This commit reworks the ONE_LOOP_REDUCED coefficient probability
model update process. It allows model update for every coefficient
across the spectrum at a coarser resolution, instead of performing
precise update only for certain subset of probability models.
The overall runtime remains nearly same (<1% change) for speed -6.
The compression performance is improved by 7.5% in PSNR for speed
-5 and 4.57% for speed -6, respectively.
Change-Id: Ifb17136382ee7e39a9f34ff4a4f09a753125c8d1
This avoids calls to get_unsigned_bits() with constants and
replaces hard to trace loops with simpler structures.
Change-Id: Ic1afc5a17d7df5bcfc85b76efda316b0bf118467
Values of MODE_UPDATE_PROB and VP9_COEF_UPDATE_PROB are equal, so replacing
them with one constant. Inlining appropriate arguments for functions:
vp9_cond_prob_diff_update (encoder)
vp9_diff_update_prob (decoder)
Change-Id: I1255a1cb477743b799b3bfbbcd8de6b32b067338
Uses mapping tables instead of complicated modulo/division
operations for prob mapping for forward updates.
No bit-stream or output change.
Change-Id: Ifd9ce8ac1437835c305c94f64c18273c7a68f546
