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"taking the absolute value of unsigned type 'unsigned int' has no effect"

Change-Id: Iea1f67c2a3171a98ca89d5dc7192a5508d086c16

Change-Id: I0b0fa7c9853ce12d39ee21829686b308154b2c61

These variable names were legacy from a previous version of this
function and in the current version they were confusingly backwards.

Change-Id: I4f6c1628f296fd5b650fd9c5e2d56d7daf66a3f6

Instead of using model_rd_for_sb() to estimate the cost and make the
decision on bmc/obmc, we use super_block_yrd/uvrd() to calculate and
compare the real rd costs of bmc and obmc.

Average bit-rate reduction(%) of obmc experiment:
derflr/derfhd/hevcmr/hevchd
2.353/TBD/TBD/TBD
Before the optimization, the coding gain was:
1.582/1.109/1.600/1.164

Note: there is still some mysterious bug because that compared to
the previous version, the performance at low bit rate drops a lot.

Change-Id: I8dbee04a272190f10516a3953c1ae690f8136766

It was broken by commit 3787b174

Change-Id: I2be0f6243e8716b9ca4c0321de381419108d1abe

Change-Id: Ib29f510289716b5ab5c7d74d32a450c190308a83

Change-Id: I7df48e7f3b57f212798ef4be86f28aed928fc3e0

Change-Id: Id026e72ee655ee5bd645a89e378da0d462be367d

This commits adds a shift stage for FASTSSIM computaton when source
bit depth is different from working bit depth, to make sure metric
results are calculated in bit_depth consistent with source.

Change-Id: I997799634076ef7b00fd051710544681ed536185

Change-Id: I12ce1da18b3db7bd2f36e0424a264b3c36fbed61

This commit adds the ability to shift down the working buffer when
source bit_depth is different than working bit_depth. It does so
by shift down to be consistent with source bit_depth.

Change-Id: Idfdbfc614d73fe445d62e35e642cc7d75e9dc4ff

Don't initialize first pass costs for a number of symbols where first
pass probabilities aren't initialized.

As a side effect, an illegal read in the ANS experiment is fixed.

https://bugs.chromium.org/p/webm/issues/detail?id=1089

Change-Id: I97438c357bd88f52f5a15c697031cf0c3cc8f510

From "ssim.h"

Change-Id: Ie53378794149ef8a844b4eb47ad4f08579de4b60

This commit unifies the motion vector cost buffers for full pixel
and sub-pixel motion search. The new motion vector coding system
provides 0.5% coding gains for 720p and above sequences and 0.2%
for lower resolution sets.

Change-Id: I927ec81eadc39d11a3c12b375221a1ddd2e8bf24

This commit extends the HBDMetricTests to handle testing for metric
computation where input source depth is different from working bit
depth.

Change-Id: I5d11101cc9603a3fd09e8439816bb982a0f1b654

Priviously, we do 12-tap interpolation even there is no sub pixel,
This could cause a bug becuase decoder doesn't extend border when there
is no sub pixel. In this situation, if we still do interpolation, we
will access the border extension which doesn't exist and cause a
memory error

Change-Id: I55b879722f0a10c5d13261bd9617a75c826a2418

This commit accounts for the context based probability model for
motion vector cost estimate in rate-distortion optimization.

Change-Id: Ia068a9395dcb4ecc348f128b17b8d24734660b83

This commit converts the scalar motion vector probability model
into vector format for later precise estimate.

Change-Id: I7008d047ecc1b9577aa8442b4db2df312be869dc

Change-Id: I51307a217eeba14dbdaa2522be474530316a4faa

Applied DST sse2 to 4x4 transform.

Fixed DST coefficient packing to satisfy 4x4 transpose requirement.

Change-Id: I9164714c77049523dbbc9e145ebb10d7911fba9d