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We would expect that these new functions would be slower than
the old masked SAD/SSE functions, as they do additional work
(blending two inputs and comparing to a third, rather than
just comparing two inputs).

This is true for the SAD functions, which are about 50% slower
(depending on block size and bit depth). However, the sub-pixel
SSE functions are comparable to the old speed for the accelerated
special cases (xoffset or yoffset = 0 or 4), and are
between 40-90% faster for the generic case.

Change-Id: I1a296ed8fc9e3edc313a6add516ff76b17cd3e9f

This patch forces DAALA_EC on by default and removes the dkbool coder.

Change-Id: Icd2ff08efd7bf467adf554344111473cb357adf8

Use CONFIG_AV1_DECODER and CONFIG_AV1_ENCODER instead.

Change-Id: I33d83aa6d31067d0db7a972d36927dc49c420f81

Add SSE2 lowbd and SSSE3 highbd versions of the filters
introduced in https://aomedia-review.googlesource.com/c/11962/ .

These filters are equivalent in speed to the SSE2 implementations
of the regular convolve filter. The average time to filter a
64x64 block is:

lowbd C: 52us
lowbd SSE2: 5.6us
highbd C: 53us
highbd SSSE3: 5.8us

Also add a correctness test based on the warp filter tests.

Change-Id: Ia0d81100e8a414bbfc2b5f664d751cf24765299e

Patches https://aomedia-review.googlesource.com/c/11987/
and https://aomedia-review.googlesource.com/c/11988/
replaced the old masked motion search pipeline with
a new one which uses different SAD/SSE functions.
This resulted in a lot of dead code.

This patch removes the now-dead code. Note that this
includes vectorized SAD/SSE functions, which will need
to be rewritten at some point for the new pipeline. It
also includes the masked_compound_variance_* functions
since these turned out not to be used by the new pipeline.

To help with the later addition of vectorized functions, the
masked_sad/variance_test.cc files are kept but are modified
to work with the new functions. The tests are then disabled
until we actually have the vectorized functions.

Change-Id: I61b686abd14bba5280bed94e1be62eb74ea23d89

Libvpx dropped armv6 support sometime after the aom fork.

We don't intend to support this platform, which is likely
too slow in any case. Remove the assembly and intrinsics
optimized routines, their tests, cpu feature detection,
and rtcd specialization for this instruction set extension.

Change-Id: If44ec28e5ddafc6af179c5d1982ac7e81fe54d5e

- Function level improvement:
functions      sse2  avx2  percentage
idct16x16_256  365   226   38%
idct16x16_38   n/a   136   n/a
idct16x16_10   171   110   35%
idct16x16_1     34    26   23%

- Integrated in AV1 for default scan order.

Change-Id: Ieb1a8e730bea9c371ebc0e5f4a748640d8f5e921

Move the definition of several ssse3 only functions into a separate
header file.

BUG=aomedia:500

Change-Id: Idbaedfe23d439b6092d46f0a2aa127efebe4d59b

- Partial inverse DCT unit tests have been enhanced.
- IDCT x86_64 assembly code has been removed.

Change-Id: Ic3bed2c0e70abdfd642a4f74fa969cc672d4795f

Rename '--enable-aom-highbitdepth' to '--enable-highbitdepth'

Change-Id: I1de13c3508c30c552532993419d8ace326142ab6

BUG=aomedia:395

Change-Id: I381f16e66e2540c9bf24727abf8915a3850dcc92

On i7-6700:
- Function level speed improvement: 23%-29%
- User level speed improvement:
   decoder: ~%2-%4.
   encoder: <1%.

Change-Id: I02937a72304c3b356ca41e580352790df391f0a2

Adds a variable length binary code library for
coding various symbols for typical use in headers.

The main codes implemented are:
1. Coding a symbol from an n-ary alphabet using a
quasi-uniform code.
2. A bilevel code for coding symbols from an n-ary
alphabet based on a reference value for the symbol
also taken from the same alphabet.
The code has two steps. If the symbol is close to
the reference a shorter code is used, while if it is
farther away a longer code is used.
3. A finite (terminated) subexponential code that codes
a symbol from an n-ary alphabet using subexp parameter k.
4. A finite (terminated) subexponential code that codes
a symbol from an n-ary alphabet using subexp parameter k,
based on a given reference also taken from the same
alphabet. This code essentially reorders the values
before using the same code as 3.

