| /* $Id$ */ |
| /* |
| * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| * |
| * 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, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <pjmedia/rtcp_xr.h> |
| #include <pjmedia/errno.h> |
| #include <pjmedia/rtcp.h> |
| #include <pj/assert.h> |
| #include <pj/log.h> |
| #include <pj/os.h> |
| #include <pj/sock.h> |
| #include <pj/string.h> |
| |
| #if defined(PJMEDIA_HAS_RTCP_XR) && (PJMEDIA_HAS_RTCP_XR != 0) |
| |
| #define THIS_FILE "rtcp_xr.c" |
| |
| |
| #if PJ_HAS_HIGH_RES_TIMER==0 |
| # error "High resolution timer needs to be enabled" |
| #endif |
| |
| |
| /* RTCP XR payload type */ |
| #define RTCP_XR 207 |
| |
| /* RTCP XR block types */ |
| #define BT_LOSS_RLE 1 |
| #define BT_DUP_RLE 2 |
| #define BT_RCPT_TIMES 3 |
| #define BT_RR_TIME 4 |
| #define BT_DLRR 5 |
| #define BT_STATS 6 |
| #define BT_VOIP_METRICS 7 |
| |
| |
| #define DEFAULT_GMIN 16 |
| |
| |
| #if 0 |
| # define TRACE_(x) PJ_LOG(3,x) |
| #else |
| # define TRACE_(x) ; |
| #endif |
| |
| void pjmedia_rtcp_xr_init( pjmedia_rtcp_xr_session *session, |
| struct pjmedia_rtcp_session *parent_session, |
| pj_uint8_t gmin, |
| unsigned frames_per_packet) |
| { |
| pj_bzero(session, sizeof(pjmedia_rtcp_xr_session)); |
| |
| session->name = parent_session->name; |
| session->rtcp_session = parent_session; |
| pj_memcpy(&session->pkt.common, &session->rtcp_session->rtcp_sr_pkt.common, |
| sizeof(pjmedia_rtcp_common)); |
| session->pkt.common.pt = RTCP_XR; |
| |
| /* Init config */ |
| session->stat.rx.voip_mtc.gmin = (pj_uint8_t)(gmin? gmin : DEFAULT_GMIN); |
| session->ptime = session->rtcp_session->pkt_size * 1000 / |
| session->rtcp_session->clock_rate; |
| session->frames_per_packet = frames_per_packet; |
| |
| /* Init Statistics Summary fields which have non-zero default */ |
| session->stat.rx.stat_sum.jitter.min = (unsigned) -1; |
| session->stat.rx.stat_sum.toh.min = (unsigned) -1; |
| |
| /* Init VoIP Metrics fields which have non-zero default */ |
| session->stat.rx.voip_mtc.signal_lvl = 127; |
| session->stat.rx.voip_mtc.noise_lvl = 127; |
| session->stat.rx.voip_mtc.rerl = 127; |
| session->stat.rx.voip_mtc.r_factor = 127; |
| session->stat.rx.voip_mtc.ext_r_factor = 127; |
| session->stat.rx.voip_mtc.mos_lq = 127; |
| session->stat.rx.voip_mtc.mos_cq = 127; |
| |
| session->stat.tx.voip_mtc.signal_lvl = 127; |
| session->stat.tx.voip_mtc.noise_lvl = 127; |
| session->stat.tx.voip_mtc.rerl = 127; |
| session->stat.tx.voip_mtc.r_factor = 127; |
| session->stat.tx.voip_mtc.ext_r_factor = 127; |
| session->stat.tx.voip_mtc.mos_lq = 127; |
| session->stat.tx.voip_mtc.mos_cq = 127; |
| } |
| |
| void pjmedia_rtcp_xr_fini(pjmedia_rtcp_xr_session *session) |
| { |
| PJ_UNUSED_ARG(session); |
| } |
| |
| PJ_DEF(void) pjmedia_rtcp_build_rtcp_xr( pjmedia_rtcp_xr_session *sess, |
| unsigned rpt_types, |
| void **rtcp_pkt, int *len) |
| { |
| pj_uint16_t size = 0; |
| |
| /* Receiver Reference Time Report Block */ |
| /* Build this block if we have received packets since last build */ |
| if ((rpt_types == 0 || (rpt_types & PJMEDIA_RTCP_XR_RR_TIME)) && |
| sess->rx_last_rr != sess->rtcp_session->stat.rx.pkt) |
| { |
| pjmedia_rtcp_xr_rb_rr_time *r; |
| pjmedia_rtcp_ntp_rec ntp; |
| |
| r = (pjmedia_rtcp_xr_rb_rr_time*) &sess->pkt.buf[size]; |
