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Change-Id: Ie20bd0b05bbf3128933f10787aade7b63c98b52a

* Run 45 degree wavefront coding for palette index
with palette_throughput experiment.
* Remove palette index interleave.

Change-Id: Ibb57004401f817dec8b00bc2a941d70a26783ff9

Also remove forward updates for delta_q when EC_ADAPT
is enabled.

Change-Id: Idf71b57bfe7763bc60595bc45768e624dd7b67bd

Change-Id: I378eb5b2c03a4c30d261128bcf9ef00ea987ed40

Split it into two experiments:
q_adapt_probs: multiple initial coeff prob tables based on q-index
subframe_prob_update: multiple backward prob updates within frame

Change-Id: I78041ebd4ba34afc9152f6861225f63c2e8eb686

Delta Q is coded with a single tree context.

Change-Id: Ie1e56c70285e948232049bfb4a51ad0e9ee25f75

Removes redundant deblocking filtering operations and buffer copies,
during search for the restoration filters.
Also, makes the order of cdef and loop-restoration consistent.

BUG=AOMEDIA:373

Change-Id: I571e331f9dfadfd2c1494f279e50510ec212ea29

This change improves efficiency and means that tile groups
cause negligible loss (+0.03% BDR) in the current default
encoding configurations (1 tile group no matter how many tiles)
with frame-based wrapping.

In future, when wrapper formats support tile groups, lengths
can be omitted from the last tile in every tile group.

Change-Id: Ia701e6720208fbfa727f9aef0b692a6aafbcc93f

This patch adds a decoder control that exposes frame data via a simple
 callback.

Change-Id: Icae73ae6b5da8a7783db9fadb1fff4a85d77174b

Resolve compiler warnings when the two experiments are turned on.

Change-Id: I568ddd74afad6fe720e1f46d0119df08fd2f689b

Change-Id: Idf8f03052a7e21b8a273986204038545573d7962

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

Change-Id: I62e28c8586f5d04a1e1be4ea5a2551d3123fde9f

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

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

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

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

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

Change-Id: I68fdb8e079a2464d80b3a4a990005c49baaaf0b8

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

BUG=aomedia:353

Change-Id: I4b09f168cd0e0efc843a05f82d7e1c05173ee629

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

Noticed that some ALTREF_FRAMEs could have used compound modes for its
prediction but have been labeled as SINGLE_REFERENCE mode in the frame
header. This experiment is to remove the COMPOUND_REFERENCE mode from
the frame-level reference mode choices and only leave SINGLE_REFERENCE
and REFERENCE_MODE_SELECT the two choices in the frame header.

When turning on both ext-refs and ref-adapt, compared against ext-refs
itself, a small gain is achieved. In PSNR, the bitrate saving gains are
as follows:

lowres: Avg -0.120%; BDRate -0.128%
midres: Avg -0.155%; BDRate -0.128%

Change-Id: I2cfff8a6b7eaa65ef863dbdbc4dd086d3b586f8c

Change-Id: Iad2b526d65865cbcb2119aca21686563ca8e97fd

This ensures we operate at the same precision that Daala uses, which matters
when activity masking is enabled, because of the gain companding.

Metrics from Patchset 4 (which had slightly incorrect rounding):

With activity masking (5 frames only):
av1_pvq_AM_ref_5f@2017-02-07T03:37:53.702Z -> av1_pvq_AM_derf_fix2_coeff_scaling_5f@2017-02-07T00:12:24.427Z

    PSNR |  PSNR Cb |  PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
  0.6653 | -12.3177 | -12.1858 |   0.3350 | 4.1013 |  2.0964 |    -4.0539

In particular for Netflix_Crosswalk_1920x1080_60fps_8bit_420_60f.y4m
 -5.0589 | -22.3077 | -21.2188 |  -7.0389 | -3.3715 |-5.7794 |   -13.1891

I.e., it fixes the large regression with AM on this sequence, and
 substantially improves chroma (at a lesser cost to other metrics).

Without activity masking (5 frames only):
av1_pvq_ref_5f@2017-02-07T03:52:51.279Z -> av1_pvq_derf_fix2_coeff_scaling_5f@2017-02-07T00:12:48.873Z

    PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
  0.0989 | -0.0322 | -0.0464 |   0.1883 | 0.0795 |  0.0579 |     0.0923

Change-Id: I46b808b7c8e4733465f8bebc8336dfd5b75783ec

The new_tokenset experiment replaces the unconstrained tokenset with a
multisymbol alphabet in an inventive way.

Tested configurations:
new_tokenset + ec_adapt, new_tokenset, ec_multisymbol

Change-Id: I846ab2e51c2a1dc3f2f9904ed8c47a8e98f853c5

Change-Id: I1050b69045407381d4626b65a0bf6f35957a66f4

RD search and trellis encoding are still sub-optimal.

Change-Id: I233979909118241a0c78761c1d5c2cd6857915e0

BDRATE results:
lowres: -0.880% (up from -0.844%)

Change-Id: I017c0beddcc687148fed33c1e9963e05f1eaf6ea

Change-Id: I378b677cf579441ba0a9014a8a77a1cf3f8b5689