On Thu, 2 Sep 2010, Raymond Yau wrote: > 2010/8/12 Jaroslav Kysela <perex@xxxxxxxx> > >> On Thu, 12 Aug 2010, Raymond Yau wrote: >> >>> >>> BTW , it seem this patch change the behaviour of alsa-lib too. >>> >>> all sound cards will now have a minperiodtime 5000 >>> >> >> Nope. If application settles the period time/size, the behaviour is >> unchanged (see the min/max condition). We just want to limit the period >> sizes for applications which do not know what they are doing and allow any >> period time/sizes. It's better to limit the minimal period size to avoid >> generation of many interrupts per second in this case. >> >> > This mean that if application did not set sample rate by using > snd_pcm_hw_params_set_rate_near() , alsa-lib will select default rate > (minimum rate of 1 Hz for alsa-pulse plugin ) > > err = snd_pcm_ioplug_set_param_minmax(io, SND_PCM_IOPLUG_HW_RATE, > 1, PA_RATE_MAX); > > > This kind of application cause PA server aborted immediately in Fedora 10 > and Fedora 13 The alsa-pulse plugin should provide valid accepted rate range. It's not issue in alsa-lib. I would set the low limit to something like 5000Hz. 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
