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Side by Side Diff: Source/modules/webaudio/ScriptProcessorNode.h

Issue 635233004: Replace FINAL and OVERRIDE with their C++11 counterparts in Source/modules (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 6 years, 2 months ago
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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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37 class AudioBuffer; 37 class AudioBuffer;
38 class AudioContext; 38 class AudioContext;
39 class AudioProcessingEvent; 39 class AudioProcessingEvent;
40 40
41 // ScriptProcessorNode is an AudioNode which allows for arbitrary synthesis or p rocessing directly using JavaScript. 41 // ScriptProcessorNode is an AudioNode which allows for arbitrary synthesis or p rocessing directly using JavaScript.
42 // The API allows for a variable number of inputs and outputs, although it must have at least one input or output. 42 // The API allows for a variable number of inputs and outputs, although it must have at least one input or output.
43 // This basic implementation supports no more than one input and output. 43 // This basic implementation supports no more than one input and output.
44 // The "onaudioprocess" attribute is an event listener which will get called per iodically with an AudioProcessingEvent which has 44 // The "onaudioprocess" attribute is an event listener which will get called per iodically with an AudioProcessingEvent which has
45 // AudioBuffers for each input and output. 45 // AudioBuffers for each input and output.
46 46
47 class ScriptProcessorNode FINAL : public AudioNode { 47 class ScriptProcessorNode final : public AudioNode {
48 DEFINE_WRAPPERTYPEINFO(); 48 DEFINE_WRAPPERTYPEINFO();
49 public: 49 public:
50 // bufferSize must be one of the following values: 256, 512, 1024, 2048, 409 6, 8192, 16384. 50 // bufferSize must be one of the following values: 256, 512, 1024, 2048, 409 6, 8192, 16384.
51 // This value controls how frequently the onaudioprocess event handler is ca lled and how many sample-frames need to be processed each call. 51 // This value controls how frequently the onaudioprocess event handler is ca lled and how many sample-frames need to be processed each call.
52 // Lower numbers for bufferSize will result in a lower (better) latency. Hig her numbers will be necessary to avoid audio breakup and glitches. 52 // Lower numbers for bufferSize will result in a lower (better) latency. Hig her numbers will be necessary to avoid audio breakup and glitches.
53 // The value chosen must carefully balance between latency and audio quality . 53 // The value chosen must carefully balance between latency and audio quality .
54 static ScriptProcessorNode* create(AudioContext*, float sampleRate, size_t b ufferSize, unsigned numberOfInputChannels, unsigned numberOfOutputChannels); 54 static ScriptProcessorNode* create(AudioContext*, float sampleRate, size_t b ufferSize, unsigned numberOfInputChannels, unsigned numberOfOutputChannels);
55 55
56 virtual ~ScriptProcessorNode(); 56 virtual ~ScriptProcessorNode();
57 57
58 // AudioNode 58 // AudioNode
59 virtual void dispose() OVERRIDE; 59 virtual void dispose() override;
60 virtual void process(size_t framesToProcess) OVERRIDE; 60 virtual void process(size_t framesToProcess) override;
61 virtual void initialize() OVERRIDE; 61 virtual void initialize() override;
62 virtual void uninitialize() OVERRIDE; 62 virtual void uninitialize() override;
63 63
64 size_t bufferSize() const { return m_bufferSize; } 64 size_t bufferSize() const { return m_bufferSize; }
65 65
66 virtual void setChannelCount(unsigned long, ExceptionState&) OVERRIDE; 66 virtual void setChannelCount(unsigned long, ExceptionState&) override;
67 virtual void setChannelCountMode(const String&, ExceptionState&) OVERRIDE; 67 virtual void setChannelCountMode(const String&, ExceptionState&) override;
68 68
69 DEFINE_ATTRIBUTE_EVENT_LISTENER(audioprocess); 69 DEFINE_ATTRIBUTE_EVENT_LISTENER(audioprocess);
70 70
71 void trace(Visitor*); 71 void trace(Visitor*);
72 72
73 private: 73 private:
74 virtual double tailTime() const OVERRIDE; 74 virtual double tailTime() const override;
75 virtual double latencyTime() const OVERRIDE; 75 virtual double latencyTime() const override;
76 76
77 ScriptProcessorNode(AudioContext*, float sampleRate, size_t bufferSize, unsi gned numberOfInputChannels, unsigned numberOfOutputChannels); 77 ScriptProcessorNode(AudioContext*, float sampleRate, size_t bufferSize, unsi gned numberOfInputChannels, unsigned numberOfOutputChannels);
78 78
79 void fireProcessEvent(); 79 void fireProcessEvent();
80 80
81 // Double buffering 81 // Double buffering
82 unsigned doubleBufferIndex() const { return m_doubleBufferIndex; } 82 unsigned doubleBufferIndex() const { return m_doubleBufferIndex; }
83 void swapBuffers() { m_doubleBufferIndex = 1 - m_doubleBufferIndex; } 83 void swapBuffers() { m_doubleBufferIndex = 1 - m_doubleBufferIndex; }
84 unsigned m_doubleBufferIndex; 84 unsigned m_doubleBufferIndex;
85 unsigned m_doubleBufferIndexForEvent; 85 unsigned m_doubleBufferIndexForEvent;
86 HeapVector<Member<AudioBuffer> > m_inputBuffers; 86 HeapVector<Member<AudioBuffer> > m_inputBuffers;
87 HeapVector<Member<AudioBuffer> > m_outputBuffers; 87 HeapVector<Member<AudioBuffer> > m_outputBuffers;
88 88
89 size_t m_bufferSize; 89 size_t m_bufferSize;
90 unsigned m_bufferReadWriteIndex; 90 unsigned m_bufferReadWriteIndex;
91 91
92 unsigned m_numberOfInputChannels; 92 unsigned m_numberOfInputChannels;
93 unsigned m_numberOfOutputChannels; 93 unsigned m_numberOfOutputChannels;
94 94
95 RefPtr<AudioBus> m_internalInputBus; 95 RefPtr<AudioBus> m_internalInputBus;
96 // Synchronize process() with fireProcessEvent(). 96 // Synchronize process() with fireProcessEvent().
97 mutable Mutex m_processEventLock; 97 mutable Mutex m_processEventLock;
98 }; 98 };
99 99
100 } // namespace blink 100 } // namespace blink
101 101
102 #endif // ScriptProcessorNode_h 102 #endif // ScriptProcessorNode_h
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