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LPC: Linux audio: it's a messLPC: Linux audio: it's a messPosted Sep 19, 2008 22:07 UTC (Fri) by nix (subscriber, #2304)In reply to: LPC: Linux audio: it's a mess by Richard_J_Neill Parent article: LPC: Linux audio: it's a mess
It seems fundamentally daft to have a daemon handling sound at all.Then what do you suggest does mixing of stuff from multiple processes? You can't do it in the kernel, it's solid floating point at least (and more likely some flavour of SSE). You have to do it in some separate process. btw, dmix forks off a daemon. (Regarding the rest, maybe Lennart or someone can chip in: I use PA mostly for the network-transparency and volume-choice stuff and have only one sound card and set of speakers.)
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LPC: Linux audio: it's a mess Posted Sep 21, 2008 21:05 UTC (Sun) by mezcalero (subscriber, #45103) [Link]
Please note that ALSA dmix doesn't actually fork a daemon off anymore. Since quite a while actually.
ALSA dmix is a pretty nifty piece of engineering. It allows multiple programs to write data to the audio device hardware buffer simultaneously in a very elegant way. However, this design nonetheless limits the possibilities of it quite a bit. For example, doing stuff such as "glitch-free" directly in dmix would be very difficult.
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