This commit optimizes the bit allocation for the non-RD coding flow.
It applies slightly better quantizer to the frames, where all blocks
run a non-RD partition search. Such frames typically have better
rate-distortion trade off, thus improving the reconstruction quality
for next few frames reference at reasonably low increment in rate
cost.

The coding performance for rtc set at speed -5 with error-resilient
tuned on and rate control set as cbr is improved by 19.58%. It improved
the coding speed by about 10% for a portion of local test clips.

Change-Id: I9d56696cd4359dc8136ca10aff10fff05aaa2686

For very large size video image, the scaling calculation may need use
value beyond the range of int. This commit upgrade the value to 64bit
to make sure the calculation do not wrap around INT_MAX.

The change corrected the decoder behavior.

The bug affects only very large resolution video because the scaling
calculation was sufficient for image size smaller than 2^13.

This resolves issue:
https://code.google.com/p/webm/issues/detail?id=750

Change-Id: I2d2ed303ca6482f31f819f3c07d6d3e98ef3adc5

This commit adjusted the speed steps in rt mode to make the steps
more evenly spaced on speed and quality, specifically:
1. Merged 3 and 4 into one single step 3 and removed confilicting
features.
2. Move 8, 7, 6, 5 to be 7, 6, 5, 4 repsectively.

Change-Id: I38d56d61531f3561d772aef953c411c8fb38c063

Root cause is the different default register length between x86
and x64 platform. Change spatial_layer_id to long long.

Change-Id: If1a5972365c7a59f7e76cb4fd714610f3d48a8ff

Change-Id: I366850015004644c4fc7feabe27a782fdd8d8718

Change-Id: I3e20c0cdb9d2437bddf21afb255855f2dead8e02

Change-Id: I7d9874da8ff78a2d7e0cf11073af9c30538bc9a6

Change-Id: If67ed8721f258883e41bab18f5c456505de68785

Change-Id: Ia6b1e3c5a8ac21219bbfe9eecdb4801f3eaa10e5

Change-Id: Ib09eedc17ea0ea2eec75d78112e4786d98f382aa

Properly obtain and buffer the segment_id in non-RD mode information
update process.

Change-Id: I43230001872f6a986d12c0d94e98fdec0db3be2c

Small speed gain for speed 1.

Quality is generally a little up for speed 2.

Speed 3 was similar to speed 4 but now positioned more
evenly between 2 and 4 speed and quality wise.
   (opsnr +5.6% ssim +8.25% across all sets)

Speed 4 is a little slower than before but sizable quality gains.
   (opsnr +3.7% ssim +6.8% across all sets)

The code has been cleaned up a bit so that for each incremental
speed step changes over the previous speed step are applied.
This makes it easier to see what is changing from one setting to
the next.

Change-Id: I2d98d0d6230af23486adaec01908f58942a7cdeb

Allow tx search for ARF and GF helps quality but a little slower.
Setting subpel_iters_per_step to 1 improves encode speed.
Setting sf->mode_skip_start = 10 improves speed.

Initial local results suggest overall impact on quality is neutral
but encode is up to 15% faster.

Change-Id: Ibde02cae6626a44c10a1da0cefe888afbb51f037

Removes a TODO. Changed meaning of some parameters
(target-max-percent refresh and starting index) to be
defined relative to superblock. Also, modify turn-off condition.

Change-Id: I5e55f372b7079c24f9cdac0b06fa34620dbf456b

Change-Id: Iffa45b9b04196c1ded6037622a8644a2500a62de

This commit enables the non-RD mode decision coding flow to
adaptively apply partition search in non-refresh frame, when the
collocated block in previous frame suggests there might be a motion
activity. It refactors the update_state_rt() function to support
buffer swap of mode_info struct, thereby unifying the encoding
stage across various non-RD coding modes.

It provides 5% compression performance gains in speed -6 for rtc
test set, at about 12% speed slow down.

Change-Id: Iefa374aed5a11c4b7ff9a3ed36a98ea8bd184edb

SPEED_FEATURES should contain only configuration parameters.

Change-Id: I7d6d0636879c3e87dad09bc9455c1cf1dc039da8

Change-Id: I32695ad703dcbbbbf5f122b403f3d3120a0be366

Change-Id: I32beb5f18c10b5771146c55933b5555487f53633

Fix so that vp9_update_segment_aq() will use the correct (i..e, chosen)
encoding mode (from ctx struct) in update_state.

Change-Id: Icc4b66f3935fad5ec4516a4d57e843d12c365e64

This commit allows the recursive non-RD partition search to early
terminate sub search tree when the cumulative rate-distortion is
already above the best available.

Change-Id: Ifdbcbb4bee229f47fde3033200829577c9f1fc1d

Change-Id: I3d9fc6da986d0f1ec682fb12e067c52472453eed

This commit added a speed feature to make the logic of calculating
skip_recode on a block level more explicit. This also enable the
feature to be enabled at speed 5 where the previous logic is too
conservative, help gain back the lost speed for --rt(-5).

Change-Id: Ieb37ca3e85c2e7bda343486edf13d5f5395f2233

Change-Id: I4c4772c0e6aca2c7d7085a72412ac8dba8874a3d

Change-Id: I6b20248b6f76545356f910ca6386f5466e287b6e

Change-Id: Ie5dadb5c2bcfe80a703edb58a71dc453644c9ade

above_seg_context is alreaded freed during vp9_remove_common() call.

Change-Id: I16b72c710e71d2f143df2d47e876d220c8d374e0

The recode_loop feature is disabled for one-pass always.

Change-Id: I6de8820add4a6f97196874af83a970f9898f842d

Change-Id: I713af99d1e17e05a20eab20df51d74ebfd1a68d2

There were a few conflicts between the new non-RD partition search
and recent clean-up patches, which were not caught by git control.
This commit fixed these issues.

Change-Id: Ieebefbd6c19d81d0d13e3c568877d5cce2ab7797

Adding the missed include file.

Change-Id: I7e48df6b0633afbebaf1ccb3062ae404e7203dc9

This commit takes out the if statements on using adaptive motion
search flag. This feature is automatically enabled in non-RD mode
decision flow for variable partition types search.

Change-Id: I5a25cf9109d84d07aa61b3e02c8d32dda1e90cb0

This commit enables a recursive partition type search for non-RD
mode decisions. It allows the encoder to choose variable block
sizes in a 64x64 block based on rate-distortion modeling.

It improves speed -6 coding efficiency for rtc set by 2.4%. Most
of the gains come from 32-40dB range, where many sequences gain
about 5% to 20%. Local tests suggest there is no speed change.

Change-Id: I06300016e500a21652812b7b3b081db39a783d66

Change-Id: I50db8d3c99eea39e46cc5876cb1f49513c084073

Change-Id: Ie624a119ce8e0891f4ca396040d679e22ef8ce27

This is to silent a number misalignment warning reported by valgrind.

Change-Id: Ia47a06010b28d7a88dde21f3e4ccb9308fc6f8cf

Change-Id: I47a8b4bf9a6cc0063d1a6785eaaad641d0659e24

Change-Id: I288e5ffade508fc3c803986d47ccf06df8d784dd

Change-Id: I044e393438c7b58a6393e20efa38fd03d745ad33

Change-Id: I01b3530779da89acb84c71bac5ccac456f00c5ac