| pj_bzero(r, sizeof(pjmedia_rtcp_xr_rb_rr_time)); |
| |
| /* Init block header */ |
| r->header.bt = BT_RR_TIME; |
| r->header.specific = 0; |
| r->header.length = pj_htons(2); |
| |
| /* Generate block contents */ |
| pjmedia_rtcp_get_ntp_time(sess->rtcp_session, &ntp); |
| r->ntp_sec = pj_htonl(ntp.hi); |
| r->ntp_frac = pj_htonl(ntp.lo); |
| |
| /* Finally */ |
| size += sizeof(pjmedia_rtcp_xr_rb_rr_time); |
| sess->rx_last_rr = sess->rtcp_session->stat.rx.pkt; |
| } |
| |
| /* DLRR Report Block */ |
| /* Build this block if we have received RR NTP (rx_lrr) before */ |
| if ((rpt_types == 0 || (rpt_types & PJMEDIA_RTCP_XR_DLRR)) && |
| sess->rx_lrr) |
| { |
| pjmedia_rtcp_xr_rb_dlrr *r; |
| pjmedia_rtcp_xr_rb_dlrr_item *dlrr_item; |
| pj_timestamp ts; |
| |
| r = (pjmedia_rtcp_xr_rb_dlrr*) &sess->pkt.buf[size]; |
| pj_bzero(r, sizeof(pjmedia_rtcp_xr_rb_dlrr)); |
| |
| /* Init block header */ |
| r->header.bt = BT_DLRR; |
| r->header.specific = 0; |
| r->header.length = pj_htons(sizeof(pjmedia_rtcp_xr_rb_dlrr)/4 - 1); |
| |
| /* Generate block contents */ |
| dlrr_item = &r->item; |
| dlrr_item->ssrc = pj_htonl(sess->rtcp_session->peer_ssrc); |
| dlrr_item->lrr = pj_htonl(sess->rx_lrr); |
| |
| /* Calculate DLRR */ |
| if (sess->rx_lrr != 0) { |
| pj_get_timestamp(&ts); |
| ts.u64 -= sess->rx_lrr_time.u64; |
| |
| /* Convert DLRR time to 1/65536 seconds resolution */ |
| ts.u64 = (ts.u64 << 16) / sess->rtcp_session->ts_freq.u64; |
| dlrr_item->dlrr = pj_htonl(ts.u32.lo); |
| } else { |
| dlrr_item->dlrr = 0; |
| } |
| |
| /* Finally */ |
| size += sizeof(pjmedia_rtcp_xr_rb_dlrr); |
| } |
| |
| /* Statistics Summary Block */ |
| /* Build this block if we have received packets since last build */ |
| if ((rpt_types == 0 || (rpt_types & PJMEDIA_RTCP_XR_STATS)) && |
| sess->stat.rx.stat_sum.count > 0) |
| { |
| pjmedia_rtcp_xr_rb_stats *r; |
| pj_uint8_t specific = 0; |
| |
| r = (pjmedia_rtcp_xr_rb_stats*) &sess->pkt.buf[size]; |
| pj_bzero(r, sizeof(pjmedia_rtcp_xr_rb_stats)); |
| |
| /* Init block header */ |
| specific |= sess->stat.rx.stat_sum.l ? (1 << 7) : 0; |
| specific |= sess->stat.rx.stat_sum.d ? (1 << 6) : 0; |
| specific |= sess->stat.rx.stat_sum.j ? (1 << 5) : 0; |
| specific |= (sess->stat.rx.stat_sum.t & 3) << 3; |
| r->header.bt = BT_STATS; |
| r->header.specific = specific; |
| r->header.length = pj_htons(9); |
| |
| /* Generate block contents */ |
| r->ssrc = pj_htonl(sess->rtcp_session->peer_ssrc); |
| r->begin_seq = pj_htons((pj_uint16_t) |
| (sess->stat.rx.stat_sum.begin_seq & 0xFFFF)); |
| r->end_seq = pj_htons((pj_uint16_t) |
| (sess->stat.rx.stat_sum.end_seq & 0xFFFF)); |
| if (sess->stat.rx.stat_sum.l) { |
| r->lost = pj_htonl(sess->stat.rx.stat_sum.lost); |
| } |
| if (sess->stat.rx.stat_sum.d) { |
| r->dup = pj_htonl(sess->stat.rx.stat_sum.dup); |
| } |
| if (sess->stat.rx.stat_sum.j) { |
| r->jitter_min = pj_htonl(sess->stat.rx.stat_sum.jitter.min); |
| r->jitter_max = pj_htonl(sess->stat.rx.stat_sum.jitter.max); |
| r->jitter_mean = |
| pj_htonl((unsigned)sess->stat.rx.stat_sum.jitter.mean); |
| r->jitter_dev = |
| pj_htonl(pj_math_stat_get_stddev(&sess->stat.rx.stat_sum.jitter)); |
| } |
| if (sess->stat.rx.stat_sum.t) { |
| r->toh_min = sess->stat.rx.stat_sum.toh.min; |
| r->toh_max = sess->stat.rx.stat_sum.toh.max; |
| r->toh_mean = (unsigned) sess->stat.rx.stat_sum.toh.mean; |
