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jeremybenn |
/* MidiDeviceProvider.java -- Abstract parent for a MIDI device provider.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.sound.midi.spi;
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import javax.sound.midi.*;
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/**
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* The abstract base class for all MidiDeviceProvider types.
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*
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* @author Anthony Green (green@redhat.com)
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* @since 1.3
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*
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*/
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public abstract class MidiDeviceProvider
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{
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/**
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* Returns true if this provider supports a specific MIDI device.
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*
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* @param info the MIDI device descriptor
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* @return true if this provider supports info
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*/
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public boolean isDeviceSupported(MidiDevice.Info info)
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{
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MidiDevice.Info infos[] = getDeviceInfo();
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int i = infos.length;
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while (i > 0)
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{
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if (info.equals(infos[--i]))
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return true;
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}
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return false;
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}
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/**
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* Get the list descriptors for all MIDI devices supported by
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* this provider.
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*
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* @return an array of descriptors for all supported MIDI devices.
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*/
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public abstract MidiDevice.Info[] getDeviceInfo();
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/**
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* Get the MidiDevice for the MIDI device described by info
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*
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* @param info the descriptor for the MIDI device we want
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* @return the MidiDevice we're looking for
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* @throws IllegalArgumentException is this provider doesn't support info
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*/
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public abstract MidiDevice getDevice(MidiDevice.Info info)
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throws IllegalArgumentException;
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}
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