Mercurial > hg > pulseaudio
view src/java/org/classpath/icedtea/pulseaudio/EventLoop.java @ 171:4260a476a101
2008-10-08 Ioana Ivan <iivan@redhat.com>
* src/java/org/classpath/icedtea/pulseaudio/PulseAudioDataLine.java
(addStreamListener): startedListener always fires a START event
strtedListener notifies drain that there is data
on the line
(stop): sets writeInterrupted to true
(start): doesn't send any events
(getBytesInBuffer): new function, returns the number of bytes
currently present in a stream's buffer
* src/java/org/classpath/icedtea/pulseaudio/PulseAudioSourceDataLine.java:
(write): -checks writeInterrupted instead of drain and flush
-if stop() was called before write() it writes data to the
buffer until the buffer fills, then blocks
-moved some code from the synchronized(this) block, since it
was causing one test to hang
(close): sets writeInterrupted to true
(drain): sets writeInterrupted to true
if the line is stopped and there is no data on the line,
returns immediately, if there is data, blocks until the line
is started
* src/java/org/classpath/icedtea/pulseaudio/Stream.java
(native_pa_stream_updateTimingInfo): new function
( bytesInBuffer): new function
* src/native/org_classpath_icedtea_pulseaudio_Stream.c
(JNICALL Java_org_classpath_icedtea_pulseaudio_Stream_bytesInBuffer):
new function
(Java_org_classpath_icedtea_pulseaudio_Stream_native_1pa_1stream_1updateTimingInfo):
new function
(update_timing_info_callback): new function
(Java_org_classpath_icedtea_pulseaudio_Stream_native_1pa_1stream_1writable_1size):
return 0 if the stream has been closed
author | Ioana Ivan <iivan@redhat.com> |
---|---|
date | Wed, 08 Oct 2008 14:27:39 -0400 |
parents | eb2d35a91b0d |
children | 5108fc37a890 |
line wrap: on
line source
/* EventLoop.java Copyright (C) 2008 Red Hat, Inc. This file is part of IcedTea. IcedTea is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2. IcedTea 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 for more details. You should have received a copy of the GNU General Public License along with IcedTea; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ package org.classpath.icedtea.pulseaudio; import java.io.IOException; import java.util.ArrayList; import java.util.List; import java.util.concurrent.Semaphore; import org.classpath.icedtea.pulseaudio.ContextEvent.Type; /* * any methods that can obstruct the behaviour of pa_mainloop should run * synchronized * * */ public class EventLoop implements Runnable { /* * the threadLock object is the object used for synchronizing the * non-thread-safe operations of pulseaudio's c api * */ public Object threadLock = new Object(); private static EventLoop instance = null; private List<ContextListener> contextListeners; // private List<SourceDataLine> lines; private String name; private String serverString; private int status; // private boolean eventLoopIsRunning = false; public Semaphore finished = new Semaphore(0); private List<String> targetPortNameList = new ArrayList<String>(); private List<String> sourcePortNameList = new ArrayList<String>(); /* * JNI stuff * * Do not synchronize the individual functions, synchronize * block/method/lines around the call * */ private native void native_setup(String appName, String server); private native int native_iterate(int timeout); private native void native_shutdown(); private native void native_set_sink_volume(byte[] streamPointer, int volume); /* * These fields hold pointers * * */ @SuppressWarnings("unused") private byte[] contextPointer; @SuppressWarnings("unused") private byte[] mainloopPointer; /* * */ static { System.loadLibrary("pulse-java"); } private EventLoop() { contextListeners = new ArrayList<ContextListener>(); } synchronized public static EventLoop getEventLoop() { if (instance == null) { instance = new EventLoop(); } return instance; } public void setAppName(String name) { this.name = name; } public void setServer(String serverString) { this.serverString = serverString; } @Override public void run() { native_setup(this.name, this.serverString); /* * Perhaps this loop should be written in C doing a Java to C call on * every iteration of the loop might be slow */ while (true) { synchronized (threadLock) { // timeout is in milliseconds // timout = 0 means dont block native_iterate(100); if (Thread.interrupted()) { native_shutdown(); // System.out.println(this.getClass().getName() // + ": shutting down"); // clean up the listeners synchronized (contextListeners) { contextListeners.clear(); } return; } } } } public void addContextListener(ContextListener contextListener) { synchronized (contextListeners) { contextListeners.add(contextListener); } } public void removeContextListener(ContextListener contextListener) { synchronized (contextListeners) { contextListeners.remove(contextListener); } } public int getStatus() { return this.status; } public void update(int status) { synchronized (threadLock) { // System.out.println(this.getClass().getName() // + ".update() called! status = " + status); this.status = status; switch (status) { case 0: fireEvent(new ContextEvent(Type.UNCONNECTED)); break; case 1: fireEvent(new ContextEvent(Type.CONNECTING)); break; case 2: break; case 3: break; case 4: fireEvent(new ContextEvent(Type.READY)); break; case 5: fireEvent(new ContextEvent(Type.FAILED)); System.out.println("context failed"); break; case 6: fireEvent(new ContextEvent(Type.TERMINATED)); break; default: } } } private void fireEvent(final ContextEvent e) { // System.out.println(this.getClass().getName() + "firing event: " // + e.getType().toString()); synchronized (contextListeners) { // System.out.println(contextListeners.size()); for (ContextListener listener : contextListeners) { listener.update(e); } } } public void setVolume(byte[] streamPointer, int volume) { synchronized (threadLock) { native_set_sink_volume(streamPointer, volume); } } public byte[] getContextPointer() { return contextPointer; } public byte[] getMainLoopPointer() { return mainloopPointer; } private native byte[] nativeUpdateTargetPortNameList(); private native byte[] nativeUpdateSourcePortNameList(); protected synchronized List<String> updateTargetPortNameList() { targetPortNameList = new ArrayList<String>(); Operation op; synchronized (this.threadLock) { op = new Operation(nativeUpdateTargetPortNameList()); } op.waitForCompletion(); assert (op.getState() == Operation.State.Done); op.releaseReference(); return targetPortNameList; } protected synchronized List<String> updateSourcePortNameList() { sourcePortNameList = new ArrayList<String>(); Operation op; synchronized (this.threadLock) { op = new Operation(nativeUpdateSourcePortNameList()); } op.waitForCompletion(); assert (op.getState() == Operation.State.Done); op.releaseReference(); return sourcePortNameList; } public void source_callback(String name) { sourcePortNameList.add(name); } public void sink_callback(String name) { targetPortNameList.add(name); } }