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Change-Id: Id2537c8826e07ad6605aaa9858ba6d797bcd23a5

Use a round flag in ConvolveParams to indicate if the destination buffer
has the result rounded by FILTER_BITS or not.
This CL is part of the goal of reducing interpolation rounding error in
compound prediction mode.

Change-Id: I49e522a89a67a771f5a6e7fbbc609e97923aecb6

Change-Id: I7c992c9aae895aebcfb5c147cb179cf665c0ac10

Change-Id: I0ebd6951d2b42869ae872b33f63a07db03e99c62

This uses a segmentation mask (which is temporarily computed arbitrarily)
to blend predictors in compound prediction. The mask will be computed
using a color segmentation in a followup patch.
Change-Id: I2d24cf27a8589211f8a70779a5be2d61746406b9

No need of special handle on sub8x8 block sizes.

Change-Id: I8487cd68eda0882fe50550af3998dc941ec13b21

Relative to previous ext-inter:
lowres: -0.177%
     or -0.029% (with USE_RECT_INTERINTRA = 0)

* When predicting interintra modes, the previous code did not provide
  the intra predictor with the correct context during rdopt. Add an
  explicit 'ctx' parameter to the relevant functions, to provide this
  context.
  This fixes a nondeterminism bug, which was causing test failures in
  *EncoderThreadTest*

* For rectangular blocks, build_intra_predictors_for_interintra needs
  to overwrite part of the context buffer in order to set up the
  correct context for intra prediction. We now restore the original
  contents afterwards.

* Add a flag to enable/disable rectangular interintra prediction;
  disabling improves encoding speed but reduces BDRATE improvement.

Change-Id: I7458c036c7f94df9ab1ba0c7efa79aeaa7e17118

No change in performance

Change-Id: Ie105a7baf6a2c2258d3ef117e727957e4393f51b

Change-Id: I2047adc4c147201ce0ce3c533fe2861cbff1002c

This CL will cause
0.122% PSNR drop on lowres dataset
0.059% PSNR drop on midres dataset

However, it will facilitate hardware implementation.

Change-Id: I0a0713acacbfd571509a721337711c021915dd3c

Change-Id: I8980df4512de605aaa6a67c1f05e544f69a12e96

                  BDRate
ext_interp  lowres -0.001%
dual_filter lowres  0.001%

Change-Id: Ic24165d554c300eaa0188ee8cb88d320b74125aa

Covering commits 1c263e03 and 79d8a07d from AOM codebase

Change-Id: I6400e5f99bbb2ef6584ef232d465e520230c06e0

Handle the sub8x8 chroma component at the unit of 2x2/4x2/2x4 level
and use the motion vector inherited from the luma component. This
improves the coding performance:

lowres 0.4%
midres 0.25%
hdres  0.15%

Change-Id: I34dff4218cfa3e5d55e7ed0341f36f4719389f7e

- Const correctness
- Refactoring
- Make variables local when possible etc
- Remove -Wcast-qual to allow explicitly casting away const.

Cherry-picked from aomedia/master: c27fcccc
And then a number of more const correctness changes to make sure other
experiments build OK.

Change-Id: I77c18d99d21218fbdc9b186d7ed3792dc401a0a0

To get ready for pulling AV1 to nextgenv2
Replace the experimental flag by MOTION_VAR. Rename major variables.

Change-Id: If6cf4f37b9319c46d8f90df551cc7295d66ca205

This CL will cause
0.122% PSNR drop on lowres dataset
0.059% PSNR drop on midres dataset

However, it will facilitate hardware implementation.

Change-Id: I0a0713acacbfd571509a721337711c021915dd3c

this matches style guidelines and stabilizes successive runs of
clang-format across the tree. remaining types should be address in
successive commits.

Change-Id: I6ad3f69cf0a22cb9a9b895b272195f891f71170f

Change-Id: I2b2b70e756b7eb9611b7b33b7d5f19b3b30e0a50

Cherry-Picked the following commits:
0defd8f2 Changed "WebM" to "AOMedia" & "webm" to "aomedia"
54e66767 Replace "VPx" by "AVx"
5082a369 Change "Vpx" to "Avx"
7df44f17 Replace "Vp9" w/ "Av1"
967f722f Remove kVp9CodecId
828f30ce Change "Vp8" to "AOM"
030b5ffc AUTHORS regenerated
2524caee Add ref-mv experimental flag
016762be Change copyright notice to AOMedia form
81e55269 Replace vp9 w/ av1
9b94565b Add missing files
fa8ca9f2 Change "vp9" to "av1"
ec838b76  Convert "vp8" to "aom"
80edfa01 Change "VP9" to "AV1"
d1a11fb9 Change "vp8" to "aom"
7b582513 Point to WebM test data
dd1a5c8d Replace "VP8" with "AOM"
ff00fc0f Change "VPX" to "AOM"
01dee0bb Change "vp10" to "av1" in source code
cebe6f0c Convert "vpx" to "aom"
17b05679 rename vp10*.mk to av1_*.mk
fe5f8a8a rename files vp10_* to av1_*

Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419

Manually cherry-picked commits:
ceef0583 libvpx->libaom part2
3d26d916 libvpx -> libaom
cfea7dd7 vp10/ -> av1/
3a8eff73 Fix a build issue for a test
bf4202ed Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc

Change-Id: I01d8241eba3ccaf4d06c00a51df2d17c126f6f9d

Manually cherry-picked the following changes:
8c8d16de vp9 -> vpx in names
75b57d39 VP9_ -> VPX_ in function names
761a7088 VP9_INTERP_EXTEND -> VPX_INTERP_EXTEND
4273a52c VP9->VPX in border pixel macros
03568c31 VP9_FRAME_MARKER -> VPX_FRAME_MARKER
2334f51d VP9->VPX in fdct function names

Change-Id: Icc18dbf4b416dd0fa21033b3e19ab8a47c893508

These are needed for the warping function in the global motion
experiment.

