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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, 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 |
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24 | 24 |
25 #include "config.h" | 25 #include "config.h" |
26 #if ENABLE(WEB_AUDIO) | 26 #if ENABLE(WEB_AUDIO) |
27 #include "modules/webaudio/OfflineAudioContext.h" | 27 #include "modules/webaudio/OfflineAudioContext.h" |
28 | 28 |
29 #include "bindings/core/v8/ExceptionMessages.h" | 29 #include "bindings/core/v8/ExceptionMessages.h" |
30 #include "bindings/core/v8/ExceptionState.h" | 30 #include "bindings/core/v8/ExceptionState.h" |
31 #include "core/dom/Document.h" | 31 #include "core/dom/Document.h" |
32 #include "core/dom/ExceptionCode.h" | 32 #include "core/dom/ExceptionCode.h" |
33 #include "core/dom/ExecutionContext.h" | 33 #include "core/dom/ExecutionContext.h" |
34 #include "modules/webaudio/OfflineAudioCompletionEvent.h" | |
35 #include "modules/webaudio/OfflineAudioDestinationNode.h" | |
36 #include "platform/Task.h" | |
37 #include "platform/ThreadSafeFunctional.h" | |
34 #include "platform/audio/AudioUtilities.h" | 38 #include "platform/audio/AudioUtilities.h" |
39 #include "public/platform/Platform.h" | |
40 | |
35 | 41 |
36 namespace blink { | 42 namespace blink { |
37 | 43 |
38 OfflineAudioContext* OfflineAudioContext::create(ExecutionContext* context, unsi gned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState) | 44 OfflineAudioContext* OfflineAudioContext::create(ExecutionContext* context, unsi gned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState) |
39 { | 45 { |
40 // FIXME: add support for workers. | 46 // FIXME: add support for workers. |
41 if (!context || !context->isDocument()) { | 47 if (!context || !context->isDocument()) { |
42 exceptionState.throwDOMException( | 48 exceptionState.throwDOMException( |
43 NotSupportedError, | 49 NotSupportedError, |
44 "Workers are not supported."); | 50 "Workers are not supported."); |
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85 + ", " + String::number(sampleRate) | 91 + ", " + String::number(sampleRate) |
86 + ")"); | 92 + ")"); |
87 } | 93 } |
88 | 94 |
89 audioContext->suspendIfNeeded(); | 95 audioContext->suspendIfNeeded(); |
90 return audioContext; | 96 return audioContext; |
91 } | 97 } |
92 | 98 |
93 OfflineAudioContext::OfflineAudioContext(Document* document, unsigned numberOfCh annels, size_t numberOfFrames, float sampleRate) | 99 OfflineAudioContext::OfflineAudioContext(Document* document, unsigned numberOfCh annels, size_t numberOfFrames, float sampleRate) |
94 : AudioContext(document, numberOfChannels, numberOfFrames, sampleRate) | 100 : AudioContext(document, numberOfChannels, numberOfFrames, sampleRate) |
101 , m_isRenderingStarted(false) | |
102 , m_isResolvingSuspendPromise(false) | |
103 , m_totalRenderFrames(numberOfFrames) | |
95 { | 104 { |
96 } | 105 } |
97 | 106 |
98 OfflineAudioContext::~OfflineAudioContext() | 107 OfflineAudioContext::~OfflineAudioContext() |
99 { | 108 { |
100 } | 109 } |
101 | 110 |
111 DEFINE_TRACE(OfflineAudioContext) | |
112 { | |
113 visitor->trace(m_scheduledSuspends); | |
hongchan
2015/06/24 21:14:12
This gives me a compile error:
./../third_party/W
haraken
2015/06/24 23:25:57
m_scheduledSuspends is not a HashMap of Oilpan. Yo
hongchan
2015/06/25 23:34:13
Done.
| |
114 visitor->trace(m_completeResolver); | |
115 AudioContext::trace(visitor); | |
116 } | |
117 | |
118 bool OfflineAudioContext::shouldSuspendNow() | |
119 { | |
120 ASSERT(!isMainThread()); | |
121 | |
122 fprintf(stderr, "shouldSuspendNow\n"); | |
123 | |
124 // If there is any scheduled suspend at |currentSampleFrame|, the context | |
125 // should be suspended. | |
126 if (m_scheduledSuspends.contains(currentSampleFrame())) | |
127 return true; | |
128 | |
129 return false; | |
130 } | |
131 | |
132 void OfflineAudioContext::resolvePendingSuspendPromises() | |
133 { | |
134 ASSERT(!isMainThread()); | |
135 | |
136 fprintf(stderr, "resolvePendingSuspendPromises\n"); | |
137 | |
138 if (!m_isResolvingSuspendPromise || m_scheduledSuspends.isEmpty()) | |
139 return; | |
140 | |
141 size_t nowFrame = currentSampleFrame(); | |
142 | |
143 SuspendContainerMap::iterator it = m_scheduledSuspends.find(nowFrame); | |
144 if (it == m_scheduledSuspends.end()) | |
145 return; | |
146 | |
147 RefPtrWillBeRawPtr<ScheduledSuspendContainer> suspendContainer = it->value; | |
yhirano
2015/06/25 04:00:53
This should be just RefPtr.
