author | serb |
Thu, 18 Feb 2016 22:11:29 +0300 | |
changeset 36454 | d2853d1fc614 |
parent 34412 | bed825be8cd8 |
child 40444 | afabcfc2f3ef |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2002, 2015, 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( |
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String.format("Mixer %s not supported by this provider", info)); |
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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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} |