/*
* 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.info;
import davaguine.jmac.tools.ByteBuffer;
import davaguine.jmac.tools.File;
import davaguine.jmac.tools.IntegerPointer;
import davaguine.jmac.tools.JMACException;
import java.io.IOException;
/**
* Author: Dmitry Vaguine
* Date: 07.05.2004
* Time: 14:07:31
*/
public abstract class InputSource {
// construction / destruction
public InputSource(File pIO, WaveFormat pwfeSource, IntegerPointer pTotalBlocks, IntegerPointer pHeaderBytes, IntegerPointer pTerminatingBytes) throws IOException {
}
public InputSource(String pSourceName, WaveFormat pwfeSource, IntegerPointer pTotalBlocks, IntegerPointer pHeaderBytes, IntegerPointer pTerminatingBytes) throws IOException {
}
// get data
public abstract int GetData(ByteBuffer pBuffer, int nBlocks) throws IOException;
// get header / terminating data
public abstract void GetHeaderData(byte[] pBuffer) throws IOException;
public abstract void GetTerminatingData(byte[] pBuffer) throws IOException;
public abstract void Close() throws IOException;
public static InputSource CreateInputSource(String pSourceName, WaveFormat pwfeSource, IntegerPointer pTotalBlocks, IntegerPointer pHeaderBytes, IntegerPointer pTerminatingBytes) throws IOException {
// error check the parameters
if ((pSourceName == null) || (pSourceName.length() == 0))
throw new JMACException("Bad Parameters");
// get the extension
int index = pSourceName.lastIndexOf('.');
String pExtension = "";
if (index >= 0)
pExtension = pSourceName.substring(pSourceName.lastIndexOf('.'));
// create the proper input source
if (pExtension.toLowerCase().equals(".wav")) {
return new WAVInputSource(pSourceName, pwfeSource, pTotalBlocks, pHeaderBytes, pTerminatingBytes);
} else
throw new JMACException("Invalid Input File");
}
}