This commit merges the fix to enable high precision motion vector
always.

Related tracking issues:
https://bugs.chromium.org/p/webm/issues/detail?id=1036
Original libvpx commit:
1799f2f8

Change-Id: I39299a5cb6e18b83d9e88279c11e8cfc8a66cbc6

This commit merges the fix that changes the coding order between sign
and magnitude to be sign first, magnitude later.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1039
Original libvpx commit:
a3df343c

Change-Id: Ifde537a1deea9baecba39923256310ee3309829e

This commit merges the fix that extends the range of delta Q values
from 4 bits to 6 bits.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1051
Original libvpx commit:
612104bb

Change-Id: I9930863a6c96bf33c48d26486c9171b9ce2c6e12

Change-Id: I16469062853c101965f56002be30ebc5823975b1

Guillaume Martres authored Aug 23, 2016 and Guillaume Martres committed Sep 29, 2016

Now that `rd_variance_adjustment` has been removed, we can remove this
reencode without affecting anything.

Change-Id: Id2e055fe2f00bd5c1e59daa44fce4c264b730116

Guillaume Martres authored Aug 23, 2016 and Guillaume Martres committed Sep 29, 2016

This function is called after `super_block_yrd` and assumes that the dst
buffer is correct but that is no longer always the case after
daf841b4 since we don't call
`txfm_rd_in_plane` after the RDO loop in `choose_tx_size_from_rd`.
We could fix this by always saving and restoring the dst buffer but
removing `rd_variance_adjustment` is a better solution:
- Getting the dst buffer always right is tricky as demonstrated by the
  fact that it is wrong now, even if we fix it now we could break it later
  and not notice
- Perceptual weighting is a good idea but `rd_variance_adjustment` is the
  wrong approach as it weights both the rate and the distortion:
  to get meaningful units you should only weight the distortion,
  weighting rate means that we pretend some bits cost less than other
  bits, this is not the case. The distortion weighting approach is
  implemented by Daala in `od_compute_dist` and we plan to experiment
  with this in AV1 too.
- Removing `rd_variance_adjustment` improves coding efficiency on all
  metrics, here are the results for objective-1-fast using the Low
  Latency settings:

      PSNR Y:     -0.14%
     PSNRHVS:     -0.17%
        SSIM:     -0.12%
      MSSSIM:     -0.12%
   CIEDE2000:     -0.07%

Change-Id: I74b26b568ee65f56521646b8f30dd53bcd29fce3

Change-Id: I25dc61bab46895d425ce49f89fceb164bee36906

This commit merges the fix of making render size referencable in
coding.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1079
Original libvpx commit:
ce378025

Change-Id: I24f1d2f019ad41985905608e2847b06221c19338

This commit merges the fix of adding colorspace and profile related
bits in intra-only frames.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1087
Original libvpx commit:
2a388b53

Change-Id: I9c4fc4efcb5ebdecd6bb15e804dbcc7cc1dfbe58

This commit merges the fix of motion vector clamping correction.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1037
Original libvpx commit:
dea99899

Change-Id: If3bc4ddccd5d25d8cc40d273cf0ab14aeefbcfe3

This commit merges the misc-fix of removing a duplicate check on MV
values.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=662
Original libvpx commit:
43be86db

Change-Id: Ibb1db543c6641dfd74979b927651c53f62088159

This commit merges the fix of oddities in several intra prediction
modes.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1043
Original libvpx commit:
c7dc1d78

Change-Id: I4e2d0c2514a34b498453dcd4be2e6e4430d7373a

This commit merges the fix that separates "has_no_coeffs" from skip
flag.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1014
Original libvpx commit:
a5d930e4

Change-Id: Ieda635c97e08137c20c8a191262ec88f186d7b4e

This commit fixes two major bugs in parallel deblocking experiment, the
first one is missing initialization of lfm->lfl_uv array for horizontal
filtering. The second one is inconsistent order of vertical/horizontal
filtering of superblocks within a frame between encoder and decoder.

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=45#c2
BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=53#c1

Change-Id: I2df7eb313d49203fb70efe2bdf957b9d7e0bf678

Change-Id: I61f91855430e11da45d4e91ec6d3a8976c461cb7

* Move clipping tests from inside to outside loops
* Let sizex and sizey to clpf_block() be the clipped block size rather
  than both just bs
* Make fallback tests to C more accurate

Change-Id: Icdc57540ce21b41a95403fdcc37988a4ebf546c7

Change-Id: Ia69bad44e47509208e3b9d306165d0872d4e92f3

Change-Id: I7f691a0ae27f06ef3d727764829a60a8ffc509eb

This reverts commit e80b96e0.

