Package ipsk.audio.dsp

Class AudioBufferProcessor

java.lang.Object

ipsk.audio.dsp.AudioSampleProcessor

ipsk.audio.dsp.AudioFrameProcessor

ipsk.audio.dsp.AudioBufferProcessor

public abstract class AudioBufferProcessor
extends AudioFrameProcessor

Base class to process audio data buffers.

Author:

K.Jaensch, klausj@phonetik.uni-muenchen.de

Field Summary

Fields

Modifier and Type	Field	Description
protected AudioBufferProcessorListener	abpl
protected int	frames

Fields inherited from class ipsk.audio.dsp.AudioSampleProcessor

ae, af, AUDITORY_THRESHOLD, bigEndian, channels, DEFAULT_0DB_SOUND_PRESSURE, frameSize, maxValue, minValue, pp, resolutionBits, sampleSize, signed

Constructor Summary

Constructors

Constructor	Description
AudioBufferProcessor(AudioBufferProcessorListener abpl, javax.sound.sampled.AudioFormat af)	Create new processor for the given audio format.
AudioBufferProcessor(javax.sound.sampled.AudioFormat af)	Create new processor for the given audio format.

Method Summary

Modifier and Type	Method	Description
void	process(byte[] inData, int offset, int length)	Process the buffer data.
protected abstract void	processFrame(float[] val)	Process one frame.
boolean	setData(byte[] inData, int offset, int length)

Methods inherited from class ipsk.audio.dsp.AudioFrameProcessor

encode, encode, encodeToFloatValues, encodeValues, encodeValues, getDoubleValues, getFloatValues, getFloatValues, getFloatValues, getNormalizedInterleavedValues, getNormalizedInterleavedValues, getNormalizedValues

Methods inherited from class ipsk.audio.dsp.AudioSampleProcessor

amplitudeToSoundPressure, encodeValue, getChannels, getDoubleValue, getEncodedValue, getFloatValue, getFloatValue, getFrameSize, getNormalizedValue, getNormalizedValue, getSampleSize, setAudioFormat

Methods inherited from class java.lang.Object

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

Field Detail

abpl

protected AudioBufferProcessorListener abpl

frames

protected int frames

Constructor Detail

AudioBufferProcessor

public AudioBufferProcessor(javax.sound.sampled.AudioFormat af)
                     throws AudioFormatNotSupportedException

Create new processor for the given audio format. The audio frames are converted to normalized (-1.0 to 1.0) float values.

Parameters:

af - audio format to use

Throws:

AudioFormatNotSupportedException

AudioBufferProcessor

public AudioBufferProcessor(AudioBufferProcessorListener abpl,
                            javax.sound.sampled.AudioFormat af)
                     throws AudioFormatNotSupportedException

Create new processor for the given audio format. The listener is notified if the buffer processing has finished.

Parameters:

abpl - processor listener

af - audio format to use

Throws:

AudioFormatNotSupportedException

Method Detail

setData

public boolean setData(byte[] inData,
                       int offset,
                       int length)

process

public void process(byte[] inData,
                    int offset,
                    int length)

Process the buffer data. The audio frames are converted to float values for each channel.

Parameters:

inData - data buffer

offset - offset in the buffer from where to read data

length - length of data to process

processFrame

protected abstract void processFrame(float[] val)

Process one frame. This method has to be implemented.

Parameters:

val -