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Merge Steven Davie's timestamp improvements

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3361 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2004-06-30 06:03:57 +00:00
parent 7be9c6e469
commit 1f1c915fea
2 changed files with 53 additions and 17 deletions
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60
channels/chan_iax2.c
View File

@@ -119,7 +119,9 @@ static int ping_time = 20;
static int lagrq_time = 10;
static int maxtrunkcall = TRUNK_CALL_START;
static int maxnontrunkcall = 1;
static int maxjitterbuffer=3000;
static int maxjitterbuffer=1000;
static int minjitterbuffer=10;
static int jittershrinkrate=2;
static int trunkfreq = 20;
static int authdebug = 1;
static int iaxcompat = 0;
@@ -1595,12 +1597,21 @@ static unsigned int calc_fakestamp(struct chan_iax2_pvt *from, struct chan_iax2_
static int forward_delivery(struct iax_frame *fr)
{
struct chan_iax2_pvt *p1, *p2;
char tmp[80];
p1 = iaxs[fr->callno];
p2 = iaxs[p1->bridgecallno];
if (!p1)
return -1;
if (!p2)
return -1;
if (option_debug)
ast_log(LOG_DEBUG, "forward_delivery: Forwarding ts=%d on %d/%d to %d/%d on %s:%d\n",
fr->ts,
p1->callno, p1->peercallno,
p2->callno, p2->peercallno,
ast_inet_ntoa(tmp, sizeof(tmp), p2->addr.sin_addr), ntohs(p2->addr.sin_port));
/* Fix relative timestamp */
fr->ts = calc_fakestamp(p1, p2, fr->ts);
/* Now just send it send on the 2nd one
@@ -1701,7 +1712,7 @@ static int schedule_delivery(struct iax_frame *fr, int reallydeliver, int update
/* If our jitter buffer is too big (by a significant margin), then we slowly
shrink it by about 1 ms each time to avoid letting the change be perceived */
if (max < iaxs[fr->callno]->jitterbuffer - max_jitter_buffer)
iaxs[fr->callno]->jitterbuffer -= 2;
iaxs[fr->callno]->jitterbuffer -= jittershrinkrate;
#if 1
@@ -2590,7 +2601,8 @@ static unsigned int calc_txpeerstamp(struct iax2_trunk_peer *tpeer, int sampms,
long int ms, pred;
tpeer->trunkact = *tv;
mssincetx = (tv->tv_sec - tpeer->lasttxtime.tv_sec) * 1000 + (tv->tv_usec - tpeer->lasttxtime.tv_usec) / 1000;
mssincetx = (tv->tv_sec - tpeer->lasttxtime.tv_sec) * 1000 +
(1000000 + tv->tv_usec - tpeer->lasttxtime.tv_usec) / 1000 - 1000;
if (mssincetx > 5000 || (!tpeer->txtrunktime.tv_sec && !tpeer->txtrunktime.tv_usec)) {
/* If it's been at least 5 seconds since the last time we transmitted on this trunk, reset our timers */
tpeer->txtrunktime.tv_sec = tv->tv_sec;
@@ -2602,7 +2614,8 @@ static unsigned int calc_txpeerstamp(struct iax2_trunk_peer *tpeer, int sampms,
tpeer->lasttxtime.tv_usec = tv->tv_usec;
/* Calculate ms offset */
ms = (tv->tv_sec - tpeer->txtrunktime.tv_sec) * 1000 + (tv->tv_usec - tpeer->txtrunktime.tv_usec) / 1000;
ms = (tv->tv_sec - tpeer->txtrunktime.tv_sec) * 1000 +
(1000000 + tv->tv_usec - tpeer->txtrunktime.tv_usec) / 1000 - 1000;
/* Predict from last value */
pred = tpeer->lastsent + sampms;
if (abs(ms - pred) < MAX_TIMESTAMP_SKEW)
@@ -2621,12 +2634,12 @@ static unsigned int fix_peerts(struct timeval *tv, int callno, unsigned int ts)
if (!iaxs[callno]->rxcore.tv_sec && !iaxs[callno]->rxcore.tv_usec) {
/* Initialize rxcore time if appropriate */
