Adds various high bitdepth quantization functions.

Change-Id: I36fc0bf75a1bd15128ed271df8723de0ac134b0c

1080p decoding speedup -- 1.25%, 4K decoding speedup -- 2.5%.

Change-Id: I5f02f521cbf7758d4d1886a93bc5b074abdff03d

This commit adds back sse2 or ssse3 optimized versio of a couple of
functions, fixes a ~10% performance regression.

Change-Id: I049786906e5a641224dced63c6492aec9d86d183

The ARF frame should always be the same size as the
native resolution of the input frames.

It will be scaled to the required resolution at
encode time.

Change-Id: I0afe858129aa6ef65b1648f43476331715346896

This commit makes the encoder to use non-zero mode threshold for
NEARESTMV modes. The runtime for test clips of speed 3 is reduced
by about 1%.

pedestrian 1080p 2000 kbps, 143239 ms -> 141989 ms
bus CIF 1000 kbps, 7835 ms -> 7749 ms

The compression performance change is about -0.02% for both derf
and stdhd.

Change-Id: Ib71808922c41ae2997100cb7c561f68dcebfa08e

Code refactoring.

Change-Id: Idad53cb80497d13551a142a642f7529fc305b0bc

If the partition block is skippable, which means no coefficients
for Y, U, and V planes, its skip flag is set to 1. No quality
change (verified by borg tests), and no noticeable speed change.

Change-Id: I9231f720f8dd6364384cf05aa148ca24d75450f1

Merge "vp8/vp9: neon: msvc: move the 'ifdef _MSC_VER' bit to vpx_ports/mem.h.                      fix compiling warning."

This commit enforces ARF validation check for compound inter modes.
It avoids potential access to ARF in the encoding process if it
is not allowed.

Change-Id: I055fec946b5d19d97937dc9001e1e564923e2439

The valid reference frame check in sub8x8 rate-distortion
optimization search has been included in the ref_frame_skip_mask
scheme. This commit removes the later further validation checks
that are not in effect.

Change-Id: I853b477c44037d3dc0afec6cbfce08a96c597a75

Add vp8_mse16x16_neon.c
- vp8_mse16x16_neon
- vp8_get4x4sse_cs_neon

Change-Id: I108952f60a9ae50613f0ce3903c2c81df19d99d0
Signed-off-by: James Yu <james.yu@linaro.org>

This commit replaces the best_ref_index table fetch with the use
of best_mbmode in vp9_rd_pick_inter_mode_sub8x8.

Change-Id: I882ee9ee6a8c0e61befcca1f4dba6d2ea8de8f13

Change-Id: I9b6a74bdf003b39235f14f8b5b7f3b861f6bf131

Call to vp9_rc_get_second_pass_params() moved from
Pass2Encode() to earlier in vp9_get_compressed_data(),
to ensure that two pass stats and parameters are
available before decisions such as frame scaling.

Change-Id: If21537f0073919b04696a7d5e9aac78e23d76f39

Explicit type casting to prevent warning.

Change-Id: Ib5be4ad6d4126d88f7c67d246bb085df1e813329

                     fix compiling warning.

Change-Id: If8706a9046436f704c597e4275a6810c76ba7daa

Change from VP8E_SET_NOISE_SENSITIVITY to VP9E_SET_NOISE_SENSITIVITY

Change-Id: Ia210a7029b26924e30973f0f9798a338e0412407