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This experiment has been abandonned.

Change-Id: Ieabc6f365651e2d116a4505a3cc202add94d1386

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

Change-Id: I02ed47186bbc32400ee9bfadda17659d859c0ef7

This name better reflects the functionality of the mode.

Change-Id: Idc2372e7c7b226f70f63fa4f272a88cb4d857089

This makes the ext-intra angles symmetric around 135.

Change-Id: I81d4134a69e2de3e740299d66dbb9c28c59b73a5
Previous: 45, 67, 90, 111, 135, 157, 180, 203
New:      45, 67, 90, 113, 135, 157, 180, 203

This addresses an inconsistency between the set used
to decode the tx_type in the bitstream and the set used
for the tx_type search. Previously, the set used to
read/write the tx_type was based on the smallest tx_size
in the vartx partitioning, but the search uses a set
based on the largest possible tx_size. This patch
changes the tx_type search to use the transform type
set associated with the tx_size 1 recursive level down from
the max square tx_size to make the search more consistent
with the bitstream syntax. If a tx_size is selected for an
invalid tx_type, DCT_DCT is used for that partition instead.

This patch also adds assertions to all exposed transform
functions to ensure that no illegal transform type/size
combinations occur.

This currently gets a 0.1% drop in performance on lowres.
The drop is due to the reduction of the tx_types available
for 32x16 and 16x32 transform sizes. Before this patch,
32x16 and 16x32 transforms were getting assigned a
set of 12 tx_types, some of which we did not intend to
support for these sizes.

Change-Id: I44aca4876b261c345623cd04ad6235bca4532701

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

This changes serves to illustrate that DC_PRED does not
need 32 bits. It only needs the specified pixel bit depth.
Which fits inside a signed 16 bit integer.

Change-Id: Ice062c8c4a794cb4f32a3963278f4a99ef326dda

This experiment has been abandonned.

Change-Id: Ifde0a76266af9f8c202c01805410b72d64594b0b

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

Change-Id: I54fee8a18afaec5333ae852eb6bd9ac0e2550db1

Disabling such cases will reduce search time without hurting
coding performance (-0.001%).

Change-Id: Iaa4385053fcf5bd59fb1f94d5583eb19cf792242

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

Change-Id: I2dce80e1e1b2116708b6ba9feeacaacc12af8fc4

Change-Id: I39cfbb135add0553cadf64481b13786831fbdddd

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

Change-Id: I9c9d6ef5317798cbf237307a9754fe7e03bdda47

Sub8x8 Validation code is changed to be more robust. The scope of the
validation is narrowed to validating that all of the required content in
the storage buffer was stored between CfL predictions. The early
termination used in the current mode decision code does not allow to
validate more than that.

This change does not change encoder output

BUG=aomedia:925

Change-Id: I7f1ed84da5037dcfaaf5da9cf33b4b8d664d2352

Change-Id: I0cc53a03f07a11a6f7ea0570ff4ee8cf7c18c5aa

For ext-intra direcation intra modes:

1. Use neighbor block modes to modify edge filtering strength
   Coding gain (lowres/midres/hdres):
     (8 keyframes)
     PSNR: -0.19 -0.22 -0.10
     SSIM: -0.29 -0.27 -0.13

2. Use context-based cdf to code angle_delta syntax
     (8 keyframes)
     PSNR: -0.20 -0.24 -0.27
     SSIM: -0.29 -0.33 -0.37

3. Filter corner sample:
     (8 keyframes)
     PSNR: -0.01 -0.02 -0.05
     SSIM: -0.03 -0.04 -0.05

Combined Bd-rate improvement for 8 keyframes
     PSNR: -0.40 -0.47 -0.40
     SSIM: -0.57 -0.60 -0.51

Change-Id: Id47ac17b6bf91cd810b70cacfc5b457341f417f3

Select the best compound_idx in rd.
The rate/cost for compound_idx and their ctx will be in patch 4.

