void dumprtp(int socket, int fd_dvr) {
char* buf;
struct rtpheader rh;
int lengthData;
int written;
while(1) {
getrtp2(socket,&rh, &buf,&lengthData);
written = 0;
while(written < lengthData){
written += write(fd_dvr,buf+written, lengthData-written);
}//end while
}//end while
}// end dumprtp
// Write in a cache the rtp packet in right rtp sequence order
static int rtp_cache(int fd, char *buffer, int length)
{
struct rtpheader rh;
int newseq;
char *data;
unsigned short seq;
static int is_first = 1;
getrtp2(fd, &rh, &data, &length);
if(!length)
return 0;
seq = rh.b.sequence;
newseq = seq - rtpbuf.seq[rtpbuf.first];
if ((newseq == 0) || is_first)
{
is_first = 0;
//mp_msg(MSGT_NETWORK, MSGL_DBG4, "RTP (seq[%d]=%d seq=%d, newseq=%d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq);
rtpbuf.first = ( 1 + rtpbuf.first ) % MAXRTPPACKETSIN;
rtpbuf.seq[rtpbuf.first] = ++seq;
goto feed;
}
if (newseq > MAXRTPPACKETSIN)
{
mp_msg(MSGT_NETWORK, MSGL_DBG2, "Overrun(seq[%d]=%d seq=%d, newseq=%d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq);
rtp_cache_reset(seq);
goto feed;
}
if (newseq < 0)
{
int i;
// Is it a stray packet re-sent to network?
for (i=0; i<MAXRTPPACKETSIN; i++) {
if (rtpbuf.seq[i] == seq) {
mp_msg(MSGT_NETWORK, MSGL_ERR, "Stray packet (seq[%d]=%d seq=%d, newseq=%d found at %d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq, i);
return 0; // Yes, it is!
}
}
// Some heuristic to decide when to drop packet or to restart everything
if (newseq > -(3 * MAXRTPPACKETSIN)) {
mp_msg(MSGT_NETWORK, MSGL_ERR, "Too Old packet (seq[%d]=%d seq=%d, newseq=%d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq);
return 0; // Yes, it is!
}
mp_msg(MSGT_NETWORK, MSGL_ERR, "Underrun(seq[%d]=%d seq=%d, newseq=%d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq);
rtp_cache_reset(seq);
goto feed;
}
mp_msg(MSGT_NETWORK, MSGL_DBG4, "Out of Seq (seq[%d]=%d seq=%d, newseq=%d)\n", rtpbuf.first, rtpbuf.seq[rtpbuf.first], seq, newseq);
newseq = ( newseq + rtpbuf.first ) % MAXRTPPACKETSIN;
memcpy (rtpbuf.data[newseq], data, length);
rtpbuf.len[newseq] = length;
rtpbuf.seq[newseq] = seq;
return 0;
feed:
memcpy (buffer, data, length);
return length;
}