| r->toh_dev = pj_math_stat_get_stddev(&sess->stat.rx.stat_sum.toh); |
| } |
| |
| /* Reset TX statistics summary each time built */ |
| pj_bzero(&sess->stat.rx.stat_sum, sizeof(sess->stat.rx.stat_sum)); |
| sess->stat.rx.stat_sum.jitter.min = (unsigned) -1; |
| sess->stat.rx.stat_sum.toh.min = (unsigned) -1; |
| |
| /* Finally */ |
| size += sizeof(pjmedia_rtcp_xr_rb_stats); |
| pj_gettimeofday(&sess->stat.rx.stat_sum.update); |
| } |
| |
| /* Voip Metrics Block */ |
| /* Build this block if we have received packets */ |
| if ((rpt_types == 0 || (rpt_types & PJMEDIA_RTCP_XR_VOIP_METRICS)) && |
| sess->rtcp_session->stat.rx.pkt) |
| { |
| pjmedia_rtcp_xr_rb_voip_mtc *r; |
| pj_uint32_t c11; |
| pj_uint32_t c13; |
| pj_uint32_t c14; |
| pj_uint32_t c22; |
| pj_uint32_t c23; |
| pj_uint32_t c31; |
| pj_uint32_t c32; |
| pj_uint32_t c33; |
| pj_uint32_t ctotal, m; |
| unsigned est_extra_delay; |
| |
| r = (pjmedia_rtcp_xr_rb_voip_mtc*) &sess->pkt.buf[size]; |
| pj_bzero(r, sizeof(pjmedia_rtcp_xr_rb_voip_mtc)); |
| |
| /* Init block header */ |
| r->header.bt = BT_VOIP_METRICS; |
| r->header.specific = 0; |
| r->header.length = pj_htons(8); |
| |
| /* Use temp vars for easiness. */ |
| c11 = sess->voip_mtc_stat.c11; |
| c13 = sess->voip_mtc_stat.c13; |
| c14 = sess->voip_mtc_stat.c14; |
| c22 = sess->voip_mtc_stat.c22; |
| c23 = sess->voip_mtc_stat.c23; |
| c33 = sess->voip_mtc_stat.c33; |
| m = sess->ptime * sess->frames_per_packet; |
| |
| /* Calculate additional transition counts. */ |
| c31 = c13; |
| c32 = c23; |
| ctotal = c11 + c14 + c13 + c22 + c23 + c31 + c32 + c33; |
| |
| if (ctotal) { |
| pj_uint32_t p32, p23; |
| |
| //original version: |
| //p32 = c32 / (c31 + c32 + c33); |
| if (c31 + c32 + c33 == 0) |
| p32 = 0; |
| else |
| p32 = (c32 << 16) / (c31 + c32 + c33); |
| |
| //original version: |
| //if ((c22 + c23) < 1) { |
| // p23 = 1; |
| //} else { |
| // p23 = 1 - c22 / (c22 + c23); |
| //} |
| if (c23 == 0) { |
| p23 = 0; |
| } else { |
| p23 = (c23 << 16) / (c22 + c23); |
| } |
| |
| /* Calculate loss/discard densities, scaled of 0-256 */ |
| if (c11 == 0) |
| sess->stat.rx.voip_mtc.gap_den = 0; |
| else |
| sess->stat.rx.voip_mtc.gap_den = (pj_uint8_t) |
| ((c14 << 8) / (c11 + c14)); |
| if (p23 == 0) |
| sess->stat.rx.voip_mtc.burst_den = 0; |
| else |
| sess->stat.rx.voip_mtc.burst_den = (pj_uint8_t) |
| ((p23 << 8) / (p23 + p32)); |
| |
| /* Calculate (average) durations, in ms */ |
| if (c13 == 0) { |
| c13 = 1; |
| ctotal += 1; |
| } |
| sess->stat.rx.voip_mtc.gap_dur = (pj_uint16_t) |
| ((c11+c14+c13) * m / c13); |
| sess->stat.rx.voip_mtc.burst_dur = (pj_uint16_t) |
| ((ctotal - (c11+c14+c13)) * m / c13); |
| |
| /* Callculate loss/discard rates, scaled 0-256 */ |
| sess->stat.rx.voip_mtc.loss_rate = (pj_uint8_t) |
| ((sess->voip_mtc_stat.loss_count << 8) / ctotal); |
| sess->stat.rx.voip_mtc.discard_rate = (pj_uint8_t) |
| ((sess->voip_mtc_stat.discard_count << 8) / ctotal); |
| } else { |
| /* No lost/discarded packet yet. */ |
| sess->stat.rx.voip_mtc.gap_den = 0; |
| sess->stat.rx.voip_mtc.burst_den = 0; |
| sess->stat.rx.voip_mtc.gap_dur = 0; |
| sess->stat.rx.voip_mtc.burst_dur = 0; |
| sess->stat.rx.voip_mtc.loss_rate = 0; |
| sess->stat.rx.voip_mtc.discard_rate = 0; |
| } |
| |
| /* Set round trip delay (in ms) to RTT calculated after receiving |
