[FFmpeg-devel] [PATCH] Make VP3/Theora Decoder Much Faster
Sun Dec 6 13:48:48 CET 2009
On Sat, Dec 5, 2009 at 10:01 PM, Mike Melanson <mike at multimedia.cx> wrote:
> Jason Garrett-Glaser wrote:
>> Patch approval/comments? ?I'd like to *commit* my speed optimizations
>> if possible ;)
> Sorry for the delay; reviewing now.
> Okay, I understand all of the optimizations now (and I have some new ideas
> for opts). Go ahead and commit.
Attached is a vague prototype for something I didn't mention
earlier--a DC-only iDCT, the same type of thing I wrote for WMV a
while back. I don't have time to finish it right now, so I've
attached a probably non-working but Basic Idea for it. It would need
asm code too, which would probably be easy enough (just blatantly copy
the h264 ones and replace the C code for calculation of the DC value).
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