This patch changes the left_block initialisation code in the fill_caches
function from individual array element setters to a simple pointer to a
pre-initialised array.
Patch by (Paul Kendall ! paul X kcbbs knodel gen knodel nz)
Date: Sun, 27 Jul 2008 11:40:18 +1200
Subject: [FFmpeg-devel] [PATCH] h264 fill_caches left_block intialisation optimisation


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Fixes maybeH264_dumpvideo


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Can be disabled by removing #define ALLOW_NOCHROMA in case the extra if()
slow the code down meassureably.
Fixes at least
FRExt/HPCAMOLQ_BRCM_B.264
FRExt/HPCVMOLQ_BRCM_B.264


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	Remove another 2 incorrect checks.
	These would ignore fields of different parity.
I was wrong, i thought pic_stricture is the current pic structure.
But it does not make a difference either way on the reference bitstreams.


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These would ignore fields of different parity.


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That what the standard calls non existant is not related to the
value of the data[0] pointer.


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repair with hacks added by the PAFF fanboys. (sorry for the insult but
the code really was poor quality no matter how you meassure it, go and
buy cola, lots of cola if you are one of the authors)
new code is ~60lines old was ~200
Fixes at least:
FRExt/HCHP2_HHI_A.264
one sample also get decoded much better:
FRExt/FRExt1_Panasonic.avc (PSNR 11 -> 80)
(no i do not know why, the old code was too a big mess to figure out
 what it did)


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now related to SHORT2LONG MMCOs.


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that does not do anything.


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