| * DLRR or DLSR. |
| */ |
| if (sess->stat.rtt.last) |
| sess->stat.rx.voip_mtc.rnd_trip_delay = (pj_uint16_t) |
| (sess->stat.rtt.last / 1000); |
| else if (sess->rtcp_session->stat.rtt.last) |
| sess->stat.rx.voip_mtc.rnd_trip_delay = (pj_uint16_t) |
| (sess->rtcp_session->stat.rtt.last / 1000); |
| |
| /* End system delay = RTT/2 + current jitter buffer size + |
| * EXTRA (estimated extra delay) |
| * EXTRA will cover additional delay introduced by other components of |
| * audio engine, e.g: sound device, codec, AEC, PLC, WSOLA. |
| * Since it is difficult to get the exact value of EXTRA, estimation |
| * is taken to be totally around 30ms + sound device latency. |
| */ |
| est_extra_delay = 30; |
| |
| #if PJMEDIA_SOUND_IMPLEMENTATION!=PJMEDIA_SOUND_NULL_SOUND |
| est_extra_delay += PJMEDIA_SND_DEFAULT_REC_LATENCY + |
| PJMEDIA_SND_DEFAULT_PLAY_LATENCY; |
| #endif |
| |
| sess->stat.rx.voip_mtc.end_sys_delay = (pj_uint16_t) |
| (sess->stat.rx.voip_mtc.rnd_trip_delay / 2 + |
| sess->stat.rx.voip_mtc.jb_nom + |
| est_extra_delay); |
| |
| /* Generate block contents */ |
| r->ssrc = pj_htonl(sess->rtcp_session->peer_ssrc); |
| r->loss_rate = sess->stat.rx.voip_mtc.loss_rate; |
| r->discard_rate = sess->stat.rx.voip_mtc.discard_rate; |
| r->burst_den = sess->stat.rx.voip_mtc.burst_den; |
| r->gap_den = sess->stat.rx.voip_mtc.gap_den; |
| r->burst_dur = pj_htons(sess->stat.rx.voip_mtc.burst_dur); |
| r->gap_dur = pj_htons(sess->stat.rx.voip_mtc.gap_dur); |
| r->rnd_trip_delay = pj_htons(sess->stat.rx.voip_mtc.rnd_trip_delay); |
| r->end_sys_delay = pj_htons(sess->stat.rx.voip_mtc.end_sys_delay); |
| /* signal & noise level encoded in two's complement form */ |
| r->signal_lvl = (pj_uint8_t) |
| ((sess->stat.rx.voip_mtc.signal_lvl >= 0)? |
| sess->stat.rx.voip_mtc.signal_lvl : |
| (sess->stat.rx.voip_mtc.signal_lvl + 256)); |
| r->noise_lvl = (pj_uint8_t) |
| ((sess->stat.rx.voip_mtc.noise_lvl >= 0)? |
| sess->stat.rx.voip_mtc.noise_lvl : |
| (sess->stat.rx.voip_mtc.noise_lvl + 256)); |
| r->rerl = sess->stat.rx.voip_mtc.rerl; |
| r->gmin = sess->stat.rx.voip_mtc.gmin; |
| r->r_factor = sess->stat.rx.voip_mtc.r_factor; |
| r->ext_r_factor = sess->stat.rx.voip_mtc.ext_r_factor; |
| r->mos_lq = sess->stat.rx.voip_mtc.mos_lq; |
| r->mos_cq = sess->stat.rx.voip_mtc.mos_cq; |
| r->rx_config = sess->stat.rx.voip_mtc.rx_config; |
| r->jb_nom = pj_htons(sess->stat.rx.voip_mtc.jb_nom); |
| r->jb_max = pj_htons(sess->stat.rx.voip_mtc.jb_max); |
| r->jb_abs_max = pj_htons(sess->stat.rx.voip_mtc.jb_abs_max); |
| |
| /* Finally */ |
| size += sizeof(pjmedia_rtcp_xr_rb_voip_mtc); |
| pj_gettimeofday(&sess->stat.rx.voip_mtc.update); |
| } |
| |
| /* Add RTCP XR header size */ |
| size += sizeof(sess->pkt.common); |
| |
| /* Set RTCP XR header 'length' to packet size in 32-bit unit minus one */ |
| sess->pkt.common.length = pj_htons((pj_uint16_t)(size/4 - 1)); |
| |
| /* Set the return values */ |
| *rtcp_pkt = (void*) &sess->pkt; |
| *len = size; |
| } |
| |
| |
| void pjmedia_rtcp_xr_rx_rtcp_xr( pjmedia_rtcp_xr_session *sess, |
| const void *pkt, |
| pj_size_t size) |
| { |
| const pjmedia_rtcp_xr_pkt *rtcp_xr = (pjmedia_rtcp_xr_pkt*) pkt; |
| const pjmedia_rtcp_xr_rb_rr_time *rb_rr_time = NULL; |
| const pjmedia_rtcp_xr_rb_dlrr *rb_dlrr = NULL; |
| const pjmedia_rtcp_xr_rb_stats *rb_stats = NULL; |
