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1: /* DSSIMidiDeviceProvider.java -- DSSI Device Provider 2: Copyright (C) 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package gnu.javax.sound.midi.dssi; 40: 41: import java.util.ArrayList; 42: import java.util.List; 43: import java.io.File; 44: import java.io.FilenameFilter; 45: 46: import gnu.classpath.Configuration; 47: import gnu.javax.sound.midi.alsa.AlsaMidiSequencerDevice; 48: 49: import javax.sound.midi.MidiDevice; 50: import javax.sound.midi.MidiDevice.Info; 51: import javax.sound.midi.spi.MidiDeviceProvider; 52: 53: /** 54: * A DSSI MIDI device provider. 55: * 56: * DSSI (pronounced "dizzy") is an API for audio plugins, with particular 57: * application for software synthesis plugins with native user interfaces. 58: * 59: * Read about DSSI at http://dssi.sourceforge.net 60: * 61: * @author Anthony Green (green@redhat.com) 62: * 63: */ 64: public class DSSIMidiDeviceProvider extends MidiDeviceProvider 65: { 66: /** 67: * The MidiDevice.Info specialized for DSSI synthesizers. 68: * 69: * @author Anthony Green (green@redhat.com) 70: * 71: */ 72: private static class DSSIInfo extends Info 73: { 74: String soname; 75: long index; 76: 77: public DSSIInfo(String name, String vendor, String description, 78: String version, String soname, long index) 79: { 80: super(name, vendor, description, version); 81: this.soname = soname; 82: this.index = index; 83: } 84: } 85: 86: static native long dlopen_(String soname); 87: static native void dlclose_(long sohandle); 88: static native long getDSSIHandle_(long sohandle, long index); 89: static native String getDSSIName_(long handle); 90: static native String getDSSICopyright_(long handle); 91: static native String getDSSIVendor_(long handle); 92: static native String getDSSILabel_(long handle); 93: 94: private static List examineLibrary(String soname) 95: { 96: List list = new ArrayList(); 97: long index = 0; 98: long handle; 99: 100: long sohandle = dlopen_(soname); 101: if (sohandle == 0) 102: return list; 103: do 104: { 105: handle = getDSSIHandle_(sohandle, index); 106: if (handle == 0) 107: break; 108: String name = getDSSILabel_(handle); 109: String copyright = getDSSICopyright_(handle); 110: String label = getDSSIName_(handle); 111: String vendor = getDSSIVendor_(handle); 112: list.add(new DSSIInfo(name, vendor, label, 113: "DSSI-1", soname, index)); 114: index++; 115: } while (true); 116: 117: // Close the library and free memory 118: dlclose_(sohandle); 119: 120: return list; 121: } 122: 123: private static DSSIInfo[] infos; 124: 125: static 126: { 127: if (Configuration.INIT_LOAD_LIBRARY) 128: System.loadLibrary("gjsmdssi"); 129: 130: File dssidir = new File("/usr/lib/dssi/"); 131: String sofiles[] = dssidir.list(new FilenameFilter() 132: { 133: public boolean accept(File dir, String n) 134: { 135: return n.endsWith(".so"); 136: } 137: }); 138: List ilist = new ArrayList(); 139: for (int i = 0; i < sofiles.length; i++) 140: ilist.addAll(examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath())); 141: infos = (DSSIInfo[]) ilist.toArray(new DSSIInfo[ilist.size()]); 142: } 143: 144: public DSSIMidiDeviceProvider() 145: { 146: // Empty. 147: } 148: 149: /* Return the Info array. 150: * @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo() 151: */ 152: public Info[] getDeviceInfo() 153: { 154: return infos; 155: } 156: 157: /* Get a MIDI Device for info. 158: * @see javax.sound.midi.spi.MidiDeviceProvider#getDevice(javax.sound.midi.MidiDevice.Info) 159: */ 160: public MidiDevice getDevice(Info info) 161: { 162: for (int i = 0; i < infos.length; i++) 163: { 164: if (info.equals(infos[i])) 165: { 166: return new DSSISynthesizer(infos[i], 167: infos[i].soname, 168: infos[i].index); 169: } 170: } 171: throw new IllegalArgumentException("Don't recognize MIDI device " + info); 172: } 173: }