2010/7/10 David Henningsson <launchpad.web@xxxxxxxxxxxxxx> > > > > PA developer often complain the driver did not provide accurate playback > > position by the pcm_pointer callback > > > > Did the pulse_pointer callback also provide accurate position of the > pulse > > device ? > > Yes, but it provides the pointer to the fake ring buffer (the alsa-lib > plugin system expects that all pcm plugins are ring buffers, which seems > to me like a design flaw). > > This mean that pulse_pointer jump suddenly when PA wake up from sleep and write audio to sound card until the ring buffer is empty, Those "0 bytes in queue " message is the result of PA server flush the ring buffer. Did alsa-lib regard this condition as underrun, since the application pointer and hardware pointer of the pulse device seem at the same point ? Is this the reason why alsa-time-test.c fail on the pulse device ? _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
