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

Change-Id: I41f585e0b0eac7a0deb4dec197c178e412a48db9

This experiment has been adopted.

Change-Id: Ife4c18a59791268b7ac0de5a8a08e762a042cae2

Removes a bunch of unused code.

Change-Id: I86bda117d8d455452ee1ee3a2a566742650e05e0

Fallback to default warp params instead.
The extra assignment to DEFAULT_WMTYPE prevents an assertion.

Change-Id: If21a46cbb4cc9761e5c94bd2fcbc3a06342d677d

Change-Id: I91efb93cade65469a2c4e922253b599270b45406

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

Support recursive tx block partition.

On the screen content testset, 0.2% gain for keyframe encoding.

Change-Id: I623e6fbb910fef9c91617e02edf420019f67d189

Change-Id: I9d3f0380865790d8adcb85f03305b193bc1949d7

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

Change-Id: I4705652ac8231ee25f960e8096dc97c2aeed1d20

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

Align all the motion vector storage buffer in 8x8 block resolution.

Change-Id: Iea786db95b2274332a755dc60f66510c068e3dc5

Change-Id: If42a8cf9de9b4be14b4f228c5bf39747eefc168d

While finding the reference MV for a block, if one neighbouring block's
motion mode is warped motion mode, instead of directly adding that
block's MV to the candidate MV list, we use that neighbouring block's
warped motion parameters to compute a MV for the center point of the
current block, and then add that MV to the candidate MV list.

Borg test result:
             avg_psnr ovr_psnr ssim
cam_lowres:  -0.507   -0.514  -0.685
lowres:      -0.114   -0.122  -0.180

The change is added under ext_warped_motion config flag.

Change-Id: I3ce6290a1fd512b613eab5d7620c8bcb08f189a6

Make fi mode index entropy coded instead of using raw bits. Mode
cost estimation in key-frame RDO is updated as well. Modification
to inter frame RDO is not included in this patch.
Also key-frame y mode cdf table is re-trained since fi modes are
attached to DC_PRED

Key frame BDRate:
-0.399% lowres, -0.339% midres

Change-Id: I9ccf478b0a2e48fb1870fe8451e45e2c858a5f63

This patch modifies the interpretation of SEG_LVL_SKIP and
SEG_LVL_ZEROMV slightly, to fix a decoder crash and to save bits
in the intended use cases of these segment flags.

Previously, blocks using either of these segment flags could
signal reference frames just like any other block. But the mode
was implicitly taken to be ZEROMV. This worked fine in VP9, but
crashed for compound blocks in AV1 since those should use
ZERO_ZEROMV instead.

Now we make it so that SEG_LVL_SKIP and SEG_LVL_ZEROMV imply
that the block is single-reference. The reference to use is taken
from the SEG_LVL_REF_FRAME segment feature if that is present,
or is set to LAST_FRAME if not. See the attached bug report
for the reasoning behind this.

As a related change, we also teach the encoder how to deal with
the combination of SEG_LVL_SKIP + SEG_LVL_REF_FRAME.

BUG=aomedia:675

Change-Id: I5e657cbfc1f08395a0301cba701edfb1682502a5

Removed rounding of blk_row/blk_col, which is more clear and doesn't
change the result since the step size(mi_step) are even number.

Change-Id: I3b0de69316e10c4834eb2d0d7e160a0ec9fbf130

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

Most of the fixes are related to replacing BLOCK_64X64 with
cm->sb_size.

Fixes the AV1/AqSegmentTest.TestNoMisMatchExtDeltaQ/* tests that
were breaking before with ex-partition.

Change-Id: I19d6045b422a93891b8cf4f8a929def97a595058

Change-Id: Ibea4c2c732b16851ad16b475ea40f021d5b5d5b3

0.15% improvement on lowres set

Change-Id: If16a8e07797c64508f9e2d9b26ae874ac53c57a4

Introduced by: https://aomedia-review.googlesource.com/c/aom/+/25181

Change-Id: I1f25178d6b273fbeade4c33f153b5f2bac4a8b99

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

Frame sign bias value will not be signaled in frame header. Instead,
the sign bias of reference frames are derived from their corresponding
frame offsets at both encoder and decoder.

