/*
* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
* 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
* by Oracle in the LICENSE file that accompanied this code.
*
* 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.media.sound;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Arrays;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.Clip;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineEvent;
import javax.sound.sampled.LineUnavailableException;
/**
* Clip implemention for the SoftMixingMixer.
*
* @author Karl Helgason
*/
public class SoftMixingClip extends SoftMixingDataLine implements Clip {
private AudioFormat format;
private int framesize;
private byte[] data;
private InputStream datastream = new InputStream() {
public int read() throws IOException {
byte[] b = new byte[1];
int ret = read(b);
if (ret < 0)
return ret;
return b[0] & 0xFF;
}
public int read(byte[] b, int off, int len) throws IOException {
if (_loopcount != 0) {
int bloopend = _loopend * framesize;
int bloopstart = _loopstart * framesize;
int pos = _frameposition * framesize;
if (pos + len >= bloopend)
if (pos < bloopend) {
int offend = off + len;
int o = off;
while (off != offend) {
if (pos == bloopend) {
if (_loopcount == 0)
break;
pos = bloopstart;
if (_loopcount != LOOP_CONTINUOUSLY)
_loopcount--;
}
len = offend - off;
int left = bloopend - pos;
if (len > left)
len = left;
System.arraycopy(data, pos, b, off, len);
off += len;
}
if (_loopcount == 0) {
len = offend - off;
int left = bloopend - pos;
if (len > left)
len = left;
System.arraycopy(data, pos, b, off, len);
off += len;
}
_frameposition = pos / framesize;
return o - off;
}
}
int pos = _frameposition * framesize;
int left = bufferSize - pos;
if (left == 0)
return -1;
if (len > left)
len = left;
System.arraycopy(data, pos, b, off, len);
_frameposition += len / framesize;
return len;
}
};
private int offset;
private int bufferSize;
private float[] readbuffer;
private boolean open = false;
private AudioFormat outputformat;
private int out_nrofchannels;
private int in_nrofchannels;
private int frameposition = 0;
private boolean frameposition_sg = false;
private boolean active_sg = false;
private int loopstart = 0;
private int loopend = -1;
private boolean active = false;
private int loopcount = 0;
private boolean _active = false;
private int _frameposition = 0;
private boolean loop_sg = false;
private int _loopcount = 0;
private int _loopstart = 0;
private int _loopend = -1;
private float _rightgain;
private float _leftgain;
private float _eff1gain;
private float _eff2gain;
private AudioFloatInputStream afis;
protected SoftMixingClip(SoftMixingMixer mixer, DataLine.Info info) {
super(mixer, info);
}
protected void processControlLogic() {
_rightgain = rightgain;
_leftgain = leftgain;
_eff1gain = eff1gain;
_eff2gain = eff2gain;
if (active_sg) {
_active = active;
active_sg = false;
} else {
active = _active;
}
if (frameposition_sg) {
_frameposition = frameposition;
frameposition_sg = false;
afis = null;
} else {
frameposition = _frameposition;
}
if (loop_sg) {
_loopcount = loopcount;
_loopstart = loopstart;
_loopend = loopend;
}
if (afis == null) {
afis = AudioFloatInputStream.getInputStream(new AudioInputStream(
datastream, format, AudioSystem.NOT_SPECIFIED));
if (Math.abs(format.getSampleRate() - outputformat.getSampleRate()) > 0.000001)
afis = new AudioFloatInputStreamResampler(afis, outputformat);
}
}
protected void processAudioLogic(SoftAudioBuffer[] buffers) {
if (_active) {
float[] left = buffers[SoftMixingMainMixer.CHANNEL_LEFT].array();
float[] right = buffers[SoftMixingMainMixer.CHANNEL_RIGHT].array();
int bufferlen = buffers[SoftMixingMainMixer.CHANNEL_LEFT].getSize();
int readlen = bufferlen * in_nrofchannels;
if (readbuffer == null || readbuffer.length < readlen) {
readbuffer = new float[readlen];
}
int ret = 0;
try {
ret = afis.read(readbuffer);
if (ret == -1) {
_active = false;
return;
}
if (ret != in_nrofchannels)
Arrays.fill(readbuffer, ret, readlen, 0);
} catch (IOException e) {
}
int in_c = in_nrofchannels;
for (int i = 0, ix = 0; i < bufferlen; i++, ix += in_c) {
left[i] += readbuffer[ix] * _leftgain;
}
if (out_nrofchannels != 1) {
if (in_nrofchannels == 1) {
for (int i = 0, ix = 0; i < bufferlen; i++, ix += in_c) {
right[i] += readbuffer[ix] * _rightgain;
}
} else {
for (int i = 0, ix = 1; i < bufferlen; i++, ix += in_c) {
right[i] += readbuffer[ix] * _rightgain;
}
}
}
if (_eff1gain > 0.0002) {
float[] eff1 = buffers[SoftMixingMainMixer.CHANNEL_EFFECT1]
.array();
for (int i = 0, ix = 0; i < bufferlen; i++, ix += in_c) {
eff1[i] += readbuffer[ix] * _eff1gain;
}
if (in_nrofchannels == 2) {
for (int i = 0, ix = 1; i < bufferlen; i++, ix += in_c) {
eff1[i] += readbuffer[ix] * _eff1gain;
}
}
}
if (_eff2gain > 0.0002) {
float[] eff2 = buffers[SoftMixingMainMixer.CHANNEL_EFFECT2]
.array();
for (int i = 0, ix = 0; i < bufferlen; i++, ix += in_c) {
eff2[i] += readbuffer[ix] * _eff2gain;
}
if (in_nrofchannels == 2) {
for (int i = 0, ix = 1; i < bufferlen; i++, ix += in_c) {
eff2[i] += readbuffer[ix] * _eff2gain;
}
}
}
}
}
public int getFrameLength() {
return bufferSize / format.getFrameSize();
}