hongchan
2015/06/25 23:34:13
Done.
| |
148 Platform::current()->mainThread()->postTask(FROM_HERE, | |
149 threadSafeBind(&OfflineAudioContext::resolvePendingSuspendPromisesOnMain Thread, this, suspendContainer)); | |
yhirano
2015/06/25 04:00:53
suspendContainer.release()
hongchan
2015/06/25 23:34:13
Done.
| |
150 m_scheduledSuspends.remove(nowFrame); | |
yhirano
2015/06/25 04:00:52
Please move this statement to L148.
yhirano
2015/06/25 04:00:53
[optional] remove(it) may be more straightforward?
hongchan
2015/06/25 23:34:13
Done and done.
| |
151 } | |
152 | |
153 void OfflineAudioContext::fireCompletionEvent() | |
154 { | |
155 ASSERT(isMainThread()); | |
156 | |
157 // We set the state to closed here so that the oncomplete event handler sees | |
158 // that the context has been closed. | |
159 setContextState(Closed); | |
160 | |
161 AudioBuffer* renderedBuffer = renderTarget(); | |
162 | |
163 ASSERT(renderedBuffer); | |
164 if (!renderedBuffer) | |
165 return; | |
166 | |
167 // Avoid firing the event if the document has already gone away. | |
168 if (executionContext()) { | |
169 // Call the offline rendering completion event listener and resolve the | |
170 // promise too. | |
171 dispatchEvent(OfflineAudioCompletionEvent::create(renderedBuffer)); | |
172 m_completeResolver->resolve(renderedBuffer); | |
173 } | |
174 } | |
175 | |
102 ScriptPromise OfflineAudioContext::startOfflineRendering(ScriptState* scriptStat e) | 176 ScriptPromise OfflineAudioContext::startOfflineRendering(ScriptState* scriptStat e) |
103 { | 177 { |
178 ASSERT(isMainThread()); | |
179 | |
104 // Calling close() on an OfflineAudioContext is not supported/allowed, | 180 // Calling close() on an OfflineAudioContext is not supported/allowed, |
105 // but it might well have been stopped by its execution context. | 181 // but it might well have been stopped by its execution context. |
106 if (isContextClosed()) { | 182 if (isContextClosed()) { |
107 return ScriptPromise::rejectWithDOMException( | 183 return ScriptPromise::rejectWithDOMException( |
108 scriptState, | 184 scriptState, |
109 DOMException::create( | 185 DOMException::create( |
110 InvalidStateError, | 186 InvalidStateError, |
111 "cannot call startRendering on an OfflineAudioContext in a stopp ed state.")); | 187 "cannot call startRendering on an OfflineAudioContext in a stopp ed state.")); |
112 } | 188 } |
113 | 189 |
114 if (m_offlineResolver) { | 190 if (m_completeResolver) { |
115 // Can't call startRendering more than once. Return a rejected promise now. | 191 // Can't call startRendering more than once. Return a rejected promise now. |
116 return ScriptPromise::rejectWithDOMException( | 192 return ScriptPromise::rejectWithDOMException( |
117 scriptState, | 193 scriptState, |
118 DOMException::create( | 194 DOMException::create( |
119 InvalidStateError, | 195 InvalidStateError, |
120 "cannot call startRendering more than once")); | 196 "cannot call startRendering more than once")); |
121 } | 197 } |
122 | 198 |
123 m_offlineResolver = ScriptPromiseResolver::create(scriptState); | 199 // If the context is not in the suspended state, reject the promise. |
124 startRendering(); | 200 if (contextState() != AudioContextState::Suspended) { |
125 return m_offlineResolver->promise(); | 201 return ScriptPromise::rejectWithDOMException( |
202 scriptState, | |
203 DOMException::create( | |
204 InvalidStateError, | |
205 "cannot startRendering when an OfflineAudioContext is not in a s uspended state")); | |
206 } | |
207 | |
208 m_completeResolver = ScriptPromiseResolver::create(scriptState); | |
209 | |
210 // Start rendering and return the promise. | |
211 m_isRenderingStarted = true; | |
212 setContextState(Running); | |
213 destination()->audioDestinationHandler().startRendering(); | |
214 | |
215 return m_completeResolver->promise(); | |
216 } | |
217 | |
218 ScriptPromise OfflineAudioContext::suspendOfflineRendering(ScriptState* scriptSt ate, double when) | |
