Akio wrote: > Clemens Ladisch <cladisch <at> fastmail.net> writes: > > Akio wrote: > > > Clemens Ladisch <cladisch <at> fastmail.net> writes: > > > > I would have guessed that some 32-bit counter has overflowed, but at > > > > 48 kHz, a frame counter would overflow after slightly less than > > > > 25 hours. > > > > > > Thanks for Clemens. Could you tell me the counter's name and which layer does it? > > > in alsa driver or in alsa lib or in alsa core module? > > > > I'm not aware of any such bug in the ALSA framework. I'd guess this is > > some problem with your driver. > > > > What sample frequency are you using? > > in my case, the sampling rate is 16k, At 16 kHz, a 32-bit counter overflows after about 74.5 hours. > what is the unit of the counter? period counts or samples? I do not know what counter this could be. I'm just guessing that _some_ counter overflows; this would fit the symptoms you've described. > > > snd_pcm_prepare does not work. > > > > What error does it return? > > I use strerr to get the error message, and it tell me "Input/Output > Error" This error code is returned by the driver. Which driver are you using? Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
