At Wed, 17 Jun 2009 07:25:25 +0000 (UTC), ZeroCluo wrote: > > Hi > > I am trying to trace the Audio data from usb bus. > in kernel: > dump data in retire_capture_urb() ,found data format is like: > AABB 0000 CCDD 0000 ; > > but in alsa library , > dump data in snd_pcm_mmap_begin(),the "0000" is cut,only "AABB CCDD", > > Do you know when and where those "0000" is cut? Are you using the native format that the hardware runs? Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel