[Asterisk-Users] Codec Voodoo: piece of evidence: probable fix

[Rich Adamson]

FWIW, the fix below applies to cvs (not Stable). The stable version of this
is very different. Looks like Stable hasn't been updated for some time.


> 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;
> }
>