gettimeofday(&iaxs[callno]->rxcore, NULL);
/* Round to nearest 20ms */
/* Round to nearest 20ms so traces look pretty */
iaxs[callno]->rxcore.tv_usec -= iaxs[callno]->rxcore.tv_usec % 20000;
}
/* Calculate difference between trunk and channel */
ms = (tv->tv_sec - iaxs[callno]->rxcore.tv_sec) * 1000 +
(tv->tv_usec - iaxs[callno]->rxcore.tv_usec) / 1000;
(1000000 + tv->tv_usec - iaxs[callno]->rxcore.tv_usec) / 1000 - 1000;
/* Return as the sum of trunk time and the difference between trunk and real time */
return ms + ts;
}
@@ -2655,7 +2668,7 @@ static unsigned int calc_timestamp(struct chan_iax2_pvt *p, unsigned int ts, str
}
if (!p->offset.tv_sec && !p->offset.tv_usec) {
gettimeofday(&p->offset, NULL);
/* Round to nearest 20ms */
/* Round to nearest 20ms for nice looking traces */
p->offset.tv_usec -= p->offset.tv_usec % 20000;
}
/* If the timestamp is specified, just send it as is */
@@ -2663,10 +2676,12 @@ static unsigned int calc_timestamp(struct chan_iax2_pvt *p, unsigned int ts, str
return ts;
/* If we have a time that the frame arrived, always use it to make our timestamp */
if (delivery && (delivery->tv_sec || delivery->tv_usec)) {
ms = (delivery->tv_sec - p->offset.tv_sec) * 1000 + (delivery->tv_usec - p->offset.tv_usec) / 1000;
ms = (delivery->tv_sec - p->offset.tv_sec) * 1000 +
(1000000 + delivery->tv_usec - p->offset.tv_usec) / 1000 - 1000;
} else {
gettimeofday(&tv, NULL);
ms = (tv.tv_sec - p->offset.tv_sec) * 1000 + (tv.tv_usec - p->offset.tv_usec) / 1000;
ms = (tv.tv_sec - p->offset.tv_sec) * 1000 +
(1000000 + tv.tv_usec - p->offset.tv_usec) / 1000 - 1000;
if (ms < 0)
ms = 0;
if (voice) {
@@ -2720,7 +2735,8 @@ static unsigned int calc_fakestamp(struct chan_iax2_pvt *p1, struct chan_iax2_pv
Adding rxcore to it gives us when we would want the packet to be delivered normally.
Subtracting txcore of the outgoing channel gives us what we'd expect */
ms = (p1->rxcore.tv_sec - p2->offset.tv_sec) * 1000 + (p1->rxcore.tv_usec - p2->offset.tv_usec) / 1000;
ms = (p1->rxcore.tv_sec - p2->offset.tv_sec) * 1000 +
(1000000 + p1->rxcore.tv_usec - p2->offset.tv_usec) / 1000 - 1000;
fakets += ms;
if (fakets <= p2->lastsent)
fakets = p2->lastsent + 1;
@@ -2739,7 +2755,8 @@ static unsigned int calc_rxstamp(struct chan_iax2_pvt *p)
gettimeofday(&p->rxcore, NULL);
gettimeofday(&tv, NULL);
ms = (tv.tv_sec - p->rxcore.tv_sec) * 1000 + (tv.tv_usec - p->rxcore.tv_usec) / 1000;
ms = (tv.tv_sec - p->rxcore.tv_sec) * 1000 +
(1000000 + tv.tv_usec - p->rxcore.tv_usec) / 1000 - 1000;
return ms;
}
@@ -3147,16 +3164,26 @@ static int iax2_show_registry(int fd, int argc, char *argv[])
#undef FORMAT2
}
static int jitterbufsize(struct chan_iax2_pvt *pvt) {
int min, i;
min = 99999999;
for (i=0; i<MEMORY_SIZE; i++) {
if (pvt->history[i] < min)
min = pvt->history[i];
}
return pvt->jitterbuffer - min;
}
static int iax2_show_channels(int fd, int argc, char *argv[])
{
#define FORMAT2 "%-15.15s %-10.10s %-11.11s %-11.11s %-7.7s %-6.6s %s\n"
#define FORMAT "%-15.15s %-10.10s %5.5d/%5.5d %5.5d/%5.5d %-5.5dms %-4.4dms %-6.6s\n"
#define FORMAT2 "%-15.15s %-10.10s %-11.11s %-11.11s %-7.7s %-6.6s %-6.6s %s\n"
