Java example source code file (AppletAudioClip.java)

This example Java source code file (AppletAudioClip.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

appletaudioclip, audio, audioclip, bytearrayinputstream, debug, failed, inputstream, ioexception, javasoundaudioclip, net, network, sound, url

The AppletAudioClip.java Java example source code

/*
 * Copyright (c) 1995, 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 sun.applet;

import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayInputStream;
import java.net.URL;
import java.net.URLConnection;
import java.applet.AudioClip;

import com.sun.media.sound.JavaSoundAudioClip;


/**
 * Applet audio clip;
 *
 * @author Arthur van Hoff, Kara Kytle
 */

public class AppletAudioClip implements AudioClip {

    // url that this AudioClip is based on
    private URL url = null;

    // the audio clip implementation
    private AudioClip audioClip = null;

    boolean DEBUG = false /*true*/;

    /**
     * Constructs an AppletAudioClip from an URL.
     */
    public AppletAudioClip(URL url) {

        // store the url
        this.url = url;

        try {
            // create a stream from the url, and use it
            // in the clip.
            InputStream in = url.openStream();
            createAppletAudioClip(in);

        } catch (IOException e) {
                /* just quell it */
            if (DEBUG) {
                System.err.println("IOException creating AppletAudioClip" + e);
            }
        }
    }

    /**
     * Constructs an AppletAudioClip from a URLConnection.
     */
    public AppletAudioClip(URLConnection uc) {

        try {
            // create a stream from the url, and use it
            // in the clip.
            createAppletAudioClip(uc.getInputStream());

        } catch (IOException e) {
                /* just quell it */
            if (DEBUG) {
                System.err.println("IOException creating AppletAudioClip" + e);
            }
        }
    }


    /**
     * For constructing directly from Jar entries, or any other
     * raw Audio data. Note that the data provided must include the format
     * header.
     */
    public AppletAudioClip(byte [] data) {

        try {

            // construct a stream from the byte array
            InputStream in = new ByteArrayInputStream(data);

            createAppletAudioClip(in);

        } catch (IOException e) {
                /* just quell it */
            if (DEBUG) {
                System.err.println("IOException creating AppletAudioClip " + e);
            }
        }
    }


    /*
     * Does the real work of creating an AppletAudioClip from an InputStream.
     * This function is used by both constructors.
     */
    void createAppletAudioClip(InputStream in) throws IOException {

        try {
            audioClip = new JavaSoundAudioClip(in);
        } catch (Exception e3) {
            // no matter what happened, we throw an IOException to avoid changing the interfaces....
            throw new IOException("Failed to construct the AudioClip: " + e3);
        }
    }


    public synchronized void play() {

                if (audioClip != null)
                        audioClip.play();
    }


    public synchronized void loop() {

                if (audioClip != null)
                        audioClip.loop();
    }

    public synchronized void stop() {

                if (audioClip != null)
                        audioClip.stop();
    }
}