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This commit ports a CLPF change from aom/master by manually
cherry-picking:
7560123c

Change-Id: I61eb08862a101df74a6b65ece459833401e81117

Change-Id: I134d276234b3b8aa7df1ab647892b5d739647f4c

Refactor to streamline the number of profiles needed, in
preparation for the next steps.

NO change in performance.

Change-Id: I753b89299897857f3c250c316b4cdc4fedcb90e8

Cherry-picked from aom/master:
e2721a65

Change-Id: I4ade58be91e7bca0cc4f2bed98a43177d7f590a5

Streamilines the functions and data structures to make it
easy to add new restore options.

Change-Id: Ib00638a5749e6c38c2455f3e3142b1025e6e0624

Change-Id: I186e90d99cd54e66d38159b7cb55a881226b1568

Includes a major refactoring/enhancement to support
tile-adaptive switchable restoration. The framework can be
readily extended to add more restoration schemes in the
future. Also includes various cleanups and fixes.

Specifically the framework allows restoration to be conducted
on tiles such that each tile can be either left unrestored, or
use bilateral or wiener filtering.

There is a modest improvemnt in coding efficiency (0.1 - 0.2%).

Further enhancements will be added subsequently to improve coding
efficiency and complexity.

Change-Id: I5ebedb04785ce1ef6f324abe209e925c2d6cbe8a

Change-Id: If22018f8911d9d7ee99c2127bdfcc56e42b0e2d7

cherry-picked #ecd07473 from aom/master

Change-Id: Id8f45d9c11406fc301b39801c5228ccd6aa2d5d6

cherry-picked #14ed7a61 from aom/master

Change-Id: I077b0e97186bdd292f925e08966a2ca3cf8c250d

this matches style guidelines and stabilizes successive runs of
clang-format across the tree. remaining types should be address in
successive commits.

Change-Id: I6ad3f69cf0a22cb9a9b895b272195f891f71170f

This allows for a clean subtraction of 1 along the transform
matrix diagonal and also makes the order of the parameter list
a little more intuitive.

Change-Id: I6a5d754af41b8d1292f241f9b21473160517d24f

Bitstream syntax:
For a rectangular inter block, 'rect_tx' flag is sent to indicate if
the biggest rect tx is used. If no, continue to decode regular
recursive tx partition.

Change-Id: I127e35cc619b65acb5e9a0717f399cdcdb73fbf0

Uses an array to map block sizes, y tx sizes, and subsampling
factors to various transform sizes for UV.

Results improve by 0.1-0.2%

Change-Id: Icb58fd96bc7c01a72cbf1332fe2be4d55a0feedc

Change-Id: I2b2b70e756b7eb9611b7b33b7d5f19b3b30e0a50

This patch completes the global motion experiment
implementation. It modifies the format of the motion
parameters to use the mv union to facilitate faster
copying and checks for parameters equal to 0 that occur
frequently in rdopt. The rd decisions for the global motion experiment
have also been added to rdopt.
Change-Id: Idfb9f0c6d23e538221763881099c5a2a3891f5a9

Change-Id: Iead3edd8563d7900481eb199e8b003d2d3df075b

Function ans_read_int() takes int as parameter, this commit uses an
explicit conversion to avoid MSVC building warning.

Change-Id: Ia405e1d5a86c0f42932fa1da29417ccbf2dd58e7

Cherry-Picked the following commits:
0defd8f2 Changed "WebM" to "AOMedia" & "webm" to "aomedia"
54e66767 Replace "VPx" by "AVx"
5082a369 Change "Vpx" to "Avx"
7df44f17 Replace "Vp9" w/ "Av1"
967f722f Remove kVp9CodecId
828f30ce Change "Vp8" to "AOM"
030b5ffc AUTHORS regenerated
2524caee Add ref-mv experimental flag
016762be Change copyright notice to AOMedia form
81e55269 Replace vp9 w/ av1
9b94565b Add missing files
fa8ca9f2 Change "vp9" to "av1"
ec838b76  Convert "vp8" to "aom"
80edfa01 Change "VP9" to "AV1"
d1a11fb9 Change "vp8" to "aom"
7b582513 Point to WebM test data
dd1a5c8d Replace "VP8" with "AOM"
ff00fc0f Change "VPX" to "AOM"
01dee0bb Change "vp10" to "av1" in source code
cebe6f0c Convert "vpx" to "aom"
17b05679 rename vp10*.mk to av1_*.mk
fe5f8a8a rename files vp10_* to av1_*

Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419

Manually cherry-picked commits:
ceef0583 libvpx->libaom part2
3d26d916 libvpx -> libaom
cfea7dd7 vp10/ -> av1/
3a8eff73 Fix a build issue for a test
bf4202ed Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc

Frame can be split into rectangular tiles for application of separate
bilateral or Wiener filters per tile. Some variable names changed for
better readability.

Change-Id: I13ebc4d0b0baf368e524db5ce276f03ed76af9c8

Adapt rectangular txfm experiment to syntax/tokenization/loopfilter
framework of VAR_TX

Change-Id: Idcb005ecf5b3712de3e1cccb0d811ca16d87af24

Change-Id: I02f44713b99284092ecfc50ce7ab268e91d2c6f8

after:
253c001f Port dering experiment from aom
72081457 Adding 8x16/16x8/32x16/16x32 transforms

Change-Id: Id93e0d7b72a128701d8dec35fc2fac473944d0c1

BUG=webm:1275

Change-Id: I7d4bbaaf2f2146b023e1902fbc535a70e490cf2d

This was originally subtracting 1 from the wrong element in the
parameter set.

Change-Id: I790aafc505f7a8fe7bb00d7d6c62549487a0980f

Mannually cherry-picked:
15791332 Use OD_DIVU for small divisions in temporal_filter.
03122298 Replace divides by small values with multiplies.
9c48eec7 Removing divisions from od_dir_find8()
0950ed82 Merge "Port active map / cyclic refresh fixes to vp10."
efefdad7 Port active map / cyclic refresh fixes to vp10.
1eaf748c Port switch to 9-bit rate cost to aom.
0b1606e7 Only build deringing code when --enable-dering.
e2511e15 Deringing cleanup: don't hardcode the number of levels
8fe5c5d6 Rename dering_in to od_dering_in to sync with Daala
4eb1380d Makes second filters for 45-degree directions horizontal
7f4c3f58 Removes the superblock variance contribution to the threshold
3dc56f93 Simplifying arithmetic by using multiply+shift
cf2aaba9 Return 0 explicitly for OD_ILOG(0).
49ca22aa Use the Daala implementation of OD_ILOG().
85187243 Fix compiler warning in od_dering.c.
485d6a69 Prevent multiple inclusion of odintrin.h.
51b7a998 Adds the Daala deringing filter as experimental

Note that a few of the changes were already in libvpx codebse.

Change-Id: I1c32ee7694e5ad22c98b06ff97737cd792cd88ae

Manually cherry-picked following commits from AOMedia git repository:
bb2727c2 Sort includess for "clpf.h"
c297fd00 Add quantisation matrix range parameters.
0527894f Add encoder option and signaling for quant matrix control.
4106232b Turn off trellis coding for quantization matrices.
4017fca3 Modify tests to allow quantization matrices.
1c122c24 Add quant and dequant functions for new quant matrices.
95a89994 Enable CLPF
f72782bb Fix a build issue
73bae509 Add quantisation matrices and selection functions
33208d20 Added support for constrained low pass filter (CLPF)

Change-Id: I60fc1ee1ac40e6b9d1d00affd97547ee5d5dd6be

Change-Id: Ie4d7ecb2f692c1c43eff1242e1f00e7fbae00e57

We have renamed following Macros to avoid name confusion:

REFS_PER_FRAME --> INTER_REFS_PER_FRAME
(= ALTREF_FRAME - LAST_FRAME + 1)
MAX_REF_FRAMES --> TOTAL_REFS_PER_FRAME
(= ALTREF_FRAME - INTRA_FRAME + 1)

INTER_REFS_PER_FRAME specifies the maximum number of reference frames
that each Inter frame may use.
TOTAL_REFS_PER_FRAME is equal to INTER_REFS_PER_FRAME + 1, which
counts the INTRA_FRAME.

