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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 |
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22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
23 */ | 23 */ |
24 | 24 |
25 #ifndef AudioContext_h | 25 #ifndef AudioContext_h |
26 #define AudioContext_h | 26 #define AudioContext_h |
27 | 27 |
28 #include "bindings/v8/ScriptWrappable.h" | 28 #include "bindings/v8/ScriptWrappable.h" |
29 #include "core/dom/ActiveDOMObject.h" | 29 #include "core/dom/ActiveDOMObject.h" |
30 #include "core/events/EventListener.h" | 30 #include "core/events/EventListener.h" |
31 #include "core/events/EventTarget.h" | 31 #include "core/events/EventTarget.h" |
32 #include "heap/Handle.h" | |
32 #include "platform/audio/AudioBus.h" | 33 #include "platform/audio/AudioBus.h" |
33 #include "modules/webaudio/AsyncAudioDecoder.h" | 34 #include "modules/webaudio/AsyncAudioDecoder.h" |
34 #include "modules/webaudio/AudioDestinationNode.h" | 35 #include "modules/webaudio/AudioDestinationNode.h" |
35 #include "wtf/HashSet.h" | 36 #include "wtf/HashSet.h" |
36 #include "wtf/MainThread.h" | 37 #include "wtf/MainThread.h" |
37 #include "wtf/OwnPtr.h" | 38 #include "wtf/OwnPtr.h" |
38 #include "wtf/PassRefPtr.h" | 39 #include "wtf/PassRefPtr.h" |
39 #include "wtf/RefCounted.h" | 40 #include "wtf/RefCounted.h" |
40 #include "wtf/RefPtr.h" | 41 #include "wtf/RefPtr.h" |
41 #include "wtf/ThreadSafeRefCounted.h" | 42 #include "wtf/ThreadSafeRefCounted.h" |
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66 class MediaStreamAudioSourceNode; | 67 class MediaStreamAudioSourceNode; |
67 class OscillatorNode; | 68 class OscillatorNode; |
68 class PannerNode; | 69 class PannerNode; |
69 class PeriodicWave; | 70 class PeriodicWave; |
70 class ScriptProcessorNode; | 71 class ScriptProcessorNode; |
71 class WaveShaperNode; | 72 class WaveShaperNode; |
72 | 73 |
73 // AudioContext is the cornerstone of the web audio API and all AudioNodes are c reated from it. | 74 // AudioContext is the cornerstone of the web audio API and all AudioNodes are c reated from it. |
74 // For thread safety between the audio thread and the main thread, it has a rend ering graph locking mechanism. | 75 // For thread safety between the audio thread and the main thread, it has a rend ering graph locking mechanism. |
75 | 76 |
76 class AudioContext : public ActiveDOMObject, public ScriptWrappable, public Thre adSafeRefCounted<AudioContext>, public EventTargetWithInlineData { | 77 class AudioContext : public ActiveDOMObject, public ScriptWrappable, public Thre adSafeRefCountedWillBeRefCountedGarbageCollected<AudioContext>, public EventTarg etWithInlineData { |
Mads Ager (chromium)
2014/03/20 08:30:00
If this is still ref counted it also still needs t
keishi
2014/03/27 07:39:37
Done.
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77 DEFINE_EVENT_TARGET_REFCOUNTING(ThreadSafeRefCounted<AudioContext>); | 78 DEFINE_EVENT_TARGET_REFCOUNTING(ThreadSafeRefCountedWillBeRefCountedGarbageC ollected<AudioContext>); |
78 public: | 79 public: |
79 // Create an AudioContext for rendering to the audio hardware. | 80 // Create an AudioContext for rendering to the audio hardware. |
80 static PassRefPtr<AudioContext> create(Document&, ExceptionState&); | 81 static PassRefPtrWillBeRawPtr<AudioContext> create(Document&, ExceptionState &); |
81 | 82 |
82 // Deprecated: create an AudioContext for offline (non-realtime) rendering. | 83 // Deprecated: create an AudioContext for offline (non-realtime) rendering. |
83 static PassRefPtr<AudioContext> create(Document&, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&); | 84 static PassRefPtrWillBeRawPtr<AudioContext> create(Document&, unsigned numbe rOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&); |
84 | 85 |
85 virtual ~AudioContext(); | 86 virtual ~AudioContext(); |
86 | 87 |
88 virtual void trace(Visitor*); | |
89 | |
87 bool isInitialized() const; | 90 bool isInitialized() const; |
88 | 91 |
89 bool isOfflineContext() { return m_isOfflineContext; } | 92 bool isOfflineContext() { return m_isOfflineContext; } |
90 | 93 |
91 // Document notification | 94 // Document notification |
