/*
* 21.04.2004 Original verion. davagin@udm.ru.
*-----------------------------------------------------------------------
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*----------------------------------------------------------------------
*/
package davaguine.jmac.decoder;
import davaguine.jmac.info.APEInfo;
import davaguine.jmac.tools.File;
import davaguine.jmac.tools.JMACException;
import java.io.IOException;
/**
* Author: Dmitry Vaguine
* Date: 04.03.2004
* Time: 14:51:31
*/
public class APEDecompressNative extends APEDecompress {
private final int ID;
private int m_nRealFrame;
static {
System.loadLibrary("jmac");
}
public APEDecompressNative(APEInfo pAPEInfo) {
this(pAPEInfo, -1, -1);
}
public APEDecompressNative(APEInfo pAPEInfo, int nStartBlock) {
this(pAPEInfo, nStartBlock, -1);
}
public APEDecompressNative(APEInfo pAPEInfo, int nStartBlock, int nFinishBlock) {
super(pAPEInfo, nStartBlock, nFinishBlock);
ID = registerDecoder(this.getApeInfoIoSource(), this.getApeInfoFileVersion(), this.getApeInfoCompressionLevel(), nStartBlock, nFinishBlock, this.getApeInfoTotalBlocks(), this.getApeInfoBlockAlign(), this.getApeInfoBlocksPerFrame(), this.getApeInfoSampleRate(), this.getApeInfoBitsPerSample(), this.getApeInfoChannels());
if (ID < 0)
throw new JMACException("The Native APE Decoder Can't Be Instantiated");
m_nRealFrame = 0;
}
public void finalize() {
finalize(ID, this.getApeInfoIoSource());
}
public int GetData(byte[] pBuffer, int nBlocks) throws IOException {
int nBlocksRetrieved = GetData(ID, this.getApeInfoIoSource(), pBuffer, nBlocks);
m_nCurrentBlock += nBlocksRetrieved;
return nBlocksRetrieved;
}
public void Seek(int nBlockOffset) throws IOException {
Seek(ID, this.getApeInfoIoSource(), nBlockOffset);
}
private native int registerDecoder(File io, int nVersion, int nCompressionLevel, int nStartBlock, int nFinishBlock, int nTotalBlocks, int nBlockAlign, int nBlocksPerFrame, int nSampleRate, int nBitsPerSample, int nChannels);
private native void finalize(int ID, File io);
private native int GetData(int ID, File io, byte[] pBuffer, int nBlocks);
private native void Seek(int ID, File io, int nBlockOffset) throws IOException;
}