at.tuwien.ifs.feature.extraction.audio.input
Class AudioFileSegmentReader

java.lang.Object
  at.tuwien.ifs.feature.extraction.audio.input.AudioFileSegmentReader

public class AudioFileSegmentReader
extends java.lang.Object

Copyright Vienna University of Technology

Version:

$Id: AudioFileSegmentReader.java 173 2010-06-17 16:28:05Z mayer $

Author:

Thomas Lidy, Jakob Frank

Field Summary

private javax.sound.sampled.AudioFileFormat	audioFileFormat
private javax.sound.sampled.AudioFormat	audioFormat
private javax.sound.sampled.AudioInputStream	audioInputStream
private long	durationMicrosec
private java.io.InputStream	inStream
private boolean	isMpeg
private long	lengthInFrames
private javax.sound.sampled.AudioInputStream	mpegInputStream
private int	nChannels
private boolean	open
private int	sampleRate
private int	sampleSizeInBits
private long	streamLength

Constructor Summary

AudioFileSegmentReader(javax.sound.sampled.AudioInputStream inStream)

AudioFileSegmentReader(java.io.File file)

Method Summary

void	closeStream()
private static byte[]	convertFileToByteArray(java.io.File f)
int	getDurationInSeconds()
long	getNumberOfSamples()
int	getSampleRate()
int	getSampleSizeInBits()
void	openStream()
int	read(byte[] outputArray)
int	read(short[] outputArray)
int	readMono(short[] outputArray)
private void	readMpegProperties()
void	resetStream()

Methods inherited from class java.lang.Object

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

Field Detail

inStream

private java.io.InputStream inStream

audioInputStream

private javax.sound.sampled.AudioInputStream audioInputStream

mpegInputStream

private javax.sound.sampled.AudioInputStream mpegInputStream

audioFileFormat

private javax.sound.sampled.AudioFileFormat audioFileFormat

audioFormat

private javax.sound.sampled.AudioFormat audioFormat

open

private boolean open

isMpeg

private boolean isMpeg

sampleRate

private int sampleRate

sampleSizeInBits

private int sampleSizeInBits

nChannels

private int nChannels

lengthInFrames

private long lengthInFrames

durationMicrosec

private long durationMicrosec

streamLength

private long streamLength

Constructor Detail

AudioFileSegmentReader

public AudioFileSegmentReader(java.io.File file)
                       throws javax.sound.sampled.UnsupportedAudioFileException,
                              java.io.IOException

Throws:

javax.sound.sampled.UnsupportedAudioFileException

java.io.IOException

AudioFileSegmentReader

public AudioFileSegmentReader(javax.sound.sampled.AudioInputStream inStream)
                       throws javax.sound.sampled.UnsupportedAudioFileException,
                              java.io.IOException

Throws:

javax.sound.sampled.UnsupportedAudioFileException

java.io.IOException

Method Detail

convertFileToByteArray

private static byte[] convertFileToByteArray(java.io.File f)
                                      throws java.io.IOException

Throws:

java.io.IOException

getSampleRate

public int getSampleRate()

getSampleSizeInBits

public int getSampleSizeInBits()

getNumberOfSamples

public long getNumberOfSamples()

getDurationInSeconds

public int getDurationInSeconds()

readMpegProperties

private void readMpegProperties()

openStream

public void openStream()
                throws javax.sound.sampled.UnsupportedAudioFileException,
                       java.io.IOException

Throws:

javax.sound.sampled.UnsupportedAudioFileException

java.io.IOException

resetStream

public void resetStream()
                 throws java.io.IOException

Throws:

java.io.IOException

closeStream

public void closeStream()
                 throws java.io.IOException

Throws:

java.io.IOException

readMono

public int readMono(short[] outputArray)
             throws java.io.IOException

Throws:

java.io.IOException

read

public int read(short[] outputArray)
         throws java.io.IOException

Throws:

java.io.IOException

read

public int read(byte[] outputArray)
         throws java.io.IOException

Parameters:

outputArray - array into which input is read (# of bytes to read equals size of array)

Returns:

number of bytes actually read (can be smaller at the end of file, or -1 in case of errors)

Throws:

java.io.IOException