92 virtual void stop() OVERRIDE FINAL; | 95 virtual void stop() OVERRIDE FINAL; |
93 | 96 |
94 AudioDestinationNode* destination() { return m_destinationNode.get(); } | 97 AudioDestinationNode* destination() { return m_destinationNode.get(); } |
95 size_t currentSampleFrame() const { return m_destinationNode->currentSampleF rame(); } | 98 size_t currentSampleFrame() const { return m_destinationNode->currentSampleF rame(); } |
96 double currentTime() const { return m_destinationNode->currentTime(); } | 99 double currentTime() const { return m_destinationNode->currentTime(); } |
97 float sampleRate() const { return m_destinationNode->sampleRate(); } | 100 float sampleRate() const { return m_destinationNode->sampleRate(); } |
98 unsigned long activeSourceCount() const { return static_cast<unsigned long>( m_activeSourceCount); } | 101 unsigned long activeSourceCount() const { return static_cast<unsigned long>( m_activeSourceCount); } |
99 | 102 |
100 void incrementActiveSourceCount(); | 103 void incrementActiveSourceCount(); |
101 void decrementActiveSourceCount(); | 104 void decrementActiveSourceCount(); |
102 | 105 |
103 PassRefPtr<AudioBuffer> createBuffer(unsigned numberOfChannels, size_t numbe rOfFrames, float sampleRate, ExceptionState&); | 106 PassRefPtrWillBeRawPtr<AudioBuffer> createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&); |
104 PassRefPtr<AudioBuffer> createBuffer(ArrayBuffer*, bool mixToMono, Exception State&); | 107 PassRefPtrWillBeRawPtr<AudioBuffer> createBuffer(ArrayBuffer*, bool mixToMon o, ExceptionState&); |
105 | 108 |
106 // Asynchronous audio file data decoding. | 109 // Asynchronous audio file data decoding. |
107 void decodeAudioData(ArrayBuffer*, PassOwnPtr<AudioBufferCallback>, PassOwnP tr<AudioBufferCallback>, ExceptionState&); | 110 void decodeAudioData(ArrayBuffer*, PassOwnPtr<AudioBufferCallback>, PassOwnP tr<AudioBufferCallback>, ExceptionState&); |
108 | 111 |
109 AudioListener* listener() { return m_listener.get(); } | 112 AudioListener* listener() { return m_listener.get(); } |
110 | 113 |
111 // The AudioNode create methods are called on the main thread (from JavaScri pt). | 114 // The AudioNode create methods are called on the main thread (from JavaScri pt). |
112 PassRefPtr<AudioBufferSourceNode> createBufferSource(); | 115 PassRefPtrWillBeRawPtr<AudioBufferSourceNode> createBufferSource(); |
113 PassRefPtr<MediaElementAudioSourceNode> createMediaElementSource(HTMLMediaEl ement*, ExceptionState&); | 116 PassRefPtrWillBeRawPtr<MediaElementAudioSourceNode> createMediaElementSource (HTMLMediaElement*, ExceptionState&); |
114 PassRefPtr<MediaStreamAudioSourceNode> createMediaStreamSource(MediaStream*, ExceptionState&); | 117 PassRefPtrWillBeRawPtr<MediaStreamAudioSourceNode> createMediaStreamSource(M ediaStream*, ExceptionState&); |
115 PassRefPtr<MediaStreamAudioDestinationNode> createMediaStreamDestination(); | 118 PassRefPtrWillBeRawPtr<MediaStreamAudioDestinationNode> createMediaStreamDes tination(); |
116 PassRefPtr<GainNode> createGain(); | 119 PassRefPtrWillBeRawPtr<GainNode> createGain(); |
117 PassRefPtr<BiquadFilterNode> createBiquadFilter(); | 120 PassRefPtrWillBeRawPtr<BiquadFilterNode> createBiquadFilter(); |
118 PassRefPtr<WaveShaperNode> createWaveShaper(); | 121 PassRefPtrWillBeRawPtr<WaveShaperNode> createWaveShaper(); |
119 PassRefPtr<DelayNode> createDelay(ExceptionState&); | 122 PassRefPtrWillBeRawPtr<DelayNode> createDelay(ExceptionState&); |
120 PassRefPtr<DelayNode> createDelay(double maxDelayTime, ExceptionState&); | 123 PassRefPtrWillBeRawPtr<DelayNode> createDelay(double maxDelayTime, Exception State&); |
121 PassRefPtr<PannerNode> createPanner(); | 124 PassRefPtrWillBeRawPtr<PannerNode> createPanner(); |
122 PassRefPtr<ConvolverNode> createConvolver(); | 125 PassRefPtrWillBeRawPtr<ConvolverNode> createConvolver(); |
123 PassRefPtr<DynamicsCompressorNode> createDynamicsCompressor(); | 126 PassRefPtrWillBeRawPtr<DynamicsCompressorNode> createDynamicsCompressor(); |
124 PassRefPtr<AnalyserNode> createAnalyser(); | 127 PassRefPtrWillBeRawPtr<AnalyserNode> createAnalyser(); |
125 PassRefPtr<ScriptProcessorNode> createScriptProcessor(ExceptionState&); | 128 PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(ExceptionS tate&); |
