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changes shifts to multiplications

BUG=aomedia:617

Change-Id: I46a7b3b5d566f8c671e54d8cb876cc53fdc5009d

Results on Subset 1 (Compared to a0f8c145 with CfL)

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0677 | -0.3359 | -0.2115 |   0.0529 | 0.0735 |  0.0495 |    -0.0907

Change-Id: Ib61ff862e8cfbdf0c693a4eba5f2712a6e9ab819
Signed-off-by: David Michael Barr <b@rr-dav.id.au>

 CONFIG_DELTA_Q &&
 !CONFIG_EC_ADAPT &&
 !CONFIG_EXT_DELTA_Q

Introduced in
  Ic42f60e19c56db52dd51b3784fd305c7e6b595c7

BUG=aomedia:616

Change-Id: Id0af560914d6b32c467dbb773d9462a089260944

Change-Id: Icfe43e3eda3dcdf5a6d5209e60b842e950655678

Change-Id: Ie720d1befcfe3c77db56bd3313b6e920fd69945c

Change-Id: I702240cde0bd3befa196d722311003758b507c04

fixes compiler warnings in MSVC related to decorated name truncation

Change-Id: I8a46898ac61d97ba3479268f16a93cc5d3169f4b

In 84a44dbe, there was a transcription error in the table.
Point { 5, 3 } was duplicated and { 5, 0 } was missing.

While we are here, updated the order and CDF from subset3.

Results on subset1 (compared to cab68ae6 with CfL)
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
 0.0416 | -0.2732 | -0.3848 |   0.0385 | 0.0309 |  0.0230 |    -0.0178

Change-Id: I3244245792c5ab99b4149ae5f8a2439d4214ed69
Signed-off-by: David Michael Barr <b@rr-dav.id.au>

Change-Id: Ib28bd27d0c2b2e1eb89ef3168b4293f8aa1712bc

CfL performs an extra loop iteration during luma mode selection. Recent
changes have broken the extra iteration. Remove previous approach.

New approach adds the extra iteration right before uv parameter
selection. Interesting fact, If the best luma intra mode already has
worse RD performance than the best inter mode found so far (if any),
then the entire chroma intra search is skipped, including the extra 
iteration.

Results on Subset1 (compared to 3e18e4ae with CfL)

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.3090 | -2.7271 | -2.3521 |  -0.3369 | -0.3463 | -0.3525 |    -1.1868

Change-Id: If67b0badd2c8ea25c61685483d39d622c1729b18

The height padding offset was computed from the beginning of the pixel buffer
and not the current position in the pixel buffer.

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.0000 | -0.0001 |  0.0002 |  -0.0000 | -0.0000 | -0.0000 |    -0.0002

Change-Id: Id20ec3a6395b11d0258ec1e100890fe4701b820c

Updates to intra-edge experiment

- Convert VP9-style intra pred to Ext-intra style
- Upsample edge predictors by 2x based on angle and edge size

BD-rate, 1-kf AWCY
  360p:  -0.11%
  720p:  -0.54
  1080p: -0.96

Change-Id: Ib73805d31d5d286e607a7ee7470fcbdf11edbbff

This reverts commit 79b78b7d.

The transform coefficient range needs some more tuning.
Before we finalize on that front, directly applying clamping
would cause multiple unit test failure issues. Hence revert
this Cl temporarily.

BUG=aomedia:612

Change-Id: I1dd8680dee17289801c4a209275f05a498355c8e

BUG=aomedia:614

Change-Id: I8aab46954af9d6c6d31aba0bd96d6eb9f181b84c

for chroma plane, when mapping from pixel location to the mi_row
and mi_col, need to consider sampling ration of the chroma plane.

Change-Id: I7a369fd6a5c6c4dc5495da64d83f90a532de7ad5

Extract the compution of the luma reconstructed average out of cfl_load
and into cfl_compute_average. The reconstructed luma average is stored
in the CFL_CONTEXT to avoid computing it for each transform block and
for each plane.

Results on subset1 (compared to 803bea26 with CfL)
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0474 | -0.1486 | -0.2931 |  -0.0358 | -0.0397 | -0.0127 |    -0.1162

Change-Id: I9e34af0fe5961ce8dbe70cb80aea2a16221d0d92

Account for the scaling factors in coefficient range of identity
matrix.

