PlainPacket.h

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/* Copyright (C) 2000 KOM/Darmstadt University of Technology
 *
 * You are allowed to use all other parts of the code under the following terms:
 *
 * For non-commercial use, code may be used in unmodified form provided
 * that this copyright notice and this permission notice appear in
 * supporting documentation.
 *
 * This software is provided "as is" and without any express or implied
 * warranties, including, without limitation, the implied warranty of
 * fitness for a particular purpose.
 *
 * The code may be subjected to the GNU General Public License, Version 2,
 * and re-distributed under the terms of this license.
 * As a special exception, permission is granted to link this code
 * with the Qt library and distribute executables, as long as you
 * follow the requirements of the GNU GPL in regard to all of the
 * software in the executable aside from Qt.
 *
 * Commercial use other than under the terms of the GNU General Public
 * License is allowed only after express negotiation of conditions
 * with the authors.
 */
#ifndef PLAINPACKET_H
#define PLAINPACKET_H

#include "PlainFile.h"

/**********************************************************************/
/* PlainPacket                                                        */
/**********************************************************************/

class PlainPacket
{
    int          _stopword;
    PlainReader* _reader;
    unsigned int _stop_pattern[8];
    unsigned int _bytes;
    bool         _ok;
    unsigned     _discard_head_bits         : 3;
    unsigned     _discard_to_first_stopword : 1;
    unsigned     _initialized               : 1;

    void init();

    int discardBeforeStopWord( );

public:
    PlainPacket( PlainReader* reader, int stopword );

    int copyToStopWord( unsigned char* dest,
                        unsigned int&  max,
                        unsigned int&  discard_head,
                        unsigned int&  discard_tail );
};

/**********************************************************************/
/* PlainFilePacket                                                    */
/**********************************************************************/

class PlainFilePacket
        : public PlainFileReader
        , public PlainPacket
{
public:
    PlainFilePacket( int fd, int stopword );
};

/**********************************************************************/
/* PlainRopePacket                                                    */
/**********************************************************************/

class PlainRopePacket
        : public PlainRopeReader
        , public PlainPacket
{
public:
    PlainRopePacket( SH::SinkEndpoint* pull_here, int stopword );
};

#endif /* PLAINPACKET_H */

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