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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 javax.sound.midi.MidiDevice; 48: import javax.sound.midi.MidiDevice.Info; 49: import javax.sound.midi.spi.MidiDeviceProvider; 50: 51: /** 52: * A DSSI MIDI device provider. 53: * 54: * DSSI (pronounced "dizzy") is an API for audio plugins, with particular 55: * application for software synthesis plugins with native user interfaces. 56: * 57: * Read about DSSI at http://dssi.sourceforge.net 58: * 59: * @author Anthony Green (green@redhat.com) 60: * 61: */ 62: public class DSSIMidiDeviceProvider extends MidiDeviceProvider 63: { 64: /** 65: * The MidiDevice.Info specialized for DSSI synthesizers. 66: * 67: * @author Anthony Green (green@redhat.com) 68: * 69: */ 70: private static class DSSIInfo extends Info 71: { 72: String soname; 73: long index; 74: 75: public DSSIInfo(String name, String vendor, String description, 76: String version, String soname, long index) 77: { 78: super(name, vendor, description, version); 79: this.soname = soname; 80: this.index = index; 81: } 82: } 83: 84: static native long dlopen_(String soname); 85: static native void dlclose_(long sohandle); 86: static native long getDSSIHandle_(long sohandle, long index); 87: static native String getDSSIName_(long handle); 88: static native String getDSSICopyright_(long handle); 89: static native String getDSSIVendor_(long handle); 90: static native String getDSSILabel_(long handle); 91: 92: private static List examineLibrary(String soname) 93: { 94: List list = new ArrayList(); 95: long index = 0; 96: long handle; 97: 98: long sohandle = dlopen_(soname); 99: if (sohandle == 0) 100: return list; 101: do 102: { 103: handle = getDSSIHandle_(sohandle, index); 104: if (handle == 0) 105: break; 106: String name = getDSSILabel_(handle); 107: String copyright = getDSSICopyright_(handle); 108: String label = getDSSIName_(handle); 109: String vendor = getDSSIVendor_(handle); 110: list.add(new DSSIInfo(name, vendor, label, 111: "DSSI-1", soname, index)); 112: index++; 113: } while (true); 114: 115: // Close the library and free memory 116: dlclose_(sohandle); 117: 118: return list; 119: } 120: 121: private static DSSIInfo[] infos; 122: 123: static 124: { 125: if (Configuration.INIT_LOAD_LIBRARY) 126: System.loadLibrary("gjsmdssi"); 127: 128: File dssidir = new File("/usr/lib/dssi/"); 129: String sofiles[] = dssidir.list(new FilenameFilter() 130: { 131: public boolean accept(File dir, String n) 132: { 133: return n.endsWith(".so"); 134: } 135: }); 136: List ilist = new ArrayList(); 137: for (int i = 0; i < sofiles.length; i++) 138: ilist.addAll(examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath())); 139: infos = (DSSIInfo[]) ilist.toArray(new DSSIInfo[ilist.size()]); 140: } 141: 142: public DSSIMidiDeviceProvider() 143: { 144: // Empty. 145: } 146: 147: /* Return the Info array. 148: * @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo() 149: */ 150: public Info[] getDeviceInfo() 151: { 152: return infos; 153: } 154: 155: /* Get a MIDI Device for info. 156: * @see javax.sound.midi.spi.MidiDeviceProvider#getDevice(javax.sound.midi.MidiDevice.Info) 157: */ 158: public MidiDevice getDevice(Info info) 159: { 160: for (int i = 0; i < infos.length; i++) 161: { 162: if (info.equals(infos[i])) 163: { 164: return new DSSISynthesizer(infos[i], 165: infos[i].soname, 166: infos[i].index); 167: } 168: } 169: throw new IllegalArgumentException("Don't recognize MIDI device " + info); 170: } 171: }