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	iliev	787	/*
2			* JSampler - a java front-end for LinuxSampler
3			*
4	iliev	1143	* Copyright (C) 2005-2007 Grigor Iliev <grigor@grigoriliev.com>
5	iliev	787	*
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	iliev	1143	import org.jsampler.task.Audio;
33
34	iliev	787	import org.linuxsampler.lscp.AudioOutputDevice;
35	iliev	1143	import org.linuxsampler.lscp.Parameter;
36	iliev	787
37
38			/**
39	iliev	911	* This class provides default implementation of the <code>AudioDeviceModel</code> interface.
40	iliev	787	* @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	iliev	1143	getDeviceId() { return audioDevice.getDeviceId(); }
84	iliev	787
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	iliev	1143	* 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	iliev	787	* 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			}