This commit fixes a transform size enc/dec mismatch issue in the
key frame coding.

Change-Id: I0c4f40464a367b33dd91ace84506650b1aec2873

1) Added an initialization of rd_tx_select_threshs[].
2) Made updating transform size counts to be consistent

Change-Id: Iaa9d6c6be825b0364c9d61a9802873d01356815c

Change-Id: I3a26baf8b2f945fea4f1aea156e60fa79f620f86

Also some unused data structures/references removed.

Change-Id: I295809e887173543e794250cb60ddaf1475ffd24

As intra coded blocks are always decoded using decode_sb_intra(), this
commmit removed the code no longer in use.

Change-Id: I09f14fa9cdc875656e8fbe245f72c8fd83b9e31e

The changing in intra coding to base on transform block, i.e. pred->
txfm->quant->dequant-itxfm->recon, made all blocks within a prediction
unit behave consistently, there is no longer a need to handle blocks
differently based on the position within a predicitn block. So this
commit simplifies the decision of transform type to be based on
prediction mode only.

Change-Id: If96cb72386f2e9186126ace88afa35ef085b6c96

This commit fixed a uninitialized value use in the intra 4x4/8x4/4x8
rate-distortion loop.

Change-Id: I5c25b3536b59e4f5fbb23cf85baf93b2ccec7d72

datatype is optional for the instruction but clang refuses it.
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0489c/CIHIJIHC.html

It is still required when using an immediate.
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0489c/CIHGGEEB.html

Change-Id: I0fae956c8c0fa3f97578ce80abea247f7fc88705

This commit refactors the iterative motion search for compound
inter-inter mode, to make it support all partition types including
4x4/4x8/8x4 block sizes.

Change-Id: I5f1212b0f307377291763e45c6bdc9693b5f04c8

Removal from under configure flag.
A bit  renaming

Change-Id: I2213229dfe852001dfec16b149f47c52ce88f3aa

Move 4x4/4x8/8x4 partition coding out of experimental list.

This commit fixed the unit test failure issues. It also resolved
the merge conflicts between 4x4 block level partition and iterative
motion search for comp_inter_inter.

Change-Id: I898671f0631f5ddc4f5cc68d4c62ead7de9c5a58

Added SSE2 version of variance functions for super blocks.

Change-Id: Ibeaae8771ca21c99d41dd74067574a51e97b412d

Reverts to using 128 bit LUT for the coef models rather than 48
to ease hardware implementation.

Also incorporates some cleanups including removing various
hooks to support different lookup tables based on block_type and
ref_type.

Change-Id: I54100c120cca07a2ebd3a7776bc4630fa6a153f6

This commit changed the encoding and decoding of intra blocks to be
based on transform block. In each prediction block, the intra coding
iterates thorough each transform block based on raster scan order.

This commit also fixed a bug in D135 prediction code.

TODO next:
The RD mode/txfm_size selection should take this into account when
computing RD values.

Change-Id: I6d1be2faa4c4948a52e830b6a9a84a6b2b6850f6

Change-Id: I1b86744fa247233c8df031b3f4b87b212c8dd094

Merge this experiment so that it is under a speed feature
flag not a configuration flag.

Change-Id: I536f7f125a4ff5149bb3a64f791e835c324535fd

This commit allows the rate-distortion optimization of intra coding
capable of supporting 8x4 and 4x8 partition settings.

It enables the entropy coding of intra modes in key frame using a
unified contextual probability model conditioned on its above/left
prediction modes.

Coding performance:
derf 0.464%

Change-Id: Ieed055084e11fcb64d5d5faeb0e706d30268ba18

No longer used.

Change-Id: Id28c9247cebba183c6fa786dff96824ae100132c

Merges the experiment.

Change-Id: I4eb19af6de6df6aa3a96a2e82f231d47ed9b3ae9

No longer used.

Change-Id: I171c5fa33a7600ad45b9466af23a46ccbdfe0480

No longer used.

Change-Id: Ica5166f7117f4693dffdf7633dcfc1b263103d0d

Uses more aggrerssive interpolation to reduce storage for the
model tables by almost more than half. Only 48 lists of probs are
stored (as opposed to 128 before), corresponding to ONE_NODE
probabilities of:
1,
3, 7, 11, ..., 115, 119,
127, 135, ..., 247, 255.

Besides, only 1 table is used as opposed to 2 before. So the overall
memory needed for the tables is just 48 * 8 = 384 bytes.

The table currently used is based on a new Pareto distribution with
heavier tail than a generalized Gaussian - which improves results on
derf by about 0.1% over a single table Generaized Gaussian.

Results overall on derfraw300 is -0.14%.

Change-Id: I19bd03559cbf5894a9f8594b8023dcc3e546f6bd

Passing prev_mi is not needed.

Change-Id: I6453bb47514ddafd555864d190ecf6d1a6bdc136

Change-Id: Ib07d1e707a87cec98ea3a1779fccca078d8c4310

Change-Id: I4f1a4eca6794cda78d00512196caacd5567e2dcc

Cleans up the experiment. Actually uses reduced counts for backward
updates, and reduced number of probabilities in the context.

No change in bitstream when the experiment is on.

Between expt on and off:
derfraw300 is down only -0.062% (which is better than when expts
were run previously).

Change-Id: I55285a049a0c22810bdb42914212ab5a4f8521b5