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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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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114 | 114 |
115 // Used to translate bitstream formats. | 115 // Used to translate bitstream formats. |
116 scoped_ptr<BitstreamConverter> bitstream_converter_; | 116 scoped_ptr<BitstreamConverter> bitstream_converter_; |
117 | 117 |
118 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream); | 118 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxerStream); |
119 }; | 119 }; |
120 | 120 |
121 class FFmpegDemuxer : public Demuxer, | 121 class FFmpegDemuxer : public Demuxer, |
122 public FFmpegURLProtocol { | 122 public FFmpegURLProtocol { |
123 public: | 123 public: |
124 FFmpegDemuxer(); | 124 explicit FFmpegDemuxer(MessageLoop* message_loop); |
125 virtual ~FFmpegDemuxer(); | 125 virtual ~FFmpegDemuxer(); |
126 | 126 |
127 // Posts a task to perform additional demuxing. | 127 // Posts a task to perform additional demuxing. |
128 virtual void PostDemuxTask(); | 128 virtual void PostDemuxTask(); |
129 | 129 |
130 // Filter implementation. | 130 // Filter implementation. |
131 virtual void Stop(FilterCallback* callback); | 131 virtual void Stop(FilterCallback* callback); |
132 virtual void Seek(base::TimeDelta time, FilterCallback* callback); | 132 virtual void Seek(base::TimeDelta time, FilterCallback* callback); |
133 virtual void OnAudioRendererDisabled(); | 133 virtual void OnAudioRendererDisabled(); |
134 | 134 |
135 // Demuxer implementation. | 135 // Demuxer implementation. |
136 virtual void Initialize(DataSource* data_source, FilterCallback* callback); | 136 virtual void Initialize(DataSource* data_source, FilterCallback* callback); |
137 virtual size_t GetNumberOfStreams(); | 137 virtual size_t GetNumberOfStreams(); |
138 virtual scoped_refptr<DemuxerStream> GetStream(int stream_id); | 138 virtual scoped_refptr<DemuxerStream> GetStream(int stream_id); |
139 | 139 |
140 // FFmpegProtocol implementation. | 140 // FFmpegProtocol implementation. |
141 virtual int Read(int size, uint8* data); | 141 virtual int Read(int size, uint8* data); |
142 virtual bool GetPosition(int64* position_out); | 142 virtual bool GetPosition(int64* position_out); |
143 virtual bool SetPosition(int64 position); | 143 virtual bool SetPosition(int64 position); |
144 virtual bool GetSize(int64* size_out); | 144 virtual bool GetSize(int64* size_out); |
145 virtual bool IsStreaming(); | 145 virtual bool IsStreaming(); |
146 | 146 |
147 MessageLoop* message_loop(); | |
scherkus (not reviewing)
2011/01/13 23:52:50
who's calling this method today?
acolwell GONE FROM CHROMIUM
2011/01/14 01:14:12
FFmpegDemuxerStream. Some rework could be done to
| |
148 | |
147 private: | 149 private: |
148 // Only allow a factory to create this class. | 150 // Only allow a factory to create this class. |
149 friend class MockFFmpegDemuxer; | 151 friend class MockFFmpegDemuxer; |
150 FRIEND_TEST_ALL_PREFIXES(FFmpegDemuxerTest, ProtocolRead); | 152 FRIEND_TEST_ALL_PREFIXES(FFmpegDemuxerTest, ProtocolRead); |
151 | 153 |
152 // Carries out initialization on the demuxer thread. | 154 // Carries out initialization on the demuxer thread. |
153 void InitializeTask(DataSource* data_source, FilterCallback* callback); | 155 void InitializeTask(DataSource* data_source, FilterCallback* callback); |
154 | 156 |
155 // Carries out a seek on the demuxer thread. | 157 // Carries out a seek on the demuxer thread. |
156 void SeekTask(base::TimeDelta time, FilterCallback* callback); | 158 void SeekTask(base::TimeDelta time, FilterCallback* callback); |
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180 // read has completed, this method will be called from DataSource with | 182 // read has completed, this method will be called from DataSource with |
181 // number of bytes read or kDataSource in case of error. | 183 // number of bytes read or kDataSource in case of error. |
182 void OnReadCompleted(size_t size); | 184 void OnReadCompleted(size_t size); |
183 | 185 |
184 // Wait for asynchronous read to complete and return number of bytes read. | 186 // Wait for asynchronous read to complete and return number of bytes read. |
185 virtual size_t WaitForRead(); | 187 virtual size_t WaitForRead(); |
186 | 188 |
187 // Signal that read has completed, and |size| bytes have been read. | 189 // Signal that read has completed, and |size| bytes have been read. |
188 virtual void SignalReadCompleted(size_t size); | 190 virtual void SignalReadCompleted(size_t size); |
189 | 191 |
192 MessageLoop* message_loop_; | |
193 | |
190 // FFmpeg context handle. | 194 // FFmpeg context handle. |
191 AVFormatContext* format_context_; | 195 AVFormatContext* format_context_; |
192 | 196 |
193 // Two vector of streams: | 197 // Two vector of streams: |
194 // - |streams_| is indexed for the Demuxer interface GetStream(), which only | 198 // - |streams_| is indexed for the Demuxer interface GetStream(), which only |
195 // contains supported streams and no NULL entries. | 199 // contains supported streams and no NULL entries. |
196 // - |packet_streams_| is indexed to mirror AVFormatContext when dealing | 200 // - |packet_streams_| is indexed to mirror AVFormatContext when dealing |
197 // with AVPackets returned from av_read_frame() and contain NULL entries | 201 // with AVPackets returned from av_read_frame() and contain NULL entries |
198 // representing unsupported streams where we throw away the data. | 202 // representing unsupported streams where we throw away the data. |
199 // | 203 // |
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220 | 224 |
221 size_t last_read_bytes_; | 225 size_t last_read_bytes_; |
222 int64 read_position_; | 226 int64 read_position_; |
223 | 227 |
224 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 228 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
225 }; | 229 }; |
226 | 230 |
227 } // namespace media | 231 } // namespace media |
228 | 232 |
229 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 233 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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