high-latency, cpu-used=0:

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-2.0680 | -0.9789 | -0.7987 |  -0.7414 | -1.6257 | -0.8961 |    -2.0220

Low-latency, cpu-used=0:

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-3.9175 | -2.1697 | -2.5191 |  -2.4382 | -3.4157 | -2.5755 |    -3.6688

Low-latency, cpu-used=4:

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-7.5800 | -4.3697 | -4.3494 |  -5.4149 | -7.8724 | -6.0894 |    -7.3975

Change-Id: Ib784ed088fa537cf47d87477954c2d5047b3c42c

Change-Id: Ida4a10fae54591f8f5b740739ab71a2650303958

Change-Id: Iea2c2ab6f606d6bfc98684dc0b7d32b0a940713f

Add av1_set_txb_context to perform context setting.
This will make the code cleaner and facilitate
lv_map experiment implementation

Change-Id: Iea7e1e8ff6820e2c9cf72961adaa58346a7eca75

Use correct tranform size context.

BUG=aomedia:408

Change-Id: I4781a18b1f66c82a5f7aab54f11fbbd6772a9c79

Change-Id: I0a067e89d544f72d7ce08b0e4cccb77c4c3c9497

Change-Id: Iee9bc41a19d754e234a083f4416b938950f719a5

Avoids having to forward declare AV1_COMMON which was causing problems.

Change-Id: Iab90e6b5683a737feeec0574e31cf4bd3e02a776

Change-Id: If3a4c7e6aee747afd675e0233560f6e721c10f79

Currently, mbmi->ref_mv_idx can be set to a nonzero value
on the encoder side if mbmi->mode is one of NEARMV, NEWMV,
NEAR_NEARMV, or NEW_NEWMV. But it can only be nonzero on the
decoder side if the mode is NEARMV or NEWMV. Hence av1_nmv_ctx
has previously been disabled when ext-inter is enabled, to
prevent a mismatch due to this.

This patch changes the encoder behaviour to match the decoder
behaviour.

Change-Id: Icfe41fb72e76731ae373fe8c6065f5e003f6414f

Offset the transform block size with respect to TX_4X4 when
counting the cat6 extra bit size. This accounts for the potential
use of 2x2 transform block size in cb4x4.

BUG=aomedia:405

Change-Id: Ia15ac123e4f31dc66455c3aa6925ae5e754de493

Chroma now has a list of strenghts too, with the superblock signalling
shared between luma and chroma.

low-latency, cpu=4:

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
-0.0114 | -1.4626 | -1.4745 |  -0.0423 | 0.0430 | -0.0001 |    -0.7416

Change-Id: I389c77f1d80020f810e45f8502c656ad9d397c8c

Use a simpler warped motion estimation scheme that uses a 2d
least squares problem, where the underlying assumption
applied is that the motion vector computed at the center
of the current block using the warp model is exactly the same
as the motion vector transmitted for the block.

The main motivation is to reduce the complexity of the
estimation process.

Coding efficiency drop is about +0.25% on lowres:
-1.152% (from -1.396%).

Also, removes code for non-approximate division and bakes
approximate divison in.

Change-Id: Ie4ad8e32593b09f7e1920c70b0b92545236ddc54

Change-Id: Ifda6ddec1e0c9aff29d531c5bf6411c0072c7b0e

all around usage of strtol/strtoul

ported from libvpx:
08b8b6bb8 examples: quiet -Wshorten-64-to-32 warnings

Change-Id: If907c89f107a068987aa71ddd93cee9a7389e4cd

Frankly I don't know what this was exactly doing in Daala
but it cannot be supported in AV1 because
state.sb_q_sacaling is not defined.

Change-Id: I75cb9080aa2a4af544b436b07ddcb9c27b3d25c4

Change-Id: I581bdb5edacd92fd40b28327fcd5bfb062dc9b5b

Change-Id: I6bedc3a1a40e551ce4b3989382b7706a589c08f2

Change-Id: Icbf9a2f31eb7f6c385266a0236d2ef266f43e409

Change-Id: I1cc0d4b54263264fd1ffffb4cf33833ea841acde

Change-Id: I551eda906c96fac77125e10e6f71e9a6edca5baf

Adds the superres scale numerator, width, and height to the AV1_COMMON
struct for later use in encoding and decoding. This value will also be
added to the uncompressed frame header.

A #define statement is also added to represent the denominator - 16.

Change-Id: I4acec39ef3c67fa9f7118dac28daec3a2d734ed5

Change-Id: Ibd1f256dad4508194c6f23b84b6b6b6d67b9f92a

Change-Id: I2f4a5c836905b089b91b211368bf3a0dea682b75

Change-Id: Iebc74024475c7cb88650b65df9f23b1a5e70021c

od_dering() modifies the input signal

Change-Id: I886400037ec4b438742fcbadf1eecda8819f9b8b

This will allow us decode motion mode without knowing motion vectors
in the neighborhood.
Improves the performance by 0.3% (1.1->1.4)

Change-Id: Ie18ee2b02b1d2f89615bc8fa423beb1f9bd9a678

We now signal joint strengths and use a greedy algorithm for the search.

low-latency, cpu-used=4:

ll4-cdef@2017-03-22T03:42:10.815Z -> ll4-cdef-newsearch-var-header-newlambda-refine4@2017-03-22T15:56:46.471Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0792 |  0.3551 |  0.4393 |  -0.0108 | -0.1338 | -0.0141 |     0.1452

Change-Id: I619ae1c7c7d7ec04fe993cabc5773b07c3f5b201

The feature is implemented in the following two functions.
av1_write_txb_probs
av1_read_txb_probs

Change-Id: I0b646e17ec54d7a10a77a6853439217091455af1

Change-Id: I08e4bbbef788079e27410359e5e0b1ad8542f72a

Change-Id: Id70fbfbca6c53a0aa15ff5606bb972e7412b3ed0

This will provide better indication of abnormal code flow.

Change-Id: I7e6cdcf77f13c709137e6524c94b0911cd5216ed

This is for backward updating probability model of lv_map

Change-Id: I0e943e271e3cb8a90c33263b4d62db90bf2e89b0

Using static array will increase program size

Change-Id: Ic5378a78f1c54a8ce9ebc41fa2f1b3e3f91d1f1d

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

Change-Id: I07869d1bf46f0c3a918e317445e10774e5d1657c

Change-Id: Id29bce3dd36225e9ac88e5ab1ad93c368a3708d9

Delta quant doesn't make sense if the intent is to encode
the frame in lossless mode.

BUG=aomedia:393

Change-Id: Ic26e30267dd3a061d7ee5e980b6950366f06b32f

Change-Id: I4d43d33725a5a0e6fdfa1168d1397cb122366b19

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

Change-Id: I6c246c0a5399e34e0eeeadc98de21cbf5b850af6

- Simplify arithmetic
- Combine branches
- When nesting branches do more predictable branches first

About 2.6% faster decodes at very high token rates.

Change-Id: I2802fd47a78c144e4d89c59288590fc4b095a504