I did report this to Mark Spencer a few days ago. Look at my last comment in bug: http://bugs.digium.com/bug_view_page.php?bug_id=0001260
Maybe you can open up a bug report and provide your solution.
Ray Burkholder wrote:
static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval
*delivery)
{
struct timeval now;
unsigned int ms;
if (!rtp->txcore.tv_sec && !rtp->txcore.tv_usec) {
gettimeofday(&rtp->txcore, NULL);
}
gettimeofday(&now, NULL);
ms = (now.tv_sec - rtp->txcore.tv_sec) * 1000;
ms += (now.tv_usec - rtp->txcore.tv_usec) / 1000;
/* Use what we just got for next time */
rtp->txcore.tv_sec = now.tv_sec;
rtp->txcore.tv_usec = now.tv_usec;
return ms;
}
This snippet is from old code. Here is a corrected new snippet with proper rounding that I think fixes the issue (the two lines are marked [sorry didn't think to do a diff until afterwards]):
static unsigned int calc_txstamp(struct ast_rtp *rtp, struct timeval *delivery) { struct timeval now; unsigned int ms; if (!rtp->txcore.tv_sec && !rtp->txcore.tv_usec) { gettimeofday(&rtp->txcore, NULL); 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) + 500) / 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) + 500 ) / 1000; /* Use what we just got for next time */ rtp->txcore.tv_sec = now.tv_sec; rtp->txcore.tv_usec = now.tv_usec; } return ms; }
-- Andres Network Admin http://www.telesip.net
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