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Preparation for merging EOB_TOKEN. The block_zero value
corresponds to the first EOB_TOKEN: other EOB_TOKEN values will
be merged with non-zero values.

Change-Id: I94036783ee240fa916a79c544ecd716a9c24fa59

Change-Id: I59fd3bd3cc58c3e15dfb6c5e46f303c5d4fd739c

Piecewise linear fit without activity masking on subset3 intra
and objective-1-fast inter, by simple linear regression.

In combination with 79c0f32c "Remove DCT from od_compute_dist_8x8",
this gives a even trade between perceptual and non-perceptual metrics.

av1_daala_dist_30f@2017-01-23T21:32:27.902Z
 -> daala_dist_scale10_30f@2017-01-31T21:52:07.635Z

  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
2.1080 |  2.9645 |  3.4697 |  -2.2086 | 0.2541 | -2.5232 |     2.1645

Piecewise linear-quadratic fit with activity masking, by same method.

The total effect of activity masking and daala-dist changes, with PVQ:

av1_pvq_5f@2017-01-31T01:05:24.219Z
 -> av1_float_pvq_dist_scale_AM_5f_Jan31_crfix@2017-02-02T15:14:40.477Z

   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM |  MS SSIM | CIEDE 2000
22.5041 | 42.6349 | 40.8516 | -10.3510 | -6.8030 | -16.9057 |    21.2613

Change-Id: I9b513509a03aa058dc5c1479c01d62c8fc363a34

This commit renames deblocking_across_tiles to loopfilter_across_tiles, 
to get ready for dering and clpf integration.

Change-Id: Id25b051da9b1e5cb92f35a9619662597462d9537

Change-Id: I32c6b9d8de6d0ae373d22e366c46f4d4c5d6a9b6

Darwin/Linux x86_64 only.

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

Change-Id: I1500c085f26066ac0108017b5155aba0f003427c

Change-Id: Ic8386743b1852ca1074528d04e2adc1d191b091b

Change-Id: I02a019b1c11b3ee4ae32d424cb6ef2f8ae554824

Change-Id: I84ebc5acd57aa1cf735fae9cdb56f225afcb3a63

Change-Id: I6c1717ad82d05ebe22327aec6989af2c0db336e3

These are optimized for EOB_TOKEN being associated
with the current position, not the previous.

CBP tables cover EOB_TOKEN for the the whole block.

This change causes a performance regression until
EOB_TOKEN is merged into the coding scheme.

Change-Id: Ica3a12ed97285cbae204ce3cc1a7e658ebcacc9f

fixes an error under Xcode 8:
array initializer must be an initializer list or string literal
the type deduced from #name was e.g., char[11]

Change-Id: I6fcb29e3229db7650eee106ef6e3986515dc0a07

Change-Id: I20a6ad88a6465b06700b6d692569d7e69c43f489

This function is used by av1_remove_duplicates() to remove
duplicate palette colors.

Change-Id: Ia9943bffa2032bcae92f4a6da86477a8135613f2

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

A few encoder global-motion estimation parameter changes.
lowres: -0.844% (up by 0.08%)

Change-Id: Ib080125803cf56a91ce7d482d6d1445160105010

This experiment implements the idea of the uniform tri-prediction,
which adds a 3rd inter prediction on top of the existing compound
inter bi-prediction. The final predictor for an inter-coded block is
the average of the compound bi-predictor and the third predictor,
which is indentified by a third reference frame and a third motion
vector.

Change-Id: I7ca8435a441960e7d9702fa09614ed7ae9d0ab02

- Wrap functions hidden by CONFIG_MOTION_VAR properly in test code.
- Add some missing ampersands.

Change-Id: Ie7c4e1f14cbacec1c157c7ce110b01350b2ed78e

2nd set of weights can be derived from the 1st.

Insignificant change in BDRate.

Change-Id: I68d6fc256f532d52573583f121dd28fd8913ce3a

Change-Id: I73e3eec0b8fd17c3f9b9f52afc9fac43f3043028

This fixes the following mismatch bugs:
* At the bitstream level, the decoder would not read the delta_qindex
  information for supertx blocks, but the encoder always sent it,
  leading to the encoder and decoder becoming misaligned.
  The delta_qindex information is still required for supertx blocks,
  so change the decoder to read it.
* In addition, the quantizer was not properly adjusted for supertx
  blocks at the decoder. We copy the quantizer setup code from
  non-supertx blocks.

Since this does not change the encoder, it should not have any
quality impact.

