Change-Id: I41fe97db4cee333e601356253f28186ef4036237

Change-Id: Iadfcc19db19295c493dc7c26718e68720cb782cd

Change-Id: Ib03758eb5ab32ee7d0f87d216bc5fad591578597

This integration only covers low bitdepth mode for now

The performance of Convolve_round on top of compound_segment
revives from 0.475% to 0.612% on lowres

Change-Id: I21606c79d0a22c0834966730358267c082d8071e

Tile groups are now an integral part of the codec.

Change-Id: I620a88ec7a44b057d5cce0bf6cf602822a3339a9

This experiment was provisionally adopted on 2017-06-27.

Change-Id: I5ebce1df7cec42804df553a26848ddfe8a449a59

Fix width/height for U, V planes.
Previously, width/height will be right shifted multiple times
in the loop.

Change-Id: I3581cb948c1918e39c30eb5c99ac958df5d3ed31

For chroma DC_PRED, cfl_predict_block and av1_predict_intra_block are
redundant,

Results on Subset1 (compared to  e1c27392 with CfL enabled)

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
0.0000 |  0.0000 |  0.0000 |   0.0000 | 0.0000 |  0.0000 |     0.0000

Change-Id: Id50f3682eaccb5370e29d66af8a9967a30d135e6

Change-Id: I1a43ed3c13ce1f8a0a6673f8d54fc82abcfeca5b

Change-Id: I8987dbc05dc79d33eeadebb427095fafa319e9fd

Change-Id: Ifdf75f61f0c0cc2f95545f79439bae2accbe7b01

Change-Id: I11abc5448622265183abd0a58268c190b5891576

Change-Id: Idbe1f71c49d0240e10d82081feeec9029898eecd

- Split av1_update_boundary_info() into two functions to avoid
  unnecessarily checking which goes through each mi block.
- av1_setup_frame_boundary_info() sets up frame level boundary,
  i.e. non-tile case, which is called in frame level only.
- av1_setup_across_tile_boundary_info sets up tiles boundary,
  which is called per tile, in multiple tile case.
- Decoder running time reduction: 8.72% (1080p, 25 frames, 4Mbps).

Change-Id: I2fc42d4281c77bce4a7dab5d208347308cfbe579

This CL adds an extra alt-ref reference frame, namely ALTREF2_FRAME,
and designs the contexts for ALTREF2_FRAME.

Change-Id: I12fe8629b868aebf6c2b54260fca5abc38f90ae6

Handle the first color index in the tokenization process, along with the
other color indeices.

This patch also includes some minor refactoring changes.

Test results verify that there is no implact on compression efficiency.

Change-Id: I7de51c18a52f337320331b5e8d63dfea3cf510f0

Large rectangular blocks (BLOCK_64x32 and BLOCK_32x64 in baseline) don't
have corresponding transform sizes.
So, for such blocks, we revert to performing 2 predictions of square
transform sub-blocks (TX_32x32 in baseline).

Change-Id: I77e79223fbff514b5706b103de3f02401dba7ffe

Make the intra prediction boundary condition account for the
64x64 processing unit constraint. This avoids a rare enc/dec
mismatch issue in 128x128 intra coded block.

Change-Id: Idb05cae8b17ae94c7a4e49e5d58b5865e5fc2f7d

New deblocking filter that smooths block boundaries in an estimated
direction of object orientation.

1. Select the proper direction for deblocking filtering.
Compute abs gradient line by line for the block.
Select the direction with least sum of abs gradient.

2. Apply deblocking filtering for a block along this direction.
Apply directional filtering for Y, U, V planes.

Coding gain on Google test set:

%	  	avg_psnr   ovr_psnr  ssim
lowres  	-0.129 	  -0.136    -0.277
midres  	-0.103    -0.127    -0.188
hdres	  	-0.159    -0.158    -0.173
screen_content  -0.408    -0.397    -0.695

Change-Id: Ie8646dcc163ace5d8faf5e502b38342d885efc30

Change-Id: I9a0470cb47f953cfdb026fb699cdcc000a8deca9

This adds the new transform to the list of possible transforms.
The impact on performance is in the noise range because the transform
implementation currently performs DCT as a placeholder. This transform
will initially only have an implementation for TX_32X32 and it is
skipped in the tx search for smaller transform sizes.

Change-Id: Iab2faddc525b478ca06972a753428a4f4ef53ac6

In ext_tile experiment, when cm->large_scale_tile is 1, prev_frame_id can be
the same as current_frame_id, which is prohibited in reference_buffer
experiment and causes "CORRUPT_FRAME" error to be reported.

In this patch, enable/disable reference_buffer according to large_scale_tile
value, and thus make these 2 experiments compatible.

Change-Id: If64943acb91e7a7b859db4e2ac62581e9b53ef85

Process the intra block coding in maximum of 64x64 block unit.
This allows to simpilify the hardware design for 128x128 level
block coding.

Change-Id: I6ef1dd8549bdb53b2d2394c6aa7d61cea93686bf

This commit makes the maximum transform coefficient coding unit
64x64 for inter coded blocks. It allows the hardware design to
reuse the existing 64x64 coding pipeline for 128x128 level blocks.

Change-Id: Ibadd59cf7e652984456cac621ec2294d48cf4507

A framework for computing a distortion at 8x8 luma block level
during RDO-based mode decision search. New 8x8 distortion metric can
be plugged in by way of this tool.

Existing daala_dist now uses this experiment as well.
Other possible applications that can make use of this experiment would be
a distortion meric, which should apply at 8x8 pixels such as PSNR-HVS, SSIM, or etc.

A rd_cost for final coding mode decision for a super block is
computed for a partition size 8x8 or larger. For a block larger than 8x8,
a distortion of each 8x8 block is independently computed then summed up.

