pl bossart wrote: > When PulseAudio is used and all PCM is routed through PulseAudio > (Fedora, Meego, etc), the notion of ALSA periods isn't very useful. > So why not disable them entirely to reduce the number of wakeups? ... > There are probably some cases where you don't want this type of > behavior (broken hardware, legacy code with multiple-buffering, > disabled timer in PulseAudio), It's interesting that all ALSA applications except PA are "legacy". :) > so I think it would make sense to request the disabling of interrupts > when hw_params are set, since this is also the time when period sizes > are set. Yes. For compatibility with the existing ALSA API, this needs to be a flag that is not enabled by default. > I am aware that some changes would be needed in pcm_lib.c, where all > the error checks are done. Plus all the API changes in the ALSA kernel framework, the ALSA kernel/ userspace interface, and the alsa-lib interface. I'll see if I can get this done over the weekend ... Regards, Clemens
