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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 #ifndef MEDIA_FILTERS_CHUNK_DEMUXER_H_ | 5 #ifndef MEDIA_FILTERS_CHUNK_DEMUXER_H_ |
6 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_ | 6 #define MEDIA_FILTERS_CHUNK_DEMUXER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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26 #include "media/filters/source_buffer_stream.h" | 26 #include "media/filters/source_buffer_stream.h" |
27 | 27 |
28 namespace media { | 28 namespace media { |
29 | 29 |
30 class FFmpegURLProtocol; | 30 class FFmpegURLProtocol; |
31 | 31 |
32 class MEDIA_EXPORT ChunkDemuxerStream : public DemuxerStream { | 32 class MEDIA_EXPORT ChunkDemuxerStream : public DemuxerStream { |
33 public: | 33 public: |
34 typedef std::deque<scoped_refptr<StreamParserBuffer> > BufferQueue; | 34 typedef std::deque<scoped_refptr<StreamParserBuffer> > BufferQueue; |
35 | 35 |
36 ChunkDemuxerStream(Type type, | 36 ChunkDemuxerStream(Type type, MediaTrack::Id media_track_id); |
37 bool splice_frames_enabled, | |
38 MediaTrack::Id media_track_id); | |
39 ~ChunkDemuxerStream() override; | 37 ~ChunkDemuxerStream() override; |
40 | 38 |
41 // ChunkDemuxerStream control methods. | 39 // ChunkDemuxerStream control methods. |
42 void StartReturningData(); | 40 void StartReturningData(); |
43 void AbortReads(); | 41 void AbortReads(); |
44 void CompletePendingReadIfPossible(); | 42 void CompletePendingReadIfPossible(); |
45 void Shutdown(); | 43 void Shutdown(); |
46 | 44 |
47 // SourceBufferStream manipulation methods. | 45 // SourceBufferStream manipulation methods. |
48 void Seek(base::TimeDelta time); | 46 void Seek(base::TimeDelta time); |
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148 | 146 |
149 Liveness liveness_; | 147 Liveness liveness_; |
150 | 148 |
151 std::unique_ptr<SourceBufferStream> stream_; | 149 std::unique_ptr<SourceBufferStream> stream_; |
152 | 150 |
153 const MediaTrack::Id media_track_id_; | 151 const MediaTrack::Id media_track_id_; |
154 | 152 |
155 mutable base::Lock lock_; | 153 mutable base::Lock lock_; |
156 State state_; | 154 State state_; |
157 ReadCB read_cb_; | 155 ReadCB read_cb_; |
158 bool splice_frames_enabled_; | |
159 bool partial_append_window_trimming_enabled_; | 156 bool partial_append_window_trimming_enabled_; |
160 bool is_enabled_; | 157 bool is_enabled_; |
161 StreamStatusChangeCB stream_status_change_cb_; | 158 StreamStatusChangeCB stream_status_change_cb_; |
162 | 159 |
163 DISALLOW_IMPLICIT_CONSTRUCTORS(ChunkDemuxerStream); | 160 DISALLOW_IMPLICIT_CONSTRUCTORS(ChunkDemuxerStream); |
164 }; | 161 }; |
165 | 162 |
166 // Demuxer implementation that allows chunks of media data to be passed | 163 // Demuxer implementation that allows chunks of media data to be passed |
167 // from JavaScript to the media stack. | 164 // from JavaScript to the media stack. |
168 class MEDIA_EXPORT ChunkDemuxer : public Demuxer { | 165 class MEDIA_EXPORT ChunkDemuxer : public Demuxer { |
169 public: | 166 public: |
170 enum Status { | 167 enum Status { |
171 kOk, // ID added w/o error. | 168 kOk, // ID added w/o error. |
172 kNotSupported, // Type specified is not supported. | 169 kNotSupported, // Type specified is not supported. |
173 kReachedIdLimit, // Reached ID limit. We can't handle any more IDs. | 170 kReachedIdLimit, // Reached ID limit. We can't handle any more IDs. |
174 }; | 171 }; |
175 | 172 |
176 // |open_cb| Run when Initialize() is called to signal that the demuxer | 173 // |open_cb| Run when Initialize() is called to signal that the demuxer |
177 // is ready to receive media data via AppenData(). | 174 // is ready to receive media data via AppenData(). |