219 { | |
220 ASSERT(isMainThread()); | |
221 ASSERT(destination()->audioDestinationHandler().offlineRenderThread()); | |
222 | |
223 RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver:: create(scriptState); | |
224 ScriptPromise promise = resolver->promise(); | |
225 | |
226 // The specified suspend time is negative, reject the promise. | |
227 if (when < 0) { | |
228 resolver->reject(DOMException::create(InvalidStateError, | |
229 "negative suspend time (" + String::number(when) + ") is not allowed ")); | |
230 return promise; | |
231 } | |
232 | |
233 // Quantize the suspend time to the rendering block boundary. | |
234 size_t quantizedFrame = destination()->audioDestinationHandler().quantizeTim eToRenderQuantum(when); | |
235 | |
236 // The specified suspend time is in the past, reject the promise. | |
237 if (quantizedFrame < currentSampleFrame()) { | |
238 resolver->reject(DOMException::create(InvalidStateError, | |
239 "cannot schedule a suspend at frame " + String::number(quantizedFram e) + | |
240 " (" + String::number(when) + " seconds) because it is earlier than the current frame of " + | |
241 String::number(currentSampleFrame()))); | |
242 return promise; | |
243 } | |
244 | |
245 // The suspend time should be earlier than the total render frame. If the | |
246 // requested suspension time is equal to the total render frame, the promise | |
247 // will be rejected. | |
248 if (m_totalRenderFrames <= quantizedFrame) { | |
249 resolver->reject(DOMException::create(InvalidStateError, | |
250 "cannot schedule a suspend at frame " + String::number(quantizedFram e) + | |
251 " (" + String::number(when) + " seconds) because it is greater than or equal to the total render duration of " + | |
252 String::number(m_totalRenderFrames) + " frames")); | |
253 return promise; | |
254 } | |
255 | |
256 ScheduledSuspendContainer* suspendContainer = ScheduledSuspendContainer::cre ate(when, quantizedFrame, resolver); | |
yhirano
2015/06/25 04:00:52
RefPtr<ScheduledSuspendContainer> suspendContainer
hongchan
2015/06/25 23:34:13
Done.
| |
257 | |
258 // Validate the suspend and append if necessary on the render thread. | |
259 destination()->audioDestinationHandler().offlineRenderThread()->postTask(FRO M_HERE, | |
260 threadSafeBind(&OfflineAudioContext::checkDuplicateSuspend, this, suspen dContainer)); | |
261 | |
262 return promise; | |
263 } | |
264 | |
265 ScriptPromise OfflineAudioContext::resumeOfflineRendering(ScriptState* scriptSta te) | |
266 { | |
267 ASSERT(isMainThread()); | |
268 | |
269 RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolver:: create(scriptState); | |
270 ScriptPromise promise = resolver->promise(); | |
271 | |
272 // If the context is not in a suspended state, reject the promise. | |
273 if (contextState() != AudioContextState::Suspended) { | |
274 resolver->reject(DOMException::create(InvalidStateError, | |
275 "cannot resume a context that is not suspended")); | |
276 return promise; | |
277 } | |
278 | |
279 // If the rendering has not started, reject the promise. | |
280 if (!m_isRenderingStarted) { | |
281 resolver->reject(DOMException::create(InvalidStateError, | |
282 "cannot resume a context that has not started")); | |
283 return promise; | |
284 } | |
285 | |
286 // If the context is suspended, resume rendering by setting the state to | |
287 // "Running." and calling startRendering(). Note that resuming is possible | |
288 // only after the rendering started. | |
289 setContextState(Running); | |
290 destination()->audioDestinationHandler().startRendering(); | |
291 | |
292 // Resolve the promise immediately. | |
293 resolver->resolve(); | |
294 | |
295 return promise; | |
296 } | |
297 | |
298 void OfflineAudioContext::checkDuplicateSuspend(ScheduledSuspendContainer* suspe ndContainer) | |
yhirano
2015/06/25 04:00:53
PassRefPtr<ScheduledSuspendContainer>
hongchan
2015/06/25 23:34:13
Done.
