[Linphone-developers] WINSND overrun

[Sven Westergren]

Hi all,

 

We’re having issues with sound buffer overruns on some (rather old) computers. When this happens mediastreamer tries to reset the card but it doesn’t start to play afterwards because nbufs_playing never hits 0.

It’s somewhat difficult to reproduce so I have been trying to analyze the relevant code (winsnd3.c, winsnd_write_process(…) ) and I believe that there’s a missing break statement after line 618.

 

lines 613-619:

}else{

    /* no more free wavheader, overrun !*/

    ms_warning("WINSND overrun, restarting");

    d->overrun=TRUE;

    d->nsamples=0;

    waveOutReset(d->outdev);

}

 

Since there’s no break at the end of this else-clause the enclosing loop will continue and subsequent iteration will do a playout_buf() on an occupied wavheader.

Can someone confirm or refute my suspicions?

 

Best regards

Sven Westergren

nWise Ab