| const pjmedia_rtcp_xr_rb_voip_mtc *rb_voip_mtc = NULL; |
| const pjmedia_rtcp_xr_rb_header *rb_hdr = (pjmedia_rtcp_xr_rb_header*) |
| rtcp_xr->buf; |
| unsigned pkt_len, rb_len; |
| |
| if (rtcp_xr->common.pt != RTCP_XR) |
| return; |
| |
| pkt_len = pj_ntohs((pj_uint16_t)rtcp_xr->common.length); |
| |
| if ((pkt_len + 1) > (size / 4)) |
| return; |
| |
| /* Parse report rpt_types */ |
| while ((pj_int32_t*)rb_hdr < (pj_int32_t*)pkt + pkt_len) |
| { |
| rb_len = pj_ntohs((pj_uint16_t)rb_hdr->length); |
| |
| /* Just skip any block with length == 0 (no report content) */ |
| if (rb_len) { |
| switch (rb_hdr->bt) { |
| case BT_RR_TIME: |
| rb_rr_time = (pjmedia_rtcp_xr_rb_rr_time*) rb_hdr; |
| break; |
| case BT_DLRR: |
| rb_dlrr = (pjmedia_rtcp_xr_rb_dlrr*) rb_hdr; |
| break; |
| case BT_STATS: |
| rb_stats = (pjmedia_rtcp_xr_rb_stats*) rb_hdr; |
| break; |
| case BT_VOIP_METRICS: |
| rb_voip_mtc = (pjmedia_rtcp_xr_rb_voip_mtc*) rb_hdr; |
| break; |
| default: |
| break; |
| } |
| } |
| rb_hdr = (pjmedia_rtcp_xr_rb_header*) |
| ((pj_int32_t*)rb_hdr + rb_len + 1); |
| } |
| |
| /* Receiving RR Time */ |
| if (rb_rr_time) { |
| /* Save LRR from NTP timestamp of the RR time block report */ |
| sess->rx_lrr = ((pj_ntohl(rb_rr_time->ntp_sec) & 0x0000FFFF) << 16) | |
| ((pj_ntohl(rb_rr_time->ntp_frac) >> 16) & 0xFFFF); |
| |
| /* Calculate RR arrival time for DLRR */ |
| pj_get_timestamp(&sess->rx_lrr_time); |
| |
| TRACE_((sess->name, "Rx RTCP SR: ntp_ts=%p", sess->rx_lrr, |
| (pj_uint32_t)(sess->rx_lrr_time.u64*65536/ |
| sess->rtcp_session->ts_freq.u64))); |
| } |
| |
| /* Receiving DLRR */ |
| if (rb_dlrr) { |
| pj_uint32_t lrr, now, dlrr; |
| pj_uint64_t eedelay; |
| pjmedia_rtcp_ntp_rec ntp; |
| |
| /* LRR is the middle 32bit of NTP. It has 1/65536 second |
| * resolution |
| */ |
| lrr = pj_ntohl(rb_dlrr->item.lrr); |
| |
| /* DLRR is delay since LRR, also in 1/65536 resolution */ |
| dlrr = pj_ntohl(rb_dlrr->item.dlrr); |
| |
| /* Get current time, and convert to 1/65536 resolution */ |
| pjmedia_rtcp_get_ntp_time(sess->rtcp_session, &ntp); |
| now = ((ntp.hi & 0xFFFF) << 16) + (ntp.lo >> 16); |
| |
| /* End-to-end delay is (now-lrr-dlrr) */ |
| eedelay = now - lrr - dlrr; |
| |
| /* Convert end to end delay to usec (keeping the calculation in |
| * 64bit space):: |
| * sess->ee_delay = (eedelay * 1000) / 65536; |
| */ |
| if (eedelay < 4294) { |
| eedelay = (eedelay * 1000000) >> 16; |
| } else { |
| eedelay = (eedelay * 1000) >> 16; |
| eedelay *= 1000; |
| } |
| |
| TRACE_((sess->name, "Rx RTCP XR DLRR: lrr=%p, dlrr=%p (%d:%03dms), " |
| "now=%p, rtt=%p", |
| lrr, dlrr, dlrr/65536, (dlrr%65536)*1000/65536, |
| now, (pj_uint32_t)eedelay)); |
| |
| /* Only save calculation if "now" is greater than lrr, or |
| * otherwise rtt will be invalid |
| */ |
| if (now-dlrr >= lrr) { |
| unsigned rtt = (pj_uint32_t)eedelay; |
| |
| /* Check that eedelay value really makes sense. |
| * We allow up to 30 seconds RTT! |
| */ |
| if (eedelay <= 30 * 1000 * 1000UL) { |
| /* "Normalize" rtt value that is exceptionally high. |
| * For such values, "normalize" the rtt to be three times |
| * the average value. |
| */ |
| if (rtt>((unsigned)sess->stat.rtt.mean*3) && sess->stat.rtt.n!=0) |
| { |
| unsigned orig_rtt = rtt; |
| rtt = (unsigned)sess->stat.rtt.mean*3; |
| PJ_LOG(5,(sess->name, |
