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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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| 23 * DAMAGE. | 23 * DAMAGE. |
| 24 */ | 24 */ |
| 25 | 25 |
| 26 #ifndef BaseAudioContext_h | 26 #ifndef BaseAudioContext_h |
| 27 #define BaseAudioContext_h | 27 #define BaseAudioContext_h |
| 28 | 28 |
| 29 #include "bindings/core/v8/ActiveScriptWrappable.h" | 29 #include "bindings/core/v8/ActiveScriptWrappable.h" |
| 30 #include "bindings/core/v8/ScriptPromise.h" | 30 #include "bindings/core/v8/ScriptPromise.h" |
| 31 #include "bindings/core/v8/ScriptPromiseResolver.h" | 31 #include "bindings/core/v8/ScriptPromiseResolver.h" |
| 32 #include "core/dom/ActiveDOMObject.h" | |
| 33 #include "core/dom/DOMTypedArray.h" | 32 #include "core/dom/DOMTypedArray.h" |
| 33 #include "core/dom/SuspendableObject.h" |
| 34 #include "core/events/EventListener.h" | 34 #include "core/events/EventListener.h" |
| 35 #include "modules/EventTargetModules.h" | 35 #include "modules/EventTargetModules.h" |
| 36 #include "modules/ModulesExport.h" | 36 #include "modules/ModulesExport.h" |
| 37 #include "modules/webaudio/AsyncAudioDecoder.h" | 37 #include "modules/webaudio/AsyncAudioDecoder.h" |
| 38 #include "modules/webaudio/AudioDestinationNode.h" | 38 #include "modules/webaudio/AudioDestinationNode.h" |
| 39 #include "modules/webaudio/DeferredTaskHandler.h" | 39 #include "modules/webaudio/DeferredTaskHandler.h" |
| 40 #include "modules/webaudio/IIRFilterNode.h" | 40 #include "modules/webaudio/IIRFilterNode.h" |
| 41 #include "platform/audio/AudioBus.h" | 41 #include "platform/audio/AudioBus.h" |
| 42 #include "platform/heap/Handle.h" | 42 #include "platform/heap/Handle.h" |
| 43 #include "wtf/HashSet.h" | 43 #include "wtf/HashSet.h" |
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| 80 class SecurityOrigin; | 80 class SecurityOrigin; |
| 81 class StereoPannerNode; | 81 class StereoPannerNode; |
| 82 class WaveShaperNode; | 82 class WaveShaperNode; |
| 83 | 83 |
| 84 // BaseAudioContext is the cornerstone of the web audio API and all AudioNodes | 84 // BaseAudioContext is the cornerstone of the web audio API and all AudioNodes |
| 85 // are created from it. For thread safety between the audio thread and the main | 85 // are created from it. For thread safety between the audio thread and the main |
| 86 // thread, it has a rendering graph locking mechanism. | 86 // thread, it has a rendering graph locking mechanism. |
| 87 | 87 |
| 88 class MODULES_EXPORT BaseAudioContext : public EventTargetWithInlineData, | 88 class MODULES_EXPORT BaseAudioContext : public EventTargetWithInlineData, |
| 89 public ActiveScriptWrappable, | 89 public ActiveScriptWrappable, |
| 90 public ActiveDOMObject { | 90 public SuspendableObject { |
| 91 USING_GARBAGE_COLLECTED_MIXIN(BaseAudioContext); | 91 USING_GARBAGE_COLLECTED_MIXIN(BaseAudioContext); |
| 92 DEFINE_WRAPPERTYPEINFO(); | 92 DEFINE_WRAPPERTYPEINFO(); |
| 93 | 93 |
| 94 public: | 94 public: |
| 95 // The state of an audio context. On creation, the state is Suspended. The | 95 // The state of an audio context. On creation, the state is Suspended. The |
| 96 // state is Running if audio is being processed (audio graph is being pulled | 96 // state is Running if audio is being processed (audio graph is being pulled |
| 97 // for data). The state is Closed if the audio context has been closed. The | 97 // for data). The state is Closed if the audio context has been closed. The |
| 98 // valid transitions are from Suspended to either Running or Closed; Running | 98 // valid transitions are from Suspended to either Running or Closed; Running |
| 99 // to Suspended or Closed. Once Closed, there are no valid transitions. | 99 // to Suspended or Closed. Once Closed, there are no valid transitions. |
| 100 enum AudioContextState { Suspended, Running, Closed }; | 100 enum AudioContextState { Suspended, Running, Closed }; |
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| 447 // This is considering 32 is large enough for multiple channels audio. | 447 // This is considering 32 is large enough for multiple channels audio. |
| 448 // It is somewhat arbitrary and could be increased if necessary. | 448 // It is somewhat arbitrary and could be increased if necessary. |
| 449 enum { MaxNumberOfChannels = 32 }; | 449 enum { MaxNumberOfChannels = 32 }; |
| 450 | 450 |
| 451 Optional<AutoplayStatus> m_autoplayStatus; | 451 Optional<AutoplayStatus> m_autoplayStatus; |
| 452 }; | 452 }; |
| 453 | 453 |
| 454 } // namespace blink | 454 } // namespace blink |
| 455 | 455 |
| 456 #endif // BaseAudioContext_h | 456 #endif // BaseAudioContext_h |
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