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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 |
(...skipping 18 matching lines...) Expand all Loading... | |
29 #include "modules/webaudio/AudioContext.h" | 29 #include "modules/webaudio/AudioContext.h" |
30 | 30 |
31 namespace blink { | 31 namespace blink { |
32 | 32 |
33 class ExceptionState; | 33 class ExceptionState; |
34 | 34 |
35 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { | 35 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { |
36 DEFINE_WRAPPERTYPEINFO(); | 36 DEFINE_WRAPPERTYPEINFO(); |
37 public: | 37 public: |
38 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); | 38 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); |
39 | |
40 virtual ~OfflineAudioContext(); | 39 virtual ~OfflineAudioContext(); |
41 | 40 |
41 virtual bool suspendIfNecessary(); | |
42 bool isSuspendScheduled() const; | |
43 | |
42 ScriptPromise startOfflineRendering(ScriptState*); | 44 ScriptPromise startOfflineRendering(ScriptState*); |
45 ScriptPromise suspendOfflineRendering(ScriptState*, double suspendTime); | |
46 ScriptPromise resumeOfflineRendering(ScriptState*); | |
47 | |
43 private: | 48 private: |
44 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); | 49 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); |
50 | |
51 // A container class for pairs of time information and suspend promise. | |
52 class ScheduledSuspendContainer : public NoBaseWillBeGarbageCollected<Schedu ledSuspendContainer> { | |
53 public: | |
54 static PassOwnPtr<ScheduledSuspendContainer> create(double, PassRefPtrWi llBeRawPtr<ScriptPromiseResolver>); | |
55 ~ScheduledSuspendContainer(); | |
56 PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver() { return m_reso lver; } | |
57 bool shouldBeSuspendedNow(double currentTime) const; | |
Raymond Toy
2015/05/19 22:04:45
Add comment on what this is supposed to do.
hongchan
2015/05/20 22:09:41
Done.
| |
58 | |
59 DECLARE_TRACE(); | |
60 | |
61 private: | |
62 ScheduledSuspendContainer(double, PassRefPtrWillBeRawPtr<ScriptPromiseRe solver>); | |
63 | |
64 double m_when; | |
65 RefPtrWillBeMember<ScriptPromiseResolver> m_resolver; | |
66 }; | |
67 | |
68 void suspendAndResolveOnMainThread(unsigned); | |
69 | |
70 // Unlike the design of real-time audio context, we keep suspend/resume | |
Raymond Toy
2015/05/19 22:04:45
This comment is wrong now since we're not using ju
| |
71 // promises in separate two vectors. This is because suspend() accompanies | |
72 // the timing information whereas resume() resolves when it is actually | |
73 // called. | |
74 WillBeHeapVector<OwnPtrWillBeMember<ScheduledSuspendContainer>> m_scheduledS uspends; | |
75 WillBeHeapVector<RefPtrWillBeMember<ScriptPromiseResolver>> m_resumeResolver s; | |
45 }; | 76 }; |
46 | 77 |
47 } // namespace blink | 78 } // namespace blink |
48 | 79 |
49 #endif // OfflineAudioContext_h | 80 #endif // OfflineAudioContext_h |
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