This is to exclude coding CFL for block sizes where it is normatively
not allowed.

Reuse the alternate CDFs from the --disable-cfl path.

This yields some improvement on subset1:
   PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
-0.0113 | -0.2630 | -0.2138 |   0.0021 | -0.0110 | -0.0157 |    -0.0511

BUG=aomedia:1182

Change-Id: I1e5f23ef7f2debcf8edce788bfa63ec95db4a679

Change-Id: I32b2ce4839c359891841385467cf532b1ebe4a59

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

Change-Id: I3e08eec385c40360e3934fa4f66f7c671e860517

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

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

- 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: I70ebb6ada7ec4a975a8984a2e1ea2fa51664a786

As loopfilter is not needed for intrabc, clean up related code.

Change-Id: If89d4969a7795cd8993e6add8fd03ef1296699ef

Clean up: clean up unused entropy related arrays
Bug-fixes: resolve compiling errors when it is enabled with
entropy_stats and ext_skip

Change-Id: I2893e1b5c09e847fb4677f6e62709464208b76f8

1. Use separate contexts for transforms of size 32x32 and above.
2. Initialize cdf directly

Change-Id: I3373143788e81b2547d99e420e591892ef2641a2

all_builds.py has been more or less replaced by Jenkins.

author_first_release.sh is unused.

ftfy.sh has been obviated by having the whole tree clang-format clean.

Cherry picked from libvpx 920ba82

Change-Id: I1981fa3c483728575a03589360ab69cdb8cb4762

Change-Id: Ifa3b55d9c8022a66b6c0b1a15d3e8943cd7c69e6

Update the OBU parser to shift OBU header values before
masking instead of the opposite, and rename constants for
clarity.

Change-Id: Iea91fad7e825697573f255f450a3605b65c657f7

Change-Id: I2ad279d27fb34c9c6bcee6029a40377541f066a7

Change-Id: I72a01937abc3ad5a1ddd5f5ef1ea79e2320343ad

This is a work in progress. So far this tool supports only
reading of OBU headers with and without extensions. OBU
payload parsing will be added in future commits.

Change-Id: Ie4c184ad4ae8e536e00015e9bde6a7cde8dada28

Multisymbol BR coding is simplified as follows.
1. Remove computation of level counts by using a template of size 8;
2. Context is derived by using a template of size 3.
3. lps and eob probabilities are trained.
4. Share contexts between TX_16X16 and above.

The number of probability values used in BR coding are reduced from 1152 to 378.

Change-Id: I0419127e871f9e566c2489aa4b1825c5364aec5a

Add counters and newly trained initial probabilities for coefficient
coding.

Change-Id: I2647303c639b60018b8caacfefce77be26cae92c

This experiment has been abandonned for AV1.

Change-Id: I83fb51a17d67df6713308665d2626c232376d25a

Change-Id: I42ffbcfed9ef308a2e547d04ccc76670eb405e44

Change-Id: Icbd008d5e973aa5038e857af460e55964fe36b13

Change-Id: I424ff643e6f46216934c96fa9d34a27c46b3e7f2

Change-Id: Ia90ad41050efeec31a92541e9dfc6c46ef75362c

Change-Id: Ibe313aa31ea593d121a1b6078ef8f7849cb58092

Change-Id: I4ad02b76df285526ba6c3b884e6a1335369ba2e9

Change-Id: Ia07c54a0a57d810fea2598eaf4ff2034daa441af

Change-Id: Iaed205ac520e6f4dbec8b406f15598f4f2fbd3f9

Use 4x2 processing unit.
Reduce # of modes from 6 to 5.

Change-Id: I3c12e18084636de0e279c9102a8b212342faf4c7

The probability training tool generates all CDF_PROB_TOP table if
the counts are all zero. Although it means such cases are never
used in actual encoding, in rd cost pre-calculation, we still
sometimes run into such cases and the token cost calcualtion
function cannot handle all-CDF_PROB_TOP cdfs (Will trigger assertion
when debug mode is on).

Change-Id: I259620e210fea0f6e1f7848724fa006fa06da226

This matches the code in read_partition in decodeframe.c and almost
gets rid of the last usage of the "partition_prob" tables which can
now be deleted.

Change-Id: Ibe0e947007d593d8e5f4ab10a38cd920856e566d

This experiment has been abandonned for AV1.

Change-Id: I3501181d096873dec35ea58e4b55530fa76e683f

Include a few RDO fixes that properly account for the extra flag
cost at the right place. Also entropy coding of the flag is made
contexted on tx_size and based on cdf framework.

Change-Id: I52f98ace7e253ccc08917a4a7b517515d1d58a98

This experiment has been cleared by Tapas.

Also, fix a couple of hash signatures in the test while we are at it.

Change-Id: I1658bcb07913cf8bd47cfffadd729e16d5c55fc3

Change-Id: If0b45997af5c0b209b48db9bd78ed6be204acb7c

This experiment has been abandonned for AV1.

Change-Id: I18cf1354df928a0614a1e58b718cd96ee7999925

Development of this experiment will be deferred to AV2.

Change-Id: I3c4615a21b59508500bed8aab0a5c54413b4f284

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

Change-Id: I02ed47186bbc32400ee9bfadda17659d859c0ef7

This name better reflects the functionality of the mode.

Change-Id: Idc2372e7c7b226f70f63fa4f272a88cb4d857089

Change-Id: Icbedc16b01adf9b48f0f357ec89143462865d54e