Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the
dominant direction from the context is used to encode. Various decoder
changes are needed to support decoding of B_CONTEXT_PRED in conjunction
with hybrid transforms since the scan order and tokenization depends on
the actual direction of prediction obtained from the context. Currently
the traditional directional modes are used in conjunction with the
B_CONTEXT_PRED, which also seems to provide the best results.

The gains are small - in the 0.1% range.

Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2

Also split superblock handling code out of decode_macroblock() into
a new function decode_superblock(), for easier readability.

Derf +0.05%, HD +0.2%, STDHD +0.1%. We can likely get further gains
by allowing to select mb_skip_coeff for a subset of the complete SB
or something along those lines, because although this change allows
coding smaller transforms for bigger predictors, it increases the
overhead of coding EOBs to skip the parts where the residual is
near-zero, and thus the overall gain is not as high as we'd expect.

Change-Id: I552ce1286487267f504e3090b683e15515791efa

Change-Id: Ib39ad47a7d188f3b45416937b7eeb28c3e79b74c

there are still a couple type of warning left, which are related to
double constants assigned to float type. As those would be addressed
by the conversion of transforms into integer version. This commit
has left those un-dealt with.

Change-Id: I48fd9b489c0c27ad6b543f4177423419f929f2bb

Change-Id: I7cd21b9f1e69f4e0b3338bfe27b3c67e4b47de58

Update vpx_scale from current code in master, run style transform, fix
lint warnings.

Change-Id: I47eadeb5b6881d448ea3728537f9b8a5b5aac78e

Change-Id: Ic084c475844b24092a433ab88138cf58af3abbe4

Most of these were picked up by jenkins in the commit that changed
the vp8 namespace to vp9 in common/.

Change-Id: I5cbd56ffc753b92ef805133cda6acc1713a13878

For non-static functions, change the prefix to vp9_. For static functions,
remove the prefix. Also fix some comments, remove unused code or unused
function prototypes.

Change-Id: I1f8be05362f66060fe421c3d4c9a906fdf835de5

This change encompasses VP8_PTR, VP8_COMP, VP8D_COMP, VP8_COMMON,
VP8Decompressor and VP8Common.

Change-Id: I514ef4ad4e682370f36d656af1c09ee20da216ad

Change-Id: Ic5a5f60e1ff9d9ccae4174160d36529466eeb509

Most of these were picked up in the previous commit (prefix change from
vp8_ to vp9_), but I'm pushing this separately so that it's easier to
review.

Change-Id: I91e959895778b8632d7d33375523df8a7568a490

Change-Id: Ie2e3652591b010ded10c216501ce24fd95d0aec5

Change-Id: Ie8ba934a757acec1c80ac37ab9307c9a2783254e

Change-Id: I77bc38b53428ff3e6456b5bc3516418892a58c1e

Also merge some duplicate code related to the superblock experiment
in the RD loop.

Change-Id: Ic93f1d4d1ed81220fd7ecf6e65da2821a215b2de

Preparation for project restructuring.
Added vp9_ prefix on some function names that have global scope.
Added static declaration on some that dont.

Change-Id: If072f78b4300e8c17cfeed82c5d17b59946dcc5e

Change-Id: I0c689fb44e9e91539c450d26672d7a1d92e92900

Coding and costing of mv reference signal.

Issues in updating MV ref with COMPANDED_MVREF_THRESH
to be resolved. Ideally the MV precision should be defined based
on absolute MV magnitude not as now the MV ref magnitude.

Update to mv counts moved into bitstream.c because otherwise
if the motion reference is changed at the last minute the encoder
and decoder get out of step in terms of the counts used to update
entropy probs.

Code working on a few test clips but no results yet re benefit vs
signaling cost and no tuning of red loop to test lower cost alternatives
based on the available reference values.

Patch 3. Added check to make sure we don't pick a reference
that would give rise to an uncodeable / out of range residual.

Patch 6-7: Attempt to rebase. OK to submit but best to leave flag off for now.

Patch 9. Remove print no longer needed.

Change-Id: I1938c2ffe41afe6d3cf6ccc0cb2c5d404809a712

Should fix B_PRED-related encoder/decoder mismatches.

Change-Id: I16f808dffd19094e02e8562ba58cc1016155ce93

Change-Id: I87d571008c73f0a8514e0a864405aadb82fd1bc0

There is a macro DEFAULT_INTERP_FILTER defined in encoder/onyx_if.c that
is set as EIGHTTAP for now - so SWITCHABLE is not really used. Ideally,
this should be SWITCHABLE but that would make the encoder quite a bit slower.
We will change the default filter to SWITCHABLE once we find a faster way to
search for switchable filters.

