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

Issue 205173002: Move webaudio to oilpan (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Fixed Created 6 years, 8 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 * 7 *
8 * 1. Redistributions of source code must retain the above copyright 8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer. 9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright 10 * 2. Redistributions in binary form must reproduce the above copyright
(...skipping 23 matching lines...) Expand all
34 #include "wtf/PassRefPtr.h" 34 #include "wtf/PassRefPtr.h"
35 #include "wtf/RefCounted.h" 35 #include "wtf/RefCounted.h"
36 #include "wtf/RefPtr.h" 36 #include "wtf/RefPtr.h"
37 #include "wtf/Vector.h" 37 #include "wtf/Vector.h"
38 38
39 namespace WebCore { 39 namespace WebCore {
40 40
41 class AudioBus; 41 class AudioBus;
42 class ExceptionState; 42 class ExceptionState;
43 43
44 class AudioBuffer : public ScriptWrappable, public RefCounted<AudioBuffer> { 44 class AudioBuffer : public RefCountedWillBeGarbageCollectedFinalized<AudioBuffer >, public ScriptWrappable {
45 public: 45 public:
46 static PassRefPtr<AudioBuffer> create(unsigned numberOfChannels, size_t numb erOfFrames, float sampleRate); 46 static PassRefPtrWillBeRawPtr<AudioBuffer> create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
47 47
48 // Returns 0 if data is not a valid audio file. 48 // Returns 0 if data is not a valid audio file.
49 static PassRefPtr<AudioBuffer> createFromAudioFileData(const void* data, siz e_t dataSize, bool mixToMono, float sampleRate); 49 static PassRefPtrWillBeRawPtr<AudioBuffer> createFromAudioFileData(const voi d* data, size_t dataSize, bool mixToMono, float sampleRate);
50
51 static PassRefPtrWillBeRawPtr<AudioBuffer> createFromAudioBus(AudioBus*);
50 52
51 // Format 53 // Format
52 size_t length() const { return m_length; } 54 size_t length() const { return m_length; }
53 double duration() const { return length() / static_cast<double>(sampleRate() ); } 55 double duration() const { return length() / static_cast<double>(sampleRate() ); }
54 float sampleRate() const { return m_sampleRate; } 56 float sampleRate() const { return m_sampleRate; }
55 57
56 // Channel data access 58 // Channel data access
57 unsigned numberOfChannels() const { return m_channels.size(); } 59 unsigned numberOfChannels() const { return m_channels.size(); }
58 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat e&); 60 PassRefPtr<Float32Array> getChannelData(unsigned channelIndex, ExceptionStat e&);
59 Float32Array* getChannelData(unsigned channelIndex); 61 Float32Array* getChannelData(unsigned channelIndex);
60 void zero(); 62 void zero();
61 63
62 // Scalar gain 64 // Scalar gain
63 double gain() const { return m_gain; } 65 double gain() const { return m_gain; }
64 void setGain(double gain) { m_gain = gain; } 66 void setGain(double gain) { m_gain = gain; }
65 67
66 static float minAllowedSampleRate(); 68 static float minAllowedSampleRate();
67 static float maxAllowedSampleRate(); 69 static float maxAllowedSampleRate();
70
71 void trace(Visitor*) { }
72
68 protected: 73 protected:
69 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa te); 74 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRa te);
70 explicit AudioBuffer(AudioBus*); 75 explicit AudioBuffer(AudioBus*);
71 bool createdSuccessfully(unsigned desiredNumberOfChannels) const; 76 bool createdSuccessfully(unsigned desiredNumberOfChannels) const;
72 77
73 double m_gain; // scalar gain 78 double m_gain; // scalar gain
74 float m_sampleRate; 79 float m_sampleRate;
75 size_t m_length; 80 size_t m_length;
76 81
77 Vector<RefPtr<Float32Array> > m_channels; 82 Vector<RefPtr<Float32Array> > m_channels;
78 }; 83 };
79 84
80 } // namespace WebCore 85 } // namespace WebCore
81 86
82 #endif // AudioBuffer_h 87 #endif // AudioBuffer_h
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