126 PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, Exc eptionState&); | 129 PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t buf ferSize, ExceptionState&); |
127 PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, siz e_t numberOfInputChannels, ExceptionState&); | 130 PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t buf ferSize, size_t numberOfInputChannels, ExceptionState&); |
128 PassRefPtr<ScriptProcessorNode> createScriptProcessor(size_t bufferSize, siz e_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionState&); | 131 PassRefPtrWillBeRawPtr<ScriptProcessorNode> createScriptProcessor(size_t buf ferSize, size_t numberOfInputChannels, size_t numberOfOutputChannels, ExceptionS tate&); |
129 PassRefPtr<ChannelSplitterNode> createChannelSplitter(ExceptionState&); | 132 PassRefPtrWillBeRawPtr<ChannelSplitterNode> createChannelSplitter(ExceptionS tate&); |
130 PassRefPtr<ChannelSplitterNode> createChannelSplitter(size_t numberOfOutputs , ExceptionState&); | 133 PassRefPtrWillBeRawPtr<ChannelSplitterNode> createChannelSplitter(size_t num berOfOutputs, ExceptionState&); |
131 PassRefPtr<ChannelMergerNode> createChannelMerger(ExceptionState&); | 134 PassRefPtrWillBeRawPtr<ChannelMergerNode> createChannelMerger(ExceptionState &); |
132 PassRefPtr<ChannelMergerNode> createChannelMerger(size_t numberOfInputs, Exc eptionState&); | 135 PassRefPtrWillBeRawPtr<ChannelMergerNode> createChannelMerger(size_t numberO fInputs, ExceptionState&); |
133 PassRefPtr<OscillatorNode> createOscillator(); | 136 PassRefPtrWillBeRawPtr<OscillatorNode> createOscillator(); |
134 PassRefPtr<PeriodicWave> createPeriodicWave(Float32Array* real, Float32Array * imag, ExceptionState&); | 137 PassRefPtrWillBeRawPtr<PeriodicWave> createPeriodicWave(Float32Array* real, Float32Array* imag, ExceptionState&); |
135 | 138 |
136 // When a source node has no more processing to do (has finished playing), t hen it tells the context to dereference it. | 139 // When a source node has no more processing to do (has finished playing), t hen it tells the context to dereference it. |
137 void notifyNodeFinishedProcessing(AudioNode*); | 140 void notifyNodeFinishedProcessing(AudioNode*); |
138 | 141 |
139 // Called at the start of each render quantum. | 142 // Called at the start of each render quantum. |
140 void handlePreRenderTasks(); | 143 void handlePreRenderTasks(); |
141 | 144 |
142 // Called at the end of each render quantum. | 145 // Called at the end of each render quantum. |
143 void handlePostRenderTasks(); | 146 void handlePostRenderTasks(); |
144 | 147 |
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263 // In turn, these nodes reference all nodes they're connected to. All nodes are ultimately connected to the AudioDestinationNode. | 266 // In turn, these nodes reference all nodes they're connected to. All nodes are ultimately connected to the AudioDestinationNode. |
264 // When the context dereferences a source node, it will be deactivated from the rendering graph along with all other nodes it is | 267 // When the context dereferences a source node, it will be deactivated from the rendering graph along with all other nodes it is |
265 // uniquely connected to. See the AudioNode::ref() and AudioNode::deref() m ethods for more details. | 268 // uniquely connected to. See the AudioNode::ref() and AudioNode::deref() m ethods for more details. |
266 void refNode(AudioNode*); | 269 void refNode(AudioNode*); |
267 void derefNode(AudioNode*); | 270 void derefNode(AudioNode*); |
268 | 271 |
269 // When the context goes away, there might still be some sources which haven 't finished playing. | 272 // When the context goes away, there might still be some sources which haven 't finished playing. |
270 // Make sure to dereference them here. | 273 // Make sure to dereference them here. |
271 void derefUnfinishedSourceNodes(); | 274 void derefUnfinishedSourceNodes(); |
272 | 275 |
273 RefPtr<AudioDestinationNode> m_destinationNode; | 276 RefPtrWillBeRawPtr<AudioDestinationNode> m_destinationNode; |
Mads Ager (chromium)
2014/03/20 08:30:00
If this was a RefPtr before it needs to be a Membe
keishi
2014/03/27 07:39:37
Done.
