Change-Id: I8caa3e0ca51b733b3af87d24ee511f6bb52222d1

Change-Id: I9b6f99768c60e743d2fadfaabc532e7c15dc40f3

This reverts commit 5ca25dfc.

It breaks high-bitdepth builds with:
--enable-aom-highbitdepth --enable-experimental --enable-dual-filter
--enable-entropy --enable-ext-inter --enable-ext-intra
--enable-ext-partition-types --enable-ext-refs --enable-ext-tx
--enable-filter-intra --enable-loop-restoration

or more simply:
--enable-aom-highbitdepth --enable-experimental --enable-ext-inter

BUG=aomedia:463

Change-Id: If814131e634e4411569859f7426efafe158b83fd

This is the second patch.
* Add delta loop filter level at super block level.
* Add symbol coding for delta lf syntax
* Allow delta lf to work with segments

Change-Id: I393a021a875d03c6e113127cbb3543fc077308e4

Change-Id: I359d100548ed337d643a421591243565b08945ed

Added 2 tile encoding modes:
TILE_NORMAL mode supports the large-scale tile coding up to 1024 x 1024
tiles;
TILE_VR mode supports the large-scale tile coding and also the decoding
of a single tile.

TILE_NORMAL mode allows the non-vr content to be encoded in multiple tiles
without using the coding tool that are designed for vr applications.

Change-Id: Id804806a1bbcb916b7f5dc7e2c5509d88f3defcb

Change-Id: I246da885154303d139f5d97c53ebfc55d6dc82ca

A bit and a three bit literal have been added to the uncompressed frame
header for use by the frame superres experiment.

The bit is true if scaling is to be used, and is immediately followed by
a three bit literal that encodes the scale to use. If the first bit is
false, scaling is disabled and the scale factor numerator is set to the
denominator (ie. 1:1 scaling). No literal follows if scaling is
disabled.

The denominator has been defined as a constant 16. The literal is biased
by a defined constant of 8 - allowing fractions from 1/2 to 15/16
scaling in steps of 1/16 when scaling is used. Experimentation will be
needed to discover which of these are useful.

The bit and literal are immediately after the optional render_width and
render_height, so that the superres parameters can be written and read
just after the regular width and height, without interfering with the
render_size parameters.

This patch also adds an arbitrary write to make the scale 1:1, so as to
not trigger any scaling until it's ready.

Accompanying encode and decode helper functions are added.

Change-Id: I8caa6247c73f5c7f84ef1fde1e80eb9b20bde0e3

Adds the superres scale numerator, width, and height to the AV1_COMMON
struct for later use in encoding and decoding. This value will also be
added to the uncompressed frame header.

A #define statement is also added to represent the denominator - 16.

Change-Id: I4acec39ef3c67fa9f7118dac28daec3a2d734ed5

* Dering and clpf were merged into a single pass.
* 32x32 and 128x128 filter block sizes for clpf were removed.
* RDO for dering and clpf merged and improved:
  - "0" no longer required to be in the strength selection
  - Dering strength can now be 0, 1 or 2 bits per block

              LL    HL
PSNR:       -0.04 -0.01
PSNR HVS:   -0.27 -0.18
SSIM:       -0.15 +0.01
CIEDE 2000: -0.11 -0.03
APSNR:      -0.03 -0.00
MS SSIM:    -0.18 -0.11

Change-Id: I9f002a16ad218eab6007f90f1f176232443495f0

Removes domain transform recursive filters and non-approximate
guided filter code.

Change-Id: Ib7ae7a6b6526a0908b3dc1787ab3561442da4e2d

Delta Q is coded with a single tree context.

Change-Id: Ie1e56c70285e948232049bfb4a51ad0e9ee25f75

The result is identical to enabling both deringing and CLPF

Change-Id: I71db5ba9e21fcaf11ad87e94841eaf80be58c0a8

Replaces division with multiplication in self-guided
filter.

The guided filter requires computation of:
n^2.s^2/(n^2.s^2 + n^2.e).
This is now implemented by computation of n^2.s^2/n^2.e followed
by using a lookup table for the function f(x) = x/(x+1).
To compute n^2.s^2/n^2.e, we use an integer multiplication based
implementation which becomes feasible since n^2.e can only
take a few values and their corresponding multipliers can be
pre-computed.
There is also another divison by n, that is also integerized.

Change-Id: Id7b81bbafead0b8f04a1853ec69b9dec423bb66a

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

Change-Id: I68fdb8e079a2464d80b3a4a990005c49baaaf0b8

This commit renames deblocking_across_tiles to loopfilter_across_tiles, 
to get ready for dering and clpf integration.

Change-Id: Id25b051da9b1e5cb92f35a9619662597462d9537

This follows the naming for the other frame types, and allows libaom
to be compiled against other libraries that also #define NONE.

Change-Id: Ic2e2814587bbc5ea67385a9af775396d29b7dde0

At the edges of the picture only a subset of partitions are legal. Add
new contexts for these borders so they don't distort the probabilities of
the interior of the image where all partitions are legal.

