Change-Id: Ieb28f40d85e4db4af33648c32c406dd2931ceb89

Change-Id: I52f204000f5fdaf1c6fff63949d72e858ceea462

Observe 0.1% gain on lowres wo optimize_b before rebase

Change-Id: I0cb5b5e4be2563093efb2f6dfbefdce9b554e910

CDFs are used for coding and costs, so there is no need to
base the CDF on the obsolete tree and remap filter indices.

No change to common test conditions BDR.

Change-Id: I441dd21b127bc07ba33eef8ddcfd147eef21d0d4

Change-Id: I3d6a440b13473b0d1e8b18c6629c7e8e3fb446ae

Change-Id: I7f2c0bfc12451710622161bd52ff689e642d1e52

It's not being used anymore, replaced by the CDF model.
The counters are moved under the entropy-stats experiment, so that they
can be used to tune the default CDF values.

Change-Id: I50cb170c4c8699cf7317fd77853b3fedf2342d3e

Use common structure for inter and intra tx type information when
possible.

Change-Id: I1fd3bc86033871ffbcc2b496a31dca00b7d64b31

Improves keyframe coding by 0.1% on the screen_content testset.

Change-Id: I5793a67eaae21010ef200038af99ebb9029fc770

Replace the truncated geometric distribution model with the grouped
leaves structure for more efficient probability modeling.
Each group has its own Geometric distribution

This give us 0.2% gain on lowres

Change-Id: If5c73dd429bd5183a8aa81042f8f56937b1d8a6a

This patch allows ncobmc-adapt-weight to replace warped-causal,
and also remove transmitting ncobmc_mode_prob in the frame header.

Change-Id: I2713b3abbd28eef8b203637e432eca6a782e3b9a

Change-Id: I0e9df3719e5f9a55e1386afe44851d1707e2e01b

Use adaptive CDFs for coding the palette mode.

Change-Id: Iadbccfea4f4a38f3037814a609adf3f3ae2c835d

Remove the token prob tables and counters.

Change-Id: Ic63d52d80bb922fc10b586c27a20f2378618168c

These are not currently being used for anything so there is
no impact on performance.

Change-Id: Ida4e0afcc10bee665f8daa379314cd18b3a4ea28

Initialize the cdf model for level map syntax elements.

Change-Id: I3865e07c126eb4c856803c12485b05782dea6526

* When wedge and compound-segment are disabled, we don't use
  compound_type_cdf, but it still gets copied around, averaged, etc.
  It's slightly nicer to avoid that when it isn't necessary.

* Fix an anomaly with cb4x4: We had (schematically)
  'if (bsize < 8X8 && CB4X4)', which is backwards when compared to
  other similar conditions elsewhere in the code.
  Change this to 'if (bsize < 8X8 && !CB4X4)" to match other code.

Change-Id: If802cf4f305c30cd642d0d5dd6610b547b52a027

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

Each CDF for partitioning square blocks is initialised from
an entry of default_partition_cdf in entropymode.c. These CDFs are of
different lengths, depending on which partition types are supported by
the block size.

For example, 8x8 blocks have a CDF with only 4 entries (PARTITION_NONE
through PARTITION_SPLIT). Blocks of a size that supports 1:4 and 4:1
partitions have 10 entries. Currently, that's only 32x32 blocks. All
other blocks have 8 entries.

Change-Id: Ie2126b6d41afc0efedcc5b5b37fc1d0427b9a9fa

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>

Change-Id: Ie2c34490dc50cb242bcd701308e6b55243883b15

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

Around 0.9% improvement on screen_content set (encoding 30 frames).

Change-Id: Ic4c9333c9af5993bc41e513b9e766450b3a951eb

An ncobmc mode is selected for each squared block
(if motion_mode == ncobmc_adapt_weight) as opposed
to four in training

Change-Id: I81e5dfca3a6fec5a95c96b17f294530880cf8f88

Use multi-symbol CDF coding instead.

Change-Id: I8a69364c8672474021d2ea5933e344d493186967

Add a new default motion_mode_cdf supporting this
experiment.
Also define the costs for the ncobmc mode tokens.

Change-Id: Iebab044e4a34e3d2a94c18893107d82055cc9c77

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

Removing these flags make the EC_ADAPT experiment an integral part of
 the draft AV1 bitstream definition
This commit has no effect on metrics.

Change-Id: Ice78520935e8bfa9d25cf4b8384a1b872069d09c

AWCY results, 1 frame, tune-content=1

objective-1-fast:
PSNR (Y, Cb, Cr) : -0.26%, -0.24%, -0.26%
PSNR-HVS         : -0.26%
MS-SSIM          : -0.25%

screenshots:
PSNR (Y, Cb, Cr) :  -2.28%, -2.29%, -2.29%
PSNR-HVS         :  -2.30%
MS-SSIM          :  -2.26%

twitch-1 :
PSNR (Y, Cb, Cr) : -0.73%, -0.73%, -0.73%
PSNR-HVS         : -0.75%
MS-SSIM          : -0.74%

Change-Id: I7aac475710ab3895778d7ff05d9113f5713133b1

Remove deprecated tree coding when EC_ADAPT is on.

AWCY, objective-1-fast, High Latency:

PSNR (Y, Cb, Cr) : -0.10%, -0.40%, -0.37%
SSIM: -0.11%
PSNR-HVS: -0.07%
MS-SSIM: -0.06%

Change-Id: Ic2d436e037312e1af238a8586983f1288a9a95a8

Change-Id: Iea00482779cd3fdc7f354d5c39684dd0752d0849

Change-Id: I9c8201c7053dba11e9ac0f02c1bffbb4a322e654

BUG=aomedia:630

Change-Id: Idf39c702dfee4fe35f2b0e768cf60f27ed7db08b

AWCY, objective-1-fast, High Latency :
-0.14% all metrics with NEW_MULTISYMBOL on (reference
    with NEW_MULTISYMBOL off).

Change-Id: I7cb3d05977d5e424fd38a40ab558c87c5d811f14

Use CDFs to code intrainter_mode instead of deprecated
tree coding.

AWCY, objective-1-fast, High Latency :
-0.02% all metrics, standard configuration

Change-Id: I839eec7cae9783e28d2018511989b7b56dc948a5

This syntax element was encoded using legacy tree encoding, and is
used in the compound_segment and wedge experiments.

AWCY: -0.01% all metrics (objective-1-fast, High Latency)

Change-Id: I3771ed27e13dd74841c615bec4c2918d39b76093

Replace deprecated tree coding when EC_ADAPT is on.

AWCY: -0.01% all metrics.

Change-Id: I021dbc1e5f2a64fec66da1a427a0bf930cfed292

This commit has no change to metrics.

Change-Id: I363f18698117dc9c3de10e3ae46cbc5a6ce840d0

When EC_ADAPT is enabled, this patch removes all probability tables
 associated with coding intra tokens.
This commit has no change to metrics.

Change-Id: Ie74dd330984fd97b283ef8f8f2c053379f037d9f