Removing redundant function arguments and curly braces.

Change-Id: I46e02561f33fe02e84a3b19756f03b9504bd6a1b

Change-Id: Iccd4ab95ea51a6d57ed43947f2fd7ad92e8979cf

correct a doxygen and function reference

Change-Id: I525371d64969aa60c464d0f6a133bc29895d7991

Change-Id: I6bfec4fa50dfc1a953edb1a2aa8e97e6e896bed6

Adding segmentation struct to vp9_seg_common.h. Struct members are from
macroblockd and VP9Common structs. Moving segmentation related constants
and enums to vp9_seg_common.h.

Change-Id: I23fabc33f11a359249f5f80d161daf569d02ec03

Independent horizontal and vertical implementations.

Requires that blocks be built from 4x4 and [xy]_step_q4 == 16

6-10% improvement. CIF improved the least.

Change-Id: I137f5ceae4440adc0960bf88e4453e55a618bcda

Change-Id: Iae84ab945cc9662a0ddd839aa2b9ca59f2ae5423

Enable SSE2 4x4 inverse ADST/DCT transform. The runtime goes from
292 cycles down to 89 cycles. Running bus_cif at 2000 kbps, the
overall runtime of speed 0 goes from 301s to 295s (2% speed-up).

Change-Id: I24098136e7fee7ab2fbf1c11755bdf2ca37f3628

Change-Id: I3ce849452ed4f08527de9565a9914d5ee36170aa

Change-Id: Ia942e56cf322821d42ba06178672791eeee2847e

Change-Id: Ia3d5bd45adf288de11ab59c4728266c93c17e275

Where possible, do the 16 pixel wide filter while doing the horizontal
filtering pass. The same approach can be taken for the mbloop_filter
when that's implemented. Doing so on the vertical pass is a little more
involved, but possible.

Change-Id: I010cb505e623464247ae8f67fa25a0cdac091320

Change-Id: I0543e72fa092eef3976b65e16bb597197c364873

This commit fixed the mis-use of the tx_type for inverse transform
in intra4x4 rate-distortion optimization loop. It improves the
overall coding performance.

Change-Id: I7fe9953175b74890357dbcee33c138573766e980

Change-Id: Ic5257fa8278e9b6297de230e4fd26a1e23ad2bb7

Change-Id: I5dea4570cb05df27a522abf6e7b695998654284a

Change-Id: I2d22577911a37ed7d8c7e08cac20764842267652

Change-Id: I30a597c0cc366e34c9a3e2afe32d70e044f95ca4

Change-Id: Ie0cb732fdcb98616a422c4463bff80642248d136

Adds a speed feature to eliminate full-rd computation if the modeled
rd or rd based on a different parameter in the same mode is already
a lot larger than the best rd yet.

Specifically, only search the sharp and smooth filters if the modeled
rd cost based on the  regular filter is within a certain factor of the
best rd cost so far. Also, skip full-rd computation of non splitmv
inter modes if the modeled rd cost based on pred error is within the
same factor of the best rd cost so far.

Also adds some enhancements in the rd search for splitmv mode to
speed things up by early breakouts. Negligible impact on performance.

Resuts on derfraw300:
psnr:    -0.013% with the splitmv enhancements, -0.24% with the rd
         breakout feature on.
speedup: 6% with splitmv enhancements, 20% with also residual breakout
         (tested on football sequence at 600 Kbps)

Change-Id: I37abc308ea9f110c1679ce649b6a7e73ab1ad5fc

This commit enables 16x16 ADST/DCT forward hybrid transform using SSE2
operations. It reduces the runtime from 5433 cycles to 1621 cycles, at
no compression performance loss.

Change-Id: I75fd7f1984e9e28846af459f810ff0d6ae125230