OLD | NEW |
---|---|
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 |
(...skipping 13 matching lines...) Expand all Loading... | |
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/ThreadSafeFunctional.h" | |
34 #include "platform/audio/AudioUtilities.h" | 37 #include "platform/audio/AudioUtilities.h" |
38 #include "public/platform/Platform.h" | |
35 | 39 |
36 namespace blink { | 40 namespace blink { |
37 | 41 |
38 OfflineAudioContext* OfflineAudioContext::create(ExecutionContext* context, unsi gned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState) | 42 OfflineAudioContext* OfflineAudioContext::create(ExecutionContext* context, unsi gned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState) |
39 { | 43 { |
40 // FIXME: add support for workers. | 44 // FIXME: add support for workers. |
41 if (!context || !context->isDocument()) { | 45 if (!context || !context->isDocument()) { |
42 exceptionState.throwDOMException( | 46 exceptionState.throwDOMException( |
43 NotSupportedError, | 47 NotSupportedError, |
44 "Workers are not supported."); | 48 "Workers are not supported."); |
(...skipping 40 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
85 + ", " + String::number(sampleRate) | 89 + ", " + String::number(sampleRate) |
86 + ")"); | 90 + ")"); |
87 } | 91 } |
88 | 92 |
89 audioContext->suspendIfNeeded(); | 93 audioContext->suspendIfNeeded(); |
90 return audioContext; | 94 return audioContext; |
91 } | 95 } |
92 | 96 |
93 OfflineAudioContext::OfflineAudioContext(Document* document, unsigned numberOfCh annels, size_t numberOfFrames, float sampleRate) | 97 OfflineAudioContext::OfflineAudioContext(Document* document, unsigned numberOfCh annels, size_t numberOfFrames, float sampleRate) |
94 : AudioContext(document, numberOfChannels, numberOfFrames, sampleRate) | 98 : AudioContext(document, numberOfChannels, numberOfFrames, sampleRate) |
99 , m_isRenderingStarted(false) | |
95 { | 100 { |
101 m_totalRenderFrames = numberOfFrames; | |
Raymond Toy
2015/05/28 16:37:35
Why not move this to the initializer part?
hongchan
2015/06/09 20:49:59
Done.
| |
96 } | 102 } |
97 | 103 |
98 OfflineAudioContext::~OfflineAudioContext() | 104 OfflineAudioContext::~OfflineAudioContext() |
99 { | 105 { |
100 } | 106 } |
101 | 107 |
108 // FIXME: What should be done to trace members in OfflineAudioContext? | |
109 // DEFINE_TRACE(OfflineAudioContext) | |
110 // { | |
111 // visitor->trace(m_scheduledSuspends); | |
112 // visitor->trace(m_completeResolver); | |
113 // } | |
114 | |
115 OfflineAudioContext::ScheduledSuspendContainer::ScheduledSuspendContainer( | |
116 size_t when, PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver) | |
Raymond Toy
2015/05/28 16:37:35
I think frame is better than when.
hongchan
2015/06/09 20:49:59
Done.
| |
117 : m_when(when) | |
118 , m_resolver(resolver) | |
119 { | |
120 } | |
121 | |
122 OfflineAudioContext::ScheduledSuspendContainer::~ScheduledSuspendContainer() | |
123 { | |
124 } | |
125 | |
126 DEFINE_TRACE(OfflineAudioContext::ScheduledSuspendContainer) | |
127 { | |
128 visitor->trace(m_resolver); | |
129 } | |
130 | |
131 PassOwnPtr<OfflineAudioContext::ScheduledSuspendContainer> | |
132 OfflineAudioContext::ScheduledSuspendContainer::create( | |
133 size_t when, PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver) | |
134 { | |
135 return adoptPtr(new ScheduledSuspendContainer(when, resolver)); | |
136 } | |
137 | |
138 bool OfflineAudioContext::ScheduledSuspendContainer::shouldSuspendAt(size_t when ) const | |
139 { | |
140 return m_when == when; | |
141 } | |
142 | |
143 bool OfflineAudioContext::shouldSuspendNow() | |
144 { | |
145 ASSERT(!isMainThread()); | |
146 | |
147 // Suspend if necessary and resolve the associated promise. | |
148 size_t now = currentSampleFrame(); | |
149 for (unsigned index = 0; index < m_scheduledSuspends.size(); ++index) { | |
150 if (m_scheduledSuspends.at(index)->shouldSuspendAt(now)) { | |
151 // Resolve the scheduled suspend on the main thread. (async) | |
152 Platform::current()->mainThread()->postTask(FROM_HERE, | |
153 threadSafeBind( | |
154 &OfflineAudioContext::resolveSuspendOnMainThread, | |
