| /* AlsaMidiDeviceProvider.java -- The ALSA MIDI Device Provider |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.javax.sound.midi.alsa; |
| |
| import gnu.classpath.Configuration; |
| |
| import javax.sound.midi.MidiDevice; |
| import javax.sound.midi.MidiDevice.Info; |
| import javax.sound.midi.spi.MidiDeviceProvider; |
| |
| /** |
| * Provide ALSA MIDI devices. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| public class AlsaMidiDeviceProvider extends MidiDeviceProvider |
| { |
| /** |
| * Abstract base for ALSA specific MIDI device info. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| private static abstract class AlsaInfo extends Info |
| { |
| /** |
| * Create an ALSA specific MIDI device info object. |
| * |
| * @param name the device name |
| * @param description the device description |
| */ |
| public AlsaInfo(String name, String description) |
| { |
| super(name, "Alsa", description, "0.0"); |
| } |
| |
| abstract MidiDevice getDevice (); |
| } |
| |
| /** |
| * ALSA MIDI Port. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| public static abstract class AlsaPortInfo extends AlsaInfo |
| { |
| long client; |
| long port; |
| |
| /** |
| * Create ALSA MIDI In Port. |
| * |
| * @param name the device name |
| * @param description the device description |
| * @param client the client ID |
| * @param port the port ID |
| */ |
| public AlsaPortInfo(String name, String description, long client, long port) |
| { |
| super(name, description); |
| this.client = client; |
| this.port = port; |
| } |
| } |
| |
| /** |
| * ALSA Sequencer specific info. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| private static class AlsaSequencerInfo extends AlsaInfo |
| { |
| public AlsaSequencerInfo(String name, String description) |
| { |
| super(name, description); |
| } |
| |
| MidiDevice getDevice() |
| { |
| return AlsaMidiSequencerDevice.getInstance(); |
| } |
| } |
| |
| /** |
| * ALSA MIDI In Port. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| private static class AlsaInputPortInfo extends AlsaPortInfo |
| { |
| public AlsaInputPortInfo(String name, String description, long client, long port) |
| { |
| super(name, description, client, port); |
| } |
| |
| MidiDevice getDevice() |
| { |
| return new AlsaInputPortDevice(this); |
| } |
| } |
| |
| /** |
| * ALSA MIDI Out Port. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * |
| */ |
| private static class AlsaOutputPortInfo extends AlsaPortInfo |
| { |
| public AlsaOutputPortInfo(String name, String description, long client, long port) |
| { |
| super(name, description, client, port); |
| } |
| |
| MidiDevice getDevice() |
| { |
| return new AlsaOutputPortDevice(this); |
| } |
| } |
| |
| private static AlsaInfo[] infos; |
| |
| private static native AlsaInfo[] getInputDeviceInfo_(); |
| private static native AlsaInfo[] getOutputDeviceInfo_(); |
| |
| /** |
| * Initialize the ALSA system |
| */ |
| private static native void init_(); |
| |
| static |
| { |
| if (Configuration.INIT_LOAD_LIBRARY) |
| { |
| System.loadLibrary("gjsmalsa"); |
| } |
| |
| init_(); |
| |
| AlsaInfo inputs[] = getInputDeviceInfo_(); |
| AlsaInfo outputs[] = getOutputDeviceInfo_(); |
| |
| infos = new AlsaInfo[inputs.length + outputs.length + 1]; |
| infos[0] = new AlsaSequencerInfo ("/dev/snd/seq", "ALSA Sequencer"); |
| System.arraycopy(inputs, 0, infos, 1, inputs.length); |
| System.arraycopy(outputs, 0, infos, 1 + inputs.length, outputs.length); |
| } |
| |
| public AlsaMidiDeviceProvider() |
| { |
| // Nothing. |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.sound.midi.spi.MidiDeviceProvider#getDeviceInfo() |
| */ |
| public Info[] getDeviceInfo() |
| { |
| return infos; |
| } |
| |
| /* (non-Javadoc) |
| * @see javax.sound.midi.spi.MidiDeviceProvider#getDevice(javax.sound.midi.MidiDevice.Info) |
| */ |
| public MidiDevice getDevice(Info info) |
| { |
| for (int i = 0; i < infos.length; i++) |
| { |
| if (info.equals(infos[i])) |
| { |
| return infos[i].getDevice(); |
| } |
| } |
| throw new IllegalArgumentException("Don't recognize MIDI device " + info); |
| } |
| } |