Ronald S. Bultje 8fde07a3ae Don't recalculate mv_ref costs for each block/partition.
Changes cost_mv_ref() into doing a LUT into pre-calculated cost
arrays instead. Encode time of first 50 frames of bus (speed 0)
@ 1500kbps goes from 2min11.6 to 2min10.9, i.e. 0.5% faster overall.

Change-Id: If186e92c34c201b29cbbc058785a15c9c09e433a
2013-07-08 16:22:39 -07:00
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