Class Alsa.Player

java.lang.Object

net.avadeaux.klipspringer.alsa.Alsa

net.avadeaux.klipspringer.alsa.Alsa.Player

All Implemented Interfaces:

Closeable, AutoCloseable, Device.Player, PcmWriter

Enclosing class:

Alsa

public static class Alsa.Player
extends Alsa
implements Device.Player

Class for sending PCM data to an ALSA device.

Nested Class Summary

Nested classes/interfaces inherited from class net.avadeaux.klipspringer.alsa.Alsa

Alsa.Player, Alsa.Tuner

Nested classes/interfaces inherited from interface net.avadeaux.klipspringer.codec.Device.Player

Device.Player.Factory

Field Summary

Fields

Modifier and Type	Field	Description
static final Map<String,Device>	devices	Map from available output device names to the device objects.

Constructor Summary

Constructors

Constructor	Description
Player(Device device, PcmFormat format, double bufferSecs, int recoveryAttempts)	Creates a player to output PCM to the given device in the given format, specifying the size of the external buffer, and the number of recovery attempts in case of buffer underrun.

Method Summary

Modifier and Type	Method	Description
int	bufferedFrames()	Gets an estimate of how many frames are currently buffered, waiting to be played.
boolean	write(ByteBuffer data)	Writes a block of audio data in the bit layout expected by the player.

Methods inherited from class net.avadeaux.klipspringer.alsa.Alsa

canPause, close, drain, format, layout, pause, unpause

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.avadeaux.klipspringer.codec.Device.Player

canPause, drain, format, layout, pause, unpause

Methods inherited from interface net.avadeaux.klipspringer.codec.PcmWriter

close

Field Details

devices

public static final Map<String,Device> devices

Map from available output device names to the device objects.

Constructor Details

Player

public Player(Device device,
 PcmFormat format,
 double bufferSecs,
 int recoveryAttempts)
       throws IOException

Creates a player to output PCM to the given device in the given format, specifying the size of the external buffer, and the number of recovery attempts in case of buffer underrun. Available devices are obtained through devices. A reasonable number of recovery attempts is 2, unless you want to set it to 0 and get an exception as soon as an underrun happens.

Throws:

IOException

Method Details

write

public boolean write(ByteBuffer data)
              throws IOException

Description copied from interface: Device.Player

Writes a block of audio data in the bit layout expected by the player. For most players, it makes sense to always return true, since players do not usually have a limit on the stream.

Specified by:

write in interface Device.Player

Specified by:

write in interface PcmWriter

Throws:

IOException

bufferedFrames

public int bufferedFrames()
                   throws IOException

Description copied from interface: Device.Player

Gets an estimate of how many frames are currently buffered, waiting to be played. Default returns zero.

Specified by:

bufferedFrames in interface Device.Player

Throws:

IOException