MNRTPSsrcCollisionList.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 MN_RTP_SSRC_COLLISION_LIST_H
#define MN_RTP_SSRC_COLLISION_LIST_H

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>

#include "MNMutex.h"
#include "MNRTPdefs.h"
#include "MNArrayList.h"
#include "MNRTPtime.h"
#include "var_type.h"

/***********************************************************************
 * SsrcCollisionList
 ***********************************************************************/

class SsrcCollisionList
{
    struct addr_list_item
    {
      struct sockaddr_in addresse;
      ntp64     time;
      u_int32   ssrc;

      addr_list_item( const struct sockaddr_in& addr,
                      ntp64                     t,
                      u_int32                   s )
          : addresse(addr)
          , time(t)
          , ssrc(s)
      { }
    };

    MNArrayList<addr_list_item*> _list;
    MNMutex                      _lock;

public:
    ~SsrcCollisionList();

    void lock();
    void unlock();

    bool update_if( const struct sockaddr_in& addr,
                    ntp64 now,
                    u_int32 ssrc );

    size_t update_expire( ntp64 now );

    size_t remove_ssrc( u_int32 ssrc );
};

#endif /* MN_RTP_SSRC_COLLISION_LIST_H */

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