net.sf.fmj.media.protocol.javasound
Class DataSource

java.lang.Object
  javax.media.protocol.DataSource
      javax.media.protocol.PushBufferDataSource
          net.sf.fmj.media.protocol.javasound.DataSource

All Implemented Interfaces:

Controls, Duration, CaptureDevice

public class DataSource
extends PushBufferDataSource
implements CaptureDevice

DataSource for JavaSound audio recording. TODO: we should maybe make this a PullBufferDataSource, because otherwise it has to constantly poll javasound to see if new data is available. JMF's is a PushBufferDataSource though. TODO: do transfer handler notifications asynchronously

Author:

Ken Larson mgodehardt: added double buffering thru a ringbuffer, the buffer is filled by the AvailabilityThread, the TrackThread is fetching the data from the buffer, this can lead to dropped frames, increasing the size of the ringbuffer leads to more latency

Field Summary

protected java.lang.Object[]

controls

Fields inherited from interface javax.media.Duration

DURATION_UNBOUNDED, DURATION_UNKNOWN

Constructor Summary

DataSource()

Method Summary

void	connect()
void	disconnect()
CaptureDeviceInfo	getCaptureDeviceInfo()
java.lang.String	getContentType()
java.lang.Object	getControl(java.lang.String controlType)
java.lang.Object[]	getControls()
Time	getDuration()
FormatControl[]	getFormatControls()
PushBufferStream[]	getStreams()
static Format[]	querySupportedFormats(int mixerIndex)
void	start()
void	stop()

Methods inherited from class javax.media.protocol.DataSource

getLocator, initCheck, setLocator

Methods inherited from class java.lang.Object

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

Field Detail

controls

protected java.lang.Object[] controls

Constructor Detail

DataSource

public DataSource()

Method Detail

connect

public void connect()
             throws java.io.IOException

Specified by:

connect in interface CaptureDevice

Specified by:

connect in class DataSource

Throws:

java.io.IOException

disconnect

public void disconnect()

Specified by:

disconnect in interface CaptureDevice

Specified by:

disconnect in class DataSource

getContentType

public java.lang.String getContentType()

Specified by:

getContentType in class DataSource

getControl

public java.lang.Object getControl(java.lang.String controlType)

Specified by:

getControl in interface Controls

Specified by:

getControl in class DataSource

getControls

public java.lang.Object[] getControls()

Specified by:

getControls in interface Controls

Specified by:

getControls in class DataSource

start

public void start()
           throws java.io.IOException

Specified by:

start in interface CaptureDevice

Specified by:

start in class DataSource

Throws:

java.io.IOException

stop

public void stop()
          throws java.io.IOException

Specified by:

stop in interface CaptureDevice

Specified by:

stop in class DataSource

Throws:

java.io.IOException

getDuration

public Time getDuration()

Specified by:

getDuration in interface Duration

Specified by:

getDuration in class DataSource

getStreams

public PushBufferStream[] getStreams()

Specified by:

getStreams in class PushBufferDataSource

querySupportedFormats

public static Format[] querySupportedFormats(int mixerIndex)

getCaptureDeviceInfo

public CaptureDeviceInfo getCaptureDeviceInfo()

Specified by:

getCaptureDeviceInfo in interface CaptureDevice

getFormatControls

public FormatControl[] getFormatControls()

Specified by:

getFormatControls in interface CaptureDevice