VP8E_UPD_ENTROPY, VP8E_UPD_REFERENCE and VP8E_USE_REFERENCE have been
deprecated since the initial public release

Change-Id: Ied16b441eec13434d85f1ab115d49ccaf5f2f7b0

Some more testing of this patch would probably be useful, but I
think the basics of it should work fine now.

See issue 1035.

Change-Id: I4a36d58f671c5391cb09d564581784a00ed26245

This experiment allows using full above/right edges for all transform
sizes whenever available (for d45/d63), and adds bottom/left edges for
d207.

See issue 1043.

Change-Id: I5cf7f345e783e8539bb6b6d2c9972fb1d6d0a78b

In VP9, the ref MV had to point to a block that itself fully resided
within the visible image, i.e. all borders of the image had to be
within the visible borders of the coded frame. This is somewhat
illogical, and had obscure side effects, e.g. clamping of fairly
reasonable motion vectors such as 0,0 were clipped to negative values
if the block was overhanging on frame edges (such as the last rows
on 1080p content), which makes no sense whatsoever.

Instead, relax clamping constraints such that the ref MVs are allowed
to point to blocks exactly outside the visible edges in both Y as well
as UV planes, including the 8tap filter edges (that's why the offset is
8 pixels + block size).

See issue 1037.

Change-Id: I2683eb2a18b24955e4dcce36c2940aa2ba3a1061

See issue 1040 point 5.

Change-Id: I51a70b9eade39efba392a1457bd70a3c515525cb

This has various benefits:
- simplify implementations because we don't have to switch between
  multiple probability tables depending on frametype
- allows fw subexp and bw adaptivity for partitions/uvmode in keyframes

See issue 1040 point 5.

Change-Id: Ia566aa2863252d130cee9deedcf123bb2a0d3765

Locate them (code-wise) in frame_context, and have them be updated
as any other probability using the subexp forward and adaptive bw
updates.

See issue 1040 point 1.

TODOs:
- real-world default probabilities
- why is counts sometimes NULL in the decoder? Does that mean bw
  adaptivity updates only work on some frames? (I haven't looked
  very closely yet, maybe this is a red herring.)

Change-Id: I23b57b4e5e7574b75f16eb64823b29c22fbab42e

to make meaning of color_range obvious.

Change-Id: I303582e448b82b3203b497e27b22601cc718dfff

allows controls to be tested for at compile-time

Change-Id: I1cd01287dc144392956c82e6dbac003f37703039

Adjust the qp threshold and consec_zeromv threshold for
limiting cyclic refresh. Also increase the refresh period
when the limit amount is significant, and some code-cleanup.

Small gain in PSNR/SSIM metrics: ~0.25/0.3 gain on RTC set, speed 7.

Change only affects non-screen content.

Change-Id: I1ced87a89a132684c071e722616e445b2d18236a

This portion was tested to have no effect on asan test failures.

Change-Id: I3de1dab7479148bdffc24c4568cb2e7e9963f099

Fix a couple of memory related errors. Also fix thread test failures.

Change-Id: I0103995f832cecf1dd2380000321ac7204f0cfc0

Adjust the qp threshold based on the denoising setting; not allow
to scale directly from original resolution to one half and vise versa.

Change-Id: I032a9b22f8e1c88de6bb81cf8351367223a3e40d

Put the reset at the right place, during the setup and prior
to updating the map.

Change-Id: I75e550ae9d8cc15081330b8857edc04c23947875

For the re-encoding (at max-qp) on the detected high-content change:
update rate correction factor, reset rate over/under-shoot flags,
and update/reset the rate control for layered coding.

Change-Id: I5dc72bb235427344dc87b5235f2b0f31704a034a

Change-Id: Ifd6581c1bdb8d8f4b2ecf676c1a3d385dc129abf

Change-Id: I57865e9604ac162ef0d97deb16e81ca436a98428

Canonical builtin checks for clang are to use
__has_builtin. Much less fragile than version checks.

https://code.google.com/p/webm/issues/detail?id=1082

Change-Id: I8151fb75899acdf1a935c23aad9441da99a9abcd

Also use the _mm_broadcastsi128_si256 intrisic for
Apple clang versions 4.[012]

https://bugzilla.mozilla.org/show_bug.cgi?id=1085607
https://code.google.com/p/webm/issues/detail?id=1082

Change-Id: I6bc821d8163387194ef663e94bfed91fa7281d88

Changes to the breakout behavior for partition selection.
The biggest impact is on speed 0 where encode speed in
some cases more than doubles with typically less than 1%
impact on quality.

Speed 0 encode speed impact examples
Animation test clip: +128%
Park Joy:  +59%
Old town Cross: + 109%

Change-Id: I222720657e56cede1b2a5539096f788ffb2df3a1

Change-Id: I0d7ca20bdd0fc868b28b0755e3114a4499056f45

Change-Id: I761256a8100d83abf1b937f3739580237e3fad2a

The setting of svc->spatial_layer_to_encode was missing
in VP9E_SET_SVC_LAYER_ID.

Change-Id: I015b1a64adb9ef2644d6477a02d9d9364c8462b9