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Earlier, the superres scale was in the form of:
N/16, where N ranged from 8 to 16.

We change this to the form:
8/D, where D ranges from 8 to 16.

This helps on the decoder side, by making it possible to work on 8x8
blocks at a time.

Change-Id: I6c72d4b3e8d1c830e61d4bb8d7f6337a100c3064

cm->superres_scale_numerator is used for both keyframes and
non-keyframes, and is initialized from either
oxcf->superres_scale_numerator or oxcf->superres_kf_scale_numerator as
appropriate.

Change-Id: Ie46df576ef3830e181643ae591d836449a4bd38f

The restoration tiles (rtiles) divide the upscaled frame, not the
encoded one.

Change-Id: I2d08fe926d694fee7064461685289d3fd1c1de0c

This optimization for speed was useful only when max tx-size
was 32x32. However with tx64x64 this was breaking certain assumptions
causing huge drops in coding efficiency. So I am removing this
optimization for now. This can be brought back latger as a speed feature.
The removal of this optimzation brings back the loss when 32x64
and 64x32 transforms are used.

Change-Id: I15987ea9ff53fa36a2962fe5f156c30a11e809ed

The SSE4 function filter_intra_edge_sse4_1() reads data slightly
past the initialized part of the array. Those data are discarded
later, but causes a valgrind warning. This change avoids the warning
by initializing the array an extra +16 positions.

BUG=aomedia:868

Change-Id: Ib610492cff91492ae379c5d62895773f8747c4bc

To simplify high bit depth commit, the summing the top row and the left
column are extracted out of cfl_dc_pred. This does not change the
bitstream.

Change-Id: I5c9fe91df4942f736c5af29c1d93abb3a6c8501f

Reduce the context model size for key frame modes from 30240 bits
to 4500 bits, i.e., less than 1/6 of the original context model.
The coding performance loss on key frame is 0.14% for lowres and
noise level difference for video sequence. The loss on key frame
for midres is 0.05% and noise level for whole video. The change
on hdres kf coding is 0.015%.

Change-Id: I9e36825e5c5ee6ba35038c3ca349ad1ad3429910

When ext-partition and ncobmc-adapt-weight is on, avoid too large
stack allocations.

Change-Id: I8db74e45cac80c4e5dfd9e20cfc73d9978d1578e

Change-Id: I923931a9dbf828eb13670511852d55c953b479c1

This is undefined behaviour in C99 and could mislead the optimizer.
This fixes the ubsan warning, and still generates optimal code
(i.e an inlined 'sar' instruction).

Change-Id: I36b20a6780532b8c9379b9fbfd970933d56b1bc5

Average speed-up (lowres):
low bitrates: 6.6%
mid bitrates: 2.5%
high bitrates: 0.0%

Average PSNR loss:
lowres: 0.010%
midres: 0.005%

Change-Id: Id34fb247e5e31f04ca324c58142e4b5ac4edacda

On i7-6700:
Predictor    ssse3 v. C
4x4          ~1.3x
4x8          ~1.9x
8x4          ~2.3x
8x8          ~3.4x
8x16         ~4.1x
16x8         ~4.6x
16x16        ~5.2x
16x32        ~5.6x
32x16        ~4.2x
32x32        ~4.7x

Change-Id: Ic12383cf9d4446361d6355eb8a480a3c7602060e

Here, we're testing CONFIG_HIGHBITDEPTH but what we really depend upon
is the actual size of the coefficients.

Change-Id: I33d71e4b38b4b83bb4232346f4d449f20bcf740e

Change-Id: I4f158dd15e4a7a8abb27ad0ad6aed6f8f9fce4f6

Since the CONFIG_EXT_INTER #if/#endif lines have been removed, it's a
bit clearer what's going on here and this patch cleans up the code.

Firstly, the patch pulls the cheap checks on best_mbmode.ref_frame out
to the front of the block, so we needn't call gm_get_motion_vector at
all for compound predictions.

Next, second element of the zeromv array is never used, so we needn't
compute it.

Finally, the patch removes the calls to lower_mv_precision. These
shouldn't be needed, but it's not exactly obvious why not so the patch
adds some comments to gm_get_motion_vector to explain what's going on
and adds an assertion to make sure they are true. It also adds a call
to integer_mv_precision on the early return path of
gm_get_motion_vector, correcting an apparent bug when CONFIG_AMVR is
true.

This patch shouldn't make any difference to encoder or decoder
behaviour.

Change-Id: I0b4a01063574d080bbf6d30187f4e1748c60939d

The performance difference is
lowres: 0.02% gain
midres: 0.07% gain

Change-Id: I68a74462f41db3bf24573cf2a08c8b5b8aa13f5f

This is an adopted experiment.

Change-Id: If33f700c12fb3fd0f8368714d5e9795aad3729d8

This patch fixed loop-restoration subpixel_8t_ssse3 function
so that it works with CONFIG_PIC.

Change-Id: I178efae161a2b4c8388c141c378c99149ea3a847

Change-Id: I4732dbbb71a0db9ac284a4b2ae5f10816e0e9264

Change-Id: I3f30c35bcd1bc623ad0c34c4b954ff71b2fcfd00

Change-Id: I22f4ea3b8348816d4592645e9994b4b0ff29868c

Re-enable test with intra-edge

Change-Id: I189398a2426a8ca66edaf15f91286a2aff9b47b0

Fixes compile failures with unpoison-partition-context and
ext-partition-types.

Change-Id: Ibedab7d927d6bf7329a5fc5a3050aa6272d4b254

Hard code av1_ext_tx_ind[] and av1_ext_tx_inv[].

Change-Id: Ife650d41be3f85d048f5585659ad57e03f54b39b

Change-Id: Ib0d699106583e7072e6287a5a780967b5059efa3

Change-Id: I0b6f56d2bf0482cfbf45525828d6daa6aea187e5

The scan order functions have been changed to support downsmaple for
large transform only, this commit updates the test to reflect the
change and avoid assertion.

BUG=aomedia:873

Change-Id: I63ca607847b68050ac3f9f54077f4f904a8e1ecd

Replace sorting with merging on decoder side.

Change-Id: I77d63c1b2b0569a2e0d0fc239f77d7a90b1275df

Change-Id: I1bea2c214f492754136854a5c48c64a7fcbd7dac

Remove exit() from the source code.

Change-Id: Id49cf65e2131ecf5297e147c4954e448dd42d805

Change-Id: Id8cc58ca56ebeea6b7f499a5fac4fb96e01d797b

Change-Id: If6e84f390c6f92e8e013056c657758ba9e407a71

Change-Id: Idf01b14bed4701ce84fa1c127e01560f4764fadb

Change-Id: Ibb16c76fd593b35dc37ce0425d288e6a405e2e84

Change-Id: I067127a2cd75d038c8f769310028a438c253db5a

Prevents exceeding of stack allocation limit when ext-partition is
use with rd-debug.

Change-Id: Ic05c2c6b918f1f25e0f4b25d22f85cc5ef4671e0

This patch doesn't change the resulting code, but avoids having
duplicate opening parentheses in #if/#else/#endif branches that
confuse text editors.

Change-Id: I0833286173551c16fe9e54e515705307b3468704

bug=aomedia:837

Change-Id: I54233963eac76d7667d5b1350f49ef3108027708

Mostly spurious warnings.

Change-Id: I95a415763a27a448781b9a3f9af80e53c7f98d20

And assert that sizeof(tran_low_t) == sizeof(int32_t).

Change-Id: I0bf1b7f3d1ba63eeea1eee87a9a0fe0b80b95078