part 1/2 of fixing Altivec-accelerated H264 luma inloop filter

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original thread:
Date: Jun 15, 2007 10:10 PM
Subject: [FFmpeg-devel] [PATCH] h264 parallelized, (was: Parallelized h264 proof-of-concept)

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all 255s, and then doing the subtraction, nor of the vector with itself: saves
one instruction and a register.
Patch by Graham Booker % gbooker A tamu P edu%

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need to #include "h261data.h"

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patch by Patrice Bensoussan: patrice bensoussan free fr

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( http://www.pennfans.net/files/videos/Penn&Teller.on.The.View.mp4 )
with current Altivec implementation of loopfilter, while others are fine.
Let's disable it until we iron this bug out.

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patch by Aurelien Jacobs, aurel gnuage org

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Copy them from Cygwin to MinGW

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