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

Change-Id: I755bfb11a57e92e3a68855a53e95efe526f198fd

This commit adds simp-mv-pred experiment. The experiment is to work on
top of ref-mv experiment to save memory bandwidth and reduce the size
of line buffer needed in ref-mv experiment.

When compared to ref-mv, this experiment showed:
low-delay BDR gain: 0.03%
High-delay BDR gain: 0.01%
memory/memory bandwidth saving: 40%
local memory/gate count saving: 20%

Change-Id: Ic4006e041fc58ede411da83d0d730c464ebe1749

This commit fixes the top-right reference block location for block
sizes above 8x8. It improves the coding performance of ref-mv:

lowres 0.08%
midres 0.15%

Thanks to jiafeng@ for finding this issue.

Change-Id: I70750fc7b18bf0126d3e07abc1b63ca5a160193e

the line buffer.

As compared to ref-mv, the results of this integration are:
low-delay BDR gain: 0.03%
High-delay BDR gain: 0.01%
memory/memory bandwidth saving: 40%
local memory/gate count saving: 20%

Change-Id: Ic4006e041fc58ede411da83d0d730c464ebe1749

This commit fixes the top-right reference block location for block
sizes above 8x8. It improves the coding performance of ref-mv:

lowres 0.08%
midres 0.15%

Thanks to jiafeng@ for finding this issue.

Change-Id: I70750fc7b18bf0126d3e07abc1b63ca5a160193e

- Const correctness
- Refactoring
- Make variables local when possible etc
- Remove -Wcast-qual to allow explicitly casting away const.

Cherry-picked from aomedia/master: c27fcccc
And then a number of more const correctness changes to make sure other
experiments build OK.

Change-Id: I77c18d99d21218fbdc9b186d7ed3792dc401a0a0

This commit merge the fix that adds clamping to motion vectors before
they are added to list of MVs in find_ref_mvs().

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1012
Original libvpx commit:
293e20df

Change-Id: I6916a321f374f521187aae96d87bcfd2954db629

When the block has width/height above or equal to 64, use 16x16
block search step for reference motion vector search in the non-
immediate rows and columns.

Change-Id: If11ce97a9328b879f30ef87115086aa0cd985a2f

Use 16x16 block resolution for collocated reference motion vector
search.

Change-Id: I1091b5b178e255eb6cc0b994de360994f7661b79

Change-Id: I9c943e8ca70c8688e27448330b37a2e2f88fde63

Change-Id: I9152f898dfacdf3877ed719f193bb1e0dbee0a1a

This commit merges the misc-fix of removing a duplicate check on MV
values.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=662
Original libvpx commit:
43be86db

Change-Id: Ibb1db543c6641dfd74979b927651c53f62088159