120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
// Copyright 2014 The Chromium Authors. 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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#ifndef MEDIA_FORMATS_WEBM_TRACKS_BUILDER_H_
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#define MEDIA_FORMATS_WEBM_TRACKS_BUILDER_H_
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#include <stdint.h>
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#include <list>
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#include <string>
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#include <vector>
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#include "packager/base/macros.h"
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namespace shaka {
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namespace media {
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class TracksBuilder {
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public:
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// If |allow_invalid_values| is false, some AddTrack() parameters will be
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// basically checked and will assert if out of valid range. |codec_id|,
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// |name|, |language| and any device-specific constraints are not checked.
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explicit TracksBuilder(bool allow_invalid_values);
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TracksBuilder(); // Sets |allow_invalid_values| to false.
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~TracksBuilder();
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// Only a non-negative |default_duration| will result in a serialized
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// kWebMIdDefaultDuration element. Note, 0 is allowed here for testing only
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// if |allow_invalid_values_| is true, since it is an illegal value for
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// DefaultDuration. Similar applies to |audio_channels|,
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// |audio_sampling_frequency|, |video_pixel_width| and |video_pixel_height|.
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void AddVideoTrack(int track_num,
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uint64_t track_uid,
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const std::string& codec_id,
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const std::string& name,
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const std::string& language,
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int default_duration,
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int video_pixel_width,
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int video_pixel_height);
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void AddAudioTrack(int track_num,
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uint64_t track_uid,
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const std::string& codec_id,
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const std::string& name,
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const std::string& language,
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int default_duration,
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int audio_channels,
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double audio_sampling_frequency);
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void AddTextTrack(int track_num,
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uint64_t track_uid,
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const std::string& codec_id,
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const std::string& name,
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const std::string& language);
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std::vector<uint8_t> Finish();
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private:
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void AddTrackInternal(int track_num,
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int track_type,
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uint64_t track_uid,
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const std::string& codec_id,
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const std::string& name,
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const std::string& language,
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int default_duration,
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int video_pixel_width,
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int video_pixel_height,
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int audio_channels,
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double audio_sampling_frequency);
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int GetTracksSize() const;
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int GetTracksPayloadSize() const;
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void WriteTracks(uint8_t* buffer, int buffer_size) const;
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class Track {
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public:
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Track(int track_num,
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int track_type,
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uint64_t track_uid,
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const std::string& codec_id,
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const std::string& name,
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const std::string& language,
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int default_duration,
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int video_pixel_width,
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int video_pixel_height,
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int audio_channels,
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double audio_sampling_frequency,
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bool allow_invalid_values);
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int GetSize() const;
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void Write(uint8_t** buf, int* buf_size) const;
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private:
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int GetPayloadSize() const;
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int GetVideoPayloadSize() const;
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int GetAudioPayloadSize() const;
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int track_num_;
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int track_type_;
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int track_uid_;
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std::string codec_id_;
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std::string name_;
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std::string language_;
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int default_duration_;
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int video_pixel_width_;
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int video_pixel_height_;
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int audio_channels_;
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double audio_sampling_frequency_;
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};
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typedef std::list<Track> TrackList;
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TrackList tracks_;
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bool allow_invalid_values_;
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DISALLOW_COPY_AND_ASSIGN(TracksBuilder);
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};
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} // namespace media
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} // namespace shaka
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#endif // MEDIA_FORMATS_WEBM_TRACKS_BUILDER_H_
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