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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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132 public: | 132 public: |
133 FFmpegDemuxer(MessageLoop* message_loop, | 133 FFmpegDemuxer(MessageLoop* message_loop, |
134 const scoped_refptr<DataSource>& data_source, | 134 const scoped_refptr<DataSource>& data_source, |
135 bool local_source); | 135 bool local_source); |
136 virtual ~FFmpegDemuxer(); | 136 virtual ~FFmpegDemuxer(); |
137 | 137 |
138 // Posts a task to perform additional demuxing. | 138 // Posts a task to perform additional demuxing. |
139 virtual void PostDemuxTask(); | 139 virtual void PostDemuxTask(); |
140 | 140 |
141 // Demuxer implementation. | 141 // Demuxer implementation. |
142 virtual void set_host(DemuxerHost* demuxer_host) OVERRIDE; | 142 virtual void Initialize(DemuxerHost* host, |
143 virtual void Initialize(const PipelineStatusCB& status_cb) OVERRIDE; | 143 const PipelineStatusCB& status_cb) OVERRIDE; |
144 virtual void Stop(const base::Closure& callback) OVERRIDE; | 144 virtual void Stop(const base::Closure& callback) OVERRIDE; |
145 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& cb) OVERRIDE; | 145 virtual void Seek(base::TimeDelta time, const PipelineStatusCB& cb) OVERRIDE; |
146 virtual void OnAudioRendererDisabled() OVERRIDE; | 146 virtual void OnAudioRendererDisabled() OVERRIDE; |
147 virtual void SetPlaybackRate(float playback_rate) OVERRIDE; | 147 virtual void SetPlaybackRate(float playback_rate) OVERRIDE; |
148 virtual scoped_refptr<DemuxerStream> GetStream( | 148 virtual scoped_refptr<DemuxerStream> GetStream( |
149 DemuxerStream::Type type) OVERRIDE; | 149 DemuxerStream::Type type) OVERRIDE; |
150 virtual base::TimeDelta GetStartTime() const OVERRIDE; | 150 virtual base::TimeDelta GetStartTime() const OVERRIDE; |
151 virtual int GetBitrate() OVERRIDE; | 151 virtual int GetBitrate() OVERRIDE; |
152 virtual bool IsLocalSource() OVERRIDE; | 152 virtual bool IsLocalSource() OVERRIDE; |
153 virtual bool IsSeekable() OVERRIDE; | 153 virtual bool IsSeekable() OVERRIDE; |
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164 | 164 |
165 // For testing purposes. | 165 // For testing purposes. |
166 void disable_first_seek_hack_for_testing() { first_seek_hack_ = false; } | 166 void disable_first_seek_hack_for_testing() { first_seek_hack_ = false; } |
167 | 167 |
168 private: | 168 private: |
169 // Only allow a factory to create this class. | 169 // Only allow a factory to create this class. |
170 friend class MockFFmpegDemuxer; | 170 friend class MockFFmpegDemuxer; |
171 FRIEND_TEST_ALL_PREFIXES(FFmpegDemuxerTest, ProtocolRead); | 171 FRIEND_TEST_ALL_PREFIXES(FFmpegDemuxerTest, ProtocolRead); |
172 | 172 |
173 // Carries out initialization on the demuxer thread. | 173 // Carries out initialization on the demuxer thread. |
174 void InitializeTask(const PipelineStatusCB& status_cb); | 174 void InitializeTask(DemuxerHost* host, const PipelineStatusCB& status_cb); |
175 | 175 |
176 // Carries out a seek on the demuxer thread. | 176 // Carries out a seek on the demuxer thread. |
177 void SeekTask(base::TimeDelta time, const PipelineStatusCB& cb); | 177 void SeekTask(base::TimeDelta time, const PipelineStatusCB& cb); |
178 | 178 |
179 // Carries out demuxing and satisfying stream reads on the demuxer thread. | 179 // Carries out demuxing and satisfying stream reads on the demuxer thread. |
180 void DemuxTask(); | 180 void DemuxTask(); |
181 | 181 |
182 // Carries out stopping the demuxer streams on the demuxer thread. | 182 // Carries out stopping the demuxer streams on the demuxer thread. |
183 void StopTask(const base::Closure& callback); | 183 void StopTask(const base::Closure& callback); |
184 | 184 |
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197 // Must be called on the demuxer thread. | 197 // Must be called on the demuxer thread. |
198 void StreamHasEnded(); | 198 void StreamHasEnded(); |
199 | 199 |
200 // Wait for asynchronous read to complete and return number of bytes read. | 200 // Wait for asynchronous read to complete and return number of bytes read. |
201 virtual int WaitForRead(); | 201 virtual int WaitForRead(); |
202 | 202 |
203 // Signal the blocked thread that the read has completed, with |size| bytes | 203 // Signal the blocked thread that the read has completed, with |size| bytes |
204 // read or kReadError in case of error. | 204 // read or kReadError in case of error. |
205 virtual void SignalReadCompleted(int size); | 205 virtual void SignalReadCompleted(int size); |
206 | 206 |
| 207 DemuxerHost* host_; |
| 208 |
207 MessageLoop* message_loop_; | 209 MessageLoop* message_loop_; |
208 | 210 |
209 // True if the media is a local resource, false if the media require network | 211 // True if the media is a local resource, false if the media require network |
210 // access to be loaded. | 212 // access to be loaded. |
211 bool local_source_; | 213 bool local_source_; |
212 | 214 |
213 // FFmpeg context handle. | 215 // FFmpeg context handle. |
214 AVFormatContext* format_context_; | 216 AVFormatContext* format_context_; |
215 | 217 |
216 // |streams_| mirrors the AVStream array in |format_context_|. It contains | 218 // |streams_| mirrors the AVStream array in |format_context_|. It contains |
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256 // Whether audio has been disabled for this demuxer (in which case this class | 258 // Whether audio has been disabled for this demuxer (in which case this class |
257 // drops packets destined for AUDIO demuxer streams on the floor). | 259 // drops packets destined for AUDIO demuxer streams on the floor). |
258 bool audio_disabled_; | 260 bool audio_disabled_; |
259 | 261 |
260 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 262 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
261 }; | 263 }; |
262 | 264 |
263 } // namespace media | 265 } // namespace media |
264 | 266 |
265 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 267 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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