The rd_cost for 8x8 block with new 8x8 distortion metric is computed
only when the mode decision of its sub8x8 blocks are completed.
However, MSE distortion metric is used with sub8x8 mode decision. Thus,
early termination is also determined with the MSE based rd_cost.
Because the best rd_cost (i.e. the reference rd_cost) during sub8x8 prediction
or sub8x8 tx is based on new 8x8 distortion while each sub8x8 uses MSE,
the existing early termination cannot be used (And this can be the one of possible reason
for the BD-Rate change with this revision).

For a sub8x8 prediction, prediction mode for each sub8x8 block of a 8x8 block is
decided with existing MSE and then av1_dist_8x8() is applied to the 8x8 pixels.
(There is also av1_dist_8x8_diff, which can input diff signal directly)

For a sub8x8 tx in a block larger than 8x8, instead of computing MSE distortion for
each sub8x8 tx block, we wait until all sub8x8 tx blocks are encoded before av1_dist_8x8()
is applied to 8x8 pixels.

Sub8x8 prediction and transformas were most of tricky parts in this change.
Two kind of distortions, for a) predicted pixels and b) decoded pixels
(i.e. predicted + possible reconstructed residue), are always computed during RDO.
In order to access those two signals a) and b) for a 8x8 block after
its sub8x8 mode decision is finished, a) and b) need be properly stored for later retrieval.

The CB4X4 makes the task of accessing a) and b) signals for sub8x8 block further difficult,
since the intermediate data (i.e. a and/or b) for sub8x8 block
are not easily accessible outside of current partition unless reconstruced
with decided coding modes.

Change-Id: If60301a890c0674a3de1d8206965bbd6a6495bb7

This experiment is to add ALTREF2_FRAME to allow 2 altref backward
predictions. Each video frame will then have up to 7 reference frames
to choose from:

(1) 4 forward predictive references, namely
LAST_FRAME, LAST2_FRAME, LAST3_FRAME, and GOLDEN_FRAME; and
(2) 3 backward predictive references, namely
BWDREF_FRAME, ALTREF2_FRAME, and ALTREF_FRAME.

The tool of "altref2" is built on top of the "ext_refs" experiment.

Change-Id: Idbb0bb53b43c5c2c7baf4959331fc5a31c77a118

convolve_avx2.c only has symbols when CONFIG_CONVOLVE_ROUND is
enabled. Move it to the correct location in av1/av1.cmake.

Change-Id: I521f88262f10500ce7d9f81371be31af0a588a95

Add CONFIG_INTER_STATS_ONLY, currently defaults to 0.

Change-Id: I495ceaa698e34a5ab5b5456355013fca684d4834

Use the row and column indexes to fetch txk_type, which allows the
chroma components to derive the tx type from the corresponding luma
components. It improves the coding performance of txk-sel by 0.18%.

Change-Id: I3f4bca5839e13ae95e51053e76cd86fe58202ac9

Rename local functions and make them static.
Remove unnecessary header file and corresponding includes.

Change-Id: I4b09e3949e7207754753997ff359992bd348d488

Screen content tools can be forced on or inferred by color counting.
This prevents the inferred status of the tools from getting clobbered
when controls are evaluated.

BUG=aomedia:656

This also fixes the build with --disable-palette --enable-intrabc

Change-Id: If815a1eff2f9419117477f14cda143dd669c87c6

This reverts commit 1b5328e0.

This commit has some pretty negative consequences with block copy. I
need to be able to force block copy on for arbitrary sequences while it
is still in development, and I need to be able to keep the palette
enable status between block copy and non-block copy runs.

Change If815a1eff2f9419117477f14cda143dd669c87c6 will prevent
allow_screen_content_tools from getting clobbered and still allow us to
force it on.
BUG=aomedia:656

Change-Id: I7a2f4207b5d2da35aec7870250e8b330c58a0e13

this change enables parallel_deblocking by default after it has been
officially adopted. the parallel_deblocking_15taps experiment is merged
into the parallel_deblocking experiment so it is removed to clean up
the code. internal compile flags are added to disable 15 tap for both
luma and chroma plane for future experiment purpose. the internal
compile flags are disabled by default.

Change-Id: I1668fd2cb7676d756c52263d6993241618d33ee6

Change-Id: I181b473a6ae4b40d47682afbe136aa4aa4716ad2

Change-Id: I2a4041a440d0e9bbaf4bc85176501e171a5736f8

This flag will allow us to skip key frame's stats
Therefore, we can test inter frame performance when frame number
is small. The inter frame's stats won't get underwhelmed because
of key frame's stats

Change-Id: I9eaa8e5775fb2e740406cfa4b4f64f96f180d9db

Change-Id: Ief8ce2ed9f39616f0aa173bd6546b9098cc8a8ad

Disable the 2 sample adjustment when chroma_sub8x8 is enabled.

Bdrate: midres: -0.02, cif: -0.0

Change-Id: If86a64b49a2f5b284bc833f36d9f8a05235741bc

Changes:
- Centering sprite on ARF index
- Only uses ARNR frames
- Case for CONFIG_EXT_REFS

Change-Id: Ib9ccc3f53b01e06845f283c30a5cf66d7252b4cb

Change two similar structs, FWD_TXFM_PARAM and INV_TXFM_PARAM,
into a common struct: TxfmParam. Its definition is moved to
aom_dsp/txfm_common.h to simplify dependency.

This change is made so that, in later changes of the LGT
experiment, functions requiring FWD_TXFM_PARAM and
INV_TXFM_PARAM, such as get_fwd_lgt4 and get_inv_lgt4, can
also be unified.

Change-Id: I756b0176a02314005060adbf8e62386f10eeb344