| /* |
| * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.media.sound; |
| |
| import javax.sound.sampled.Mixer; |
| import javax.sound.sampled.spi.MixerProvider; |
| |
| /** |
| * DirectAudioDevice provider. |
| * |
| * @author Florian Bomers |
| */ |
| public final class DirectAudioDeviceProvider extends MixerProvider { |
| |
| /** |
| * Set of info objects for all port input devices on the system. |
| */ |
| private static DirectAudioDeviceInfo[] infos; |
| |
| /** |
| * Set of all port input devices on the system. |
| */ |
| private static DirectAudioDevice[] devices; |
| |
| static { |
| // initialize |
| Platform.initialize(); |
| } |
| |
| /** |
| * Required public no-arg constructor. |
| */ |
| public DirectAudioDeviceProvider() { |
| synchronized (DirectAudioDeviceProvider.class) { |
| if (Platform.isDirectAudioEnabled()) { |
| init(); |
| } else { |
| infos = new DirectAudioDeviceInfo[0]; |
| devices = new DirectAudioDevice[0]; |
| } |
| } |
| } |
| |
| private static void init() { |
| // get the number of input devices |
| int numDevices = nGetNumDevices(); |
| |
| if (infos == null || infos.length != numDevices) { |
| if (Printer.trace) Printer.trace("DirectAudioDeviceProvider: init()"); |
| // initialize the arrays |
| infos = new DirectAudioDeviceInfo[numDevices]; |
| devices = new DirectAudioDevice[numDevices]; |
| |
| // fill in the info objects now. |
| for (int i = 0; i < infos.length; i++) { |
| infos[i] = nNewDirectAudioDeviceInfo(i); |
| } |
| if (Printer.trace) Printer.trace("DirectAudioDeviceProvider: init(): found numDevices: " + numDevices); |
| } |
| } |
| |
| @Override |
| public Mixer.Info[] getMixerInfo() { |
| synchronized (DirectAudioDeviceProvider.class) { |
| Mixer.Info[] localArray = new Mixer.Info[infos.length]; |
| System.arraycopy(infos, 0, localArray, 0, infos.length); |
| return localArray; |
| } |
| } |
| |
| @Override |
| public Mixer getMixer(Mixer.Info info) { |
| synchronized (DirectAudioDeviceProvider.class) { |
| // if the default device is asked, we provide the mixer |
| // with SourceDataLine's |
| if (info == null) { |
| for (int i = 0; i < infos.length; i++) { |
| Mixer mixer = getDevice(infos[i]); |
| if (mixer.getSourceLineInfo().length > 0) { |
| return mixer; |
| } |
| } |
| } |
| // otherwise get the first mixer that matches |
| // the requested info object |
| for (int i = 0; i < infos.length; i++) { |
| if (infos[i].equals(info)) { |
| return getDevice(infos[i]); |
| } |
| } |
| } |
| throw new IllegalArgumentException( |
| String.format("Mixer %s not supported by this provider", info)); |
| } |
| |
| private static Mixer getDevice(DirectAudioDeviceInfo info) { |
| int index = info.getIndex(); |
| if (devices[index] == null) { |
| devices[index] = new DirectAudioDevice(info); |
| } |
| return devices[index]; |
| } |
| |
| /** |
| * Info class for DirectAudioDevices. Adds an index value and a string for |
| * making native references to a particular device. |
| * This constructor is called from native. |
| */ |
| static final class DirectAudioDeviceInfo extends Mixer.Info { |
| private final int index; |
| private final int maxSimulLines; |
| |
| // For ALSA, the deviceID contains the encoded card index, device index, and sub-device-index |
| private final int deviceID; |
| |
| private DirectAudioDeviceInfo(int index, int deviceID, int maxSimulLines, |
| String name, String vendor, |
| String description, String version) { |
| super(name, vendor, "Direct Audio Device: "+description, version); |
| this.index = index; |
| this.maxSimulLines = maxSimulLines; |
| this.deviceID = deviceID; |
| } |
| |
| int getIndex() { |
| return index; |
| } |
| |
| int getMaxSimulLines() { |
| return maxSimulLines; |
| } |
| |
| int getDeviceID() { |
| return deviceID; |
| } |
| } // class DirectAudioDeviceInfo |
| |
| private static native int nGetNumDevices(); |
| // index: [0..nGetNumDevices()-1] |
| private static native DirectAudioDeviceInfo nNewDirectAudioDeviceInfo(int deviceIndex); |
| } |