[alsa-devel] snd_pcm_avail_update does not return until I have 32768 bytes ready

Hi group,

I am having a little problem with ALSA. My problem is that snd_pcm_readi does not return until i have 32768 bytes available. I want to get an interrupt back when I have 80 bytes ( 1/100 of a second ). This delay is about 4.09 seconds which is much too long to want.

My question is how do I tell ALSA to return from snd_pcm_avail_update when I have 80 bytes ready to read?