Generate txb_ctx which contains both txb_skip_ctx and dc_ctx
directly

Change-Id: I5058b72e0b6431a9daf0536925c71da590cf7aeb

ec_multisymbol+ext_partition_types:
base_ext_types@2017-03-15T18:24:38.012Z -> 8565_3_ext_types@2017-03-17T18:29:48.794Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0346 | -0.0343 | -0.0341 |  -0.0345 | -0.0345 | -0.0344 |    -0.0345

ec_multisymbol+ec_adapt+ext_partition_types:
base_adapt_ext_types@2017-03-15T18:27:31.704Z -> 8565_3_adapt_ext_types@2017-03-17T18:30:01.108Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0422 | -0.0420 |     N/A |  -0.0425 | -0.0423 | -0.0423 |    -0.0420

Change-Id: Ia40f118f0faf546be13e02ec9ed584dd38529a59

Bring the following libvpx commits to aom:
e446ffd Cache optimizations in optimize_b()
50d3629 Repack vp9_token_state

Saves 24600 bytes of stack in the default configuration.

Change-Id: If9d6506cf3fe1c34ab639dedb3ef62a996293781

Change-Id: I097ddaac3e19084542663e142cde5c115ef09099

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: Iec2b4796286821e786c424d5bedee0ae2de53af8

Required to build for arm targets that lack media (armv6) support.

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: I5c53e413a2eaa4f753ff4163be185ba9255f6661

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: Ib1c5e04134911fd7ccdcb014b53a06e856368a5d

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: I1e2cfafb537af65f0393e764026567729f2667ee

- Add function add_gas_asm_library() to handle conversion of asm
  sources and creation of custom dependencies.
- Uses add_asm_library() to create the library build.
- Add aom_dsp_common_neon_intrinsics target for the neon intrinsics.

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: Ifd99fbd69998a79613e0f5b61003a47973a804bc

The previous limit was <=1080p, which was sufficient to keep RAM
usage below 3GB for the 8 bit path, but turns out to be insufficient
for the 10 bit path.

Change-Id: I7a19261928a4e1a71f5f297125651113a2465d3d

Enabling SEPARATE_GLOBAL_MOTION will remove the ability for
a block that uses zeromv with global motion to pick warped_causal
or obmc_causal as the motion mode. When this is enabled there is:

0.05% drop on lowres for global + warped enabled
0.15% drop on midres for global + warped enabled

0.12% drop on lowres with global + motion var enabled
0.07% drop on midres with global + motion var enabled
No performance change for global, warped, or motion var individually.

Change-Id: Idbfb8dd7a93da14902438504b06a08e5212e48cb

BUG=aomedia:396

Change-Id: I1b7f6dddb06eac9e341518a95a0d71465e613e9e

This fix was motivated by a code generation bug in g++ on arm, but it
seems a good idea generally to disable these unit tests if we're not
compiling with optimisations, since the code tested is only intended
to be used as inlined functions, and while it's possible to compile
without optimisations, the tests become somewhat half-hearted since
there are workarounds when there's no inlining (such as for
instrinsics requiring immediate values), so the tests would partly
test code that wont be used anyway.

BUG=aomedia:377

Change-Id: I9a0515c96a7ed2f4636820dfc03fbb92323ca8ee

Change-Id: I8134c0ac4bd18478b266a0058e00bc6b1e6f8e9e

BUG=aomedia:376

Change-Id: Ief69f220ec5b6cf15443f872ad2f9a63336c185d

* Dering and clpf were merged into a single pass.
* 32x32 and 128x128 filter block sizes for clpf were removed.
* RDO for dering and clpf merged and improved:
  - "0" no longer required to be in the strength selection
  - Dering strength can now be 0, 1 or 2 bits per block

              LL    HL
PSNR:       -0.04 -0.01
PSNR HVS:   -0.27 -0.18
SSIM:       -0.15 +0.01
CIEDE 2000: -0.11 -0.03
APSNR:      -0.03 -0.00
MS SSIM:    -0.18 -0.11

Change-Id: I9f002a16ad218eab6007f90f1f176232443495f0

'bits' can be (less than or) equal to sizeof(av1_cat6_prob).

BUG=aomedia:399

Change-Id: I20ceb6fa3b61dfcc59e28605fe4f90d8bfaacc51

Change-Id: I6c5a843df7de0e711db27ccc5cfbe9fde8d6bae4

This function go through each transform block in the
prediction block and call av1_write_coeffs_txb to
pack coefficients into the bitstream

Change-Id: I6dedebef6cf8957f9173241a7de60e9936bc0be8

Replaces the int64 and int32 divisions in least-squares and
gamma or delta computation with a mechanism that decomposes
the divisor D such that 1/D = y * 2^-k where y is obtained
from a lookup table indexed by 8 highest bits of the difference
D - 2^floor(log2(D)). The main complexity is now only from
computing this decomposition, which is essentially equivalent
to finding floor(log2(D)) (position of highest
bit in a 64-bit integer).

Also includes an out of memory bug fix and some cleanups.

Change-Id: I9247fdff5f6b4191175d4b4656357bfff626f02c

This is used at cmake generation time via a command line like this:
$ cmake path/to/aom -DCMAKE_TOOLCHAIN_FILE=path/to/aom/build/cmake/toolchain/armv7-ios.cmake

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: Iadacc32c43bc23e0f670b88e3c1563c44319945c

- Stop acting as if Yasm is the only assembler.
- Kill generation and report error when yasm is not found for x86
  and x86_64 (remove the generic fallback).
- Use $AOM_AS_FLAGS to pass assembler specific flags.
- Add include guard in aom_optimization.cmake.

