This commit changes is_inside() function to reduce the code polution
of CONFIG_DEPENDENT_HORZTILES.

Change-Id: Ic065cc337e0246379d87966a49ddeb48b975c5be

Also handle block centers for sub8x8 blocks correctly.

BDRATE: lowres: -1.308%

Change-Id: I6bdb25bdaceb5086a8b951617fd62ed41cd89023

1. Adds a limit on number of candidate samples used for the
estimation.
2. Adds a limit on max mv magnitude for use in the least-squares
3. Makes some of the internal variables 32-bit.

Impact on coding efficiency in the noise range.

Change-Id: I8c1c3216368ceb2e3548660a3b8c159df54a8312

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

Also supports homography models for future experiments.

Change-Id: I4510540f54133e063891ed491c95c087222f7810

Integerizes computation of the least squares for warped motion.
The model is restricted to only Affine. Affine seems easiest
to compute and integerize since it can be split into two 3-dim
least squares problems, as opposed to rotation-zoom which needs
a 4-dim least-squares problem to be solved.
The current implementation requires only one division per block.

BDRATE impact is mminimal. The upgrade to the affine model improves
coding efficiency but integerization also degrades efficiency a
little. Overall there is a net gain of about -0.07% BDRATE on
the lowres set.
BDRATE lowres: -1.113% with ----enable-warped-motion vs. without
(up from -1.044%).

Change-Id: I6b9216ac0737d76f59054293eabee48e17739ec4

Change-Id: I5a2469d10f7295f1b8a6bea64e36b8325c8dca22

This commit enables the motion vector referencing system to use
the motion information of blocks to the bottom and right of the
collocated block. This improves the compression performance by
0.3% for lowres, midres, and hdres sets.

Change-Id: I03b3fb21f3a8698880ca9ceb945fa3e32531acdb

Since gm_get_motion_vector is trying to give a motion vector for
"the frame as a whole", it makes more sense for it to calculate
the motion of the *center* of the block rather than the top-left
corner of the frame.

In theory, this change should also help the encoder make better
decisions on when to use global motion. It avoids an issue
where, early in the frame, NEARESTMV looks like a good way to use
the global motion vector *without* paying the rate cost applied
to the first few global motion blocks in each frame. This seems
to lead to a better overall result.

Change-Id: Ia5c6259ceb8b4ff3d00a5d553e1d18bdb802da59

The reference frame handling in av1_find_mv_refs introduced
in https://aomedia-review.googlesource.com/c/6067/ broke the
compile when global-motion is enabled but ref-mv is not.
This patch adds the missing logic, allowing this case to compile
again.

Change-Id: I914887eb56d28a700b2917d086447bdbb314f35d

Change-Id: I1050b69045407381d4626b65a0bf6f35957a66f4

Set mi_size properly in findSample()

Change-Id: I26bae25bf6300a107108dc5c2b7098e7d7dfa750

BUG=aomedia:314

Change-Id: I66af7f69ca0b97b9d840918a6b9ec34708a7f4e5

Change the list of search offsets searched when ext-partition-types
is on for square block_sizes. This is because the VERTICAL_A and
HORIZONTAL_A partitions are incompatible with the default list.

BUG=AOMEDIA:141

Change-Id: I884c45c3d11039b7dcb72336a928362f926473ed

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

Change-Id: Ieb2922c3df4ef4f8514b8a6df6f9a8fc45ef3cf4

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

When both GLOBAL_MOTION and WARPED_MOTION are enabled, identify
the neighbors using global motion, and generate correct projection
samples, from which the local warped motion is estimated.

Change-Id: I13556a49649208e6f4d30bc570a41074aabc8ae6

This commit allows the dynamic motion vector referencing system to
scale its search range according to the coding block size. This
provides higher search resolution for smaller size coding unit.