| |
299 { | |
300 ASSERT(!isMainThread()); | |
301 | |
302 fprintf(stderr, "checkDuplicateSuspend\n"); | |
303 | |
304 // If there is a duplicate suspension at the same quantize frame, reject the | |
305 // promise. The rejection of promise should happen in the main thread, so we | |
306 // post a task to it. | |
307 if (m_scheduledSuspends.contains(suspendContainer->suspendFrame())) { | |
308 Platform::current()->mainThread()->postTask(FROM_HERE, | |
309 threadSafeBind(&OfflineAudioContext::rejectSuspendPromiseOnMainThrea d, this, suspendContainer)); | |
310 } | |
311 | |
312 // If duplicate check passes, we can add the container safely here in the | |
313 // render thread. | |
314 RefPtr<ScheduledSuspendContainer> adoptedContainer = adoptRef(suspendContain er); | |
yhirano
2015/06/25 04:00:53
You should not use adoptRef here.
hongchan
2015/06/25 23:34:13
Done.
| |
315 m_scheduledSuspends.set(suspendContainer->suspendFrame(), adoptedContainer); | |
hongchan
2015/06/24 21:14:12
This might be the problematic part. Since the |sus
| |
316 } | |
317 | |
318 void OfflineAudioContext::rejectSuspendPromiseOnMainThread(ScheduledSuspendConta iner* suspendContainer) | |
yhirano
2015/06/25 04:00:52
PassRefPtr<ScheduledSuspendContainer>
hongchan
2015/06/25 23:34:13
Done.
| |
319 { | |
320 ASSERT(isMainThread()); | |
321 | |
322 suspendContainer->resolver()->reject(DOMException::create(InvalidStateError, | |
323 "cannot schedule more than one suspend at frame " + | |
324 String::number(suspendContainer->suspendFrame()) + " (" + | |
325 String::number(suspendContainer->suspendTime()) + " seconds)")); | |
326 } | |
327 | |
328 void OfflineAudioContext::resolvePendingSuspendPromisesOnMainThread(ScheduledSus pendContainer* suspendContainer) | |
yhirano
2015/06/25 04:00:53
PassRefPtr<ScheduledSuspendContainer>
hongchan
2015/06/25 23:34:13
Done.
| |
329 { | |
330 ASSERT(isMainThread()); | |
331 AutoLocker locker(this); | |
332 | |
333 // Suspend the context first. This will fire onstatechange event. | |
334 setContextState(Suspended); | |
335 | |
336 suspendContainer->resolver()->resolve(); | |
337 m_isResolvingSuspendPromise = false; | |
338 } | |
339 | |
340 ScheduledSuspendContainer::ScheduledSuspendContainer( | |
341 double suspendTime, size_t suspendFrame, PassRefPtrWillBeRawPtr<ScriptPromis eResolver> resolver) | |
342 : m_suspendTime(suspendTime) | |
343 , m_suspendFrame(suspendFrame) | |
344 , m_resolver(resolver) | |
345 , m_isPending(false) | |
346 { | |
yhirano
2015/06/25 04:00:53
ASSERT(isMainThread);
hongchan
2015/06/25 23:34:13
Done.
| |
347 } | |
348 | |
349 ScheduledSuspendContainer::~ScheduledSuspendContainer() | |
350 { | |
yhirano
2015/06/25 04:00:53
ASSERT(isMainThread);
hongchan
2015/06/25 23:34:13
Done.
| |
351 } | |
352 | |
353 DEFINE_TRACE(ScheduledSuspendContainer) | |
yhirano
2015/06/25 04:00:53
No trace is needed.
hongchan
2015/06/25 23:34:13
Done.
| |
354 { | |
355 visitor->trace(m_resolver); | |
356 } | |
357 | |
358 ScheduledSuspendContainer* ScheduledSuspendContainer::create( | |
359 double suspendTime, size_t suspendFrame, PassRefPtrWillBeRawPtr<ScriptPromis eResolver> resolver) | |
360 { | |
361 return new ScheduledSuspendContainer(suspendTime, suspendFrame, resolver); | |
362 } | |
363 | |
364 bool ScheduledSuspendContainer::shouldSuspendAtFrame(size_t whenFrame) const | |
365 { | |
366 if (m_suspendFrame != whenFrame) | |
367 return false; | |
368 | |
369 return true; | |
370 } | |
371 | |
372 bool ScheduledSuspendContainer::isPending() const | |
373 { | |
374 return m_isPending; | |
375 } | |
376 | |
377 void ScheduledSuspendContainer::markAsPending() | |
378 { | |
379 m_isPending = true; | |
126 } | 380 } |
127 | 381 |
128 } // namespace blink | 382 } // namespace blink |
129 | 383 |
130 #endif // ENABLE(WEB_AUDIO) | 384 #endif // ENABLE(WEB_AUDIO) |
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