Mercurial > hg > pulseaudio
view src/java/org/classpath/icedtea/pulseaudio/PulseAudioSourceDataLine.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 | fa7dd0d762f1 |
children | 5108fc37a890 |
line wrap: on
line source
/* PulseAudioSourceDataLine.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.util.ArrayList; import javax.sound.sampled.AudioFormat; import javax.sound.sampled.LineListener; import javax.sound.sampled.LineUnavailableException; import javax.sound.sampled.SourceDataLine; import org.classpath.icedtea.pulseaudio.Operation.State; public class PulseAudioSourceDataLine extends PulseAudioDataLine implements SourceDataLine, PulseAudioPlaybackLine { private PulseAudioMuteControl muteControl; private PulseAudioVolumeControl volumeControl; private boolean muted; private float volume; public PulseAudioSourceDataLine(EventLoop eventLoop, AudioFormat[] formats, AudioFormat defaultFormat) { this.supportedFormats = formats; this.eventLoop = eventLoop; this.lineListeners = new ArrayList<LineListener>(); this.defaultFormat = defaultFormat; this.currentFormat = defaultFormat; this.volume = PulseAudioVolumeControl.MAX_VOLUME; } @Override synchronized public void open(AudioFormat format, int bufferSize) throws LineUnavailableException { super.open(format, bufferSize); volumeControl = new PulseAudioVolumeControl(this, eventLoop); controls.add(volumeControl); muteControl = new PulseAudioMuteControl(this, volumeControl); controls.add(muteControl); PulseAudioMixer parentMixer = PulseAudioMixer.getInstance(); parentMixer.addSourceLine(this); } @Override public void open(AudioFormat format) throws LineUnavailableException { open(format, DEFAULT_BUFFER_SIZE); } public byte[] native_setVolume(float value) { synchronized (eventLoop.threadLock) { return stream.native_setVolume(value); } } public boolean isMuted() { return muted; } public void setMuted(boolean value) { muted = value; } public float getVolume() { return this.volume; } synchronized public void setVolume(float value) { this.volume = value; } protected void connectLine(int bufferSize, Stream masterStream) throws LineUnavailableException { StreamBufferAttributes bufferAttributes = new StreamBufferAttributes( bufferSize, bufferSize / 4, bufferSize / 8, ((bufferSize / 10) > 100 ? bufferSize / 10 : 100), 0); if (masterStream != null) { synchronized (eventLoop.threadLock) { stream.connectForPlayback(Stream.DEFAULT_DEVICE, bufferAttributes, masterStream.getStreamPointer()); } } else { synchronized (eventLoop.threadLock) { stream.connectForPlayback(Stream.DEFAULT_DEVICE, bufferAttributes, null); } } } @Override public int write(byte[] data, int offset, int length) { // can't call write() without open()ing first, but can call write() // without start()ing synchronized (this) { writeInterrupted = false; } if (!isOpen) { throw new IllegalStateException("must call open() before write()"); } int frameSize = currentFormat.getFrameSize(); if (length % frameSize != 0) { throw new IllegalArgumentException( "amount of data to write does not represent an integral number of frames"); } if (length < 0) { throw new IllegalArgumentException("length is negative"); } if (length + offset > data.length) { throw new ArrayIndexOutOfBoundsException(length + offset); } int position = offset; int remainingLength = length; int availableSize = 0; int sizeWritten = 0; boolean interrupted = false; while (remainingLength != 0) { synchronized (eventLoop.threadLock) { do { if (writeInterrupted) { return sizeWritten; } if (availableSize == -1) { return sizeWritten; } availableSize = stream.getWritableSize(); if (availableSize == 0) { try { eventLoop.threadLock.wait(100); } catch (InterruptedException e) { // ignore for now interrupted = true; } } } while (availableSize == 0); if (availableSize > remainingLength) { availableSize = remainingLength; } // only write entire frames, so round down avialableSize to // a // multiple of frameSize availableSize = (availableSize / frameSize) * frameSize; synchronized (this) { if (writeInterrupted) { return sizeWritten; } /* write a little bit of the buffer */ stream.write(data, position, availableSize); } sizeWritten += availableSize; position += availableSize; remainingLength -= availableSize; framesSinceOpen += availableSize / frameSize; } } // all the data should have been played by now assert (sizeWritten == length); /* * FIXME when the stream is flushed() etc, instead of returning length * this should unblock and return the the size of data written so far */ if (interrupted) { Thread.currentThread().interrupt(); } return sizeWritten; } public int available() { synchronized (eventLoop.threadLock) { return stream.getWritableSize(); } }; public int getFramePosition() { return (int) framesSinceOpen; } public long getLongFramePosition() { return framesSinceOpen; } public long getMicrosecondPosition() { float frameRate = currentFormat.getFrameRate(); float time = framesSinceOpen / frameRate; // seconds long microseconds = (long) (time * 1000); return microseconds; } @Override public void drain() { if (!isOpen) { throw new IllegalStateException( "Line must be open before it can be drain()ed"); } synchronized (this) { writeInterrupted = true; } do { synchronized (this) { if (!isOpen) { return; } if (getBytesInBuffer() == 0) { return; } if (isStarted || !isOpen) { break; } try { this.wait(100); } catch (InterruptedException e) { return; } } } while (!isStarted); Operation operation; synchronized (eventLoop.threadLock) { operation = stream.drain(); } operation.waitForCompletion(); operation.releaseReference(); } @Override public void flush() { if (!isOpen) { throw new IllegalStateException( "Line must be open before it can be flush()ed"); } synchronized (this) { writeInterrupted = true; } Operation operation; synchronized (eventLoop.threadLock) { operation = stream.flush(); } operation.waitForCompletion(); operation.releaseReference(); } @Override synchronized public void close() { if (!isOpen) { throw new IllegalStateException("not open so cant close"); } writeInterrupted = true; PulseAudioMixer parent = PulseAudioMixer.getInstance(); parent.removeSourceLine(this); super.close(); } }