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274 RefPtr<AudioListener> m_listener; | 277 RefPtrWillBeMember<AudioListener> m_listener; |
275 | 278 |
276 // Only accessed in the audio thread. | 279 // Only accessed in the audio thread. |
277 Vector<AudioNode*> m_finishedNodes; | 280 Vector<AudioNode*> m_finishedNodes; |
278 | 281 |
279 // We don't use RefPtr<AudioNode> here because AudioNode has a more complex ref() / deref() implementation | 282 // We don't use RefPtrWillBeRawPtr<AudioNode> here because AudioNode has a m ore complex ref() / deref() implementation |
Mads Ager (chromium)
2014/03/20 08:30:00
I would leave the comment as is.
keishi
2014/03/27 07:39:37
Done.
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280 // with an optional argument for refType. We need to use the special refTyp e: RefTypeConnection | 283 // with an optional argument for refType. We need to use the special refTyp e: RefTypeConnection |
281 // Either accessed when the graph lock is held, or on the main thread when t he audio thread has finished. | 284 // Either accessed when the graph lock is held, or on the main thread when t he audio thread has finished. |
282 Vector<AudioNode*> m_referencedNodes; | 285 Vector<AudioNode*> m_referencedNodes; |
283 | 286 |
284 // Accumulate nodes which need to be deleted here. | 287 // Accumulate nodes which need to be deleted here. |
285 // This is copied to m_nodesToDelete at the end of a render cycle in handleP ostRenderTasks(), where we're assured of a stable graph | 288 // This is copied to m_nodesToDelete at the end of a render cycle in handleP ostRenderTasks(), where we're assured of a stable graph |
286 // state which will have no references to any of the nodes in m_nodesToDelet e once the context lock is released | 289 // state which will have no references to any of the nodes in m_nodesToDelet e once the context lock is released |
287 // (when handlePostRenderTasks() has completed). | 290 // (when handlePostRenderTasks() has completed). |
288 Vector<AudioNode*> m_nodesMarkedForDeletion; | 291 Vector<AudioNode*> m_nodesMarkedForDeletion; |
289 | 292 |
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308 unsigned m_connectionCount; | 311 unsigned m_connectionCount; |
309 | 312 |
310 // Graph locking. | 313 // Graph locking. |
311 Mutex m_contextGraphMutex; | 314 Mutex m_contextGraphMutex; |
312 volatile ThreadIdentifier m_audioThread; | 315 volatile ThreadIdentifier m_audioThread; |
313 volatile ThreadIdentifier m_graphOwnerThread; // if the lock is held then th is is the thread which owns it, otherwise == UndefinedThreadIdentifier | 316 volatile ThreadIdentifier m_graphOwnerThread; // if the lock is held then th is is the thread which owns it, otherwise == UndefinedThreadIdentifier |
314 | 317 |
315 // Only accessed in the audio thread. | 318 // Only accessed in the audio thread. |
316 Vector<AudioNode*> m_deferredFinishDerefList; | 319 Vector<AudioNode*> m_deferredFinishDerefList; |
317 | 320 |
318 RefPtr<AudioBuffer> m_renderTarget; | 321 RefPtrWillBeMember<AudioBuffer> m_renderTarget; |
319 | 322 |
320 bool m_isOfflineContext; | 323 bool m_isOfflineContext; |
321 | 324 |
322 AsyncAudioDecoder m_audioDecoder; | 325 AsyncAudioDecoder m_audioDecoder; |
323 | 326 |
324 // This is considering 32 is large enough for multiple channels audio. | 327 // This is considering 32 is large enough for multiple channels audio. |
325 // It is somewhat arbitrary and could be increased if necessary. | 328 // It is somewhat arbitrary and could be increased if necessary. |
326 enum { MaxNumberOfChannels = 32 }; | 329 enum { MaxNumberOfChannels = 32 }; |
327 | 330 |
328 // Number of AudioBufferSourceNodes that are active (playing). | 331 // Number of AudioBufferSourceNodes that are active (playing). |
329 int m_activeSourceCount; | 332 int m_activeSourceCount; |
330 }; | 333 }; |
331 | 334 |
332 } // WebCore | 335 } // WebCore |
333 | 336 |
334 #endif // AudioContext_h | 337 #endif // AudioContext_h |
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