Package jmri.jmrit.sound

Class WavBuffer

java.lang.Object

jmri.jmrit.sound.WavBuffer

public class WavBuffer
extends Object

Wrap a byte array to provide WAV file functionality

Field Summary

Fields

Modifier and Type	Field	Description
(package private) byte[]	buffer
(package private) int	dataOffset
(package private) int	fmtOffset

Constructor Summary

Constructors

Constructor	Description
WavBuffer(byte[] content)	Create from already existing byte array.
WavBuffer(File file)	Create from contents of file.

Method Summary

Modifier and Type	Method	Description
int	findHeader(int i1, int i2, int i3, int i4)	Find a specific header in the .wav fragment.
(package private) int	fourByte(int index)
boolean	getBigEndian()
byte[]	getByteArray()
int	getChannels()
int	getDataEnd()	Offset to the last data byte in the buffer.
int	getDataSize()	Size of the data segment in bytes.
int	getDataStart()	Offset to the first data byte in the buffer.
float	getSampleRate()
int	getSampleSizeInBits()
boolean	getSigned()
(package private) int	twoByte(int index)

Methods inherited from class java.lang.Object

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

Field Details

fmtOffset

int fmtOffset

dataOffset

int dataOffset

buffer

byte[] buffer

Constructor Details

WavBuffer

public WavBuffer(byte[] content)

Create from already existing byte array.

Parameters:

content - a WAV format byte array, starting with a RIFF header

WavBuffer

public WavBuffer(File file)
          throws IOException

Create from contents of file. The file contents are expected to be in .wav format, starting with a RIFF header.

Parameters:

file - file containing the .wav.

Throws:

IOException - on error.

Method Details

findHeader

public int findHeader(int i1,
 int i2,
 int i3,
 int i4)

Find a specific header in the .wav fragment.

Parameters:

i1 - index 1.

i2 - index 2.

i3 - index 3.

i4 - index 4.

Returns:

offset of the 1st byte of the header in the buffer

getSampleRate

public float getSampleRate()

getSampleSizeInBits

public int getSampleSizeInBits()

getChannels

public int getChannels()

getBigEndian

public boolean getBigEndian()

getSigned

public boolean getSigned()

getDataStart

public int getDataStart()

Offset to the first data byte in the buffer.

Returns:

first data byte offset.

getDataSize

public int getDataSize()

Size of the data segment in bytes.

Returns:

data size in bytes.

getDataEnd

public int getDataEnd()

Offset to the last data byte in the buffer. One more than this points to the next header.

Returns:

data end value.

twoByte

int twoByte(int index)

fourByte

int fourByte(int index)

getByteArray

public byte[] getByteArray()