/*
* Copyright (c) 2008, 2009, 2010, 2011 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.flac;
import com.tulskiy.musique.audio.Encoder;
import com.tulskiy.musique.system.configuration.Configuration;
import com.tulskiy.musique.util.AudioMath;
import javaFlacEncoder.EncodingConfiguration;
import javaFlacEncoder.FLACFileOutputStream;
import javaFlacEncoder.StreamConfiguration;
import javax.sound.sampled.AudioFormat;
import java.io.File;
import java.io.IOException;
/**
* Author: Denis Tulskiy
* Date: 5/28/11
*/
public class FLACEncoder implements Encoder {
private javaFlacEncoder.FLACEncoder encoder;
private FLACFileOutputStream outputStream;
private int[] buffer = new int[65536];
private AudioFormat fmt;
private int unencodedSamples;
@Override
public boolean open(File outputFile, AudioFormat fmt, Configuration options) {
try {
this.fmt = fmt;
encoder = new javaFlacEncoder.FLACEncoder();
StreamConfiguration streamConfiguration = new StreamConfiguration();
streamConfiguration.setBitsPerSample(fmt.getSampleSizeInBits());
streamConfiguration.setChannelCount(fmt.getChannels());
streamConfiguration.setSampleRate((int) fmt.getSampleRate());
encoder.setStreamConfiguration(streamConfiguration);
EncodingConfiguration encodingConfiguration = new EncodingConfiguration();
encoder.setEncodingConfiguration(encodingConfiguration);
outputStream = new FLACFileOutputStream(outputFile.getAbsolutePath());
encoder.setOutputStream(outputStream);
encoder.openFLACStream();
unencodedSamples = 0;
return true;
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
@Override
public void encode(byte[] buf, int len) {
try {
int length = AudioMath.convertBuffer(buf, buffer, len, fmt);
int samples = length / fmt.getChannels();
encoder.addSamples(buffer, samples);
unencodedSamples += samples;
unencodedSamples -= encoder.encodeSamples(unencodedSamples, false);
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void close() {
try {
encoder.encodeSamples(unencodedSamples, true);
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}