Jenkins warns on left shift of negative numbers and non-aligned read
of int. This commit fixed the two issues.

Change-Id: I389a7fb6a572c643902e40a4c10fefef94500d2c

Change-Id: I32fd813af7dd2a7d451f5fda278ea888b181fa8e

Change-Id: I302ab4603553352a84b57bc89bc9e3d037978d29

Change-Id: Ife0dd29fb4ad65c7e12ac5f1db8cea4ed81de488

Renaming txfm_stepdown_count to tx_stepdown_count and max_txfm_size to
max_tx_size.

Change-Id: Ifc173e22c78240e561a57c4c741b64b1b8fc6fef

Using best_mv[2] array instead of two separate variables.

Change-Id: Iefa0a41f5c42c42f2c66cef26750da68405f0f25

Change-Id: Ie51306689c0dc527a8aa12d3984389dd8f360dea

Change-Id: I99a1880aee015ae16311ba05a31aa307df89bef2

This fix a bug introduced by ac6093d1

Change-Id: I0700a4daf7a6a2471074f81a4596352287fb2ac9

Both first pass and mbgraph search use block size 16x16 for motion
estimation. This commit put a limit of motion vector range. The
effective range allows the entire 16x16 with required subpel
interpolation input to be completely outside image border, but
not any further away from image border.

Change-Id: Id70a5ed08be49e70959f064859d72adc7d775d08

Updating fractional_mv_step_fp and fractional_mv_step_comp_fp function
types.

Change-Id: I601c4378bc39ac3ffd4e295d9cbd8e1f74829d46

Also removed obselete comment

Change-Id: Iae1664777d76383639c637ee786e0d50fc45819a

The change is to better reflect the nature of the constants.

Change-Id: Icabac6e9bceefbdb3f03f8218f88ef75943c30fb

INT64_MAX may be assigned as RDCOST when RDCSOST computation is skipped
for speed, this commit to prevent INT64_MAX from being used as real
RDCOST in transform size decision.

Change-Id: I89a945134191bbdea1f1431ade70424ac079eaac

The FrameRate element has been deprecated.

Change-Id: I68ac496e7b33685a100a45d2772e0ff30eb6a811

Improves results a little.

Change-Id: I7bcac02dbb65b43a993445cf557c520197114e5c

After change of MI context storage , mi_8x8[]  pointer may be null for
a block outside of image border. The commit changes to access the data
only after validation of mi_row and mi_col.

Change-Id: I039c4eb486a228ea9d8e5f35ab9ae6717d718bf3

Mathematically the results are the same.

Change-Id: I1c5126cd3ca64e8515ca6331e0989c6f7dd651a0

The probability model used to code prediction mode is conditioned
on the immediate above and left 8x8 blocks' prediction modes. When
the above/left block is coded in sub8x8 mode, we use the prediction
mode of the bottom-right sub8x8 block as the reference to generate
the context.

This commit moves the update of mbmi.mode out of the sub8x8 decoding
loop, hence removing redundant update steps and keeping the bottom-
right block's mode for the decoding process of next blocks.

Change-Id: I1e8d749684d201c1a1151697621efa5d569218b6

Change-Id: I5759f309f94a2b5c1297e6db3735c52986d3ecb2

Change-Id: I62550a7a883115f3ce878710cf3bb039bea54390