- Setup function vp10_highbd_fht4x4_sse4_1 for highbd SSE4.1
  intrinsics optimization.
- Wrote SSE4.1 functions: load_buffer_4x4(), write_buffer_4x4(),
  and fdct4x4_sse4_1().
- Used logic right shift to avoid coeff memory write/read.
- Turned on vp10_highbd_fht4x4_sse4_1 for DCT_DCT mode only.
- Improved overall encoding performance >2.3% for 50 frames
  sequence, park_joy_1080p_12.y4m, in which, --input-bit-depth=12,
  --bit-depth=12, 50 frames.
- Unit test passed.

Change-Id: Idd6dc6e472cbbf235f0ade4f66fbe859a860a004

Not getting good results for this feature, will try again
when transforms are frozen.

Change-Id: Id12396786cb9369ad34d0bd845f7beba3a037726

This buffered ANS coder supports coding the symbols in forward (decode)
order. Rather than windowing or growing the buffer, right now this
coder merely asserts that the buffer will never overflow.

This approach should allow ANS to be used as a drop in replacement for
other entropy coders rather than requiring complicated reversal logic
throughout the codebase.

Change-Id: I6689271233d0e22fea94c51950415dad5af96598

Change-Id: I1d5624fb2f34f87a55613036851034ec7c2d0b76

This commit enables the dynamic motion vector predictor for NEWMV
mode. It allows the codec to select the best motion vector predictor
in a rate-distortion optimization framework for motion vector
residual coding. The compression performance is improved:
lowres  0.14%
midres  0.27%
hdres   0.24%

Change-Id: I6a601c74eb6cb0b71a613336d40363359f2edecd

Simple refactoring to 2 dimensional arrays, in preparation for 128
wide superblocks.

Change-Id: I40d447bd9fbd4f755534ea3cc82fc8f4676cea07

This is in preparation of increasing the superblock size.

Change-Id: I9197e397399fbe8aec1178a45ea0337dd90412d7

Change-Id: I91d280a64d1da77be31004ea91d08d1a70529e42

No performance change observed from borg tests.

Change-Id: I20c232c5dde8cfc84452a4c7185389bd8b812ffd

Change-Id: I52c209a5db1b4a6525c04b70291a08ab5a68c6fe

Merge inverse_transform_block_inter inverse_transform_block_intra
to inverse_transform_block

Change-Id: I0f561830e639e3bf8d831c28a7c784cb0c4c8b09

Change-Id: I71da102550aa7d81961e5f10c71058d5fa8dc6c4

This is a cosmetic patch that removes a great deal of conditional
compilation around CONFIG_VAR_TX from the partition search function.

Change-Id: I9dcef9d4fe6847b793c77bdf565a5cacbdfacd59

Change-Id: I131c4d1216cd156e520b8a91c4438c2d3c6602cb

Change-Id: Id52744e140585c08d047fb395b75ac9318a0b4c3

Change-Id: I6e5d8cff869c7415a924f845c9e6ccaabe2b7a9b

Change-Id: Ib60821487710f6cf06aaa8ddcbdd5487ba1cbe4f

This commit fixes the computation of rate_nocoef for situation when
rate_y is uninitialized at INT_MAX for  x->skip is true.

Change-Id: If3dde4e4ee16667f4408067d3bb3084f916272f1

PSNR test
        lowres  hdres
lowbd   -0.013  0.067
highbd  -0.044  0.039

Change-Id: Iefdb1e966bd004b2027456778185b675e8fb9b81

For experiments to improve compression efficiency of entropy coding.

Change-Id: Idf30dc554bd7eea3a79d21d18515c3e6b8f64b26

Change-Id: I2df3b6ecd35406ee05c2aa4e49be779e73e1bdc6

In preparation for adding more 1D variants with ADST/FlipADST/etc.

BDRATE actually improves by 0.21% on lowres.

Change-Id: I2fa4720c69fe001fa666119a284dfc6b17fffab2