1 /* 2 * Copyright (c) 2007, 2015, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package com.sun.media.sound; 26 27 import java.io.IOException; 28 29 import javax.sound.sampled.AudioInputStream; 30 import javax.sound.sampled.SourceDataLine; 31 32 /** 33 * This is a processor object that writes into SourceDataLine 34 * 35 * @author Karl Helgason 36 */ 37 public final class SoftAudioPusher implements Runnable { 38 39 private volatile boolean active = false; 40 private SourceDataLine sourceDataLine = null; 41 private Thread audiothread; 42 private final AudioInputStream ais; 43 private final byte[] buffer; 44 45 public SoftAudioPusher(SourceDataLine sourceDataLine, AudioInputStream ais, 46 int workbuffersizer) { 47 this.ais = ais; 48 this.buffer = new byte[workbuffersizer]; 49 this.sourceDataLine = sourceDataLine; 50 } 51 52 public synchronized void start() { 53 if (active) 54 return; 55 active = true; 56 audiothread = new Thread(null, this, "AudioPusher", 0, false); 57 audiothread.setDaemon(true); 58 audiothread.setPriority(Thread.MAX_PRIORITY); 59 audiothread.start(); 60 } 61 62 public synchronized void stop() { 63 if (!active) 64 return; 65 active = false; 66 try { 67 audiothread.join(); 68 } catch (InterruptedException e) { 69 //e.printStackTrace(); 70 } 71 } 72 73 public void run() { 74 byte[] buffer = SoftAudioPusher.this.buffer; 75 AudioInputStream ais = SoftAudioPusher.this.ais; 76 SourceDataLine sourceDataLine = SoftAudioPusher.this.sourceDataLine; 77 78 try { 79 while (active) { 80 // Read from audio source 81 int count = ais.read(buffer); 82 if(count < 0) break; 83 // Write byte buffer to source output 84 sourceDataLine.write(buffer, 0, count); 85 } 86 } catch (IOException e) { 87 active = false; 88 //e.printStackTrace(); 89 } 90 91 } 92 }