org.jitsi.impl.neomedia.codec.audio.speex

Class SpeexResampler

java.lang.Object

net.sf.fmj.media.AbstractControls

net.sf.fmj.media.AbstractPlugIn

net.sf.fmj.media.AbstractCodec

org.jitsi.impl.neomedia.codec.AbstractCodec2

org.jitsi.impl.neomedia.codec.audio.speex.SpeexResampler

All Implemented Interfaces:

javax.media.Codec, javax.media.Controls, javax.media.PlugIn

public class SpeexResampler
extends AbstractCodec2

Implements an audio resampler using Speex.

Author:

Lyubomir Marinov

Field Summary

Fields inherited from class org.jitsi.impl.neomedia.codec.AbstractCodec2

BUFFER_FLAG_FEC, BUFFER_FLAG_PLC, EMPTY_FORMATS, features, MAX_AUDIO_SEQUENCE_NUMBERS_TO_PLC, SEQUENCE_MAX, SEQUENCE_MIN

Fields inherited from class net.sf.fmj.media.AbstractCodec

inputFormat, inputFormats, opened, outputFormat

Fields inherited from interface javax.media.PlugIn

BUFFER_PROCESSED_FAILED, BUFFER_PROCESSED_OK, INPUT_BUFFER_NOT_CONSUMED, OUTPUT_BUFFER_NOT_FILLED, PLUGIN_TERMINATED

Constructor Summary

Constructors

Constructor and Description
SpeexResampler() Initializes a new SpeexResampler instance.

Method Summary

Modifier and Type	Method and Description
protected void	doClose()
protected void	doOpen() Opens this Codec and acquires the resources that it needs to operate.
protected int	doProcess(javax.media.Buffer inBuffer, javax.media.Buffer outBuffer) Resamples audio from a specific input Buffer into a specific output Buffer.
protected javax.media.Format[]	getMatchingOutputFormats(javax.media.Format inputFormat) Get the output formats matching a specific input format.
javax.media.Format	setInputFormat(javax.media.Format format) Sets the Format of the media data to be input for processing in this Codec.

Methods inherited from class org.jitsi.impl.neomedia.codec.AbstractCodec2

calculateLostSeqNoCount, close, discardOutputBuffer, getName, getSupportedOutputFormats, incrementSeqNo, matches, open, process, setOutputFormat, specialize, updateOutput, validateByteArraySize, validateShortArraySize

Methods inherited from class net.sf.fmj.media.AbstractCodec

checkInputBuffer, dump, getInputFormat, getOutputFormat, getSupportedInputFormats, isEOM, propagateEOM

Methods inherited from class net.sf.fmj.media.AbstractPlugIn

reset

Methods inherited from class net.sf.fmj.media.AbstractControls

addControl, getControl, getControls, removeControl

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.media.PlugIn

reset

Methods inherited from interface javax.media.Controls

getControl, getControls

Constructor Detail

SpeexResampler

public SpeexResampler()

Initializes a new SpeexResampler instance.

Method Detail

doClose

protected void doClose()

Specified by:

doClose in class AbstractCodec2

See Also:

AbstractCodec2.doClose()

doOpen

protected void doOpen()
               throws javax.media.ResourceUnavailableException

Opens this Codec and acquires the resources that it needs to operate. A call to PlugIn.open() on this instance will result in a call to doOpen only if AbstractCodec.opened is false. All required input and/or output formats are assumed to have been set on this Codec before doOpen is called.

Specified by:

doOpen in class AbstractCodec2

Throws:

javax.media.ResourceUnavailableException - if any of the resources that this Codec needs to operate cannot be acquired

See Also:

AbstractCodec2.doOpen()

doProcess

protected int doProcess(javax.media.Buffer inBuffer,
                        javax.media.Buffer outBuffer)

Resamples audio from a specific input Buffer into a specific output Buffer.

Specified by:

doProcess in class AbstractCodec2

Parameters:

inBuffer - input Buffer

outBuffer - output Buffer

Returns:

BUFFER_PROCESSED_OK if inBuffer has been successfully processed

See Also:

AbstractCodec2.doProcess(Buffer, Buffer)

getMatchingOutputFormats

protected javax.media.Format[] getMatchingOutputFormats(javax.media.Format inputFormat)

Get the output formats matching a specific input format.

Overrides:

getMatchingOutputFormats in class AbstractCodec2

Parameters:

inputFormat - the input format to get the matching output formats of

Returns:

the output formats matching the specified input format

See Also:

AbstractCodec2.getMatchingOutputFormats(Format)

setInputFormat

public javax.media.Format setInputFormat(javax.media.Format format)

Sets the Format of the media data to be input for processing in this Codec.

Specified by:

setInputFormat in interface javax.media.Codec

Overrides:

setInputFormat in class AbstractCodec2

Parameters:

format - the Format of the media data to be input for processing in this Codec

Returns:

the Format of the media data to be input for processing in this Codec if format is compatible with this Codec; otherwise, null

See Also:

AbstractCodec2.setInputFormat(Format)