001/* Mixer API 002 Copyright (C) 2005 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.sound.sampled.spi; 040 041import javax.sound.sampled.Mixer; 042 043/** 044 * This abstract class defines an interface to mixer providers. 045 * Concrete subclasses will implement the methods in this class. 046 * @since 1.3 047 */ 048public abstract class MixerProvider 049{ 050 /** 051 * Create a new mixer provider. 052 */ 053 public MixerProvider() 054 { 055 } 056 057 /** 058 * Return a mixer that matches the given info object. 059 * @param info description of the mixer to match 060 * @return the mixer 061 * @throws IllegalArgumentException if no mixer matches the description 062 */ 063 public abstract Mixer getMixer(Mixer.Info info); 064 065 /** 066 * Return an array of info objects describing all the mixers provided by 067 * this provider. 068 */ 069 public abstract Mixer.Info[] getMixerInfo(); 070 071 /** 072 * Return true if a mixer matching the provided description is supported. 073 * @param info description of the mixer to match 074 * @return true if it is supported by this provider 075 */ 076 public boolean isMixerSupported(Mixer.Info info) 077 { 078 Mixer.Info[] infos = getMixerInfo(); 079 for (int i = 0; i < infos.length; ++i) 080 { 081 if (info.equals(infos[i])) 082 return true; 083 } 084 return false; 085 } 086}