This commit enables an adaptive prediction filter type selection
for sub8x8 block sizes. In speed 1, it re-uses the filter type of
collocated 8x8 block if it is tested in the rate-distortion optimization
loop, for the sub8x8 blocks. Otherwise, it runs the normal test
over all the three filter types. In speed 2, it re-uses the 8x8
block's prediction filter type, if available. Otherwise, force it
to be EIGHTTAP.

Compression and speed performance wise:
speed 1
derf -0.266%
yt   -0.138%

bus at 2000 kbps: 33766ms -> 30451ms (10% speed-up)
football at 600 kbps: 48173ms -> 43786ms (9% speed-up)

speed 2
derf -0.026%
yt   +0.134%

bus at 2000 kbps: 18973ms -> 17698ms (6% speed-up)
football at 600 kbps: 26748ms -> 25096ms (6% speed-up)

Change-Id: I77e097533b969fd3472147225fa79fc98095d342

Silences some lint warnings in previous patches

Change-Id: I04bf47ebe7e63a95fd322719a3154e589c115d78

This function sets the motion search range limit. Rename it to be
more informative.

Change-Id: I2e8e01073dcb99c9bea9c9acd0a61d672d615444

Change-Id: I976f70b640b06f20533ad29578a5b2acca134fd4

Temporarily change memcpy to memmove.

Change-Id: I700a197bc1ce496be1ddad7118429c5da465b0ca

This commit constrains the maximal motion search range for sub8x8
blocks to be [-1023, 1023], in the unit of full pixel.

Change-Id: I955b60649364ab410f2453cafd46a496f2fcb43e

There were two problems with the format string in
the conditionally compiled print statement. It referred
to a variable that is no longer available and it used
incorrect format specifiers.

Change-Id: I315e22bea2691bb535a2e33f5ca206fc55287a37

Change-Id: Ib5ba4e0b438107741efa28251848306322fd7f89

reorder the tiles based on size and their presumed complexity. this
minimizes the cases where the main thread is waiting on a worker to
complete.

Change-Id: Ie80642c6a1d64ece884f41683d23a3708ab38e0c

Change-Id: Icba06e84ca55c419abbacedf5825eeb394a1b140

In evaluating partition split case, Wrong partition size is used in
calling partition_plane_context(). This commit change to use the
correct sub partition size. The incorrect partition size used were
causing an ASAN error in unit test.

Change-Id: Iab695b764bc51cc61580075f2ae4001421132362

Renames:
  vp9_get_pred_context_mbskip => vp9_get_skip_context
  vp9_get_pred_prob_mbskip    => vp9_get_skip_prob

Change-Id: I2af499848ef73f3f5cd8cdb27852d0bcdfe31d09

Change-Id: Ib46a97d8ff9f2915b9fa2abba3cd18b6711fcb0c

Change-Id: Ic429b2f16462e926f30efb3af4da3080026359d8

Change-Id: Ie100114a01b8b4da7248603c40676792cd06b32a

Merge "Implenment on demand border extension. In place extend the border now. Next commit will totally remove the border."

Change-Id: I67a45a41312ca0efd8fe00ccd8bdc0f97675d09f

the border now. Next commit will totally remove the border.

Change-Id: Ic1e1ca9cc34f81c688715b3948689b47df63a151

Change-Id: I83ffed2b1878a35ac35f07f9ee74309adc9c7b11