This fixes a valgrind error.

Change-Id: I0e1ef212ba09d65e3d71dd209f0786ae6530d2c8

Change-Id: I0ca77329d882a2026f6c1941b8e447d86bc87bda

Split partition probabilities between keyframes and non-keyframes,
since they are fairly different. Also have per-blocksize interframe
y intramode probabilities, since these vary heavily between different
blocksizes.

Lastly, replace default probabilities for partitioning and intra modes
with new ones generated from current codec. Replace counts with actual
probabilities also.

Change-Id: I77ca996e25e4a28e03bdbc542f27a3e64ca1234f

Fix the calculation of step size in height.

Change-Id: I0e0c0175f141f5a41214ae51cef233d13942d3c5

Change-Id: Ieface458c83eb6e7ee95595d9fc662f372117c9a

Added structures to support independent rd thresholds
for different block sizes (and set experimental block
size correction factors).

Added structure to to allow dynamic adaptation of thresholds
per mode and per block size basis depending on how often
the mode/block size combination is seen (currently fixed factor).

Removed some unused variables.

TODO
- Adaptation of thresholds based on how often each mode chosen.
- The baseline mode values could also be adjusted based on
  the block size (e.g. for a particular intra mode use a low threshold
  for 4x4 prediction blocks but a relatively high value for 64x64.

Change-Id: Iddee65ff3324ee309815ae7c1c5a8584720e7568

Turn this feature off for some modes in  "good" quality.

Change-Id: I3f262d62cca8f01736b977af1465291e8be29f0a

This avoids encoding tokens for blocks that are entirely
in the UMV border. This changes the bitstream.

Change-Id: I32b4df46ac8a990d0c37cee92fd34f8ddd4fb6c9

This commit makes the coding/reconstruction operations of intra
coding rate-distortion loop for UV components consistent with those
of the encoding process.

key frame coding gains:
derf:   0.11%
stdhd:  0.42%

Change-Id: I8d49f83924a320e3689ef2d60096c49d7f0c7a40

Bits moved: refresh_frame_flags, active_ref_idx[], ref_frame_sign_bias[],
allow_high_precision_mv, mcomp_filter_type, ref_pred_probs[].

Derf results: +0.040%

Change-Id: I011f43c7eac0371d533b255fd99aee5ed75b85a5

Results:
derfraw300: +0.2

Change-Id: Ie40dc3b31e877ee705f936066d7fa5702bd01ecd

NO bitstream change

Change-Id: I79f6146dac5fdd157051b6f8dc611c0b7b5e5f7f

Adds backward adaptation and differential forward updates of switchable
interpolation filter probabilities. Also adds some cosmetic cleanups
and minor fixes on mv_ref probabilities.

derfraw300: +0.353% (with most coming from switchable interp changes)

Change-Id: Ie2718be73528c945fd0d80cfd63ca2d9cb3032de

This commit makes operations of the superblock intra coding rate
distortion optimization consistent with those used in the encoding
process. Given the test prediction mode and transform size, the rd
optimizer encodes and reconstructs each transformed block of the
superblock consecutively, then computes the total rate-distortion
costs accosicated with the current superblock to select the coding
decisions.

It achieves coding performance gains:
derf 0.353%
yt   1.111%

Change-Id: I0da2eb7a71361dfb8c1384927fc536b0c2790d07

in the calculation of maximum number of tiles in log2 scale.

Change-Id: Id283d6e51a8b926015fd3fc631cdbfb4b8268d4a

Overall PSNR drop on derf set is -0.024.

Change-Id: I1c05d2ace83488205ca16e3b06cd5f0ebceec8d6

Enable iterative motion search for compound inter-inter prediction
of block sizes 4x4/4x8/8x4 only when best coding quality is selected.
The iterative motion search provides about 0.1% gains for derf and
stdhd at this point, at the expense of longer runtime.

Change-Id: Idc03e7f827e51f1bb8d269bc3752ee297a6bbfe5

Change-Id: Ib557cc6351404b9e178e95a545883eb3666f11f0

Migrates costing changes/fixes from the rebalance expt to the head
without the expt on.

Rebased.

Change-Id: I51677d62f77ed08aca8d21a4c9a13103eb8de93f
Results:
derfraw300: +0.126%

Moving some code from vp9_pack_bitstream to encode_txfm function.

Change-Id: Icc25d6083e54f09886216fea632ceac002042d7f

Change-Id: Ie869ea4992e26867caec46cb878fc86a646aeb9f

Change-Id: I02c17fb733c0f3c22dc3167c3d3182797415f1ae

Change-Id: I615125483da71a623a930d6e20c42df82ea0e6ee