This commit refactors the vp9_rd_pick_inter_mode_sb function to
remove the intra mode early termination dependency on the mode
search order.

Change-Id: If6ac49aa7c530c7b9a5bd31b0ab84db83e192bec

This commit allows the encoder to find current best prediction mode
state using best_mbmode, instead of fetching from the static mode
search table via best_mode_index.

Change-Id: Ibefeab83aed33a49c2be03e83f09153856ca4271

Allow building for targets which have NEON but not EDSP or MEDIA.

Set HAS_NEON flag for builds which have neon assembly but not
intrinsics.

Change-Id: Ibfa81a8444a8c55d1d3209c533d1d70d2f809669

The use of use_lastframe_partitioning is totally removed in good-
quality encoding. Its usage in real-time encoding needs to be
evaluated to see if it can be removed too.

The Borg tests at speed 4 showed:
stdhd set: 0.220% psnr gain, 0.166% ssim gain;
derf set:  0.329% psnr gain, 0.476% ssim gain.

Speed test on selected clips showed 1.54% speedup.(Worst case:
pedestrian_area_1080p25.y4m, speed loss: 1.5%)

Change-Id: I1c844d329b0b5678558439b887297c1be7ddab00

Add qp/bitrate condition, update some settings.

Change-Id: I1af0f102823a886393be063ad9d17d7564753cc7

These functions moved from 'neon_asm' to 'neon' in
9293d267

Change-Id: I9cb5626c3eec96876a73fb18f2bfc982a5858edb

* changes:
  vp9_pick_inter_mode: normalize some types
  vp9_pick_inter_mode: cosmetics: localize var. defs
  vp9_pick_inter_mode: cosmetics: add const
  vp9_pick_inter_mode: cosmetics: fix indent
  vp9_pickmode: move PRED_BUFFER definition to .c
  vp9_pickmode: make vp9_pick_inter_mode() void

Compile fails when CONFIG_INTERNAL_STATS
flag is set.

Change-Id: Iba7701c058169ca3fc0b9008619ac55a1fe1a8b6

Change-Id: I46472a524f5188b293332946be943bd15cfc8777

Check image format of reference frames.

Change-Id: I7d8d7f097ba547839ff9cec3880bd15a4948ee06

Use generic C implementation instead of neon-specific code

Change-Id: Ib322b4ece9cdbd4de76a9eed3d2e9fd1d8542406

Change-Id: Ifae8906185a868a07685eb7a7da2484af95e70a7

Issue 24479004: Fix building with MSVC for arm
https://webrtc-codereview.appspot.com/24479004/

Change-Id: I758b33a21f46e46af6e58d83b7c045262ac9c7d9

Change-Id: Ib4f5dd733eb2939b108070a01e83da5d9990bac0

Change-Id: I4c74dcab6358817f03d3bc4d526006d241f0c10e

Change-Id: Ifbfc142291697a1847ef85ced0b0eb4d6dab161e

Change-Id: I2450b4856e48dbc4d5b938b2edcea0704f756c8e

+ delete a dead comment

Change-Id: Ibdb07f6dbdb30fc7888f6115ddc326fcec1157a7

Change-Id: I3737772fe53f9885c82e2ac4c1af478ab951c16c

the previous return value was constant and unused.

Change-Id: Ic3be55edb4a884448c7bb07977a80dfb58b7b940

Change-Id: If91017b792572c9db6e257011ca307bef8428486

The speedup in rd_pick_partition() function makes it possible
to drop use_lastframe_partitioning feature. By doing that, we
achieve good PSNR gain with small speed loss. Also, this makes
encoding loop less complicated. The code cleanup patch will
follow.

Borg tests showed:
1. At speed 2,
   stdhd set: 0.201% PSNR gain, 0.133% SSIM gain;
   derf set:  0.262% PSNR gain, 0.276% SSIM gain.
2. At speed 3,
   stdhd set: 0.139% PSNR gain, 0.109% SSIM gain;
   derf set:  0.447% PSNR gain, 0.442% SSIM gain.

The average speed loss over selected test clips is within 1%
with the worst case of 4%.

Change-Id: Icfd2ded7869372b585a6972855d933b3d0280d90

Change-Id: I6e8d3f08c8a8ce3555a498feba471ba9fec411c6