| "RTT value %d usec is normalized to %d usec", |
| orig_rtt, rtt)); |
| } |
| |
| TRACE_((sess->name, "RTCP RTT is set to %d usec", rtt)); |
| pj_math_stat_update(&sess->stat.rtt, rtt); |
| } |
| } else { |
| PJ_LOG(5, (sess->name, "Internal RTCP NTP clock skew detected: " |
| "lrr=%p, now=%p, dlrr=%p (%d:%03dms), " |
| "diff=%d", |
| lrr, now, dlrr, dlrr/65536, |
| (dlrr%65536)*1000/65536, |
| dlrr-(now-lrr))); |
| } |
| } |
| |
| /* Receiving Statistics Summary */ |
| if (rb_stats) { |
| pj_uint8_t flags = rb_stats->header.specific; |
| |
| pj_bzero(&sess->stat.tx.stat_sum, sizeof(sess->stat.tx.stat_sum)); |
| |
| /* Range of packets sequence reported in this blocks */ |
| sess->stat.tx.stat_sum.begin_seq = pj_ntohs(rb_stats->begin_seq); |
| sess->stat.tx.stat_sum.end_seq = pj_ntohs(rb_stats->end_seq); |
| |
| /* Get flags of valid fields */ |
| sess->stat.tx.stat_sum.l = (flags & (1 << 7)) != 0; |
| sess->stat.tx.stat_sum.d = (flags & (1 << 6)) != 0; |
| sess->stat.tx.stat_sum.j = (flags & (1 << 5)) != 0; |
| sess->stat.tx.stat_sum.t = (flags & (3 << 3)) != 0; |
| |
| /* Fetch the reports info */ |
| if (sess->stat.tx.stat_sum.l) { |
| sess->stat.tx.stat_sum.lost = pj_ntohl(rb_stats->lost); |
| } |
| |
| if (sess->stat.tx.stat_sum.d) { |
| sess->stat.tx.stat_sum.dup = pj_ntohl(rb_stats->dup); |
| } |
| |
| if (sess->stat.tx.stat_sum.j) { |
| sess->stat.tx.stat_sum.jitter.min = pj_ntohl(rb_stats->jitter_min); |
| sess->stat.tx.stat_sum.jitter.max = pj_ntohl(rb_stats->jitter_max); |
| sess->stat.tx.stat_sum.jitter.mean= pj_ntohl(rb_stats->jitter_mean); |
| pj_math_stat_set_stddev(&sess->stat.tx.stat_sum.jitter, |
| pj_ntohl(rb_stats->jitter_dev)); |
| } |
| |
| if (sess->stat.tx.stat_sum.t) { |
| sess->stat.tx.stat_sum.toh.min = rb_stats->toh_min; |
| sess->stat.tx.stat_sum.toh.max = rb_stats->toh_max; |
| sess->stat.tx.stat_sum.toh.mean= rb_stats->toh_mean; |
| pj_math_stat_set_stddev(&sess->stat.tx.stat_sum.toh, |
| pj_ntohl(rb_stats->toh_dev)); |
| } |
| |
| pj_gettimeofday(&sess->stat.tx.stat_sum.update); |
| } |
| |
| /* Receiving VoIP Metrics */ |
| if (rb_voip_mtc) { |
| sess->stat.tx.voip_mtc.loss_rate = rb_voip_mtc->loss_rate; |
| sess->stat.tx.voip_mtc.discard_rate = rb_voip_mtc->discard_rate; |
| sess->stat.tx.voip_mtc.burst_den = rb_voip_mtc->burst_den; |
| sess->stat.tx.voip_mtc.gap_den = rb_voip_mtc->gap_den; |
| sess->stat.tx.voip_mtc.burst_dur = pj_ntohs(rb_voip_mtc->burst_dur); |
| sess->stat.tx.voip_mtc.gap_dur = pj_ntohs(rb_voip_mtc->gap_dur); |
| sess->stat.tx.voip_mtc.rnd_trip_delay = |
| pj_ntohs(rb_voip_mtc->rnd_trip_delay); |
| sess->stat.tx.voip_mtc.end_sys_delay = |
| pj_ntohs(rb_voip_mtc->end_sys_delay); |
| /* signal & noise level encoded in two's complement form */ |
| sess->stat.tx.voip_mtc.signal_lvl = (pj_int8_t) |
| ((rb_voip_mtc->signal_lvl > 127)? |
| ((int)rb_voip_mtc->signal_lvl - 256) : |
| rb_voip_mtc->signal_lvl); |
| sess->stat.tx.voip_mtc.noise_lvl = (pj_int8_t) |
| ((rb_voip_mtc->noise_lvl > 127)? |
| ((int)rb_voip_mtc->noise_lvl - 256) : |
| rb_voip_mtc->noise_lvl); |
| sess->stat.tx.voip_mtc.rerl = rb_voip_mtc->rerl; |
| sess->stat.tx.voip_mtc.gmin = rb_voip_mtc->gmin; |
| sess->stat.tx.voip_mtc.r_factor = rb_voip_mtc->r_factor; |
| sess->stat.tx.voip_mtc.ext_r_factor = rb_voip_mtc->ext_r_factor; |
