On Wed, 14 Jul 2010, David Henningsson wrote: > 2010-07-14 13:13, Raymond Yau skrev: > >> localhost pulseaudio[24553]: alsa-util.c: appl_ptr : 735801008 >> localhost pulseaudio[24553]: alsa-util.c: hw_ptr : 735846184 >> >> This is underrun as you can see appl_ptr is behing hw_ptr > > Ehm, isn't that a ring buffer? I e, there is nothing wrong with appl_ptr > being less than hw_ptr. For playback, if appl_ptr is less than hw_ptr, it's underrun situation (application didn't feed samples in time to the driver's ring buffer). Note that pointers in ALSA are in range 0..boundary not 0..ring_buffer_size (boundary is near LONG_MAX value) - it's design to detect such situations (underrun, overrun). Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
