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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Implements the Demuxer interface using FFmpeg's libavformat. At this time | 5 // Implements the Demuxer interface using FFmpeg's libavformat. At this time |
6 // will support demuxing any audio/video format thrown at it. The streams | 6 // will support demuxing any audio/video format thrown at it. The streams |
7 // output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer | 7 // output mime types audio/x-ffmpeg and video/x-ffmpeg and include an integer |
8 // key FFmpegCodecID which contains the CodecID enumeration value. The CodecIDs | 8 // key FFmpegCodecID which contains the CodecID enumeration value. The CodecIDs |
9 // can be used to create and initialize the corresponding FFmpeg decoder. | 9 // can be used to create and initialize the corresponding FFmpeg decoder. |
10 // | 10 // |
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103 | 103 |
104 // DemuxerStream implementation. | 104 // DemuxerStream implementation. |
105 Type type() const override; | 105 Type type() const override; |
106 Liveness liveness() const override; | 106 Liveness liveness() const override; |
107 void Read(const ReadCB& read_cb) override; | 107 void Read(const ReadCB& read_cb) override; |
108 void EnableBitstreamConverter() override; | 108 void EnableBitstreamConverter() override; |
109 bool SupportsConfigChanges() override; | 109 bool SupportsConfigChanges() override; |
110 AudioDecoderConfig audio_decoder_config() override; | 110 AudioDecoderConfig audio_decoder_config() override; |
111 VideoDecoderConfig video_decoder_config() override; | 111 VideoDecoderConfig video_decoder_config() override; |
112 VideoRotation video_rotation() override; | 112 VideoRotation video_rotation() override; |
| 113 bool enabled() const override; |
| 114 void set_enabled(bool enabled, base::TimeDelta timestamp) override; |
| 115 void SetStreamRestartedCB(const StreamRestartedCB& cb) override; |
113 | 116 |
114 void SetLiveness(Liveness liveness); | 117 void SetLiveness(Liveness liveness); |
115 | 118 |
116 // Returns the range of buffered data in this stream. | 119 // Returns the range of buffered data in this stream. |
117 Ranges<base::TimeDelta> GetBufferedRanges() const; | 120 Ranges<base::TimeDelta> GetBufferedRanges() const; |
118 | 121 |
119 // Returns elapsed time based on the already queued packets. | 122 // Returns elapsed time based on the already queued packets. |
120 // Used to determine stream duration when it's not known ahead of time. | 123 // Used to determine stream duration when it's not known ahead of time. |
121 base::TimeDelta GetElapsedTime() const; | 124 base::TimeDelta GetElapsedTime() const; |
122 | 125 |
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164 std::unique_ptr<AudioDecoderConfig> audio_config_; | 167 std::unique_ptr<AudioDecoderConfig> audio_config_; |
165 std::unique_ptr<VideoDecoderConfig> video_config_; | 168 std::unique_ptr<VideoDecoderConfig> video_config_; |
166 Type type_; | 169 Type type_; |
167 Liveness liveness_; | 170 Liveness liveness_; |
168 base::TimeDelta duration_; | 171 base::TimeDelta duration_; |
169 bool end_of_stream_; | 172 bool end_of_stream_; |
170 base::TimeDelta last_packet_timestamp_; | 173 base::TimeDelta last_packet_timestamp_; |
171 base::TimeDelta last_packet_duration_; | 174 base::TimeDelta last_packet_duration_; |
172 Ranges<base::TimeDelta> buffered_ranges_; | 175 Ranges<base::TimeDelta> buffered_ranges_; |
173 VideoRotation video_rotation_; | 176 VideoRotation video_rotation_; |
| 177 bool is_enabled_; |
| 178 bool waiting_for_keyframe_; |
174 | 179 |
175 DecoderBufferQueue buffer_queue_; | 180 DecoderBufferQueue buffer_queue_; |
176 ReadCB read_cb_; | 181 ReadCB read_cb_; |
| 182 StreamRestartedCB stream_restarted_cb_; |
177 | 183 |
178 #if defined(USE_PROPRIETARY_CODECS) | 184 #if defined(USE_PROPRIETARY_CODECS) |
179 std::unique_ptr<FFmpegBitstreamConverter> bitstream_converter_; | 185 std::unique_ptr<FFmpegBitstreamConverter> bitstream_converter_; |
