This code dates from the ancient past and
applied an error score weighting based on pixel
brightness. This not seem to be providing any
benefit metrics wise and could be making some
visual issues in dark frames worse.

The field is left in place in the FIRSTPASS_STATS data
structure in this patch, pending changes to unit tests that
use a pre-defined first pass file.

Change-Id: Id50f04205230234858e7548ce523f11acaf3567d

* changes:
  Re-enable unit test on neon implementation of 16x16 idct
  Turn on unit test for inverse 16x16 2D-DCT ssse3

The previous change only tunes forward transform. It doesn't affect
the neon implementation of the inverse transform. Hence turn the
unit test on.

Change-Id: I4f0f43783b98814d1eee53182209f9669d538140

Change-Id: I02250d1364ca2e637585a8db020cba9fd4a95664

This commit enables the SSSE3 implementation of full inverse 16x16
2D-DCT. The unit runtime goes down from 1642 cycles to 1519 cycles,
about 7% speed-up.

Change-Id: I14d2fdf9da1fb4ed1e5db7ce24f77a1bfc8ea90d

The intepolation filter functions can be better tested withe extreme
values, especially given the optimization functions are prone to
overflow signed 16 bit intermediate value when operation order is
wrong.

Change-Id: I712142b0bc1e5969c692c0486a57ffa37c9742b5

Further changes to first pass allocation for gf/arf groups.
Three variables removed from TWO_PASS structure as only
now used locally. Dont adjust gf_group_bits in the post
encode update as this will no longer have any effect.

Change-Id: Iff89b225db923fc856f5d2aedbc899f1d7d68b55

In 8-tap filtering, to guarantee the intermediate results fit in
16 bits, the order of accumulating the products needs to be done
correctly, and the largest product should be added last. This
patch fixed the problem using the method in commit "Correct ssse3
8/16-pixel wide sub-pixel filter calculation".

Change-Id: I79d0ad60c057b15011ece84cda9648eee0809423

Restructuring to allocate the bits for each frame in
a GF group at the time the group is defined.

At the moment the allocation closely mirrors what
we had before.

Also changes the default rate adjustment method to
LONG_TERM_VBR_CORRECTION.

Change-Id: Ie5793c46c6b9c888cead5d8790792efd7d60b7c1

Fixes a bug introduced in
https://gerrit.chromium.org/gerrit/#/c/69779/13, where
uninitialized frame buffers due to corrupt and short
buffer sizes, may cause a crash.

This patch fixes the currently failing
video/processing/static_image/vp8_convert_test

Change-Id: I1b09e21482f292c11a2bfb4e570aef1d643410a7

As mismatchs were found  between the intrinsic version and c only. The
commit temporarily revert to use the matching assembly version to
allow further investigation.

Change-Id: I08436c47d4888b562c0eac8e8856d90a831442df

Prevents too small partitions from being copied to the next frame.

Change-Id: I4b97c30b27d06051574d54aaaca5434407a0c9ff

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

Initializes total_actual_bits and total_target_bits to 0

Change-Id: Ia50d3bf5df765146a44aa1f6045e73367ccf50df

This did the same correction as the one in commit "Correct ssse3
8/16-pixel wide sub-pixel filter calculation" to avoid saturation
during filtering.

Change-Id: Ife9aa3f62daf9114eb24fe38f7baa3c3f361b2d6

Change-Id: I4bd635949240880ced5f581c24e981ccd0374e40

Change-Id: I9120a87e27e73e496932d11716937e2fad246521

modified_error_total from TWO_PASS struct is not required anymore.

Change-Id: I0e07cac1e6d1b6a78418116be725bcd72bfbd847

We use libwebm instead of libmkv and nestegg.

Change-Id: I339eae081061c2e3eb8b234f14ae1bc846f85011