/* * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.sound.midi.spi; import javax.sound.midi.MidiDevice;import javax.sound.midi.MidiUnavailableException; /** * A <code>MidiDeviceProvider</code> is a factory or provider for a particular * type of MIDI device. * This mechanism allows the implementation to determine * how resources are managed in the creation and management of * a device. * * @author Kara Kytle */public abstract class MidiDeviceProvider {      /**     * Indicates whether the device provider supports the device represented by     * the specified device info object.     * @param info an info object that describes the device for which support is queried     * @return <code>true</code> if the specified device is supported,     * otherwise <code>false</code>     */    public boolean isDeviceSupported(MidiDevice.Info info) {         MidiDevice.Info infos[] = getDeviceInfo();         for(int i=0; i<infos.length; i++) {            if( info.equals( infos[i] ) ) {                return true;            }        }        return false;    }      /**     * Obtains the set of info objects representing the device     * or devices provided by this <code>MidiDeviceProvider</code>.     * @return set of device info objects     */    public abstract MidiDevice.Info[] getDeviceInfo();      /**     * Obtains an instance of the device represented by the info object.     * @param info an info object that describes the desired device     * @return device instance     * @throws IllegalArgumentException if the info object specified does not     * match the info object for a device supported by this <code>MidiDeviceProvider</code>.     */    public abstract MidiDevice getDevice(MidiDevice.Info info);}