Inc. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Segmenter for MP4 live, main and simple profiles. The generated media file
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// could contain one to many segments with segment duration defined by
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// |MuxerOptions.segment_duration|. A segment could contain one to many
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// subsegments defined by |num_subsegments_per_sidx|. A subsegment could
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// contain one to many fragments with fragment duration defined by
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// |MuxerOptions.fragment_duration|. The actual segment or fragment duration
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// may not match the defined duration exactly but in a best effort basic, i.e.
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// the segmenter tries to end segment/fragment at the first sample with
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// overall segment/fragment duration not smaller than defined duration and
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// yet meet SAP requirements. The generated segments are written into files
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// defined by |MuxerOptions.segment_template| if it is defined; otherwise,
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// the segments are appended to the main output file defined by
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// |MuxerOptions.output_file_name|.
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#ifndef MEDIA_MP4_MP4_GENERAL_SEGMENTER_H_
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#define MEDIA_MP4_MP4_GENERAL_SEGMENTER_H_
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#include "media/mp4/mp4_segmenter.h"
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namespace media {
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namespace mp4 {
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struct SegmentType;
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class MP4GeneralSegmenter : public MP4Segmenter {
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public:
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// Caller transfers the ownership of |ftyp| and |moov| to this class.
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MP4GeneralSegmenter(const MuxerOptions& options,
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scoped_ptr<FileType> ftyp,
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scoped_ptr<Movie> moov);
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~MP4GeneralSegmenter();
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// MP4Segmenter implementations.
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virtual Status Initialize(EncryptorSource* encryptor_source,
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double clear_lead_in_seconds,
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const std::vector<MediaStream*>& streams) OVERRIDE;
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virtual bool GetInitRange(size_t* offset, size_t* size) OVERRIDE;
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virtual bool GetIndexRange(size_t* offset, size_t* size) OVERRIDE;
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protected:
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virtual Status FinalizeSegment() OVERRIDE;
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private:
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// Write segment to file.
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Status WriteSegment();
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scoped_ptr<SegmentType> styp_;
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uint32 num_segments_;
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DISALLOW_COPY_AND_ASSIGN(MP4GeneralSegmenter);
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};
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} // namespace mp4
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} // namespace media
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#endif // MEDIA_MP4_MP4_GENERAL_SEGMENTER_H_
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