From 469d4554bdb830e1006ea6f6412bb8e597e257d5 Mon Sep 17 00:00:00 2001 From: dvossel Date: Wed, 8 Jul 2009 23:15:54 +0000 Subject: Fixes 8khz assumptions Many calculations assume 8khz is the codec rate. This is not always the case. This patch only addresses chan_iax.c and res_rtp_asterisk.c, but I am sure there are other areas that make this assumption as well. Review: https://reviewboard.asterisk.org/r/306/ git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.4@205471 f38db490-d61c-443f-a65b-d21fe96a405b --- main/rtp.c | 45 ++++++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 21 deletions(-) (limited to 'main/rtp.c') diff --git a/main/rtp.c b/main/rtp.c index 3da4ceb96..c1dc445b7 100644 --- a/main/rtp.c +++ b/main/rtp.c @@ -524,6 +524,11 @@ int ast_rtcp_fd(struct ast_rtp *rtp) return -1; } +static int rtp_get_rate(int subclass) +{ + return (subclass == AST_FORMAT_G722) ? 8000 : ast_format_rate(subclass); +} + unsigned int ast_rtcp_calc_interval(struct ast_rtp *rtp) { unsigned int interval; @@ -771,7 +776,7 @@ static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *dat if ((rtp->lastevent != seqno) && rtp->resp) { rtp->dtmf_duration = new_duration; f = send_dtmf(rtp, AST_FRAME_DTMF_END); - f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, 8000), ast_tv(0, 0)); + f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, rtp_get_rate(f->subclass)), ast_tv(0, 0)); rtp->resp = 0; rtp->dtmf_duration = rtp->dtmf_timeout = 0; } @@ -781,7 +786,7 @@ static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *dat if (rtp->resp && rtp->resp != resp) { /* Another digit already began. End it */ f = send_dtmf(rtp, AST_FRAME_DTMF_END); - f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, 8000), ast_tv(0, 0)); + f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, rtp_get_rate(f->subclass)), ast_tv(0, 0)); rtp->resp = 0; rtp->dtmf_duration = rtp->dtmf_timeout = 0; } @@ -1047,14 +1052,15 @@ static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int t double d; double dtv; double prog; - + int rate = rtp_get_rate(rtp->f.subclass); + if ((!rtp->rxcore.tv_sec && !rtp->rxcore.tv_usec) || mark) { gettimeofday(&rtp->rxcore, NULL); rtp->drxcore = (double) rtp->rxcore.tv_sec + (double) rtp->rxcore.tv_usec / 1000000; /* map timestamp to a real time */ rtp->seedrxts = timestamp; /* Their RTP timestamp started with this */ - rtp->rxcore.tv_sec -= timestamp / 8000; - rtp->rxcore.tv_usec -= (timestamp % 8000) * 125; + rtp->rxcore.tv_sec -= timestamp / rate; + rtp->rxcore.tv_usec -= (timestamp % rate) * 125; /* Round to 0.1ms for nice, pretty timestamps */ rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 100; if (rtp->rxcore.tv_usec < 0) { @@ -1066,13 +1072,13 @@ static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int t gettimeofday(&now,NULL); /* rxcore is the mapping between the RTP timestamp and _our_ real time from gettimeofday() */ - tv->tv_sec = rtp->rxcore.tv_sec + timestamp / 8000; - tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % 8000) * 125; + tv->tv_sec = rtp->rxcore.tv_sec + timestamp / rate; + tv->tv_usec = rtp->rxcore.tv_usec + (timestamp % rate) * 125; if (tv->tv_usec >= 1000000) { tv->tv_usec -= 1000000; tv->tv_sec += 1; } - prog = (double)((timestamp-rtp->seedrxts)/8000.); + prog = (double)((timestamp-rtp->seedrxts)/(float)(rate)); dtv = (double)rtp->drxcore + (double)(prog); current_time = (double)now.tv_sec + (double)now.tv_usec/1000000; transit = current_time - dtv; @@ -1340,7 +1346,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp) if (rtp->resp) { struct ast_frame *f; f = send_dtmf(rtp, AST_FRAME_DTMF_END); - f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, 8000), ast_tv(0, 0)); + f->len = ast_tvdiff_ms(ast_samp2tv(rtp->dtmf_duration, rtp_get_rate(f->subclass)), ast_tv(0, 0)); rtp->resp = 0; rtp->dtmf_timeout = rtp->dtmf_duration = 0; return f; @@ -1362,7 +1368,7 @@ struct ast_frame *ast_rtp_read(struct ast_rtp *rtp) calc_rxstamp(&rtp->f.delivery, rtp, timestamp, mark); /* Add timing data to let ast_generic_bridge() put the frame into a jitterbuf */ ast_set_flag(&rtp->f, AST_FRFLAG_HAS_TIMING_INFO); - rtp->f.ts = timestamp / 8; + rtp->f.ts = timestamp / (rtp_get_rate(rtp->f.subclass) / 1000); rtp->f.len = rtp->f.samples / (ast_format_rate(rtp->f.subclass) / 1000); } else { /* Video -- samples is # of samples vs. 90000 */ @@ -2678,6 +2684,12 @@ static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec unsigned int ms; int pred; int mark = 0; + int rate = rtp_get_rate(f->subclass) / 1000; + + if (f->subclass == AST_FORMAT_G722) { + /* G722 is silllllllllllllllllly */ + f->samples /= 2; + } if (rtp->sending_digit) { return 0; @@ -2689,7 +2701,7 @@ static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec pred = rtp->lastts + f->samples; /* Re-calculate last TS */ - rtp->lastts = rtp->lastts + ms * 8; + rtp->lastts = rtp->lastts + ms * rate; if (ast_tvzero(f->delivery)) { /* If this isn't an absolute delivery time, Check if it is close to our prediction, and if so, go with our prediction */ @@ -2732,7 +2744,7 @@ static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec rtp->lastdigitts = rtp->lastts; if (ast_test_flag(f, AST_FRFLAG_HAS_TIMING_INFO)) - rtp->lastts = f->ts * 8; + rtp->lastts = f->ts * rate; /* Get a pointer to the header */ rtpheader = (unsigned char *)(f->data - hdrlen); @@ -2898,11 +2910,6 @@ int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f) } while ((f = ast_smoother_read(rtp->smoother)) && (f->data)) { - if (f->subclass == AST_FORMAT_G722) { - /* G.722 is silllllllllllllly */ - f->samples /= 2; - } - ast_rtp_raw_write(rtp, f, codec); } } else { @@ -2913,10 +2920,6 @@ int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *_f) f = _f; } if (f->data) { - if (f->subclass == AST_FORMAT_G722) { - /* G.722 is silllllllllllllly */ - f->samples /= 2; - } ast_rtp_raw_write(rtp, f, codec); } if (f != _f) -- cgit v1.2.3