Jim Perry wrote:
This is a relatively minor issue, but I noticed that I was getting continual audio glitches (very short bursts of white noise) during any kind of high CPU activity, but with no errors mentioned. Turns out that NuppelVideoRecorder uses SNDCTL_DSP_SETFRAGMENT to create 8 kernel buffers of size 1024 bytes, enough for 64ms of sound with the settings I was using. Keeping the number low is nice and all, but I had to crank up the number of kernel buffers to get MythTV to run on my old, slow computer.
It'd be nice if this was configurable or an error was mentioned in the log (if that's even possible).
It's a good idea. Have a look at AudioOutputOSS::SetFragSize() and see if you can suggest a good patch that is nice and general purpose for our uses. At the moment it tries to make the audio buffer approx 1 frame in size which gives good response when you pause the video stream (or fast forward).
Your machine really should find it a bit easier to maintain this latency though. Can I suggest trying also the low latency patches. On a 2.6 kernel with the low latency stuff and running with realtime priority, I can easily maintain a 2 * 512 buffer even in the face of a background kernel compile.
Agreed though it would be nice to get the normal settings quite general purpose. Please try to have a little experiment and suggest a suitable patch
Thanks
Ed W _______________________________________________ mythtv-dev mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
