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Resolve compiler warnings when the two experiments are turned on.

Change-Id: I568ddd74afad6fe720e1f46d0119df08fd2f689b

Offsets for the least-squares for affine motion computation
are now set at the top left corner of the current block.

Improves stability and performance a little.

Change-Id: I68ca7e74c6102502daa8ca3373af2b2dd59400c3

Disable the support of compound prediction modes for sub8x8 codking
blocks. Make the rate-distortion optimizations process account for
such constraints.

With the use 2x2 chroma prediction block, this makes the wrost case
number of inter predictors same as vp9. It affects the coding
gains by 0.35% for lowres, 0.17% for midres, and 0.08% for hdres.

The encoding speed is up by 10%.

Change-Id: Ieb2a83030676911baa403e586f1f800cbf485d81

Change-Id: Idf8f03052a7e21b8a273986204038545573d7962

Also supports homography models for future experiments.

Change-Id: I4510540f54133e063891ed491c95c087222f7810

The line of code is already within the scope
of an #if CONFIG_EC_MULTISYMBOL.

Change-Id: I62e28c8586f5d04a1e1be4ea5a2551d3123fde9f

Integerizes computation of the least squares for warped motion.
The model is restricted to only Affine. Affine seems easiest
to compute and integerize since it can be split into two 3-dim
least squares problems, as opposed to rotation-zoom which needs
a 4-dim least-squares problem to be solved.
The current implementation requires only one division per block.

BDRATE impact is mminimal. The upgrade to the affine model improves
coding efficiency but integerization also degrades efficiency a
little. Overall there is a net gain of about -0.07% BDRATE on
the lowres set.
BDRATE lowres: -1.113% with ----enable-warped-motion vs. without
(up from -1.044%).

Change-Id: I6b9216ac0737d76f59054293eabee48e17739ec4

Change-Id: Ifcdd3ce2953c1ecb1d0962da412a4b5ba2cda912

--enable-lowbitdepth defines the flag CONFIG_LOWBITDEPTH, not
CONFIG_AOM_LOWBITDEPTH.

Change-Id: Ifa1c12847bee4978d08d010f4fc3601d75e59c31

PSNR YCbCr:  -0.17%     -0.03%     -0.40%
APSNR YCbCr: -0.17%     -0.02%     -0.39%
PSNRHVS:     -0.06%
SSIM:        -0.17%
MSSSIM:      -0.07%
CIEDE2000:   -0.12%

Change-Id: I69a4b6a4e18c22c3930069396540a6fee45cb30d

Change-Id: Idd4a7ff49c594e8d1c7cb057967fe7bf75770dfb

Since we now require C99, this is undefined behavior.
Thanks to Luc Trudeau for the report and Alex Converse for the
suggestion on how to make the macro safe for all integer sizes.

Change-Id: I99a1342dfedb3e17a6869269be317c2ed26bfe9b

Change-Id: I222b5ce9ee1a1c1aac5620b94835967dd9a014c1

Not clearing the FP state was causing acos to return NaN on OSX / LLVM.
This was not causing problems Linux or AWCY.

Change-Id: I278d02839e4de858b5f55cfb380fa3968937995e

When creating the CDF head, do not use 8-bit probabilities
to make the CDF tables, but load them directly.

CDF tail values are created from the ONE_TOKEN relative
probability as before.

No change to BDR.

Change-Id: I7386b8952f6f69cc9b77aa1b2bee71cf8e3cc9ff

* code the palette color index using 45 wavefront
* interleave the coeff and palette color index in
  transform block level
* the above change does not change code efficiency

Details: 
The 45 wavefront scan allows to compute the ctx of
the diagonal samples' indices  at the same time. 
Interleaving palette indices and palette residual
on a transform block basis means that the entropy
 decoding and further processing of the palette 
residual is not delayed by the entropy decoding 
of all the color indices of the palette encoded 
block.
Change-Id: Ie9f576002a9a68394b99c23b01e9730df06df070

This allows compiling a codec using the same operating path (the generic
"high-bitdepth" one), regardless of the profile of the input bitstream.
For now, keep the 16-bit (generic) pixel operating path disabled by default.

Change-Id: Idd31a842b801a82c4918b1cfa7cc0bff5b11d060

This will make it easier to add native CDFs for all the
dependent experiments without excessive macros.

Change-Id: Iee4710f0fe1c1b4300f686cdf2c5b879a36de987

Adds the static inline function get_plane_type to convert a plane number
to the corresponding PLANE_TYPE.

There's no change to the bitstream, it only encapsulates the logic to
get the PLANE_TYPE.

Change-Id: I1199db3a32c89437d9c029ab5b2b2e62582a13a2

Support the use of 2x2 prediction and transform block size for
chroma components. This experiment builds on top of cb4x4. It
brings back the loss in performance gains due to 4x4 chroma
component constrain. The coding gains for lowres are up from 1.5%
to 2.5%.