The tool of 'frame_sign_bias' is dependent of 'frame_marker'. Compared
against baseline, the enabling of both tools obtains a small coding gain
of -0.08 ~ -0.11% in BDRate over Google lowres/midres tests.

Change-Id: I8d85dc427ced0b2152712ccf61be4be6068075b9

Add an experiment "tmp", which includes:
1. Always use larger block size while storing frame MVs and make
it consistent for CB4X4 or non-CB4X4 cases. Namely, use 8x8 for
4x4 mi size and 16x16 for 8x8 mi size.
2. Allocate smaller buffer for frame MVs and save memory usage.
3. Use nearby 8x8 or 16x16 location's previous frame MVs, and make
the logic simple.
4. Reduce the number of copying for frame MVs, that is very costly
in decoder.

Baseline decoder got 5+% speedup. Borg test on lowres set showed a
+0.009% PSNR difference before/after the patch.

Change-Id: I61e14e95fd35bea88f338931b4f43c44f4e4cf1f

Change-Id: Ibdcb1530b9f81a2a5222e95cf5c0b7b2938509a8

Change-Id: I3f30c35bcd1bc623ad0c34c4b954ff71b2fcfd00

Change-Id: I22f4ea3b8348816d4592645e9994b4b0ff29868c

Change-Id: I0b6f56d2bf0482cfbf45525828d6daa6aea187e5

Replace sorting with merging on decoder side.

Change-Id: I77d63c1b2b0569a2e0d0fc239f77d7a90b1275df

Change-Id: If6e84f390c6f92e8e013056c657758ba9e407a71

BUG=aomedia:829

Change-Id: I78347e12b4efa05ebd424ba25de7767437495b42

Before this patch, if CONFIG_DUAL_FILTER was true then an MB_MODE_INFO
stored its filter choices as an array of four numbers, each of which
was between 0 and 10. It also seems that elements 2 and 3 of the array
were always the same as elements 0 and 1 when used.

This patch defines a new type(def) called InterpFilters together with
constructor and extractor functions. When CONFIG_DUAL_FILTER is zero,
InterpFilters is a synonym for InterpFilter and the constructor and
extractor functions should compile away to nothing. When it is
nonzero, InterpFilters is a uint32_t which stores the x filter in the
high part and the y filter in the low part (this looks strange, but
matches the old numbering).

Making this change allows us to get rid of lots of special case code
that was dependent on CONFIG_DUAL_FILTER. The uniform
extract/make/broadcast interface also actually shortens code in
general.

Change-Id: I6b24a61bac3e4b220d8d46d0b27cfe865dcfba81

When experiment LOOPFILTER_LEVEL is on, there're four base filter levels
for each frame. This patch enables one to use one delta or four deltas
to update corresponding filter levels for each superblock in
EXT_DELTA_Q.

1 bit per frame is sent through bitstream to select one or four deltas.
Now, we hard code to use one delta.

Change-Id: I9c61a035064fa81878b0575ad21664e2b22a6a45

The _ind and _inv mapping tables are not necessary. The CDF tables are
updated with new values converted from the old tables. Performance
impact is small and neutral.

Change-Id: I65845ab3c80f88794abd9ab9e61494af56099c7c

Before LOOPFILTER_LEVEL, there's one filter level,
now we have four filter levels for y plane vertical,
y plane horizontal, u plane and v plane.

This patch enables experiment LOOPFILTER_LEVEL to support per
superblock loop filter level update.

Change-Id: Ib11a1564471eb3076c26e73e5cdf7b5a3045ef97

Reduce the number of contexts from 10 to 6.

BUG=aomedia:830

Change-Id: If0ec302816975293b7dbd164c867feb66fa76847

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

Change-Id: Ic077963f72e8cc2ae9872b58c8a0241988384110

on windows build

Change-Id: I841eb96b26155dd8fcba008884437035abc7e806

Change-Id: I52f204000f5fdaf1c6fff63949d72e858ceea462