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/*
* Copyright (c) 1995 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Network Research
* Group at Lawrence Berkeley National Laboratory.
* 4. Neither the name of the University nor of the Laboratory may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#) $Header: /cs/research/mice/starship/src/local/CVS_repository/vic/session.h,v 1.3 1999/02/09 17:20:26 piers Exp $ (LBL)
*/
#ifndef vic_session_h
#define vic_session_h
#include "net.h"
#include "transmitter.h"
#include "timer.h"
#include "iohandler.h"
#include "source.h"
#include "mbus.h"
class Source;
class SessionManager;
class DataHandler : public IOHandler {
public:
inline DataHandler(SessionManager& sm) : sm_(sm), net_(0), addrp_(0) {}
virtual void dispatch(int mask);
inline Network* net() const { return (net_); }
inline void net(Network* net) {
unlink();
link(net->rchannel(), TK_READABLE);
net_ = net;
if (addrp_) delete addrp_;
addrp_ = net->addr().copy(); // get right type of address
}
inline int recv(u_char* bp, int len, Address*& addrp) {
return (net_->recv(bp, len, *(addrp = addrp_)));
}
inline void send(u_char* bp, int len) {
net_->send(bp, len);
}
protected:
SessionManager& sm_;
Network* net_;
Address *addrp_;
};
class CtrlHandler : public DataHandler {
public:
inline CtrlHandler(SessionManager& sm) : DataHandler(sm) {}
virtual void dispatch(int mask);
};
class ReportTimer : public Timer {
public:
inline ReportTimer(SessionManager& sm) : sm_(sm) {}
void timeout();
protected:
SessionManager& sm_;
};
class SessionManager : public Transmitter, public MtuAlloc {
public:
SessionManager();
virtual ~SessionManager();
virtual int command(int argc, const char*const* argv);
virtual void recv(CtrlHandler*);
virtual void recv(DataHandler*);
virtual void send_bye();
virtual void send_report();
protected:
void demux(rtphdr* rh, u_char* bp, int cc, Address & addr);
virtual int check_format(int fmt) const = 0;
virtual void transmit(pktbuf* pb);
void send_report(int bye);
int build_bye(rtcphdr* rh, Source& local);
int build_sdes(rtcphdr* rh, Source& s);
u_char* build_sdes_item(u_char* p, int code, Source&);
void parse_sr(rtcphdr* rh, int flags, u_char* ep,
Source* ps, Address & addr);
void parse_rr(rtcphdr* rh, int flags, u_char* ep,
Source* ps, Address & addr);
void parse_rr_records(u_int32_t ssrc, rtcp_rr* r, int cnt,
const u_char* ep, Address & addr);
int sdesbody(u_int32_t* p, u_char* ep, Source* ps,
Address & addr, u_int32_t ssrc);
void parse_sdes(rtcphdr* rh, int flags, u_char* ep, Source* ps,
Address & addr, u_int32_t ssrc);
void parse_bye(rtcphdr* rh, int flags, u_char* ep, Source* ps);
int parseopts(const u_char* bp, int cc, Address & addr) const;
int ckid(const char*, int len);
u_int32_t alloc_srcid(Address & addr) const;
char* stats(char* cp) const;
DataHandler dh_;
CtrlHandler ch_;
ReportTimer rt_;
MBusHandler mb_;
/*XXX cleanup*/
u_int badversion_;
u_int badoptions_;
u_int badfmt_;
u_int badext_;
u_int nrunt_;
u_int32_t last_np_;
u_int32_t sdes_seq_;
double rtcp_inv_bw_;
double rtcp_avg_size_; /* (estimated) average size of rtcp packets */
double rint_; /* current session report rate (in ms) */
int confid_;
u_char* pktbuf_;
};
class AudioSessionManager : public SessionManager {
protected:
int check_format(int fmt) const;
};
class VideoSessionManager : public SessionManager {
protected:
int check_format(int fmt) const;
};
#endif
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