Re: [Alsa-user] how to enable optical output on VIA VT1708S?

[Gianluca C. <gia...@gm...>]

On Thu, Jan 7, 2010 at 10:58 PM, Gianluca Cecchi
<gia...@gm...> wrote:
[snip]
> [gcecchi@tekkaman dts_tests]$ mplayer -ao alsa -ac hwdts
> dts_the_other_side_44khz.wav
> MPlayer SVN-r29701-4.4.1 (C) 2000-2009 MPlayer Team
> mplayer: could not connect to socket
> mplayer: No such file or directory
> Failed to open LIRC support. You will not be able to use your remote control.
>
> Playing dts_the_other_side_44khz.wav.
> Audio only file format detected.
> ==========================================================================
> Forced audio codec: hwdts
> Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
> No accelerated IMDCT transform found
> hwac3: switched to DTS, 1411200 bps, 44100 Hz
> AUDIO: 44100 Hz, 2 ch, ac3, 1411.2 kbit/100.00% (ratio: 176400->176400)
> Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
> ==========================================================================
> AO: [alsa] 44100Hz 2ch ac3 (1 bytes per sample)
> Video: no video
> Starting playback...
> A:  10.4 (10.3) of 156.0 (02:36.0)  0.2%
>
> During this test
> [root@tekkaman ~]# fuser /dev/snd/*
> /dev/snd/controlC0:  18006
> /dev/snd/pcmC0D1p:   18006m

When I run the sample above, I get
Every 3.0s: cat /proc/asound/card0/pcm1p/sub0/status ;cat
/proc/asound/card0/pcm1p/sub1/status                              Fri
Jan  8 00:28:07 2010

state: RUNNING
trigger_time: 15714.577461093
tstamp      : 15766.716206711
delay       : 20372
avail       : 1676
avail_max   : 1676
-----
hw_ptr      : 2299117
appl_ptr    : 2319489

closed

So it seems something is going through......
Instead, in /proc/asound/card0/codec#0

...
Node 0x21 [Pin Complex] wcaps 0x400701: Stereo Digital
  Pincap 0x00000010: OUT
  Pin Default 0x074521f0: [Jack] SPDIF Out at Ext Rear Panel
    Conn = Optical, Color = Grey
    DefAssociation = 0xf, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Power: setting=D0, actual=D0
  Connection: 1
     0x15
...
Does this mean that the optical plug is recognized as not present???