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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 13 matching lines...) Expand all Loading... | |
24 | 24 |
25 #ifndef OfflineAudioContext_h | 25 #ifndef OfflineAudioContext_h |
26 #define OfflineAudioContext_h | 26 #define OfflineAudioContext_h |
27 | 27 |
28 #include "modules/ModulesExport.h" | 28 #include "modules/ModulesExport.h" |
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 class ScheduledSuspendContainer; | |
34 | 35 |
35 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { | 36 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { |
36 DEFINE_WRAPPERTYPEINFO(); | 37 DEFINE_WRAPPERTYPEINFO(); |
37 public: | 38 public: |
38 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); | 39 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); |
39 | 40 |
40 virtual ~OfflineAudioContext(); | 41 virtual ~OfflineAudioContext(); |
41 | 42 |
43 DECLARE_TRACE(); | |
44 | |
45 // Check all the scheduled suspends if the context should suspend at | |
46 // currentTime(). Then post tasks to resolve promises on the main thread | |
47 // if necessary. | |
48 bool shouldSuspendNow(); | |
yhirano
2015/06/18 13:40:52
+override
ditto for below
hongchan
2015/06/18 18:22:31
Done.
| |
49 | |
50 // Clear suspensions marked as 'resolved' in the list. | |
51 void resolvePendingSuspendPromises(); | |
52 | |
53 // Fire completion event when the rendering is finished. | |
54 void fireCompletionEvent(); | |
55 | |
56 DEFINE_ATTRIBUTE_EVENT_LISTENER(complete); | |
57 | |
42 ScriptPromise startOfflineRendering(ScriptState*); | 58 ScriptPromise startOfflineRendering(ScriptState*); |
59 ScriptPromise suspendOfflineRendering(ScriptState*, double); | |
60 ScriptPromise resumeOfflineRendering(ScriptState*); | |
61 | |
43 private: | 62 private: |
44 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); | 63 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); |
64 | |
65 // Resolve pending suspend promises and removes them from the list. | |
66 void resolvePendingSuspendPromisesOnMainThread(); | |
67 | |
68 HeapVector<Member<ScheduledSuspendContainer>> m_scheduledSuspends; | |
69 RefPtrWillBeMember<ScriptPromiseResolver> m_completeResolver; | |
70 | |
71 // This flag is necessary to indicate the rendering has actually started. | |
72 // Note that initial state of context is 'Suspended', which is the same | |
73 // state when the context is suspended. | |
74 bool m_isRenderingStarted; | |
75 | |
76 // Total render sample length. | |
77 size_t m_totalRenderFrames; | |
78 }; | |
79 | |
80 // A container class for a pair of time information and the suspend promise | |
81 // resolver. | |
82 class ScheduledSuspendContainer : public GarbageCollectedFinalized<ScheduledSusp endContainer> { | |
83 public: | |
84 static ScheduledSuspendContainer* create(size_t suspendFrame, PassRefPtrWill BeRawPtr<ScriptPromiseResolver>); | |
85 ~ScheduledSuspendContainer(); | |
86 | |
87 DECLARE_TRACE(); | |
88 | |
89 PassRefPtrWillBeRawPtr<ScriptPromiseResolver> resolver() { return m_resolver ; } | |
90 | |
91 // Query if the rendering should be suspended at |whenFrame|. | |
92 bool shouldSuspendAt(size_t whenFrame) const; | |
93 | |
94 // Query if the suspend is pending for the promise resolution. | |
95 bool isPending() const; | |
96 | |
97 // Mark the suspend as pending. Containers with 'pending' flag will | |
98 // be collectively resolved when the actual suspension happens. | |
99 void markAsPending(); | |
100 | |
101 private: | |
102 ScheduledSuspendContainer(size_t suspendFrame, PassRefPtrWillBeRawPtr<Script PromiseResolver>); | |
103 | |
104 // Suspend time in samples. | |
105 size_t m_suspendFrame; | |
106 | |
107 // Associated promise resolver. | |
108 RefPtrWillBeMember<ScriptPromiseResolver> m_resolver; | |
109 | |
110 // A pending marker for the safe batch removal. | |
111 bool m_isPending; | |
45 }; | 112 }; |
46 | 113 |
47 } // namespace blink | 114 } // namespace blink |
48 | 115 |
49 #endif // OfflineAudioContext_h | 116 #endif // OfflineAudioContext_h |
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