Class AudioBufferSourceNode

java.lang.Object

com.codename1.media.audio.AudioNode

com.codename1.media.audio.AudioScheduledSourceNode

com.codename1.media.audio.AudioBufferSourceNode

public final class AudioBufferSourceNode
extends AudioScheduledSourceNode

Plays AudioData, the Web Audio AudioBufferSourceNode. Its output has the data's channel count. Data at another sample rate is resampled with linear interpolation.

OfflineAudioContext audio = new OfflineAudioContext(2, 44100, 44100);
AudioData clip = audio.createBuffer(1, 44100, 44100); // or decodeAudioData
AudioBufferSourceNode src = audio.createBufferSource();
src.setBuffer(clip);
src.getPlaybackRate().setValue(1.5f);
src.connect(audio.getDestination());
src.start(audio.getCurrentTime() + 0.1);

Method Summary

Modifier and Type	Method	Description
AudioData	getBuffer()	The audio played.
AudioParam	getDetune()	A detune in cents, combined with the playback rate; a control rate parameter.
double	getLoopEnd()	The end of the loop in seconds of the data; 0 (the default), or any value not after the start, means the end of the data.
double	getLoopStart()	The start of the loop in seconds of the data.
AudioParam	getPlaybackRate()	The speed factor, 1 by default; negative plays backwards.
boolean	isLoop()	Whether playback loops between getLoopStart() and getLoopEnd().
void	setBuffer(AudioData buffer)	Sets the audio to play.
void	setLoop(boolean loop)	Turns looping on or off.
void	setLoopEnd(double loopEnd)	Sets the end of the loop.
void	setLoopStart(double loopStart)	Sets the start of the loop.
void	start(double when, double offset)	Starts playing at when from offset seconds into the data.
void	start(double when, double offset, double duration)	Starts playing at when from offset seconds into the data, for duration seconds of the data (loops included).

Methods inherited from class AudioScheduledSourceNode

setOnEnded, start, start, stop, stop

Methods inherited from class AudioNode

connect, connect, connect, connect, disconnect, disconnect, disconnect, disconnect, disconnect, getChannelCount, getChannelCountMode, getChannelInterpretation, getContext, getNumberOfInputs, getNumberOfOutputs, setChannelCount, setChannelCountMode, setChannelInterpretation

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

getPlaybackRate

public AudioParam getPlaybackRate()

The speed factor, 1 by default; negative plays backwards. A control rate parameter.

Returns

the parameter

getDetune

public AudioParam getDetune()

A detune in cents, combined with the playback rate; a control rate parameter.

Returns

the parameter

getBuffer

public AudioData getBuffer()

The audio played.

Returns

the data, or null

setBuffer

public void setBuffer(AudioData buffer)

Sets the audio to play. It can be set once; a source without data plays one channel of silence.

Parameters

• buffer: the data

isLoop

public boolean isLoop()

Whether playback loops between getLoopStart() and getLoopEnd().

Returns

true when looping

setLoop

public void setLoop(boolean loop)

Turns looping on or off.

Parameters

• loop: true to loop

getLoopStart

public double getLoopStart()

The start of the loop in seconds of the data.

Returns

seconds

setLoopStart

public void setLoopStart(double loopStart)

Sets the start of the loop.

Parameters

• loopStart: seconds of the data

getLoopEnd

public double getLoopEnd()

The end of the loop in seconds of the data; 0 (the default), or any value not after the start, means the end of the data.

Returns

seconds

setLoopEnd

public void setLoopEnd(double loopEnd)

Sets the end of the loop.

Parameters

• loopEnd: seconds of the data

start

public void start(double when,
 double offset)

Starts playing at when from offset seconds into the data.

Parameters

• when: context time in seconds

• offset: where in the data to start

start

public void start(double when,
 double offset,
 double duration)

Starts playing at when from offset seconds into the data, for duration seconds of the data (loops included).

Parameters

• when: context time in seconds

• offset: where in the data to start, 0 or more

• duration: how much of the data to play, more than 0