Instead of using source variance, this patch uses variance of the
frame difference between the source and the current frame to make
fixed size partition decisions. Also disables adjusting partitioning
if variance based or fixed size partitioning is used.

The latter change improves the speed substantially for speed 6, so
that speed 7 is now less than 3x the speed of speed 6. But speed
6 is 48% better in psnr on the rtc set compared to speed 7.

As compared to speed 5,
speed 6 is -37% in psnr at about 2.5x the speed,
speed 7 is -55% in psnr at about 7x the speed.

Change-Id: If61d80431d3e04ed304ac05832e773cdb2c0a578

Change-Id: Idd800fae21508699e9d973134817493763a65042

Adds a method for determining a fixed size partition based on
variance of a 64x64 SB. This method is added to rtc speed 6.
Also fixes a bug in rtc_use_partition() and includes some
refactoring related to partitioning search, and some cosmetics.

Currently compared to speed 5, the coding efficiency of speed 6
is -19% and that of speed 7 is -55%, in cbr mode.

Change-Id: I057e04125a8b765906bb7d4bf7a36d1e575de7c6

Change-Id: I7e96d6199f882d35357f6a9a08c04ad0af5dc26e

The optimizer did something funny with the code around
line 1412.  Before the call to encode_sb split_dist was
set properly but after it was adjusted and converted to
a negative.

https://code.google.com/p/webm/issues/detail?id=714

Change-Id: I9a7631d5325ade2dc28c1030653a23eecec8721b

If sf->disable_split_mask is DISABLE_ALL_SPLIT, disable
sf->adaptive_pred_interp_filter to avoid unnecessary operations.

Change-Id: Icb59174b2f4e9a3c3c16a696deb8018e5bd999eb

Moves the existing speed 6 to speed 7 and adds an
intermediate level 6 which is roughly in between
speeds 6 and 7 in both speed and coding efficiency.
Also includes some minor fixes/adjustments.

Change-Id: I98befc4d82d750e79fe426c457c4a2571f6b6cc7

This commit makes a refactoring of the rtc_use_partition. It allows
the encoder to take a preferred block size for non-RD mode decision.
The boundary blocks are handled such that smaller block sizes that
fit in the boundary size will be used instread.

In rtc mode, the coding performance of speed -6 for pedestrian_1080p
goes from
158980 b/f, 38.934 dB, 22721 ms to
159008 b/f, 40.064 dB, 23721 ms.

For rtc set, the speed -6 compression performance is improved by
26%. Still about 2dB behind speed -5 at this point.

Change-Id: If0944f0880eaf1ad340bc325d97cea8d0f9dd53f

Cast result of round() to int.

Change-Id: Ib708fddfadde4c765001ce9723fda113fd0f4bf6

Cast result of round() to int.

Change-Id: I4982886ad4e7657b4c40d21bd850d31690a68c28

Change-Id: Ia9252ad0caa4d2bda529a3fe93efcb31e7eb2da0

Change-Id: Ia70057e11c9b3d9d4bea6fbdd08839334ed02dce

In the first coding run of a 64x64 block, check the coding mode
for each 8x8 block. Will need a second annealing stage to decide
the partition size to be encoded.

Change-Id: Ida9417805ff3358979b0c0429d4099c023c88866

Removed the comment "// __asm emms;" from all calls
to vp9_clear_system_state.

Change-Id: Ib4dae69c1cdf3f185b04184a870cd70c4d703f10

Run sub-pixel motion search when NEWMV gives lower rate-distortion
cost. This improves coding performance of derf set by 8%, std-hd by
2.2%.

Change-Id: Ife50f7fda8463927784fe59a41cc439c833e941a

Prior to this commit, both encoder and decoder reset mode/mv info from
previous frame in error resilient mode to ensure bitstreams are able to
decode when there is loss of frame in decoder side. However, this is
not necessary. This commit changed to remove the reset, so encoder can
continue to use mode/mv/partition information from previously encoded
frame without affecting decodeablilty under loss of frame.

Change-Id: I0279f862900dc647fb471ae3389770bb1b9f454f

In rtc coding mode, the encoder is running non-RD mode decision. It
does not need dual buffer swap as was the case in the RD mode. This
commit initializes the internal buffer pointers outside the block
coding loop for rtc mode.

Change-Id: Ie076705c60d6b7919217e3f1dfd49e7db5064ac2

Change-Id: Ie51cf58de4f872d2261022558b6afe780bbc470b

The functionalities of set_offsets() are subsumed in later
set_partitioning() and rtc_use_partition() functions, hence removed.

