At Fri, 20 Jul 2012 18:05:40 -0700, Liu, George wrote: > > I'm trying to write a virtual sound driver to capture PCM data. > How do I modify dummy.c to capture PCM into buffer? > > Does the PCM data ever sent to any of the pcm_op call backs? There's no read/write callbacks? Did you take a look at aloop driver? Takashi