#include <u.h>#include <libc.h>#include <ip.h>#include "dat.h"#include "protos.h" typedef struct Hdr Hdr;struct Hdr {	uchar	hdr;		/* RTP header */	uchar	marker;		/* Payload and marker */	uchar	seq[2];		/* Sequence number */	uchar	ts[4];		/* Time stamp */	uchar	ssrc[4];	/* Synchronization source identifier */}; enum{	RTPLEN = 12,		/* Minimum size of an RTP header */}; static intp_seprint(Msg *m){	int cc, i;	ushort seq;	ulong ssrc, ts;	Hdr*h; 	if(m->pe - m->ps < RTPLEN)		return -1; 	h = (Hdr*)m->ps;	cc = h->hdr & 0xf;	if(m->pe - m->ps < RTPLEN + cc * 4)		return -1; 	m->ps += RTPLEN; 	seq = NetS(h->seq);	ts = NetL(h->ts);	ssrc = NetL(h->ssrc); 	m->p = seprint(m->p, m->e, "version=%d x=%d cc=%d seq=%d ts=%ld ssrc=%ulx",		(h->hdr >> 6) & 3, (h->hdr >> 4) & 1, cc, seq, ts, ssrc);	for(i = 0; i < cc; i++){		m->p = seprint(m->p, m->e, " csrc[%d]=%d", i, NetL(m->ps));		m->ps += 4;	}	m->pr = nil;	return 0;} Proto rtp = {	"rtp",	nil,	nil,	p_seprint,	nil,	nil,	nil,	defaultframer,};