Change-Id: Ie514b13cb66c2379f13d0be9b1da4c12ca4581e5

Change-Id: I036e815ca63d00cba71202ae09ba0f6ef745dcb8

This function initializes the predictor buffer pointers and
calculates reference motion vectors. It is only needed in the settings
of inter frame coding. Hence removing it from the key frame coding
branch in rtc_use_partition.

Change-Id: Ic4e16c7467a5f32be4e0bf619ef9d57afb4a7075

Change-Id: Ic5692af975fe6bd2d8ec82bbae103c6f7c2fc13e

This function is deprecated after the re-design of partition search
that runs big block size, then four-way split, followed by
rectangular block sizes. This commit removes the related functions.

Change-Id: I417549c8e0fa3cf35bd29816b805dd4e7c3660c6

The function rd_pick_reference_frame can be deprecated. Its use was
subsumed by the adaptive motion search control.

Change-Id: Icb0c2fa335f0f06fa7b79a71f972d9fa54d750db

Change-Id: If14d2fc8cf4202d24f7d87ea74b8ce88a6a816d9

Change-Id: I4d2729dc5c46db2847700256941a66b0957c105d

Change-Id: I35ec77b71e6fd686865cead9281e4dd9e9bc9e86

In real time encoding, we enable encode_breakout to make encoding
fast. A speed feature "use_encode_breakout" is defined to set
encode_breakout thresholds for different speeds.

However, currently, static_thresh is an encoder option. The encode_
breakout can be turned off if user sets static_thresh=0 specifically.

The rtc set borg test result: (need to set --static_thresh=1)
speed -5, psnr loss -3.543%;
speed -4, psnr loss -2.358%;
speed -3, psnr loss -0.771%.

Encoding speed test:
speed -5, 11% - 60% speedup;
speed -4, 5.5% - 28% speedup;
speed -3, 0.8% - 7% speedup.

Change-Id: Icde592ffbe77eac7446f872a2e9eb2051733677b

Aq 1 only updates segment map on kf and arf and
only uses 3 segments. With these settings AQ1 is
+ for most clips in SSIM but negative in psnr.
However, the penalty in PSNR is much less than
previously.

Old version aq1 average results for std hd
-20.899% psnr, -5.809% SSIM
New version aq1 for std hd
-3.57% psnr, +1.23% SSIM

Aq2 Now uses only 2 segments and rd.
This mode is still slightly negative for most clips on
psnr and SSIM but seems to have a much bigger visual
impact on several problem clips than aq mode 1.

Old results for std hd:
-2.578% psnr, -1.151% SSIM
New results for std hd:
-1.561% psnr, -0.85% SSIM

Change-Id: I94f57f8a73121629ce598fb921aad761c1450e1c

Use frame_parameter_update to precisely describe the functionality.

Change-Id: Ia9a55ba8efef7b987e30d949dd00ac716189bdb9

Function encode_rtc_frame_internal() and encode_frame_internal() only
differed by a couple of speed features, this commit relocation those
difference into the setup of speed features and merged two functions
into one to remove duplication.

It also fixed a subtle bug super_fast_rtc was used before it was
initialized.

Change-Id: I234a5a1d11a4450930e5b4943dbab434208d5030

Change-Id: Ic6a733f1fe92458da89c8459c5686ba1e08b92bf

Change-Id: I151bd3de689bceb72969120095257c37656db92f

Change-Id: I9139210fc6b9878de7844d74dd97784a6d289230

Block type was already detected by is_inter_block() call.

Change-Id: I7923ce11b6a0071ce9df8c744a78c816651a15dc

Change-Id: I71d85e3455545960938e525ae8aa0a667e1db94c

Fixes a build issue when internal stats is enabled

Change-Id: I822cc60274e34b5f29ccbaa1f986fb9da6a8de4b

Change-Id: Ifdd951f24932839f06d1c700371662511dde6ebe

Fixes an assert that crashed for 360p..

Change-Id: I2faf15c93cbdb0e62a27a3b663f0d09ba62774a8

This commit added a logic to prevent the inter_filter type from being
changed if the default interp_filter mode is not switchable. Also, it
sets the default interp_filter to BILINEAR at very and super fast rtc
encoding modes

Change-Id: Ic41e6d31de29795a4ce536ec79afb01cab6daad3