[alsa-devel] [RFC] disabling ALSA period interrupts
superquad.vortex2 at gmail.com
Fri May 14 05:09:55 CEST 2010
2010/5/14 pl bossart <bossart.nospam at gmail.com>
> > Refer to your patch "add rewind-safeguard parameter"
> > you mention glitch occur because application cannot rewind appl pointer
> > hardware ptr.
> > In another word, app ptr must be 128/256 bytes ahead of hardware ptr at
> > time to prevent glitch occur. this mean that the glitch was due to DMA
> > size since "PulseAudio modilfies its watermark when underflows occur".
> Man, you are seriously confused. You ought to do some reading, look at
> the code, use your brain and figure things out instead of spamming
> this thread.
underrun is application pointer behind hardware pointer
"Rewinding the ring buffer completely causes audible issues with DMAs."
rewinding ring buffer compleletly mean hardware pointer = application
"Glitch free" can only be achieved when PA adjust the watermark before any
unnder run occur not "until underrrun occur" since it is too late
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