/*
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* 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
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*
* 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.
*
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package com.sun.media.sound;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioFormat.Encoding;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.Control;
import javax.sound.sampled.Control.Type;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.Line;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineListener;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.Mixer;
import javax.sound.sampled.SourceDataLine;
/**
* Software audio mixer.
*
* @author Karl Helgason
*/
public final class SoftMixingMixer implements Mixer {
private static class Info extends Mixer.Info {
Info() {
super(INFO_NAME, INFO_VENDOR, INFO_DESCRIPTION, INFO_VERSION);
}
}
static final String INFO_NAME = "Gervill Sound Mixer";
static final String INFO_VENDOR = "OpenJDK Proposal";
static final String INFO_DESCRIPTION = "Software Sound Mixer";
static final String INFO_VERSION = "1.0";
static final Mixer.Info info = new Info();
final Object control_mutex = this;
boolean implicitOpen = false;
private boolean open = false;
private SoftMixingMainMixer mainmixer = null;
private AudioFormat format = new AudioFormat(44100, 16, 2, true, false);
private SourceDataLine sourceDataLine = null;
private SoftAudioPusher pusher = null;
private AudioInputStream pusher_stream = null;
private final float controlrate = 147f;
private final long latency = 100000; // 100 msec
private final boolean jitter_correction = false;
private final List<LineListener> listeners = new ArrayList<>();
private final javax.sound.sampled.Line.Info[] sourceLineInfo;
public SoftMixingMixer() {
sourceLineInfo = new javax.sound.sampled.Line.Info[2];
ArrayList<AudioFormat> formats = new ArrayList<>();
for (int channels = 1; channels <= 2; channels++) {
formats.add(new AudioFormat(Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED, 8, channels, channels,
AudioSystem.NOT_SPECIFIED, false));
formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED, 8, channels, channels,
AudioSystem.NOT_SPECIFIED, false));
for (int bits = 16; bits < 32; bits += 8) {
formats.add(new AudioFormat(Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED, bits, channels, channels
* bits / 8, AudioSystem.NOT_SPECIFIED, false));
formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED, bits, channels, channels
* bits / 8, AudioSystem.NOT_SPECIFIED, false));
formats.add(new AudioFormat(Encoding.PCM_SIGNED,
AudioSystem.NOT_SPECIFIED, bits, channels, channels
* bits / 8, AudioSystem.NOT_SPECIFIED, true));
formats.add(new AudioFormat(Encoding.PCM_UNSIGNED,
AudioSystem.NOT_SPECIFIED, bits, channels, channels
* bits / 8, AudioSystem.NOT_SPECIFIED, true));
}
formats.add(new AudioFormat(Encoding.PCM_FLOAT,
AudioSystem.NOT_SPECIFIED, 32, channels, channels * 4,
AudioSystem.NOT_SPECIFIED, false));
formats.add(new AudioFormat(Encoding.PCM_FLOAT,
AudioSystem.NOT_SPECIFIED, 32, channels, channels * 4,
AudioSystem.NOT_SPECIFIED, true));
formats.add(new AudioFormat(Encoding.PCM_FLOAT,
AudioSystem.NOT_SPECIFIED, 64, channels, channels * 8,
AudioSystem.NOT_SPECIFIED, false));
formats.add(new AudioFormat(Encoding.PCM_FLOAT,
AudioSystem.NOT_SPECIFIED, 64, channels, channels * 8,
AudioSystem.NOT_SPECIFIED, true));
}
AudioFormat[] formats_array = formats.toArray(new AudioFormat[formats
.size()]);
sourceLineInfo[0] = new DataLine.Info(SourceDataLine.class,
formats_array, AudioSystem.NOT_SPECIFIED,
AudioSystem.NOT_SPECIFIED);
