[pulseaudio-discuss] [PACKAGERS] Potential problem with MMX optimised volume code.
gmane at colin.guthr.ie
Tue Oct 20 16:01:10 PDT 2009
I'm not completely 100% sure about this yet (had one confirmation of it,
but waiting for two others to get back to me), but I've been tracking a
problem relating to SIMD for a while in:
It's hardware dependant and my hardware is not affected, but with some
interactive session today, I was able to work with someone to narrow
down the problem.
It *seems* that pa_volume_func_init_mmx() is to blame. Not calling this
seems to address the issue. This will only affect those users with MMX
but without SSE2. IOW, with this call commented out, non-SSE2 users will
use an unoptimised (but working!) code path.
Here's a handy patch for you until I can say for sure what the problem
is (e.g. my two other users confirm the "fix").
wtay, if there is anything I can do to help you debug please shout!
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