This is purely a refactoring patch and has no functional effect.

Uses of these masks can be arranged such that all input blocks are
contiguous in memory (stride == block width). In this case 1D versions
of  operations can be used. 1D vector operations have superior performance
over 2D block equivalents as they are more processor cache friendly and
they can do away with a second loop overhead.

Change-Id: I2b76c9888aea2c857cc497e8a4b2841fd3dad54e

BUG=https://bugs.chromium.org/p/webm/issues/detail?id=1224

Change-Id: I17b76fcf0d8c191850350d5aa50dcc007b8b0cdc

Change-Id: Ifbcd0714fcf994c43b69255185456c7a255df66c

130% speed increase for keyframe encoding, with 0.4%
compression loss.

When kf-max-dist=150, 1.5% speed increase with 0.03%
compression loss.

Change-Id: I4cf7314ab95b9eb6dd17f314aca8955522c82676

Seperate prediction mode and tx type search for inter
modes. Enabled for speed >=1.

baseline:
speed increase     40%
compression drop   0.30%/0.29% on lowres/midres

ext-tx:
speed increase    160%
compression drop  1.08%/0.95% on lowres/midres

Change-Id: Ieb34b1ee80df6980d16e26a5783e08cc0deae55b

Add a speed feature to seperate prediction mode and tx type search
for intra modes: search for best intra prediction mode with fixed
default tx type first, then choose the best tx type for the
selected mode.

Coding performance drop:
baseline
  lowres 0.10% midres 0.08% hdres 0.14%
with ext-tx
  lowres 0.14% midres 0.25% hdres 0.20%

Speed improvement is 20% for baseline and 17% for ext-tx.

It is turned on for speed >= 1.

Change-Id: Ia5e8d39e8a4e2e42c521bfde938f8b6a98ab24f9

This is for the bidir-pred experiment. Previously the length of the
bi-predictive frame group interval is fixed at 2, i.e. one
bi-predictive frame may be inserted every other frame. This patch
makes the length adjustable, i.e. any positive number may be
specified, but the use of the backward ref will be turned off if the
bi-predictive frame group interval is larger than the golden frame
group.

Further, an additional rate factor level has been added:
INTER_LOW
, which applies to LAST_BIPRED_UPDATE frames that are not used as
references.

Change-Id: I5514d34a64dd486bbb5756c2d0612946f598a789

input_, ref_input_ and output_ were being allocated with new[] followed
by vpx_memalign, remove the former

Change-Id: Ia16d0f9b9317042a24445095ad3c284f4e7bb481

No performance changes.

Change-Id: I001068330ea217a993aee9b79d7ffead0d23100e

For the cases where no reference data is available.

Change-Id: Ibf1ac9b7073acc2c7fc44da893f3d608dc74bc1e

- tx_size: 4x4, 8x8, 16x16.
- tx_type: FLIPADST_DCT, DCT_FLIPADST, FLIPADST_FLIPADST,
  ADST_FLIPADST, FLIPADST_ADST.
- Encoder speed improvement:
  park_joy_1080p_12: ~11%, crowd_run_1080p_12: ~7%.
- Add unit test cases for bit-exact against C.

Change-Id: Ia69d069031fa76c4625e845bfbfe7e6f6ed6e841

Major parts have been implemented as follows:
(1) Added BRF_UPDATE, LASTNRF_UPDATE, and NRF_UPDATE in firstpass.c;
(2) Added the handling for the scenario of
"cpi->common.show_existing_frame == 1" at the encoder;
(3) Added a new reference frame of BWDREF_FRAME;
(4) Have bwd-ref work with upsampled references.

Note that when the experiment of "ext_refs" turned on, this experiment
will be turned off automatically currently.

RD performance in Overall PSNR has been improved, compared against the
VP10 baseline:

lowres: Avg -3.312; BDRate -3.154
derflr: Avg -1.927; BDRate -1.176
midres: Avg -2.149; BDRate -2.001
hdres : Avg -0.567; BDRate -0.588

Change-Id: I4c06ff51cc20194bffbd4d2346e57ba3dcf6b62c

- Covers tx_type: DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST.
- Encoding speed improves ~27% on crowd_run_1080p_12.
- Merge 4x4, 8x8, 16x16 unit tests in one test file.

Change-Id: I058ef5254d068a9523a826480c78ebbdd231824c

Removing redundant calls to memcpy from
build_wedge_inter_predictor_from_buf yields a net 4% encoder speedup
with ext-inter only. The output is identical.

Change-Id: If97d4e323a5c8aca90c84a25a72085e006b05446

Change-Id: Icbdb036d7927b77b84bd78e8348ec8b5be88df08

Around 5% speedup.

Change-Id: I1c552e4e58fbf5637c0b5a97dd2cc4f83a1ca201

This patch always compares the most recent show frames between
the encoder and the decoder to test the mismatch.

Change-Id: I68a91ad0996a598231450debfd616e24992419b5

This is to replace vp10/common/reconinter.c:build_masked_compound.
Functionality is equivalent, but the interface is slightly more
generic.

Total encoder speedup with ext-inter: ~7.5%

Change-Id: Iee18b83ae324ffc9c7f7dc16d4b2b06adb4d4305

Mostly refactoring. Handles signs better though results are
more or less neutral.

Change-Id: If499537c8f8da4f34d104ebfda072eb4c85fb12f

Change-Id: Ie1765f086b10d0f7c4d72961d238dfe0d6056dc2