178 // |encrypted_media_init_data_cb| Run when the demuxer determines that an | 175 // |encrypted_media_init_data_cb| Run when the demuxer determines that an |
179 // encryption key is needed to decrypt the content. | 176 // encryption key is needed to decrypt the content. |
180 // |media_log| Used to report content and engine debug messages. | 177 // |media_log| Used to report content and engine debug messages. |
181 // |splice_frames_enabled| Indicates that it's okay to generate splice frames | |
182 // per the MSE specification. Renderers must understand DecoderBuffer's | |
183 // splice_timestamp() field. | |
184 ChunkDemuxer(const base::Closure& open_cb, | 178 ChunkDemuxer(const base::Closure& open_cb, |
185 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, | 179 const EncryptedMediaInitDataCB& encrypted_media_init_data_cb, |
186 const scoped_refptr<MediaLog>& media_log, | 180 const scoped_refptr<MediaLog>& media_log); |
187 bool splice_frames_enabled); | |
188 ~ChunkDemuxer() override; | 181 ~ChunkDemuxer() override; |
189 | 182 |
190 // Demuxer implementation. | 183 // Demuxer implementation. |
191 std::string GetDisplayName() const override; | 184 std::string GetDisplayName() const override; |
192 | 185 |
193 // |enable_text| Process inband text tracks in the normal way when true, | 186 // |enable_text| Process inband text tracks in the normal way when true, |
194 // otherwise ignore them. | 187 // otherwise ignore them. |
195 void Initialize(DemuxerHost* host, | 188 void Initialize(DemuxerHost* host, |
196 const PipelineStatusCB& cb, | 189 const PipelineStatusCB& cb, |
197 bool enable_text_tracks) override; | 190 bool enable_text_tracks) override; |
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429 | 422 |
430 typedef std::map<std::string, MediaSourceState*> MediaSourceStateMap; | 423 typedef std::map<std::string, MediaSourceState*> MediaSourceStateMap; |
431 MediaSourceStateMap source_state_map_; | 424 MediaSourceStateMap source_state_map_; |
432 | 425 |
433 // Used to ensure that (1) config data matches the type and codec provided in | 426 // Used to ensure that (1) config data matches the type and codec provided in |
434 // AddId(), (2) only 1 audio and 1 video sources are added, and (3) ids may be | 427 // AddId(), (2) only 1 audio and 1 video sources are added, and (3) ids may be |
435 // removed with RemoveID() but can not be re-added (yet). | 428 // removed with RemoveID() but can not be re-added (yet). |
436 std::string source_id_audio_; | 429 std::string source_id_audio_; |
437 std::string source_id_video_; | 430 std::string source_id_video_; |
438 | 431 |
439 // Indicates that splice frame generation is enabled. | |
440 const bool splice_frames_enabled_; | |
441 | |
442 // Accumulate, by type, detected track counts across the SourceBuffers. | 432 // Accumulate, by type, detected track counts across the SourceBuffers. |
443 int detected_audio_track_count_; | 433 int detected_audio_track_count_; |
444 int detected_video_track_count_; | 434 int detected_video_track_count_; |
445 int detected_text_track_count_; | 435 int detected_text_track_count_; |
446 | 436 |
447 std::map<MediaTrack::Id, const DemuxerStream*> track_id_to_demux_stream_map_; | 437 std::map<MediaTrack::Id, const DemuxerStream*> track_id_to_demux_stream_map_; |
448 | 438 |
449 DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer); | 439 DISALLOW_COPY_AND_ASSIGN(ChunkDemuxer); |
450 }; | 440 }; |
451 | 441 |
452 } // namespace media | 442 } // namespace media |
453 | 443 |
454 #endif // MEDIA_FILTERS_CHUNK_DEMUXER_H_ | 444 #endif // MEDIA_FILTERS_CHUNK_DEMUXER_H_ |
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