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Change-Id: I41ee684cf113a7b5edf280183e51cb08b2e93cc4

Reduce unnecessary fetch from MB_MODE_INFO.

Change-Id: Iff89b76d5e2774c00a564e902913a633fa2e1ea9

Move the scaling factor outside column projection. This avoids
repeated calculation of the same scaling factor. Profiling shows
that the percentage of vp9_int_pro_col_sse2 of overall cycles
goes from 2.29% down to 1.88%.

Change-Id: I5ac4e324ab2d7f33ba2de66dd2a12e04e04dfd66

Change-Id: I4039f8ac75a9cfcc4d07abd0619d1379bb10fe51

Change-Id: I32f0bcb40c6e7ba63bfae487739ededd0b6b2dde

The compression performance of speed -5 is on average 12.6% better
than speed -6. At lower bit-rates, the gains are typically 20% or
more. For 2-thread encoding, the speed -5 takes about 1.6x time of
speed -6.

Change-Id: If7a73464a24d33e8f49b9533b51ec51c8da7fc80

This makes clear that for end-usage, only 0 is supported currently.

Change-Id: I99795807c20df1d71b3c803e8d5f3b36583dcc85

The commit updates the comments in vp8cx.h to make it clear which
codec support each of codec control functions.

Change-Id: Ibf876e289d4325bbb61ce19311da60d384624c2f

Crash occured on very first key frame, because denoiser
temporal function was beng entered.

Updated denoiser unittest to set cpu_used from first frame,
and verified fix fixes the crash.

Change-Id: I3be1124b52846fbbe7248d2c3d6136e086c80bc1

Change-Id: Ie0c3ef3ae3aedf049b1a296de607730b79c12672

Change-Id: Ib54ab11adf8178eec74f65388a89c8f912c7869a

Change-Id: I70ee538609cefad76b8ce9b225bbf8d8447aff23

* changes:
  Added comment for vp9 only codec controls
  Rename a vp9 only control with vp9e prefix

Change-Id: I5c96b6a25f9df60da65b7af7c92a921b611746e3

Comments are updated to reflect that these controls apply to VP9 only,
thereby, to insure the document produced by doxygent to reflect the
same fact too.

Change-Id: Ic54c88ec066aa0ec4552d43dd4a7016e1f810f42

Also updated comments and doc to make it clear that the control is
supported in VP9 only.

Change-Id: I6f120b65135fc1185695e9e3dc29fbe0d430824b

This commit uses a 6-point 1-step refine motion search in the
integral projection based full pixel motion estimation, to replace
the current 9-point search.

It reduces runtime cost of speed -6 on some noisy clips, e.g.,
dark720p single thread
33314 b/f, 40.076 dB, 18231 ms ->
33307 b/f, 40.067 dB, 17768 ms

The compression performance for rtc set remains unchanged.

Change-Id: I194ea5a9ce52e5a10baeee36338633adc22f764c

Change-Id: Id7f8654aeeb20caa402bc822521b1d72c658f4f9

This commit changes to use single loop to evaluate all inter modes.
There is no impact on compression quality and speed, but allow future
experiment with the order of modes evaluated.

Change-Id: I71696ce1014cbe127e25e98710d835987f5ecc09

Added a skip_dc check. If skip_dc = 1, we could eliminate calling
of vp9_model_rd_from_var_lapndz(). This gave slight PSNR & SSIM
gain(<0.1%), and no speed change.

Change-Id: If5ca733366148c86b98e196a00cc890f50e9a3e5

This resolves webm issue 968.

Change-Id: Ieb363129b1e135a561141c68211d413226aba754