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This experiment has been abandonned.

Change-Id: Ieabc6f365651e2d116a4505a3cc202add94d1386

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I02ed47186bbc32400ee9bfadda17659d859c0ef7

BUG=aomedia:992

Change-Id: Ifcaedaf312f056fcc29e6a8e020aac0ddc52affd

This name better reflects the functionality of the mode.

Change-Id: Idc2372e7c7b226f70f63fa4f272a88cb4d857089

The speed feature simply restricts the number of depths
searched. Currently it is turned on by default for speeds>=1.
The coding efficiency impact (tested on lowres 30 frames) seems
to be ~0.15% and the speedup is in the order of 15%.

Change-Id: I514832bd7df937292875f73d9c9026e49ac576f2

USE_UNI_COMP_REFS is always true when ext-comp-refs is enabled and is
always false otherwise.

Change-Id: Ic6061a4ab88a2ebfeb11f178872ab13909060c0b

BUG=aomedia:992

Change-Id: Ibac542608d9abd669d0e8cf871960b2cf0a6da6a

This addresses an inconsistency between the set used
to decode the tx_type in the bitstream and the set used
for the tx_type search. Previously, the set used to
read/write the tx_type was based on the smallest tx_size
in the vartx partitioning, but the search uses a set
based on the largest possible tx_size. This patch
changes the tx_type search to use the transform type
set associated with the tx_size 1 recursive level down from
the max square tx_size to make the search more consistent
with the bitstream syntax. If a tx_size is selected for an
invalid tx_type, DCT_DCT is used for that partition instead.

This patch also adds assertions to all exposed transform
functions to ensure that no illegal transform type/size
combinations occur.

This currently gets a 0.1% drop in performance on lowres.
The drop is due to the reduction of the tx_types available
for 32x16 and 16x32 transform sizes. Before this patch,
32x16 and 16x32 transforms were getting assigned a
set of 12 tx_types, some of which we did not intend to
support for these sizes.

Change-Id: I44aca4876b261c345623cd04ad6235bca4532701

Change-Id: Icbedc16b01adf9b48f0f357ec89143462865d54e

Always at least set the first row and the first col, otherwise will
have unattended entries if we enable 4x16 or 16x4 txs.

Change-Id: I403ea3694ccf8c7ee1584f55bbc3e9b8355d9272

At the frame header level, add the checking on whether an inter-coded
frame allows the use of 'skip_mode'. At the block level, add the
decoding of 'skip_mode' for all the blocks if 'skip_mode' is allowed
for the current frame. If 'skip_mode' is set, no further bit needs to
read out, and the block is set as:
- Inter-coded in compound mode;
- With the nearest forward and backward reference frames;
- In NEAREST_NEARESTMV mode;
- In SIMPLE_TRANSLATION motion mode;
- In COMPOUND_AVERAGE compound type; and
- Skip set for residual.

Change-Id: I50297f63a81135109332c4a51b516bffd7726777

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I54fee8a18afaec5333ae852eb6bd9ac0e2550db1

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I2dce80e1e1b2116708b6ba9feeacaacc12af8fc4

Change-Id: I39cfbb135add0553cadf64481b13786831fbdddd

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I9c9d6ef5317798cbf237307a9754fe7e03bdda47

Change-Id: I0cc53a03f07a11a6f7ea0570ff4ee8cf7c18c5aa

Support compound_segment and wedge.
JNT_COMP is a competitor to compound_segment and wedge. They are
mutually exclusive.

Change-Id: Id93c36de44a69008182424f40325e42e699bedcd

For ext-intra direcation intra modes:

1. Use neighbor block modes to modify edge filtering strength
   Coding gain (lowres/midres/hdres):
     (8 keyframes)
     PSNR: -0.19 -0.22 -0.10
     SSIM: -0.29 -0.27 -0.13

2. Use context-based cdf to code angle_delta syntax
     (8 keyframes)
     PSNR: -0.20 -0.24 -0.27
     SSIM: -0.29 -0.33 -0.37

3. Filter corner sample:
     (8 keyframes)
     PSNR: -0.01 -0.02 -0.05
     SSIM: -0.03 -0.04 -0.05

Combined Bd-rate improvement for 8 keyframes
     PSNR: -0.40 -0.47 -0.40
     SSIM: -0.57 -0.60 -0.51

Change-Id: Id47ac17b6bf91cd810b70cacfc5b457341f417f3

Clamp in range [-MAX_LOOP_FILTER, MAX_LOOP_FILTER], for experiment LOOPFILTER_LEVELS.