155 this, | |
156 index)); | |
Raymond Toy
2015/05/28 16:37:36
I think we have a problem here. If the main threa
hongchan
2015/06/09 20:49:59
Done. However, the post render task happens every
| |
157 return true; | |
158 } | |
159 } | |
160 | |
161 return false; | |
162 } | |
163 | |
164 void OfflineAudioContext::fireCompletionEvent() | |
165 { | |
166 ASSERT(isMainThread()); | |
167 if (!isMainThread()) | |
168 return; | |
169 | |
170 // We set the state to closed here so that the oncomplete event handler sees | |
171 // that the context has been closed. | |
172 setContextState(Closed); | |
173 | |
174 AudioBuffer* renderedBuffer = m_renderTarget.get(); | |
175 | |
176 ASSERT(renderedBuffer); | |
177 if (!renderedBuffer) | |
178 return; | |
179 | |
180 // Avoid firing the event if the document has already gone away. | |
181 if (executionContext()) { | |
182 // Call the offline rendering completion event listener and resolve the | |
183 // promise too. | |
184 dispatchEvent(OfflineAudioCompletionEvent::create(renderedBuffer)); | |
185 m_completeResolver->resolve(renderedBuffer); | |
186 } | |
187 } | |
188 | |
102 ScriptPromise OfflineAudioContext::startOfflineRendering(ScriptState* scriptStat e) | 189 ScriptPromise OfflineAudioContext::startOfflineRendering(ScriptState* scriptStat e) |
103 { | 190 { |
191 ASSERT(isMainThread()); | |
192 | |
193 // FIXME: This check causes crash on oac-detached-no-crash.html | |
194 // ASSERT(m_destinationNode); | |
Raymond Toy
2015/05/28 16:37:36
We'll have to fix this before landing this CL.
hongchan
2015/06/09 20:49:59
Acknowledged.
| |
195 | |
196 AutoLocker locker(this); | |
197 | |
104 // Calling close() on an OfflineAudioContext is not supported/allowed, | 198 // Calling close() on an OfflineAudioContext is not supported/allowed, |
105 // but it might well have been stopped by its execution context. | 199 // but it might well have been stopped by its execution context. |
106 if (isContextClosed()) { | 200 if (isContextClosed()) { |
107 return ScriptPromise::rejectWithDOMException( | 201 return ScriptPromise::rejectWithDOMException( |
108 scriptState, | 202 scriptState, |
109 DOMException::create( | 203 DOMException::create( |
110 InvalidStateError, | 204 InvalidStateError, |
111 "cannot call startRendering on an OfflineAudioContext in a stopp ed state.")); | 205 "cannot call startRendering on an OfflineAudioContext in a stopp ed state.")); |
112 } | 206 } |
113 | 207 |
114 if (m_offlineResolver) { | 208 if (m_completeResolver) { |
115 // Can't call startRendering more than once. Return a rejected promise now. | 209 // Can't call startRendering more than once. Return a rejected promise now. |
116 return ScriptPromise::rejectWithDOMException( | 210 return ScriptPromise::rejectWithDOMException( |
117 scriptState, | 211 scriptState, |
118 DOMException::create( | 212 DOMException::create( |
119 InvalidStateError, | 213 InvalidStateError, |
120 "cannot call startRendering more than once")); | 214 "cannot call startRendering more than once")); |
121 } | 215 } |
122 | 216 |
123 m_offlineResolver = ScriptPromiseResolver::create(scriptState); | 217 m_completeResolver = ScriptPromiseResolver::create(scriptState); |
124 startRendering(); | 218 |
125 return m_offlineResolver->promise(); | 219 if (contextState() == AudioContextState::Suspended) { |
220 // If the context state is valid (Suspended), star rendering and return | |
Raymond Toy
2015/05/28 16:37:35
I think the code is easier to understand if you ha
hongchan
2015/06/09 20:49:59
Done.
| |
221 // the promise. | |
222 destination()->audioDestinationHandler().startRendering(); | |
223 m_isRenderingStarted = true; | |
224 setContextState(Running); | |
225 return m_completeResolver->promise(); | |
226 } | |
227 | |
228 // If the context is not in a valid state, reject promise. | |
229 return ScriptPromise::rejectWithDOMException( | |
230 scriptState, | |
231 DOMException::create( | |
232 InvalidStateError, | |
233 "invalid context state")); | |
Raymond Toy
2015/05/28 16:37:35
Use better error message saying why this is invali
hongchan
2015/06/09 20:49:59
Done.
