author | serb |
Thu, 18 Feb 2016 22:11:29 +0300 | |
changeset 36454 | d2853d1fc614 |
parent 25859 | 3317bb8137f4 |
child 38981 | 9521cb19e297 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 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 java.util.Map; |
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import java.util.Vector; |
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import java.util.WeakHashMap; |
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import javax.sound.sampled.AudioSystem; |
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import javax.sound.sampled.Control; |
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import javax.sound.sampled.Line; |
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import javax.sound.sampled.LineEvent; |
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import javax.sound.sampled.LineListener; |
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import javax.sound.sampled.LineUnavailableException; |
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/** |
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* AbstractLine |
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* |
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* @author Kara Kytle |
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*/ |
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abstract class AbstractLine implements Line { |
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protected final Line.Info info; |
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protected Control[] controls; |
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AbstractMixer mixer; |
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private boolean open = false; |
24548
9c007a986347
8042256: Fix raw and unchecked lint warnings in com.sun.media.sound
darcy
parents:
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diff
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private final Vector<Object> listeners = new Vector<>(); |
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/** |
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* Contains event dispatcher per thread group. |
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*/ |
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private static final Map<ThreadGroup, EventDispatcher> dispatchers = |
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new WeakHashMap<>(); |
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/** |
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* Constructs a new AbstractLine. |
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* @param mixer the mixer with which this line is associated |
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* @param controls set of supported controls |
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*/ |
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protected AbstractLine(Line.Info info, AbstractMixer mixer, Control[] controls) { |
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if (controls == null) { |
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controls = new Control[0]; |
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} |
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this.info = info; |
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this.mixer = mixer; |
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this.controls = controls; |
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} |
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// LINE METHODS |
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public final Line.Info getLineInfo() { |
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return info; |
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} |
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public final boolean isOpen() { |
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return open; |
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} |
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public final void addLineListener(LineListener listener) { |
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synchronized(listeners) { |
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if ( ! (listeners.contains(listener)) ) { |
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listeners.addElement(listener); |
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} |
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} |
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} |
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/** |
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* Removes an audio listener. |
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* @param listener listener to remove |
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*/ |
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public final void removeLineListener(LineListener listener) { |
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listeners.removeElement(listener); |
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} |
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/** |
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* Obtains the set of controls supported by the |
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* line. If no controls are supported, returns an |
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* array of length 0. |
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* @return control set |
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*/ |
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public final Control[] getControls() { |
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Control[] returnedArray = new Control[controls.length]; |
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for (int i = 0; i < controls.length; i++) { |
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returnedArray[i] = controls[i]; |
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} |
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return returnedArray; |
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} |
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public final boolean isControlSupported(Control.Type controlType) { |
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// protect against a NullPointerException |
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if (controlType == null) { |
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return false; |
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} |
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for (int i = 0; i < controls.length; i++) { |
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if (controlType == controls[i].getType()) { |
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return true; |
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} |
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} |
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return false; |
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} |
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public final Control getControl(Control.Type controlType) { |
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// protect against a NullPointerException |
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if (controlType != null) { |
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for (int i = 0; i < controls.length; i++) { |
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if (controlType == controls[i].getType()) { |
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return controls[i]; |
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} |
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} |
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} |
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throw new IllegalArgumentException("Unsupported control type: " + controlType); |
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} |
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// HELPER METHODS |
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/** |
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* This method sets the open state and generates |
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* events if it changes. |
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*/ |
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final void setOpen(boolean open) { |
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if (Printer.trace) Printer.trace("> "+getClass().getName()+" (AbstractLine): setOpen(" + open + ") this.open: " + this.open); |
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boolean sendEvents = false; |
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long position = getLongFramePosition(); |
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synchronized (this) { |
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if (this.open != open) { |
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this.open = open; |
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sendEvents = true; |
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} |
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} |
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if (sendEvents) { |
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if (open) { |
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sendEvents(new LineEvent(this, LineEvent.Type.OPEN, position)); |
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} else { |
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sendEvents(new LineEvent(this, LineEvent.Type.CLOSE, position)); |
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} |
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} |
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if (Printer.trace) Printer.trace("< "+getClass().getName()+" (AbstractLine): setOpen(" + open + ") this.open: " + this.open); |
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} |
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/** |
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* Send line events. |
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*/ |
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final void sendEvents(LineEvent event) { |
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getEventDispatcher().sendAudioEvents(event, listeners); |
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} |
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/** |
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* This is an error in the API: getFramePosition |
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* should return a long value. At CD quality, |
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* the int value wraps around after 13 hours. |
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*/ |
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public final int getFramePosition() { |
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return (int) getLongFramePosition(); |
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} |
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/** |
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* Return the frame position in a long value |
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* This implementation returns AudioSystem.NOT_SPECIFIED. |
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*/ |
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public long getLongFramePosition() { |
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return AudioSystem.NOT_SPECIFIED; |
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} |
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// $$kk: 06.03.99: returns the mixer used in construction. |
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// this is a hold-over from when there was a public method like |
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// this on line and should be fixed!! |
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final AbstractMixer getMixer() { |
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return mixer; |
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} |
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final EventDispatcher getEventDispatcher() { |
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// create and start the global event thread |
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//TODO need a way to stop this thread when the engine is done |
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final ThreadGroup tg = Thread.currentThread().getThreadGroup(); |
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synchronized (dispatchers) { |
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EventDispatcher eventDispatcher = dispatchers.get(tg); |
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if (eventDispatcher == null) { |
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eventDispatcher = new EventDispatcher(); |
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dispatchers.put(tg, eventDispatcher); |
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eventDispatcher.start(); |
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} |
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return eventDispatcher; |
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} |
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} |
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// ABSTRACT METHODS |
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public abstract void open() throws LineUnavailableException; |
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public abstract void close(); |
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} |