Further, at the encoder side, since REF_FRAMES specifies the maximum
number of the reference frames that the encoder may store, REF_FRAMES
is usually larger than INTER_REFS_PER_FRAME. For example, in the
ext-refs experiment, REF_FRAMES == 8, which allows the encoder to
store maximum 8 reference frames in the buffer, but
INTER_REFS_PER_FRAME equals to 6, which allows each Inter frame may
use up to 6 frames out of the 8 buffered frames as its references.
Hence, in order to explore the possibility to store more reference
frames in future patches, we modified a couple of array sizes to
accomodate the case that the number of buffered reference frames is
not always equal to the number of the references that are being used
by each Inter frame.

Change-Id: I19e42ef608946cc76ebfd3e965a05f4b9b93a0b3

The gm parameters need to have WARPED_PRECISION_BITS precision
until they are written to the bitstream because functions in
reconinter use these parameters before they are written to
the bitstream. Previously, the parameters weren't being converted
to WARPED_PRECISION_BITS until they were read from the bitstream
which causes an encode/decode mismatch.

Change-Id: I31e76e9d6f7d24df21af287a72f8c01f1997304d

Manually cherry-picked the following changes:
8c8d16de vp9 -> vpx in names
75b57d39 VP9_ -> VPX_ in function names
761a7088 VP9_INTERP_EXTEND -> VPX_INTERP_EXTEND
4273a52c VP9->VPX in border pixel macros
03568c31 VP9_FRAME_MARKER -> VPX_FRAME_MARKER
2334f51d VP9->VPX in fdct function names

Change-Id: Icc18dbf4b416dd0fa21033b3e19ab8a47c893508

Change-Id: I9cd355a3ea344ef66a61028efa25d94f54e7e2bd

Added a new expt rect-tx to be used in conjunction with ext-tx.
[rect-tx is a temporary config flag and will eventually be
merged into ext-tx once it works correctly with all other
experiments].

Added 4x8 and 8x4 tranforms for use initially with rectangular
sub8x8 y blocks as part of this experiment.

There is about a -0.2% BDRATE improvement on lowres, others pending.

When var-tx is on rectangular transforms are currently not used.
That will be enabled in a subsequent patch.

Change-Id: Iaf3f88ede2740ffe6a0ffb1ef5fc01a16cd0283a

This makes it easier to interface between global motion and warped motion

Change-Id: I850e0a383969a1973f03fb207f100713cda6bb51

Currently nothing is implemented to compute GM parameters, this
just adds the capability to send them in the bitstream if they
were computed. Still need to implement the reconstruction
based on the parameters in reconinter.

Change-Id: I72aea3c6a9de9f5a40f96da76c82b54a52781fe2

These are needed for the warping function in the global motion
experiment.

Change-Id: Iaab176d0c0b90f6b938e2bac48b24c07e87e3cd9

Use vpx_blend_a64_hmask and vpx_blend_a64_vmask to speed up
computing the obmc predictor. Clean up calc_target_weighted_pred.

Encoder speedup: 1.3%
Decoder speedup: 6.5%

Change-Id: I0c774fe53d22399e92a10d1daf3af0010d88d2c5

Originally we need to send the refresh flag and the virtual indices
mapping for the reference frame buffer update for show_existing_frame to
have the BWDREF_FRAME replace the LAST_FRAME.

To remove sending this information, we update the the virtual indices
of the reference frame buffer after the last_bipred_frame is encoded,
and therefore the decoder will receive the updated reference mapping
at the next non-show-existing frame.

As a result, we can save 4 bytes per show-existing frame, and get 0.12,
0.2, and 0.07 BDRATE improvement in lowres, derf, and midref test set
respectively.

Change-Id: I63d41ee6ea99884798f0778b789d2701e2f2d3e0

Also extends quant profiles to include quality range.

Change-Id: Ia96e45b6425e1d42ca61fc401f63d4fd7214e448