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This commit ports a CLPF change from aom/master by manually
cherry-picking:
7560123c

Change-Id: I61eb08862a101df74a6b65ece459833401e81117

Change-Id: I4175070840a6561c1cec5f5a50b64e425f3e2926

Change-Id: I22dacbc2e4933a60ce7151204af9ee253990ca1f

This test checks if there's any basic change to the bitstream or default
encoder by running an encode and checking that the md5 from the decode
doesn't change.

Any change to the default encoder or bitstream should be accompanied by
a change to the md5 in this file.

Change-Id: Ibdd5a1442296fd3e946823ec1f43e8ac4e66dd34

Change-Id: I0dcb0643cf83ee99b63336df851cbca749c11b68

Change-Id: I134d276234b3b8aa7df1ab647892b5d739647f4c

Refactor to streamline the number of profiles needed, in
preparation for the next steps.

NO change in performance.

Change-Id: I753b89299897857f3c250c316b4cdc4fedcb90e8

cherry-picked from aom/master:
2b407394

Change-Id: Ia7b3bfd68e2c31b21f49a429fecc4d0b701b045f

Cherry-picked from aom/master:
e2721a65

Change-Id: I4ade58be91e7bca0cc4f2bed98a43177d7f590a5

Change-Id: Ib5226d4fe3dcf916fe8954c7240966e3a32eed31

Change-Id: I4fea280d72d7e428f2ab0820fd728997d5a903c9

Change-Id: Ia33ce4918d3d40eba331f81909f3f1f0f3ab7a58

When the block has width/height above or equal to 64, use 16x16
block search step for reference motion vector search in the non-
immediate rows and columns.

Change-Id: If11ce97a9328b879f30ef87115086aa0cd985a2f

Use 16x16 block resolution for collocated reference motion vector
search.

Change-Id: I1091b5b178e255eb6cc0b994de360994f7661b79

* changes:
  Remove multi-entropy coder hacks from the treewriter
  Rename rans_dec_lut to rans_lut

Change-Id: I9152f898dfacdf3877ed719f193bb1e0dbee0a1a

Fix the logical OR computation in .mk file. Otherwise, when both
experiments are on, the output of $(filter... will be two 'yes',
which will cause missing library issue.

Change-Id: I53c44e925dc9ea77c7467217c20e4f1bc7e20fc3

* changes:
  Port ANS from aom/master 25aaf40b
  Refactor bitreader and bitwriter wrapper.
  Migrate aom/master ANS test from d311d02d.

Disable rect_tx because we only support 4x4 Walsh-Hadamard transform
in lossless mode.

Fixes failure in ./test_libaom --gtest_filter=*Large*ScreencastQ0/1
Configuration: --enable-experimental --enable-var-tx --enable-rect-tx
 --enable-ref-mv --enable-ext_intra --enable-ext_tx --enable-debug
 --disable-optimizations

Change-Id: Ib6b3494c7dcf7182f1cab9b138388d054851a23d

Change-Id: I319cb856a16ace343359c2aebc449c1d73bdedee

It's used in both encoding and decoding. Matches (historical)
implementation in aom/master.

Change-Id: Ib009b6b6023cfe69e99a0a92f3c70f4416fcdb47

Reconciles the following commits from aom/master to nextgenv2:
- 25aaf40b
- 87073de5

Change-Id: Ideda50a6ec75485cb4fa7437c69f4e58d6a2ca73

Change-Id: I1679da4fb8832133ab1bcb396f4bed4e5448e504

Move code for reading and writing literals and reading trees to use
just the aom_read_bit() and aom_write_bit() function calls.

Change-Id: Id2bced5f0125a5558030a813c51c3d79e5701873
(cherry picked from aom/master commit bc1ac158)

This helps in porting entropy coder changes that happened in aom/master.

Change-Id: If423eeb3da552066cceb88227138ea61d6a20f07
(cherry picked from aom/master commit d311d02d)