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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 "modules/ModulesExport.h"
35 #include "wtf/PassRefPtr.h"
36 #include "wtf/RefPtr.h"
37 #include "wtf/Vector.h"
38 #include "wtf/build_config.h"
43 class AudioBufferOptions;
44 class BaseAudioContext;
47 class MODULES_EXPORT AudioBuffer final : public GarbageCollected<AudioBuffer>,
48 public ScriptWrappable {
49 DEFINE_WRAPPERTYPEINFO();
52 static AudioBuffer* create(unsigned numberOfChannels,
53 size_t numberOfFrames,
55 static AudioBuffer* create(unsigned numberOfChannels,
56 size_t numberOfFrames,
59 static AudioBuffer* create(BaseAudioContext*,
60 const AudioBufferOptions&,
63 // Returns 0 if data is not a valid audio file.
64 static AudioBuffer* createFromAudioFileData(const void* data,
69 static AudioBuffer* createFromAudioBus(AudioBus*);
72 size_t length() const { return m_length; }
73 double duration() const {
74 return length() / static_cast<double>(sampleRate());
76 float sampleRate() const { return m_sampleRate; }
78 // Channel data access
79 unsigned numberOfChannels() const { return m_channels.size(); }
80 DOMFloat32Array* getChannelData(unsigned channelIndex, ExceptionState&);
81 DOMFloat32Array* getChannelData(unsigned channelIndex);
82 void copyFromChannel(DOMFloat32Array*, long channelNumber, ExceptionState&);
83 void copyFromChannel(DOMFloat32Array*,
85 unsigned long startInChannel,
87 void copyToChannel(DOMFloat32Array*, long channelNumber, ExceptionState&);
88 void copyToChannel(DOMFloat32Array*,
90 unsigned long startInChannel,
95 DEFINE_INLINE_TRACE() { visitor->trace(m_channels); }
98 explicit AudioBuffer(AudioBus*);
100 static DOMFloat32Array* createFloat32ArrayOrNull(size_t length);
102 AudioBuffer(unsigned numberOfChannels,
103 size_t numberOfFrames,
105 bool createdSuccessfully(unsigned desiredNumberOfChannels) const;
110 HeapVector<Member<DOMFloat32Array>> m_channels;
115 #endif // AudioBuffer_h