wavFiles
Class WavFile

java.lang.Object
  wavFiles.WavFile

public class WavFile
extends java.lang.Object

Field Summary

private java.io.File	file
private java.lang.String	fileMode
private java.lang.String	fileName
private byte[]	tempByteArray
private WavHeader	wavHeader
private WindowsFile	windowsFile

Constructor Summary

WavFile(java.lang.String fileName, java.lang.String fileMode)
Open a wav file for reading or writing.

Method Summary

void	close()
protected void	finalize()
WavHeader	getWavHeader()
private boolean	openForReading()
boolean	positionAtData()
private int	readData(byte[] byteArray) Read a number of bytes from the wav file.
int	readData(double[][] doubleArray) Read data into a preallocated double array.
WavHeader	readWavHeader()
private boolean	reportError(java.lang.String warningText)
private void	unpackInt16(double[][] doubleArray, byte[] tempByteArray, int samplesRead) Unpack an array of 16 bit integer data in little endian format.
private void	unpackInt24(double[][] doubleArray, byte[] tempByteArray, int samplesRead) Unpack a byte array of data in little endian format.

Methods inherited from class java.lang.Object

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

Field Detail

file

private java.io.File file

fileName

private java.lang.String fileName

fileMode

private java.lang.String fileMode

windowsFile

private WindowsFile windowsFile

wavHeader

private WavHeader wavHeader

tempByteArray

private byte[] tempByteArray

Constructor Detail

WavFile

public WavFile(java.lang.String fileName,
               java.lang.String fileMode)

Open a wav file for reading or writing.

Currently only supports reading

Parameters:

fileName - file name with full path

fileMode - mode = "r" for read or "w" for write

Method Detail

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable

openForReading

private boolean openForReading()

readWavHeader

public WavHeader readWavHeader()

getWavHeader

public WavHeader getWavHeader()

Returns:

the wavHeader

positionAtData

public boolean positionAtData()

reportError

private boolean reportError(java.lang.String warningText)

close

public void close()

readData

private int readData(byte[] byteArray)

Read a number of bytes from the wav file.

Parameters:

byteArray - byte array preallocated to desired length

Returns:

number of bytes actually read.

readData

public int readData(double[][] doubleArray)

Read data into a preallocated double array. The array should be 2 D, with the first dim being the number of channels, the second the number of samples to read.

Parameters:

doubleArray - double array to receive data

Returns:

number of samples read (should be doubleArray[0].length if no EOF)

unpackInt16

private void unpackInt16(double[][] doubleArray,
                         byte[] tempByteArray,
                         int samplesRead)

Unpack an array of 16 bit integer data in little endian format.

Parameters:

doubleArray -

tempByteArray -

samplesRead -

unpackInt24

private void unpackInt24(double[][] doubleArray,
                         byte[] tempByteArray,
                         int samplesRead)

Unpack a byte array of data in little endian format.

Parameters:

doubleArray -

tempByteArray -

samplesRead -