Change-Id: Iaab176d0c0b90f6b938e2bac48b24c07e87e3cd9

Use vpx_blend_a64_hmask and vpx_blend_a64_vmask to speed up
computing the obmc predictor. Clean up calc_target_weighted_pred.

Encoder speedup: 1.3%
Decoder speedup: 6.5%

Change-Id: I0c774fe53d22399e92a10d1daf3af0010d88d2c5

Use vpx_blend_a64_hmask and vpx_blend_a64_vmask to speed up
computing the supertx predictor.

Decoder speedup of up to 4% has been observed.

Change-Id: I255a5ba4cc24f78dc905d25b6e2f7fbafac13253

- Made source buffers pointers to const.
- Renamed vpx_blend_mask6b to vpx_blend_a64_mask. This is more
  indicative that the function does alpha blending. The 6, or 6b
  suffix was misleading, as the max mask value (64) does not fit into
  6 bits.
- Added VPX_BLEND_* macros to use when needing to blend scalars.
- Use VPX_BLEND_A256 in combine_interintra to be more explicit about
  the operation being done.
- Added versions of vpx_blend_a64_* which take 1D horizontal/vertical
  masks directly and apply them to all rows/columns
  (vpx_blend_a64_hmask and vpx_blend_a64_vmask). The SSE4.1 optimzied
  horizontal version now falls back on the 2D version. This can be
  improved upon if it show up high enough in a profile.
- All vpx_blend_a64_* functions now support block sizes down to 1x1
  (ie: a single pixel). This is for usage convenience. The SSE4.1
  optimized versions fall back on the C implementation if
  w <= 2 or h <= 2. This can again be improved if it becomes hot code.

Change-Id: I13ab3835146ffafe3e1d74d8e9cf64a5abe4144d

This reinstates commit efda2831
without the tests and with fixes for 32 bit x86 builds.

Change-Id: I34be4fe1e8a67686d26ba256fd7efe0eb6a569e8

Change-Id: I9860376c98aa3b25f5bf86ed13d4a7631fa6b153

This reverts commit efda2831.

This commit causes segmentation fault at SSE2/SumSquares2DTest.RandomValues/0

Change-Id: I171937e4daf6f15323e8206418773deb03bd8c53

We can optimize wedge partition selection by pre-computing the
residuals of the 2 underlying predictors, and then blend these
to compute the sse of the compound predictor, without actually
having to compute and subtract the compound predictor.

Similarly we can pre-compute a proxy array which we can use to
cheaply check which mask sign would have lower sse.

Details are in wedge_utils.c.

Mathematically these are equivalence transformations, but due to the
finite precision the encoder output will be perturbed, though on
average this should make 0% difference.

ext-inter gains about ~4.5% speedup.

Change-Id: Ib2657c3209ae161b4090b58b4b6c392641bf2792

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

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

Change-Id: If499537c8f8da4f34d104ebfda072eb4c85fb12f

This fixes the crash in encoder when configure with both  highbitdepth
and dual-filter.

Change-Id: Ie06cc528094f4b31b7fc0ba75e7b15cae031d707

This commit makes the sub8x8 chroma component inter predictor
operate at 2x2 block level. This allows one to use the actual motion
vector associated with each individal pixel block. It improves the
compression performance

lowres  0.40%
midres  0.25%
hdres   0.15%

Change-Id: Ia40e07cc7fde463dbf660018850e024932136c4f

If a reference block is coded with sub8x8 block size, and if it
has sub-pixel level motion vectors, its prediction filter type
should be used as context information.

The coding performance gains of dual filter type coding scheme are
lowres  0.57%
hdres   0.88%

Change-Id: I68b98f2518d02f11c29d0256aeb45b2580fe5cac

Increases number of wedges for smaller block and removes
wedge coding mode for blocks larger than 32x32.

Also adds various other enhancements for subsequent experimentation,
including adding provision for multiple smoothing functions
(though one is used currently), adds a speed feature that decides
the sign for interinter wedges using a fast mechanism, and refactors
wedge representations.

lowres: -2.651% BDRATE

Most of the gain is due to increase in codebook size for 8x8 - 16x16.

Change-Id: I50669f558c8d0d45e5a6f70aca4385a185b58b5b

Weighted single motion search is implemented for obmc predictor.
When NEWMV mode is used, to determine the MV for the current block,
we run weighted motion search to compare the weighted prediction
with (source - weighted prediction using neighbors' MVs), in which
the distortion is the actual prediction error of obmc prediction.

Coding gain: 0.404/0.425/0.366 for lowres/midres/hdres
Speed impact: +14% encoding time
              (obmc w/o mv search 13%-> obmc w/ mv search 27%)

Change-Id: Id7ad3fc6ba295b23d9c53c8a16a4ac1677ad835c

Improves speed by about 10-15% by combining y-only rd with
modeling function in a better way.
Also, coding efficiency improves by about 0.1%

lowres: -1.805% BDRATE with ext-inter

Change-Id: I6ef1f8942ec6806252f3fcf749ae4f30dffe42b1

This commit fixes the compiler error in high bit-depth inter
predictor when dual filter type experiment is turned on.

Change-Id: I404a76a246477f2fcffc38a3275007d5dfe229cd