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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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264 | 264 |
265 // FFmpeg callbacks during initialization. | 265 // FFmpeg callbacks during initialization. |
266 void OnOpenContextDone(const PipelineStatusCB& status_cb, bool result); | 266 void OnOpenContextDone(const PipelineStatusCB& status_cb, bool result); |
267 void OnFindStreamInfoDone(const PipelineStatusCB& status_cb, int result); | 267 void OnFindStreamInfoDone(const PipelineStatusCB& status_cb, int result); |
268 | 268 |
269 void LogMetadata(AVFormatContext* avctx, base::TimeDelta max_duration); | 269 void LogMetadata(AVFormatContext* avctx, base::TimeDelta max_duration); |
270 | 270 |
271 // FFmpeg callbacks during seeking. | 271 // FFmpeg callbacks during seeking. |
272 void OnSeekFrameDone(int result); | 272 void OnSeekFrameDone(int result); |
273 | 273 |
| 274 // Called when FFmpeg completes seek initiated in OnSelectedVideoTrackChanged |
| 275 // in order to restart the |stream|. |
| 276 void OnSeekDoneForRestartingStream(FFmpegDemuxerStream* stream, int result); |
| 277 |
274 // FFmpeg callbacks during reading + helper method to initiate reads. | 278 // FFmpeg callbacks during reading + helper method to initiate reads. |
275 void ReadFrameIfNeeded(); | 279 void ReadFrameIfNeeded(); |
276 void OnReadFrameDone(ScopedAVPacket packet, int result); | 280 void OnReadFrameDone(ScopedAVPacket packet, int result); |
277 | 281 |
278 // Returns true iff any stream has additional capacity. Note that streams can | 282 // Returns true iff any stream has additional capacity. Note that streams can |
279 // go over capacity depending on how the file is muxed. | 283 // go over capacity depending on how the file is muxed. |
280 bool StreamsHaveAvailableCapacity(); | 284 bool StreamsHaveAvailableCapacity(); |
281 | 285 |
282 // Returns true if the maximum allowed memory usage has been reached. | 286 // Returns true if the maximum allowed memory usage has been reached. |
283 bool IsMaxMemoryUsageReached() const; | 287 bool IsMaxMemoryUsageReached() const; |
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372 // FFmpegURLProtocol implementation and corresponding glue bits. | 376 // FFmpegURLProtocol implementation and corresponding glue bits. |
373 std::unique_ptr<BlockingUrlProtocol> url_protocol_; | 377 std::unique_ptr<BlockingUrlProtocol> url_protocol_; |
374 std::unique_ptr<FFmpegGlue> glue_; | 378 std::unique_ptr<FFmpegGlue> glue_; |
375 | 379 |
376 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; | 380 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; |
377 | 381 |
378 const MediaTracksUpdatedCB media_tracks_updated_cb_; | 382 const MediaTracksUpdatedCB media_tracks_updated_cb_; |
379 | 383 |
380 std::map<MediaTrack::Id, FFmpegDemuxerStream*> track_id_to_demux_stream_map_; | 384 std::map<MediaTrack::Id, FFmpegDemuxerStream*> track_id_to_demux_stream_map_; |
381 | 385 |
| 386 int64_t last_packet_pos_; |
| 387 FFmpegDemuxerStream* restarting_stream_; |
| 388 |
382 // NOTE: Weak pointers must be invalidated before all other member variables. | 389 // NOTE: Weak pointers must be invalidated before all other member variables. |
383 base::WeakPtr<FFmpegDemuxer> weak_this_; | 390 base::WeakPtr<FFmpegDemuxer> weak_this_; |
384 base::WeakPtrFactory<FFmpegDemuxer> cancel_pending_seek_factory_; | 391 base::WeakPtrFactory<FFmpegDemuxer> cancel_pending_seek_factory_; |
385 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; | 392 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; |
386 | 393 |
387 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 394 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
388 }; | 395 }; |
389 | 396 |
390 } // namespace media | 397 } // namespace media |
391 | 398 |
392 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 399 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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