At Sat, 16 Aug 2008 01:56:14 +1000, Ben Stanley wrote: > > On Fri, 2008-08-15 at 16:59 +0200, Takashi Iwai wrote: > > At Sat, 16 Aug 2008 00:45:33 +1000, > > Ben Stanley wrote: > > > Could you please clarify > > > 'independent PCM IEC958 status bits' vs > > > 'default IEC958 status bits', > > > perhaps by pointing out some drivers implementing each type? > > > > Run the following: > > grep -r 'IEC958.*PCM_STREAM' sound/pci > > > > These drivers have "IEC958 Playback PCM Stream" controls. These > > controls are assigned to PCM streams, and changed individually from > > the "IEC958 Playback Default" control. When the PCM stream is closed, > > it's back to the status of "IEC958 Playback Default". > > > Thanks for the info. > > > > > > You can change the status easily via iecset program in alsa-utils. > > > I note here that iecset does not accept --device=hw:0,1 for example. Any > > > reason for this? > > > > Because it's invalid. The --device option is for a control device, > > not for a PCM device. If you want to change the secondary control > > (i.e. "IEC958 Playback Default" with index=1), pass "-n 1" to iecset. > > > um, that doesn't work either. > > mythtv@mythtv:~$ iecset -D=hw:0 -n 1 audio on > iecset: invalid option -- n > Usage: iecset [options] [cmd arg...] > Options: > -D device specifies the control device to use > -c card specifies the card number to use (equiv. with -Dhw:#) > -x dump the dump the AESx hex code for IEC958 PCM > parameters > -i read commands from stdin > Commands: > professional (common) > off = consumer mode, on = professional mode > audio (common) > on = audio mode, off = non-audio mode > rate (common) > sample rate in Hz > emphasis (common) > 0 = none, 1 = 50/15us, 2 = CCITT > lock (prof.) > off = rate unlocked, on = rate locked > sbits (prof.) > sample bits 2 = 20bit, 4 = 24bit, 6 = undef > wordlength (prof.) > 0=no, 2=22-18bit, 4=23-19bit, 5=24-20bit, 6=20-16bit > category (consumer) > 0-0x7f > copyright (consumer) > off = non-copyright, on = copyright > original (consumer) > off = 1st-gen, on = original > > I see that I have alsa-utils 1.0.15-3ubuntu2 (from ubuntu 8.04). Perhaps > my version is too old? Yep. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
