Change-Id: I0fdb09499196e02709e067f690dff71146ee5114

The self-guided filter speed tests show that:
- The SSE4.1 implementation of FAST SGR is ~35% faster than the corresponding
  implementation of SGR;
- The AVX2 implementation of FAST SGR is ~28% faster than the corresponding
  implementation of SGR.

Change-Id: Iecdc1f8cee79500084c71d06dbb02d804272aa99

Adds an experiment for fast sgr computation where for the r=2
filter, computation of the A, B stats are computed for every
other row and averaged in between.
The motivation is to improve software performance with hopefully
minimal loss.

Change-Id: Ie36687826524dc18c1fbb7f6becff244187bf8da

There is a special case with certain frame heights, where we
end up with a loop restoration stripe which ends 1px above the
crop border.

Previously this case was handled in quite an ugly way, which also
disagrees with the spec (+ isn't great for hardware). This patch
changes things to match the spec.

Specifically, the old method was to sometimes upscale one extra
row of deblocked pixels so that we could always have a 2px
"below" border for each processing stripe. The new method is to
only use rows inside the crop border, and to duplicate them if
necessary.

BUG=aomedia:1264

Change-Id: Idf8ab510e1091dc3f5b257de60e16bca214d8dc4

BUG=aomedia:13

Change-Id: I9df343f4a6a809b09446ff1f2083c38771ab068b

Profile 0 now supports 10 bit, therefore no longer means input_shift
at 0.

Change-Id: Idae429b88ee5c073ee6e939a88d569c5ffde2b0d

Move cos_bit from txfm 1d cfg to 2d cfg
Each txfm stage only uses one cos_bit

This is a lossless change and it speeds up encoder by 2%

Change-Id: I45d398761e4729b8c4c37729571fe3765cb0c83f

Change-Id: I6532e20c958d5bf6f6d73a6f076664e1b74ba055

Skip the rate distortion search over last 2/3 reference frames for
the reference motion vectors derived from non-nearest neighbors.
The overall coding performance change is in the noise range - 0.05%
better. Speed up the encoding process by 20%.

Change-Id: I823b8ca2805ae332f4c9bc8ee255069a82db4331

In rd_pick_partition(), the first one or two blocks for the partition
types HORZ_A, HORZ_B, VERT_A, and VERT_B may be already evaluated,
during the evaluation of SPLIT, HORZ, and VERT. This patch saves the
RD pick mode results and tries to reuse them to remove the duplicate
RD mode evaluation operations.

This patch should not incur any coding performance loss.

Testing on a few lowres frames: when CFL is off, this patch obtains
>10% encoder speedup.

Change-Id: I932e233bc93873de62a88230254df44494236dde

AVX2 Code for av1_convolve_2d_sr_c()

Change-Id: Id8a2192b78bbb2c6ac22da3134a7c256941985c8

These flags provided compatibility with configure but have
no effect in cmake builds.

Change-Id: I2dbb71d9aeaae759cc3c4a46917e3840d696328d

In-tree builds are explicitly disallowed by cmake. Any of these files
showing up in the source tree should be cause for concern.

BUG=aomedia:1254

Change-Id: Iae42c17cbadb6554c6a95bda14daf5ac67e352a7

At least the changes that don't conflict with 4.0.1

Change-Id: Iaa2fda027b8ab2b023d608cf5ec7b377a72b851e

Change-Id: I243e2a3cbae5b4eebe7fbabcb9f55552e9f13bd8

Make the per transform block kernel selection process unified with
the rate distortion model used in preliminary mode search. This
makes the txk-sel model search space same as baseline.

Change-Id: I82a2d94e88a03c88154582575ced500197f8a409

Change-Id: Iea0e8665cdd5b9bc0fe17930add7068443765ea9

It's more efficient to use av1_cost_literal() instead.

Change-Id: I50727d4a4ee06492b373c2e7831c224c5eae8735

Change-Id: I9e16b5de0a3ae1814982660434812d417955d94f

An improvement in coding efficiency for higher resolution
sources. Plus having this on by default will guard against
256x256 LRU support not being inadvertently broken.

Change-Id: I171b3c310eab72e27390e9ad0aa9c362f7fbb508

This commit replaces hard coded FRAME_ID_NUMBERS_PRESENT_FLAG with
error_resilient_mode, which properly reflects the intention of the
experiment, i.e. "signal the complete state of the reference buffer
explicitly for each frame" to deal with possible frame losses.

