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Diffstat (limited to 'libjava/classpath/gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider.java | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider.java b/libjava/classpath/gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider.java new file mode 100644 index 000000000..33181b6d5 --- /dev/null +++ b/libjava/classpath/gnu/javax/sound/midi/alsa/AlsaMidiDeviceProvider.java @@ -0,0 +1,216 @@ +/* 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); + } +} |