Package jmri.jmrit.audio

Class NullAudioBuffer

java.lang.Object

jmri.implementation.AbstractNamedBean

jmri.implementation.AbstractAudio

jmri.jmrit.audio.AbstractAudioBuffer

jmri.jmrit.audio.NullAudioBuffer

All Implemented Interfaces:

java.lang.Comparable<NamedBean>, Audio, PropertyChangeProvider, AudioBuffer, NamedBean

public class NullAudioBuffer
extends AbstractAudioBuffer

Null implementation of the Audio Buffer sub-class.

For now, no system-specific implementations are forseen - this will remain internal-only

This file is part of JMRI.

JMRI is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as published by the Free Software Foundation. See the "COPYING" file for a copy of this license.

JMRI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Nested Class Summary

Nested classes/interfaces inherited from interface jmri.NamedBean

NamedBean.BadNameException, NamedBean.BadSystemNameException, NamedBean.BadUserNameException, NamedBean.DisplayOptions, NamedBean.DuplicateSystemNameException

Field Summary

Fields inherited from class jmri.jmrit.audio.AbstractAudioBuffer

LOOP_POINT_BOTH, LOOP_POINT_END, LOOP_POINT_START

Fields inherited from class jmri.implementation.AbstractNamedBean

listenerRefs, mSystemName, register

Fields inherited from interface jmri.Audio

AT, BUFFER, CMD_BIND_BUFFER, CMD_FADE_IN, CMD_FADE_OUT, CMD_INIT_FACTORY, CMD_LOAD_SOUND, CMD_PAUSE, CMD_PAUSE_TOGGLE, CMD_PLAY, CMD_PLAY_TOGGLE, CMD_QUEUE_BUFFERS, CMD_RESET_POSITION, CMD_RESUME, CMD_REWIND, CMD_STOP, CMD_UNQUEUE_BUFFERS, DECIMAL_PLACES, FADE_IN, FADE_NONE, FADE_OUT, LISTENER, MAX_DISTANCE, SOURCE, STATE_EMPTY, STATE_INITIAL, STATE_LOADED, STATE_MOVING, STATE_PLAYING, STATE_POSITIONED, STATE_STOPPED, UP

Fields inherited from interface jmri.jmrit.audio.AudioBuffer

FORMAT_16BIT_5DOT1, FORMAT_16BIT_6DOT1, FORMAT_16BIT_7DOT1, FORMAT_16BIT_MONO, FORMAT_16BIT_QUAD, FORMAT_16BIT_STEREO, FORMAT_8BIT_5DOT1, FORMAT_8BIT_6DOT1, FORMAT_8BIT_7DOT1, FORMAT_8BIT_MONO, FORMAT_8BIT_QUAD, FORMAT_8BIT_STEREO, FORMAT_UNKNOWN

Fields inherited from interface jmri.NamedBean

DISPLAY_NAME_FORMAT, INCONSISTENT, PROPERTY_STATE, QUOTED_NAME_FORMAT, UNKNOWN

Constructor Summary

Constructors

Constructor	Description
NullAudioBuffer(java.lang.String systemName)	Constructor for new NullAudioBuffer with system name
NullAudioBuffer(java.lang.String systemName, java.lang.String userName)	Constructor for new NullAudioBuffer with system name and user name

Method Summary

Modifier and Type	Method	Description
protected void	cleanup()	Abstract method that concrete classes will implement to perform necessary cleanup routines.
protected void	generateLoopBuffers(int which)	Method used to generate any necessary loop buffers.
protected boolean	generateStreamingBuffers()	Internal method used to generate buffers for streaming
int	getFormat()	Retrieves the format of the sound sample stored in this buffer
int	getFrequency()	Retrieves the frequency of the sound sample stored in this buffer
long	getLength()	Retrieves the length of the sound sample stored in this buffer
protected boolean	loadBuffer()	Method used to load the actual sound data into the buffer
protected boolean	loadBuffer(java.io.InputStream stream)	Method used to load the actual sound data from an InputStream into the buffer
protected void	removeStreamingBuffers()	Internal method used to remove streaming buffers

Methods inherited from class jmri.jmrit.audio.AbstractAudioBuffer

getEndLoopPoint, getFrameSize, getStartLoopPoint, getSubType, getURL, isStreamed, isStreamedForced, loadBuffer, setEndLoopPoint, setEndLoopPoint, setInputStream, setStartLoopPoint, setStartLoopPoint, setStreamed, setStreamedForced, setURL, stateChanged