Change-Id: I7130c110d26c6a8e1cf1266c05482b768cf352f9

This reverts commit 2eeadab1.

Reason for revert: Did not address final review comments before landing.

Change-Id: I29089767857bd20b3a3e42322e3887fb7027559d

configure:  --enable-experimental --enable-scalability

New applications:  scalable_encoder, scalable_decoder

scalable_encoder:
  * Encodes inputs as 2-layer (same size) stream
  * Encodes as obu file (OBU_NO_IVF must be enabled)
  * Base layer encoded in IPPPP where P's reference
    only the previous (in time) base layer
  * Enhancement layer encoded using its base layer as
    sole reference frame
  * Base layer encoded with fixed high QP
  * Enhancement layer encoded with fixed low QP

scalable_decoder:
  * Able to decode scalable stream generated by
    scalable_encoder
  * Able to decode any single-layer stream encoded
    by aomenc
  * Outputs base layer as out_lyr0.yuv, and enhancement
    layer (if they exist) as out_lyrN.yuv (N = 1, 2, 3, ..)
  * Able to decode N layers (more than 2)

Change-Id: I8555735db71e5b9b6f900ffdf978e0ad6f6bfc00

Change-Id: I2d2ce75c184011884de8a015a6666b5209de2082

Change-Id: I5ae45abe5145dedf9751adbeb81a111a49df7eb5

Change-Id: I6e251328b2934130992dbd355cfdffc3c721d357

Let the second stage of 10 bit inv txfms fit within 16 bits

Change-Id: Ia087d65484cd410651190dcd9d3292cce6594d34

Change-Id: I08e4686b0bcf19a3c318a831bc338c9e58f3a127

Maximize cos_bit's precision

Change-Id: Iad5d3915823f5c1c25a0caa3bd012d60caa2d521

Only check cos_bit range if cos_bit is not NULL

Change-Id: I286fc056812b20242cc962a8b008af7093d05b1d

This will simplify the range management of rect txfm

Change-Id: Icf678fe735dd299c6c42a215c592611025e87ba6

Change-Id: Ie0bc1dd68f7a5d81e49da0ae6f855e572e12aa10

(1). index may go out side of range
(2). when d0 <= d1, comparison is invalid.

Performance impact on Google lowres testset:
Turn on jnt_comp vs baseline,
Without fix: -0.211% gain
With fix: -0.357% gain

BUG=aomedia:1239

Change-Id: I761522bba8396bba0d4108d710030b472939cf32

The test encodes 5 frames of a video using the --monochrome flag and
verifies that the decoded frames satisfy:

- each frame's monochrome flag is set to 1
- each frame's U and V planes are set to a constant, and this constant
  is the same for all decoded frames
- the initial frame's Y PSNR value is 'high enough'
- the Y PSNR values remain fairly constant across all of the frames

Change-Id: I4239ddfb745ed9746547737b4bc99963c71e51c0

Encoder: Prior to this patch, some chroma data was calculated and
later discarded when in monochrome mode. This patch ensures that
the chroma planes are left uninitialised and that chroma
calculations are not performed.

Decoder: Prior to this patch, some chroma calculations were still
being performed in monochrome mode (e.g. loop filtering). This
patch ensures that calculations are only performed on the y
plane, with the chroma planes being set to a constant.

Change-Id: I394c0c9fc50f884e76a65e6131bd6598b8b21b10

Some array elements were defined and left uninitialised. This wasn't causing a
problem, as the elements were later ignored, but it did cause Valgrind to
produce warnings.

The function now initialises the full array immediately after its definition in
order to quiet these warnings.

BUG=aomedia:1244

Change-Id: I5083f1f4008cb3ab70a4af4d1d2573dee8793303

Can reduce decoder runtime by about 7 percent.

Change-Id: I4ee3eea9de867d065d03a176f242e286a4899004

Change-Id: I33bb6e902e3be2847ae8101199d9cbd0e1e5c38d

By avoiding break CPU's pipeline,
this patch achieves a small encoder
speedup at the range of 0.2%~0.71%.

Change-Id: I398cb09f8eb91695e3258091ff2f82f06ab74145

explicitly disable segmentation when ref frame has different
resolution

BUG=aomedia:1205
BUG=aomedia:1223
BUG=aomedia:1256

Change-Id: I6db51116db308514d572eb465c2453403e64e1f2