vcx.java

著名的dialogic电话语音卡的java驱动程序,已经验证可用。

// VCX: Model VCX files
// $Id: VCX.java,v 1.4 2003/07/24 20:48:28 cgm8 Exp $
/* 
 * Copyright (c) 1999 Carlos G Mendioroz.
 *
 *  This file is part of D4J.
 *
 *  D4J 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 2 of the License, or (at your option) any later version.
 *  
 *  D4J 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 along with this library; if not, write to the
 *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA  02111-1307, USA.
 *
 * Report problems and direct all questions to:
 *
 *	[e-mail]
 */
package local.dialogic;

import java.io.*;
import java.util.*;

public class VCX extends java.lang.Object
{
    protected FileInputStream vcxFile = null;
    protected int fd;
    protected int offset[];
    protected int length[];
    
    protected int rate;
    protected int maxdir;
    
    public VCX(String vcxFilename) throws IOException {
        fd = Dialogic.openFile(vcxFilename, 0);
        if (fd < 0)
            throw new IOException("VCX(): Can not open file");
        vcxFile = new FileInputStream(vcxFilename);
        // Do not close vcxFile when closing vcx...
        DataInputStream vcx = new DataInputStream(
                                    new FileInputStream(vcxFilename)); 
        maxdir = swap32(vcx.readInt());
        rate = swap32(vcx.readInt());  
        vcx.readInt();          // Entries
        vcx.readInt();          // zero1
        vcx.readInt();          // size
        vcx.readInt();          // zero2
        offset = new int[maxdir+1];
        length = new int[maxdir+1];
        
        for (int i = 1; i <= maxdir; i++) {
            offset[i] = swap32(vcx.readInt());  
            length[i] = swap32(vcx.readInt());  
            vcx.readInt();      // Annotation offset (asciiz)
        }
        vcx.close();
    }
    
    private int swap32(int val) {
        return ((val & 0xff) << 24) | ((val & 0xff00) << 8) | ((val & 0xff0000) >> 8) | ((val & 0xff000000) >>> 24);
    }
    
    public void finalize() throws Throwable
    {
        close();
        super.finalize();
    }
    
    public void close() {
        if (vcxFile != null) {
            try {
                vcxFile.close();
            } catch(IOException ioe) {}
            vcxFile = null;
            Dialogic.closeFile(fd);
            fd = -1;
        }
    }
        
    public IOTT iott(int index) {
        if (index > maxdir || index <= 0)
            return null;
        IOTT io;
        try {
            io = new IOTT(fd, offset[index], length[index]);
        } catch (IOException ioe) {
            throw new RuntimeException ("Invalid VCX.iott(int)");
        }
        return io;
    }
    
    public IOTT iott(int index[]) {
        IOTT io = new IOTT();
        for (int i = 0; i < index.length; i++) {
            if (index[i] > maxdir || index[i] <= 0)
                return io;
            try {
                io.add(fd, offset[index[i]], length[index[i]]);
            } catch (IOException ioe) {
                throw new RuntimeException ("Invalid VCX.iott(int[])");
            }
        }
        return io;
    }

    public IOTT iott(Vector index) {
        IOTT io = new IOTT();
        int e;
        for (int i = 0; i < index.size(); i++) {
            e = ((Integer)index.elementAt(i)).intValue();
            if (e > maxdir || e <= 0)
                return null;
            try {
                io.add(fd, offset[e], length[e]);
            } catch (IOException ioe) {
                throw new RuntimeException ("Invalid VCX.iott(Vector)");
            }
        }
        return io;
    }
}