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This will allow the mrc-tx experiment to pass in its own color map
and set of probabilities to the tokenize and bit packing functions.
The corresponding change on the decoder side will come in a followup
shortly.

No change in performance.

Change-Id: I1872b7f1b1cf5b102e6289388ce1ae449e67cb4d

BUG=aomedia:685

Change-Id: I8490af713c53e8c420ef9dffa7c27bb71bbfca54

This experiment has been adopted as it has been cleared by Tapas.

Change-Id: I0682face60f62dd43091efa0a92d09d846396850

This experiment is now adopted as it was cleared by Tapas.

Note: Palette use can still be controlled by command-line option
"--tune-content=..." in 'aomenc'.

Change-Id: I832f49f20f60c34bdef5b424755849c496687e87

Also add another default probabilities and for two-modes

Change-Id: Ia503301e6d8e89c8d7c945ff25588807107d4807

Change-Id: I0c3772110e9fa62ac687bd99e290b5006bf3bd6c

Expand the range of alpha to [-2, 2] in Q3.
Jointly signal the signs, including zeros.
Use the signs to give context for each quadrant
and half-axis. The (0, 0) point is excluded.
Symmetry in alpha_u == alpha_v yields 6 contexts.

Results on Subset1 (Compared to 9136ab7d with CFL enabled)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0792 | -0.7535 | -0.7574 |  -0.0639 | -0.0843 | -0.0665 |    -0.3324

Change-Id: I250369692e92a91d9c8d174a203d441217d15063
Signed-off-by: David Michael Barr <b@rr-dav.id.au>

CfL is now an independent mode.

Results on Subset1 (Compared to 4266a7ed with CFL enabled)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.1645 | -0.4017 |  0.2475 |  -0.1851 | -0.2179 | -0.2338 |    -0.2897

Change-Id: I2e86e7ea7bfc12bb1d763e70a136ca992d57a3c5

Make CDEF select filter strength every 64x64 block when block size
could be larger than 64x64.

With/without this patch, coding performances on AWCY and Google
test of lowres and midres are neutral.

BUG=aomedia:662

Change-Id: Ief82cc51be91fc08a7c6d7e87f6d13bcc4336476

A separate prediction mode struct is added to allow
for uv-only modes (like CfL). Note: CfL will be
added as a separate mode in an upcoming commit.

Results on Subset1 (Compared to 4266a7ed with CfL enabled)
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

Change-Id: Ie80711c641c97f745daac899eadce6201ed97fcc

This CL adds an extra alt-ref reference frame, namely ALTREF2_FRAME,
and designs the contexts for ALTREF2_FRAME.

Change-Id: I12fe8629b868aebf6c2b54260fca5abc38f90ae6

New deblocking filter that smooths block boundaries in an estimated
direction of object orientation.

1. Select the proper direction for deblocking filtering.
Compute abs gradient line by line for the block.
Select the direction with least sum of abs gradient.

2. Apply deblocking filtering for a block along this direction.
Apply directional filtering for Y, U, V planes.

Coding gain on Google test set:

%	  	avg_psnr   ovr_psnr  ssim
lowres  	-0.129 	  -0.136    -0.277
midres  	-0.103    -0.127    -0.188
hdres	  	-0.159    -0.158    -0.173
screen_content  -0.408    -0.397    -0.695

Change-Id: Ie8646dcc163ace5d8faf5e502b38342d885efc30

This adds the new transform to the list of possible transforms.
The impact on performance is in the noise range because the transform
implementation currently performs DCT as a placeholder. This transform
will initially only have an implementation for TX_32X32 and it is
skipped in the tx search for smaller transform sizes.

Change-Id: Iab2faddc525b478ca06972a753428a4f4ef53ac6

Added a 1-bit flag 'large_scale_tile'. If it is 0 that is the default value,
use normal tile coding in TILE_GROUPS. If it is 1, use large-scale tile
coding in EXT_TILE.

At large_scale_tile=1 case, if single-tile-decoding is required, then the
loopfilter is disabled.

Related API and unit tests were modified.

Change-Id: I3ba12dc3d80ccf1ab21543ab3b16c02282c34e3b

This patch adds support for 4:1 rectangular blocks to various common
data arrays, and adds new partition types to the EXT_PARTITION_TYPES
experiment which will use them.

This patch has the following restrictions, which can be lifted in
future patches:

  * ext-partition-types is incompatible with fp_mb_stats and supertx
    for the moment

  * Currently only 32x32 superblocks can use the new partition types

There's a slightly odd restriction about when we allow
PARTITION_HORZ_4 or PARTITION_VERT_4. Since these both live in the
EXT_PARTITION_TYPES CDF, read_partition() can only return them if both
has_rows and has_cols is true. This means that at least half of the
width and height of the block must be visible. It might be nice to
relax that restriction but that would imply a change to how we encode
partition types, which seems already to be in a state of flux, so
maybe it's better to wait until that has settled down.