Change-Id: I8e461e230c2d920f6df1af9d935ebe9dfa3820d9

Since gm_get_motion_vector is trying to give a motion vector for
"the frame as a whole", it makes more sense for it to calculate
the motion of the *center* of the block rather than the top-left
corner of the frame.

In theory, this change should also help the encoder make better
decisions on when to use global motion. It avoids an issue
where, early in the frame, NEARESTMV looks like a good way to use
the global motion vector *without* paying the rate cost applied
to the first few global motion blocks in each frame. This seems
to lead to a better overall result.

Change-Id: Ia5c6259ceb8b4ff3d00a5d553e1d18bdb802da59

Fixes that pack_palette_tokens() was disabled when pvq is enabled and
av1_decode_palette_tokens() was not complied.

Change-Id: I468bdc4d77ae7ddbca7fb5ed8e1da5506486a58c

Change-Id: If5d4f6d261276d9cfdd59fd7779467d92f56c395

Fix the build error when pvq and pallete experiments are both enabled.

Change-Id: I80839b0660456b81aad00ad8dd9c34b7541f7727

Skip coding the intra mode for chroma component for sub8x8 blocks
that are not in the reference position.

Change-Id: Ic3daab2668ab41c3b743664faf195e34124ead33

Process sub8x8 chroma component decoding in the unit of 4x4 block.

Change-Id: I02e149f6076cdb5942b8a0a0b9ac2d833b1a7e49

Previously the transform type sets used for 16x32/32x16 transform
sizes corresponded to 16x16 transforms. Now they correspond to
32x32 transforms with a reduced available set.

BDRATE impact:
0.05% worse for lowres, 0.13% worse for midres

Change-Id: I01d405d497c13837f5404f9e0caf8c571f3b26cf

Here we create a default set for the ext-tx experiment which
includes:

Intra: {DCT, ADST} X {DCT, ADST} + IDTX (identity in both directions)
Inter: DCT_DCT + IDTX

This set is used if indicated in the uncompressed header.

Change-Id: Ic907ada12b4e0c98cabb7c9650ab99942d0c0859

The result is identical to enabling both deringing and CLPF

Change-Id: I71db5ba9e21fcaf11ad87e94841eaf80be58c0a8

When run with --enable-ec_adapt, forward updates to the tx_size_prob
 array will not be made.

objective-1-fast:

master-ec_adapt-e568e6f0@2017-02-17T15:30:27.109Z ->
 tx_size-ec_adapt@2017-02-17T15:31:49.504Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0113 | -0.0112 | -0.0113 |  -0.0114 | -0.0114 | -0.0114 |    -0.0112

master-ec_adapt-robust-e568e6f0@2017-02-17T20:29:45.315Z ->
 tx_size-ec_adapt-robust@2017-02-17T20:33:06.405Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0244 | -0.0243 | -0.0243 |  -0.0245 | -0.0245 | -0.0245 |    -0.0243

Change-Id: I5873c5d14e3f3868997775f85fa743d2d55d81b7

Replace obselete size "4" with correct one "tile_size_bytes". This
fixes a decoder crash.

BUG=aomedia:352

Change-Id: I5b1c606a4d5be946acc68b3cfe0d0603a5591c44

Adds functinoality for least-squares, RANSAC as well as encoding and
decoding with new constrained homographies that warp blocks to horizontal
and/or vertical trapezoids. This is for future experimentation. None
of the models are actually enabled in the code.

Change-Id: I1936018c6b11587d6fd83c3a2c63548cb641b33f

This commit produces a bit-exact bitstream because prior calls to code
 the tx_size using aom_write_tree() would automatically convert the
 aom_tree_index on the fly to a CDF.
The tx_size_cdf[]'s are now computed once per frame.
Based on recent tests, this patch reduces decode time by 4%.

Change-Id: I920dbf036b8a9574ea6e65ae5f9c43eef1c3f864

Symbol count is maintained in the position after the
last CDF value.

Change-Id: I1882e48bfb1404ea7b83ef410298484939601796

Change-Id: Ib1b5dde5d4c6479c968cd7d7a4a1d01abae1fcf6

Allows DomainTxfm filters to be turned off for experimentation.
Also expands the parameter set for the Self guided filters.

Change-Id: I68fdb8e079a2464d80b3a4a990005c49baaaf0b8

Fixes a mismatch introdcuded with ext-inter + motion-var in
https://aomedia.googlesource.com/aom/+/42d9610a797dbc778797c04445578eba514d4099

Change-Id: I9d357b6db8fdbfccc7d95aaa196d5d0574ef431b

This fixes a decoding failure issue of adaptive scan order in the
error resilient mode.

BUG=aomedia:353

Change-Id: I4b09f168cd0e0efc843a05f82d7e1c05173ee629

Change-Id: I1bf9002c159563d0e5238b26d1515ef305d416dc

This commit makes the adaptive scan order system support multi-
thread encoding. It fixes unit test failure issue associated with
AV1/AVxEncoderThreadTest.EncoderResultTest/0.

BUG=aomedia:353

Change-Id: I61cbf9531c8deab97fb3bb17428d0b2a63cf309a