* changes:
  test.mk: simplify vp8/9 checks
  test.mk: regroup white box tests
  test.mk: enable test_intra_pred_speed unconditionally

Change-Id: I3ef9a9648841374ed3cc865a02053c14ad821a20

This change has been imported from VP9 and
alters the nature and use of exhaustive motion search.

Firstly any exhaustive search is preceded by a normal step search.
The exhaustive search is only carried out if the distortion resulting
from the step search is above a threshold value.

Secondly the simple +/- 64 exhaustive search is replaced by a
multi stage mesh based search where each stage has a range
and step/interval size. Subsequent stages use the best position from
the previous stage as the center of the search but use a reduced range
and interval size.

For example:
  stage 1: Range +/- 64 interval 4
  stage 2: Range +/- 32 interval 2
  stage 3: Range +/- 15 interval 1

This process, especially when it follows on from a normal step
search, has shown itself to be almost as effective as a full range
exhaustive search with step 1 but greatly lowers the computational
complexity such that it can be used in some cases for speeds 0-2.

This patch also removes a double exhaustive search for sub 8x8 blocks
which also contained  a bug (the two searches used different distortion
metrics).

For best quality in my test animation sequence this patch has almost
no impact on quality but improves encode speed by more than 5X.

Restricted use in good quality speeds 0-2 yields significant quality gains
on the animation test of 0.2 - 0.5 db with only a small impact on encode
speed. On most natural video clips, however, where the step search
is performing well, the quality gain and speed impact are small.

Change-Id: Iac24152ae239f42a246f39ee5f00fe62d193cb98

4x4 Intra predictor implemented with MMX is replaced with SSE2.
Segfault in change 315561 when decoding vp8 is taken care of.

Change-Id: I083a7cb4eb8982954c20865160f91ebec777ec76

Also prevent them from being reintroduced.

Change-Id: I4e16293c8185462b48e641f066d78449685e2854

Fix copied over from VP9 master to VP10 master.
Do not reset the alt ref active flag when overlaying the middle
arf(s) of a multi arf group.

Change-Id: I1b7392107e7c675640d5ee1624012f39cc374c58

This reverts commit 89a1efa4.

This causes a segfault when decoding vp8, in both 32 and 64-bit

Change-Id: Idbb9bb28ab897e1d055340497c47b49a12231367

use CONFIG_VP[89] to protect white-box tests and drop redundant
uses of CONFIG_VP9 in variable assignments within that block

Change-Id: Id3c6cf5c7822aa161b19768b295f58829a1c6447

vp8/9/10/multi-config/unconditional

Change-Id: I7970575e997da0b68c6c54741a221fbba5ad0b08

For non-rd variance partition: Adjust variance threhsold based
on noise level estimate. This change allows the adjustment to be
updated more frequently.

Change-Id: Ie2abf63bf3f1ee54d0bc4ff497298801fdb92b0d

* changes:
  Speed up h_predictor_16x16
  Speed up h_predictor_8x8
  MMX in intra 8x8 prediction replaced with SSE2

Relocate the function from SSSE3 to SSE2, Unroll loop from 8 to 4,
and reduce mem access to left.
Speed up by >20% in ./test_intra_pred_speed.

Change-Id: Ie48229c2e32404706b722442942c84983bda74cc

Relocate the function from SSSE3 to SSE2, Unroll loop from 4 to 2,
and reduce mem access to left.
Speed up by >20% in ./test_intra_pred_speed.

Change-Id: Ib9f1846819783b6e05e2a310c930eb844b2b4d2e

The range_check is not used because the bit range
in fdct# is not correct. Since we are going to merge in a new version
of fdct# from nextgenv2, we won't fix the incorrect bit range now.

Change-Id: I54f27a6507f27bf475af302b4dbedc71c5385118

For low resolutions, whem 4x4downsample is used for variance,
use the same force split (that is used for 8x8downsample) for 16x16 blocks.

No change in metrics. Small improvement visually.

Change-Id: I915b9895902d0b9a41e75d37fee1bf3714d2366d

8x8 Intra predictor implemented with MMX is replaced with SSE2.

Change-Id: I0c90e7c1e1e6942489ac2bfe58903b728aac7a52

4x4 Intra predictor implemented with MMX is replaced with SSE2.

Change-Id: Id57da2a7c38832d0356bc998790fc1989d39eafc

the loop filter level is transmitted as 6-bits + sign so needs to be clamped in
the delta + absolute case.

BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1224363

Change-Id: Icbdca4fdbf043466429bd5c9d59dbe913bf153bc

the quantizer is transmitted as 7-bits + sign so needs to be clamped in
the delta + absolute case.

BUG=https://bugzilla.mozilla.org/show_bug.cgi?id=1224361

Change-Id: I9115f5d1d5cf7e0a1d149d79486d9d17de9b9639

Change-Id: I57a15aec1cb2d6638f5211d30c2c9f15fb62494f

This is so we may update level at any time (e.g., to be used
for setting thresholds in variance-based partition).

Change-Id: I32caad2271b8e03017a531f9ea456a6dbb9d49c7

Store it in nextgenv2 for now.

Change-Id: Iab0af0e15246758e3b6e8bde4a74b13c410576fc

Do not reset the alt ref active flag when overlaying the middle
arf(s) of a multi arf group.

Change-Id: Ia55a55a376973f3fd17161429fd2afb07b4df31f

Change-Id: I9a780131efaad28cf1ad233ae64c5c319a329727

Fixes crash in 2pass spatial svc test that was introduced in:
https://chromium-review.googlesource.com/#/c/313571/6

Change-Id: Iab3e8225a8d159cd33f5849dffe6802e25038047