No bitstream changes. Using MB_MODE_INFO temp variables instead of
MODE_INFO variables. Removing redundant curly braces.

Change-Id: Ib9d1bedfbd8af97ecc722ccf697ea8177bbe287c

lg2 -> log2

Change-Id: I0602ddff49e42c9c40c29c084d04b7592b9f8edf

* changes:
  vp9_dx_iface: s/vp8/vp9/ where possible
  vp[89]_dx_iface: delete unused function
  vp[89]_dx_iface: factorize vp8_mmap_*()

drop 'vp9_' from most static functions unrelated to the codec interface
itself.

Change-Id: I33e76c425bb7373570a57a61662a56d65ab4bdf3

Implements some of the helper functions more efficiently with
lookups rathers than branches. Modeling function is consolidated
to reduce some computations.

Also merged the two enums BLOCK_SIZE_TYPES and BlockSize into
one because there is no need to keep them separate (even though
the semantics are a little different).

No bitstream or output change.

About 0.5% speedup

Change-Id: I7d71a66e8031ddb340744dc493f22976052b8f9f

static mmap_lkup

Change-Id: I24aeac1eca8453e28d58bc06925e58efc228a0a6

s/vp8/vpx/ -> vpx_codec_internal.h / vpx_codec.c

Change-Id: If4192b40206276a761b01d44e334fe15bcb81128

Removing redundant function arguments and curly braces.

Change-Id: I46e02561f33fe02e84a3b19756f03b9504bd6a1b

Change-Id: I78a79fc51c2d7cc3c261f35b569155397f3dc0c4

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

Change-Id: Ic649e9e47d14d6f8cae0c443a425ea533a97ad8d

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

The function encode_block is called only by inter-prediction modes,
hence removing the transform type branching there.

Change-Id: I34a3172e28ce2388835efd0f8781922211bff857

With sf->auto_mv_step_size on it is questionable
whether sf->reduce_first_step_size is worthwhile.
At speed 2 it was not having a big impact.

Even at speed 2 sf->optimize_coefficients = 0 is not
having a big speed imapct so for now I have moved it
down into a higher speed setting.

Change-Id: I8a54de76d486ad37aabce76474889da2768b14c1

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