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Use 2x2 inter prediction for chroma component. This improves the
compression performance by 0.6% for lowres.

Change-Id: If9d98e49cee63f40085b179652bfacc31ff462ea

Warped_motion doesn't go through inter_predictor() function to
generate prediction where convolve_round is activated.
Therefore, we could avoid doing post rounding when the
warped_motion mode is on.

We use do_post_rounding to indicate whether post rounding is
needed
Change-Id: Ib17a0c0d4e6e5232e9682afa8cfdb9576f5cf4c0

Change-Id: I48a2148854e2abd0a3cc66aef58bb6a5d77c8b59

Change-Id: Ieeb044d2b008c409faf7fa5d7253ad2d8f326ca4

This fixes a mismatch which occurs when global/warped motion and
a masked compound type are used together.

Change-Id: I08b2702cdb3b85f8d8817b9286a73951c97cf379

BUG=aomedia:490
BUG=aomedia:491
BUG=aomedia:494

Change-Id: I20a375dc6f76a3f3de520e452b3b9b0d4ace0ee0

Offset the buffer pointers of sub8x8 chroma components to support
the coding process at bottom right 8x8 block.

Change-Id: Ide17ee31ce064484371194cbbade88603d114a2e

Clarifies in the code that the wedge smoothing
functions can in fact be generated by shift of three 1-D
prototypes. Also changes the smoothing function a little
which gives a slight improvement.
Also includes some generic cleanups.

Change-Id: I5735e0021d50c36c42509d4fc0939e7220564571

Change-Id: I9b6f99768c60e743d2fadfaabc532e7c15dc40f3

This reverts commit 5ca25dfc.

It breaks high-bitdepth builds with:
--enable-aom-highbitdepth --enable-experimental --enable-dual-filter
--enable-entropy --enable-ext-inter --enable-ext-intra
--enable-ext-partition-types --enable-ext-refs --enable-ext-tx
--enable-filter-intra --enable-loop-restoration

or more simply:
--enable-aom-highbitdepth --enable-experimental --enable-ext-inter

BUG=aomedia:463

Change-Id: If814131e634e4411569859f7426efafe158b83fd

Change-Id: I359d100548ed337d643a421591243565b08945ed

Missing features:
* RDOPT (Forced on for certain blocks)
* Any form of border extension
* Non MI sized right and bottom edges
* MV prediction

Present features:
* Force intrabc for some blocks
* Carry intrabc in the bitstream
* Validate DV is causal
* Reconstruct intrabc block assuming border extension is unnecessary

Change-Id: Ib1f6868e89bfacc2a4edfc876485bad1b347263b

This creates a central function which defines when a
block should be warped. It also refactors the
WARPED_MOTION code so that all calls to av1_warp_plane
happen in the same location.

No change in performance.

Change-Id: Icaf9ec7700d34523809258594bb9843bb2975f46

Adds an option to disable warp when obmc is used with a
global motion neighbor.

Change in BDRATE on cam_lowres
gm + obmc enabled: 0.035%
gm + obmc + wm enabled: -0.005%

Change-Id: I1d6de75c7ead325cec31ed3748b5532f3658d8a7

Rename '--enable-aom-highbitdepth' to '--enable-highbitdepth'

Change-Id: I1de13c3508c30c552532993419d8ace326142ab6

The SSE3 convolve functions do not work when scaling is involved. If
either x_step_q4 or y_step_q4 is not 16 scaling will occur and an assert
fails.

This patch creates a C version of av1_convolve, av1_convolve_c. This
function in turn calls all C versions of what av1_convolve calls. New C
versions of these called functions have been created where needed and
the same for the functions they call. This means that when scaling is
enabled no asserts fail. av1_convolve_c is called instead of
av1_convolve when x_step_q4 or y_step_q4 is not 16.

Change-Id: I604d2716e034e23a0553fb7004133d3075514a7a

Adds an option to disable warp when obmc is used with a
warped motion neighbor.
This change will reduce the line buffer requirement for
mode/mv information since the warping parameters no longer
need to be stored.

Results: 0.05% increase in BDRATE on lowres

Change-Id: I98bd2dcdbbcd47e44f199803ed8996b0f3fd1756

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

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

Change-Id: I43207cabac921fee77d19855abe49868dfd98bd1

This CL aim at facilitating hardware implementation
The check will be turned on once we have faster motion vector
coding system

Performance drop
lowres 0.157%
midres 0.260%

Change-Id: Iedc961f44efadfe84ff9edab408f44845bffcfe9

If there no sub-pixel in both direction of MV,
the interp_filter is set to EIGHTTAP_REGULAR

Change-Id: I208c34906544f1937c57d78017999be6eddd9e87

Change-Id: I532e46b3947ca3f5898a2da61fb6b82c2f4bd5c6

This allows Y and UV planes use different filter kernel

Change-Id: I524aa3f6ffbc439acee6660bdbaf5cf2059379b5

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

Change-Id: I9446d43ae2be5a9a48b8a4cb6efcac43df6196d5

The only compound mode used with sub 8x8 blocks is COMPOUND_AVERAGE, so
we don't have to send anything in this case

Change-Id: I90d0162e5f7f1ad205e65094293cde2a48eb77b1

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

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

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

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

Use a round flag in ConvolveParams to indicate if the destination buffer
has the result rounded by FILTER_BITS or not.
This CL is part of the goal of reducing interpolation rounding error in
compound prediction mode.

Change-Id: I49e522a89a67a771f5a6e7fbbc609e97923aecb6

Change-Id: I7c992c9aae895aebcfb5c147cb179cf665c0ac10

Change-Id: I0ebd6951d2b42869ae872b33f63a07db03e99c62

This uses a segmentation mask (which is temporarily computed arbitrarily)
to blend predictors in compound prediction. The mask will be computed
using a color segmentation in a followup patch.
Change-Id: I2d24cf27a8589211f8a70779a5be2d61746406b9

No need of special handle on sub8x8 block sizes.

Change-Id: I8487cd68eda0882fe50550af3998dc941ec13b21