Change-Id: I0c42a729038d0f4cb7bc07f587d066fcb1dfe9d9

Optimizing the variance functions: vp9_variance16x16, vp9_variance32x32,
vp9_variance64x64, vp9_variance32x16, vp9_variance64x32,
vp9_mse16x16 by migrating to AVX2
some of the functions were optimized by processing 32 elements instead of 16.
some of the functions were optimized by processing 2 loop strides of 16
elements in a single 256 bit register
This optimization gives between 2.4% - 2.7% user level performance gain
and 42% function level gain.

Change-Id: I265ae08a2b0196057a224a86450153ef3aebd85d

Change-Id: I44eb44eb3f36c05d916ef140ef42cc84f72f99ec

Change-Id: I28e9cf9347acd7279df3b841863a248479633265

Some cleanups on frames_to_key, frames_since_key.
Also removes the unused fixed_q parameters in vp9.

Change-Id: If8743a32c71de30a8d17136477b53d607a7acda8

The previous implementation stops motion vector prediction test when
the zero motion vector appears for the second time. This commit fixes
it by simply skipping the second time check on zero mv and continuing
on to next mv candidate.

It slightly improves stdhd in speed 2 by 0.06% on average. Most static
sequences are not affected. A few hard ones, like jet, ped, and riverbed
were improved by 0.1 - 0.2%.

Change-Id: Ia8d4e2ffb7136669e8ad1fb24ea6e8fdd6b9a3c1

This resolves a merge error.

Change-Id: Ifb83acc0a08e80c82f7624f9c86f79d3a86cc871

The code can be removed because mvp_full will be overridden after that.

Change-Id: I89559b1b6914c86bcd02b7359d37241948ac11d3

Change-Id: I9631b35810c232c134f39dc0edadb1b3860a45ae

Change-Id: I064ba32d5358bfbf080a4300fc1793b345080006

Change-Id: Ic5bf5682ccdb8d2fbad6bba0d7db19a4f47b62a1

rewind() does not work on pipes.

https://code.google.com/p/webm/issues/detail?id=678

Change-Id: I057f1e25c3f5662012d6e33ff4c97c88f50df357

Change-Id: I44a89b822a436299b9dd4ff26ad2e35767c29c58

The file was removed by 9152f485 after
the solution files were changed.

Change-Id: I868c56fd609f45fb3e21afd085b9e6c268aac038

Encapsulating direct references to lst_fb_idx, gld_fb_idx, alt_fb_idx.

Change-Id: I7e65ba3f131286e433e6651970c5647311fa4687

also:
 o remove dead code, create_dummy_frame
 o Fix a bug in command line handling that caused a segfault if wrong
   number of arguments were given.

Change-Id: I78f026aee4e363967b750e6cde0982659c558a1f

The feature undergoes prior assumption that the recursive partition
size search from 4x4 to 64x64, hence utilizing information from small
blocks to determine early termination in large block rate-distortion
optimization search. The current codebase is now going from top down.
The previous function might go with not properly initialized values,
hence removed.

Tested on pedestrian_area_1080p at 4000 kbps running under speed 2.
No visible difference in runtime observed.

Change-Id: I553df415c6191413762db7ae34e8790c71d8118e

Change-Id: Id9ff7772aa3a3fb5d6cf94aff7dc9489bd964340

Change-Id: I007d66a1cb1b44751dcceafbaa64649ed9a34562