com.jsyn.io

Class AudioFifo

java.lang.Object

com.jsyn.io.AudioFifo

All Implemented Interfaces:

AudioInputStream, AudioOutputStream

public class AudioFifo
extends java.lang.Object
implements AudioInputStream, AudioOutputStream

FIFO that implements AudioInputStream, AudioOutputStream interfaces. This can be used to send audio data between different threads. The reads or writes may or may not wait based on flags.

Author:

Phil Burk (C) 2010 Mobileer Inc

Constructor Summary

Constructors

Constructor and Description
AudioFifo()

Method Summary

Modifier and Type	Method and Description
void	allocate(int size)
int	available() How many samples are available for reading without blocking?
void	close()
static boolean	isPowerOfTwo(int size)
boolean	isReadWaitEnabled()
boolean	isWriteWaitEnabled()
double	read()
int	read(double[] buffer) Try to fill the entire buffer.
int	read(double[] buffer, int start, int count) Read from the stream.
void	setReadWaitEnabled(boolean enabled) If true then a subsequent read call will wait if there is no data to read.
void	setWriteWaitEnabled(boolean enabled) If true then a subsequent write call will wait if there is no room to write.
int	size()
void	write(double value)
void	write(double[] buffer)
void	write(double[] buffer, int start, int count)

Methods inherited from class java.lang.Object

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

Constructor Detail

AudioFifo

public AudioFifo()

Method Detail

allocate

public void allocate(int size)

Parameters:

size - Number of doubles in the FIFO. Must be a power of 2. Eg. 1024.

size

public int size()

isPowerOfTwo

public static boolean isPowerOfTwo(int size)

available

public int available()

How many samples are available for reading without blocking?

Specified by:

available in interface AudioInputStream

Returns:

number of samples currently available to read without blocking

close

public void close()

Specified by:

close in interface AudioInputStream

Specified by:

close in interface AudioOutputStream

read

public double read()

Specified by:

read in interface AudioInputStream

write

public void write(double value)

Specified by:

write in interface AudioOutputStream

read

public int read(double[] buffer)

Description copied from interface: AudioInputStream

Try to fill the entire buffer.

Specified by:

read in interface AudioInputStream

Returns:

number of samples read

read

public int read(double[] buffer,
                int start,
                int count)

Description copied from interface: AudioInputStream

Read from the stream. Block until some data is available.

Specified by:

read in interface AudioInputStream

start - index of first sample in buffer

count - number of samples to read, for example count=8 for 4 stereo frames

Returns:

number of samples read

write

public void write(double[] buffer)

Specified by:

write in interface AudioOutputStream

write

public void write(double[] buffer,
                  int start,
                  int count)

Specified by:

write in interface AudioOutputStream

setWriteWaitEnabled

public void setWriteWaitEnabled(boolean enabled)

If true then a subsequent write call will wait if there is no room to write.

setReadWaitEnabled

public void setReadWaitEnabled(boolean enabled)

If true then a subsequent read call will wait if there is no data to read.

isWriteWaitEnabled

public boolean isWriteWaitEnabled()

isReadWaitEnabled

public boolean isReadWaitEnabled()