Change-Id: I17fd041e9e1cead6b2b6339f0efa55c1ee9938af

This adds part of the proposal in "AV1 Tile Overview v1_1".
A new dependent_horztilegroups configure option is added
(disabled by default).

The experiment adds syntax dependencies between tile groups.

Change-Id: I6721875d622807f92f578ab1d2a5d32bff6f472f

"+ 1" has been added in a few locations to match the indices for the
context for the CDFs and the motion vectors.

Suggested fix (of removing +1s entirely) can then be implemented
without further affecting the overall behaviour of the encoder and
decoder.

BUG=aomedia:858

Change-Id: I650a618d3fda1d27bd3550d25ad1ac52e4365061

Change-Id: I0ca217b0e94b8b65fb481cda6fe361212280637b

This enables CDEF for chroma when the horizontal and vertical
subsampling differs.  Since the direction search is only performed in
luma, the following corrections to the direction index are done for
chroma to correct the distortion resulting from the subsampling:

4:2:2:   4:4:0:
0 -> 7   0 -> 1
1 -> 0   1 -> 2
2 -> 2   2 -> 2
3 -> 4   3 -> 2
4 -> 5   4 -> 3
5 -> 6   5 -> 4
6 -> 6   6 -> 6
7 -> 6   7 -> 0

This improves the chroma PSNR BDR by about 2% for 4:2:2 content at
cpu-used=4, low delay configuration.  4:2:0 and 4:4:4 content is
unchanged.

Change-Id: Iee92d3697bc5a6fc9b1f340a63243a334935b433

This experiment has been abandonned for AV1.

Change-Id: Ic706b3533ecf502ab316505ba0a9a8eeeb296612

For ext-skip, the use of distance-weighted prediction has only shown
a coding gain in the AMCY low delay scenario. It is hence not being
considered and compound-average is used exlusively.

Change-Id: I57439eda1246e179d6404bbec366c6c610af3a36

When CONFIG_TX64X64 is ON, bwl could be 5 when real width is 64.
Read width from tx_size_wide[] instead from 1 << bwl.

Change-Id: If0a97a73f1dc90c3e9425ba20f7609f93eb705b9

Enables rect-tx-ext and rect-tx-ext-intra flags by default.

Change-Id: Ibeb08250754b092c89c710d3cb6d149d6bb42602

There were two assignments to 'recode' earlier, out of which the 2nd one
was a no-op.

Change-Id: Ia181c736177ad9886c2d0dc4a2002d5bc2fb7742

Change-Id: I4fd5a5c0470f8fc55f590e5e2eb6b745bce1fe73

based on the latest discussion in the HW working group about how loop
filter should be integrated with tiles, the following decisions have been
made:
1. two seperated flages should be added for
loop_filter_across_tiles_enabled for horizontal tile boundary and
vertical tile boundary.
2. encoder and decoder should only check these two flags to determine
whether loop filtering (including deblocking, CDEF and loop restoration)
should cross tile boundaries (vertical and/or horizontal) or not
regardless the horitontal depepdent tile flag.

This change list implemented the support for two seperated
loop_filter_across_tiles_enabled flags for vertical and horizontal tile
boundaries. The new experiment is disabled as default before it is
adopted.

Change-Id: I814377947517f5419c08b004a3b71b950d01eadd

Change-Id: I4f337df8f560f08953b9326525de9143033ad895

Change-Id: I92f73b78dfd0e25a61897e8b6e9e28ff210376d5

1. Use separate contexts for transforms of size 32x32 and above.
2. Initialize cdf directly

Change-Id: I3373143788e81b2547d99e420e591892ef2641a2

When the optimized non-zero tail is longer that 2, the likelihood
that forcing to drop all the tail coefficients would give better
rate-distortion optimization is much lower. This commit makes the
encoder to check such conditions and speed up the lv-map/multi
encoding speed.

Local test clips at high target bit-rate / quality show 20% overall
encoding speed up. The coding performance change for lowres is
0.014%.

Change-Id: Ifcf1d18e453a83110ca8be794aee26f3e0237605

This experiment has been abandonned for AV1.

Change-Id: Ib3bb07d62f2025ce50dc9bc1b3f9fc22488519a7

This allows nightly tests to detect other failure. This experiment
will be re-enabled by default once we fix the issue#1143.

BUG=aomedia:1143

Change-Id: I5891039c0666f8a92aa128f3540751d5804a2d9a

Change-Id: I499fe2be873944e73334f681a0e8138cfccbea29

This makes motion by function easier in some editors (such as Emacs or
vi), which get a bit confused by

  #if 1
  foo {
  #else
  foo {
  #endif
    bar;
  }

Change-Id: Ie9d8c34d3b9fafdac634db5f3647f3cc1611ebee

This makes code motion a bit easier in editors. To do so, remove some
copy-paste code in scale_references and rewrite a duplicated loop in
set_high_precision_mv.

