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

Issue 205173002: Move webaudio to oilpan (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: WIP Created 6 years, 9 months ago
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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
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45 // The waveform type. 45 // The waveform type.
46 // These must be defined as in the .idl file. 46 // These must be defined as in the .idl file.
47 enum { 47 enum {
48 SINE = 0, 48 SINE = 0,
49 SQUARE = 1, 49 SQUARE = 1,
50 SAWTOOTH = 2, 50 SAWTOOTH = 2,
51 TRIANGLE = 3, 51 TRIANGLE = 3,
52 CUSTOM = 4 52 CUSTOM = 4
53 }; 53 };
54 54
55 static PassRefPtr<OscillatorNode> create(AudioContext*, float sampleRate); 55 static PassRefPtrWillBeRawPtr<OscillatorNode> create(AudioContext*, float sa mpleRate);
56 56
57 virtual ~OscillatorNode(); 57 virtual ~OscillatorNode();
58 58
59 // AudioNode 59 // AudioNode
60 virtual void process(size_t framesToProcess) OVERRIDE; 60 virtual void process(size_t framesToProcess) OVERRIDE;
61 61
62 String type() const; 62 String type() const;
63 63
64 bool setType(unsigned); // Returns true on success. 64 bool setType(unsigned); // Returns true on success.
65 void setType(const String&); 65 void setType(const String&);
66 66
67 AudioParam* frequency() { return m_frequency.get(); } 67 AudioParam* frequency() { return m_frequency.get(); }
68 AudioParam* detune() { return m_detune.get(); } 68 AudioParam* detune() { return m_detune.get(); }
69 69
70 void setPeriodicWave(PeriodicWave*); 70 void setPeriodicWave(PeriodicWave*);
71 71
72 virtual void trace(Visitor*) OVERRIDE;
73
72 private: 74 private:
73 OscillatorNode(AudioContext*, float sampleRate); 75 OscillatorNode(AudioContext*, float sampleRate);
74 76
75 // Returns true if there are sample-accurate timeline parameter changes. 77 // Returns true if there are sample-accurate timeline parameter changes.
76 bool calculateSampleAccuratePhaseIncrements(size_t framesToProcess); 78 bool calculateSampleAccuratePhaseIncrements(size_t framesToProcess);
77 79
78 virtual bool propagatesSilence() const OVERRIDE; 80 virtual bool propagatesSilence() const OVERRIDE;
79 81
80 // One of the waveform types defined in the enum. 82 // One of the waveform types defined in the enum.
81 unsigned short m_type; 83 unsigned short m_type;
82 84
83 // Frequency value in Hertz. 85 // Frequency value in Hertz.
84 RefPtr<AudioParam> m_frequency; 86 RefPtrWillBeMember<AudioParam> m_frequency;
85 87
86 // Detune value (deviating from the frequency) in Cents. 88 // Detune value (deviating from the frequency) in Cents.
87 RefPtr<AudioParam> m_detune; 89 RefPtrWillBeMember<AudioParam> m_detune;
88 90
89 bool m_firstRender; 91 bool m_firstRender;
90 92
91 // m_virtualReadIndex is a sample-frame index into our buffer representing t he current playback position. 93 // m_virtualReadIndex is a sample-frame index into our buffer representing t he current playback position.
92 // Since it's floating-point, it has sub-sample accuracy. 94 // Since it's floating-point, it has sub-sample accuracy.
93 double m_virtualReadIndex; 95 double m_virtualReadIndex;
94 96
95 // This synchronizes process(). 97 // This synchronizes process().
96 mutable Mutex m_processLock; 98 mutable Mutex m_processLock;
97 99
98 // Stores sample-accurate values calculated according to frequency and detun e. 100 // Stores sample-accurate values calculated according to frequency and detun e.
99 AudioFloatArray m_phaseIncrements; 101 AudioFloatArray m_phaseIncrements;
100 AudioFloatArray m_detuneValues; 102 AudioFloatArray m_detuneValues;
101 103
102 RefPtr<PeriodicWave> m_periodicWave; 104 RefPtrWillBeMember<PeriodicWave> m_periodicWave;
103 }; 105 };
104 106
105 } // namespace WebCore 107 } // namespace WebCore
106 108
107 #endif // OscillatorNode_h 109 #endif // OscillatorNode_h
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