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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> |
| 26 #include <stdint.h> |
| 27 |
| 25 #include <string> | 28 #include <string> |
| 26 #include <utility> | 29 #include <utility> |
| 27 #include <vector> | 30 #include <vector> |
| 28 | 31 |
| 29 #include "base/callback.h" | 32 #include "base/callback.h" |
| 30 #include "base/macros.h" | 33 #include "base/macros.h" |
| 31 #include "base/memory/scoped_ptr.h" | 34 #include "base/memory/scoped_ptr.h" |
| 32 #include "base/memory/scoped_vector.h" | 35 #include "base/memory/scoped_vector.h" |
| 33 #include "base/threading/thread.h" | 36 #include "base/threading/thread.h" |
| 34 #include "media/base/audio_decoder_config.h" | 37 #include "media/base/audio_decoder_config.h" |
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| 328 | 331 |
| 329 // NOTE: Weak pointers must be invalidated before all other member variables. | 332 // NOTE: Weak pointers must be invalidated before all other member variables. |
| 330 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; | 333 base::WeakPtrFactory<FFmpegDemuxer> weak_factory_; |
| 331 | 334 |
| 332 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); | 335 DISALLOW_COPY_AND_ASSIGN(FFmpegDemuxer); |
| 333 }; | 336 }; |
| 334 | 337 |
| 335 } // namespace media | 338 } // namespace media |
| 336 | 339 |
| 337 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ | 340 #endif // MEDIA_FILTERS_FFMPEG_DEMUXER_H_ |
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