Mercurial > hg > icedtea12
view pulseaudio/src/java/org/classpath/icedtea/pulseaudio/PulseAudioSourceDataLine.java @ 2624:b746d080787e
PR734: Fix pulse-java latency problem.
2011-06-20 Denis Lila <dlila@redhat.com>
* pulseaudio/src/java/org/classpath/icedtea/pulseaudio/PulseAudioDataLine.java
(bufferSize): Remove.
(getBufferSize): Return stream.getBufferSize().
* pulseaudio/src/java/org/classpath/icedtea/pulseaudio/PulseAudioSourceDataLine.java
(connectLine): Improve formatting.
* pulseaudio/src/java/org/classpath/icedtea/pulseaudio/PulseAudioTargetDataLine.java
(connectLine): Set up flags to adjust the latency, if needed.
* pulseaudio/src/java/org/classpath/icedtea/pulseaudio/Stream.java
(bufAttr, bufAttrMutex): New members.
(setBufAttr, bufferAttrCallback): New methods. They both set bufAttr.
(getBufferSize): Return the current buffer size.
(connectForRecording): Add a flags argument to allow callers to chose the
flags.
(stateCallback): When the stream is ready, set the buffer attributes to
the actual ones used by the server.
* pulseaudio/src/native/org_classpath_icedtea_pulseaudio_Stream.c
(buf_attr_changed_callback): New function.
(Java_org_classpath_icedtea_pulseaudio_Stream_native_1pa_1stream_1new):
Set the buffer attribute callback.
author | Denis Lila <dlila@redhat.com> |
---|---|
date | Mon, 20 Jun 2011 11:23:24 -0400 |
parents | ae07c41dc3c2 |
children | 9ef423f94e8c |
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/* 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.DataLine; import javax.sound.sampled.Line; import javax.sound.sampled.LineListener; import javax.sound.sampled.LineUnavailableException; import javax.sound.sampled.SourceDataLine; import org.classpath.icedtea.pulseaudio.Debug.DebugLevel; public final class PulseAudioSourceDataLine extends PulseAudioDataLine implements SourceDataLine, PulseAudioPlaybackLine { private PulseAudioVolumeControl volumeControl; public static final String DEFAULT_SOURCEDATALINE_NAME = "Audio Stream"; /* * Package-private constructor only called by PulseAudioMixer */ PulseAudioSourceDataLine(AudioFormat[] formats, AudioFormat defaultFormat) { this.supportedFormats = formats; this.lineListeners = new ArrayList<LineListener>(); this.defaultFormat = defaultFormat; this.currentFormat = defaultFormat; this.streamName = DEFAULT_SOURCEDATALINE_NAME; } @Override synchronized public void open(AudioFormat format, int bufferSize) throws LineUnavailableException { super.open(format, bufferSize); volumeControl = new PulseAudioVolumeControl(this, eventLoop); controls.add(volumeControl); PulseAudioMixer parentMixer = PulseAudioMixer.getInstance(); parentMixer.addSourceLine(this); Debug.println(DebugLevel.Verbose, "PulseAudioSourceDataLine.open(): " + "line opened"); } @Override public void open(AudioFormat format) throws LineUnavailableException { open(format, DEFAULT_BUFFER_SIZE); } // FIXME public byte[] native_set_volume(float value) { synchronized (eventLoop.threadLock) { return stream.native_set_volume(value); } } public byte[] native_update_volume() { synchronized (eventLoop.threadLock) { return stream.native_update_volume(); } } @Override public float getCachedVolume() { return stream.getCachedVolume(); } @Override synchronized public void setCachedVolume(float value) { stream.setCachedVolume(value); } @Override protected void connectLine(int bufferSize, Stream masterStream) throws LineUnavailableException { StreamBufferAttributes bufferAttributes = new StreamBufferAttributes( bufferSize, bufferSize / 4, bufferSize / 8, Math.max(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()) { // A closed line can write exactly 0 bytes. return 0; } 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 < 0 || offset < 0 || offset > data.length - length) { throw new ArrayIndexOutOfBoundsException( "Overflow condition: buffer.length=" + data.length + " offset= " + offset + " length=" + length ); } 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); if (interrupted) { Thread.currentThread().interrupt(); } return sizeWritten; } @Override public int available() { synchronized (eventLoop.threadLock) { return stream.getWritableSize(); } }; @Override public int getFramePosition() { return (int) framesSinceOpen; } @Override public long getLongFramePosition() { return framesSinceOpen; } @Override public long getMicrosecondPosition() { float frameRate = currentFormat.getFrameRate(); float time = framesSinceOpen / frameRate; // seconds long microseconds = (long) (time * SECONDS_TO_MICROSECONDS); return microseconds; } @Override public void drain() { synchronized (this) { writeInterrupted = true; } do { synchronized (this) { if (!isOpen()) { return; } if (getBytesInBuffer() == 0) { return; } if (isStarted) { 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() { synchronized (this) { writeInterrupted = true; } if (isOpen()) { Operation operation; synchronized (eventLoop.threadLock) { operation = stream.flush(); } operation.waitForCompletion(); operation.releaseReference(); } } @Override synchronized public void close() { if (!isOpen()) { return; } writeInterrupted = true; PulseAudioMixer parent = PulseAudioMixer.getInstance(); parent.removeSourceLine(this); super.close(); Debug.println(DebugLevel.Verbose, "PulseAudioSourceDataLine.close():" + " line closed"); } @Override public Line.Info getLineInfo() { return new DataLine.Info(SourceDataLine.class, supportedFormats, StreamBufferAttributes.MIN_VALUE, StreamBufferAttributes.MAX_VALUE); } }