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1: /* DSSIMidiDeviceProvider.java -- DSSI Device Provider 2: Copyright (C) 2005, 2012 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 copyright; 73: String soname; 74: long index; 75: 76: public DSSIInfo(String name, String vendor, String label, 77: String copyright, String version, 78: String soname, long index) 79: { 80: super(name, vendor, label, version); 81: this.copyright = copyright; 82: this.soname = soname; 83: this.index = index; 84: } 85: } 86: 87: static native long dlopen_(String soname); 88: static native void dlclose_(long sohandle); 89: static native long getDSSIHandle_(long sohandle, long index); 90: static native String getDSSIName_(long handle); 91: static native String getDSSICopyright_(long handle); 92: static native String getDSSIVendor_(long handle); 93: static native String getDSSILabel_(long handle); 94: 95: private static List<DSSIInfo> examineLibrary(String soname) 96: { 97: List<DSSIInfo> list = new ArrayList<DSSIInfo>(); 98: long index = 0; 99: long handle; 100: 101: long sohandle = dlopen_(soname); 102: if (sohandle == 0) 103: return list; 104: do 105: { 106: handle = getDSSIHandle_(sohandle, index); 107: if (handle == 0) 108: break; 109: String name = getDSSILabel_(handle); 110: String copyright = getDSSICopyright_(handle); 111: String label = getDSSIName_(handle); 112: String vendor = getDSSIVendor_(handle); 113: list.add(new DSSIInfo(name, vendor, label, copyright, 114: "DSSI-1", soname, index)); 115: index++; 116: } while (true); 117: 118: // Close the library and free memory 119: dlclose_(sohandle); 120: 121: return list; 122: } 123: 124: private static DSSIInfo[] infos; 125: 126: static 127: { 128: if (Configuration.INIT_LOAD_LIBRARY) 129: System.loadLibrary("gjsmdssi"); 130: 131: File dssidir = new File("/usr/lib/dssi/"); 132: String sofiles[] = dssidir.list(new FilenameFilter() 133: { 134: public boolean accept(File dir, String n) 135: { 136: return n.endsWith(".so"); 137: } 138: }); 139: List<DSSIInfo> ilist = new ArrayList<DSSIInfo>(); 140: for (int i = 0; i < sofiles.length; i++) 141: ilist.addAll(examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath())); 142: infos = ilist.toArray(new DSSIInfo[ilist.size()]); 143: } 144: 145: public DSSIMidiDeviceProvider() 146: { 147: // Empty. 148: } 149: 150: /* Return the Info array. 151: * @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo() 152: */ 153: public Info[] getDeviceInfo() 154: { 155: return infos; 156: } 157: 158: /* Get a MIDI Device for info. 159: * @see javax.sound.midi.spi.MidiDeviceProvider#getDevice(javax.sound.midi.MidiDevice.Info) 160: */ 161: public MidiDevice getDevice(Info info) 162: { 163: for (int i = 0; i < infos.length; i++) 164: { 165: if (info.equals(infos[i])) 166: { 167: return new DSSISynthesizer(infos[i], 168: infos[i].soname, 169: infos[i].index); 170: } 171: } 172: throw new IllegalArgumentException("Don't recognize MIDI device " + info); 173: } 174: }