/[svn]/jsampler/trunk/src/org/jsampler/task/UpdateChannels.java
ViewVC logotype

Contents of /jsampler/trunk/src/org/jsampler/task/UpdateChannels.java

Parent Directory Parent Directory | Revision Log Revision Log


Revision 1737 - (show annotations) (download)
Thu May 8 17:26:19 2008 UTC (15 years, 11 months ago) by iliev
File size: 3655 byte(s)
* Major memory optimizations when too many sampler channels are present

1 /*
2 * JSampler - a java front-end for LinuxSampler
3 *
4 * Copyright (C) 2005-2006 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.task;
24
25 import java.util.Vector;
26 import java.util.logging.Level;
27
28 import org.jsampler.CC;
29 import org.jsampler.HF;
30 import org.jsampler.SamplerChannelModel;
31 import org.jsampler.SamplerModel;
32
33 import org.linuxsampler.lscp.SamplerChannel;
34
35 import net.sf.juife.Task;
36
37 import static org.jsampler.JSI18n.i18n;
38
39
40 /**
41 * This task updates the sampler channel list.
42 * @author Grigor Iliev
43 */
44 public class UpdateChannels extends EnhancedTask {
45 /** Creates a new instance of <code>UpdateChannels</code>. */
46 public
47 UpdateChannels() {
48 setTitle("UpdateChannels_task");
49 setDescription(i18n.getMessage("UpdateChannels.description"));
50 }
51
52 /** The entry point of the task. */
53 public void
54 run() {
55 try {
56 SamplerModel sm = CC.getSamplerModel();
57 Integer[] chnIDs = CC.getClient().getSamplerChannelIDs();
58
59 boolean found = false;
60
61 boolean oldValue = CC.getSamplerModel().getChannelListIsAdjusting();
62
63 javax.swing.SwingUtilities.invokeAndWait(new Runnable() {
64 public void
65 run() {
66 CC.getSamplerModel().setChannelListIsAdjusting(true);
67 CC.getMainFrame().setAutoUpdateChannelListUI(false);
68 }
69 });
70
71 for(SamplerChannelModel m : sm.getChannels()) {
72 for(int i = 0; i < chnIDs.length; i++) {
73 if(m.getChannelId() == chnIDs[i]) {
74 chnIDs[i] = -1;
75 found = true;
76 }
77 }
78
79 if(!found) sm.removeChannelById(m.getChannelId());
80 found = false;
81 }
82
83 Vector<SamplerChannel> v = new Vector<SamplerChannel>();
84 for(int id : chnIDs) {
85 if(id >= 0) v.add(CC.getClient().getSamplerChannelInfo(id));
86 }
87
88 for(int i = 0; i < v.size() - 1; i++) sm.addChannel(v.elementAt(i));
89
90 manageAutoUpdate(false);
91
92 if(v.size() > 0) sm.addChannel(v.elementAt(v.size() - 1));
93 else if(!CC.getSamplerModel().getChannelListIsAdjusting()) {
94 if(oldValue) sm.addChannel(null);
95 }
96 } catch(Exception x) {
97 setErrorMessage(getDescription() + ": " + HF.getErrorMessage(x));
98 CC.getLogger().log(Level.FINE, getErrorMessage(), x);
99 manageAutoUpdate(true);
100 }
101 }
102
103 private void
104 manageAutoUpdate(boolean force) {
105 if(!force) {
106 Task[] tasks = CC.getTaskQueue().getPendingTasks();
107 for(Task t : tasks) if(t.equals(this)) return;
108 }
109
110 javax.swing.SwingUtilities.invokeLater(new Runnable() {
111 public void
112 run() {
113 CC.getSamplerModel().setChannelListIsAdjusting(false);
114 CC.getMainFrame().setAutoUpdateChannelListUI(true);
115 CC.getMainFrame().updateChannelListUI();
116 }
117 });
118 }
119
120 /**
121 * Used to decrease the traffic. All task in the queue
122 * equal to this are removed if added using {@link org.jsampler.CC#scheduleTask}.
123 * @see org.jsampler.CC#addTask
124 */
125 public boolean
126 equals(Object obj) {
127 if(obj == null) return false;
128 if(!(obj instanceof UpdateChannels)) return false;
129
130 return true;
131 }
132 }

  ViewVC Help
Powered by ViewVC