On the SB Live, one opens the device for SPDIF out with device name:
"iec958:AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2"

Can the C-Media card also support this ?
Then an application like xine, could use the same device name for all audio
cards when using alsa 0.9.x

Cheers
James


> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Thomas
> Tonino
> Sent: 30 January 2002 21:19
> To: Takashi Iwai
> Cc: alsa-user; [EMAIL PROTECTED]
> Subject: Re: [Alsa-devel] Re: [Alsa-user] C-Media 8738 SPDIF problem
>
>
> Takashi Iwai wrote:
>
> >
> >- Disable all "IEC958 *" switches except for "IEC958 Output  Switch"
> > (probably "IEC958 5V" too)
> >- run "aplay -Dhw:0,2 foo.wav" and get dump from
> >  /proc/asound/card0/cmipci.
> >
> This works: I get output on analog and on spdif. Hurray!
>
> Some further experiments: setting iec958 in monitor to M mutes the
> analog out ((replaced by the spdif input? doesn't work, isn't this label
> working in reverse btw?), but I cannot hear the incoming spdif signal on
> analog out, no matter what settings I try. This is with optical and
> electrical connected at the same time.
>
> But, we have the same level of functionality as OSS. Good!
>
> Still, the Mix Analog option does not work. Gives full scale output on
> the DAT VU meter. No sound though - looks like full scale DC.
>
> >
> >If it still doesn't work, try to swap channel 0 and channel 1 by
> >changing the definition around line 297 like below:
> >
> >#define CM_CH_PLAY   1       // 0 as default
> >#define CM_CH_CAPT   0       // 1 as default
> >
> Didn't try this.
>
> By the way, would it make sense to have the hw:0,2 device as default? It
> uses the same analog out as the normal output, but enables spdif. Or
> will this break cards without spdif?
>
> I'm now off to windows, try to get a register dump there...
>
>
> Thomas
>
>
>
> _______________________________________________
> Alsa-devel mailing list
> [EMAIL PROTECTED]
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