i am making a practise about transmit video in ns2,i read in this link :
http://140.116.72.80/~smallko/ns2/Evalvid_in_NS2.htm
but when i do the step 7:
Recomplie NS2
cd ns-allinone-2.27/ns-2.27
make clean; make
i have this error in terminal:
myevalvid/myudp.cc: In constructor ‘myUdpAgent::myUdpAgent()’:
myevalvid/myudp.cc:19:21: error: cannot call constructor ‘myUdpAgent::UdpAgent’ directly [-fpermissive]
myevalvid/myudp.cc:19:21: error: for a function-style cast, remove the redundant ‘::UdpAgent’ [-fpermissive]
myevalvid/myudp.cc: In member function ‘virtual void myUdpAgent::sendmsg(int, AppData*, const char*)’:
myevalvid/myudp.cc:56:123: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long unsigned int’ [-Wformat]
myevalvid/myudp.cc:78:123: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘long unsigned int’ [-Wformat]
make: *** [myevalvid/myudp.o] Error 1
this is file myudp.cc:
#include "myudp.h"
#include "rtp.h"
#include "random.h"
#include "address.h"
#include "ip.h"
static class myUdpAgentClass : public TclClass {
public:
myUdpAgentClass() : TclClass("Agent/myUDP") {}
TclObject* create(int, const char*const*) {
return (new myUdpAgent());
}
} class_myudp_agent;
myUdpAgent::myUdpAgent() : id_(0), openfile(0)
{
bind("packetSize_", &size_);
UdpAgent::UdpAgent();
}
void myUdpAgent::sendmsg(int nbytes, AppData* data, const char* flags)
{
Packet *p;
int n;
char buf[100]; //added by smallko
if (size_)
n = nbytes / size_;
else
printf("Error: myUDP size = 0\n");
if (nbytes == -1) {
printf("Error: sendmsg() for UDP should not be -1\n");
return;
}
// If they are sending data, then it must fit within a single packet.
if (data && nbytes > size_) {
printf("Error: data greater than maximum myUDP packet size\n");
return;
}
double local_time = Scheduler::instance().clock();
while (n-- > 0) {
p = allocpkt();
hdr_cmn::access(p)->size() = size_;
hdr_rtp* rh = hdr_rtp::access(p);
rh->flags() = 0;
rh->seqno() = ++seqno_;
hdr_cmn::access(p)->timestamp() =
(u_int32_t)(SAMPLERATE*local_time);
hdr_cmn::access(p)->sendtime_ = local_time; // (smallko)
if(openfile!=0){
hdr_cmn::access(p)->frame_pkt_id_ = id_++;
sprintf(buf, "%-16f id %-16d udp %-16d\n", local_time, hdr_cmn::access(p)->frame_pkt_id_, hdr_cmn::access(p)->size()-28);
fwrite(buf, strlen(buf), 1, BWFile);
//printf("%-16f id %-16d udp %-16d\n", local_time, hdr_cmn::access(p)->frame_pkt_id_, hdr_cmn::access(p)->size()-28);
}
// add "beginning of talkspurt" labels (tcl/ex/test-rcvr.tcl)
if (flags && (0 ==strcmp(flags, "NEW_BURST")))
rh->flags() |= RTP_M;
p->setdata(data);
target_->recv(p);
}
n = nbytes % size_;
if (n > 0) {
p = allocpkt();
hdr_cmn::access(p)->size() = n;
hdr_rtp* rh = hdr_rtp::access(p);
rh->flags() = 0;
rh->seqno() = ++seqno_;
hdr_cmn::access(p)->timestamp() =
(u_int32_t)(SAMPLERATE*local_time);
hdr_cmn::access(p)->sendtime_ = local_time; // (smallko)
if(openfile!=0){
hdr_cmn::access(p)->frame_pkt_id_ = id_++;
sprintf(buf, "%-16f id %-16d udp %-16d\n", local_time, hdr_cmn::access(p)->frame_pkt_id_, hdr_cmn::access(p)->size()-28);
fwrite(buf, strlen(buf), 1, BWFile);
//printf("%-16f id %-16d udp %-16d\n", local_time, hdr_cmn::access(p)->frame_pkt_id_, hdr_cmn::access(p)->size()-28);
}
// add "beginning of talkspurt" labels (tcl/ex/test-rcvr.tcl)
if (flags && (0 == strcmp(flags, "NEW_BURST")))
rh->flags() |= RTP_M;
p->setdata(data);
target_->recv(p);
}
idle();
}
int myUdpAgent::command(int argc, const char*const* argv)
{
if(argc ==2) { //added by smallko
if (strcmp(argv[1], "closefile") == 0) {
if(openfile==1)
fclose(BWFile);
return (TCL_OK);
}
}
if (argc ==3) { //added by smallko
if (strcmp(argv[1], "set_filename") == 0) {
strcpy(BWfile, argv[2]);
BWFile = fopen(BWfile, "w");
openfile=1;
return (TCL_OK);
}
}
return (UdpAgent::command(argc, argv));
}
please help me
transmit video
