1 /* 2 * Copyright (c) 2008, 2013, 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 javax.sound.sampled.Mixer; 28 import javax.sound.sampled.Mixer.Info; 29 import javax.sound.sampled.spi.MixerProvider; 30 31 /** 32 * Provider for software audio mixer 33 * 34 * @author Karl Helgason 35 */ 36 public final class SoftMixingMixerProvider extends MixerProvider { 37 38 static SoftMixingMixer globalmixer = null; 39 40 static Thread lockthread = null; 41 42 static final Object mutex = new Object(); 43 44 public Mixer getMixer(Info info) { 45 if (!(info == null || info == SoftMixingMixer.info)) { 46 throw new IllegalArgumentException("Mixer " + info.toString() 47 + " not supported by this provider."); 48 } 49 synchronized (mutex) { 50 if (lockthread != null) 51 if (Thread.currentThread() == lockthread) 52 throw new IllegalArgumentException("Mixer " 53 + info.toString() 54 + " not supported by this provider."); 55 if (globalmixer == null) 56 globalmixer = new SoftMixingMixer(); 57 return globalmixer; 58 } 59 60 } 61 62 public Info[] getMixerInfo() { 63 return new Info[] { SoftMixingMixer.info }; 64 } 65 66 }