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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 |
11 * documentation and/or other materials provided with the distribution. | 11 * documentation and/or other materials provided with the distribution. |
12 * | 12 * |
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN Y | 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN Y |
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y | 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y |
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N | 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N |
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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 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 #include "wtf/HashMap.h" | |
30 | 31 |
31 namespace blink { | 32 namespace blink { |
32 | 33 |
33 class ExceptionState; | 34 class ExceptionState; |
35 class ScheduledSuspendContainer; | |
36 | |
37 // The HashMap with 'zero' key is needed because |currentSampleFrame| can be zer o. | |
38 using SuspendContainerMap = HashMap<size_t, RefPtr<ScheduledSuspendContainer>, D efaultHash<size_t>::Hash, WTF::UnsignedWithZeroKeyHashTraits<size_t>>; | |
haraken
2015/07/08 04:05:41
Actually this ScheduledSuspendContainer doesn't ne
hongchan
2015/07/08 17:47:32
Done. However, I am having a cross-thread issue in
| |
34 | 39 |
35 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { | 40 class MODULES_EXPORT OfflineAudioContext final : public AudioContext { |
36 DEFINE_WRAPPERTYPEINFO(); | 41 DEFINE_WRAPPERTYPEINFO(); |
37 public: | 42 public: |
38 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); | 43 static OfflineAudioContext* create(ExecutionContext*, unsigned numberOfChann els, size_t numberOfFrames, float sampleRate, ExceptionState&); |
39 | 44 |
40 virtual ~OfflineAudioContext(); | 45 virtual ~OfflineAudioContext(); |
41 | 46 |
47 DECLARE_VIRTUAL_TRACE(); | |
48 | |
49 // Fire completion event when the rendering is finished. | |
50 void fireCompletionEvent() override; | |
51 | |
52 // Check all the scheduled suspends if the context should suspend at | |
53 // currentTime(). Then post tasks to resolve promises on the main thread | |
54 // if necessary. | |
55 bool shouldSuspendNow() override; | |
56 | |
57 // Clear suspensions marked as 'resolved' in the list. | |
58 void resolvePendingSuspendPromises() override; | |
59 | |
60 DEFINE_ATTRIBUTE_EVENT_LISTENER(complete); | |
61 | |
42 ScriptPromise startOfflineRendering(ScriptState*); | 62 ScriptPromise startOfflineRendering(ScriptState*); |
63 ScriptPromise suspendOfflineRendering(ScriptState*, double); | |
64 ScriptPromise resumeOfflineRendering(ScriptState*); | |
65 | |
43 private: | 66 private: |
44 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); | 67 OfflineAudioContext(Document*, unsigned numberOfChannels, size_t numberOfFra mes, float sampleRate); |
68 | |
69 // Check a suspend container if it has a duplicate scheduled frame or | |
70 // is behind the current frame. If the validation fails, post a task to the | |
71 // main thread to reject the promise. | |
72 void validateSuspendContainerOnRenderThread(PassRefPtr<ScheduledSuspendConta iner>); | |
73 | |
74 // Reject a suspend container on the main thread when the validation fails. | |
75 void rejectSuspendContainerOnMainThread(PassRefPtr<ScheduledSuspendContainer >); | |
76 | |
77 // Resolve a pending suspend container and removes it from the map. | |
78 void resolveSuspendContainerOnMainThread(PassRefPtr<ScheduledSuspendContaine r>); | |
79 | |
80 SuspendContainerMap m_scheduledSuspends; | |
81 RefPtrWillBeMember<ScriptPromiseResolver> m_completeResolver; | |
82 | |
83 // This flag is necessary to indicate the rendering has actually started. | |
84 // Note that initial state of context is 'Suspended', which is the same | |
85 // state when the context is suspended. | |
86 bool m_isRenderingStarted; | |
haraken
2015/07/08 04:05:41
I'm not sure but would it be better to introduce a
hongchan
2015/07/08 17:47:32
rtoy@ and I thought about having a 'created' state
| |
87 | |
88 // Total render sample length. | |
89 size_t m_totalRenderFrames; | |
90 }; | |
91 | |
92 // A container class for a pair of time information and the suspend promise | |
93 // resolver. | |
94 // | |
95 // TODO(hongchan): This class is |ThreadSafeRefCounted| because it needs to be | |
96 // accessed by the offline render thread which is not oilpan-enabled. This is a | |
97 // short-term solution until the offline render thread gets oilpan coverage. | |
98 class ScheduledSuspendContainer : public ThreadSafeRefCounted<ScheduledSuspendCo ntainer> { | |
haraken
2015/07/08 04:05:42
As commented above, the render thread can keep Sch
hongchan
2015/07/08 17:47:32
Unfortunately, |resolvePendingSuspendPromises()| c
| |
99 public: | |
100 static PassRefPtr<ScheduledSuspendContainer> create(double suspendTime, size _t suspendFrame, PassRefPtrWillBeRawPtr<ScriptPromiseResolver>); | |
101 ~ScheduledSuspendContainer(); | |
102 | |
103 double suspendTime() const { return m_suspendTime; } | |
104 size_t suspendFrame() const { return m_suspendFrame; } | |
105 | |
106 // Query if the rendering should be suspended at |whenFrame|. | |
107 bool shouldSuspendAtFrame(size_t whenFrame) const; | |
108 | |
109 // Set the error message for the reason of rejection on the render thread | |
110 // before sending it to the main thread. | |
111 void setErrorMessageForRejection(ExceptionCode, const String&); | |
112 | |
113 // {Resolve, Reject} the promise resolver on the main thread. | |
114 void resolvePromise(); | |
115 void rejectPromise(); | |
116 | |
117 private: | |
118 ScheduledSuspendContainer(double suspendTime, size_t suspendFrame, PassRefPt rWillBeRawPtr<ScriptPromiseResolver>); | |
119 | |
120 // Actual suspend time before the quantization by render quantum frame. | |
121 double m_suspendTime; | |
122 | |
123 // Suspend sample frame. This is quantized by the render quantum size. | |
124 size_t m_suspendFrame; | |
125 | |
126 // Associated promise resolver. | |
127 RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver; | |
128 | |
129 ExceptionCode m_errorCode; | |
130 String m_errorMessage; | |
45 }; | 131 }; |
46 | 132 |
47 } // namespace blink | 133 } // namespace blink |
48 | 134 |
49 #endif // OfflineAudioContext_h | 135 #endif // OfflineAudioContext_h |
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