180 #endif | 186 #endif |
181 | 187 |
182 std::string encryption_key_id_; | 188 std::string encryption_key_id_; |
183 bool fixup_negative_timestamps_; | 189 bool fixup_negative_timestamps_; |
184 | 190 |
185 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream); | 191 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream); |
186 }; | 192 }; |
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211 // Calls |encrypted_media_init_data_cb_| with the initialization data | 217 // Calls |encrypted_media_init_data_cb_| with the initialization data |
212 // encountered in the file. | 218 // encountered in the file. |
213 void OnEncryptedMediaInitData(EmeInitDataType init_data_type, | 219 void OnEncryptedMediaInitData(EmeInitDataType init_data_type, |
214 const std::string& encryption_key_id); | 220 const std::string& encryption_key_id); |
215 | 221 |
216 // Allow FFmpegDemuxerStream to notify us when there is updated information | 222 // Allow FFmpegDemuxerStream to notify us when there is updated information |
217 // about capacity and what buffered data is available. | 223 // about capacity and what buffered data is available. |
218 void NotifyCapacityAvailable(); | 224 void NotifyCapacityAvailable(); |
219 void NotifyBufferingChanged(); | 225 void NotifyBufferingChanged(); |
220 | 226 |
| 227 void OnEnabledAudioTracksChanged(const std::vector<MediaTrack::Id>& track_ids, |
| 228 base::TimeDelta currTime) override; |
| 229 // |track_ids| is either empty or contains a single video track id. |
| 230 void OnSelectedVideoTrackChanged(const std::vector<MediaTrack::Id>& track_ids, |
| 231 base::TimeDelta currTime) override; |
| 232 |
221 // The lowest demuxed timestamp. If negative, DemuxerStreams must use this to | 233 // The lowest demuxed timestamp. If negative, DemuxerStreams must use this to |
222 // adjust packet timestamps such that external clients see a zero-based | 234 // adjust packet timestamps such that external clients see a zero-based |
223 // timeline. | 235 // timeline. |
224 base::TimeDelta start_time() const { return start_time_; } | 236 base::TimeDelta start_time() const { return start_time_; } |
225 | 237 |
226 private: | 238 private: |
227 // To allow tests access to privates. | 239 // To allow tests access to privates. |
228 friend class FFmpegDemuxerTest; | 240 friend class FFmpegDemuxerTest; |
229 | 241 |
230 // FFmpeg callbacks during initialization. | 242 // FFmpeg callbacks during initialization. |
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327 bool duration_known_; | 339 bool duration_known_; |
328 | 340 |
329 // FFmpegURLProtocol implementation and corresponding glue bits. | 341 // FFmpegURLProtocol implementation and corresponding glue bits. |
330 std::unique_ptr<BlockingUrlProtocol> url_protocol_; | 342 std::unique_ptr<BlockingUrlProtocol> url_protocol_; |
331 std::unique_ptr<FFmpegGlue> glue_; | 343 std::unique_ptr<FFmpegGlue> glue_; |
332 | 344 |
333 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; | 345 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; |
334 | 346 |
335 const MediaTracksUpdatedCB media_tracks_updated_cb_; | 347 const MediaTracksUpdatedCB media_tracks_updated_cb_; |
336 | 348 |
| 349 std::map<MediaTrack::Id, const DemuxerStream*> track_id_to_demux_stream_map_; |
| 350 |
337 // NOTE: Weak pointers must be invalidated before all other member variables. | 351 // NOTE: Weak pointers must be invalidated before all other member variables. |
338 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; | 352 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; |
339 | 353 |
340 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 354 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
341 }; | 355 }; |
342 | 356 |
343 } // namespace media | 357 } // namespace media |
344 | 358 |
345 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 359 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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