Based on code change in:
https://aomedia-review.googlesource.com/c/aom/+/21140

Change-Id: I771ba6e08259e1c43cb06ebe6436dafe07fdf1d5

Alpha sort the experiments group in
aom_config_defaults.cmake to avoid future duplication
issues, and:

- Remove ALTREF2.
- Remove the duped CDEF line.

BUG=aomedia:813

Change-Id: Ib14172c89dd3934dbf475bbfc581d017acdba2d8

Change-Id: Iee4957038d61c14cf8fa3f9c094b579c82c20603

PVQ has been broken again since the experiment flag for palette is removed
in commit c6300aa1.

As a fix, if PVQ is enabled then disable both of --tune-content=screen and
automatic detection of screen and use of palette coding tool.

Change-Id: Iea6bb042b4402163805c44dabfb3f4c05dfd4e23

Change-Id: I4d6912f3a0df0bdb3f435cc8057b63fbaa3aaa6d

Like for intra block in intra frames, an extra call to
txfm_rd_in_plane is added to the RDO of intra blocks in inter frames.
This extra call is performed using the best parameters found during
RDO and the reconstructed luma pixel are stored.

Results on objective-1-fast (compared to CfL on Intra frames only)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.2497 | -3.5526 | -3.5048 |  -0.2456 | -0.2392 | -0.2508 |    -1.4811

https://arewecompressedyet.com/?job=cfl-no-inter%402017-09-13&job=cfl-inter%402017-09-13T14%3A13%3A13.918Z

Change-Id: I70ea2c01859b6c55d7c3eb9680d492c0bfc2aad4

The subtile and clamping features are no longer used. This patch
removes the dead code that implemented them and the parameters to
support them.

It also changes the return format. Instead of having return type void
and passing data out through 4 output pointers, the function now just
returns a RestorationTileLimits structure. Since the function is
defined inline in a header, I suspect that most callsites will
actually compile to identical code.

There should be no functional change from this patch.

Change-Id: I6ebc4da66a00676bd988f939a4b4957f743e8004

This patch basically just pushes #if CONFIG_HIGHBITDEPTH down past
other #if/#endif blocks, letting us pull out common code instead of
having to repeat it. There should be no functional change (indeed,
there should be no change except whitespace after preprocessing!)

Change-Id: I9bcbfbdec5ad54e42095de085df381e85bf48197

rem_bits-1 not rem_bits should be transmitted so that
2 cannot be coded in two ways.

 BUG=aomedia:811

Change-Id: Iaa0203214bbe6fc6775e05fe4b6e976d568f54b3

For each superblock, its filtering range is shifted up and left by
8 pixels (half of the maximum loop filter length), such that
estimation of deblocking filtering will not cross two superblocks.

Change-Id: I82244b7c26ab8b2ac553037b3bb1fe1d82bf5704

Signal one bit to indicate whether current superblock reuses filter
level of previous superblock.
Try filtering and compute sse using previous filter level and search
the best possible filter level. If their diff is less than predefined
threshold, current superblock reuses previous level. Otherwise,
signal the best filter level.

Change-Id: Ibf125860883b774ef2464b62bb8b799b48258c64

The compressed header is now used only when the refresh
type is set as forward, i.e. in error resilience and
frame parallel modes. As long as backward updates are
used the header is disabled thereby saving bits.

Change-Id: Iee9f66ffbd30ef3552ea41b75e4b51537cd9ff97

Change-Id: Ifb0e4363136779092fcf5e9b27318f1b83df7ad7

Change-Id: Id721adcec7bd260f05690ee26890dd1180a74784

BUG=aomedia:818

Fixing "NIghtly test "AV1/ResizeCspTest.TestResizeCspWorks/0" fails"

The flag was accidentaly turned on in the commit
c00769a9.

Change-Id: I9d7102022fddedc9a3e35ae8086159f06067d21c

Change-Id: Ia58759dec0c6d5e5d0e91166e2abf5204c3217f3

Use them to simplify the body of compare_img in encode_test_driver.cc.

Change-Id: I4fbb4e67917f61f224e3d1b1a6970d10fc3cd777

Change-Id: I3209d0074bf3ed1fda260dc2f5cacbfa616ad6ae

We calculate eob cost in the end of the outer for loop
However, The continue statement from br_node may lead to ignoring
eob cost

Change-Id: Ic80c88e034836eb4dc4ac8b87bf0b7b45bf5d097

This is for reduce memory usage for adapt_scan
The whole change will be under the flage USE_2X2_PROB

Change-Id: If7839d6396dad7618155ef2f36896d17743696ce

Change-Id: I88e425c55b61629430078e11b5b94bac164d027e

Removes setup in compressed header so that the compressed
header can be skipped.

