static int send_bye_packet(struct rtcp_sess *sess)
{
const uint32_t ssrc = rtp_sess_ssrc(sess->rs);
struct mbuf *mb;
int err;
mb = mbuf_alloc(512);
if (!mb)
return ENOMEM;
mb->pos = RTCP_HEADROOM;
err = rtcp_encode(mb, RTCP_BYE, 1, &ssrc, "Adjo");
err |= mk_sdes(sess, mb);
if (err)
goto out;
mb->pos = RTCP_HEADROOM;
err = rtcp_send(sess->rs, mb);
out:
mem_deref(mb);
return err;
}
/*
Send a complete receiver report (RR).
It uses the actual informations stored in rtcp_info.
*/
static void
rtcp_send_rr(iptv_rtcp_info_t *info)
{
rtcp_rr_t report;
report.ssrc = htonl(info->source_ssrc);
// Fill in the extended last sequence
union {
uint16_t buffer[2];
uint32_t result;
} join2;
join2.buffer[0] = htons(info->sequence_cycle);
join2.buffer[1] = htons(info->last_received_sequence);
report.last_seq = join2.result;
// We don't compute this for now
report.fraction = 0;
report.lost = -1;
report.lsr = htonl(0);
report.dlsr = htonl(0);
// TODO: see how to put something meaningful
report.jitter = htonl(12);
// Build the full packet
rtcp_t packet;
packet.common.pt = RTCP_RR;
packet.common.count = 1;
// TODO : set the real length
packet.common.length = htons(7);
packet.r.rr.ssrc = htonl(info->my_ssrc);
packet.r.rr.rr[0] = report;
// Build the network packet
sbuf_t network_buffer;
sbuf_init(&network_buffer);
rtcp_append_headers(&network_buffer, &packet);
rtcp_append_rr(&network_buffer, &packet);
// Send it
rtcp_send(info, &network_buffer);
// TODO : send also the SDES CNAME packet
// Cleanup
sbuf_free(&network_buffer);
}
static int send_rtcp_report(struct rtcp_sess *sess)
{
struct mbuf *mb;
int err;
mb = mbuf_alloc(512);
if (!mb)
return ENOMEM;
mb->pos = RTCP_HEADROOM;
err = mk_sr(sess, mb);
err |= mk_sdes(sess, mb);
if (err)
goto out;
mb->pos = RTCP_HEADROOM;
err = rtcp_send(sess->rs, mb);
out:
mem_deref(mb);
return err;
}