BUG=aomedia:970

Change-Id: Ica52242e969dcea49565f118155de5eef32a4cc4

Let jnt_comp work with compound_segment. When frame distance weights
are used, compound_segment blending is turned off. When normal compound
mode is used, compound_segment blending is searched. The rdcost should
select between {frame distance weights, normal compound,
compound_segment blending}.

Change-Id: I162d1d204ba6a5976538357d9dbc71fc5b1aa8d5

Change-Id: I0e6f7ab981e31f7120105515f6204568b6dc82d3

When needed, fallback regular interp filter at reconstruction stage.

Such bitstreams are valid.
However, as we don't expect aomenc to generate them,
print a helper warning.

Change-Id: If30c8d8e478688d142abd857f4c35f3e8c68edb4

Change-Id: Ibfeb424bf0ebab7bbeb69f6f6df24a4f4924ec97

Change-Id: Idfc8ebee2325ab51d962efa5846d54db3e139c23

Reduce number of modes from 10 to 6, and disable fi modes in UV.
To reduce complexity, apply filter directly without subtracting
the estimated means.

Change-Id: Iaf78d92d31e4a7cc30ea7863b57a9611c5f503e6

Change-Id: Id228c94fbe6005ac37a59bb8c23cfb0f95f97af0

This reverts commit 1eac584f.

Reason for revert: As Peter pointed out, reverting motion_mode to SIMPLE_TRANSLATION only at the decoder side could mess up coding of compound_type. We'll fix this issue from encoder side.

Change-Id: Ic9b3b8e0f0d06b22630d5f870a8d9737a596fa22

Modified the copying code and the profiling showed better performance
than previous implementation.

Change-Id: I41f585e0b0eac7a0deb4dec197c178e412a48db9

This experiment has been adopted.

Change-Id: Ife4c18a59791268b7ac0de5a8a08e762a042cae2

Removes a bunch of unused code.

Change-Id: I86bda117d8d455452ee1ee3a2a566742650e05e0

Fallback to default warp params instead.
The extra assignment to DEFAULT_WMTYPE prevents an assertion.

Change-Id: If21a46cbb4cc9761e5c94bd2fcbc3a06342d677d

Change-Id: I91efb93cade65469a2c4e922253b599270b45406

Since CB4X4 is adopted and without it the codec does not work,
it is better to remove it and simplify the code.

Change-Id: I51019312846928069727967e3b2bbb60f0fba80d

Support recursive tx block partition.

On the screen content testset, 0.2% gain for keyframe encoding.

Change-Id: I623e6fbb910fef9c91617e02edf420019f67d189

Change-Id: I9d3f0380865790d8adcb85f03305b193bc1949d7

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I4705652ac8231ee25f960e8096dc97c2aeed1d20

This experiment uses switchable interpolation filter for intra
prediction. Current gain is too small to be useful for AV1.
May explore more for AV2 in the future.

Change-Id: I24ae8c75dc71adf6271eabdb68a81b68a0869fa2

Align all the motion vector storage buffer in 8x8 block resolution.

Change-Id: Iea786db95b2274332a755dc60f66510c068e3dc5

Change-Id: If42a8cf9de9b4be14b4f228c5bf39747eefc168d

While finding the reference MV for a block, if one neighbouring block's
motion mode is warped motion mode, instead of directly adding that
block's MV to the candidate MV list, we use that neighbouring block's
warped motion parameters to compute a MV for the center point of the
current block, and then add that MV to the candidate MV list.

Borg test result:
             avg_psnr ovr_psnr ssim
cam_lowres:  -0.507   -0.514  -0.685
lowres:      -0.114   -0.122  -0.180

The change is added under ext_warped_motion config flag.

Change-Id: I3ce6290a1fd512b613eab5d7620c8bcb08f189a6