At Wed, 17 Jun 2009 16:10:26 +0800, Zero Luo wrote: > > Dear Takashi, > > Data from usb dongle is 16K*16 bit PCM data. And what is the format and channels you are using in alsa-lib? alsa-lib itself can convert formats and channels automatically if needed. Takashi > 2009/6/17, Takashi Iwai <tiwai@xxxxxxx>: > > 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
