This is still a rather inefficient black+white encoder, since it carefully
computes some chroma data, but just doesn't write it. However, at least the
bitstream is now monochrome.

Change-Id: Ie8a89bf329e7b41441032fb0d9e9011385bc12ff

This reverts commit 060e192b.

Change-Id: I5700d351a3cbb682ec49a0efb9cca4d0e83f9a3a

This experiment has been abandonned for AV1.

Change-Id: I07be0876b21ee20a1eb2490bb98e4f84978ff001

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I17bd46ebad7796d04fb4065fb36da0e1c4eeaf9b

Change-Id: I4c5d962bcac389d86eadb4bccc838a017bda4062

This bit appears in the sequence header. At the moment, it does
nothing, but it will mean that we don't encode (or read) chroma
planes.

This patch adds the flag to the sequence header, and also adds an
encoder option (--monochrome) which enables it. At the moment, this
doesn't do anything except cause the bit to be set correctly in the
header.

Change-Id: If5598412c1c75101553d7f8f9098f9ed1163514e

Replace 'fallthrough intended' comments with a dedicated macro
that the compiler can see (or remove those comments when they don't
provide value).

Change-Id: Ib6361e15ff078378921c9e2b654bff63cf497f5f

This commit adds code to support separate regular quantization for U
and V. They currently always use same quantization parameter, hence
this commit does not change bitstream at all.

Change-Id: Ifaf43e4fd0bcd01b1483f2dacf3ac498003d5db1

One_sided_compound is less likely to provide gains for jnt_comp.
Stop jnt_comp search when one_sided_compound is true. It saves coding
time as well as bit overhead.

Change-Id: I6714e5d211eba14a5793bdae7215ccfcc1d8f67a

Change-Id: If8a4f3d256e619c9efdb66b1d8b8da5b8fc980ab

This experiment implements low-cost delta q signalling on a per-block basis
for all non-inter frame types, which would allow for more efficient AQ
which bases its decisions on temporal information.

Based on an Intel proposal from March.

Change-Id: I18e73d8b12f4caa0b165df12c58ab506271bec03

Generalize quantizer setup so that quantization and TX can use
different coefficient shifts/scalings without inpacting RDO lambda
generation.

This patch is documentaiton + a minor refactor setting up later
work; it causes no functional change.

monty-daalaTX-fulltest-Daalabaseline-o1f@2017-11-07T00:01:20.779Z ->
 monty-daalaTX-fulltest-DaalaRDO-o1f@2017-11-07T00:02:31.347Z

PSNR | PSNR Cb | PSNR Cr | PSNR HVS | SSIM | MS SSIM | CIEDE 2000
 N/A |  0.0000 |  0.0000 |      N/A |  N/A |     N/A |        N/A
(note-- the numbers above were collected using --cpu-used=3, which
 appears to be newly broken.)

monty-daalaTX-fulltest-Daalabaseline-o1f4@2017-11-07T05:59:16.553Z ->
 monty-daalaTX-fulltest-DaalaRDO-o1f4@2017-11-07T05:59:50.180Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

monty-daalaTX-fulltest-Daalabaseline-s1@2017-11-07T00:01:46.582Z ->
 monty-daalaTX-fulltest-DaalaRDO-s1@2017-11-07T00:02:56.282Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

Change-Id: Ia5a3c052eacd17184ca1b0fe6d032cfb9afdb77f

This reverts commit ab8bb8b8.

The reverted breaks many nightly run tests, reverting this temporarily
to allow nightly tests to detect other failures. Once the issues are
fixed, we can reenable the change in the reverted commit.

BUG=aomedia:1012
BUG=aomedia:1013
BUG=aomedia:1014

Change-Id: I2503fe78e47c7a08bb6cfdfff2c295cec0b6497d

While large_scale_tile=1, not use temporal MVs.

Change-Id: I7107519595b79cbca45dfe72d5ada78cfdc39b00

max_tile was provisionally adopted at the working group meeting 2017-Oct-10

This patch also enables support for 64x64 and 128x128 superblock size for max tile
(rather than assuming 128). There is also one fix for max_tile in combination of
loop restoration where the width/height was in the wrong units for max-tile specific code.

Change-Id: Icb862a2738fea5fc6215819396e1afa4eb86e461

Development of this experiment will be deferred to AV2.

