This will hurt metrics in some cases (particularly for static
clips at low data rates where there is extra overhead, but it
helps smooth transitions around forced key frames between
stitched kf sections.

Change-Id: I7e1026ae0de6c77bba863061e115136d7f283cc0

Slightly reduces the mean tendency to undershoot target
rate in vbr, especially when using the memory less mode
and when recodes are disabled.

The effect is primarily at low q.

Change-Id: I59a593b99522cc7da31b4134d1c8a65f5b7b7c53

Remove modified_error_used and adjust_active_maxq().

Change-Id: I8915007128dc1a17e11693104cfb008a6d64e6a2

Change-Id: I80a0cea96c65c0cfb530a71053616dba6edeb896

Replace repeated cpi->common fetching with cm variable in a few
places in vp9_onyx_if.c

Change-Id: Ifa16d617f37919b2e0baf8efb256130a647b5eb3

This commit reworks the prediction filter rate-distortion cost update
process consistent for all block sizes.

Change-Id: I5874349ab38df380240f96c2d4ef924072bab68d

Change-Id: Ia356178d6a3c40b512d3123390781ef94dec72d6

Adjustments based on buffer level, frame dropper.

Change-Id: Iaa85b570493526a60c4b9fb7ded4c0226b1b3a33

lf deltas are later setup in function vp9_setup_past_independence(),
so this commit removed the redundant copy. Also renamed a function
to better align the behavior of the funciton.

Change-Id: I5d28c2f5b12b3d31817e14296ed4605c1fd5c98c

Change-Id: I6ab9fe2326ebbadf0dd10cca9f66cf8277e3f43b
Replacing: comp_inter_count, single_ref_count, comp_ref_count.

Change-Id: If4ddbdcfb3ab387cbca6910b42cf4df8111e6879

As they are used by encoder only.

Change-Id: I7b1e6955b218aba66fe156523521a8121c9a84a4

Various cleanups and refactoring.
Removes feedback of active worst qaulity and uses last_q
instead to make the interface cleaner. Active worst quality
is now decided only once for a frame being coded in the
beginning based on last_q and other stats. Also, adds other
cleaups on last_q to store also the last_q for altref frames,
and reduces the altref interval a little.

The output does change a little.
derfraw300: +0.224% (global psnr)
stdhdraw250: +0.442% (global psnr)

Change-Id: Ie634cdc032697044c472dd0fe79c109b3e7f9767

Properly handle the rd_filter_cache update, when early termination
or skip prediction filter type check is triggered.

Change-Id: Ie7b9a75fed3358f45ffd15817f2b36670c14eb2d

Change-Id: Id677df4d3dbbed6fdf7319ca6464f19cf32c8176

Moving vp9_norm probability table from vp9_entropy.c to vp9_prob.c

Change-Id: Ie757b73860c6f43130790c332b292e2a1a81b788

VP9 decoder can now use frame buffers passed in by the application.

Change-Id: I599527ec85c577f3f5552831d79a693884fafb73

Change-Id: I8ae093d0b61d71d3c294b95d98d0178f7f67c8f6

Change-Id: I068345f722a7116e3119927295ad23a28d3066a0

Change-Id: I8b81a3e4b4fa530a654c28d9c136afa0c1d379fd

Change-Id: I44513b9db6d42e2c52723e1a429f06a93d300c8b

Change-Id: I7ff2899ea18a55b37f5c581431ef59806f01e009

Increased threshold(t) for interp filter search. This sped up the
encoder with some PSNR loss.

Borg tests were ran at speed 2.
t = 100, PSNR loss:
-0.710%(derf); -0.561%(stdhd); -0.647%(youtube)
speedup:
9%(derf); 3%(stdhd); 5.7%(youtube)

t = 500, PSNR loss:
-1.687%(derf); -1.665%(stdhd); -1.664%(youtube)
speedup:
18%(derf); 10%(stdhd); 8%(youtube)

Change-Id: I180e3657c1e156aaa88dc7c437f8bcbd19f5caba

string literal to int within an assert

Change-Id: I0c889256b67a078e6e2a79577f0b7ae084243258

This commit enables an adaptive prediction filter type selection
for sub8x8 block sizes. In speed 1, it re-uses the filter type of
collocated 8x8 block if it is tested in the rate-distortion optimization
loop, for the sub8x8 blocks. Otherwise, it runs the normal test
over all the three filter types. In speed 2, it re-uses the 8x8
block's prediction filter type, if available. Otherwise, force it
to be EIGHTTAP.

Compression and speed performance wise:
speed 1
derf -0.266%
yt   -0.138%

bus at 2000 kbps: 33766ms -> 30451ms (10% speed-up)
football at 600 kbps: 48173ms -> 43786ms (9% speed-up)

speed 2
derf -0.026%
yt   +0.134%

bus at 2000 kbps: 18973ms -> 17698ms (6% speed-up)
football at 600 kbps: 26748ms -> 25096ms (6% speed-up)

Change-Id: I77e097533b969fd3472147225fa79fc98095d342

Change-Id: I4991bc36e1627bd3a9495ca72c0738f1a937da2e

Change-Id: Ibfe04b920648e15bf7116f4fdc98960572a7007e

Change-Id: Iadf2fcc9a5bfa5d02fc166f31963be1cc814831c

Trying to make encode_sb() more similar to write_modes_sb() and
decode_mode_sb() because essentially all branching logic should be the
same.

Change-Id: Ib7dec7b48fce29418142abad4d1dcfdb1c770735

Silences some lint warnings in previous patches

Change-Id: I04bf47ebe7e63a95fd322719a3154e589c115d78

This function sets the motion search range limit. Rename it to be
more informative.

Change-Id: I2e8e01073dcb99c9bea9c9acd0a61d672d615444

This commit constrains the maximal motion search range for sub8x8
blocks to be [-1023, 1023], in the unit of full pixel.

Change-Id: I955b60649364ab410f2453cafd46a496f2fcb43e

Making name consistent with vp9_read_tree().

Change-Id: Ie213ffe0d5345bf3035f28e17f610894fec79205

Replacing if-else with switch statement, reordering function arguments.

Change-Id: I4825d2ef311ba8999b6d4ceb0eef003587a13434

In evaluating partition split case, Wrong partition size is used in
calling partition_plane_context(). This commit change to use the
correct sub partition size. The incorrect partition size used were
causing an ASAN error in unit test.

Change-Id: Iab695b764bc51cc61580075f2ae4001421132362

Renames:
  vp9_get_pred_context_mbskip => vp9_get_skip_context
  vp9_get_pred_prob_mbskip    => vp9_get_skip_prob

Change-Id: I2af499848ef73f3f5cd8cdb27852d0bcdfe31d09

Change-Id: Ie100114a01b8b4da7248603c40676792cd06b32a

Change-Id: I83ffed2b1878a35ac35f07f9ee74309adc9c7b11

Adding get_uv_tx_size_impl() with tx size selection logic, rewriting
get_uv_tx_size().

Change-Id: I3ecb108059a41be227a8c89a0710bd174f508951

Clean up and simplification of both estimate_max_q
variants and only call once per clip/section.

This leads to a more constrained range of Q values
across a clip / section.

Average gains across all 4 test sets:-

PSNR ~0.5%  SSIM ~0.3%

Change-Id: If77d5f7bb50939a464e117724f4da5b001c62d70