The cb4x4 mode improves the compression performance across all the
test sets:

         avg     low    mid    high
lowres   2.8%    2.4%   3.1%   3.0%
midres   1.3%    0.3%   1.8%   2.7%
hdres    0.9%    0.5%   1.4%   1.5%

Change-Id: I1bc501506a9f2f06071c5274391f6bd053b235a7

Take out the functions set for sub8x8 block sizes.

Change-Id: I15836df44051f2c8679c317d52eab9ef55fb5b17

Change-Id: If56a76cee9a5f9ad985019e7059e422445bdab51

Replace hard coded numbers with mi_size table access.

Change-Id: Ia5b8802de9f0128edf2c71542c703f317c7f61da

Make the reference motion vector search range and ranking weight
scalable with the mode_info size. It retains the same coding
statistics.

Change-Id: I238e0ff6032fea842c3b6094287398f7ef7cb261

This accounts for scalable mode_info size and maximum coding block
size.

Change-Id: I82277d09100532d930e13a0a8cbfee33c99e3d64

Change-Id: Ib7807125e533c32dad04b02bc54838dd1e90e8af

Separate the use cases of number of 8x8 blocks from those of
mode_info array. This allows the mode_info array processing to be
scaled to 4x4 resolution.

Change-Id: Iab78f2540355ce7658d9ea21e902a86f71148d8f

This fixes a rare encode/decode mismatch due to inconsistent
rounding of NEARMV/NEARESTMV vs. ZEROMV motion vectors when both
global motion and ref-mv are enabled.

Change-Id: Ia2bbaf63020f5ce7762e027f9bf835fd96797bec

Related to all-zero handling.

Change-Id: I58070aabdcb7ef03ae587c26ffaff5c908db91a4

Change-Id: I9b2465807c2dd6e356807f3f3555394b382918ad

Replace the computation of block size in pixels with lookup table
directly.

Change-Id: I39589b2bc1d20372969ff5ad0f60639e64a19b41

Performance gain (REF_MV on by default)
WARPED_MOTION: 1.061%
WARPED_MOTION+MOTION_VAR: 2.917%
MOTION_VAR: 2.337%

Change-Id: I43f742a02cdd43d13ef333a0a15087062ad020ab

av1_find_mv_refs sets the ALL_ZERO flag when either (a) we don't have
enough candidate MVs, or (b) all candidate MVs are zero. With global
motion enabled, case (b) does not work as intended and causes two
problems: a significant quality decrease for foreman_cif.y4m, and
test failures in *CpuSpeedTest*Screencast*.

This patch skips check (b) when global motion is enabled, fixing
the above bugs.

Change-Id: I7461588cb02733563c1439f430b89190299a1b5d

simp_mv_pred is now merged into ref-mv, this commit removes the code
that is leftover. Removing them fixes compiler warnings.

Change-Id: Iad0c521d10924d0eeeaad0b5022beddf9d2bacce

Merge the modifications in simp_pred_mv to ref_mv.

Change-Id: I5662124c1ac7133d76697522f06e42b277a4ad8d

This removes the dependency of context decoding from the candidate
list ranking in hardware implementation.

Change-Id: Iff34e7e6e78c9b32f435ded30629e43e73ac2f13

Replace the int_mv storage in the ref_mv_stack struct with unit8_t
integer to indicate the prediction difference level.

Change-Id: I0bfbcab350a46ecdd5bc47bd918cce9614365227

Change-Id: Ibc9e904ba9e82d6ab638d88404847da7fc9fcce9

BUG=aomedia:80
BUG=aomedia:88

Change-Id: Ia8cd086ea1568235baf7c2fba2edd5a0e41af584

If a coding block is in the top row of a 64x64 (or 128x128) block,
its top-right corner should be available. No major coding performance
change is observed.

Change-Id: I0ee23db313cd53b34b7bc28230705f1cb1f8fe89

missed in:
9abdec64 simp-mv-pred integration with ref-mv

Change-Id: Ib155fb418ec77c1e53ca25b6654a4a47d0d2110e