On Tue, 05.01.10 08:54, Bill Cox (waywardgeek at gmail.com) wrote: > On some mailing lists, I've read that some users avoid PA partly > because older games they like to play wind up having delayed sound. I > would guess that there is a way to configure PA for specific > applications that run in user space to run with lower latency. First, > how would I do that for a specific game? Is it possible for me to > write a PA module that reads a simple list of such executables, and > configures them all to be low-latency? I know that speech-dispatcher > had a major problem with latency in PA until we rewrote the PA driver > to use the pulse-simple interface, and then set tlength to a lower > number. Would it be possible to modify such paramters in a module for > apps in my low-latency list? Fiddling with the latency has an influence on the buffering metrics. That means that both the client and the server need to be aware of that. That means the latency data needs to come from the client side, and then passed on to the server, since that is the usual flow for latency control information. I think what would make sense is to have a PULSE_LATENCY env var that can be used to override whatever the app specifies as latency. Should be reasonably easy to implement in libpulse. Unless someone beats me to it I will implement this eventually. I have created a bug for that a while back so that I won't forget this. http://pulseaudio.org/ticket/753 Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4
