ARNR filtering is now forced to be centered on the ARF
frame and the other two options have been removed.

The other modes of constructing the ARNR frame were
not used and there does not seem to be any good
reason to maintain them.

This is purely an encoder-side change.

Change-Id: Ic772636d23f280752973852b9740083532a49de2

Change-Id: I922d988486b47f413d11a8eeb38532a484d15c80

Remove call to warn() in webmdec.c so that it does not depend on
tools_common.c for compilation.

Change-Id: I2790e837985ce1d84b35f5a20c783d0e6020a9f5

Use the correct buffer to update the coding mode decision for
sub8x8 blocks.

Change-Id: I091ef27d2047eeb8b73ceb7c2c7c45b38ba8c6d5

Change-Id: Idca7c1cd8a12df465c58b6ba064a99404b3b4bce

Use cq_level (which is identical) from VP9_CONFIG instead.

Change-Id: I1aaf2fcef3d2dbd4577f613d27693ff8a68989fd

Change-Id: I2d577d11966fcc5ffaaf0896bf51d18078ad1e9c

The background detection only tracks luma component. This commits
removes the frame buffer pointer retrieval for chroma components.

Change-Id: I098bd2950f5e5829ed5dc2b48568167248da7fad

this is error prone, int64 will suffice for all cases

Change-Id: I94883f93518cfc356ed57b14dc39d79aebccf47d

Change-Id: Ia7d33bc3eb595965bccf4b2231df1e3b2a0243c6

Change-Id: Ibc770df77939a68f9f0d1d78c0edd737b0d398ad

Change-Id: I00bceb9de2009963c91e5102564c05c31ac1ad78

This patch sets up a quad_tree structure (pc_tree) for holding all of
pick_mode_context data we use at any square block size during encoding
or picking modes.  That includes contexts for 2 horizontal and 2 vertical
splits, one none, and pointers to 4 sub pc_tree nodes corresponding
to split.  It also includes a pointer to the current chosen partitioning.

This replaces code that held an index for every level in the pick
modes array including:  sb_index, mb_index,
b_index, ab_index.

These were used as stateful indexes that pointed to the current pick mode
contexts you had at each level stored in the following arrays

array ab4x4_context[][][],
sb8x4_context[][][], sb4x8_context[][][], sb8x8_context[][][],
sb8x16_context[][][], sb16x8_context[][][], mb_context[][], sb32x16[][],
sb16x32[],  sb32_context[], sb32x64_context[], sb64x32_context[],
sb64_context

and the partitioning that had been stored in the following:
b_partitioning, mb_partitioning, sb_partitioning, and sb64_partitioning.

Prior to this patch before doing an encode you had to set the appropriate
index for your block size ( switch statement),  update it ( up to 3
lookups for the index array value) and then make your call into a recursive
function at which point you'd have to call get_context which then
had to do a switch statement based on the blocksize,  and then up to 3
lookups based upon the block size to find the context to use.

With the new code the context for the block size is passed around directly
avoiding the extraneous switch statements and multi dimensional array
look ups that were listed above.   At any level in the search all of the
contexts are local to the pc_tree you are working on (in?).

In addition in most places code that used to call sub functions and
then check if the block size was 4x4 and index was > 0 and return
now don't preferring instead to call the right none function on the inside.



Change-Id: I06e39318269d9af2ce37961b3f95e181b57f5ed9

Change-Id: I86b85b5c11388e84a48f8936330c0d920df5d1f0

There is no need to initialize source/dst frame buffers at frame
level. These will be done at block coding stage. This commit hence
removes the redundant operations.

Change-Id: I11d9f2556058c6205c8e58ed53e31f78622c41b7

Change-Id: Ibf360fe0728e07de448e77e3841c49eb25d3ba2d

This commit compares the current original frame to the previous
original frame at 64x64 block level and decides if the entire
block belongs to background area. If it is in the background area,
skip non-RD partition search and copy the partition types of the
collocated block in the previous frame.

For vidyo1 in the rtc set, this makes the speed -5 coding speed
about 8% faster. The overall compression performance is down by
1.37% for rtc set.

Change-Id: Iccf920562fcc88f21d377fb6a44c547c8689b7ea

This commit added a check of reference frame to make sure that pre
buffer pointers are initialized only when necessary and make them
to 0 if ref frame is intra, hence those buffer should never be used.

Change-Id: Ieb474fcd9feb759f02e2f9c282b7348a8fa31117

Delete code relating to the old VP8_TUNE_SSIM flag
as this code does not currently work and is largely made
redundant in VP9 by the various AQ modes.

Change-Id: I71f28e1f680573d296422254489000678552b17b

Remove duplicate rd_thresh code introduced when vp9_rd_pick_inter_mode_sub8x8()
was forked from vp9_rd_pick_inter_mode_sb().

Change-Id: I3c9b7143d182e1f28b29c16518eaca81dc2ecfed