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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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79 // Enters the end of stream state. After delivering remaining queued buffers | 79 // Enters the end of stream state. After delivering remaining queued buffers |
80 // only end of stream buffers will be delivered. | 80 // only end of stream buffers will be delivered. |
81 void SetEndOfStream(); | 81 void SetEndOfStream(); |
82 | 82 |
83 // Drops queued buffers and clears end of stream state. | 83 // Drops queued buffers and clears end of stream state. |
84 void FlushBuffers(); | 84 void FlushBuffers(); |
85 | 85 |
86 // Empties the queues and ignores any additional calls to Read(). | 86 // Empties the queues and ignores any additional calls to Read(). |
87 void Stop(); | 87 void Stop(); |
88 | 88 |
| 89 // Aborts any pending reads. |
| 90 void Abort(); |
| 91 |
89 base::TimeDelta duration() const { return duration_; } | 92 base::TimeDelta duration() const { return duration_; } |
90 | 93 |
91 // Enables fixes for files with negative timestamps. Normally all timestamps | 94 // Enables fixes for files with negative timestamps. Normally all timestamps |
92 // are rebased against FFmpegDemuxer::start_time() whenever that value is | 95 // are rebased against FFmpegDemuxer::start_time() whenever that value is |
93 // negative. When this fix is enabled, only AUDIO stream packets will be | 96 // negative. When this fix is enabled, only AUDIO stream packets will be |
94 // rebased to time zero, all other stream types will use the muxed timestamp. | 97 // rebased to time zero, all other stream types will use the muxed timestamp. |
95 // | 98 // |
96 // Further, when no codec delay is present, all AUDIO packets which originally | 99 // Further, when no codec delay is present, all AUDIO packets which originally |
97 // had negative timestamps will be marked for post-decode discard. When codec | 100 // had negative timestamps will be marked for post-decode discard. When codec |
98 // delay is present, it is assumed the decoder will handle discard and does | 101 // delay is present, it is assumed the decoder will handle discard and does |
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198 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, | 201 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, |
199 const MediaTracksUpdatedCB& media_tracks_updated_cb, | 202 const MediaTracksUpdatedCB& media_tracks_updated_cb, |
200 const scoped_refptr<MediaLog>& media_log); | 203 const scoped_refptr<MediaLog>& media_log); |
201 ~FFmpegDemuxer() override; | 204 ~FFmpegDemuxer() override; |
202 | 205 |
203 // Demuxer implementation. | 206 // Demuxer implementation. |
204 std::string GetDisplayName() const override; | 207 std::string GetDisplayName() const override; |
205 void Initialize(DemuxerHost* host, | 208 void Initialize(DemuxerHost* host, |
206 const PipelineStatusCB& status_cb, | 209 const PipelineStatusCB& status_cb, |
207 bool enable_text_tracks) override; | 210 bool enable_text_tracks) override; |
| 211 void AbortPendingReads() override; |
208 void Stop() override; | 212 void Stop() override; |
209 void StartWaitingForSeek(base::TimeDelta seek_time) override; | 213 void StartWaitingForSeek(base::TimeDelta seek_time) override; |
210 void CancelPendingSeek(base::TimeDelta seek_time) override; | 214 void CancelPendingSeek(base::TimeDelta seek_time) override; |
211 void Seek(base::TimeDelta time, const PipelineStatusCB& cb) override; | 215 void Seek(base::TimeDelta time, const PipelineStatusCB& cb) override; |
212 base::Time GetTimelineOffset() const override; | 216 base::Time GetTimelineOffset() const override; |
213 DemuxerStream* GetStream(DemuxerStream::Type type) override; | 217 DemuxerStream* GetStream(DemuxerStream::Type type) override; |
214 base::TimeDelta GetStartTime() const override; | 218 base::TimeDelta GetStartTime() const override; |
215 int64_t GetMemoryUsage() const override; | 219 int64_t GetMemoryUsage() const override; |
216 | 220 |
217 // Calls |encrypted_media_init_data_cb_| with the initialization data | 221 // Calls |encrypted_media_init_data_cb_| with the initialization data |
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350 | 354 |
351 // NOTE: Weak pointers must be invalidated before all other member variables. | 355 // NOTE: Weak pointers must be invalidated before all other member variables. |
352 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; | 356 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; |
353 | 357 |
354 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 358 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
355 }; | 359 }; |
356 | 360 |
357 } // namespace media | 361 } // namespace media |
358 | 362 |
359 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 363 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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