org.tritonus.sampled.convert

Class SampleRateConversionProvider

java.lang.Object

javax.sound.sampled.spi.FormatConversionProvider

org.tritonus.share.sampled.convert.TFormatConversionProvider

org.tritonus.share.sampled.convert.TSimpleFormatConversionProvider

org.tritonus.sampled.convert.SampleRateConversionProvider

public class SampleRateConversionProvider
extends org.tritonus.share.sampled.convert.TSimpleFormatConversionProvider

This provider converts sample rate of 2 PCM streams.
It does:

• conversion of different sample rates
• conversion of unsigned/signed (only 8bit unsigned supported)
• conversion of big/small endian
• 8,16,24,32 bit conversion

It does NOT:

• change channel count
• accept a stream where the sample rates are equal. This case should be handled by the PCM2PCM converter

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SampleRateConversionProvider.SampleRateConverterStream SampleRateConverterStream
static class	SampleRateConversionProvider.SRCAudioFormat Obviously, this class is used to be able to set the frame rate/sample rate after the AudioFormat object has been created.

Field Summary

Fields

Modifier and Type	Field and Description
static javax.sound.sampled.AudioFormat.Encoding	PCM_SIGNED
static javax.sound.sampled.AudioFormat.Encoding	PCM_UNSIGNED

Fields inherited from class org.tritonus.share.sampled.convert.TFormatConversionProvider

EMPTY_ENCODING_ARRAY, EMPTY_FORMAT_ARRAY

Constructor Summary

Constructors

Constructor and Description
SampleRateConversionProvider() Constructor.

Method Summary

Modifier and Type	Method and Description
protected static long	convertLength(javax.sound.sampled.AudioFormat sourceFormat, javax.sound.sampled.AudioFormat targetFormat, long sourceLength)
protected static long	convertLength(float sourceSR, float targetSR, long sourceLength)
javax.sound.sampled.AudioInputStream	getAudioInputStream(javax.sound.sampled.AudioFormat targetFormat, javax.sound.sampled.AudioInputStream sourceStream)
javax.sound.sampled.AudioFormat[]	getTargetFormats(javax.sound.sampled.AudioFormat.Encoding targetEncoding, javax.sound.sampled.AudioFormat sourceFormat)
boolean	isConversionSupported(javax.sound.sampled.AudioFormat targetFormat, javax.sound.sampled.AudioFormat sourceFormat)

Methods inherited from class org.tritonus.share.sampled.convert.TSimpleFormatConversionProvider

disable, doMatch, doMatch, getCollectionSourceEncodings, getCollectionSourceFormats, getCollectionTargetEncodings, getCollectionTargetFormats, getFrameSize, getSourceEncodings, getTargetEncodings, getTargetEncodings, isAllowedSourceEncoding, isAllowedSourceFormat, isAllowedTargetEncoding, isAllowedTargetFormat, isSourceEncodingSupported, isTargetEncodingSupported, replaceNotSpecified

Methods inherited from class org.tritonus.share.sampled.convert.TFormatConversionProvider

getAudioInputStream, getMatchingFormat

Methods inherited from class javax.sound.sampled.spi.FormatConversionProvider

isConversionSupported

Methods inherited from class java.lang.Object

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

Field Detail

PCM_SIGNED

public static javax.sound.sampled.AudioFormat.Encoding PCM_SIGNED

PCM_UNSIGNED

public static javax.sound.sampled.AudioFormat.Encoding PCM_UNSIGNED

Constructor Detail

SampleRateConversionProvider

public SampleRateConversionProvider()

Constructor.

Method Detail

getAudioInputStream

public javax.sound.sampled.AudioInputStream getAudioInputStream(javax.sound.sampled.AudioFormat targetFormat,
                                                                javax.sound.sampled.AudioInputStream sourceStream)

Specified by:

getAudioInputStream in class javax.sound.sampled.spi.FormatConversionProvider

getTargetFormats

public javax.sound.sampled.AudioFormat[] getTargetFormats(javax.sound.sampled.AudioFormat.Encoding targetEncoding,
                                                          javax.sound.sampled.AudioFormat sourceFormat)

Overrides:

getTargetFormats in class org.tritonus.share.sampled.convert.TSimpleFormatConversionProvider

isConversionSupported

public boolean isConversionSupported(javax.sound.sampled.AudioFormat targetFormat,
                                     javax.sound.sampled.AudioFormat sourceFormat)

Overrides:

isConversionSupported in class org.tritonus.share.sampled.convert.TFormatConversionProvider

convertLength

protected static long convertLength(javax.sound.sampled.AudioFormat sourceFormat,
                                    javax.sound.sampled.AudioFormat targetFormat,
                                    long sourceLength)

convertLength

protected static long convertLength(float sourceSR,
                                    float targetSR,
                                    long sourceLength)