/*
* 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.ape;
import com.tulskiy.musique.audio.Decoder;
import com.tulskiy.musique.playlist.Track;
import davaguine.jmac.decoder.IAPEDecompress;
import davaguine.jmac.tools.File;
import davaguine.jmac.tools.JMACException;
import javax.sound.sampled.AudioFormat;
import java.io.IOException;
/**
* @Author: Denis Tulskiy
* @Date: 13.06.2009
*/
public class APEDecoder implements Decoder {
static {
System.setProperty("jmac.NATIVE", "true");
}
private IAPEDecompress decoder;
private static final int BLOCKS_PER_DECODE = 4096 * 2;
private int blockAlign;
private Track track;
public boolean open(Track track) {
this.track = track;
try {
logger.fine("Opening file: " + track.getTrackData().getFile());
File apeInputFile = File.createFile(track.getTrackData().getFile().getAbsolutePath(), "r");
decoder = IAPEDecompress.CreateIAPEDecompress(apeInputFile);
blockAlign = decoder.getApeInfoBlockAlign();
return true;
} catch (IOException e) {
e.printStackTrace();
close();
}
return false;
}
public AudioFormat getAudioFormat() {
return new AudioFormat(decoder.getApeInfoSampleRate(),
decoder.getApeInfoBitsPerSample(),
decoder.getApeInfoChannels(),
true,
false);
}
public void seekSample(long sample) {
try {
if (decoder.getApeInfoDecompressCurrentBlock() != sample) {
decoder.Seek((int) sample);
}
} catch (IOException e) {
e.printStackTrace();
}
}
public int decode(byte[] buf) {
try {
int blocksDecoded = decoder.GetData(buf, BLOCKS_PER_DECODE);
track.getTrackData().setBitrate(decoder.getApeInfoDecompressCurrentBitRate());
if (blocksDecoded <= 0)
return -1;
return blocksDecoded * blockAlign;
} catch (IOException e) {
e.printStackTrace();
} catch (JMACException e) {
e.printStackTrace();
}
return -1;
}
public void close() {
try {
if (decoder != null) {
track.getTrackData().setBitrate(decoder.getApeInfoAverageBitrate());
decoder.getApeInfoIoSource().close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}