org.tritonus.sampled.convert.lame
Class Mp3LameFormatConversionProvider

java.lang.Object
  javax.sound.sampled.spi.FormatConversionProvider
      org.tritonus.share.sampled.convert.TFormatConversionProvider
          org.tritonus.share.sampled.convert.TSimpleFormatConversionProvider
              org.tritonus.sampled.convert.lame.Mp3LameFormatConversionProvider

public class Mp3LameFormatConversionProvider

extends TSimpleFormatConversionProvider

ConversionProvider for encoding MP3 audio files with the lame lib.

It uses a sloppy implementation of the MPEG1L3 encoding: It is used as a common denominator. So users can always ask for MPEG1L3 encoding but may get in fact an MPEG2L3 or MPEG2.5L3 encoded stream.

Author:

Florian Bomers

Nested Class Summary

static class

Mp3LameFormatConversionProvider.EncodedMpegAudioInputStream

Field Summary

static AudioFormat.Encoding	MPEG1L3
static AudioFormat.Encoding	MPEG2DOT5L3
static AudioFormat.Encoding	MPEG2L3

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

EMPTY_ENCODING_ARRAY, EMPTY_FORMAT_ARRAY

Constructor Summary

Mp3LameFormatConversionProvider()
Constructor.

Method Summary

AudioInputStream	getAudioInputStream(AudioFormat targetFormat, AudioInputStream audioInputStream)
protected AudioFormat	getDefaultTargetFormat(AudioFormat targetFormat, AudioFormat sourceFormat, boolean allowNotSpecified)
protected int	getFrameSize(AudioFormat.Encoding encoding, float sampleRate, int sampleSize, int channels, float frameRate, boolean bigEndian, int oldFrameSize) Calculates the frame size for the given format description.
AudioFormat[]	getTargetFormats(AudioFormat.Encoding targetEncoding, AudioFormat sourceFormat) This implementation assumes that the converter can convert from each of its source formats to each of its target formats.

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

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

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

getAudioInputStream, getMatchingFormat, isConversionSupported

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

MPEG1L3

public static final AudioFormat.Encoding MPEG1L3

MPEG2L3

public static final AudioFormat.Encoding MPEG2L3

MPEG2DOT5L3

public static final AudioFormat.Encoding MPEG2DOT5L3

Constructor Detail

Mp3LameFormatConversionProvider

public Mp3LameFormatConversionProvider()

Constructor.

Method Detail

getAudioInputStream

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
                                            AudioInputStream audioInputStream)

Specified by:

getAudioInputStream in class FormatConversionProvider

getTargetFormats

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

Description copied from class: TSimpleFormatConversionProvider

This implementation assumes that the converter can convert from each of its source formats to each of its target formats. If this is not the case, the converter has to override this method.

Overrides:

getTargetFormats in class TSimpleFormatConversionProvider

getDefaultTargetFormat

protected AudioFormat getDefaultTargetFormat(AudioFormat targetFormat,
                                             AudioFormat sourceFormat,
                                             boolean allowNotSpecified)

getFrameSize

protected int getFrameSize(AudioFormat.Encoding encoding,
                           float sampleRate,
                           int sampleSize,
                           int channels,
                           float frameRate,
                           boolean bigEndian,
                           int oldFrameSize)

Description copied from class: TSimpleFormatConversionProvider

Calculates the frame size for the given format description. The default implementation returns AudioSystem.NOT_SPECIFIED if either sampleSize or channels is AudioSystem.NOT_SPECIFIED, otherwise sampleSize*channels/8 is returned.

If this does not reflect the way to calculate the right frame size, inheriting classes should overwrite this method if they use replaceNotSpecified(...). It is not used elsewhere in this class.

Overrides:

getFrameSize in class TSimpleFormatConversionProvider