BUG=https://bugs.chromium.org/p/aomedia/issues/detail?id=76

Change-Id: Ic68d6c81071c24a8ceb6806d04ab8959be97d876

This draft version only pass compiling check, it's not working yet.

The following goal is to use new coding system when doing bitstream
packing but keep old coding system in RD loop.

Change-Id: I224a1581d1cc5c67d73e71558fb77d9faf9c2470

This commit implements support for twopass encoding using the xiphrc
experimental rate control system. Most of the code and logic comes
from the theora project encoder.

Currently support is limited to the bitrate targeting mode of the
rate control system and while it does visibly improve quality and does
bring rate closer to the target than the one pass mode there's still
tuning and bug fixing to be done.

Change-Id: Iae0d65bbce5ddfbb95b436e2238a43d6100a23b3

Doing tokenize in the last step of RD loop and then doing packing
tokens in bitstream packing phase is hard for debugging.

Therefore, we create a frame-level buffer to store the txfm coeffs
from the reconstruction in RD loop and then in bitstream packing
phase, we can code the txfm coeffs directly.

Change-Id: I999470eef6e038317a91585df2bdfc20aca3573e

Fixes some rd-debug mismatches coding cat6 tokens with tx size < 32x32.
For these tokens the high extrabits are elided during tokenization and
detokenization, but the rd cost was computed with the old tables from
VP9 where these high extrabits are always coded.

Change-Id: I4a9a6ea822ff821e1932c351d43a57bdb4d6d466

Change-Id: Ib1777433c10e3b64f939c533c12a89dfc839bc6a

The offset of neighbors is communicated to av1_make_inter_predictors
so as to use the correct mi in gm warping

Change-Id: I471bbdf2112ed678969492b11730f15d9527eb7e

Update the first PARTITION_PLOFFSET (4) contexts with the four classic
partitions. The extended partitions are only codable above 8x8, but
there are PARTITION_PLOFFSET (4) contexts for dropping below 8x8.

Change-Id: Ib3291dded6dc24103222e8f470504c20e29adb88

Change-Id: Icd7528d1ec8e117205e5e35ad9a11cfa83b08253

These are no longer used in probability updates.

Change-Id: Idf5037f769d43972434b5ecbff3550b3f97be21a

Change-Id: I51f31083988d7d5c574067c1a3aa98b7949adcee

The function is_rect_tx previously was only defined when
both ext-tx and rect-tx are enabled together. This function
needs to be defined when rect-tx is enabled alone to fix
failing asserts.

Change-Id: Ic8153a55b768cb49caac07d6aeaee109d63410a9

Frame Super-Resolution is an experiment currently under development.
This commit just adds an experimental flag for it.

The goal of the experiment is to compress a downsampled version of a
frame instead of the full resolution one when bandwidth is limited. The
decoder will need to upsample and filter the frame it recieves after
decoding. It is thought that this will result in a visually superior
result in low bandwidth scenarios.

Change-Id: Ia8af8692cffd133db3838693fd85ded2442b078c

In the last position, No-EOB values and zero are all not
possible.

AWCY, objective-1-fast: -0.08% all metrics
AWCY, screen content:

PSNR YCbCr:    -0.42%    -0.42%    -0.43%
PSNRHVS:       -0.40%
SSIM:          -0.41%
MSSSIM:        -0.41%
CIEDE2000:     -0.42%

Change-Id: Iad012abfd2a48a2c9ff27512f92b27235a5a8a4a

Modify av1_coef_cost to reflect that EOB values are sent
with each non-zero coefficient, and modify chroma weight
to preserve original chroma balance.

AWCY, objective-1-fast, new_token+ec_adapt vs ec_multisymbol:

PSNR YCbCr:     -0.43%      -0.52%      -0.58%
PSNRHVS:        -0.81%
SSIM:           -0.73%
MSSSIM:         -0.93%
CIEDE2000:      -0.36%

This change:

PSNR YCbCr:     -0.15%      0.83%      0.77%
PSNRHVS:        -0.24%
SSIM:           -0.23%
MSSSIM:         -0.24%
CIEDE2000:       0.24%

Change-Id: I7f2dd9f3cd24bb64eb4131cba94dda466b9691b0

The initial CDF for each frame is stored in
the frame context. CDFs for actual coding are
stored in the tile structures, and these are
what get adapted. The initial CDF is replaced
by an average CDF derived from these tile CDFs.
This is carried forward to future frames when
backward adaptation is on.

CDFs are no longer set from the 8 bit probabilities
in backwards adaptation.

For now, 8 bit probabilities are maintained for
use in the encoder and for symbols which do not
have a CDF.

Change-Id: I106b30510bfad1fa57d077f7702acc1864378a09

Change-Id: I50267aa39d4d2857b48cbea0cbc8a7608489ebd7

One codepath originally skipped a function which forks between
gm prediction and regular inter prediction. This change fixes this
for both high bit depth and regular bit depth.

Change-Id: I741d67a7c89eb6eb0cd35c02219739dc3ddb3841

Change-Id: Ief9581c8060132f20ca81f4c1be15e2772b6c9eb