org/jsampler/DefaultAudioDeviceModel.java

/*
 *   JSampler - a java front-end for LinuxSampler
 *
 *   Copyright (C) 2005-2007 Grigor Iliev <grigor@grigoriliev.com>
 *
 *   This file is part of JSampler.
 *
 *   JSampler is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2
 *   as published by the Free Software Foundation.
 *
 *   JSampler 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.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with JSampler; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *   MA  02111-1307  USA
 */

package org.jsampler;

import java.util.Vector;

import javax.swing.SwingUtilities;

import org.jsampler.event.AudioDeviceEvent;
import org.jsampler.event.AudioDeviceListener;

import org.jsampler.task.Audio;

import org.linuxsampler.lscp.AudioOutputDevice;
import org.linuxsampler.lscp.Parameter;


/**
 * This class provides default implementation of the <code>AudioDeviceModel</code> interface.
 * @author Grigor Iliev
 */
public class DefaultAudioDeviceModel implements AudioDeviceModel {
        private AudioOutputDevice audioDevice;
        
        private final Vector<AudioDeviceListener> listeners = new Vector<AudioDeviceListener>();
        
        /**
         * Creates a new instance of <code>DefaultAudioDeviceModel</code> using the
         * specified non-null audio device.
         * @param audioDevice An <code>AudioOutputDevice</code> instance providing the current
         * settings of the audio device which will be represented by this model.
         * @throws IllegalArgumentException If <code>audioDevice</code> is <code>null</code>.
         */
        public
        DefaultAudioDeviceModel(AudioOutputDevice audioDevice) {
                if(audioDevice == null)
                        throw new IllegalArgumentException("audioDevice must be non null");
                
                this.audioDevice = audioDevice;
        }
        
        /**
         * Registers the specified listener to be notified when
         * the settings of the audio device are changed.
         * @param l The <code>AudioDeviceListener</code> to register.
         */
        public void
        addAudioDeviceListener(AudioDeviceListener l) { listeners.add(l); }
        
        /**
         * Removes the specified listener.
         * @param l The <code>AudioDeviceListener</code> to remove.
         */
        public void
        removeAudioDeviceListener(AudioDeviceListener l) { listeners.remove(l); }
        
        /**
         * Gets the numerical ID of this audio device.
         * @return The numerical ID of this audio device or
         * -1 if the device number is not set.
         */
        public int
        getDeviceId() { return audioDevice.getDeviceId(); }
        
        /**
         * Gets the current settings of the audio device represented by this model.
         * @return <code>AudioOutputDevice</code> instance providing
         * the current settings of the audio device represented by this model.
         */
        public AudioOutputDevice
        getDeviceInfo() { return audioDevice; }
        
        /**
         * Updates the settings of the audio device represented by this model.
         * @param device The new audio device settings.
         */
        public void
        setDeviceInfo(AudioOutputDevice device) {
                audioDevice = device;
                fireSettingsChanged();
        }
        
        /**
         * Sets whether the audio device is enabled or disabled.
         * @param active If <code>true</code> the audio device is enabled,
         * else the device is disabled.
         */
        public void
        setActive(boolean active) {
                if(active == getDeviceInfo().isActive()) return;
                
                audioDevice.setActive(active);
                fireSettingsChanged();
        }
        
        /**
         * Determines whether the audio device is active.
         * @return <code>true</code> if the device is enabled and <code>false</code> otherwise.
         */
        public boolean
        isActive() { return audioDevice.isActive(); }
        
        /**
         * Schedules a new task for enabling/disabling the audio device.
         * @param active If <code>true</code> the audio device is enabled,
         * else the device is disabled.
         */
        public void
        setBackendActive(boolean active) {
                CC.getTaskQueue().add(new Audio.EnableDevice(getDeviceId(), active));
        }
        
        /**
         * Schedules a new task for changing the channel number of the audio device.
         * @param channels The new number of audio channels.
         */
        public void
        setBackendChannelCount(int channels) {
                CC.getTaskQueue().add(new Audio.SetChannelCount(getDeviceId(), channels));
        }
        
        /**
         * Schedules a new task for altering a specific
         * setting of the specified audio output channel.
         * @param channel The channel number.
         * @param prm The parameter to be set.
         */
        public void
        setBackendChannelParameter(int channel, Parameter prm) {
                CC.getTaskQueue().add(new Audio.SetChannelParameter(getDeviceId(), channel, prm));
        }
        
        /**
         * Notifies listeners that the settings of the audio device are changed.
         */
        private void
        fireSettingsChanged() {
                fireSettingsChanged(new AudioDeviceEvent(this, this));
        }
        
