Adds a dependent config flag 'interintra' to turn on/off interintra
modes altogether.
Adds a dependent config flag 'wedge' to turn on/off wedge compound
for both interinter and interintra.

Adds another macro to change wedge predictors to use
only 0, 1/2, or 1 weights.

From now, use
--enable-ext-inter --enable-wedge --enable-interintra to get the
same behavior as the old --enable-ext-inter.

Change-Id: I2e787e6994163b6b859a9d6431b87c4217834ddc

Enabling SEPARATE_GLOBAL_MOTION will remove the ability for
a block that uses zeromv with global motion to pick warped_causal
or obmc_causal as the motion mode. When this is enabled there is:

0.05% drop on lowres for global + warped enabled
0.15% drop on midres for global + warped enabled

0.12% drop on lowres with global + motion var enabled
0.07% drop on midres with global + motion var enabled
No performance change for global, warped, or motion var individually.

Change-Id: Idbfb8dd7a93da14902438504b06a08e5212e48cb

The offset of neighbors is communicated to av1_make_inter_predictors
so as to use the correct mi in gm warping

Change-Id: I471bbdf2112ed678969492b11730f15d9527eb7e

One codepath originally skipped a function which forks between
gm prediction and regular inter prediction. This change fixes this
for both high bit depth and regular bit depth.

Change-Id: I741d67a7c89eb6eb0cd35c02219739dc3ddb3841

The interpolation filter search used to be performed in a code block in
handle_inter_mode(). This change breaks that code out into its own
function to reduce the length of handle_inter_mode and ecapsulate its
functionality, making both functions more readable.

Attention has been paid to make as many arguments constants as can be.

Change-Id: I3fd484137fc0d16a47dba0b18ce0e2b349d24446

Reduce the size of 1-d overlapping from 1/2 to 3/8 of current block
Noise level performance change

Change-Id: I0fce7d5d3befcb657a841b05f90b3ca0e81f905b

Change-Id: Ib9b52d60aba72ee81a298fcbdbf0b25509ff6466

Enable obmc mode only when there are <= 2 left neighbors and <=2
above neighbors. Also disable it when there is no overlappable
neighbors.

Gain in AWCY test: 1.60%, was 1.64% when there is no restriction

Change-Id: I2d82ef4fb4daa9b0843ac8844f99b9f412c4f379

Lowres: 0.03% improvement, 1% improvement on waterfall_cif.y4m
Midres: 0.085% overall improvement, 1.253% improvement on station2_480p25.y4m
Change-Id: I3872934d978bb4ca828c6b9acd2fdb951d9da299

Change-Id: I43207cabac921fee77d19855abe49868dfd98bd1

Process sub8x8 chroma component decoding in the unit of 4x4 block.

Change-Id: I02e149f6076cdb5942b8a0a0b9ac2d833b1a7e49

Remove redundant table access.

Change-Id: Ib45f9b0bafe2a0c57449e787d60e70d35f19f6c7

Wedges were wrongly indexed when cb4x4 was on.
Brings a bit of the gain back when ext-inter + cb4x4 are turned on
together.

Change-Id: Id2bd359e70546cf0ea9cf31656064711c9894177

This CL allows us to use different interpolation filters for
YUV planes.

Change-Id: I9446d43ae2be5a9a48b8a4cb6efcac43df6196d5

When convolve_round is on, av1_convolve_2d_facade will be used for
interpolation rather than av1_convolve. Will remove the experiment
code of convolve_round experiment from av1_convolve in another CL.

So far we use 4-bit rounding in the intermediate stage on top of using
post rounding for compound mode after the last stage.

This will give us roughly 0.45% gain on lowres , 0.39% on midres and
roughly 0.6-0.7% on hdres
Altogether, is 1.15% on lowresm, 0.74% on midres and roughly 1.7-1.8% on
hdres

Note that there no restriction usage of 12-tap filter in the CL.
Adding that, we will lose roughly 0.1% again on lowres.

Change-Id: I6332e1d888e28a3b3ddc29711817d66e52cb5cdf

Change-Id: I32c6b9d8de6d0ae373d22e366c46f4d4c5d6a9b6

Change-Id: I02a019b1c11b3ee4ae32d424cb6ef2f8ae554824

Allow the above combination of experiments to work together
correctly, fixing an encode/decode mismatch bug when they
were all enabled.

This change causes build_masked_compound(_highbd) to only
ever be called if CONFIG_SUPERTX is off, so wrap these functions
in an '#if !CONFIG_SUPERTX' block.

