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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 // |
11 // FFmpegDemuxer sets the duration of pipeline during initialization by using | 11 // FFmpegDemuxer sets the duration of pipeline during initialization by using |
12 // the duration of the longest audio/video stream. | 12 // the duration of the longest audio/video stream. |
13 // | 13 // |
14 // NOTE: since FFmpegDemuxer reads packets sequentially without seeking, media | 14 // NOTE: since FFmpegDemuxer reads packets sequentially without seeking, media |
15 // files with very large drift between audio/video streams may result in | 15 // files with very large drift between audio/video streams may result in |
16 // excessive memory consumption. | 16 // excessive memory consumption. |
17 // | 17 // |
18 // When stopped, FFmpegDemuxer and FFmpegDemuxerStream release all callbacks | 18 // When stopped, FFmpegDemuxer and FFmpegDemuxerStream release all callbacks |
19 // and buffered packets. Reads from a stopped FFmpegDemuxerStream will not be | 19 // and buffered packets. Reads from a stopped FFmpegDemuxerStream will not be |
20 // replied to. | 20 // replied to. |
21 | 21 |
22 #ifndef MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 22 #ifndef MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
23 #define MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 23 #define MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
24 | 24 |
25 #include <stddef.h> | 25 #include <stddef.h> |
26 #include <stdint.h> | 26 #include <stdint.h> |
27 | 27 |
| 28 #include <map> |
28 #include <string> | 29 #include <string> |
29 #include <utility> | 30 #include <utility> |
30 #include <vector> | 31 #include <vector> |
31 | 32 |
32 #include "base/callback.h" | 33 #include "base/callback.h" |
33 #include "base/macros.h" | 34 #include "base/macros.h" |
34 #include "base/memory/scoped_ptr.h" | 35 #include "base/memory/scoped_ptr.h" |
35 #include "base/memory/scoped_vector.h" | 36 #include "base/memory/scoped_vector.h" |
36 #include "base/threading/thread.h" | 37 #include "base/threading/thread.h" |
37 #include "media/base/audio_decoder_config.h" | 38 #include "media/base/audio_decoder_config.h" |
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216 // Allow FFmpegDemuxerStream to notify us when there is updated information | 217 // Allow FFmpegDemuxerStream to notify us when there is updated information |
217 // about capacity and what buffered data is available. | 218 // about capacity and what buffered data is available. |
218 void NotifyCapacityAvailable(); | 219 void NotifyCapacityAvailable(); |
219 void NotifyBufferingChanged(); | 220 void NotifyBufferingChanged(); |
220 | 221 |
221 // The lowest demuxed timestamp. If negative, DemuxerStreams must use this to | 222 // The lowest demuxed timestamp. If negative, DemuxerStreams must use this to |
222 // adjust packet timestamps such that external clients see a zero-based | 223 // adjust packet timestamps such that external clients see a zero-based |
223 // timeline. | 224 // timeline. |
224 base::TimeDelta start_time() const { return start_time_; } | 225 base::TimeDelta start_time() const { return start_time_; } |
225 | 226 |
| 227 // Notifies the demuxer that track ids has been assigned to a media tracks. |
| 228 void OnTrackIdsAssigned(const MediaTracks& tracks, |
| 229 const std::vector<unsigned>& track_ids) override; |
| 230 |
| 231 // Finds a DemuxerStream corresponding to the given blink |track_id|. Note |
| 232 // that the input track id is blink track id and not bytestream track id. |
| 233 const DemuxerStream* GetDemuxerStreamByTrackId( |
| 234 unsigned track_id) const override; |
| 235 |
226 private: | 236 private: |
227 // To allow tests access to privates. | 237 // To allow tests access to privates. |
228 friend class FFmpegDemuxerTest; | 238 friend class FFmpegDemuxerTest; |
229 | 239 |
230 // FFmpeg callbacks during initialization. | 240 // FFmpeg callbacks during initialization. |
231 void OnOpenContextDone(const PipelineStatusCB& status_cb, bool result); | 241 void OnOpenContextDone(const PipelineStatusCB& status_cb, bool result); |
232 void OnFindStreamInfoDone(const PipelineStatusCB& status_cb, int result); | 242 void OnFindStreamInfoDone(const PipelineStatusCB& status_cb, int result); |
233 | 243 |
234 // FFmpeg callbacks during seeking. | 244 // FFmpeg callbacks during seeking. |
235 void OnSeekFrameDone(const PipelineStatusCB& cb, int result); | 245 void OnSeekFrameDone(const PipelineStatusCB& cb, int result); |
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327 bool duration_known_; | 337 bool duration_known_; |
328 | 338 |
329 // FFmpegURLProtocol implementation and corresponding glue bits. | 339 // FFmpegURLProtocol implementation and corresponding glue bits. |
330 scoped_ptr<BlockingUrlProtocol> url_protocol_; | 340 scoped_ptr<BlockingUrlProtocol> url_protocol_; |
331 scoped_ptr<FFmpegGlue> glue_; | 341 scoped_ptr<FFmpegGlue> glue_; |
332 | 342 |
333 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; | 343 const EncryptedMediaInitDataCB encrypted_media_init_data_cb_; |
334 | 344 |
335 const MediaTracksUpdatedCB media_tracks_updated_cb_; | 345 const MediaTracksUpdatedCB media_tracks_updated_cb_; |
336 | 346 |
| 347 std::map<unsigned, const DemuxerStream*> track_id_to_demux_stream_; |
| 348 |
337 // NOTE: Weak pointers must be invalidated before all other member variables. | 349 // NOTE: Weak pointers must be invalidated before all other member variables. |
338 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; | 350 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; |
339 | 351 |
340 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 352 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
341 }; | 353 }; |
342 | 354 |
343 } // namespace media | 355 } // namespace media |
344 | 356 |
345 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 357 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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