Nic -
I just took a look at Add_Block, mostly because I sort of remembered it. It could be made a bit faster in a couple ways, but not done away with.
I'm not really sure why the AMD profiler points that out as a major problem. It's usually inlined but maybe not so when profiling? Can you say what percentage of time Add_Block and the other main offenders are using? I had a trial copy of Vtune when I was first playing with this a year ago but it's since expired.
Also it looks like most of the SSE2 support is turned off in MPEG2DEC3. I don't know what the effects of that are, but it certainly can't help P4 performance.
- Tom
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