/* * Copyright (c) 2007, 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 com.sun.media.sound; import java.util.Map;import javax.sound.midi.MidiUnavailableException;import javax.sound.midi.Synthesizer;import javax.sound.sampled.AudioFormat;import javax.sound.sampled.AudioInputStream;import javax.sound.sampled.SourceDataLine; /** * <code>AudioSynthesizer</code> is a <code>Synthesizer</code> * which renders it's output audio into <code>SourceDataLine</code> * or <code>AudioInputStream</code>. * * @see MidiSystem#getSynthesizer * @see Synthesizer * * @author Karl Helgason */public interface AudioSynthesizer extends Synthesizer {     /**     * Obtains the current format (encoding, sample rate, number of channels,     * etc.) of the synthesizer audio data.     *     * <p>If the synthesizer is not open and has never been opened, it returns     * the default format.     *     * @return current audio data format     * @see AudioFormat     */    public AudioFormat getFormat();     /**     * Gets information about the possible properties for the synthesizer.     *     * @param info a proposed list of tag/value pairs that will be sent on open.     * @return an array of <code>AudioSynthesizerPropertyInfo</code> objects     * describing possible properties. This array may be an empty array if     * no properties are required.     */    public AudioSynthesizerPropertyInfo[] getPropertyInfo(            Map<String, Object> info);     /**     * Opens the synthesizer and starts rendering audio into     * <code>SourceDataLine</code>.     *     * <p>An application opening a synthesizer explicitly with this call     * has to close the synthesizer by calling {@link #close}. This is     * necessary to release system resources and allow applications to     * exit cleanly.     *     * <p>Note that some synthesizers, once closed, cannot be reopened.     * Attempts to reopen such a synthesizer will always result in     * a <code>MidiUnavailableException</code>.     *     * @param line which <code>AudioSynthesizer</code> writes output audio into.     * If <code>line</code> is null, then line from system default mixer is used.     * @param info a <code>Map<String,Object></code> object containing     * properties for additional configuration supported by synthesizer.     * If <code>info</code> is null then default settings are used.     *     * @throws MidiUnavailableException thrown if the synthesizer cannot be     * opened due to resource restrictions.     * @throws SecurityException thrown if the synthesizer cannot be     * opened due to security restrictions.     *     * @see #close     * @see #isOpen     */    public void open(SourceDataLine line, Map<String, Object> info)            throws MidiUnavailableException;     /**     * Opens the synthesizer and renders audio into returned     * <code>AudioInputStream</code>.     *     * <p>An application opening a synthesizer explicitly with this call     * has to close the synthesizer by calling {@link #close}. This is     * necessary to release system resources and allow applications to     * exit cleanly.     *     * <p>Note that some synthesizers, once closed, cannot be reopened.     * Attempts to reopen such a synthesizer will always result in     * a <code>MidiUnavailableException<code>.     *     * @param targetFormat specifies the <code>AudioFormat</code>     * used in returned <code>AudioInputStream</code>.     * @param info a <code>Map<String,Object></code> object containing     * properties for additional configuration supported by synthesizer.     * If <code>info</code> is null then default settings are used.     *     * @throws MidiUnavailableException thrown if the synthesizer cannot be     * opened due to resource restrictions.     * @throws SecurityException thrown if the synthesizer cannot be     * opened due to security restrictions.     *     * @see #close     * @see #isOpen     */    public AudioInputStream openStream(AudioFormat targetFormat,            Map<String, Object> info) throws MidiUnavailableException;}