Change-Id: Ic0345622115941f49b6a568c7b8154ba892cbf0d

This commit takes a preliminary attempt to refine the motion search
control. It detects the SAD associated with mv predictor per reference
frame, and based on which to determine whether the encoder wants to
reduce the motion search range (if the predicted mv provides fairly
small SAD), or to skip the current reference frame (if there exists
another ref frame that gives much smaller SAD cost).

This feature is turned on in the settings of speed 1 and above.

In speed 1, compression performance changed
derf  -0.018%
yt    -0.043%
hd    -0.045%
stdhd -0.281%

speed-up
pedestrian_area_1080p at 4000 kbps 100 frames
199651ms -> 188846ms (5.5% speed-up)
blue_sky_1080p at 6000 kbps
443531ms -> 415239ms (6.3% speed-up)

In speed 2, compression performance changed
derf  -0.026%
yt    -0.090%
hd    -0.055%
stdhd -0.210%

speed-up
pedstrian 113949ms -> 108855ms (4.5% speed-up)
blue_sky  271057ms -> 257322ms (5% speed-up)

Change-Id: I1b74ea28278c94fea329d971d706d573983d810d

Change-Id: I9b9a5fcce8530284df0f270706ee060a0edc1517

The line was accidently removed in 4dbad63a.

Change-Id: Ic1e18f209cead95cecc684f952ae667271b58a97

Buffer the SSE of prediction residuals in the rate-distortion
optimization loop of a given block. This information would be used
for later encoding control.

Change-Id: If4e63f3462490513c48be9407d3327c8dd438367

Moving all code from that files to vp9_mvref_common.{h, c}.

Change-Id: Ibc4afcb8cea6847166ff411130e93611ebe63b20

Moving back to scale_factors struct. We don't need anymore x_offset_q4 and
y_offset_q4 because both values are calculated locally inside vp9_scale_mv
function.

Change-Id: I78a2122ba253c428a14558bda0e78ece738d2b5b

Change-Id: I535bde16c8fc4c2cd263bbbbaed46ead4c776090

Before mv scaling it is required to calculate x_offset_q4/y_offset_q4
by calling set_scaled_offsets(). Now offset configuration can not be
missed because it happens just before scale_mv().

Change-Id: I7dd1a85b85811a6cc67c46c9b01e6ccbbb06ce3a

Change-Id: I82ecbe7fe0baa890ce251043f3c7159188c00665

Change-Id: I67d934b6af899ffd4bcad2d913a650685fa64abd

Change-Id: Iba91ff1e797a83517e2cd7c3ab86cba39f39415b

The original iterative search was replaced by subpel_tree search,
and was not used anymore.

Change-Id: I998b38e1cb0ee359a08b2410d0766dbf183ab071

Various cleanups and streamlining of interfaces as precursor
to further advancements in rate control.
Pre-encode parameter setting for different use cases:
One-pass, first of 2-pass, second of 2-pass, and Svc
are separated out.

There is no change in output with this change.

Change-Id: Ied8ca7d84d610993776aa30ef263fe20452e0e3e

Take account of the fact that the overlay frame is usually
very cheap so distribute target bits among the other frames.

Change-Id: I120685122e8cbbe75da8d07d02932f7877059867

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

Replacing: intra_inter_count, y_mode_count, y_uv_mode_count.

Change-Id: I5d70f73288af6effe6176e26400138067a2ae2a3

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