Choose a different diagonal point to check when the two costs are
the same, making it consistent with the way we choose the best mv.
This slightly changes the encoding result, and the derflr set borg
test at speed 0 shows 0.027% Overall PSNR gain, 0.024% Avg PSNR
gain, and 0.043% SSIM gain.

Change-Id: Ic8ee3a6767394866d159e4f9e1c777604dd73c17

If the current best mv(namely, the search center) is still the best mv
after the first level search, the second level checks is skipped. This
patch doesn't change the bitstream. At speed 0, it speeds up the encoder
by 1% - 2%.

Change-Id: I054c91b884d3f7aef157436c061744562bd6506d

Add a guard to exclud dspr2 inverse transform files from vpx_dsp
make file, when high bit-depth is turned on. This fixes the jenkins
nightly build.

Change-Id: Ibacd86563af1ec4810c550905b3fa0397baeeafc

fixes link under vs9; this is the same change as:
dbf6e3f3 gen_msvs_vcxproj.sh: Avoid object name collisions.

Change-Id: I2a188c9024d0605e60e5e03ddcef1a25e7e53585

Chromium puts all the yasm output in the same directory. Looking at ways
to improve this but in the meantime get rid of collisions.

Change-Id: I923c5231d14e895ab96521eb89807ede868a0753

Change-Id: Ia9cf7c31cab4ba3dd6b9bb668c4b3e84bd55cf69

Move the declaration of commonly referenced variable to
vpx_dsp/mips/common_dspr2.c.

Change-Id: Ia51287b02e2ac5cfae0fba98c721f0810618f28e

Ssim_vars is used to accumulate stats based 4x4 pixel blocks, this
commit changes the allocations size to be based on mi_rows and mi_cols
to avoid out-of-bound memory access for larger size videos. The hard
coded 720x480 can only work for image size up to 2880x1920.

Change-Id: Id9d07f3f777385b448ac88a6034b7472e4cf3c79

Make it consistent with other formats.

Change-Id: I28f0d05ff7c5bf2b815989b3f1bd6c6b25608677

Removed redundant clip/saturate code from 2tap filter functions
average improvement 10%-40%

Change-Id: I1dafb5f7d2ce7a021d883d8af30fb93cd9ace173

Removed redundant clip/saturate code from 2tap filter functions
average improvement 20%-40%

Change-Id: I362540b0c7d5d3d69932c39d61b7d2a44da533d2

Change-Id: I0f0827a665c4d3039d3e5f09fa8c75c8f2bb2bab

It avoids symbol conflicts between function names of various
implementation versions.

Change-Id: Iad79ebcb8e289457801812a7745c8380b5b06a46

Change-Id: I3df35a99900ef8ce549d315866849a10db1a4c7b

Fix the VS build failure.

Change-Id: I4fb9d1c83980c4b52d5a848a9cb02ec72493dccb

Change-Id: Ibab434fb4bd6da02dba087582ed74811f555c3ed

xmm6-7 need to be stored

Change-Id: I6c51559598d335946ec91be6246b49589c63b724

Move mips/msa inverse transform implementations from vp9 folder to
vpx_dsp.

Change-Id: Ic4cf3f05247c3c63db7b532a0e5000017a962391

average improvement ~2x-3x

Change-Id: I6c17012c731fa4d56e0343f8de0df47b2dde289b

picks up build warning fixes for visual studio 2015

Change-Id: Idea85fa70d1aeb2a46ea355b87fe41ec5b2b9520