cnrg.itx.datax.devices
Class MicrophoneSource

java.lang.Object
  |
  +--cnrg.itx.datax.devices.MicrophoneSource

public class MicrophoneSource

extends java.lang.Object

implements java.lang.Runnable, Source

This class encapsulates the workings of the Microphone. It uses the jaudio subsystem to talk to hardware. Therefore, jaudio.dll must be in your path. .... Talk about usage..

Field Summary

private boolean	bAlive
private boolean	bMute
private byte[]	bSilence
private int	bytesWritten Attribute for storing the number of bytes written by this source.
private Channel	c
private int	iDevice
private JAudioBlock[]	jabBlocks
private JAudioDevice	jad
private Stats	microphoneStats
private static int	QUEUE_SIZE JAudioBlock queue size
static int	SAMPLE_BITS
static int	SAMPLE_RATE Audio properties (8kHz @ 8 bits / sample)
static int	SAMPLE_SIZE Sample size (just use the Channel sample size, although this isn't required)
static byte	SILENCE
private java.lang.Thread	thread

Constructor Summary

MicrophoneSource(Channel c)
Creates the microphone.

Method Summary

void	close() stops playout.
PropertiesCollection	getProperties() Returns a collection of properties supported.
Stats	getStatistics() Method to get the statistics of the microphone device.
boolean	mute(boolean mute) Mutes the playout.
void	run() Method to run the thread.
void	setPeerProperties(PropertiesCollection pc) Interface to set the given properties collection into the device.
void	setProperties(PropertiesCollection pc) Sets the given properties collection into the device (local);
void	start() Method to start the thread of the source
void	stop() Method to stop the thread.

Methods inherited from class java.lang.Object

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

Field Detail

SAMPLE_RATE

public static final int SAMPLE_RATE

Audio properties (8kHz @ 8 bits / sample)

SAMPLE_BITS

public static final int SAMPLE_BITS

SILENCE

public static final byte SILENCE

SAMPLE_SIZE

public static final int SAMPLE_SIZE

Sample size (just use the Channel sample size, although this isn't required)

QUEUE_SIZE

private static final int QUEUE_SIZE

JAudioBlock queue size

jad

private JAudioDevice jad

jabBlocks

private JAudioBlock[] jabBlocks

bAlive

private boolean bAlive

bMute

private boolean bMute

bSilence

private byte[] bSilence

thread

private java.lang.Thread thread

bytesWritten

private int bytesWritten

Attribute for storing the number of bytes written by this source.

c

private Channel c

iDevice

private int iDevice

microphoneStats

private Stats microphoneStats

Constructor Detail

MicrophoneSource

public MicrophoneSource(Channel c)
                 throws DataException

Creates the microphone. Allocates all resources.

Throws:

DataException - thrown when resources could not be allocated.

Method Detail

start

public void start()

Method to start the thread of the source

Specified by:

start in interface Source

stop

public void stop()

Method to stop the thread.

run

public void run()

Method to run the thread.

Specified by:

run in interface java.lang.Runnable

close

public void close()

stops playout.

Specified by:

close in interface Source

mute

public boolean mute(boolean mute)

Mutes the playout.

Specified by:

mute in interface Source

Parameters:

mute - The new state.

getStatistics

public Stats getStatistics()

Method to get the statistics of the microphone device.

getProperties

public PropertiesCollection getProperties()
                                   throws DataException

Returns a collection of properties supported.

setProperties

public void setProperties(PropertiesCollection pc)
                   throws DataException

Sets the given properties collection into the device (local);

setPeerProperties

public void setPeerProperties(PropertiesCollection pc)
                       throws DataException

Interface to set the given properties collection into the device. WOrks under the assumption that this is the properties collection of the peer.