        /**
         * Notifies listeners that the settings of the audio device are changed.
         * This method should be invoked from the event-dispatching thread.
         */
        private void
        fireSettingsChanged(final AudioDeviceEvent e) {
                SwingUtilities.invokeLater(new Runnable() {
                        public void
                        run() { for(AudioDeviceListener l : listeners) l.settingsChanged(e); }
                });
        }
}
1	/*
2	* JSampler - a java front-end for LinuxSampler
3	*
4	* Copyright (C) 2005-2007 Grigor Iliev <grigor@grigoriliev.com>
5	*
6	* This file is part of JSampler.
7	*
8	* JSampler is free software; you can redistribute it and/or modify
9	* it under the terms of the GNU General Public License version 2
10	* as published by the Free Software Foundation.
11	*
12	* JSampler is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with JSampler; if not, write to the Free Software
19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20	* MA 02111-1307 USA
21	*/
22
23	package org.jsampler;
24
25	import java.util.Vector;
26
27	import javax.swing.SwingUtilities;
28
29	import org.jsampler.event.AudioDeviceEvent;
30	import org.jsampler.event.AudioDeviceListener;
31
32	import org.jsampler.task.Audio;
33
34	import org.linuxsampler.lscp.AudioOutputDevice;
35	import org.linuxsampler.lscp.Parameter;
36
37
38	/**
39	* This class provides default implementation of the <code>AudioDeviceModel</code> interface.
40	* @author Grigor Iliev
41	*/
42	public class DefaultAudioDeviceModel implements AudioDeviceModel {
43	private AudioOutputDevice audioDevice;
44
45	private final Vector<AudioDeviceListener> listeners = new Vector<AudioDeviceListener>();
46
47	/**
48	* Creates a new instance of <code>DefaultAudioDeviceModel</code> using the
49	* specified non-null audio device.
50	* @param audioDevice An <code>AudioOutputDevice</code> instance providing the current
51	* settings of the audio device which will be represented by this model.
52	* @throws IllegalArgumentException If <code>audioDevice</code> is <code>null</code>.
53	*/
54	public
55	DefaultAudioDeviceModel(AudioOutputDevice audioDevice) {
56	if(audioDevice == null)
57	throw new IllegalArgumentException("audioDevice must be non null");
58
59	this.audioDevice = audioDevice;
60	}
61
62	/**
63	* Registers the specified listener to be notified when
64	* the settings of the audio device are changed.
65	* @param l The <code>AudioDeviceListener</code> to register.
66	*/
67	public void
68	addAudioDeviceListener(AudioDeviceListener l) { listeners.add(l); }
69
70	/**
71	* Removes the specified listener.
72	* @param l The <code>AudioDeviceListener</code> to remove.
73	*/
74	public void
75	removeAudioDeviceListener(AudioDeviceListener l) { listeners.remove(l); }
76
77	/**
78	* Gets the numerical ID of this audio device.
79	* @return The numerical ID of this audio device or
80	* -1 if the device number is not set.
81	*/
82	public int
83	getDeviceId() { return audioDevice.getDeviceId(); }
84
85	/**
86	* Gets the current settings of the audio device represented by this model.
87	* @return <code>AudioOutputDevice</code> instance providing
88	* the current settings of the audio device represented by this model.
89	*/
90	public AudioOutputDevice
91	getDeviceInfo() { return audioDevice; }
92
93	/**
94	* Updates the settings of the audio device represented by this model.
95	* @param device The new audio device settings.
96	*/
97	public void
98	setDeviceInfo(AudioOutputDevice device) {
99	audioDevice = device;
100	fireSettingsChanged();
101	}
102
103	/**
104	* Sets whether the audio device is enabled or disabled.
105	* @param active If <code>true</code> the audio device is enabled,
106	* else the device is disabled.
107	*/
108	public void
109	setActive(boolean active) {
110	if(active == getDeviceInfo().isActive()) return;
111
112	audioDevice.setActive(active);
113	fireSettingsChanged();
114	}
115
116	/**
117	* Determines whether the audio device is active.
118	* @return <code>true</code> if the device is enabled and <code>false</code> otherwise.
119	*/
120	public boolean
121	isActive() { return audioDevice.isActive(); }
122
123	/**
124	* Schedules a new task for enabling/disabling the audio device.
125	* @param active If <code>true</code> the audio device is enabled,
126	* else the device is disabled.
127	*/
128	public void
129	setBackendActive(boolean active) {
130	CC.getTaskQueue().add(new Audio.EnableDevice(getDeviceId(), active));
131	}
132
133	/**
134	* Schedules a new task for changing the channel number of the audio device.
135	* @param channels The new number of audio channels.
136	*/
137	public void
138	setBackendChannelCount(int channels) {
139	CC.getTaskQueue().add(new Audio.SetChannelCount(getDeviceId(), channels));
140	}
141
142	/**
143	* Schedules a new task for altering a specific
144	* setting of the specified audio output channel.
145	* @param channel The channel number.
146	* @param prm The parameter to be set.
147	*/
148	public void
149	setBackendChannelParameter(int channel, Parameter prm) {
150	CC.getTaskQueue().add(new Audio.SetChannelParameter(getDeviceId(), channel, prm));
151	}
152
153	/**
154	* Notifies listeners that the settings of the audio device are changed.
155	*/
156	private void
157	fireSettingsChanged() {
158	fireSettingsChanged(new AudioDeviceEvent(this, this));
159	}
160
161	/**
162	* Notifies listeners that the settings of the audio device are changed.
163	* This method should be invoked from the event-dispatching thread.
164	*/
165	private void
166	fireSettingsChanged(final AudioDeviceEvent e) {
167	SwingUtilities.invokeLater(new Runnable() {
168	public void
169	run() { for(AudioDeviceListener l : listeners) l.settingsChanged(e); }
170	});
171	}
172	}