152 lines
4.5 KiB
Java
152 lines
4.5 KiB
Java
/*
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* Copyright (c) 2002, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package com.sun.media.sound;
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import javax.sound.sampled.Mixer;
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import javax.sound.sampled.spi.MixerProvider;
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/**
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* Port provider.
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*
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* @author Florian Bomers
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*/
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public final class PortMixerProvider extends MixerProvider {
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// STATIC VARIABLES
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/**
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* Set of info objects for all port input devices on the system.
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*/
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private static PortMixerInfo[] infos;
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/**
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* Set of all port input devices on the system.
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*/
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private static PortMixer[] devices;
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// STATIC
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static {
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// initialize
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Platform.initialize();
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}
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// CONSTRUCTOR
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/**
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* Required public no-arg constructor.
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*/
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public PortMixerProvider() {
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synchronized (PortMixerProvider.class) {
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if (Platform.isPortsEnabled()) {
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init();
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} else {
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infos = new PortMixerInfo[0];
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devices = new PortMixer[0];
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}
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}
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}
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private static void init() {
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// get the number of input devices
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int numDevices = nGetNumDevices();
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if (infos == null || infos.length != numDevices) {
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if (Printer.trace) Printer.trace("PortMixerProvider: init()");
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// initialize the arrays
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infos = new PortMixerInfo[numDevices];
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devices = new PortMixer[numDevices];
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// fill in the info objects now.
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// we'll fill in the device objects as they're requested.
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for (int i = 0; i < infos.length; i++) {
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infos[i] = nNewPortMixerInfo(i);
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}
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if (Printer.trace) Printer.trace("PortMixerProvider: init(): found numDevices: " + numDevices);
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}
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}
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public Mixer.Info[] getMixerInfo() {
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synchronized (PortMixerProvider.class) {
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Mixer.Info[] localArray = new Mixer.Info[infos.length];
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System.arraycopy(infos, 0, localArray, 0, infos.length);
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return localArray;
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}
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}
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public Mixer getMixer(Mixer.Info info) {
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synchronized (PortMixerProvider.class) {
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for (int i = 0; i < infos.length; i++) {
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if (infos[i].equals(info)) {
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return getDevice(infos[i]);
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}
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}
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}
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throw new IllegalArgumentException("Mixer " + info.toString()
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+ " not supported by this provider.");
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}
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private static Mixer getDevice(PortMixerInfo info) {
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int index = info.getIndex();
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if (devices[index] == null) {
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devices[index] = new PortMixer(info);
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}
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return devices[index];
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}
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// INNER CLASSES
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/**
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* Info class for PortMixers. Adds an index value for
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* making native references to a particular device.
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* This constructor is called from native.
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*/
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static final class PortMixerInfo extends Mixer.Info {
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private final int index;
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private PortMixerInfo(int index, String name, String vendor, String description, String version) {
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super("Port " + name, vendor, description, version);
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this.index = index;
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}
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int getIndex() {
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return index;
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}
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} // class PortMixerInfo
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// NATIVE METHODS
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private static native int nGetNumDevices();
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private static native PortMixerInfo nNewPortMixerInfo(int mixerIndex);
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}
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