| sess->stat.tx.voip_mtc.mos_lq = rb_voip_mtc->mos_lq; |
| sess->stat.tx.voip_mtc.mos_cq = rb_voip_mtc->mos_cq; |
| sess->stat.tx.voip_mtc.rx_config = rb_voip_mtc->rx_config; |
| sess->stat.tx.voip_mtc.jb_nom = pj_ntohs(rb_voip_mtc->jb_nom); |
| sess->stat.tx.voip_mtc.jb_max = pj_ntohs(rb_voip_mtc->jb_max); |
| sess->stat.tx.voip_mtc.jb_abs_max = pj_ntohs(rb_voip_mtc->jb_abs_max); |
| |
| pj_gettimeofday(&sess->stat.tx.voip_mtc.update); |
| } |
| } |
| |
| /* Place seq into a 32-bit sequence number space based upon a |
| * heuristic for its most likely location. |
| */ |
| static pj_uint32_t extend_seq(pjmedia_rtcp_xr_session *sess, |
| const pj_uint16_t seq) |
| { |
| |
| pj_uint32_t extended_seq, seq_a, seq_b, diff_a, diff_b; |
| if(sess->uninitialized_src_ref_seq) { |
| /* This is the first sequence number received. Place |
| * it in the middle of the extended sequence number |
| * space. |
| */ |
| sess->src_ref_seq = seq | 0x80000000u; |
| sess->uninitialized_src_ref_seq = PJ_FALSE; |
| extended_seq = sess->src_ref_seq; |
| } else { |
| /* Prior sequence numbers have been received. |
| * Propose two candidates for the extended sequence |
| * number: seq_a is without wraparound, seq_b with |
| * wraparound. |
| */ |
| seq_a = seq | (sess->src_ref_seq & 0xFFFF0000u); |
| if(sess->src_ref_seq < seq_a) { |
| seq_b = seq_a - 0x00010000u; |
| diff_a = seq_a - sess->src_ref_seq; |
| diff_b = sess->src_ref_seq - seq_b; |
| } else { |
| seq_b = seq_a + 0x00010000u; |
| diff_a = sess->src_ref_seq - seq_a; |
| diff_b = seq_b - sess->src_ref_seq; |
| } |
| |
| /* Choose the closer candidate. If they are equally |
| * close, the choice is somewhat arbitrary: we choose |
| * the candidate for which no rollover is necessary. |
| */ |
| if(diff_a < diff_b) { |
| extended_seq = seq_a; |
| } else { |
| extended_seq = seq_b; |
| } |
| |
| /* Set the reference sequence number to be this most |
| * recently-received sequence number. |
| */ |
| sess->src_ref_seq = extended_seq; |
| } |
| |
| /* Return our best guess for a 32-bit sequence number that |
| * corresponds to the 16-bit number we were given. |
| */ |
| return extended_seq; |
| } |
| |
| void pjmedia_rtcp_xr_rx_rtp( pjmedia_rtcp_xr_session *sess, |
| unsigned seq, |
| int lost, |
| int dup, |
| int discarded, |
| int jitter, |
| int toh, pj_bool_t toh_ipv4) |
| { |
| pj_uint32_t ext_seq; |
| |
| /* Get 32 bit version of sequence */ |
| ext_seq = extend_seq(sess, (pj_uint16_t)seq); |
| |
| /* Update statistics summary */ |
| sess->stat.rx.stat_sum.count++; |
| |
| if (sess->stat.rx.stat_sum.begin_seq == 0 || |
| sess->stat.rx.stat_sum.begin_seq > ext_seq) |
| { |
| sess->stat.rx.stat_sum.begin_seq = ext_seq; |
| } |
| |
| if (sess->stat.rx.stat_sum.end_seq == 0 || |
| sess->stat.rx.stat_sum.end_seq < ext_seq) |
| { |
| sess->stat.rx.stat_sum.end_seq = ext_seq; |
| } |
| |
| if (lost >= 0) { |
| sess->stat.rx.stat_sum.l = PJ_TRUE; |
| if (lost > 0) |
| sess->stat.rx.stat_sum.lost++; |
| } |
| |
| if (dup >= 0) { |
| sess->stat.rx.stat_sum.d = PJ_TRUE; |
| if (dup > 0) |
| sess->stat.rx.stat_sum.dup++; |
| } |
| |
| if (jitter >= 0) { |
| sess->stat.rx.stat_sum.j = PJ_TRUE; |
| pj_math_stat_update(&sess->stat.rx.stat_sum.jitter, jitter); |
| } |
| |
| if (toh >= 0) { |
| sess->stat.rx.stat_sum.t = toh_ipv4? 1 : 2; |
| pj_math_stat_update(&sess->stat.rx.stat_sum.toh, toh); |