Change-Id: Id7fc3fd0f762f35f63b3d3e3bf4e07c245c7b4fa

(1) Work with var-refs to remove redundant bits in ref frame
    coding;
(2) Add a new uni-directional compound reference pair:
    (LAST_FRAME, LAST3_FRAME);
(3) Redesign the contexts for encoding uni-directional reference frame
    pairs;
(4) Use aom_entropy_optimizer to collect stats for all the default
    probability setups related to the coding of reference frames.

Compared against the baseline (default enabled tools excluding ext-tx
and global-motion for encoder speed concern) with one-sided-compound,
the coding gain of ext-comp-refs + var-refs - one-sided-compound is:

lowres: avg_psnr -0.385%; ovr_psnr -0.378% ssim -0.344%
midres: avg_psnr -0.466%; ovr_psnr -0.447% ssim -0.513%

AWCY - High Latency:
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.2758 | -0.1526 | -0.0965 |  -0.2581 | -0.2492 | -0.2534 |    -0.2118

AWCY - Low Latency:
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-1.0467 | -1.4500 | -0.9732 |  -0.9928 | -1.0407 | -1.0180 |    -1.0049

Compared against the baseline (default enabled tools excluding ext-tx
and global-motion for encoder speed concern) without
one-sided-compound, the coding gain of
ext-comp-refs + var-refs - one-sided-compound is:

lowres: avg_psnr -0.875%; ovr_psnr -0.877% ssim -0.895%
midres: avg_psnr -0.824%; ovr_psnr -0.802% ssim -0.843%

Change-Id: I8de774c9a74c20632ea93ccb0c17779fa94431cb

This is intended to be a no-op when scaling is not
enabled, but is expected to result in more accurate
prediction when references need to be scaled.

However note all xs, yx, subpel_x and subpel_y values
are now at higher than 1/16th precision.

Change-Id: I4b22573ea290a31fc58ead980bb0d5e5a9e89243

Prioritize modes that are more likely to be picked. Impact on
compression is neutral. Keyframe encoding speed increases by about 5%.

Change-Id: I57f7481a42b833203e4cfb84806fe755ec37d615

Change-Id: Id5c3df752528a3ea74e655b3d18a5d6f258a2238

Define the syntax and entropy coding templates for
NCOBMC_ADAPT_WEIGHT. The actual values of the default
probabilities and the index tree structure need to
be fine tuned.

In this experiment all mv's in a superblock are sent
first as in the ncobmc case.

Change-Id: I68d50d3d27346c2847ea449a1168c6a99fbb4d3d

cb4x4 itself should not require these sizes.

This simplifies compatibility with other experiments, since we can
first make them work with cb4x4 (which is now on by default), and
then worry about chroma_sub8x8 and chroma_2x2 (which is not) in
separate steps.

Encoder and decoder output should remain unchanged.

Change-Id: Iff2a5494cab3b7d96f881e8bd9cd4bf18c817cfa

The tool of ext-comp-refs adds the uni-directional compound reference
prediction. In details, 3 pairs of uni-direcitonal compound references
are added for the comp ref prediction:
(LAST_FRAME, LAST2_FRAME),
(LAST_FRAME, GOLDEN_FRAME), and
(BWDREF_FRAME, ALTREF_FRAME).

This new tool of ext-comp-refs will eventually overwrite
one-side-compound and have the two coding tools to merge to one.

It achieves -0.35 ~ -0.55% coding gains in BDRate, compared against
AV1 baseline with the default experiments on, but without
one-sided-compound. It achieves -0.2% ~ -0.3% coding gains when
one-sided-compound is on. It achieves larger gains on higher
resolution.

Change-Id: Icbdb16e97b96aaebaf2213f5f72d5331e2e358eb

RESIZE_SCALE_DENOMINATOR and SUPERRES_SCALE_DENOMINATOR were two
constants with the same value that did essentially the same thing.

This patch merges the two into SCALE_DENOMINATOR for simplicity's sake.

Change-Id: I252a9b7f89f10d77bdb0c3cf2d67d31d337afa4b

Unifies the command line arguments for resize and superes.
Removes resize arguments that are currently unused.

Change-Id: I1362dffceb8257cee539f92679d1e8d79df08e66

Adds "superres-mode" and "superres-numerator" arguments to configure
superres scaling.

There are only two modes right now: SUPERRES_FIXED and SUPERRES_DYNAMIC.
0 sets the fixed mode and 1 sets the dynamic mode.

