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Merge the calculation of intra mode into dist_block()

Change-Id: I97ffc42ba0260355385fd636ca13ec6dd0949e9c

This will allow us to merge the dist/sse calculation of
inter/intra modes

Change-Id: I3047d4bd0a068250544c5c9d2b47a580c7e243e6

In the beginning of encoding and bitstream packing,
the frame context in common of codec is copied to the frame context
in each tile.
Initial prob and context is based on flat probability and
does not come from table at the moment.

The bd-rate change for the test set objective-1-fast
on awcy with high delay mode is:

PSNR   PSNR  HVS  SSIM  CIEDE 2000  PSNR Cb PSNR Cr MS SSIM
-0.77  -1.05      -0.74 -0.67       -0.67   -0.77   -0.88

Change-Id: Ic9105ac68aceb7486cb5f6f1c0b19df5853f2cb9

In preparation for enabling backward updates of contexts for PVQ.
1. Default prob setting for PVQ,
which is based on flat probabilities at the moment.
2. At the end of encoding a frame, average probablities and expected values
of PVQ are copied to the frame context.

Change-Id: I1d087b98e6b0d55ebf8aef696dd986f88197cedf

Change-Id: I23b035340ed16b85a12856256d3115f19700dfb3

Change-Id: I367d5561f53f60df42c3ff6f334b1441c85788bd

When a global translation model is found, the only 3 bits
of precision are used for the motion parameters. This case
uses a smaller precision than the translation parameters
in a global model that is rotzoom or greater.
Change-Id: Ic972e9edf46e301f2894cce2b723960d0297c8e8

Change-Id: I4038d971455626c4c8e93b9b83e9155c5170349e

This commit integrates the level map coding within cb4x4 framework.

Change-Id: Ied9721df0a7ffd21d1d69d68759d91b6c320c179

Change-Id: I215c4bed9ba5c7f4fc93533249610217de14ce54

Change-Id: Idfe23c1aef5d080567094af6e87d65bda3835ae5

Change-Id: I7b855a68c5fedda4e34bfcbbabafa9ba52c09735

Change-Id: I2fd1d6f32b1b395dfdbe556b96dddf65f3cabbbe

Change-Id: I4f7d37af84220971a839f4f8f42aafa1adeb04e4

Change-Id: I35b2b69e3937e70a7923ba76735f035f366de27f

Change-Id: I00554b925c0a870e766bc116c6d9cb02bd47a101

Change-Id: I785a0fbef18adf7cbdbd4f09117d132c7fe69156

Change-Id: I4b77388fa49e29a8302fe8c3276471e8156ce2d5

This will make the code cleaner

Change-Id: I94622b696b0a8d51d28dbbe29c767a62942bc5f3

high-latency, cpu=0:
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0817 | -0.4672 | -0.6651 |   0.1043 | 0.0968 |  0.1063 |    -0.1847

low-latency, cpu=0:
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0860 | -0.7110 | -0.7393 |   0.1018 | 0.0946 |  0.1800 |    -0.1537

low-latency, cpu=4:
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0097 | -0.8022 | -0.7514 |  -0.0115 | 0.0621 | -0.0092 |    -0.3804

Change-Id: I5c2eced295598771c7a74ec15a5f0eb84d872cc9

Change-Id: Ifd55343b701eb753537b9711abd377adcedde8ec

Move most of the code of inverse_transform_block to
av1_inverse_transform_block such that encoder can use the
function as well.

Use av1_inverse_transform_block in av1_encoder_block_intra.
This will make the code cleaner.

Change-Id: I84dbeef2c65e252910606dbea446ce43165d504c

This will simplify the code flow in av1_subtract_txb()

Change-Id: I575da4a74f435b5862d2a848bdedae9856672121

A simpler interface for intra block prediction

Change-Id: I97e3f385746928d87999e6862b1d71a197df0302

This function help us merge subtract block code in
av1_subtract_plane and av1_encode_block_intra.

Change-Id: Ie793d88a218f1082c6fe28900a521f461e34d564

It's less invasive and helps make future changes easier.

Change-Id: I0f858462f14109ace4d76a31daeac4289c94bc6e

EXT_TILE: allocate variables on the heap due to the potentially
large number of tiles.

ANS: initialise tile contexts.

EXT_INTER, MOTION_VAR, WARPED_MOTION: fix compilation.

Change-Id: I43a9d01c2442d97b6a8875712f77d932dce3740d

Change-Id: Idae4934424b3e0c2de659e3f55ea6a47b5b4ceab

Previous code was using options selected for N=8 rather than the chosen
number of options.

low-latency, cpu=4:

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.0077 |  0.0286 | -0.1166 |  -0.0059 | -0.0479 |  0.0025 |    -0.0101

Properly save the best strengths

Change-Id: I629e929c2bc7a0a9592a9e49bfd7898d95174235

Change-Id: I99b15e5270bfefe2eb3e982aeba06ed564540d73

quiets -Wshorten-64-to-32 warnings

ported from libvpx:
710483308 vp9: normalize vpx_enc_frame_flags_t usage

Change-Id: Ice037acb675d1d81bfedf2dfcfa91a8a29a19dfd

Shear parameters for global motion are now computed once
when the parameters are determined.

Change-Id: Idfd53410079a81a81ddd4728f173a0d0ec60230b

When ext-inter and ref-mv are both enabled, this patch
allows the NEAR_NEARMV and NEW_NEWMV modes to pick from
the extended reference mv list, just like the NEARMV and
NEWMV modes can.

Change-Id: Ibcc9e19dba7779422c1c9589d5498159e83bf61e

Ported from VP9 with some heavy modifications

bsize_dist@2017-03-29T23:18:27.564Z -> bcropped_dist@2017-03-29T23:21:00.200Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0966 | -0.0922 |  0.0032 |  -0.0618 | -0.0579 | -0.0441 |  -0.0959

Change-Id: Icdfcf47a9017fd3180e7fbc963196a43c5376c4e

BUG=aomedia:407

Change-Id: I27a7a230bbc701920a996d1e22ae4d22ca8cfead

Handles a rare divisin by 0 case.
Also adds a check on global motion parameters to disable
if the parameters obtained are outside the range that the
shear supports. This fixes a rare assert failure.
Also changes the recode loop threshold somewhat.

Change-Id: I4c6e74b914ac653cd9caa0563d78b0a19a2a8627

SSE2 may be needed for nx4 and 4xn.

Change-Id: I3c10112447fdb5fe51a68bc2c6e2f2641b102723

high-latency, cpu=0:

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.0378 |  0.1946 |  0.1385 |  -0.1159 | -0.2058 | -0.2085 |     0.1353

low-latency, cpu=0:

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.2388 |  0.2234 |  0.3290 |   0.0623 | -0.1716 | -0.1704 |     0.2542

low-latency, cpu=4:

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.4089 |  0.3477 |  0.6132 |   0.1729 | -0.1905 | -0.1610 |     0.5522

Change-Id: I35b8596667d82a127847b209416ad83e3b839a9a

Only blend with the first N neighbors at each side. If the size of
one dimenstion is 8/16/32/64, the max # of neighbors to overlap
with is 1/2/3/4.
Previously we disable obmc mode if there are too many neighbors.

Change of performance in AWCY, compared to disabling obmc if
at any side there are more than 2 overlappable neighbors.
HL improved by 0.02%
LL improved by 0.09%

Change-Id: I93d9a65c6c4aabf0b4a4946e2253d3e2ef21a662

Change-Id: Ibaaed850ddceba9c3db542eaf4a1c623ce6b412b