/*
* Copyright (c) 2008, 2009, 2010 Denis Tulskiy
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with this work. If not, see <http://www.gnu.org/licenses/>.
*/
package com.tulskiy.musique.audio.formats.uncompressed;
import com.tulskiy.musique.audio.Encoder;
import com.tulskiy.musique.system.configuration.Configuration;
import javax.sound.sampled.AudioFormat;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
/**
* Author: Denis Tulskiy
* Date: Jul 25, 2010
*/
public class PCMEncoder implements Encoder {
private RandomAccessFile output;
private int length;
private AudioFormat fmt;
@Override
public boolean open(File outputFile, AudioFormat fmt, Configuration options) {
this.fmt = fmt;
try {
output = new RandomAccessFile(outputFile, "rw");
output.setLength(0);
output.write(new byte[44]);
length = 0;
return true;
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
@Override
public void encode(byte[] buf, int len) {
try {
output.write(buf, 0, len);
length += len;
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void close() {
try {
if (output != null) {
short channels = (short) fmt.getChannels();
int sampleRate = (int) fmt.getSampleRate();
short bps = (short) fmt.getSampleSizeInBits();
ByteBuffer header = ByteBuffer.allocate(44);
header.order(ByteOrder.LITTLE_ENDIAN);
header.put("RIFF".getBytes());
header.putInt(36 + length);
header.put("WAVE".getBytes());
header.put("fmt ".getBytes());
header.putInt(16);
header.putShort((short) 1);
header.putShort(channels);
header.putInt(sampleRate);
header.putInt(sampleRate * channels * bps / 8);
header.putShort((short) (channels * bps / 8));
header.putShort(bps);
header.put("data".getBytes());
header.putInt(length);
output.seek(0);
output.write(header.array());
output.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}