Mailinglist Archive: radeonhd (427 mails)

[Rafał Miłecki <zajec5@xxxxxxxxx>]

2009/5/12 Anders Eriksson <aeriksson@xxxxxxxxxxx>:
> zajec5@xxxxxxxxx said:
> > 1) AFAIK tested only on one RS690 (do you have some RS690 to test it? guess
> > would be nice)
>
> As I have an RS690, In could test it to my TV if yyou want. However, I'm not
> sure if HDMI audio is such a big deal, anyway. Most (all?) computers are
> already hooked up to some audio device, and what's coming out of your average
> TV/LCD speakers is not of great quality. :-(
>
> My guess is that the RS690 community would prefer to use the HD decoding
> capability rather than HDMI audio if they have to choose.

Ouch, please, read and reconsider your opinion :)

With normal, standard analog jack out you will transfer sound in quite
poor quality.

Solution for better quality is digital output: S/PDIF in form of
RCA/jack (coaxial) or optical (Toslink)... or HDMI of course. With
S/PDIF and RCA/jack problem is that it's usually not available in most
notebooks and not awlays available in motherboards with integrated
audio cards. So having ATI card in notebooks I can play digital sound
to /some/ device.

Now about /some/ device. It doesn't have to be TV with poor speakers
actually. First I can connect with HDMI to TV and then forward sound
(still in digital form) from TV to some real audio device. Second you
can connect with HDMI to some "A/V receiver" (it's called amplifier in
some languages, like Polish) and that receiver parses digital sound
(sending it to many speakers) and forward video to TV.

And even if you have PC (not notebook) and want to connect it to TV to
play movies I still belive it's great to use HDMI. With just that one
cable you can transffer video and audio (digital). In other case you
would need to use two cables which means more work and bigger costs :)
That's what I did with my RV635.


> Amyway, I guess you want if done, as the work's already done. What should I
> test? AFAIK, my TV has no indication for "yes I'm receiving AC3/xxx/yyy audio
> from you fine".

I belive TVs mostly can't decode "pure" AC3 or DTS. But you can still
try sending audio in already decoded form to your TV.

1) get sources of radeonhd from git
2) get RS690 patch
(http://lists.opensuse.org/radeonhd/2009-04/msg00265.html - I'm afraid
you have to copy&paste it from archive)
3) apply patch, compile, install, restart X
4) check "aplay -l" for something like card 1: HDMI [HDA ATI HDMI],
device 3: ATI HDMI [ATI HDMI]
5) just  try mplayer -ao alsa:device=hw=0.0 some.video.or.audio.file

Or maybe start from point 4 to avoid discovering audio device too late :P

-- 
Rafał Miłecki
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