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The removed variable was once defined for evaluating the use of
distance-weighted compound prediction for the new skip mode, under
the scenario when all reference frames are forward predicted.

Change-Id: I114daa66d911ec8bb8ef220f7c519566037429b1

Use a lookup table to deterimine speed of adaptation in update_cdf.
Tests on 5 keyframes show improvement in BD-rate: consistently more
than -0.2% for google test sets (lowres, midres, hdres).

Change-Id: I6f8927fc6e876e22ebcf2f9340ed62e54cc79d28

1. code the range of eob in a transform block as a single symbol.
2. initialize cdfs directly.
3. initial cdfs are trained by using laplace prob estimates as in base
level coding (CL 38638)

Change-Id: I65c88d6dd0da3381feeec837928ac5bd81be4296

This reverts commit 42659162. 

Enabling OBU by default once again breaks many nightly run tests, so 
temporarily revert this commit to allow time for investigation.

BUG=aomedia:1179

Change-Id: Ifa0d287bc563176dfe3f2005cbde6c7c1ea13809

This fixes MSVC compiler warnings.

Change-Id: Iadd603a4ce2f944f708dff6b23005991cfa3d47a

Change-Id: Ic2d7026b5a859666e813766b34badd4a9ee209b7

This commit fixes the misuse of Stage_range[0] as bitdepth.

Change-Id: I2bf27aff4cc276c42dc834b01e5d20992f6e3da4

This will clear range check failures related to fwd square txfms
when using --enable-coefficient_range_checking.

Change-Id: I5cdc1751b979f612b33d6e00a47277a18792f175

1. Train and init cdfs directly.
2. Use laplace prob estimates in aom_entropy_optimizer to avoid zero
probabilities.

Change-Id: I878fc0a306cbffe3eb51c5b86d5872459b6705c5

Change-Id: Ibce950e8ca61b1518e8b9364939972315febb234

Tested with 720p encoding and av1_cost_coeffs() saves 18% time.
dc_sign_contexts[]'s size is increased to 4*16+1 to avoid crash in
previously reverted CL 4ab9a5dc.

Change-Id: I5e9e7c4d3b41abfb83e0faedd08efa42785f2858

Change-Id: I2fbf8f0b44c48719e597a98c118ec38b3347071a

This reverts commit 4ab9a5dc.

Reason for revert: Breaks encoding/decoding

Change-Id: I9db6bd36688eb182365a31a2976257fb23a2c9c8

BUG=aomedia:1180

Change-Id: I0da8b9f801fdac419a29c4113fa3606cfff8385a

This help MSVC compiler to avoid warnings.

Change-Id: Ibe53cbce7648c453bbea4db91e324bf131fbdd41

Change-Id: I523d9a89493895eb6a7af1df30a39f36ca9f159f

Copy and x, y only convolve functions should be identical to the
original 2d function.

Change-Id: I2b84a1eed775e8d7cba9bc3baa6352227a0326c8

This experiment has been adopted, we can simplify the code
by dropping the associated preprocessor conditionals.

Change-Id: Idf52f49d953b422f7789247df966d238fc34299b

Change-Id: I8e205e5b6310b345065200cfdac23f30badc3caa

Change-Id: I69916bb6390dd9275341d8cd3fae2d8961e1cae3

Tested with 720p encoding and av1_cost_coeffs() saves 18% time.

Change-Id: If6de7c539c4b01a3066bdc267fb375dfe77c2c50

Sub8x8 blocks will not check the extended region in motion field.
For regular block sizes, limit the extended region to be 3 points,
down from 9 points check.

Change-Id: I70f2631aa726ad01ee6bb83fffdf71ef82505888

When either component of a motion vector is above 4096, drop this
motion vector from the motion vector reference frame for later
motion field projection use. The coding performance change is close
to 0 for lowres and midres. This ensures that the motion vector
and reference frame tuple can be efficiently stored within 32 bits.