Methods inherited from class jmri.implementation.AbstractAudio

dispose, getBeanType, getState, getUsageReport, roundDecimal, roundDecimal, setState

Methods inherited from class jmri.implementation.AbstractNamedBean

addPropertyChangeListener, addPropertyChangeListener, addPropertyChangeListener, addPropertyChangeListener, compareSystemNameSuffix, describeState, equals, firePropertyChange, getComment, getDisplayName, getDisplayName, getListenerRef, getListenerRefs, getNumPropertyChangeListeners, getProperty, getPropertyChangeListeners, getPropertyChangeListeners, getPropertyChangeListenersByReference, getPropertyKeys, getSystemName, getUserName, hashCode, removeProperty, removePropertyChangeListener, removePropertyChangeListener, setComment, setProperty, setUserName, toString, toStringSuffix, updateListenerRef, vetoableChange

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jmri.NamedBean

addPropertyChangeListener, addPropertyChangeListener, compareSystemNameSuffix, compareTo, describeState, dispose, getBeanType, getComment, getDisplayName, getDisplayName, getListenerRef, getListenerRefs, getNumPropertyChangeListeners, getProperty, getPropertyChangeListenersByReference, getPropertyKeys, getState, getSystemName, getUsageReport, getUserName, removeProperty, setComment, setProperty, setState, setUserName, toString, updateListenerRef, vetoableChange

Methods inherited from interface jmri.beans.PropertyChangeProvider

addPropertyChangeListener, addPropertyChangeListener, getPropertyChangeListeners, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Constructor Detail

NullAudioBuffer

public NullAudioBuffer(java.lang.String systemName)

Constructor for new NullAudioBuffer with system name

Parameters:

systemName - AudioBuffer object system name (e.g. IAB4)

NullAudioBuffer

public NullAudioBuffer(java.lang.String systemName,
                       java.lang.String userName)

Constructor for new NullAudioBuffer with system name and user name

Parameters:

systemName - AudioBuffer object system name (e.g. IAB4)

userName - AudioBuffer object user name

Method Detail

loadBuffer

protected boolean loadBuffer(java.io.InputStream stream)

Description copied from class: AbstractAudioBuffer

Method used to load the actual sound data from an InputStream into the buffer

Specified by:

loadBuffer in class AbstractAudioBuffer

Parameters:

stream - InputStream containing sound data

Returns:

True if successful; False if not

loadBuffer

protected boolean loadBuffer()

Description copied from class: AbstractAudioBuffer

Method used to load the actual sound data into the buffer

Specified by:

loadBuffer in class AbstractAudioBuffer

Returns:

True if successful; False if not

generateLoopBuffers

protected void generateLoopBuffers(int which)

Description copied from class: AbstractAudioBuffer

Method used to generate any necessary loop buffers.

Specified by:

generateLoopBuffers in class AbstractAudioBuffer

Parameters:

which - the loop buffer to generate:
AbstractAudioBuffer.LOOP_POINT_START for the start loop buffer
AbstractAudioBuffer.LOOP_POINT_END for the end loop buffer
AbstractAudioBuffer.LOOP_POINT_BOTH for both loop buffers

generateStreamingBuffers

protected boolean generateStreamingBuffers()

Description copied from class: AbstractAudioBuffer

Internal method used to generate buffers for streaming

Specified by:

generateStreamingBuffers in class AbstractAudioBuffer

Returns:

True if successful; False if not

removeStreamingBuffers

protected void removeStreamingBuffers()

Description copied from class: AbstractAudioBuffer

Internal method used to remove streaming buffers

Specified by:

removeStreamingBuffers in class AbstractAudioBuffer

getFormat

public int getFormat()

Description copied from interface: AudioBuffer

Retrieves the format of the sound sample stored in this buffer

Applies only to sub-types:

• Buffer

Returns:

constant representing format

getLength

public long getLength()

Description copied from interface: AudioBuffer

Retrieves the length of the sound sample stored in this buffer

Applies only to sub-types:

• Buffer

Returns:

length of sound sample in frames

See Also:

AudioBuffer.getFrameSize()

getFrequency

public int getFrequency()

Description copied from interface: AudioBuffer

Retrieves the frequency of the sound sample stored in this buffer

Applies only to sub-types:

• Buffer

Returns:

frequency of sound sample in Hz

cleanup

protected void cleanup()

Description copied from class: AbstractAudio

Abstract method that concrete classes will implement to perform necessary cleanup routines.

This method is now included in dispose(). The caller can call dispose() to cleanup and deregister an audio object.

Specified by:

cleanup in class AbstractAudio