Also prevent them from being reintroduced.

Change-Id: I4e16293c8185462b48e641f066d78449685e2854

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

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

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

Change-Id: Iab3e8225a8d159cd33f5849dffe6802e25038047

Fixes spatial svc rc assert failure introdcued in:
https://chromium-review.googlesource.com/#/c/312959/1

Change-Id: I6096bfbc484859d71a5fb55e6a3248a31885af61

Fixes bug introduced in
https://chromium-review.googlesource.com/#/c/299482/5

Change-Id: If542c1a917380465dd9bc4ce5e32b0adbb20e340

For non-rd variance partition: only allow minmax computation
(which currently has no arm-neon optimization) for speeds < 8.

Performance loss is small: On RTC set with speed 8, few clips lose ~2/3%,
average loss is < 1%.

Change-Id: Ia9414f4d0b77dc83c3e73ca8de5d903f64b425ce

Relocate h_predictor_4x4 from SSSE3 to SSE2 with XMM registers.
Speed up by ~25% in ./test_intra_pred_speed.

Change-Id: I64e14c13b482a471449be3559bfb0da45cf88d9d

Change initial state of noise level, and only update
denoiser with noise level when estimate is done.

Change-Id: If44090d29949d3e4927e855d88241634cdb395dc

This fix allows to enable reuse_inter_pred.

Change-Id: I53f2bf1163bb0036ffb6df92117a86debdca11d1

Change-Id: I3ba4ede553e068bf116dce59d1317347988b3542

* changes:
  add vp9_satd_neon
  fix vp9_satd_sse2
  vp9_satd: return an int

For denoising, and for noise level above threshold, re-evaluate
ZEROMV for mode selection after denoising.
Current change only does this check if selected best mode (before denoising)
was intra.

Change-Id: I4b1435b68d26c78f7597b995ee7bff0ddd5f9511

Fixes a spatial_svc breakage introduced in
https://chromium-review.googlesource.com/#/c/305228/3.

Change-Id: I7f2cecbdca980addb85d5e58b58b5454f4730ada

~60-65% faster at the function level across block sizes

Change-Id: Iaf8cbe95731c43fdcbf68256e44284ba51a93893

Left neighbor read from memory only once.
Speed up by ~20% in ./test_intra_pred_speed.

Change-Id: Ia1388630df6fed0dce9a6eeded6cb855bbc43505