Change-Id: I9a0f79c3aa66f2a5a353821e2a6f3b526636e7b4

Change-Id: Ibd4bbceca8218eb94ed0af3c980f8e829a1896de

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

Change-Id: Ia9b483f01cd940c16ba4ea1942b333131398cf37

Change-Id: I8cbb4b9815845072acbe108bf55554beabed76ca

rd_pick_palette_intra_sby() was being passed a dummy 'best_mbmi' in
one case, and later that dummy value could be assigned to 'mbmi'
causing invalid values in 'mbmi'.

This bug was introduced by:
de0c70a2: Refactor rd_pick_intra_sby_mode()

See the referenced bug for a repro case.

BUG=aomedia:337

Change-Id: If6b0aa329f4e4902cd4de8a5e09bc5d9196492a1

BUG=aomedia:313

Change-Id: Ic1a9e20e5fd3f645d3be851d7be759cf4caf7c02

Allow the above combination of experiments to work together
correctly, fixing an encode/decode mismatch bug when they
were all enabled.

This change causes build_masked_compound(_highbd) to only
ever be called if CONFIG_SUPERTX is off, so wrap these functions
in an '#if !CONFIG_SUPERTX' block.

BUG=aomedia:313

Change-Id: Ic3886bc69ba9624b8fcb0a4c2d71fc64d2c0f22c

The issue was that:
- We call av1_setup_pre_planes() when this is not an intra-only frame,
but,
- But, we do motion vector search for any frame other than first frame
Doing both of these only when this is not an intra-only frames makes
logical sense and fixes the crash too.

This also avoids doing motion search for intra-only frames in the first
pass.

Verified that there is no change in compression performance for video,
as well as when forcing all keyframes.

BUG=aomedia:133

Change-Id: I7b18c0568eaa29c6c97f31f226243e5a9dbaecf1

Change-Id: I2a490e144099d7692296992528192c1f11d2c06f

This will make merging EOB_TOKEN easier.

Change-Id: I1789344e9c3bbb329c30287a00aeee3c8a9d60c4

This will make refactoring to support EOB_TOKEN easier.

Change-Id: I8c7e37d090fd142f6b95d997116b84e6e10f3db5

Preparation for merging EOB into multi-symbol encoding.
The more_data flag for the first position is moved
out of the loop, and for remaining positions is
moved in with the previous coefficient. This way it
can always be associated with the previous non-zero
coefficient.

Change-Id: Idfb38058f4c415127b4d9a9beeb8ea2d3a2ec1a2

Zero, one, and two or more coded as one symbol (head).
Remaining tokens coded as a tail symbol.

The pareto CDF distribution is adjusted to cover tokens from
two onwards.

Change-Id: I98b33fab6b9f52690f6ad618ac55e725a97be056

- Added comments for some tables and #defines for clarity.
- Renamed some variables to ensure we use "color_index" instead of
"color" for palette color index related variables.

Change-Id: Ica95a26e0f171a41a3259c8e6b3b891b8cd10151

Set mi_size properly in findSample()

Change-Id: I26bae25bf6300a107108dc5c2b7098e7d7dfa750

This commit makes the daala-ec work in the cb4x4 mode. As compared
to --enable-experimental, --enable-experimental --enable-cb4x4
improves the coding performance by:

lowres 2.6%
midres 1.2%

Change-Id: Ifee6f011c80364492c4a547513d24eb2958b5a56

Now that we have small number of contexts (5), use hash multipliers
(instead of base 11), so that color context hash is within a small
range. This allows us to use a lookup table to get color context
instead of a for loop.

Output bitstreams are bit-exact, so no change in compression.

Change-Id: I8cd8c893048c2fc6b22ccbd56f652d11486e2ee9

This reduces the complexity in a number of ways:
- We need just 3 neighbors instead of 4.
- Possible contexts reduce from 16 to 5.
- On hardware side, getting the contexts for a whole block will be more
parallelizable.

At the same time, compression performance improves very slightly:
- Screen-content set (videos) (Google): BDRate improved by 0.32
- screenshots set (images) (AWCY): PSNR improved by 0.62:
https://arewecompressedyet.com/?job=palette_withTR2%402017-01-27T21%3A30%3A28.890Z&job=palette_noTR2%402017-01-27T21%3A41%3A34.312Z

Change-Id: Ie84ca32f05d55ad481a51c2d3abc579468597189

Cherry-pick Daala e248823a
 Getting rid of the DCT in od_compute_dist_8x8()
Replacing the DCT and frequency weighting by a filter

Change-Id: Icc3a46e5dbb561e4e3b00fa6c2290d54299c05cb

This commit fixes the encoding/decoding mismatch issue when
ext-partition and ext-partition-type are both turned on in cb4x4
mode.

BUG=aomedia:336

Change-Id: I4d6ad5863c9d3bc8e3a41c259b8b39f130164790