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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#ifdef HAVE_POLL
#include <poll.h>
#endif
#include <unistd.h>
#ifdef _WIN32
#include <ws2spi.h>
#include <winsock2.h>
#endif
#include <avdec_private.h>
// #include <inttypes.h>
#include <rtp.h>
int bgav_rtcp_sr_read(bgav_input_context_t * ctx, rtcp_sr_t * ret)
{
uint16_t h;
int i;
if(!bgav_input_read_16_be(ctx, &h))
return 0;
ret->version = (h >> 14) & 0x03;
ret->padding = (h >> 13) & 0x01;
ret->rc = (h >> 8) & 0x1f;
ret->type = (h) & 0xff;
if(!bgav_input_read_16_be(ctx, &ret->length) ||
!bgav_input_read_32_be(ctx, &ret->ssrc) ||
!bgav_input_read_64_be(ctx, &ret->ntp_time) ||
!bgav_input_read_32_be(ctx, &ret->rtp_time) ||
!bgav_input_read_32_be(ctx, &ret->packet_count) ||
!bgav_input_read_32_be(ctx, &ret->octet_count))
return 0;
for(i = 0; i < ret->rc; i++)
{
if(!bgav_input_read_32_be(ctx, &ret->reports[i].ssrc) ||
!bgav_input_read_8(ctx, &ret->reports[i].fraction_lost) ||
!bgav_input_read_24_be(ctx, &ret->reports[i].cumulative_lost) ||
!bgav_input_read_32_be(ctx, &ret->reports[i].highest_ext_seq) ||
!bgav_input_read_32_be(ctx, &ret->reports[i].jitter) ||
!bgav_input_read_32_be(ctx, &ret->reports[i].lsr) ||
!bgav_input_read_32_be(ctx, &ret->reports[i].dlsr))
return 0;
}
return 1;
}
int bgav_rtcp_rr_write(rtcp_sr_t * r, uint8_t * data)
{
int i;
uint8_t * pos = data;
pos[0] = (r->version << 6) | (r->padding << 5) | r->rc;
pos++;
pos[0] = r->type;
pos++;
GAVL_16BE_2_PTR(r->length, pos);pos+=2;
GAVL_32BE_2_PTR(r->ssrc, pos);pos+=4;
for(i = 0; i < r->rc; i++)
{
GAVL_32BE_2_PTR(r->reports[i].ssrc, pos);pos+=4;
*pos = r->reports[i].fraction_lost;pos++;
GAVL_24BE_2_PTR(r->reports[i].cumulative_lost, pos);pos+=3;
GAVL_32BE_2_PTR(r->reports[i].highest_ext_seq, pos);pos+=4;
GAVL_32BE_2_PTR(r->reports[i].jitter, pos);pos+=4;
GAVL_32BE_2_PTR(r->reports[i].lsr, pos);pos+=4;
GAVL_32BE_2_PTR(r->reports[i].dlsr, pos);pos+=4;
}
return pos - data;
}
void bgav_rtcp_sr_dump(rtcp_sr_t * r)
{
int i;
bgav_dprintf("RTCP RR\n");
bgav_dprintf(" version: %d\n", r->version);
bgav_dprintf(" padding: %d\n", r->padding);
bgav_dprintf(" rc: %d\n", r->rc);
bgav_dprintf(" type: %d\n", r->type);
bgav_dprintf(" length: %d\n", r->length);
bgav_dprintf(" ssrc: %08x\n", r->ssrc);
bgav_dprintf(" ntp_time: %"PRIu64"\n", r->ntp_time);
bgav_dprintf(" rtp_time: %u\n", r->rtp_time);
bgav_dprintf(" packet_count: %u\n", r->packet_count);
bgav_dprintf(" octet_count: %u\n", r->octet_count);
for(i = 0; i < r->rc; i++)
{
bgav_dprintf(" Report %d\n", i+1);
bgav_dprintf(" ssrc: %08x\n", r->reports[i].ssrc);
bgav_dprintf(" fraction_lost: %d\n", r->reports[i].fraction_lost);
bgav_dprintf(" cumulative_lost: %d\n", r->reports[i].cumulative_lost);
bgav_dprintf(" highest_ext_seq: %d\n", r->reports[i].highest_ext_seq);
bgav_dprintf(" jitter: %d\n", r->reports[i].jitter);
bgav_dprintf(" lsr: %d\n", r->reports[i].lsr);
bgav_dprintf(" dlsr: %d\n", r->reports[i].dlsr);
}
}
void bgav_rtcp_rr_setup(rtcp_sr_t * r, rtp_stats_t * s,
uint32_t lsr, uint32_t client_ssrc, uint32_t server_ssrc)
{
int extended_max;
int expected;
int fraction_lost;
int lost;
int lost_interval;
int received_interval;
int expected_interval;
extended_max = s->cycles + s->max_seq;
expected = extended_max - s->base_seq + 1;
lost = expected - s->received;
expected_interval = expected - s->expected_prior;
s->expected_prior = expected;
received_interval = s->received - s->received_prior;
s->received_prior = s->received;
lost_interval = expected_interval - received_interval;
if (expected_interval == 0 || lost_interval <= 0)
fraction_lost = 0;
else
fraction_lost = (lost_interval << 8) / expected_interval;
r->version = 2;
r->padding = 0;
r->rc = 1;
r->type = 201;
r->length = ((8+(r->rc*24)) / 4) - 1;
r->ssrc = client_ssrc;
r->reports[0].ssrc = server_ssrc;
r->reports[0].fraction_lost = fraction_lost;
r->reports[0].cumulative_lost = lost;
r->reports[0].highest_ext_seq = extended_max;
r->reports[0].jitter = s->jitter;
r->reports[0].lsr = lsr;
// r->reports[0].dlsr =
}
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