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Side by Side Diff: third_party/WebKit/Source/modules/webaudio/AudioContext.h

Issue 2501863003: Support for AudioContextOptions latencyHint. (Closed)
Patch Set: Fixes to WebAudioDeviceImpl unit test. Created 3 years, 10 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef AudioContext_h 5 #ifndef AudioContext_h
6 #define AudioContext_h 6 #define AudioContext_h
7 7
8 #include "bindings/core/v8/ScriptPromise.h" 8 #include "bindings/core/v8/ScriptPromise.h"
9 #include "bindings/core/v8/ScriptPromiseResolver.h" 9 #include "bindings/core/v8/ScriptPromiseResolver.h"
10 #include "modules/webaudio/AudioContextOptions.h"
10 #include "modules/webaudio/BaseAudioContext.h" 11 #include "modules/webaudio/BaseAudioContext.h"
11 #include "platform/heap/Handle.h" 12 #include "platform/heap/Handle.h"
12 13
13 namespace blink { 14 namespace blink {
14 15
16 class AudioContextOptions;
15 class AudioTimestamp; 17 class AudioTimestamp;
16 class Document; 18 class Document;
17 class ExceptionState; 19 class ExceptionState;
18 class ScriptState; 20 class ScriptState;
21 class WebAudioLatencyHint;
19 22
20 // This is an BaseAudioContext which actually plays sound, unlike an 23 // This is an BaseAudioContext which actually plays sound, unlike an
21 // OfflineAudioContext which renders sound into a buffer. 24 // OfflineAudioContext which renders sound into a buffer.
22 class AudioContext : public BaseAudioContext { 25 class MODULES_EXPORT AudioContext : public BaseAudioContext {
23 DEFINE_WRAPPERTYPEINFO(); 26 DEFINE_WRAPPERTYPEINFO();
24 27
25 public: 28 public:
26 static AudioContext* create(Document&, ExceptionState&); 29 static AudioContext* create(Document&,
30 const AudioContextOptions&,
31 ExceptionState&);
27 32
28 ~AudioContext() override; 33 ~AudioContext() override;
29 DECLARE_VIRTUAL_TRACE(); 34 DECLARE_VIRTUAL_TRACE();
30 35
31 ScriptPromise closeContext(ScriptState*); 36 ScriptPromise closeContext(ScriptState*);
32 bool isContextClosed() const final; 37 bool isContextClosed() const final;
33 38
34 ScriptPromise suspendContext(ScriptState*) final; 39 ScriptPromise suspendContext(ScriptState*) final;
35 ScriptPromise resumeContext(ScriptState*) final; 40 ScriptPromise resumeContext(ScriptState*) final;
36 41
37 bool hasRealtimeConstraint() final { return true; } 42 bool hasRealtimeConstraint() final { return true; }
38 43
39 void getOutputTimestamp(ScriptState*, AudioTimestamp&); 44 void getOutputTimestamp(ScriptState*, AudioTimestamp&);
45 double baseLatency() const;
40 46
41 protected: 47 protected:
42 AudioContext(Document&); 48 AudioContext(Document&, const WebAudioLatencyHint&);
43 49
44 void didClose() final; 50 void didClose() final;
45 51
46 private: 52 private:
47 void stopRendering(); 53 void stopRendering();
48 54
49 unsigned m_contextId; 55 unsigned m_contextId;
50 Member<ScriptPromiseResolver> m_closeResolver; 56 Member<ScriptPromiseResolver> m_closeResolver;
51 }; 57 };
52 58
53 } // namespace blink 59 } // namespace blink
54 60
55 #endif // AudioContext_h 61 #endif // AudioContext_h
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