nidaqdev

Class NIFilePlayback

java.lang.Object

nidaqdev.NIFilePlayback

All Implemented Interfaces:

FilePlaybackDevice

public class NIFilePlayback
extends java.lang.Object
implements FilePlaybackDevice

PArt of the system for playback from wav files. The wav file playback system has a number of subsystems, currently including sound card and NI card outputs.
This is NOT the class used to play back data actually acquired using NI cards.

Author:

Doug Gillespie

Constructor Summary

Constructors

Constructor and Description
NIFilePlayback(FilePlayback filePlayback)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String[]	getDeviceNames()
java.lang.String	getName()
int	getNumPlaybackChannels(int devNum) Get's the number of playback channels for a given device.
boolean	playData(RawDataUnit[] data) Play some data.
boolean	preparePlayback(PlaybackParameters playbackParameters) Prepare playback
boolean	stopPlayback() Stop playback, clean up buffers, etc.

Methods inherited from class java.lang.Object

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

Constructor Detail

NIFilePlayback

public NIFilePlayback(FilePlayback filePlayback)

Method Detail

getDeviceNames

public java.lang.String[] getDeviceNames()

Specified by:

getDeviceNames in interface FilePlaybackDevice

Returns:

a list of device names

getName

public java.lang.String getName()

Specified by:

getName in interface FilePlaybackDevice

Returns:

a name for this type of playback device

getNumPlaybackChannels

public int getNumPlaybackChannels(int devNum)

Description copied from interface: FilePlaybackDevice

Get's the number of playback channels for a given device.

Specified by:

getNumPlaybackChannels in interface FilePlaybackDevice

Parameters:

devNum - device number

Returns:

number of channels

playData

public boolean playData(RawDataUnit[] data)

Description copied from interface: FilePlaybackDevice

Play some data. The length of the data array must correspond to the number of channels.

Specified by:

playData in interface FilePlaybackDevice

Parameters:

data - array of raw audio data units.

Returns:

true if played OK.

preparePlayback

public boolean preparePlayback(PlaybackParameters playbackParameters)

Description copied from interface: FilePlaybackDevice

Prepare playback

Specified by:

preparePlayback in interface FilePlaybackDevice

Parameters:

playbackParameters - parameters

Returns:

true if all Ok. S

stopPlayback

public boolean stopPlayback()

Description copied from interface: FilePlaybackDevice

Stop playback, clean up buffers, etc.

Specified by:

stopPlayback in interface FilePlaybackDevice

Returns:

true if all cleaned up Ok.