BUG=aomedia:313

Change-Id: Ic3886bc69ba9624b8fcb0a4c2d71fc64d2c0f22c

Change-Id: I2a490e144099d7692296992528192c1f11d2c06f

Change-Id: I130f748c076a1642f12b95051dab19bfdac5b855

Now that https://aomedia-review.googlesource.com/#/c/6729/
has been merged, build_intra_predictors_for_interintra() is
now redundant, so replace it by a direct call to
av1_predict_intra_block() and remove the old function.

Reset rect_interintra back to 1.

To do this, we need to make the intra predictor take a
BLOCK_SIZE instead of a TX_SIZE. This is because we need to
be able to predict 32x64 and 64x32 blocks, but there is no
TX_32X64 or TX_64X32.

No effect on output or performance.

Change-Id: I8c185a211c97a85012cc54ec293c785a693608ed

Change-Id: Ibec40c3cd8e14343b096e406ba233cf4f131e7b9

Resolve the broken coding pipeline in ext-inter experiment when
cb4x4 mode is enabled. Turn off rectangular inter-intra mode.
This needs some more work to hook up. Given that it gives fairly
limited coding performance gains, disable it for the moment.

BUG=aomedia:309

Change-Id: I9b406df6183f75697bfd4eed5125a6e9436d84b0

This follows the naming for the other frame types, and allows libaom
to be compiled against other libraries that also #define NONE.

Change-Id: Ic2e2814587bbc5ea67385a9af775396d29b7dde0

BUG=aomedia:142

Change-Id: Id21dd2d19e1e46a9225cd5f8f8b0705ae178118c

By turning on CONVOLVE_POST_ROUNDING, in the compound inter
prediction mode, FILTER_BITS rounding is moved after the summation
of two predictions.

Note that the post rounding is only applied on non-sub8x8 block

       PSNR     BDRate
lowres -0.808%  -0.673%

Change-Id: Ib91304e6122c24d832a582ab9f5757d33eac876c

Make non-causal obmc option works in the cb4x4 mode.

Change-Id: If470ab61166752efc72719f9cd3e440560de1d51

This commit makes the motion-var support cb4x4 mode. It resolves
the encoding failure issue when both experiments are enabled.

BUG=aomedia:136

Change-Id: I2fa963d62cbdd24cc54d5a95d02f2dc226e6d2d0

Separate prediction code and parameter generating code.
This will not change bitstream statistics.

Change-Id: I194480166d3f8641592e53683029be1d466cfba9

At the final round of encoding of each superblock, will go through
each prediction block to check if ncobmc mode is better than non-
overlapped prediction. Note that causal obmc mode is dumped here.

PSNR gain (MOTION_VAR + NCOBMC): -2.845% lowres

Change-Id: Ibe504f7f1882446a08ba426e1e9824bca73bf655

These are under EXT_TX + RECT_TX experiment combo.

Results
=======

Derf Set:
--------
All Intra frames: 1.8% avg improvement (and 1.78% BD-rate improvement)
Video: 0.230% avg improvement (and 0.262% BD-rate improvement)

Objective-1-fast set
--------------------
Video: 0.52 PSNR improvement

Change-Id: I1893465929858e38419f327752dc61c19b96b997

Those functions includes
av1_make_inter_predictor
av1_build_inter_predictor
inter_predictor

Change-Id: Ide3b744277cf30964e8b352fc8de91365d7217a8

Adds a few options to make the compound mask lightly dependent on the
the two predictors.

Also adds high bit depth support

Change-Id: If57b6e8ddd140e0c00fd9d4738927d37225091cb

Change-Id: Id2537c8826e07ad6605aaa9858ba6d797bcd23a5

Change-Id: I7c992c9aae895aebcfb5c147cb179cf665c0ac10

Change-Id: Iab1217c7eb006c72e86e4261576b775b7debafd3

This commit allows the sub8x8 blocks to compose and filter their
chroma components for supertx in cb4x4 mode. The coding gains of
supertx and cb4x4 are largely additive:

          supertx      cb4x4       cb4x4 + supertx
lowres     -1.0%       -2.7%        -3.64%
midres     -0.8%       -1.3%        -2.10%

Change-Id: Ie7d09f6fceb36ce375e56773728f05dd628786fe

This allows the cb4x4 mode to work with ref-mv and supertx modes.

Change-Id: Ib9747d2c8a2b036fb246ca04bf7cc8c8f40931bf

This commit makes the cb4x4 mode support supertx operation.

Change-Id: I1a713b2268c1029aebeb43aa6aeb0fa37b16810f

Replace hard coded numbers with table access. Avoid comparing
values from different enums.

Change-Id: I43216db4a9b13ee317e8e517683946f526e5ca0e