[MPlayer-users] AC3 passthrough on SB Live! 5.1, audio skips

[Frederik Klama]

On Sunday 05 May 2002 18:37, Norman Kohler wrote:
> Am Son, 2002-05-05 um 17.00 schrieb Frederik Klama:
> > On Sunday 05 May 2002 12:54, Marcus Blomenkamp wrote:
> > > Frederik Klama wrote:
> > > What exactly goes wrong? Are you sure that 'hw:0,3' is correct? Cards I
> > > touched, had their digital device attached to 'hw:0,2'.
> > >
> > >  > said, it ONLY works when I use "iec958:AES=0x87" as the driver
> > >  > option of alsa. I tried everything from "hw:0,0" to "hw:0,25",
> > >  > nothing. :(
> > >
> > > Under '/proc/asound/card0' you can see which devices are available in
> > > what direction, eg: pcm0p pcm2c (p,c := playback,capture)
> >
> > Device 1 and 2 are just capture and 3 is "EMU10K1 FX8010" (isn't that the
> > effects chip ?).
>
> Well I found this in alsa-driver-0.9.0beta12/doc/SB-Live-mixer.txt:
>
>
> "1) IEC958 (S/PDIF) raw PCM
> --------------------------
>
> This PCM device (it's the 4th PCM device (index 3!) and first subdevice
> (index 0) for a given card) allows to forward 48kHz, stereo, 16-bit
> little endian streams without any modifications to the digital output"
>
>
> And only hw:0,3 works for my sblive.
> When I use alsa9 output, I get those skips, too.
> But it works perfectly via OSS emulation. Yes, it works for me at all!

It doesn't seem to work for me. :(
I use: "insmod snd-pcm-oss snd_dsp_map=0 snd_adsp_map=3" to map adsp to device 
3.
But all I get when I start mplayer with "-ao oss:/dev/sound/adsp -ac hwac3" is 
one click at the beginning. My decoder does not seem to recognise whatever 
comes out of the SP/DIV output.
Yes, I have switched the RAW output on in the mixer.
What could be the reason why I do not get any AC3 sound using /dev/sound/adsp 
?
[/dev/sound/adsp is the same as /dev/adsp (I use devfs)]

Frederik Klama

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