Change-Id: Iee91832cdc07e6e14108d9b543130fdd12fc9874

Change-Id: I0d306b0062be59bc785b65882691c956c8b5e7c8

Removes the old mv encoding code.

Change-Id: I1026d48cc5ac15ccb776f98463e929254c3dc7da

Change-Id: I99f1982b30a630a9a070a8326d83b34a33cba14c

For splitmv, where partitioning is 8x16, 16x8 or 8x8, this patch
uses the 8x8 transform (instead of the 4x4) if txfm_mode is
ALLOW_8X8 or ALLOW_16X16. For TX_MODE_SELECT, splitmv can indicate
which of the 2 transform sizes (4x4 or 8x8) it wants to use.

Gains (with hybridtx4x4/8x8/16x16 and tx_select experiments
enabled) on derf: +0.9%, HD: +0.4%, STD/HD: +0.8% (SSIM or overall
PSNR, both metrics show similar improvements).

Change-Id: Ide954b000b415548ed92a7ac78e24f36e60fcf06

Change-Id: Idd2722a538423b451e1e3495f89a7141480493d6

Allows B_VL_PRED & B_LD_PRED modes to be used for all blocks
within a MB in B_PRED mode. These modes were temporarily
disabled with super-block coding.

Change-Id: I973b9bdb82c3da5f12d7cc963162a28805f25303

Separates the logic on transform type selection previously spread out
over a number of files into a separate function. Currently the tx_type
field in b_mode_info is not used, but still left in there to eventually
use for signaling the transform type in the bitstream.

Also, now for tx_type = DCT_DCT, the regular integer DCT is used, as
opposed to the floating point DCT used in conjuction with hybrid
transform.

Results change somewhat due to the transform change, but are within
reasonable limits. The hd/std-hd sets are slightly up, while derf/yt
are slightly down.

Change-Id: I5776840c2239ca2da31ca6cfd7fd1148dc5f9e0f

Change-Id: If9fc2df4051ccfb8d804dae9d1be08d12d0f81ce

remove useless space after address-of operator.

Change-Id: I1fb9e82e8d6cf87558fbd454fb5c0f87599ca2ab

Packs the bitstream with each mb's residual following its mode/mv
information.

TODO: There are still a few fields that should be packed into partition
0 but are included in partition 1, due to them being serialized from
write_kfmodes/pack_inter_mode_mvs, which execute after the first
partition is finalized. These need to be separated out into a separate
function, similar to mb_mode_mv_init() in decodemv.c.

Change-Id: I43a46c363601ab36954d07ebe498760e1e2e3af4

This reinstates reverted commit 2113a831

Change-Id: I9a9af13497d1e58d4f467e3e083fddf06b1b786c

This way a caller doesn't need to implement the logic for which (and how
many) tokens to write out to stuff one macroblock worth of EOBs. Make
the actual function implementations static, since they are now only used
in tokenize.c; also do some minor stylistic changes so it follows the
style guide a little more closely; use PLANE_TYPE where appropriate,
remove old (stale) frame_type function arguments; hardcode plane type
where only a single one is possible (2nd order DC or U/V EOB stuffing);
support stuffing 8x8/4x4 transform EOBs with no 2nd order DC.

Change-Id: Ia448e251d19a4e3182eddeb9edd034bd7dc16fa3

Also make some minor stylistic changes to bring the code closer to
the style guide. Remove distinction between inter and intra transform
functions, since both do exactly the same thing except for the check
against SPLITMV for the second-order transform. Remove some commented
out debug code. Remove 8x8/16x16 transform code in encode_inter16x16y(),
since the first-pass only uses 4x4 anyway.

Change-Id: Ife54816ff759825b9141f95dc2ba43c253c14dba

This includes trellis optimization, forward/inverse transform,
quantization, tokenization and stuffing functions.

Change-Id: Ibd34132e1bf0cd667671a57b3f25b3d361b9bf8a

This reverts commit 2113a831

Code clean up - removed rtcd

Change-Id: Id963ecf53c370b1d99484ef18d6befeed7e0c748

Entropy coding takes care of this anyway, and this causes changes to
the txfm size assigned to skip blocks, which can affect the loopfilter
output, thus causing encoder/decoding mismatches.

Change-Id: I591a8d8a4758a507986b751a9f83e6d76e406998

Change-Id: Iecb282fc89f9b5145ef31c5eda294ad42bc32a5d