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jlechner |
/* DSSIMidiDeviceProvider.java -- DSSI Device Provider
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.sound.midi.dssi;
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import java.util.ArrayList;
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import java.util.List;
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import java.io.File;
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import java.io.FilenameFilter;
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import gnu.classpath.Configuration;
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import gnu.javax.sound.midi.alsa.AlsaMidiSequencerDevice;
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import javax.sound.midi.MidiDevice;
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import javax.sound.midi.MidiDevice.Info;
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import javax.sound.midi.spi.MidiDeviceProvider;
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/**
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* A DSSI MIDI device provider.
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*
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* DSSI (pronounced "dizzy") is an API for audio plugins, with particular
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* application for software synthesis plugins with native user interfaces.
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*
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* Read about DSSI at http://dssi.sourceforge.net
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*
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* @author Anthony Green (green@redhat.com)
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*
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*/
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public class DSSIMidiDeviceProvider extends MidiDeviceProvider
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{
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/**
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* The MidiDevice.Info specialized for DSSI synthesizers.
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*
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* @author Anthony Green (green@redhat.com)
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*
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*/
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private static class DSSIInfo extends Info
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{
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String soname;
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long index;
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public DSSIInfo(String name, String vendor, String description,
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String version, String soname, long index)
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{
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super(name, vendor, description, version);
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this.soname = soname;
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this.index = index;
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}
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}
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static native long dlopen_(String soname);
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static native void dlclose_(long sohandle);
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static native long getDSSIHandle_(long sohandle, long index);
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static native String getDSSIName_(long handle);
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static native String getDSSICopyright_(long handle);
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static native String getDSSIVendor_(long handle);
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static native String getDSSILabel_(long handle);
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private static List examineLibrary(String soname)
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{
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List list = new ArrayList();
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long index = 0;
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long handle;
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long sohandle = dlopen_(soname);
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if (sohandle == 0)
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return list;
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do
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{
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handle = getDSSIHandle_(sohandle, index);
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if (handle == 0)
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break;
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String name = getDSSILabel_(handle);
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String copyright = getDSSICopyright_(handle);
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String label = getDSSIName_(handle);
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String vendor = getDSSIVendor_(handle);
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list.add(new DSSIInfo(name, vendor, label,
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"DSSI-1", soname, index));
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index++;
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} while (true);
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// Close the library and free memory
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dlclose_(sohandle);
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return list;
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}
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private static DSSIInfo[] infos;
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static
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{
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if (Configuration.INIT_LOAD_LIBRARY)
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System.loadLibrary("gjsmdssi");
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File dssidir = new File("/usr/lib/dssi/");
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String sofiles[] = dssidir.list(new FilenameFilter()
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{
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public boolean accept(File dir, String n)
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{
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return n.endsWith(".so");
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}
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});
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List ilist = new ArrayList();
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for (int i = 0; i < sofiles.length; i++)
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ilist.addAll(examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath()));
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infos = (DSSIInfo[]) ilist.toArray(new DSSIInfo[ilist.size()]);
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}
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public DSSIMidiDeviceProvider()
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{
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// Empty.
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}
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/* Return the Info array.
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* @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo()
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*/
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public Info[] getDeviceInfo()
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{
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return infos;
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}
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/* Get a MIDI Device for info.
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* @see javax.sound.midi.spi.MidiDeviceProvider#getDevice(javax.sound.midi.MidiDevice.Info)
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*/
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public MidiDevice getDevice(Info info)
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{
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for (int i = 0; i < infos.length; i++)
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{
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if (info.equals(infos[i]))
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{
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return new DSSISynthesizer(infos[i],
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infos[i].soname,
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infos[i].index);
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}
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}
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throw new IllegalArgumentException("Don't recognize MIDI device " + info);
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}
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}
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