BUG=aomedia:612

Change-Id: If3e9669b72797862e6af65a943f2054ae34430ae

They do not handle border extension correctly (interpolation and
border extension do not commute unless you upsample into the
border), nor do they handle crop dimensions that are not a multiple
of 8 (the upsampled version is not sufficiently large), in addition
to using massive amounts of memory and being a criminal waste of
cache (1 byte used for every 8 bytes fetched).

This commit reimplements use_upsampled_references by computing the
subpixel samples on the fly. This implementation not only corrects
the border handling, but is also faster, while maintaining the
same quality.

HL AWCY results are basically noise:
    PSNR | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
  0.0188 |   0.0187 | 0.0045 |  0.0063 |     0.0228

Change-Id: I7527db9f83b87a7bb8b35342f7e6457cd0bef9cd

Change-Id: Ic328d112a4f950396d60113cf1b0f50e96fdfebf

BUG=aomedia:607

Change-Id: I5a5fb893f0237e7ca6e0d807e825f8d4e26949b2

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

Change-Id: Id9c025febf21aeb67cbc719f585661b715bdb9ce

Resolve enc/dec mismatch due to recent changes on low-bitdepth
flag.

BUG=aomedia:611

Change-Id: I833d30517edbab7bb19949cea8d1f7553c0babb5

Turning off the trellis optimization gives a performance
drop of 0.726% on the lowres set.

Change-Id: I4fdd1e20fb6f671162cd32b3abe699cd2aee1919

Reset xd->mi and x->mbmi_ext for the superblock after the first
scanning pass.

Change-Id: Iae9142ff2b1a2b576f54dc545b58fe37c97cecac

Although this does not fully convert var-tx to using
av1_block_dist(), it does make it use the same distortion functions
av1_block_dist() uses: pixel_sse() and sum_squares_visible().

Change-Id: I1173bc6941a3b895381b9fcb73b533b5afc31aab

Change-Id: I39c014ec58c08e29f60c8e4ea186fc57ac15c56b

When --enable-coefficient-range-checking isn't specificed, clamp the
coefficient at each stage.

This doesn't change the decoder behaviour for existing AV1 streams.
However, some AV1 bitstreams that would have been rejected by the
decoder as illegal (range check failure) are now legal bitstreams.

There is no impact on video quality.

BUG=aomedia:30

Change-Id: Ifa01186bae6bfe5d7712298e33d964c20f88435e

Small change to calculate the encode size for scale checking using the
av1_calculate_scaled_size function used elsewhere instead of calculating
it in place. Done for constistency's sake.

Change-Id: I72626b729477e28e868cf9028ea4537267a12413

Adds a separate scale numerator for resize and superres scaling on
keyframes. They will only use this factor in their respective FIXED
modes.

Change-Id: I4ef9a5760a5423ec632d644e6c7fec674bbb46f4

The code to pre-scale reference frames was hardcoded to only work
for 4:2:0. This makes it work for 4:2:2, 4:4:0, and 4:4:4, also.

It also eliminates the special case for a fourth plane, based on the
assert above that the total number of planes is no more than three.

Change-Id: I79870d2d11bfc3b6e2e73c48a9ba679bffab186f

-0.242% gain on cam_lowres

Change-Id: Ib9ba2f7dfc7d10b8066bd3f70eeafa7faac8a607

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

Change-Id: I4092f9ca0f5497bffee31ec4a1e9804e90def42e

Change-Id: I2e783a16418708c6403de3c2e84450dbc83df3b7

Old inter_mode coding was obsoleted by REF_MV.

Change-Id: Ib812f626fe9f8e3342eee5d7b0214ed55701bec3

Adapt the intra_inter binary syntax element symbol-by-symbol
and remove updates from the compressed header.

Change-Id: I9abfd91d4521202f27854ce3e01b670ce15846e9

Perform symbol-by-symbol adaptation for the skip syntax
element and remove updates from the compressed header.

Change-Id: Ic42f60e19c56db52dd51b3784fd305c7e6b595c7

Simplify the number of different compile and code paths.

Change-Id: Id5b061571daeb070b91ec762fe7e07e8c114229e

Change-Id: I28e0d2c35c7b1eeb1d5f6eb5d4592ffa96032175