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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 // Audio rendering unit utilizing an AudioRendererSink to output data. | 5 // Audio rendering unit utilizing an AudioRendererSink to output data. |
6 // | 6 // |
7 // This class lives inside three threads during it's lifetime, namely: | 7 // This class lives inside three threads during it's lifetime, namely: |
8 // 1. Render thread | 8 // 1. Render thread |
9 // Where the object is created. | 9 // Where the object is created. |
10 // 2. Media thread (provided via constructor) | 10 // 2. Media thread (provided via constructor) |
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215 PipelineStatusCB error_cb_; | 215 PipelineStatusCB error_cb_; |
216 | 216 |
217 // Callback provided to Flush(). | 217 // Callback provided to Flush(). |
218 base::Closure flush_cb_; | 218 base::Closure flush_cb_; |
219 | 219 |
220 // After Initialize() has completed, all variables below must be accessed | 220 // After Initialize() has completed, all variables below must be accessed |
221 // under |lock_|. ------------------------------------------------------------ | 221 // under |lock_|. ------------------------------------------------------------ |
222 base::Lock lock_; | 222 base::Lock lock_; |
223 | 223 |
224 // Algorithm for scaling audio. | 224 // Algorithm for scaling audio. |
| 225 float playback_rate_; |
225 scoped_ptr<AudioRendererAlgorithm> algorithm_; | 226 scoped_ptr<AudioRendererAlgorithm> algorithm_; |
226 | 227 |
227 // Simple state tracking variable. | 228 // Simple state tracking variable. |
228 State state_; | 229 State state_; |
229 | 230 |
230 BufferingState buffering_state_; | 231 BufferingState buffering_state_; |
231 | 232 |
232 // Keep track of whether or not the sink is playing and whether we should be | 233 // Keep track of whether or not the sink is playing and whether we should be |
233 // rendering. | 234 // rendering. |
234 bool rendering_; | 235 bool rendering_; |
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249 | 250 |
250 // NOTE: Weak pointers must be invalidated before all other member variables. | 251 // NOTE: Weak pointers must be invalidated before all other member variables. |
251 base::WeakPtrFactory<AudioRendererImpl> weak_factory_; | 252 base::WeakPtrFactory<AudioRendererImpl> weak_factory_; |
252 | 253 |
253 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl); | 254 DISALLOW_COPY_AND_ASSIGN(AudioRendererImpl); |
254 }; | 255 }; |
255 | 256 |
256 } // namespace media | 257 } // namespace media |
257 | 258 |
258 #endif // MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_ | 259 #endif // MEDIA_FILTERS_AUDIO_RENDERER_IMPL_H_ |
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