Re: Envy24PT driver with VT1723 based card

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On Wed, 2009-11-25 at 17:01 +0100, Clemens Ladisch wrote:
> Krzysztof Adamski wrote:
> >> The device name would not be "digital" but "iec958" or "spdif".
> > 
> > With iec958 or spdif I get:
> > [AO_ALSA] Format ac3 is not supported by hardware, trying default.
> 
> Oops, try "plug:spdif" instead.  With mplayer's escaping rules, that
> would be "-ao alsa:device=plug=spdif".

This works:

Forced audio codec: hwdts
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
No accelerated IMDCT transform found
hwac3: switched to DTS, 1536000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, ac3, 1536.0 kbit/100.00% (ratio: 192000->192000)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
[AO_ALSA] alsa-lib: conf.c:3843:(parse_args) Unknown parameter AES0
[AO_ALSA] alsa-lib: conf.c:3969:(snd_config_expand) Parse arguments
error: No such file or directory
[AO_ALSA] alsa-lib: pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM
plug:spdif,AES0=6
AO: [alsa] 48000Hz 2ch ac3 (1 bytes per sample)

but you can see the errors, if I add the spdif as a default to
the .asoundrc file like this:
pcm.!default plug:spdif

I get this from mplayer:
Forced audio codec: hwdts
Opening audio decoder: [hwac3] AC3/DTS pass-through S/PDIF
No accelerated IMDCT transform found
hwac3: switched to DTS, 1536000 bps, 48000 Hz
AUDIO: 48000 Hz, 2 ch, ac3, 1536.0 kbit/100.00% (ratio: 192000->192000)
Selected audio codec: [hwdts] afm: hwac3 (DTS through S/PDIF)
==========================================================================
[AO_ALSA] Format ac3 is not supported by hardware, trying default.
[AO_ALSA] Unable to set format: Invalid argument
Failed to initialize audio driver 'alsa'
[AO OSS] Can't set audio device /dev/dsp to ac3 output, trying s16le...
AO: [oss] 48000Hz 2ch s16le (2 bytes per sample)
[format] Sample format big-endian AC3 not yet supported
[libaf] Reinitialization did not work, audio filter 'format' returned
error code -2
Couldn't find matching filter/ao format!

My main aim is to get mythtv spdif pass-through to work, with the
"Unknown parameter AES0" error mythtv does not work.
Basically I have to modify the driver to accept this card as one of the
known cards, I just don't know how.

K


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