The initial reset of this_rdc in vp9_pick_inter_mode is not needed,
since it will be re-assign when used.

Change-Id: Ic0e12d741cbab292fc214c1eabb48b129af7839b

Compare the current best mode rate-distortion cost with the skip
threshold to decide if performing motion search.

Change-Id: Ia071824f8dd3b7db485f424692a485a2da6a1a9f

Change-Id: I0222f7abc61202f4a83b117bbfb042ada6304562

It makes the overall speed -6 about 2% faster with no compression
performance change.

Change-Id: I680a967b421caa2c5a5cdb821311c4726a2df45a

These speed-up features for key frame coding are only turned on
in the settings of hybrid non-RD and RD mode decision. It provides
about 20% speed-up to the hybrid key frame coding at the expense
of certain compression performance loss. For vidyo1, the key frame
coding statistics are changed
9838F, 35.020 dB, 61677 us -> 9920F, 34.834 dB, 47556 us

Overall rtc set compression performance is down by -0.257%.

Change-Id: I0025447fda26bb7855e982955642b5f55d71b51f

When block size is below 16x16, the encoder swap from non-RD to
RD mode for key frame coding. This largely brough back the key
frame compression performance. For vidyo1 at 1000 kbps, the key
frame coding statistics are changed

9978F, 34.183 dB, 36807 us -> 9838F, 35.020 dB, 61677 us

As compared to the full RD case
7187F, 34.930 dB, 214470 us

The overall rtc set coding performance (single key frame setting)
is improved by 1.5%.

Change-Id: I78a4ecf025d7b24ec911e85be94e01da05e77878

Change 72193 made the encoder behave differently
when configured with and without high bitdepth.
This change means the same algorithm is used for both.

Change-Id: I707a44a94afca773a9e0c2f7ebeeea83030257c5

Currently, VP9 supports column-tile encoding, which allows a frame
to be encoded in multiple column tiles independently. The number of
column tiles are set by encoder option "--tile-columns". This
provides a way to encode a frame in parallel.

Based on previous set of patches, this patch implemented the tile-
based multi-threaded encoder. Each thread processes one or more
tiles.

Usage:
For HD clips:
--tile-columns=2 --threads=1/2/3/4

While using 4 threads, tests showed that the encoder achieved
2.3X - 2.5X speedup at good-quality speed 3, and 2X speedup at
realtime speed 5.

Change-Id: Ied987f8f2618b1283a8643ad255e88341733c9d4

Change 71789 renamed CONFIG_VP9_HIGH to CONFIG_VP9_HIGHBITDEPTH.
However, one use of CONFIG_VP9_HIGH was missed.

Change-Id: I0ebb9c71380c6d810a25708d15471abf9533e695

Related to fixing random number range.

Change-Id: I84d004600e1f6918badf08d08da421b4e8cc4826

Bug was introduced in https://gerrit.chromium.org/gerrit/#/c/72122/

Change-Id: Idb500ea619a30e7bc50e22fb8ee03be5282f41db

the gtest implementation used only returns values between 0 and 2^31-1

+ temporarily disable some tests in fdct8x8_test which misbehave with the
  new range

Change-Id: I45381076f0bea3317cc6728305890e4fd2f2facd

Change-Id: Id8c8c3be882bcd92afea3ccec6ebdf3f208d28ef

Change-Id: I0c39136d67e1e83020d61f86b062a04182ec9b00

Change-Id: Icc7a816491897107764e4c936288e9000e6319b8

Change-Id: I714ca22b5d51016bf8b035cf457616c707257641

For a few refresh periods after key frame, use large qp-delta
to increase quality ramp-up.

Change-Id: Ib5a150fb2dfa6bafd0d4e6b5d28dfd0724b61319

the gtest implementation used only returns values between 0 and 2^31-1

+ temporarily disable some tests in lpf_8_test which misbehave with the
  new range

Change-Id: I8a026680c4b8c12dc14d4f24c33edb2315963114

Change-Id: I6e5e0571d6967b9b992966336715e35bb97f187e