[mythtv] [PATCH] QuickDNR

[D Banerjee]

New: MMX/iSSE optimized, get ready for this:
 -20% cpu usage!, ok well maybe not all the time :) Since rtjpeg cpu usage
is variable I used a static test screen, and I was getting an average
of -20% on mythbackend recording at 480x480 rtjpeg 170 on an athlon classic
800 (total cpu usage floating around 52%). In general however cpu usage
seems to float from -20% to +10%. There are still a few things that can be
tweaked (prefetch and non-temporal movq), I am interested in hearing what
other people are getting on other cpu's.

Normal arithmetic support: ~5% faster than before.

Still saving ~30% disk space.

I also discovered a bug in rtjpeg while testing (no filter), a solid blue
screen will peg the cpu usage and disk usage (It should hit rock bottom). I
don't have any image generators handy besides that, so I couldn't test
further, yet. So the exponential disk usage growth isn't just in my head :)

-Debabrata






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