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5 * modification, are permitted provided that the following conditions
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32 #include "bindings/core/v8/ScriptWrappable.h"
33 #include "core/dom/DOMTypedArray.h"
34 #include "wtf/Float32Array.h"
35 #include "wtf/PassRefPtr.h"
36 #include "wtf/RefPtr.h"
37 #include "wtf/Vector.h"
44 class AudioBuffer : public GarbageCollectedFinalized<AudioBuffer>, public ScriptWrappable {
45 DEFINE_WRAPPERTYPEINFO();
47 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
48 static AudioBuffer* create(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState&);
50 // Returns 0 if data is not a valid audio file.
51 static AudioBuffer* createFromAudioFileData(const void* data, size_t dataSize, bool mixToMono, float sampleRate);
53 static AudioBuffer* createFromAudioBus(AudioBus*);
56 size_t length() const { return m_length; }
57 double duration() const { return length() / static_cast<double>(sampleRate()); }
58 float sampleRate() const { return m_sampleRate; }
60 // Channel data access
61 unsigned numberOfChannels() const { return m_channels.size(); }
62 PassRefPtr<DOMFloat32Array> getChannelData(unsigned channelIndex, ExceptionState&);
63 Float32Array* getChannelData(unsigned channelIndex);
66 void trace(Visitor*) { }
68 virtual v8::Handle<v8::Object> associateWithWrapper(const WrapperTypeInfo*, v8::Handle<v8::Object> wrapper, v8::Isolate*) override;
71 AudioBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate);
72 explicit AudioBuffer(AudioBus*);
73 bool createdSuccessfully(unsigned desiredNumberOfChannels) const;
78 Vector<RefPtr<Float32Array> > m_channels;
83 #endif // AudioBuffer_h