But there's a bug for now if we don't encode one more time using the
selected compound_idx. It remains a issue to be solved in the future.

Change-Id: I5e1ba51da2b6ab5bacd8aba752dda43bd2257014

Change-Id: I567420e45f54cfe991065614d0a8c0c4d637e116

Change-Id: Ibfeb424bf0ebab7bbeb69f6f6df24a4f4924ec97

Reduce number of modes from 10 to 6, and disable fi modes in UV.
To reduce complexity, apply filter directly without subtracting
the estimated means.

Change-Id: Iaf78d92d31e4a7cc30ea7863b57a9611c5f503e6

This is more precise than the dist functions it replaces.

Results on Subset1 (compared with previous commit with CfL enabled)
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0634 | -0.9188 | -0.9429 |   0.0609 | 0.0722 |  0.0593 |    -0.3226

Change-Id: I955a7d7eceea50482edb40b0d1041b300e3c9042

Change-Id: I32c5015bedef07f58413c679b4aaf30651a357b9

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

Change-Id: Ie5049af9195d9c48b6928143ac04ac0a5058d0d8

This experiment has been adopted.

Change-Id: Ife4c18a59791268b7ac0de5a8a08e762a042cae2

Change-Id: I75ce79db34789151cc4cc9183a550f59e1357bfe

Change-Id: Id377c68e30031ad4697ca1ba311487b803a8af4c

Removes a bunch of unused code.

Change-Id: I86bda117d8d455452ee1ee3a2a566742650e05e0

Fixes an assert failure when 32x64 and 64x32 partitions are used
with tx64x64 when ext-partition is also on.

BUG=aomedia:935

Change-Id: I3bf50aeab58ec4ba2c9892e6eb18cf60e425fa42

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

Change-Id: I5bff0a68602a89ce480fec049c8b2c4bce44f6bb

This variable is unused.

Change-Id: I8ee9c588898417e956e7cd7993ff54cbb885285e

Change-Id: I9d3f0380865790d8adcb85f03305b193bc1949d7

This experiment uses switchable interpolation filter for intra
prediction. Current gain is too small to be useful for AV1.
May explore more for AV2 in the future.

Change-Id: I24ae8c75dc71adf6271eabdb68a81b68a0869fa2

Change-Id: Ic4e04ef959e10b60dae6de8d6da50e7a281e654c

Add av1_allow_palette() to control whether palette mode should be enabled.

Change-Id: Iee24636451be42eb36093dc3453bc39c7e686276

In this experiment, sharp image discontinuity in the predicted
block is detected. Based on this discontinuity, we choose
particular LGTs as row and column transforms.

Bitstream syntax, entropy coding, and RD search for LGT are added.
One binary symbol is used to signal whether LGT is used. This
experiment can work independently with the lgt experiment.

lowres: -0.414% for key frames, -0.151% overall
midres: -0.413% for key frames, -0.161% overall

Change-Id: Iaa2f2c2839c34ca4134fa55e77870dc3f1fa879f

Change-Id: I73e9d2d327b062828a75bc99fb348441dd32174a

This returns true if a block signals tx_size in the stream and uses it
in the bitstream writing code and the decoder.

Note that we can't quite use it in pack_inter_mode_mvs when
CONFIG_VAR_TX && !CONFIG_RECT_TX but I've switched the code to using
it the rest of the time since rect-tx is adopted and eventually the
other code path should be deleted.

Also use the helper function in tx_size_cost in rdopt.c, where the
test was wrong and caused underestimates of block
costs. (Specifically, the code that subtracts tx_size_cost from
this_rate_tokenonly in rd_pick_intra_sby_mode ended up subtracting
zero for a 4x8 block).

The behaviour of the decoder should be unchanged. The only change in
the encoder's behaviour should be in tx_size_cost where it should now
match the rest of the code.

Change-Id: I97236c9ce444993afe01ac5c6f4a0bb9e5049217

Change-Id: I5446327378938128f27186015619a079c2845d53