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 DSSIInfo(String name, String vendor, String label, String copyright, String version, String soname, long index)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 dlopen_(String soname)87 static native long dlopen_(String soname); dlclose_(long sohandle)88 static native void dlclose_(long sohandle); getDSSIHandle_(long sohandle, long index)89 static native long getDSSIHandle_(long sohandle, long index); getDSSIName_(long handle)90 static native String getDSSIName_(long handle); getDSSICopyright_(long handle)91 static native String getDSSICopyright_(long handle); getDSSIVendor_(long handle)92 static native String getDSSIVendor_(long handle); getDSSILabel_(long handle)93 static native String getDSSILabel_(long handle); 94 examineLibrary(String soname)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++) examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath())141 ilist.addAll(examineLibrary(new File(dssidir, sofiles[i]).getAbsolutePath())); 142 infos = ilist.toArray(new DSSIInfo[ilist.size()]); 143 } 144 DSSIMidiDeviceProvider()145 public DSSIMidiDeviceProvider() 146 { 147 // Empty. 148 } 149 150 /* Return the Info array. 151 * @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo() 152 */ getDeviceInfo()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 */ getDevice(Info info)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 } 175