| } |
| |
| /* Update burst metrics. |
| * There are two terms introduced in the RFC 3611: gap & burst. |
| * Gap represents good stream condition, lost+discard rate <= 1/Gmin. |
| * Burst represents the opposite, lost+discard rate > 1/Gmin. |
| */ |
| if (lost >= 0 && discarded >= 0) { |
| if(lost > 0) { |
| sess->voip_mtc_stat.loss_count++; |
| } |
| if(discarded > 0) { |
| sess->voip_mtc_stat.discard_count++; |
| } |
| if(!lost && !discarded) { |
| /* Number of good packets since last lost/discarded */ |
| sess->voip_mtc_stat.pkt++; |
| } |
| else { |
| if(sess->voip_mtc_stat.pkt >= sess->stat.rx.voip_mtc.gmin) { |
| /* Gap condition */ |
| if(sess->voip_mtc_stat.lost == 1) { |
| /* Gap -> Gap */ |
| sess->voip_mtc_stat.c14++; |
| } |
| else { |
| /* Burst -> Gap */ |
| sess->voip_mtc_stat.c13++; |
| } |
| sess->voip_mtc_stat.lost = 1; |
| sess->voip_mtc_stat.c11 += sess->voip_mtc_stat.pkt; |
| } |
| else { |
| /* Burst condition */ |
| sess->voip_mtc_stat.lost++; |
| if(sess->voip_mtc_stat.pkt == 0) { |
| /* Consecutive losts */ |
| sess->voip_mtc_stat.c33++; |
| } |
| else { |
| /* Any good packets, but still bursting */ |
| sess->voip_mtc_stat.c23++; |
| sess->voip_mtc_stat.c22 += (sess->voip_mtc_stat.pkt - 1); |
| } |
| } |
| |
| sess->voip_mtc_stat.pkt = 0; |
| } |
| } |
| } |
| |
| void pjmedia_rtcp_xr_tx_rtp( pjmedia_rtcp_xr_session *session, |
| unsigned ptsize ) |
| { |
| PJ_UNUSED_ARG(session); |
| PJ_UNUSED_ARG(ptsize); |
| } |
| |
| PJ_DEF(pj_status_t) pjmedia_rtcp_xr_update_info( |
| pjmedia_rtcp_xr_session *sess, |
| unsigned info, |
| pj_int32_t val) |
| { |
| int v = val; |
| |
| switch(info) { |
| case PJMEDIA_RTCP_XR_INFO_SIGNAL_LVL: |
| sess->stat.rx.voip_mtc.signal_lvl = (pj_int8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_NOISE_LVL: |
| sess->stat.rx.voip_mtc.noise_lvl = (pj_int8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_RERL: |
| sess->stat.rx.voip_mtc.rerl = (pj_uint8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_R_FACTOR: |
| sess->stat.rx.voip_mtc.ext_r_factor = (pj_uint8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_MOS_LQ: |
| sess->stat.rx.voip_mtc.mos_lq = (pj_uint8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_MOS_CQ: |
| sess->stat.rx.voip_mtc.mos_cq = (pj_uint8_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_CONF_PLC: |
| if (v >= 0 && v <= 3) { |
| sess->stat.rx.voip_mtc.rx_config &= 0x3F; |
| sess->stat.rx.voip_mtc.rx_config |= (pj_uint8_t) (v << 6); |
| } |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_CONF_JBA: |
| if (v >= 0 && v <= 3) { |
| sess->stat.rx.voip_mtc.rx_config &= 0xCF; |
| sess->stat.rx.voip_mtc.rx_config |= (pj_uint8_t) (v << 4); |
| } |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_CONF_JBR: |
| if (v >= 0 && v <= 15) { |
| sess->stat.rx.voip_mtc.rx_config &= 0xF0; |
| sess->stat.rx.voip_mtc.rx_config |= (pj_uint8_t) v; |
| } |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_JB_NOM: |
| sess->stat.rx.voip_mtc.jb_nom = (pj_uint16_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_JB_MAX: |
| sess->stat.rx.voip_mtc.jb_max = (pj_uint16_t) v; |
| break; |
| |
| case PJMEDIA_RTCP_XR_INFO_JB_ABS_MAX: |
| sess->stat.rx.voip_mtc.jb_abs_max = (pj_uint16_t) v; |
| break; |
| |
| default: |
| return PJ_EINVAL; |
| } |
| |
| return PJ_SUCCESS; |
| } |
| |
| #endif |