interface EventTarget {
void addEventListener(DOMString type, EventListener? callback, optional boolean capture = false);
void removeEventListener(DOMString type, EventListener? callback, optional boolean capture = false);
boolean dispatchEvent(Event event);
};
/*
callback interface EventListener {
void handleEvent(Event event);
};
*/
// Callback interfaces are not supported yet, but that's ok
interface EventListener {};
callback DecodeSuccessCallback = void (AudioBuffer decodedData);
callback DecodeErrorCallback = void (DOMException error);
[Constructor]
interface AudioContext : EventTarget {
readonly attribute AudioDestinationNode destination;
readonly attribute float sampleRate;
readonly attribute double currentTime;
readonly attribute AudioListener listener;
AudioBuffer createBuffer(unsigned long numberOfChannels, unsigned long length, float sampleRate);
void decodeAudioData(ArrayBuffer audioData,
DecodeSuccessCallback successCallback,
optional DecodeErrorCallback errorCallback);
// AudioNode creation
AudioBufferSourceNode createBufferSource();
MediaElementAudioSourceNode createMediaElementSource(HTMLMediaElement mediaElement);
MediaStreamAudioSourceNode createMediaStreamSource(MediaStream mediaStream);
MediaStreamAudioDestinationNode createMediaStreamDestination();
ScriptProcessorNode createScriptProcessor(optional unsigned long bufferSize = 0,
optional unsigned long numberOfInputChannels = 2,
optional unsigned long numberOfOutputChannels = 2);
AnalyserNode createAnalyser();
GainNode createGain();
DelayNode createDelay(optional double maxDelayTime = 1.0);
BiquadFilterNode createBiquadFilter();
WaveShaperNode createWaveShaper();
PannerNode createPanner();
ConvolverNode createConvolver();
ChannelSplitterNode createChannelSplitter(optional unsigned long numberOfOutputs = 6);
ChannelMergerNode createChannelMerger(optional unsigned long numberOfInputs = 6);
DynamicsCompressorNode createDynamicsCompressor();
OscillatorNode createOscillator();
PeriodicWave createPeriodicWave(Float32Array real, Float32Array imag);
};
dictionary AudioBufferOptions {
unsigned long numberOfChannels = 1;
required unsigned long length;
float sampleRate;
};
[Constructor(AudioContext context, AudioBufferOptions options)]
interface AudioBuffer {
readonly attribute float sampleRate;
readonly attribute long length;
// in seconds
readonly attribute double duration;
readonly attribute long numberOfChannels;
Float32Array getChannelData(unsigned long channel);
};