Also adds corresponding encoder side functions to count
the number of bits used.

These codes will be subsequently used for more efficient
encoding of loop-restoration parameters and global motion
parameters.

Change-Id: I28c82b611925c1ab17f544c48c4b1287930764b7

Same sources as CONFIG_AV1 section. Combined them, and fixed
a comment.

Change-Id: I5273849143c0c92a506deeb9241a761e5ee125d3

This was part of the old ans zero token handling. It has been replaced
by the new ec_multisymbol zero token handling.

Change-Id: I9c1fcb42ac0d214178cf4fbf8755ad68dcbbc11f

Change-Id: If2bb7ab2b16ba44e2d6e43eeb8713aa6c05d9d7c

- For all blocks with width >= 16.
- Add test_count to make the unit tests harder to pass.
- Speed testing on 1080p, 100 frames, 5 Mbps, CPU, i7-6700
  User level time reduction:
   baseline:                  3.68%
   baseline + ext-partition: 36.12%

Change-Id: I78c5d9ca216f0fd91f1a360dca2190b11fd54a08

Change-Id: I3f0af5cf71d17f4d331d846d92728396399f187b

Change-Id: I809eb52e8a632189c49b8ea0a2b5de760cc2a34c

- User level improves 1.33% on i7-6700

Change-Id: I279fc7ec99f4c3500017ed079709227f96e9702e

PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq

The version of PVQ in this commit is adapted from the following
revision of Daala:
https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8

More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf

The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
 av1/common/generic_code.c
 av1/common/generic_code.h
 av1/common/laplace_tables.c
 av1/common/partition.c
 av1/common/partition.h
 av1/common/pvq.c
 av1/common/pvq.h
 av1/common/state.c
 av1/common/state.h
 av1/common/zigzag.h
 av1/common/zigzag16.c
 av1/common/zigzag32.c
 av1/common/zigzag4.c
 av1/common/zigzag64.c
 av1/common/zigzag8.c
 av1/decoder/decint.h
 av1/decoder/generic_decoder.c
 av1/decoder/laplace_decoder.c
 av1/decoder/pvq_decoder.c
 av1/decoder/pvq_decoder.h
 av1/encoder/daala_compat_enc.c
 av1/encoder/encint.h
 av1/encoder/generic_encoder.c
 av1/encoder/laplace_encoder.c
 av1/encoder/pvq_encoder.c
 av1/encoder/pvq_encoder.h

Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.

Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e

PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq

The version of PVQ in this commit is adapted from the following
revision of Daala:
https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8

More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf

The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
 av1/common/generic_code.c
 av1/common/generic_code.h
 av1/common/laplace_tables.c
 av1/common/partition.c
 av1/common/partition.h
 av1/common/pvq.c
 av1/common/pvq.h
 av1/common/state.c
 av1/common/state.h
 av1/common/zigzag.h
 av1/common/zigzag16.c
 av1/common/zigzag32.c
 av1/common/zigzag4.c
 av1/common/zigzag64.c
 av1/common/zigzag8.c
 av1/decoder/decint.h
 av1/decoder/generic_decoder.c
 av1/decoder/laplace_decoder.c
 av1/decoder/pvq_decoder.c
 av1/decoder/pvq_decoder.h
 av1/encoder/daala_compat_enc.c
 av1/encoder/encint.h
 av1/encoder/generic_encoder.c
 av1/encoder/laplace_encoder.c
 av1/encoder/pvq_encoder.c
 av1/encoder/pvq_encoder.h

Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.

Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e

- Change FDCT32x32_2D_AVX2 output parameter to tran_low_t.
- Add unit tests for CONFIG_AOM_HIGHBITDEPTH=1.
- Update TODO notes.
BUG=webm:1323

Change-Id: If4766c919a24231fce886de74658b6dd7a011246

Change-Id: Ida036defe5688894a63007a31aa2dd0b3f0b5d59

Change-Id: I1da08afaa945ca1aaf4bf9f50cf649a7feef2e60

Change-Id: I1da08afaa945ca1aaf4bf9f50cf649a7feef2e60

Change-Id: I7d6394e48e9b6093e5b523387ed250f371ee7fb9

Change-Id: I7d6394e48e9b6093e5b523387ed250f371ee7fb9

When building with --enable-daala_ec, calls to aom_write() and aom_read()
 use the daala entropy coder to write and read bits.
When the probability is exactly 0.5 (128), then raw bits are used.

ntt-short-1:

          MEDIUM (%) HIGH (%)
    PSNR -0.027556  -0.020114
 PSNRHVS -0.027401  -0.020169
    SSIM -0.027587  -0.020151
FASTSSIM -0.027592  -0.020102

subset1:

         RATE (%)  DSNR (dB)
    PSNR 0.03296  -0.00210
 PSNRHVS 0.03537  -0.00281
    SSIM 0.03299  -0.00161
FASTSSIM 0.03458  -0.00111

Change-Id: I48ad8eb40fc895d62d6e241ea8abc02820d573f7

Change-Id: I2849a50163268d58cc5d80aacfec1fd02299ca43

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

Change-Id: If6cf4f37b9319c46d8f90df551cc7295d66ca205

Change-Id: I1241257430f1e08ead1ce0f31db8272b50783102

Manually cherry-picked the following commits:
4b5e462d Upgrade vpx_lpf_{vertical,horizontal}_4 mmx to sse2
3ea537c0 lpf_8_test: remove unneeded function wrapper
110d3778 remove loopfilter 'count' param TODOs
9b44d9d0 split vpx_highbd_lpf_horizontal_16 in two
1b519fb6 split vpx_lpf_horizontal_16 in two
e7a23d70 vpx_highbd_lpf_horizontal_4: remove unused count param
51718573 vpx_highbd_lpf_horizontal_8: remove unused count param
3c1019e4 vpx_highbd_lpf_vertical_4: remove unused count param
72a9f06a vpx_highbd_lpf_vertical_8: remove unused count param
b1e97c6a vpx_lpf_horizontal_4: remove unused count param
 ab25e46pgrade vpx_lpf_{vertical,horizontal}_4 mmx to sse2
bd5a5bb5 vpx_lpf_horizontal_8: remove unused count param
109a47b3 vpx_lpf_vertical_4: remove unused count param
37225744 vpx_lpf_vertical_8: remove unused count param
47dee375 lpf_8_test: add missing dspr2 tests
4fec4a8e lpf_8_test: add missing vpx_lpf_horizontal_4 tests
c3f2c8ad lpf_8_test: add missing vpx_lpf_vertical_4 tests
45a7b5eb lpf_8_test: simplify function wrapper generation

Change-Id: I0e9212497bbf30de37b19cd2d6ea63b505abe06d

1. vp8->aom
2. removed no-effect statements and spaces

Change-Id: I367d05ff9bf1b9f3c71c517c45d8049d9d4236ec

Change-Id: I7f691a0ae27f06ef3d727764829a60a8ffc509eb

Manually cherrypicked from libvpx/master:
1b833d63d9c82270e4ea588541d14e9111c64c79
a4f3751b

Change-Id: I3b82e54a3173ac1458a13f33fd36094fec066f1c

- Unit tests are added for AVX2 SIMD.
- Encoder speed improvement:
  AV1 baseline and EXT_TX, three 1080p sequences at bitrate:
  800 Kbps, 2 Mbps, 6 Mbps, on i7-6700 CPU, average
  user level time reduction: 3.86%.

Change-Id: Ibbd7837ee3a831c6b1e4e471bf6c8d3fa3a19ff4

Reconciles the following commits from aom/master to nextgenv2:
- 25aaf40b
- 87073de5

Change-Id: Ideda50a6ec75485cb4fa7437c69f4e58d6a2ca73

Change-Id: I7f691a0ae27f06ef3d727764829a60a8ffc509eb

That's where it lives in aom/master.

Change-Id: I38f405827d9c2d0b06ef5f3bfd7cadc35d5991ef