In non-rd real-time mode, choosing smaller transform size in
encoding gives better video quality and good speed gain than
choosing larger transform size. This patch set tx size search
method to ALLOW_8X8, which is better than using 4x4 or other
larger sizes.

Borg tests on rtc set at speed 6 showed significant gain on quality.
PSNR gain: 11.034% and SSIM gain: 15.466%.

The speed gain is 5% - 12% for <720p clips, and 2% - 7% for
720p clips.

Change-Id: If4dc74ed2df359346b059f47fb73b4a0193ec548

This is not a speed feature, adding inline function instead.

Change-Id: Ia48c41802eec9e92cf990339d724097279695c9a

Change-Id: Ib8187c8f2556e1e9268b0683cd2b6ff3489f0205

Change-Id: Ifcb46e6904730d14b9ef76b648b4d0dc3cd5d0c5

The same enum defined and used in vp9_mvref_common.c.

Change-Id: I3975103997797add0a258d36c96d20ac9561a73d

Right now there is just one place to check: xd->lossless and for the first
pass there is a function is_lossless_requested().

Change-Id: I949a6834e64ce51e422e2892f097f2b871b5429a

As a side-effect, the sad unit tests for VP8 and VP9
had to be separated.

Fixes a bug in original patch:
(https://gerrit.chromium.org/gerrit/#/c/70163/8)
that was reverted due to a nightly test failure.

Change-Id: Ia2a4e9e278fd3c89d6c3c82fcc6381320ec2a8a6

This reverts commit 91655042

Change-Id: I500822b03f09c64ff6ec5396c68edee9ca3b75cb

This aligns the encoder behavior with the decoder.

Change-Id: Ifa0840e4b07b19309e0bf1d1182498883249ec45

Change-Id: I87b7c657d8813d7fb383ab519d150c0ffb1dd377

This reverts commit e8bbb3d9.

Change-Id: Ie368d36fd249d323d859d208609c711f04537bbc

As a side-effect, the sad unit tests for VP8 and VP9
had to be separated.

Change-Id: I068cc2391eed51e9b140ea6aba78338c5fec8d71

Use the appropriate subblock offset mode info rather than the parent
block base, when filling mbmi in the pc tree in nonrd_use_partition.
This mimics what is done in the vertical case and what is done for
both cases in nonrd_pick_partition.

This change has little practical effect at the moment since in speed 5
rt horizontal and vertical partitions are currently only used unpaired
at edges of the picture.

Change-Id: I4632f66ca84086dac56c7d36b45ddbe38a06f42a

This commit changed to enable the encoder to adjust motion dection
speed threshold based on picture size. In addition, cpu-used 1 now
does a partition search every other frame instead of every third
frame for low resolution inputs.

The change has no quality/speed impact for 720p and above. Test
showed the change increase encoding time by between 3% to 6% for
cpu-used 2 encodiong of 360p sequences. It also has a compression
gain about .3%.

For cpu-used 2, the change resolved some very disturbing visual
artifacts in certain sequences when large block partitionings and
transforms are used as a result of copying the partition from a
previous frame.

Change-Id: Ic7fd22508cdb811d4ca935655adbf20109286cfa

The final goal is eventually to get rid of both itxm_add and fwd_txm4x4.
This patch does it in the decoder.

Change-Id: Ibb3db57efbcbb1ac387c6742538a9fcf2c6f24a5

Change-Id: Ia0dc05e530428af9ab5aa57e24f1115b0b4765d3

Because PC_TREE is encoder-level data, not MACROBLOCK-level data.

Change-Id: I4f620c0781acd3a2744860610117e74948e0b2b5

Change-Id: I9ef40f3d95ab8f94f69e92ea25678a40956bc1ce

Change-Id: I7ed7fecc959c6598ff98895f1a5cf7e11ac1615f

This reverts commit 7ab9a958

Nightly test http://build.webmproject.org/jenkins/view/libvpx-nightly-tests/job/libvpx%20unit%20tests%20(valgrind-2)/arch=x86_64-linux-gcc,filter=-*VP8*:*Large.*/276/console

Failed 

This patch did not address all the assembly issues 
some of the vp8 assembly counts on 5 arguments being passed in to this function:   

one example : vp8_sad8x16_wmt

Please address or split this into vp9 and vp8 patches.

Change-Id: I78afcc171649894f887bb8ee3c66de24aaddc7ca

As a side-effect, the max_sad check is removed from the
C-implementation of VP8, for consistency with VP9, and to
ensure that the SAD tests common to VP8/VP9 pass.
That will make the VP8 C implementation of sad a little slower
but given that is rarely used in practice, the impact will be
minimal.

Change-Id: I7f43089fdea047fbf1862e40c21e4715c30f07ca

Remove unused function parameters from:
vp9_encodemb.c
vp9_encodeframe.c

Change-Id: I07725e5099cf98486e70c9c70babb0cd785c58a9

This commit enables a chessboard pattern for partition search. All
the black blocks run regular partition search ranging from 8x8 to
32x32. The rest white blocks take the nearby blocks' information
to adaptively decide the effective search range.

The compression performance for rtc set at speed -5 is down by 1.5%.
For pedestrian 1080p at speed -5, the runtime goes from 41594 ms to
39697 ms, i.e., about 5% faster.

Change-Id: Ia4b96e237abfaada487c743bca08fe1afd298685

Change-Id: Ifb7937c977308c682986f0ce9645a0807d2aa46a

Change-Id: I2b618dfe753f8c6139cecadc5caf14826abb67d9

Change-Id: I6b520553cb5334b44356dc4651a2dbc1cb93cca5

Actually, it would be great to have two separate enums INTRA_MODES and
INTER_MODES in future.

Change-Id: I6c4147cf0002853da9c1e03fe9514eab876f01c8

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

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

Change-Id: I091ef27d2047eeb8b73ceb7c2c7c45b38ba8c6d5

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

Change-Id: I098bd2950f5e5829ed5dc2b48568167248da7fad

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

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

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

Change-Id: Ib8c1b3b0a5a5689d3261dc822a69e9d473b89be1

Change-Id: Id156af5662ebe6fbe1cab636564f5f4bedb85ab0

Change-Id: Id687aa617650a859463e7ae63dd4c0dc4f3e4779

Change-Id: I6ea1c335da9ca5b65f6a11466b417ad196fd0d65

Change-Id: I258351fc1fff70ff2e9fa4845e575b0bb6a423d1

With a more approriate one vp9_setup_src_planes() as only src buffer
pointers need to be initialized here.

Change-Id: I40fac4d8b2d39eb7d0c65b9b6afab45138a13936