Updates the common convoloution code to support blocks larger than
16x16, and rectangular blocks. This uncovered a bug in the SSSE3
filtering routines due to the order of application of saturation.
This commit fixes that bug, adjusts the unit test to bias its
random values towards the extremes, and adds a test to ensure that
all filters conform to the expected pairwise addition structure.

Change-Id: I81f69668b1de0de5a8ed43f0643845641525c8f0

Change-Id: I83aa188d414922db19cccb210c4001c02d5a404c

Removed skip_recon_sb(). Cleanup code so that we could combine
decode_sb and decode_mb later.

Change-Id: I24d1dd5283e2565072838a03c344938b88bfd35c

Change-Id: I655305c9e22bdd9abc893d3c40d4bc6616aa1d35

Also moving frame size check into read_frame_size function.

Change-Id: Ib098d83bd50081bfc2941c87aea0dc58cb39583e

Change-Id: Id268ccaf1aefee6a3ed3e31486d4370f1c25e8cb

List of moved functions: vp9_decode_uniform, vp9_decode_term_subexp,
vo9_inv_recenter_nonneg, vp9_decode_unsigned_max.

Change-Id: Ib518beb90b791690c5c93de17b8bdbf560033b41

alt_extra_bits is now only used in a local context so
remove it from the twopass_rc structure.

Change-Id: I5bbf0a3dba9712a3da45760f7bb865243705b53e

that are related to using reconstructed pixel for selecting reference
motion vectors.

Change-Id: I048dfae39ca7385e344b57d46347ecc6e753e1bb

It is unused.

Change-Id: Ied3269ffacf9b6303bc9d85f996384c3575ef812

Change-Id: Idb0d11e3ae9afabe667a9f327bf4d3aa84f63649

Using filter_level/16 instead.

Change-Id: I73a7e83a785d6aa6f9b5d22cf66e22f0a39ed078

About 11% overall encoder speedup with the sbsegment experiment enabled.

Change-Id: Iffb1bdba6932d9f11a6c791cda8697ccf9327183

Change-Id: I41b3f5932ecd6256e8207369ad19aa81e7987be1

Adds RD integration for 32x16, 16x32, 64x32 and 32x64 rectangular blocks.
Derf almost +0.6%, HD a little over +1.0%, STDHD +1.3%.

Change-Id: Id651fdb6a655fdbb5c47009757e63317acfb88a5

Enable recursive partition information coding from SB64X64 down to
MB16X16. The bit-stream syntax is now supporting rectangular block
sizes. It starts from SB64X64 and recursively describes the partition
type of the current block. If the partition type is PARTITION_NONE,
the block is coded as a single unit; if it is PARTITION_HORZ or
PARTITION_VERT, the block is segmented into two independently coded
rectangular units, with no further partition needed; otherwise, the
block is segmented into 4 square blocks. i.e., PARTITION_SPLIT case,
each can be potentially further partitioned.

Forward adaptive probability modeling is used for the partition
information coding, conditioned on the current block size.

Change-Id: I499365fb547839d555498e3bcc0387d8a3587d87

Also a little bit of code cleanup: replacing pbi->common with cm,
pbi->mb with xd.

Change-Id: I2f70a005704a2833d644dfaafc4cd354e6e8532b

Merge "Slightly hackish workaround to support rectangles in directional intra predictors." into experimental