Change-Id: I8d7ed63944a4f75704222f4ad7d0159db1cec0d1

Change-Id: I3d6a440b13473b0d1e8b18c6629c7e8e3fb446ae

Improve dist-8x8 when computing 8x8 yuv dist for sub8x8.

To apply dist-8x8 for sub8x8 partitions, once mode decision for
sub8x8 partitions are finished then dist-8x8 is computed on 8x8 window.
Since dist-8x8 is only for luma, chroma distortion should be identified.

Previously, it has been hard to be free from potential bugs doing this,
due to the complex inter mode search code.

The new method is less-error-prone, which computes uv distortion (in MSE) after
the mode decisions for all of sub8x8 blocks in a 8x8 window are finished,
when the dist-8x8 distortion for luma 8x8 pixels are computed with
new distortion metric.

All the code separating y and uv distortion in inter mode search has
been removed in this commit.

Change-Id: Ieaccb7915df5faeb5e89a7e70b2b7cbac65231af

This patch moves the sb_size to the keyframe header from all frame
headers as discussed in the AOM Codec WG meeting.

Change-Id: Ia0190e57b36b98e51ab61ad4ff14f24f9c294877

Change-Id: I7f2c0bfc12451710622161bd52ff689e642d1e52

Change-Id: Id667950de84ad6a0b55222264a0ce8473cd10bcc

Change-Id: Ib85b2a778e1306444ac0cbbfb212e739a0f0009c

The rd_test_partition3 function basically calls rd_pick_sb_modes on
each of three sub-blocks of a partition (this is one of the mixed size
partitions like PARTITION_HORZ_A) and adds up the cost. There's also
some extra book-keeping to do with stopping early if we know the
partition is more expensive than what we've already seen.

Before this patch, each call and its supporting code was written out
in rd_test_partition3 with lots of repetition (made even more
unreadable because of the #if/#endif blocks). This patch moves the
"per-subblock" logic into a new function, rd_try_subblock, and
replaces the code with calls to that function.

The patch also rewrites the nested conditionals

  if (A) { if (B) { if (C) { X; } } } return;

as

  if (! A) return; if (! B) return; if (! C) return; X;

which means the code for X doesn't need to be so indented.

The patch also uses the new function to replace the bodies of the
PARTITION_HORZ_4 and PARTITION_VERT_4 partition types.

Note that lots of the remaining ugliness is to do with supporting
CONFIG_SUPERTX with ext-partition types. These explicitly aren't
supported together at the moment, so another option would be to rip
out that code entirely.

Change-Id: I9af40d96aa1384f24a088a73a711311638490250

For the first superblock, signal a filter level (6 bit).
For other superblocks, signal the delta (3 bit) and sign (1 bit).
To guarantee the delta can be represented by 3 bits, the search
range of current superblock filter level is capped as
curr_lvl = prev_lvl +- ((1 << 3) - 1)

Change-Id: Ibbe2941aa96ec1220ed2adb7edf3d29cb032f0ec

this was enabled in test.mk in:
c9ac07f6 Re-enable resize test.

Change-Id: I0836e533c77570c5176b2c99fe7a3d19d73ac8af

If dist-8x8 is enabled, it has disabled early-exit during the RD
of sub8x8 tx block in 8x8 or larger partition for plane 0.

However, for the sanity check mode of dist-8x8 which still use MSE,
this can cause different bdrate from the reference (i.e
dist-8x8 off). Hence, if tune-metirc is MSE then
regular early-exit will perform for all cases.

Note that the rd cost used for early-exit condition during tx mode
decision does not include rate for mode itself but only coefficints.
So, when the total distortion for a partition is very small, the rd cost
of mode can exceed that of distortion.

Change-Id: Ie25c64064b78d2d1582dbb0c286212fbc52dbdb9

Function speedup (i7-6700),  sse2 verse C:
Predictor      V_PRED    DC_PRED
4x8            ~1.5x     ~4.9x
8x4            ~2.5x     ~4.8x
8x16           ~1.9x     ~9.1x
16x8           ~1.9x     ~4.4x
16x32          ~2.1x     ~5.8x
32x16          ~2.0x     ~3.6x

Change-Id: I6deffd0637e57ee5d0bd533502f5705148c4cdd4

Change-Id: I24cb257367775608b2b6e4d45d07c30b511af251

Fix the missing the compiler fix in 772cb136.

Change-Id: I2e1d0576964483c7890fb87e3db5451816883b9b

Combine the index and type mapping tables for intra and inter.

Change-Id: I4274f0b5afac26f7e395467bdf5cf18077eacbee

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

Fix a compiler error when both DISABLE_TRELLISQ_SEARCH and dist-8x8
are turned on.

Change-Id: Idd122cb4fc391c449bfcd17ec8406d72ef92d15d

(Fixes sanitizer warning)

Change-Id: I7d6d8bbc38adc0a09f646e3e79569c3ca58643e2