[mythtv] BUG: Alsa and surround sound

[Michael J. Pedersen]

On Mon, Jun 16, 2003 at 01:29:54PM -0700, John Hurliman wrote:
> Are you using SPDIF output (digital) for surround sound or running 
> multiple 1/8" jacks (analog) to each of the speakers? All channels in 
> SPDIF are controlled by the IEC958 Playback mixer in alsamixer, for 
> analog 4.1 each channel has it's own mixer control and the PCM volume or 
> Master volume that Mythtv controls only affects some, most likely the 
> front channels. If you are using SPDIF I'd recommend adjusting your 
> volume only through the external amplifier, in the analog case it's a 
> bit tricker. Myth would have to probe the soundcard for surround 
> channels, and adjust the volume of those too if found. It can be done, 
> but I don't have the patch ;).

Ahhh, so that's the trick that's involved. Unfortunately, I'm using
analog 1/8" connectors, so it's something that's noticeably harder to
deal with. Just wish I had the time to do it myself, and do it
correctly. Hacking together something for me might be feasible, but it's
definitely not something that would ever be releaseable.

-- 
Michael J. Pedersen
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