both the encode and decode perf tests require niklas_1280_720_30.yuv
broken since:
28eebf3e Merge "tests: add a shorter 720p test clip"
7839d038 tests: add a shorter 720p test clip

Change-Id: I51ebbf7261832e25d8f2c1da5c7df5c2e47f748e

Change-Id: I387da141ebade4fc4d2f3c0a2b6aa5aaea091c0c

a bit simpler than invoking awk for rand()

Change-Id: I36ac474708f7bf0157ae59b882c2a9f69b0aaf41

Change-Id: Idb14b9a285f8098126f967c5e2750221d6a58f69

Support variable block size integral projection based motion
estimation.

Change-Id: Iee6d65e44df4480aa13fb7b84b9c91914b89caa1

+ add a helper function to reduce the duplication

this is a bit clearer when the environment variable is set, but the
directory is missing

Change-Id: I08f9b56122b5741bb40a5f795f7f82f5b49f1047

Change-Id: I6728b69bb3dff1daa64ff7142f691e80a089f1c4

Change-Id: Iefb928ad1174e274409facfb44f80265ff0f7683

Change-Id: Ibd87db1c4371edcbe193d39df2fdc07d3842c21a

niklas_1280_720_30.y4m 60 frames @ 30fps
only a small number of frames are being used; this reduces the test data
download size in non-perf-test cases by >500M.
retain niklas_1280_720_30.yuv for encode+decode perf tests

Change-Id: I56b3433104acd462f952a9554280de5a3ec0b6d2

This commit applies one-step refinement search to the resulting
motion vector of the integral projectiion based motion estimation,
per 64x64 block. It improves the coding performance of speed -6.

pedestrian 1080p 500 kbps
51735 b/f, 36.794 dB, 16044 ms ->
51382 b/f, 36.793 dB, 16282 ms

cloud 1080p 500 kbps
24081 b/f, 37.988 dB, 14016 ms ->
23597 b/f, 38.076 dB, 12774 ms

vidyo1 720p 1000 kbps
16552 b/f, 40.514 dB, 8279 ms ->
16553 b/f, 40.543 dB, 8510 ms

The rtc set compression performance is improved by 0.5%.

Change-Id: I3d09bea2caf58b2a4f3b38aa26fffafcbe9a2c17

The intrinsic statement _mm_subs_epi16() should take immediate.
Feeding variable as its input argument will cause compile failure
in older version gcc.

Change-Id: I6a71efcc8d3b16b84715e0a9bcfa818494eea3f4

Change-Id: I3e0e53d129552babf29e6c5d047483733983973c

Change-Id: I1108d720bb3b30586b128dd01ce608e1e62b1756

Change-Id: I39f56f60425836f2e1ec07da71edd4810a4c78bb

This commit modifies the hierarchical vector match patter. It
avoids repeated SAD computation at same points. The function
vp9_vector_sad_sse2 is called 12 times per 64x64 block, instead
of 15 times as before. The effective coverage remains the same.

Change-Id: I91ad9d27d40db8963c907d02af84e10702136994

mark uint64_t constants with 'ULL'

Change-Id: I7648e161b4004fba35e1fa7ab79e34cc19e39716

In ssse3 functions, DEFINE_ARGS macro hard codes qcoeff and dqcoeff
to r3 and r4. If skip is 1, qcoeff and dqcoeff need to be loaded
from the stack, which doesn't work because of the above definitions.
Currently, skip=1 case is not used in the encoder. This patch fixed
the issue, so it can be turned on later.

Change-Id: I998d696b1a7a85dca2b3bcee790b21c21e039147

This addresses the issue #960

Change-Id: Iddf45b4bd4f53cb0ddfd879e800a071cd843b915

When GF group adaptive maxQ is enabled this patch accounts
somewhat for accumulated error in the rate control.

This improves accuracy quite a bit on many clips especially
when there is  overshoot.

Examples when the overshoot and undershoot command line
parameters are set to 100:

Hall @ 1200 overshoot is reduced from 67-24%.
Akiyo @ 400 undershoot is reduced from 28%-15%.

Setting a lower value for undershoot or overshoot still
reduces the error further.

Impact on metrics is mixed with some gains in average psnr
but generally a little lower (e.g. 0.5%) on overall and ssim.

The GF group adaptation is still off by default in this patch.
Compared to with the head, enabling this mode now gives
big average psnr gains on the YT sets (e.g. YT_HD >11.2%),
a drop in overall PSNR (YT-HD 3.9%) and a smaller drop or
neutral for SSIM.

Change-Id: If4b32cd0740d3fb941317b374f9c2951954eee90

Change-Id: I3edbb7cc67203fbbf32c6fd4a08015ca9d9ed53e