On Sun, 7 Mar 2004, Ove Kaaven wrote:
> We have some games that want to mix several dynamic sound streams.
> That's easy enough at first glance, just snd_pcm_open() for each stream
> they want to output (and do software mixing when that fails). However,
> it seems that they want each stream to have independent volume and pan
> controls.
>
> As far as I can tell, this is possible to do on SB Live and Audigy by
> messing with the "EMU10K1 PCM Send" volume controls, but this is pretty
> device-specific and few other hw-mixing ALSA drivers seem to have
> exposed such a feature. (And software plugins are not of interest.)
>
> Are you planning to standardize such features or design a
> device-independent API for it? (And my manager wants to know which ALSA
> release this might get implemented in...)
I'm working on this issue right now, but I cannot estimate the release
time, because my work is hightly interrupted with the ALSA maintenance
issues.
Hopefully, the API will be functional in a few months.
Jaroslav
-----
Jaroslav Kysela <[EMAIL PROTECTED]>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs
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