116 lines
3.6 KiB
C++
116 lines
3.6 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_WEBM_TRACKS_PARSER_H_
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#define MEDIA_FORMATS_WEBM_WEBM_TRACKS_PARSER_H_
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#include <map>
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#include <set>
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#include <string>
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#include <vector>
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#include "packager/base/compiler_specific.h"
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#include "packager/base/memory/scoped_ptr.h"
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#include "packager/base/time/time.h"
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#include "packager/media/base/audio_stream_info.h"
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#include "packager/media/base/text_track_config.h"
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#include "packager/media/base/video_stream_info.h"
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#include "packager/media/formats/webm/webm_audio_client.h"
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#include "packager/media/formats/webm/webm_content_encodings_client.h"
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#include "packager/media/formats/webm/webm_parser.h"
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#include "packager/media/formats/webm/webm_video_client.h"
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namespace edash_packager {
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namespace media {
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/// Parser for WebM Tracks element.
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class WebMTracksParser : public WebMParserClient {
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public:
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explicit WebMTracksParser(bool ignore_text_tracks);
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~WebMTracksParser() override;
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/// Parses a WebM Tracks element in |buf|.
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/// @return -1 if the parse fails.
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/// @return 0 if more data is needed.
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/// @return The number of bytes parsed on success.
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int Parse(const uint8_t* buf, int size);
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int64_t audio_track_num() const { return audio_track_num_; }
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int64_t video_track_num() const { return video_track_num_; }
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/// If TrackEntry DefaultDuration field existed for the associated audio or
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/// video track, returns that value converted from ns to base::TimeDelta with
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/// precision not greater than |timecode_scale_in_us|. Defaults to
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/// kNoTimestamp.
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int64_t GetAudioDefaultDuration(const double timecode_scale_in_us) const;
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int64_t GetVideoDefaultDuration(const double timecode_scale_in_us) const;
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const std::set<int64_t>& ignored_tracks() const { return ignored_tracks_; }
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const std::string& audio_encryption_key_id() const {
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return audio_encryption_key_id_;
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}
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scoped_refptr<AudioStreamInfo> audio_stream_info() {
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return audio_stream_info_;
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}
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const std::string& video_encryption_key_id() const {
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return video_encryption_key_id_;
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}
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scoped_refptr<VideoStreamInfo> video_stream_info() {
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return video_stream_info_;
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}
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typedef std::map<int, TextTrackConfig> TextTracks;
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const TextTracks& text_tracks() const {
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return text_tracks_;
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}
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private:
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// WebMParserClient implementation.
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WebMParserClient* OnListStart(int id) override;
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bool OnListEnd(int id) override;
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bool OnUInt(int id, int64_t val) override;
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bool OnFloat(int id, double val) override;
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bool OnBinary(int id, const uint8_t* data, int size) override;
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bool OnString(int id, const std::string& str) override;
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int64_t track_type_;
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int64_t track_num_;
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std::string track_name_;
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std::string track_language_;
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std::string codec_id_;
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std::vector<uint8_t> codec_private_;
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int64_t seek_preroll_;
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int64_t codec_delay_;
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int64_t default_duration_;
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scoped_ptr<WebMContentEncodingsClient> track_content_encodings_client_;
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int64_t audio_track_num_;
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int64_t audio_default_duration_;
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int64_t video_track_num_;
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int64_t video_default_duration_;
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bool ignore_text_tracks_;
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TextTracks text_tracks_;
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std::set<int64_t> ignored_tracks_;
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std::string audio_encryption_key_id_;
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std::string video_encryption_key_id_;
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WebMAudioClient audio_client_;
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scoped_refptr<AudioStreamInfo> audio_stream_info_;
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WebMVideoClient video_client_;
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scoped_refptr<VideoStreamInfo> video_stream_info_;
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DISALLOW_COPY_AND_ASSIGN(WebMTracksParser);
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};
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} // namespace media
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} // namespace edash_packager
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#endif // MEDIA_FORMATS_WEBM_WEBM_TRACKS_PARSER_H_
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