sourceLineInfo[1] = new DataLine.Info(Clip.class, formats_array,
AudioSystem.NOT_SPECIFIED, AudioSystem.NOT_SPECIFIED);
}
@Override
public Line getLine(Line.Info info) throws LineUnavailableException {
if (!isLineSupported(info))
throw new IllegalArgumentException("Line unsupported: " + info);
if ((info.getLineClass() == SourceDataLine.class)) {
return new SoftMixingSourceDataLine(this, (DataLine.Info) info);
}
if ((info.getLineClass() == Clip.class)) {
return new SoftMixingClip(this, (DataLine.Info) info);
}
throw new IllegalArgumentException("Line unsupported: " + info);
}
@Override
public int getMaxLines(Line.Info info) {
if (info.getLineClass() == SourceDataLine.class)
return AudioSystem.NOT_SPECIFIED;
if (info.getLineClass() == Clip.class)
return AudioSystem.NOT_SPECIFIED;
return 0;
}
@Override
public javax.sound.sampled.Mixer.Info getMixerInfo() {
return info;
}
@Override
public javax.sound.sampled.Line.Info[] getSourceLineInfo() {
Line.Info[] localArray = new Line.Info[sourceLineInfo.length];
System.arraycopy(sourceLineInfo, 0, localArray, 0,
sourceLineInfo.length);
return localArray;
}
@Override
public javax.sound.sampled.Line.Info[] getSourceLineInfo(
javax.sound.sampled.Line.Info info) {
int i;
ArrayList<javax.sound.sampled.Line.Info> infos = new ArrayList<>();
for (i = 0; i < sourceLineInfo.length; i++) {
if (info.matches(sourceLineInfo[i])) {
infos.add(sourceLineInfo[i]);
}
}
return infos.toArray(new Line.Info[infos.size()]);
}
@Override
public Line[] getSourceLines() {
Line[] localLines;
synchronized (control_mutex) {
if (mainmixer == null)
return new Line[0];
SoftMixingDataLine[] sourceLines = mainmixer.getOpenLines();
localLines = new Line[sourceLines.length];
for (int i = 0; i < localLines.length; i++) {
localLines[i] = sourceLines[i];
}
}
return localLines;
}
@Override
public javax.sound.sampled.Line.Info[] getTargetLineInfo() {
return new javax.sound.sampled.Line.Info[0];
}
@Override
public javax.sound.sampled.Line.Info[] getTargetLineInfo(
javax.sound.sampled.Line.Info info) {
return new javax.sound.sampled.Line.Info[0];
}
@Override
public Line[] getTargetLines() {
return new Line[0];
}
@Override
public boolean isLineSupported(javax.sound.sampled.Line.Info info) {
if (info != null) {
for (int i = 0; i < sourceLineInfo.length; i++) {
if (info.matches(sourceLineInfo[i])) {
return true;
}
}
}
return false;
}
@Override
public boolean isSynchronizationSupported(Line[] lines, boolean maintainSync) {
return false;
}
@Override
public void synchronize(Line[] lines, boolean maintainSync) {
throw new IllegalArgumentException(
"Synchronization not supported by this mixer.");
}
@Override
public void unsynchronize(Line[] lines) {
throw new IllegalArgumentException(
"Synchronization not supported by this mixer.");
}
@Override
public void addLineListener(LineListener listener) {
synchronized (control_mutex) {
listeners.add(listener);
}
}
private void sendEvent(LineEvent event) {
if (listeners.size() == 0)
return;
LineListener[] listener_array = listeners
.toArray(new LineListener[listeners.size()]);
for (LineListener listener : listener_array) {
listener.update(event);
}
}
@Override
public void close() {
if (!isOpen())
return;
sendEvent(new LineEvent(this, LineEvent.Type.CLOSE,
AudioSystem.NOT_SPECIFIED));
SoftAudioPusher pusher_to_be_closed = null;
AudioInputStream pusher_stream_to_be_closed = null;
synchronized (control_mutex) {
if (pusher != null) {
pusher_to_be_closed = pusher;
pusher_stream_to_be_closed = pusher_stream;
pusher = null;
pusher_stream = null;
}
}
if (pusher_to_be_closed != null) {
// Pusher must not be closed synchronized against control_mutex
// this may result in synchronized conflict between pusher and
// current thread.