public long getMicrosecondLength() {
return (long) (getFrameLength() * (1000000.0 / (double) getFormat()
.getSampleRate()));
}
public void loop(int count) {
LineEvent event = null;
synchronized (control_mutex) {
if (isOpen()) {
if (active)
return;
active = true;
active_sg = true;
loopcount = count;
event = new LineEvent(this, LineEvent.Type.START,
getLongFramePosition());
}
}
if (event != null)
sendEvent(event);
}
public void open(AudioInputStream stream) throws LineUnavailableException,
IOException {
if (isOpen()) {
throw new IllegalStateException("Clip is already open with format "
+ getFormat() + " and frame lengh of " + getFrameLength());
}
if (AudioFloatConverter.getConverter(stream.getFormat()) == null)
throw new IllegalArgumentException("Invalid format : "
+ stream.getFormat().toString());
if (stream.getFrameLength() != AudioSystem.NOT_SPECIFIED) {
byte[] data = new byte[(int) stream.getFrameLength()
* stream.getFormat().getFrameSize()];
int readsize = 512 * stream.getFormat().getFrameSize();
int len = 0;
while (len != data.length) {
if (readsize > data.length - len)
readsize = data.length - len;
int ret = stream.read(data, len, readsize);
if (ret == -1)
break;
if (ret == 0)
Thread.yield();
len += ret;
}
open(stream.getFormat(), data, 0, len);
} else {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] b = new byte[512 * stream.getFormat().getFrameSize()];
int r = 0;
while ((r = stream.read(b)) != -1) {
if (r == 0)
Thread.yield();
baos.write(b, 0, r);
}
open(stream.getFormat(), baos.toByteArray(), 0, baos.size());
}
}
public void open(AudioFormat format, byte[] data, int offset, int bufferSize)
throws LineUnavailableException {
synchronized (control_mutex) {
if (isOpen()) {
throw new IllegalStateException(
"Clip is already open with format " + getFormat()
+ " and frame lengh of " + getFrameLength());
}
if (AudioFloatConverter.getConverter(format) == null)
throw new IllegalArgumentException("Invalid format : "
+ format.toString());
if (bufferSize % format.getFrameSize() != 0)
throw new IllegalArgumentException(
"Buffer size does not represent an integral number of sample frames!");
this.data = data;
this.offset = offset;
this.bufferSize = bufferSize;
this.format = format;
this.framesize = format.getFrameSize();
loopstart = 0;
loopend = -1;
loop_sg = true;
if (!mixer.isOpen()) {
mixer.open();
mixer.implicitOpen = true;
}
outputformat = mixer.getFormat();
out_nrofchannels = outputformat.getChannels();
in_nrofchannels = format.getChannels();
open = true;
mixer.getMainMixer().openLine(this);
}
}
public void setFramePosition(int frames) {
synchronized (control_mutex) {
frameposition_sg = true;
frameposition = frames;
}
}
public void setLoopPoints(int start, int end) {
synchronized (control_mutex) {
if (end != -1) {
if (end < start)
throw new IllegalArgumentException("Invalid loop points : "
+ start + " - " + end);
if (end * framesize > bufferSize)
throw new IllegalArgumentException("Invalid loop points : "
+ start + " - " + end);
}
if (start * framesize > bufferSize)
throw new IllegalArgumentException("Invalid loop points : "
+ start + " - " + end);
if (0 < start)
throw new IllegalArgumentException("Invalid loop points : "
+ start + " - " + end);
loopstart = start;
loopend = end;
loop_sg = true;
}
}
public void setMicrosecondPosition(long microseconds) {
setFramePosition((int) (microseconds * (((double) getFormat()
.getSampleRate()) / 1000000.0)));
}
public int available() {
return 0;
}
public void drain() {
}
public void flush() {
}
public int getBufferSize() {
return bufferSize;
}
public AudioFormat getFormat() {
return format;
}
public int getFramePosition() {
synchronized (control_mutex) {
return frameposition;
}
}
public float getLevel() {
return AudioSystem.NOT_SPECIFIED;
}
public long getLongFramePosition() {
return getFramePosition();
}
public long getMicrosecondPosition() {
return (long) (getFramePosition() * (1000000.0 / (double) getFormat()
.getSampleRate()));
}
public boolean isActive() {
synchronized (control_mutex) {
return active;
}
}
public boolean isRunning() {
synchronized (control_mutex) {
return active;
}
}
public void start() {
LineEvent event = null;
synchronized (control_mutex) {
if (isOpen()) {
if (active)
return;
active = true;
active_sg = true;
loopcount = 0;
event = new LineEvent(this, LineEvent.Type.START,
getLongFramePosition());
}
}
if (event != null)
sendEvent(event);
}
public void stop() {
LineEvent event = null;
synchronized (control_mutex) {
if (isOpen()) {
if (!active)
return;
active = false;
active_sg = true;
event = new LineEvent(this, LineEvent.Type.STOP,
getLongFramePosition());
}
}
if (event != null)
sendEvent(event);
}
public void close() {
LineEvent event = null;
synchronized (control_mutex) {
if (!isOpen())
return;
stop();
event = new LineEvent(this, LineEvent.Type.CLOSE,
getLongFramePosition());
open = false;
mixer.getMainMixer().closeLine(this);
}
if (event != null)
sendEvent(event);
}
public boolean isOpen() {
return open;
}
public void open() throws LineUnavailableException {
if (data == null) {
throw new IllegalArgumentException(
"Illegal call to open() in interface Clip");
}
open(format, data, offset, bufferSize);
}
}