| |
234 } | |
235 | |
236 ScriptPromise OfflineAudioContext::suspendOfflineRendering(ScriptState* scriptSt ate, double when) | |
237 { | |
238 ASSERT(isMainThread()); | |
239 | |
240 AutoLocker locker(this); | |
241 | |
242 // Quantize the suspend time based on the rendering block boundary. | |
243 unsigned quantizedFrame = destination()->audioDestinationHandler().quantizeT ime(when); | |
244 | |
245 if (isValidToScheduleAt(quantizedFrame)) { | |
246 RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolv er::create(scriptState); | |
247 ScriptPromise promise = resolver->promise(); | |
248 m_scheduledSuspends.append(ScheduledSuspendContainer::create(quantizedFr ame, resolver)); | |
249 | |
250 return promise; | |
251 } | |
252 | |
253 // If suspendTime is already passed, reject the promise and throw an excepti on. | |
254 return ScriptPromise::rejectWithDOMException( | |
255 scriptState, | |
256 DOMException::create( | |
257 InvalidStateError, | |
258 "cannot schedule a suspend in the past, beyond the total render dura tion or at the duplicate position.")); | |
Raymond Toy
2015/05/28 16:37:36
Can we provide more information here?
hongchan
2015/06/09 20:49:59
I broke this down into multiple checks and rejecti
| |
259 } | |
260 | |
261 ScriptPromise OfflineAudioContext::resumeOfflineRendering(ScriptState* scriptSta te) | |
262 { | |
263 ASSERT(isMainThread()); | |
264 | |
265 AutoLocker locker(this); | |
266 | |
267 // If the context is suspended, resume rendering by calling startRendering() | |
268 // and set the state to "Running." Note that resuming is possible only after | |
269 // the rendering started. | |
270 if (contextState() == AudioContextState::Suspended && m_isRenderingStarted) { | |
Raymond Toy
2015/05/28 16:37:35
I think it's easier to understand if you reverse t
hongchan
2015/06/09 20:49:59
Done.
| |
271 destination()->audioDestinationHandler().startRendering(); | |
272 setContextState(Running); | |
273 | |
274 RefPtrWillBeRawPtr<ScriptPromiseResolver> resolver = ScriptPromiseResolv er::create(scriptState); | |
275 ScriptPromise promise = resolver->promise(); | |
276 | |
277 // Resolve the promise immediately. | |
278 resolver->resolve(); | |
279 | |
280 return promise; | |
281 } | |
282 | |
283 // If the rendering is already running or not started, reject the promise. | |
284 return ScriptPromise::rejectWithDOMException( | |
285 scriptState, | |
286 DOMException::create( | |
287 InvalidStateError, | |
288 "cannot resume the context is already running or has not started")); | |
Raymond Toy
2015/05/28 16:37:36
Can we have a more specific message? We know exac
hongchan
2015/06/09 20:49:59
I separate this into two checks and rejections as
| |
289 } | |
290 | |
291 void OfflineAudioContext::resolveSuspendOnMainThread(unsigned index) | |
292 { | |
293 ASSERT(isMainThread()); | |
294 | |
295 // FIXME: This process (removing suspend from the list) should be | |
Raymond Toy
2015/05/28 16:37:35
Why does this need fixing?
hongchan
2015/06/09 20:49:59
First, the location of this comment is wrong, so I
| |
296 // synchronous. | |
297 | |
298 AutoLocker locker(this); | |
299 | |
300 // Suspend the context first. This will fire onstatechange event. | |
301 setContextState(Suspended); | |
302 | |
303 // Resolve the suspend and remove it from the list. | |
304 // FIXME: is removing an element efficient? What if there are 10K suspends? | |
305 m_scheduledSuspends.at(index)->resolver()->resolve(); | |
306 m_scheduledSuspends.remove(index); | |
307 } | |
308 | |
309 bool OfflineAudioContext::isValidToScheduleAt(size_t when) | |
310 { | |
311 // The specified suspend time should be between the current frame and the | |
312 // total render frame. | |
313 bool isInValidRange = currentSampleFrame() < when && when < m_totalRenderFra mes; | |
314 | |
315 // Also there should be no duplicate in the existing scheduled suspends. | |
316 bool isDuplicate = false; | |
317 for (unsigned index = 0; index < m_scheduledSuspends.size(); ++index) { | |
318 if (m_scheduledSuspends.at(index)->shouldSuspendAt(when)) | |
319 isDuplicate = true; | |
320 } | |
321 | |
322 return isInValidRange && !isDuplicate; | |
126 } | 323 } |
127 | 324 |
128 } // namespace blink | 325 } // namespace blink |
129 | 326 |
130 #endif // ENABLE(WEB_AUDIO) | 327 #endif // ENABLE(WEB_AUDIO) |
OLD | NEW |