Merge various super_block_yrd and super_block_uvrd versions into one
common function that works for all sizes. Make transform size selection
size-agnostic also. This fixes a slight bug in the intra UV superblock
code where it used the wrong transform size for txsz > 8x8, and stores
the txsz selection for superblocks properly (instead of forgetting it).
Lastly, it removes the trellis search that was done for 16x16 intra
predictors, since trellis is relatively expensive and should thus only
be done after RD mode selection.

Gives basically identical results on derf (+0.009%).

Change-Id: If4485c6f0a0fe4038b3172f7a238477c35a6f8d3

The unified dequantization, inverse transform, and adding functions
support rectangular block sizes. Also separate the operations on
luma and chroma components, in the consideration of the txfm_size
for uv components in rectangular block sizes.

Change-Id: I2a13246b2a9086b37d575d346070990d854cc110

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

Change-Id: I3b75e06d767cff41be952a42e63b3292f4eab996

Unify the sb32x32 and sb64x64 decoding units, which also allow for
other rectangular block sizes.

Change-Id: Ia5187ab2af56f98c3f99272bdf4dbcabe798ad5d

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

Change-Id: I8fe25a905717a3cd2da5f87ba0403357536183cf

Modified for option "--enable-gprof".

Change-Id: I07f78f28c1b789c0b3e9e7db3561463551ae5460

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

Change-Id: I6ef3f3f71bd652a879ad847369c54c744782ea37

Renaming vp9_ht_dequant_idct_add* functions to vp9_dequant_iht_add*.

Change-Id: Ie427b322b1cc7c8f39d1155f5df91dedfbd944af

Renaming Y1dequant to y_dequant, UVdequant to uv_dequant, QIndex to qindex.

Change-Id: I1c356e5f886deb3f8807dc212de9799b55b09d58

Adding ALLOWED_REFS_PER_FRAME constant instead of hard coded number 3.

Change-Id: I46146aa837896936f920c748c7d4aa4c27f026e4

Lower case variable names, less code.

Change-Id: I1abc8f592ad2343ab5c76fe2d16262741a4a894a

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