On Thu, 27.03.08 13:27, Jim Duda (jim at duda.tzo.com) wrote:
>
> Yes, I do understand that I can only get PCM stereo through the spdif using pulseaudio at this time (no AC3/DTS).
>
> My understanding (from reading all the posts) is that it's really a flaw with ALSA, which pulseaudio doesn't have a
> means to resolve (poor API with alsa spdif support).
>
> I really would love pulseaudio with AC3/DTS passthrough, but I understand we don't have it yet.
>
> I'm really just playing with stereo support through spdif at this time.
>
> What might be a useful interim solution is to use the alsa a52 encoder.
>
>
> The alsa a52 encoder will take a 6 channel "analog" audio source and encode it to a52 digital and then route out the
> spdif port. It has worked very well for me to upmix 2 channel stereo to 6 channel a52.
>
> In .asoundrc, I have:
>
> pcm.a52encode {
> type a52
> }
My recommendation: first try to get alsa to work, than make PA work on
top of it. Try testing your a52 device with aplay first:
aplay -c 6 -f S16_LE -r 44100 -v -D a52encode < /dev/urandom
If this doesn't work, then please contact the ALSA guys.
Lennart
--
Lennart Poettering Red Hat, Inc.
lennart [at] poettering [dot] net ICQ# 11060553
http://0pointer.net/lennart/ GnuPG 0x1A015CC4
