Use 4x4 block coding for UV components arbitrarily in I4X4_PRED and
SPLITMV coding modes. This is a temporary solution to enable
bit-stream support for recursive partition down to 4x4 block size.
Will separate the functionalities of 4x4 block coding rate-distortion
out from those of superblocks.

Change-Id: I03dc15d5897014f175f3f2c91e9b266091d56797

Use common function to fetch/assign sb_index in rd loop, bit-stream
writing and reading.

Change-Id: I1d8a214a57ed9cbcd026040436ef33e5e39d65b7

Change-Id: Ic11dc052fb641687c015e1bbc37181b9babcd43e

mdcounts seems no longer used.

Change-Id: Idd8162e8acfa3f5be7a18767156cc79ccbc2bdee

In current code, motion vectors got from single prediction mode are used
in compound prediction mode directly. These motion vectors may not give
accurate prediction since they are searched independently. In this patch,
we took Pascal's suggestion, and did joint motion search in compound
prediction mode to find better motion vectors in this situation.
Test results:
Overall PSNR: 0.570%(derf), 0.918%(stdhd);
SSIM: 0.572%(derf), 1.009%(stdhd);

The encoder is a little slower. This can be improved since some c
code is used in motion search.

Change-Id: Ib30c9240f6c56c9b070867b4ca89412a76d9f3c6

This commit enables the search for the optimal superblock
partition types in the recursion form. The intention is to
make the optimization process more concise and ready to
support partition down to 4x4 block size next.

Change-Id: Iae279a67df3a7cc372553c84c775bc4d2f3e4336

Use value already computed value to save of calls

Change-Id: I42836698e59c116416ccd75395bebdd11dd609fb

Increase the allocated size of the token array to support 4:4:4.

Change-Id: I7766a7bedc74b819dcc1f3622d634f340fd3186d

The previous code was somewhat vestigial for 16x16 MI units, but was
incorrect when called with chroma blocks larger than 4x4 because the
block index caused a reference to a non-existent BMI. This patch uses
the same MV for all chroma subblocks in SPLITMV mode, which is
suboptimal for non-4:2:0 subsamplings, but as SPLITMV may be removed
in the near future, will use this as a stop gap.

Change-Id: I3211cee5ccf1cfb426e5eef5353b0ce5bb92b4cd

Fixes some debugging code to be able to write out frames with
chroma other than 4:2:0.

Change-Id: I5ee3d29e584db1f52d2de344db249e927eff10b7

Make framebuffer allocations according to the chroma subsamping
factors in use. A bit is placed in the raw part of the frame header for
each of the two subsampling factors. This will be moved in a future
commit to make them part of the TBD feature set bits, probably only set
on keyframes, etc.

Change-Id: I59ed38d3a3c0d4af3c7c277617de28d04a001853

Change-Id: If4063184f7b37dc011ec6a7a3e75260f4251e984

The chroma planes are not used during the first pass encode,
but the vp9_encode_sb() function was operating on them anyway.
This was causing the use of uninitialized memory.

Change-Id: I5ebafcd3d5e34ed91a8336dad159b573995a939f

Use a single method for calculating the transform size of
non-luma planes.

Change-Id: I16ebd10e7944d7b9075ab79d15e6a5b5f9bab775

We don't have two loopfilter types anymore.

Change-Id: I53c0137361342c7d00887ad03be3490f0dfa3532

Change-Id: I49527ff8dd8bef1074c18a964fed2a575f0b118a

Change-Id: I4374b5af40ee9082ddf7956a9756a15ad9ad5436

Also doing a little bit of cleanup inside vp9_mbgraph.c.

Change-Id: I9c6711b73810969d2d8fdb19f8edf9ed6e49d1e3

Change-Id: Ia85b987c935d545920dcae5a6f44136b1a08a008

Change-Id: I22f1066eb0022c8d75f65a78435ee4ffecdfe0c9

Update and buffer left/above partition information context per 8x8
block. This allows to further enable recursive partition down to
4x4 block size, and hence deprecating I4X4_PRED and SPLITMV.

This commit also fixes a context buffer swap/restore issue in 32x32
partition type search. This gives 0.1% performance gain for derf/yt.
Will refactor the superblock partition type search into recursion
form.

Change-Id: Ib61975aca5f12b78d8018481d7fa1393d085689b

Makes the temporary storage of the filtered data agnostic to
the number of planes and how they're subsampled.

Change-Id: I12f352cd69a47ebe1ac622af30db29b49becb7f4

Also removing BOOL_CODER and using vp9_writer instead.

Change-Id: I31d1ec661872f7eb1fe869607b6ed0ebfbb03e01

Change-Id: I3a4f456035628a9397bdc57c19cdb03439ab1ed3

Change-Id: If57e360c187a475fc90edb8c7170f498efcb31a5

Change-Id: I81c19a8f19cfb5c7183609656ade833d72feb500

Delete code under the CONFIG_CODE_ZEROGROUP flag.

Change-Id: I5fe6c7b42a5da9b73118e33594301da4129f320a

Change-Id: I71311a14f8d7f48508b250f25d1d0914c6a1ac72

Adding static swap_yv12 function to vp9_firstpass.c.

Change-Id: I7da9caab9720498db4a74c627901bf37816ed06c

Delete code under the CONFIG_COMP_INTERINTRA_PRED
flag.

Change-Id: I3d1079cf46305c08f7e11d738596ea112e7b547f

Clean out code under CONFIG_ENABLE_6TAP flag.

Change-Id: Ic45b624081181027d6ba24d55dd644c3197f9830

Clean out code relating to newbintramode.

Change-Id: Ie91f4f156cdf60ce0da8ca407c1c9cb00c7d0705

Skip Q values between the q.0 mode and a real q of
2.0 as these are not valuable from an RD perspective.

Change-Id: I110c4858c57f97315953f4d88a2596d4764360df

Macro ab4x4 contains experiments for recursive partition down to
4x4 block size.

Change-Id: Ic727842fa98a4df9fd51e0025a545dc76a5c76c1

Use unified function pointers to variance_.

Change-Id: I78891bede56e73306851808d96f09dc0d3d8074e

Code previously set up the pointers by scaling by MI_UV_SIZE, which
is 4:2:0 only.

Change-Id: Ic13a92895cff018ec1345736746ed84cb31e6e31

Previous code assumed 4:2:0 subsampling.

Change-Id: Ie0814e45d099e84d0ded880b62e7bc98f85b7f0c

Pull sb8x8 out of experimental list. verified via borg run tests.
Fixed unit test failures.

Change-Id: I12a4bbd17395930580c048ab68becad1ffe46e76

Resolved the unit test failure on tile independence when sb8x8
enabled.

Change-Id: I23ca86c88170e49ca160e8e897d913905e6080ce

There is only one instance of these structures, no need for them
to be allocated separately on the heap.

Change-Id: I1333cc92d06bbe21be643c2b2f0e3936f0264cac