[alsa-devel] Status of Dolby Digital on-the-fly encoding? (via a52 plugin)

[Takashi Iwai]

At Tue, 18 Dec 2007 15:52:30 +0100,
Dr. Alexander K. Seewald wrote:
> 
> On Tue, Dec 18, 2007 at 01:01:53PM +0100, Takashi Iwai wrote:
> > > Problem seems to lie deeper...
> > Sounds so.  Which hardware and driver is it?
> * NVidia CK804 (integrated into the motherboard MSI K8N Neo4 Platinum)
> 
> aplay -l:
> 
> card 0: CK804 [NVidia CK804], device 0: Intel ICH [NVidia CK804]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> card 0: CK804 [NVidia CK804], device 2: Intel ICH - IEC958 [NVidia
> CK804 - IEC958]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0

The driver won't work properly for SPDIF I/O on nvidia chipset.  It
cannot set SPDIF status buts correctly.  AC3 requires non-audio bit,
and some receivers are sensitive for that.  DTS doesn't seem to
require it (at least most receivers work).

> * Alsa drivers 1.0.8-7 (= latest stable version on Debian Sarge)
> [2.6.11 kernel, Debian sarge]

Oh hoo, a stone age version...


Takashi