OLD | NEW |
1 /* | 1 /* |
2 * Copyright (C) 2010, Google Inc. All rights reserved. | 2 * Copyright (C) 2010, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
(...skipping 201 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
212 #endif | 212 #endif |
213 using AutoLocker = DeferredTaskHandler::AutoLocker; | 213 using AutoLocker = DeferredTaskHandler::AutoLocker; |
214 | 214 |
215 // Returns the maximum numuber of channels we can support. | 215 // Returns the maximum numuber of channels we can support. |
216 static unsigned maxNumberOfChannels() { return MaxNumberOfChannels;} | 216 static unsigned maxNumberOfChannels() { return MaxNumberOfChannels;} |
217 | 217 |
218 // EventTarget | 218 // EventTarget |
219 virtual const AtomicString& interfaceName() const override final; | 219 virtual const AtomicString& interfaceName() const override final; |
220 virtual ExecutionContext* executionContext() const override final; | 220 virtual ExecutionContext* executionContext() const override final; |
221 | 221 |
222 DEFINE_ATTRIBUTE_EVENT_LISTENER(complete); | |
223 DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange); | 222 DEFINE_ATTRIBUTE_EVENT_LISTENER(statechange); |
224 | 223 |
225 void startRendering(); | 224 void startRendering(); |
226 void fireCompletionEvent(); | |
227 void notifyStateChange(); | 225 void notifyStateChange(); |
228 | 226 |
229 // A context is considered closed if: | 227 // A context is considered closed if: |
230 // - closeContext() has been called, even if the audio HW has not yet been | 228 // - closeContext() has been called, even if the audio HW has not yet been |
231 // stopped. It will be stopped eventually. | 229 // stopped. It will be stopped eventually. |
232 // - it has been stopped (or is stopping) by its execution context. | 230 // - it has been stopped (or is stopping) by its execution context. |
233 bool isContextClosed() const { return m_closeResolver || m_isStopScheduled |
| m_isCleared; } | 231 bool isContextClosed() const { return m_closeResolver || m_isStopScheduled |
| m_isCleared; } |
234 | 232 |
235 static unsigned s_hardwareContextCount; | 233 static unsigned s_hardwareContextCount; |
236 static unsigned s_contextId; | 234 static unsigned s_contextId; |
237 | 235 |
238 // Get the security origin for this audio context. | 236 // Get the security origin for this audio context. |
239 SecurityOrigin* securityOrigin() const; | 237 SecurityOrigin* securityOrigin() const; |
240 | 238 |
| 239 // TODO: Refactoring needed. These are OfflineAudioContext-specific tasks. |
| 240 virtual void fireCompletionEvent(); |
| 241 virtual bool shouldSuspendNow(); |
| 242 virtual void resolvePendingSuspendPromises(); |
| 243 AudioBuffer* renderTarget() const { return m_renderTarget.get(); } |
| 244 |
241 protected: | 245 protected: |
242 explicit AudioContext(Document*); | 246 explicit AudioContext(Document*); |
243 AudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, fl
oat sampleRate); | 247 AudioContext(Document*, unsigned numberOfChannels, size_t numberOfFrames, fl
oat sampleRate); |
244 | 248 |
245 RefPtrWillBeMember<ScriptPromiseResolver> m_offlineResolver; | 249 // Shared with OfflineAudioContext. |
| 250 void setContextState(AudioContextState); |
| 251 |
246 private: | 252 private: |
247 void initialize(); | 253 void initialize(); |
248 void uninitialize(); | 254 void uninitialize(); |
249 | 255 |
250 // ExecutionContext calls stop twice. | 256 // ExecutionContext calls stop twice. |
251 // We'd like to schedule only one stop action for them. | 257 // We'd like to schedule only one stop action for them. |
252 bool m_isStopScheduled; | 258 bool m_isStopScheduled; |
253 bool m_isCleared; | 259 bool m_isCleared; |
254 void clear(); | 260 void clear(); |
255 | 261 |
(...skipping 44 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
300 // Graph locking. | 306 // Graph locking. |
301 bool m_didInitializeContextGraphMutex; | 307 bool m_didInitializeContextGraphMutex; |
302 RefPtr<DeferredTaskHandler> m_deferredTaskHandler; | 308 RefPtr<DeferredTaskHandler> m_deferredTaskHandler; |
303 | 309 |
304 Member<AudioBuffer> m_renderTarget; | 310 Member<AudioBuffer> m_renderTarget; |
305 | 311 |
306 bool m_isOfflineContext; | 312 bool m_isOfflineContext; |
307 | 313 |
308 // The state of the AudioContext. | 314 // The state of the AudioContext. |
309 AudioContextState m_contextState; | 315 AudioContextState m_contextState; |
310 void setContextState(AudioContextState); | |
311 | 316 |
312 AsyncAudioDecoder m_audioDecoder; | 317 AsyncAudioDecoder m_audioDecoder; |
313 | 318 |
314 // The Promise that is returned by close(); | 319 // The Promise that is returned by close(); |
315 RefPtrWillBeMember<ScriptPromiseResolver> m_closeResolver; | 320 RefPtrWillBeMember<ScriptPromiseResolver> m_closeResolver; |
316 | 321 |
317 // Tries to handle AudioBufferSourceNodes that were started but became disco
nnected or was never | 322 // Tries to handle AudioBufferSourceNodes that were started but became disco
nnected or was never |
318 // connected. Because these never get pulled anymore, they will stay around
forever. So if we | 323 // connected. Because these never get pulled anymore, they will stay around
forever. So if we |
319 // can, try to stop them so they can be collected. | 324 // can, try to stop them so they can be collected. |
320 void handleStoppableSourceNodes(); | 325 void handleStoppableSourceNodes(); |
321 | 326 |
| 327 // Perform common tasks after the render quantum. Called by handlePostRender
Tasks(). |
| 328 void performPostRenderTasks(); |
| 329 |
322 // This is considering 32 is large enough for multiple channels audio. | 330 // This is considering 32 is large enough for multiple channels audio. |
323 // It is somewhat arbitrary and could be increased if necessary. | 331 // It is somewhat arbitrary and could be increased if necessary. |
324 enum { MaxNumberOfChannels = 32 }; | 332 enum { MaxNumberOfChannels = 32 }; |
325 | 333 |
326 unsigned m_contextId; | 334 unsigned m_contextId; |
327 }; | 335 }; |
328 | 336 |
329 } // namespace blink | 337 } // namespace blink |
330 | 338 |
331 #endif // AudioContext_h | 339 #endif // AudioContext_h |
OLD | NEW |