Jean-Yves Avenard wrote: > By default, Myth uses mmap access Why? > Problem, turned out his was using a USB audio device, and > snd_pcm_hw_params_set_access didn't return any error. USB audio devices do support mmap. > ... I decided to stop using mmap and instead use snd_pcm_writei. > > Now on my system, this has added quite a bit of latency and the A/V > sync isn't perfect anymore... Using mmap neither reduces latency, nor does it improve synchronization. > Is there an official way to calculate an average system latency > (doesn't need to be perfectly accurate). Not the average, but try snd_pcm_delay(). Regards, Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
