List of renames:
  COMPPREDMODE_TYPE      => REFERENCE_MODE
  SINGLE_PREDICTION_ONLY => SINGLE_REFERENCE
  COMP_PREDICTION_ONLY   => COMPOUND_REFERENCE
  HYBRID_PREDICTION      => REFERENCE_MODE_SELECT (like TX_MODE_SELECT)
  NB_PREDICTION_TYPES    => REFERENCE_MODES

Change-Id: If723dabe9435325d0165dcd028142a2c78b417b4

* changes:
  detokenization speedups
  Don't write 0's to token_cache

Moves all rate control variables to a separate structure,
removes some currently unused variables,
moves some rate control functions to vp9_ratectrl.c,
and splits the encode_frame_to_data_rate function.

Change-Id: I4ed54c24764b3b6de2dd676484f01473724ab52b

Change-Id: I6a48d1f35ed5fe7a2c7499675b339994c9c3bdf2

Change-Id: I0c44800db10db8d74c1ddfe89abecfd1c53d0f8d

removed unnecessary ifs and branches ..

Change-Id: Id1698a35292659388f48926791024d1400f2cea9

- Rename the struct to VpxEncoderConfig.
- The idea behind this is to enable checking the global settings against
  stream specific settings in source files other than vpxenc.c.

Change-Id: Ic736cbb714845b9466acb34671780d65b83ad1a8

Change-Id: I9ea3946c17b19f511565cd771037abe7db8b3ddb

The change caused mismatches with some test vectors on neon.

Original CL: https://gerrit.chromium.org/gerrit/#/c/67863/

Change-Id: I913891636d53783e93cb1865ca78ded1821dc4b0

This code only updates the token_cache if the result is non0.

Change-Id: Idcabd0b993a926fea9c29dbec134b9c5c4859b40

Using for loop based on max_tx_size instead of separate checks. Combining
build_coeff_contexts() with update_coef_probs().

Change-Id: Ie335a7db29830677fbc14478a9c190d3c1068665

Modifications are done to reduce the total clock cycle.
Speedup: 1.2

Tested with: park_joy_420_720p50.y4m

Change-Id: Ia36b87e62e2f80a5fadaf5628729aedc80f38f3f

Added filter_selectively_vert_row2 to be ready for parallel
loopfiltering in vertical direction. This change did 2-row
filtering at a time. If 2 vertically adjacent 8x8 blocks do same
type of filtering, we can do 16-pixel filtering in parallel.

Next, we need to provide 16-pixel loopfiltering functions in c
and optimized versions for codec speedup.

Change-Id: Idf97bbdd70566e55bd30e1fd25cb8544e33291be

Add support to do 16 pixel horizontal filtering in Neon.
Nexus devices saw about 0.5% decode speed increase.

Change-Id: I2993f6c2d49f31fa74976879eeaa289fd3f4e15d

Also, clean up stylistically questionable code near my changes.

Change-Id: I92c96a274cb339b7b74174a608f94ae86aba8354

Change-Id: I67d1681c7b17661deb792c5e6a9e2014a73ff9b7

Change-Id: Ibe847000467fe46bf8ce87d8f1ef8f2d5ad1eaf4

Although no mismatch was indicated for 8/16 wide sub-pixel filters
in issue 661, they had similar problems that could cause mismatch
potentially. This patch fixed calculations in HORIZx8/16
and VERTx8/16.

Change-Id: I169961c9d40a20340995b7d22aafc89ccf30bfca

Change-Id: I29c0dfcf41a1253d5e2a0d2ff740c0c38ebaa5a2

Change-Id: Iadd771a33c8874f3b774923bca4da3c8fe5429ee

Change-Id: I98d750ee92ff51fb714980418ea28be3b1d0f3c6