This patch should have no effect on behaviour.

Change-Id: Ia9e72f2c89a7f7f7a1d3cb77822ff8db8b5faaf1

Code for the following options is removed.
(1) Disable filter_intra in sub8x8 tx blocks
(2) Filter intra implementaion based on 1x1, 2x2, and 4x4 unit

Change-Id: Ie898f6e8155709beff030b0ffb876754f14fb173

By default, the DC_PRED is not cached (this includes
decoding). During cfl_rd_pick_alpha(), DC_PRED caching
is enabled, the DC_PRED is cached after the first time it
is computed (for each plane) and then it is reused when
testing all the other scaling parameters.

Change-Id: Ie8ba0bb0427c4d9be8de5b44e6330e8a78b9c7d9

To avoid using a UV_PREDICTION_MODE with intra_mode_to_tx_type_context,
a wrapper function is added. Using a UV_PREDICTION_MODE with
intra_mode_to_tx_type_context is problematic with UV_CFL_PRED which
needs to be converted to DC_PRED.

Change-Id: I68320e34dd5e616d0f15ca2c1c951440243968cf

Exit the CMake script using message(FATAL_ERROR) to ensure test
failures return a failure code to the controlling shell.

BUG=aomedia:915

Change-Id: Idf7fb9736c617fa7dea7364b27d6a5b208634e7c

When superres experiment is compiled, but the frame is not
super-resolved, we should use the same code used by full resolution
frames.

Change-Id: I79b1d8410f66febdb51b78013375d61a8e52c8c5

Incompatibilities with other experiments has been fixed.

BUG=aomedia:1058

Change-Id: Id8358404c8f452bccf05ce3c1d91a633b215f07d

Remove BLOCK_2X2, BLOCK_2X4, BLOCK_4X2, which has been removed
from codebase.

Change-Id: I1c4ac7d148b7e95b1b104df7b9664cbb31928ddc

Change-Id: Ia869042ec3cc85de077a577814f742578e9ed6af

Clean up unused code. Now lpf_sb works as baseline loop filter. It
is compatible with seg feature and ext_delta_q.

Change-Id: If5deb10d9f35cc3037463e7e8420bcd6b2b0255e

Add high bit-depth macro definitions:
highbd_jnt_sad
highbd_8(10/12)_jnt_sub_pixel_avg.

Add SIMD functions:
aom_highbd_jnt_comp_avg_pred_sse2
aom_highbd_jnt_comp_avg_upsampled_pred_sse2

This patch also solves the seg fault caused by low bit-depth and
high bit-depth paths

BUG=aomedia:967
BUG=aomedia:944

Change-Id: Iea69f114e81ca226a30d84a540ad846f1b94b8d6

Add av1/common/x86/highbd_convolve_2d_sse4.c.
Specifically, function av1_highbd_jnt_convolve_2d

Change-Id: I1bfe0431c793bd5f78c30bc763aa7691e5d74b04

av1_mode_context_analyzer is always called with block == -1.

Change-Id: Ibc9e7e87ea95f3651f7505b82674a6fd795ae985

BUG=aomedia:1144

Change-Id: Ia8fb6df1a72bd1ff86c7955b681ec0d99c7a99eb

The dist-8x8 has asserts which check whether the sum of distortions of
sub8x8 partitions exactly match to the distortion directly measured on 8x8 pixels.
Currently, these asserts fail if CFL is turned on and the reason is unknown.
Until it is fixed, disable those asserts.

Change-Id: I27ea52f8f6f651360cd1adc740d3964cf4bf9869

Deletng the code since it is in fact for the PVQ, not for dist-8x8.

The relavant code removal for PVQ is commit:
d0b77ac7
"Remove PVQ code" on 2017-10-20, which has removed the PVQ code.

Change-Id: I6b58d0acedb6bf278f35ac6c76a7a0a481cd3edb

Some refactoring done to enable reuse of code.

Change-Id: I28cea413a1bf7e6b8ce82ee50c5b5603e8185a2a

Change-Id: I679eea672e183a34cdbfeef6eb4f3bd5b549b85d

Change-Id: I6db5563ec4f4992a899090cf15c3f5f5125a0764

All compound predicted frames now have the choice to either turn on
or off the use of the skip mode. The current encoder design only
turns on the use of skip mode when the temporal distances of the two
reference frames to the current frame are only different by 1.

This patch also includes a fix on the calculating of the temporal
distance between the two reference frames to the current frame for
skip mode.

Performance wise, this patch does not have noticeable impact as the
encoder stays with the same choice with the frame-level skip mode
flag.

Change-Id: I34f370940b3b25d2ab429b8721344133ae6288ad