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/****************************************************************************
** File: rtp.c
**
** Author: Mike Borella
**
** Comments: Dump RTP header information.
**
*****************************************************************************/
#include <stdio.h>
#include "config.h"
#include "rtp.h"
extern u_char *packet_end;
/*----------------------------------------------------------------------------
**
** dump_rtp()
**
** Parse RTP packet and dump fields
**
**----------------------------------------------------------------------------
*/
void dump_rtp(u_char *bp, int length)
{
u_char *ep = bp + length;
u_char *p;
RtpHdr *rtp;
int i;
/*
* Make sure we don't run off the end of the packet
*/
if (ep > packet_end)
ep = packet_end;
p = bp;
printf("-----------------------------------------------------------------\n");
printf(" RTP Header\n");
printf("-----------------------------------------------------------------\n");
rtp = (RtpHdr *) p;
printf("Version: %d\n", (int) rtp->version);
printf("Padding: %d\n", (int) rtp->padding);
printf("Extension: %d\n", (int) rtp->extension);
printf("CSRC count: %d\n", (int) rtp->csrc_count);
printf("Marker: %d\n", (int) rtp->marker);
printf("Payload type: %d\n", (int) rtp->payload_type);
printf("Sequence number: %d\n", (u_int16_t) rtp->seqno);
printf("Timestamp: %d\n", (u_int32_t) rtp->timestamp);
printf("SSRC: %d\n", (u_int32_t) rtp->ssrc);
p = p + sizeof(RtpHdr);
/*
* Dump contributing sources
*/
for (i=0; i < rtp->csrc_count; i++)
{
printf("CSRC %d\n", EXTRACT_32BITS(p));
p = p + sizeof(u_int32_t);
if (p > ep)
{
printf("beyond end of packet\n");
return;
}
}
}
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