Thanks, Maybe because I am new to ALSA , I am not able to explain exactly what I want. The issue that I am trying to figure is in SPDIF (iec958) frame , How can I update the 'user data bits' to ALSA from a Capture stream , and read the the 'user bits' from ALSA to update a Playback stream . thats if I will use a SNDRV_PCM_FORMAT_U24_LE format for example . ( and not SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE ) . because my HW have registers for channel status and user data . I saw in many ALSA drivers that get and updates 'channel status' bits, ( e.g. snd_emu10k1_spdif_get and snd_emu10k1_spdif_put functions ) . but didn't see any driver that updates or read user bits . Thanks in advance On 3/5/07, Lee Revell <rlrevell@xxxxxxxxxxx> wrote: > On 3/4/07, Maen Suleiman <maen.suleiman@xxxxxxxxx> wrote: > > But as I saw, channel status is changed by drivers, in the controller > > interface, why not the user data as well. > > > > Can you explain exactly what problem you are trying to solve? > > Lee > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel