64 lines
2.2 KiB
C++
64 lines
2.2 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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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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/// Segmenter for MP4 live, main and simple profiles. The generated media file
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/// can contain one or many segments with segment duration defined by @b
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/// MuxerOptions.segment_duration. A segment can contain one or many
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/// subsegments defined by @b num_subsegments_per_sidx. A subsegment can
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/// contain one or many fragments with fragment duration defined by @b
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/// MuxerOptions.fragment_duration. The actual segment or fragment duration
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/// may not match the requested duration exactly, but will be approximated.
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/// That is, the segmenter tries to end segment/fragment at the first sample
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/// with overall segment/fragment duration not smaller than defined duration
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/// and yet meet SAP requirements. The generated segments are written to files
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/// defined by @b MuxerOptions.segment_template if specified; otherwise,
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/// the segments are appended to the main output file specified by @b
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/// MuxerOptions.output_file_name.
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class MP4GeneralSegmenter : public MP4Segmenter {
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public:
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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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virtual ~MP4GeneralSegmenter();
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/// @name MP4Segmenter implementation overrides.
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/// @{
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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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/// @}
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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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