For the fixed mode superres will scale to the provided numerator where
possible. The cumulative scale change over resizing and superres is
limited to 1/2, so it may have to back off.

For the dynamic mode, the provided numerator will be used as the initial
numerator. Asides from that it's just random for now.

Change-Id: Ibae01c77abba2599fbf51096459d09ddca458d4f

Only apply quantisation matrices when the transform is 2D.

Change-Id: Iae9ac910c11199f7944a80d10d334db3b711059d

Now the single ref comp mode should work with WEDGE and
COMPOUND_SEGMENT. For motion_var, the OBMC_CAUSAL mode uses the 2nd
predictor if the neighboring block is single ref comp mode predicted.

This patch removes the mode of SR_NEAREST_NEWMV and leaves four
single ref comp modes in total:

SR_NEAREST_NEARMV
SR_NEAR_NEWMV
SR_ZERO_NEWMV
SR_NEW_NEWMV

Change-Id: If6140455771f0f1a3b947766eccf82f23cc6b67a

Earlier, the condition was negating all non-directional modes to check
if a mode is directional. This was error-prone, e.g. when a new
non-directional mode is added.

By checking for directional modes directly, we avoid such errors.

Change-Id: Ia4a62e278cd73078c53ed5096db646eff77f054e

cb4x4 itself should not require these sizes.

This simplifies compatibility with other experiments, since we can
first make them work with cb4x4 (which is now on by default), and
then worry about chroma_2x2 (which is not) in separate steps.

Encoder and decoder output should remain unchanged.

Change-Id: I4e9fcdae49f238b5099a3c74a398fe993c2545f8

Separate the codes into a table of distinct values
and an index into that table.
Pull the SSE calculation of the RDO loop and avoid
repeating for the same alpha values.

Change-Id: I8c4bd7eab6f8000e6aca9687d9190abc3e270c37
Signed-off-by: David Michael Barr <b@rr-dav.id.au>

Currently the "transform units" used to measure transform sizes
in some parts of the code are based on the smallest defined
transform size.

cb4x4 currently defines a 2x2 transform size, even when chroma_2x2
is not enabled, which means that the scale of the transform units
was always double that of MODEINFO units.

Several areas of the code were hard-coding this assumption instead
of converting from one to the other using appropriate constants.

Change-Id: Ibc55671aa5bc3ad272cb8a036f9c4f9621df85ab

Create named constants for the minimum TX_SIZE used in the luma
plane, as well as the minimum allowed TX_SIZE for which we have to
explicitly code a selection (i.e., one larger than the minimum luma
TX_SIZE).

Then, use these constants consistently with tx_size_to_depth() to
index the tx_size counts in FRAME_COUNTS, and also consistently use
TX_SIZE named constants to index the tx_size_implied counts.

Failing to index these counts correctly can, e.g., cause tx_mode to
be chosen incorrectly.

Change-Id: I706a62a33e2282e67c97a68bade87fb8023ec13b

It gives 0.1% gain on lowres and midres

Change-Id: I555a492a68571c525713840d73aa5614fe80a87d

Improved the performance a little bit compared to using the full set

Change-Id: I28a96459fa77d7e1d5c101d162faa2effd525341

Change-Id: I640cf08ac583ff5092a18e81cd0e33f05609db6b

Use CONFIG_INTERINTRA to properly separate interintra from the basic
ext_inter experiment.
When macro REDUCE_INTERINTRA_MODES is 1, only 4 ii modes are enabled
so as to reduce the complexity overhead.
(Right now the flag is off)

Change-Id: Iec6f36a1000f181adbb822ad66c7d5b2625e9cc7

This has been taken care of already.

Change-Id: I0198fdbcd48fc355013de79644513279c8acb0de

This experiment extends ALT_INTRA by adding two new modes:
smooth horizontal and smooth vertical.

Improvement on *intra frames* in BDRate (PSNR):
===============================================

AWCY (high latency): -0.46%
(Also, -1.0% or more on PSNR Cb,Cr and APSNR Cb,Cr).

AWCY (low latency): -0.43%
(Also, -0.88% to -0.94% on PSNR Cb,Cr and APSNR Cb,Cr).

Google sets:
lowres: -0.454
midres: -0.484
hdres:  -0.525

Improvement on *video overall* in BDRate (PSNR):
================================================

AWCY (high latency): -0.15%

Google sets:
lowres: -0.085
midres: -0.079

Change-Id: I9f4e7c1b8ded1fe244c72838f336103ccc715d50

Change-Id: Id490c57df5dca13c59a62b0a542779784842944c

The angle estimation in ext-intra didn't account for
alt-intra.

Also use c99 variable declaration style.

BUG=aomedia:444

Change-Id: I001b0278eb8cf560975c873a423de024c10d08b4