the lookahead buffer allocation is deferred to receipt of the first
frame to allow profile changes. if the encoder was flushed before
supplying any frames the encoder would crash trying to dereference the
NULL buffer. vp8 is unaffected.

fixes mozilla bug:
https://bugzilla.mozilla.org/show_bug.cgi?id=1237848

Change-Id: Icee4b64de760476eee0d33b568f0a1010335ff13

Use multiple clusters instead of one and decrease
the distance thresholds.

Add a define to switch between models.
Default is set to existing (1 cluster) model.

Change-Id: I802cd9bb565437ae8983ef39453939f5d5073bb1

If a superblock contains alot of "skin" then force split
of 64x64 partition, and make some adjustments in mode selection.

This helps to reduce artifacts on moving face/skin areas at low bitrates.

Little/no change in metrics: avgPSNR/SSIM down by ~0.12%.
Small encoding time increase < 1%.

Change-Id: Ic57f52148c3716f391419fab0530d916e4c1d186

Change-Id: I32aacd014df6c927cf2893dc096cbe6ec7604b9b

For aqmode=3, golden period update is set based on period of cyclic refresh.
Put a limit on max golden period update, for now set to 40.
And fix comment.

Change-Id: Icb61dd87c796cce2a5f5f7331c6a129540994696

-.220 BDRATE derf: https://x20web.corp.google.com/~aconverse/results/cost256_derf.html
-.675 BDRATE hevcmr: https://x20web.corp.google.com/~aconverse/results/cost256_hevcmr.html

Change-Id: Ifb1646d8ce65ffe0eff9953a911b1b88735b335f

Change-Id: I336fe2006288214977b5ee854124ee7b5bba5796

Made the definition of THREAD_FUNCTION consistent.

Change-Id: I1ac099484e201e359298ed16de0b81ec781075ce

Limit oscilation detection in the case where overshoot is very very
large.

This keeps the 9-bit cost patch from breaking the DownUp reisze test.
The patch pushed us to an 11% undershoot right before a scene cut
causing a 1200% overshoot. (Whereas before we were undershooting by
only 6% before overshooting by 1200%).

Change-Id: Id90ccfab8aba872ccadc45b73b3bb097b895677f

Change-Id: I0b8eff9e74e3446024482d011ec4fb28b19136d3

In inter mode search skip all modes except NEARESTMV and DC_PRED.

10% less encode latency for large frames using the chromium remoting_perftests.

+0.313% BDRATE on the screencast set at speed -6.

Change-Id: Ib97a39dd8bcdeab545509e0e02d78ce7033f8c63

These values are set in set_mi_row_col()

Change-Id: Ie44c9d2dcb79797a8473b5fc29394277a7117547

a wrong variable.

Change-Id: I9fa02621dbdc508a12ba1ef9c8f98dbeab68e958

Error only affected svc 1 pass mode, introduced in:
https://chromium-review.googlesource.com/#/c/319609/

Change-Id: Ifc078c82d38b742966a81baaf5ad532f7dbc13a4

Change-Id: I39d3a150de9a77967a4e25ca89d2eda51fd18d47

Change-Id: I6a7fa6d0ae8ce8de7b426189d5eb00413f21bc17

Add TODO to consider turning-off more smoothly.

Change-Id: Id6dd4c5c515f5b09c388af965eb27dbe24924362

Change-Id: I9649647cc5755c8411ddd56f92e7f96d421c2663

Repack TOKENEXTRA fields.

Speed impact within measurment margin of error.

Change-Id: I9a6d1dde1bb4a0766b02d0cb74c871ddde907cde

Remove comment(s) and enable frame-dropper for tests.
Frame dropper for 1 pass svc was fixed a while ago:
https://chromium-review.googlesource.com/#/c/309230/

Change-Id: I5fd3192825b22e562db9210d3dc7b246a1799d8d

Make it consistent with the comment/intended behavior,
that is, only denoise if current block is zero_mv.

Change-Id: I3909761e802e80089752a493ab3646dc32698ded

This fixes the build errors with msvc.

Change-Id: Ie2716e4c15a1bacfb00a8d41ec3283d718af88fc