Change-Id: I9c0b41092700ceb41515ad8dece4773a12a6dc33

This reverts commit 4df11c7f.

Change-Id: I328b884dff690a4c7909f4cb2ceeaf0134c37ac2

This reverts commit 7c00aff6.

Change-Id: I2426d68be1d9307f6e1eda66b0f150f43e435224

This commit merges the misc-fix of removing a duplicate check on MV
values.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=662
Original libvpx commit:
43be86db

Change-Id: I63c7df5edca41637124daab7547ff26c30a73238

This commit merges the fix of oddities in several intra prediction
modes.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1043
Original libvpx commit:
c7dc1d78

Change-Id: Idbf65e07280848459bfffdefac3c252eef2a1274

This commit merges the fix that separates "has_no_coeffs" from skip
flag.

Related tracking issue:
https://bugs.chromium.org/p/webm/issues/detail?id=1014
Original libvpx commit:
a5d930e4

Change-Id: I7ec19d672a594907d7301ae3a2abef1fab373e5c

PSNR YCbCr:     -0.01%     -0.06%     -0.17%
   PSNRHVS:      0.01%
      SSIM:      0.03%
    MSSSIM:      0.00%
 CIEDE2000:     -0.05%

Change-Id: I1205c021bfc5cee6f80344fec92aabb529af9bd1

Use correct function signature.

Change-Id: Idf6dc05eb0ada42e719765fb607c5b217efe672a

A tile group is a set of tiles in scan order.

Each tile group has a version of uncompressed and compressed headers,
identical apart from tile group parameters.
Encoding probability updates takes account of the number of
headers to control overheads.

The decoder supports arbitrary numbers of tile groups with
arbitrary number of tiles. The number of tiles in a TG is
signalled in the uncompressed header for that TG.

The encoder currently only supports a fixed number
of TGs (3, when error resilient mode is on) of equal size
(except possibly for the last one).

The average BDR performnce with 3 tile groups versus
anchor with error resilient mode and up to 16 tiles is:

NR YCbCr:      3.02%      3.04%      3.05%
PSNRHVS:      3.09%
SSIM:      3.06%
MSSSIM:      3.05%
CIEDE2000:      3.04%

Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b

Change-Id: I6d3e97385a9d1c82fd3b7cbc8fcc02b3f682e955

This is a port of
https://chromium.googlesource.com/webm/libvpx/+/92922be83c0b4b98d50f24cc3a1e7cc0a1b5741a
from nextgenv2

Change-Id: Ie62170f7305a1588a2d170e36297618a549f1787

Add tx_size_2d table to cb4x4 configs.

Change-Id: I2f68a21ff3fb008fe5a55712a753edd98899a98f

Change-Id: I720e3ab61300299a44295794bdf86490e33df12f

This is a debug tool used to detect bitstream error. On encoder side, it
pushes each bit and probability into a queue before the bit is written into
the Arithmetic coder. On decoder side, whenever a bit is read out from the
Arithmetic coder, it pops out the reference bit and probability from the
queue as well. If the two results do not match, this debug tool will report
an error.  This tool can be used to pin down the bitstream error precisely.
By combining gdb's backtrace method, we can detect which module causes the
bitstream error.

This tool is moved from following two CLs of nextgenv2
https://chromium-review.googlesource.com/#/c/366432/
https://chromium-review.googlesource.com/#/c/380300/

Change-Id: Iec6d4c2e3851b8ac1db35776fd7a216a9230a983

Change-Id: Ic529355880b4dbd076a7e46e7b03a49a1ee5f6f0

These two functions are almost the same.

Change-Id: Ic60615e2c6e01d78ef3555fea61cc6e056bd67d0

This is to facilitate SIMD quantizer implementation

Change-Id: I5e63ae5f347240ec58e88ecd8abef63ad7e5c984

This will allow for aligned cdfs and scan orders inside.

Change-Id: I799af6cc0b87d90bad56f32fd822e0690fc51b8b

Change-Id: Id6b0e27a91dc42ae3a0aad1d55716001fef9e91c

1) Turn off SIMD quantizer in adapt_scan experiment because the iscan is
not 16-byte aligned now.

2) Turn off eob-specific dqcoeff initialization in
inverse_transform_block_inter and inverse_transform_block_intra

3) Turn off transform optimization for special eob because it is not
compatible with adapt_scan experiment

Performance:
        PSNR    BDRate
lowres  1.2%    1.068%
midres  0.897%  0.769%
hdres   0.945%  0.724%

Change-Id: I197c19ba536761c334790a040ef44534c7cf21b5

Change-Id: I43b3ce9bdee07107cbb5bc4b1ab216b3f0c5295d

Change-Id: Ia11ccf105222dd7169e3692af33ead9183ab31e9