#define FORMAT "%-15.15s %-10.10s %5.5d/%5.5d %5.5d/%5.5d %-5.5dms %-4.4dms %-4.4dms %-6.6s\n"
int x;
int numchans = 0;
char iabuf[80];
if (argc != 3)
return RESULT_SHOWUSAGE;
ast_cli(fd, FORMAT2, "Peer", "Username", "ID (Lo/Rem)", "Seq (Tx/Rx)", "Lag", "Jitter", "Format");
ast_cli(fd, FORMAT2, "Peer", "Username", "ID (Lo/Rem)", "Seq (Tx/Rx)", "Lag", "Jitter", "JitBuf", "Format");
for (x=0;x<IAX_MAX_CALLS;x++) {
ast_mutex_lock(&iaxsl[x]);
if (iaxs[x]) {
@@ -3166,6 +3193,7 @@ static int iax2_show_channels(int fd, int argc, char *argv[])
iaxs[x]->oseqno, iaxs[x]->iseqno,
iaxs[x]->lag,
iaxs[x]->jitter,
jitterbufsize(iaxs[x]),
ast_getformatname(iaxs[x]->voiceformat) );
numchans++;
}
@@ -6380,6 +6408,10 @@ static int set_config(char *config_file, struct sockaddr_in* sin){
ping_time = atoi(v->value);
else if (!strcasecmp(v->name, "maxjitterbuffer"))
maxjitterbuffer = atoi(v->value);
else if (!strcasecmp(v->name, "minjitterbuffer"))
minjitterbuffer = atoi(v->value);
else if (!strcasecmp(v->name, "jittershrinkrate"))
jittershrinkrate = atoi(v->value);
else if (!strcasecmp(v->name, "maxexcessbuffer"))
max_jitter_buffer = atoi(v->value);
else if (!strcasecmp(v->name, "lagrqtime"))

10
rtp.c
View File

@@ -38,6 +38,8 @@
#include <asterisk/lock.h>
#include <asterisk/utils.h>
#define MAX_TIMESTAMP_SKEW 640
#define RTP_MTU 1200
#define TYPE_HIGH 0x0
@@ -380,6 +382,7 @@ static void calc_rxstamp(struct timeval *tv, struct ast_rtp *rtp, unsigned int t
gettimeofday(&rtp->rxcore, NULL);
rtp->rxcore.tv_sec -= timestamp / 8000;
rtp->rxcore.tv_usec -= (timestamp % 8000) * 125;
/* Round to 20ms for nice, pretty timestamps */
rtp->rxcore.tv_usec -= rtp->rxcore.tv_usec % 20000;
if (rtp->rxcore.tv_usec < 0) {
/* Adjust appropriately if necessary */
@@ -919,18 +922,19 @@ static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery)
unsigned int ms;
if (!rtp->txcore.tv_sec && !rtp->txcore.tv_usec) {
gettimeofday(&rtp->txcore, NULL);
/* Round to 20ms for nice, pretty timestamps */
rtp->txcore.tv_usec -= rtp->txcore.tv_usec % 20000;
}
if (delivery && (delivery->tv_sec || delivery->tv_usec)) {
/* Use previous txcore */
ms = (delivery->tv_sec - rtp->txcore.tv_sec) * 1000;
ms += (delivery->tv_usec - rtp->txcore.tv_usec) / 1000;
ms += (1000000 + delivery->tv_usec - rtp->txcore.tv_usec) / 1000 - 1000;
rtp->txcore.tv_sec = delivery->tv_sec;
rtp->txcore.tv_usec = delivery->tv_usec;
} else {
gettimeofday(&now, NULL);
ms = (now.tv_sec - rtp->txcore.tv_sec) * 1000;
ms += (now.tv_usec - rtp->txcore.tv_usec) / 1000;
ms += (1000000 + now.tv_usec - rtp->txcore.tv_usec) / 1000 - 1000;
/* Use what we just got for next time */
rtp->txcore.tv_sec = now.tv_sec;
rtp->txcore.tv_usec = now.tv_usec;
@@ -1058,7 +1062,7 @@ static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec
if (!f->delivery.tv_sec && !f->delivery.tv_usec) {
/* If this isn't an absolute delivery time, Check if it is close to our prediction,
and if so, go with our prediction */
if (abs(rtp->lastts - pred) < 640)
if (abs(rtp->lastts - pred) < MAX_TIMESTAMP_SKEW)
rtp->lastts = pred;
else {
ast_log(LOG_DEBUG, "Difference is %d, ms is %d\n", abs(rtp->lastts - pred), ms);