Change-Id: I9ae60a5caab2d3f49200abb5415532d82986839f

- Make the add_4bytes_obusize experiment part of the obu experiment.
- Remove the add_4bytes_obusize experiment flags.
- Update the encoder, decoder, and tooling sources.

BUG=aomedia:1125

Change-Id: Ia5c443c855e52618257b39c44ca2632703bf83fd

Change-Id: I40232b965ba28b4dcef7ebfe8697679f6b0ffc96

Use the frame ID that indicates the frame display order to identify
whether two different reference frames exist for inter-coded frames.
If there is only one unique reference valid in the reference buffer,
there is no need to signal reference_mode. Instead, the decoder may
identify such scenario and set reference_mode to SINGLE_REFERENCE.

Change-Id: If7d374f5355f153c50b408be5a9956a833c976c3

Adjusst txfm stage ranges so that Cfg tests pass, however
tests with --enable-coefficient-range-checking are still
failing. Those are to be addressed subsequently.

Change-Id: I1b15406a525a78322211e69a0d3a796823bb645e

Check if the global motion undergoes non-translation mode. If that
is the case, do not force a newmv mode into globalmv mode.

This will resolve a mismatch bug of txk_sel.

Change-Id: I589f1619427f02045f8cf49bdea05f348f076236

Make the translation global motion condition on block size
consistent to support 4x16 and 16x4 coding block sizes.

Change-Id: I23a0d04ca6cc08e8f29055c2c37f11b6ca204fec

Part2 of ext-warped-motion experiment was removed.

Change-Id: I1b7aebad1fd7cb60d92c3ce959d5101228addae2

Bakes in DISABLE_VARTX_FOR_CHROMA/DISABLE_SMLTX_FOR_CHROMA_INTRA
macros.
Cleans up code and removes the unwieldy uv_txsize_lookup array.

Change-Id: I9aec8bfcfe218791517ab18e427bc645687916c3

Added optimized convolve functions for single reference case, so that no
separate post rounding is needed and the result is written to the
destination buffer directly. Duplicate code will be cleaned up later.

Change-Id: Iffc0cc6e135b8b6f45a95c314d63368f5aa35f34

Change-Id: I70ebb6ada7ec4a975a8984a2e1ea2fa51664a786

Encoder now writes the binary symbol for show_existing_frame to
indicate the value of reset_decoder_state. The default value now
is set as zero regardless. This enables the bitstream match with
the decoder.

With this patch when fwd-kf is enabled, one additional bit is
signaled at the frame header for show_existing_frame, but without
any coding performance impact.

Change-Id: Ib0137e6a513011c0ac9506837d32e9ad405508af

Reduce the reference motion vector search region over the spatial
neighbor blocks for sub8x8 block sizes, in order to reduce the
worst case context model parsing latency.

Change-Id: I77a2a25483836cc02cf1784c93566fa7cff40fc8

The speed feature FINAL_PASS_TRELLIS_OPT is meant to disable
optimize_b during the transform search but allow it for the
final encode of blocks. There was a previously existing macro
called DISABLE_TRELLISQ_SEARCH, which does the same thing. This
patch merges the functionality so the macro serves only to enable
the speed feature.

Change-Id: Ieee70f97f817998b7ca275f6e4647cc89a330ad6

Change-Id: I4658238c32ed419736cd5db2dd4fc26e9d8e50c5

Only the col transforms are needed since the inverse transform
is designed to do row first and then col. So the row
transform can reuse the same configuration as the row transform of
a square transform of the same size.

Change-Id: I55e0bd6fca2765679be90364a65393e1787f42fe

0.05% drop in performance for 10 bit
0.03% drop in performance for 12 bit

Updated relevant tests:
- Use the fadst4 function from VP9 as the reference.
- Update some max/avg error thresholds

Change-Id: Ic8c5b591eea3309427d2bb42828d44e640f718a1

Enable palette mode for
4x4, 4x8, 8x4, 4x16, 16x4, 8x32, 32x8, 16x64, 64x16

0.8% gain on screen_content keyframe coding.

Change-Id: Ic3c089b74171ace9082a0d3ad9e27c8a27553789