/* * 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.sampled.spi; import javax.sound.sampled.Mixer; /** * A provider or factory for a particular mixer type. * This mechanism allows the implementation to determine * how resources are managed in creation / management of * a mixer. * * @author Kara Kytle * @since 1.3 */public abstract class MixerProvider {      /**     * Indicates whether the mixer provider supports the mixer represented by     * the specified mixer info object.     * <p>     * The full set of mixer info objects that represent the mixers supported     * by this {@code MixerProvider} may be obtained     * through the {@code getMixerInfo} method.     *     * @param info an info object that describes the mixer for which support is queried     * @return {@code true} if the specified mixer is supported,     *     otherwise {@code false}     * @see #getMixerInfo()     */    public boolean isMixerSupported(Mixer.Info info) {         Mixer.Info infos[] = getMixerInfo();         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 mixer     * or mixers provided by this MixerProvider.     * <p>     * The {@code isMixerSupported} method returns {@code true}     * for all the info objects returned by this method.     * The corresponding mixer instances for the info objects     * are returned by the {@code getMixer} method.     *     * @return a set of mixer info objects     * @see #getMixer(javax.sound.sampled.Mixer.Info) getMixer(Mixer.Info)     * @see #isMixerSupported(javax.sound.sampled.Mixer.Info) isMixerSupported(Mixer.Info)     */    public abstract Mixer.Info[] getMixerInfo();      /**     * Obtains an instance of the mixer represented by the info object.     * <p>     * The full set of the mixer info objects that represent the mixers     * supported by this {@code MixerProvider} may be obtained     * through the {@code getMixerInfo} method.     * Use the {@code isMixerSupported} method to test whether     * this {@code MixerProvider} supports a particular mixer.     *     * @param info an info object that describes the desired mixer     * @return mixer instance     * @throws IllegalArgumentException if the info object specified does not     *     match the info object for a mixer supported by this MixerProvider.     * @see #getMixerInfo()     * @see #isMixerSupported(javax.sound.sampled.Mixer.Info) isMixerSupported(Mixer.Info)     */    public abstract Mixer getMixer(Mixer.Info info);}