This commit enables a background detection approach for adaptive
quantizer control. It combines the cyclic refresh pattern and the
background information to determine the segment id for adaptive
quantizer selection, prior to the non-RD mode decision process.
It hence allows proper quantization information update for a more
precise rate-distortion modeling in the non-RD mode decision.

The compression performance of speed -5 for rtc set is improved
by 2.5%, at no speed change.

Change-Id: Ic3713e8ed9185b403b5b1679d19dabd57506d452

Change-Id: I983364b33e8f103b43a0448821e890989176f1cc

Change-Id: Id48edd12c6f649c82113128491ef6ea7410e93b2

Change-Id: I922d988486b47f413d11a8eeb38532a484d15c80

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

Change-Id: I091ef27d2047eeb8b73ceb7c2c7c45b38ba8c6d5

Change-Id: I43de248615b79828d5164b670e7358b8a520d075

Change-Id: Idca7c1cd8a12df465c58b6ba064a99404b3b4bce

Use cq_level (which is identical) from VP9_CONFIG instead.

Change-Id: I1aaf2fcef3d2dbd4577f613d27693ff8a68989fd

Change-Id: I2d577d11966fcc5ffaaf0896bf51d18078ad1e9c

To make direct side by side testing this patch combines two
VBR corrections schemes to allow more direct side by side testing.
(The other patch was by Debargha chg id I0cd1f7...)

Change-Id: I271c45e5c4ccf8de8305589000218b80d9dc3a25

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

Change-Id: I098bd2950f5e5829ed5dc2b48568167248da7fad

Change-Id: Ia7d33bc3eb595965bccf4b2231df1e3b2a0243c6

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

Add code to monitor over and under spend and
apply limited correction to the data rate of subsequent
frames. To prevent the problem of starvation or overspend
on individual frames (especially near the end of a clip) the
maximum adjustment on a single frame is limited to a %
of its un-modified allocation.

Change-Id: I6e1ca035ab8afb0c98eac4392115d0752d9cbd7f

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

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

Fix rate control bug whereby the rate factor heuristics
were being updated on arf overlays causing a rate surge
for a few frames followed by a corrective drop.

This fix eliminates many of the overshoot problems that
we were seeing on hard clips (even without applying
stricter vbr rate control) and also helps quality on
almost all clips with some hard clips improving by >5%.

Overall quality results measured at speed 2.
Derf  +1.78% opsnr , +2.44% SSIM
Stdhd +2.41% opsnr, +2.85% SSIM

Change-Id: I2369df6295c2705963fa6307877f6acb304bcc39

Just to be consistent with min_frame_bandwidth & max_frame_bandwidth names.

Change-Id: I36702c708cba9ad1a5c36393f37758a2edeadb90

Change-Id: If6f013835b69ae61b0a0c6006fe0955303f579a5

Change-Id: I87819fed5aebb6ffe2f4d4655df226235a3d21cb

Change-Id: I988eea8f78f71135b914661420c5c75674e5c010

Change-Id: Ib8c1b3b0a5a5689d3261dc822a69e9d473b89be1

Change-Id: Id156af5662ebe6fbe1cab636564f5f4bedb85ab0

Change-Id: Id687aa617650a859463e7ae63dd4c0dc4f3e4779

Change-Id: I5ed360585dae2c9fea6c32058dbfb8ec07700677

Change-Id: Icb4851d98c951506fe5d73d8d5a8ac7e53fecfd0

Change-Id: I35b9d1856d7951b8df7c933df6936dfc52a28451

We don't use declarations from this file. The real declarations
(differently named) are in vp9_rtcd_defs.pl, e.g. vp9_full_search_sad.

Change-Id: I73cbf064305710ba20747233cfdbe67366f069a0

Change-Id: I6ea1c335da9ca5b65f6a11466b417ad196fd0d65

Added command line flags "resize-width" & "resize-height"
to allow the user to specify the frame size to encode at.

These two flags are ignored if the "resize-allowed" switch
is not set to 1.

All frames in the clip are then encoded at this size, which
must be smaller than the raw frame size.

Change-Id: I3d64bd9303d5c0bd678461a866a1ea621700d744

This prefix reserved for global scope functions etc.

Change-Id: I671cda2a63e01a40aae3d7407dd1bb4d338d709c

A previous path improved speed 2 quality a little but
more extensive testing showed that it slowed encode
by a few %.

The change will have a similar effect for speed 3 but
should not impact speeds 4+;

This experiment should reverse that and give a speed
up at the cost of a small quality loss.

Borg results pending.

Change-Id: I4493fc1541aaf44587f1a41ff219f7088da9252c

vp9/encoder/vp9_rdopt.c:3913:44: runtime error: index -1 out of bounds for
type 'RefBuffer [3]'.

Change-Id: Ic0ec755328853b359e3a1ee84d319589183e38b7

Both values are already checked as command line arguments:
RANGE_CHECK_HI(cfg, g_lag_in_frames, MAX_LAG_BUFFERS);
RANGE_CHECK_HI(extra_cfg, sharpness, 7);

Change-Id: I584798d587152d88dfd517c210054b466f4e5f8a

Change-Id: I258351fc1fff70ff2e9fa4845e575b0bb6a423d1