Change-Id: I3c4615a21b59508500bed8aab0a5c54413b4f284

The control of using reference frame motion vector is a separate
factor from the existence of previous frame motion vectors. This
commit decouples these two, such that the encoder can control the
use of reference motion vector. When it is used, one can further
identify if the previous frame exists or not, then to decide if
need to force use_prev_frame_mvs to be zero.

This solves the issue where the previous frame mvs is set to be
0 and it accidentally shuts off the access to all other existing
referece frames mvs in the mfmv system. It brings back the coding
performance gains to normal.

Change-Id: I2531f73e55582a9bb5b3e0ff47e361a199ec8082

Change-Id: I75890c0f64f93f48299895d1e0bcfbf91846a4ab

This experiment has been abandonned.

Change-Id: Ieabc6f365651e2d116a4505a3cc202add94d1386

Before this patch, striped loop restoration didn't restart correctly
on each tile row. Now, the loop restoration stripes start at the top
of a tile row in the same way as if it were the top of the entire
frame.

Change-Id: I0a88a28d7804b2f09d792ecbbf4f22f666f67012

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I02ed47186bbc32400ee9bfadda17659d859c0ef7

Change-Id: Icbedc16b01adf9b48f0f357ec89143462865d54e

At the frame header level, add the checking on whether an inter-coded
frame allows the use of 'skip_mode'. At the block level, add the
decoding of 'skip_mode' for all the blocks if 'skip_mode' is allowed
for the current frame. If 'skip_mode' is set, no further bit needs to
read out, and the block is set as:
- Inter-coded in compound mode;
- With the nearest forward and backward reference frames;
- In NEAREST_NEARESTMV mode;
- In SIMPLE_TRANSLATION motion mode;
- In COMPOUND_AVERAGE compound type; and
- Skip set for residual.

Change-Id: I50297f63a81135109332c4a51b516bffd7726777

Change-Id: I5b7bb9983e1c613321704a579d459925bd6b9b2b

Reduce the context model size required to code the base level
syntax values from 42 to 32 per transform size.

Change-Id: I08485fdb563bc5c3323b0e147d69b47c286b9bb5

Change-Id: I39cfbb135add0553cadf64481b13786831fbdddd

The frame marker system supports one to map the reference frame
index into the natural order. It allows direct checking on the
efficacy of the reference frames given their relative locations
with respect to the current coding frame.

This commit uses such property to filter out reference frames
less likely to contribute coding gains from the rate-distortion
optimization process. For example, it takes out the check on
last2 / 3 frames, when their actual location is further away
from the golden frame.

The AWCY results show 0.6% performance regression. The encoding
speed gets doubled.

To use the speed up, one needs to turn on frame-marker experiment
before we turn it on by default, and enable selective_ref_frame
entry in the speed feature.

Change-Id: Ifb03ed90acd980bbc7ff1c2e17982e21e68d2588

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: I9c9d6ef5317798cbf237307a9754fe7e03bdda47

Change-Id: Ibfeb424bf0ebab7bbeb69f6f6df24a4f4924ec97

Drop it from 4 to 3 to reflect the actual use case.

Change-Id: Ifdadaf053153c21b4b4fef40a3298a557fd2ef92

Modified the copying code and the profiling showed better performance
than previous implementation.

Change-Id: I41f585e0b0eac7a0deb4dec197c178e412a48db9

Change-Id: I32c5015bedef07f58413c679b4aaf30651a357b9

Inter/intra matrices are the same. Reduce the dimensions
of the various matrices.

Change-Id: Ie5049af9195d9c48b6928143ac04ac0a5058d0d8

restrict_compressed_hdr experiment is made redundant by
new_multisymbol.

BUG=aomedia:870

Change-Id: I86100d114ca641a453c32ffd09cabb736809abd1

This experiment has been adopted.

Change-Id: Ife4c18a59791268b7ac0de5a8a08e762a042cae2

Supports 4x16 and 16x4 partitions as well as adds a fix
for 422 and 440 chroma subsampling.

Change-Id: Ibeb2218c8cb1c648c3b2f6bce10281ccbcacf20f

Change-Id: Id377c68e30031ad4697ca1ba311487b803a8af4c

Disable corresponding 2x8 and 8x2 chroma inter predicitons for
chroma temporarily.

Change-Id: I7caf8da303d9231534e960fde1a5639cf9820635

Change-Id: I43c3f337e2a648ec4ee17ceab0a8f6892924d3b2

Since CB4X4 is adopted and without it the codec does not work,
it is better to remove it and simplify the code.

Change-Id: I51019312846928069727967e3b2bbb60f0fba80d