pusher_to_be_closed.stop();
try {
pusher_stream_to_be_closed.close();
} catch (IOException e) {
e.printStackTrace();
}
}
synchronized (control_mutex) {
if (mainmixer != null)
mainmixer.close();
open = false;
if (sourceDataLine != null) {
sourceDataLine.drain();
sourceDataLine.close();
sourceDataLine = null;
}
}
}
@Override
public Control getControl(Type control) {
throw new IllegalArgumentException("Unsupported control type : "
+ control);
}
@Override
public Control[] getControls() {
return new Control[0];
}
@Override
public javax.sound.sampled.Line.Info getLineInfo() {
return new Line.Info(Mixer.class);
}
@Override
public boolean isControlSupported(Type control) {
return false;
}
@Override
public boolean isOpen() {
synchronized (control_mutex) {
return open;
}
}
@Override
public void open() throws LineUnavailableException {
if (isOpen()) {
implicitOpen = false;
return;
}
open(null);
}
public void open(SourceDataLine line) throws LineUnavailableException {
if (isOpen()) {
implicitOpen = false;
return;
}
synchronized (control_mutex) {
try {
if (line != null)
format = line.getFormat();
AudioInputStream ais = openStream(getFormat());
if (line == null) {
synchronized (SoftMixingMixerProvider.mutex) {
SoftMixingMixerProvider.lockthread = Thread
.currentThread();
}
try {
Mixer defaultmixer = AudioSystem.getMixer(null);
if (defaultmixer != null)
{
// Search for suitable line
DataLine.Info idealinfo = null;
AudioFormat idealformat = null;
Line.Info[] lineinfos = defaultmixer.getSourceLineInfo();
idealFound:
for (int i = 0; i < lineinfos.length; i++) {
if(lineinfos[i].getLineClass() == SourceDataLine.class)
{
DataLine.Info info = (DataLine.Info)lineinfos[i];
AudioFormat[] formats = info.getFormats();
for (int j = 0; j < formats.length; j++) {
AudioFormat format = formats[j];
if(format.getChannels() == 2 ||
format.getChannels() == AudioSystem.NOT_SPECIFIED)
if(format.getEncoding().equals(Encoding.PCM_SIGNED) ||
format.getEncoding().equals(Encoding.PCM_UNSIGNED))
if(format.getSampleRate() == AudioSystem.NOT_SPECIFIED ||
format.getSampleRate() == 48000.0)
if(format.getSampleSizeInBits() == AudioSystem.NOT_SPECIFIED ||
format.getSampleSizeInBits() == 16)
{
idealinfo = info;
int ideal_channels = format.getChannels();
boolean ideal_signed = format.getEncoding().equals(Encoding.PCM_SIGNED);
float ideal_rate = format.getSampleRate();
boolean ideal_endian = format.isBigEndian();
int ideal_bits = format.getSampleSizeInBits();
if(ideal_bits == AudioSystem.NOT_SPECIFIED) ideal_bits = 16;
if(ideal_channels == AudioSystem.NOT_SPECIFIED) ideal_channels = 2;
if(ideal_rate == AudioSystem.NOT_SPECIFIED) ideal_rate = 48000;
idealformat = new AudioFormat(ideal_rate, ideal_bits,
ideal_channels, ideal_signed, ideal_endian);
break idealFound;
}
}
}
}
if(idealformat != null)
{
format = idealformat;
line = (SourceDataLine) defaultmixer.getLine(idealinfo);
}
}
if(line == null)
line = AudioSystem.getSourceDataLine(format);
} finally {
synchronized (SoftMixingMixerProvider.mutex) {
SoftMixingMixerProvider.lockthread = null;
}
}
if (line == null)
throw new IllegalArgumentException("No line matching "
+ info.toString() + " is supported.");
}
double latency = this.latency;
if (!line.isOpen()) {
int bufferSize = getFormat().getFrameSize()
* (int) (getFormat().getFrameRate() * (latency / 1000000f));
line.open(getFormat(), bufferSize);
// Remember that we opened that line
// so we can close again in SoftSynthesizer.close()
sourceDataLine = line;
}
if (!line.isActive())
line.start();
int controlbuffersize = 512;
try {
controlbuffersize = ais.available();
} catch (IOException e) {
}
// Tell mixer not fill read buffers fully.
// This lowers latency, and tells DataPusher
// to read in smaller amounts.
// mainmixer.readfully = false;
// pusher = new DataPusher(line, ais);
int buffersize = line.getBufferSize();
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