Only include one context for each block size of each border direction
because so few blocks fall into these contexts to begin with.

objective-1-fast:
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0294 | -0.0911 | -0.2382 |  -0.0481 | -0.0441 | -0.0450 |    -0.0454

derf144: -0.135
lowres: -0.124
midres: -0.076
hdres: -0.078

Change-Id: I909b98eebb7e49273cde90154c8408febe334158

This commit enables the cb4x4 mode to support ext-tx experiment. The
coding performance gains are:

       ext-tx   cb4x4    ext-tx + cb4x4
lowres  2.7%     2.6%      4.9%
midres  2.1%     1.2%      3.0%

Change-Id: I6c566b6073527262abcdbb1a0c6bcb8729988f3b

This commit adds a new experiment to allow disabling of loop filtering
on tile boundaries. It is implemented by adding a syntax field
"loopfilter_across_tiles_enabled" into the uncompressed frame header. 
If it is set to 0, decoder and encoder will disables loop filtering for
block edges that are also tile boundaries.

Change-Id: Ib80bfd82d49c74f1ba46ae18ceedb30704ac8aa5

Also fixes a bug with rectangular transforms

Change-Id: Id459c18d8fdc767678452e0b20c4168a412f4de7

Replace hard coded numbers with mi_size table access.

Change-Id: Ia5b8802de9f0128edf2c71542c703f317c7f61da

The main objective is to reduce computational complexity.
The domain transform filter has an effect of edge preserving smoothing
at a lower computational cost than the bilateral filter, and can be
readily paralelized.

A little drop in coding efficiency about 0.06% for lowres, 0.16% for
midres.

Change-Id: Id949406b7e5afe9b64588d130065c63a76e4f3f9

Change-Id: Id80f76ea2598daa93e693c5efe29b782abe33957

Scale the counting scheme to operate in the unit of 2x2 transform
block size and 4x4 coding block size.

Change-Id: I7c4155c3b29df109278187d5ce0aa78d85a6245e

This filter is meant to replace the bilateral filter,
but is currently added in addition to the bilateral filter
for testing.

Change-Id: Ia529701e69833d47c11b3367d5bf804eb8498079

Correctly use FILTER_INTRA_MODE enums instead of PREDICTION_MODE enums.

Change-Id: I3d89c0c5a926b9f8603b8492e7c8c9b32b41d4cc

Updates to enums and mappings as needed.

Change-Id: Ie3a71031c74a5d4caa5308f0e210ed23c2361e95

Add 2x2 block size syntax to the codec system. It prepares for the
4x4 coding block unit for 420 format. This change retains the same
coding statistics.

Change-Id: If8e9a31bd6b4b75bc994539dc4dd8021d455ba57

Change-Id: Idc44fa29c70c9bb63c9b04cfba679fd05d34fdff

This is added as part of ALT_INTRA experiment.

This uses interpolation between top row and estimated bottom row; as
well as left column and estimated right column to generate the
predicted block.The interpolation is done using a predefined weight
array.

Based on experiments, the currently chosen weight array was created
to represent a quadratic curve, but can be tuned further if needed.

Improvement from baseline on Derf set:
ALL Keyframes: 1.279%

Improvement from existing ALT_INTRA:
ALL Keyframes: 1.146%

Change-Id: I12637fa1b91bd836f1c59b27d6caee2004acbdd4

Includes:
Various table updates and fixes to support 64x64 transforms.
Entropymode updates to support tx_size expansion to 64x64.
tx_mode changes to support an ALLOW_64sXx64 transform mode.

Change-Id: Ib9098cfe27d0c015fe3be6ae13e7d09576771b9e

Adds 64x64 default scan orders
Adds 64x64 coefficient entropy models (just copy the 32x32 ones)
Entropy context updates for 64x64 transform
Various misc. changes to support 64x64 transforms

Change-Id: I2c0bc4ba540886dd196e87a78b205407ad3e866b

This is currently just a refactor and creates no change in performance.
It allows new compound types to be added easily in the future to
facilitate experiments with segmentation masks.

Change-Id: If48fed216d482454fabb45a304b4220ada0dbdee

BDRATE:
lowres: -1.01% (up from -0.7%)
midres: -1.90% (up from -1.5%)
hdres:  -2.11% (up from ~1.7%)

Change-Id: I1fe04ec9ef90ccc4cc990e09cd45eea82c752e0c

For higher level fwd and inv transform functions.

Change-Id: I91518250a0be7d94aada7519f6c9e7ed024574fb

Remove redundant experimental flag. This does not change the coding
statistics.

Change-Id: I35b3cb04025c5c2d2744312e5efc00d0473c990d

Count the transform block partition context in the unit of pixels.

Change-Id: Ibb66f053526ed347ad0274b78db7ac35cc086b0e

This commit allows the partition context model to account for the
maximum transform block size of the coding block.

Change-Id: I22b91e85fff70faa974afd362ce327d3f2eda81d

Make the codec support 2x2 tranform block unit for chroma components.

Change-Id: Ic454535bd5620abe88a2e99789160cc4664ee518