The strategy to run fast loop filter picking for encoder speed-up
should be revisited at a later stage.

Change-Id: I3b75e06d767cff41be952a42e63b3292f4eab996

Merge sb32x32 and sb64x64 functions; allow for rectangular sizes. Code
gives identical encoder results before and after. There are a few
macros for rectangular block sizes under the sbsegment experiment; this
experiment is not yet functional and should not yet be used.

Change-Id: I71f93b5d2a1596e99a6f01f29c3f0a456694d728

Scale factor for second ref frame wasn't assigned in the code.

Change-Id: I6ef3f3f71bd652a879ad847369c54c744782ea37

Restructure the code to avoid the majority of per-block-size
switches, code duplication, etc. All block types (mb/sb32/sb64)
can be handled by the same code.

Change-Id: I4022718d66e31a15a7074e43f3b98cd0a5124ea7

Removing several commented code blocks, using uint32_t and uint8_t types,
removing redundant code.

Change-Id: Ifc5cc9863897925ea2a7cab4f7309ccf28d80bfe

Change-Id: I40524170334109e2864b06e3c73c8b34e5aa8b0f

Clamp only the motion vectors inferred from neighboring reference
macroblocks. The motion vectors obtained through motion search in
NEWMV mode are constrained during the search process, which allows
a relatively larger referencing region than the inferred mvs.
Hence further clamping the best mv provided by the motion search may
affect the efficacy of NEWMV mode.

Synchronized the decoding process. The decoded mvs in NEWMV modes
should be guaranteed to fit in the effective range. Put a mv range
clamping function there for security purpose.

This improves the coding performance of high motion sequences, e.g.,
derf set:
foreman 0.233%
husky   0.175%
icd     0.135%
mother_daughter 0.337%
pamphlet        0.561%

stdhd set:
blue_sky 0.408%
city     0.455%
also saw sunflower goes down by -0.469%.

Change-Id: I3fcbba669e56dab779857a8126a91b926e899cb5

0.15% quality increase on derf, particularly noticeable on hard clips
at the higher bitrate end.

Change-Id: I02415a96eb9bbc361cba923069625fae71844bc9

* changes:
  Move EOB to per-plane data
  Move qcoeff, dqcoeff from BLOCKD to per-plane data

This is a VP8-only feature (part of profile 3) that is unsupported in
VP9.

Change-Id: I78016eede8d9c834d44d4c517f3e8b8fc2a378b1

Change-Id: If7fa8aea02f26c2c2bb5daf4e65c3e661d7031ca

Change-Id: Ic219e7878428128e4bb1b3995e8151f92b6bd9c3

It is never used.

Change-Id: If7462357c0498ed05af2645f0c272124381d3aab

Change-Id: Icd6b4322841fefcc86f06645e6aaf1ea42fdfabd

It is never used.

Change-Id: Ibae898c52c766aabf65868611060f9c38fb85b35

Cleaning up the code, removing unused vp9_check_segref_inter function and
useless comments.

Change-Id: Ia0e1a3878dc0f9789cba84aeb507a83d9dccd26b

Change-Id: Id0c2e44daa936f1d6fb76469fd1bd72a4d7c19fd

Continue migrating data from BLOCKD/MACROBLOCKD to the per-plane
structures.

Change-Id: Ibbfa68d6da438d32dcbe8df68245ee28b0a2fa2c

Start grouping data per-plane, as part of refactoring to support
additional planes, and chroma planes with other-than 4:2:0
subsampling.

Change-Id: Idb76a0e23ab239180c818025bae1f36f1608bb23

so it is configurable to faciliate testings

Change-Id: I247b62736c3a08ec2934793959d1ae605a05efa3

Adds back special casing B_PRED mode decoding but protected
within the experimental macro.

Change-Id: If98dc8e56b0ecfb1202540c2b7dfdd070cb81ca0

Change-Id: I3a1e9cc5c3ed5be01ff75a84a6c82ec02c75af9c

Fixes an indexing bug. Looks like the bug has been there for a while.

Change-Id: I9fc04b0c30754bcb47366ad94a08112925600c4d