For non-SVC 1 pass CBR: make the GF update interval a multiple of the
cyclic refresh period, and use encoding stats to prevent GF update at certain times.

Change-Id: I4c44cacc2f70f1d27391a47644837e1eaa065017

The return value from vp9_compute_qdelta_by_rate, which is
a delta value for the quantizer, could never be 0 if
(qindex == rc->worst_quality).

This occurs because target_index was setup unconditionally
in the loop and yet the loop counter stopped at
(rc->worst_quality - 1).

Change-Id: I6b59cd9b5811ff33357e71cd7d814c5e53d291f2

Change-Id: I56b0614154408e8ec613784b2007374df00fbf17

When golden reference frame is refreshed, the next frame has both
its last and golden reference frames point to the same reference
frame in real-time coding mode. Experiments suggest that using
two separate reference frames for frames right after golden refresh
frame does not provide further compression performance advantage.
This commit hence retains the current encoder implementation and
shuts off the mode search over golden reference frame in this case.

It makes the encoder run slightly faster at no coding performance
change.

Change-Id: I1561f7799253a10e675d05c63c1749fe9e85b472

Force 64x64 partitioning when a whole superblock is SEGMENT_LVL_SKIP. This
drops encode times of screens mostly at rest by 20%.

Change-Id: Ieba554b0b8a0c1679aae784a8bd11f038ab942c3

Change-Id: I619a2be502f1d2eb0ae746f7fcb465d19ddae048

While turning on "--aq_mode=3", the quantizers are updated by each
thread. Fixed the me consts initialization function to make sure
that the correct thread data are updated.

Change-Id: Ied27bb7bae76fc3fa2cda4f8c35ac0b46271bef4

Change-Id: I1f2e077af87d29b07eaf7acaec8d955e00da9333

Change-Id: Iddf098e1bae9c10fc2f325f84156f50a0bd0055a

Change-Id: I794e8b64f26ebe68d7f18c3a11cb7c80e1cd3110

While searching for the best mode in non-rd case, SSE of
a partition block is calculated and the transform size is set.
This patch rewrites the skip checking conditions based on
transform size instead of partition size to be more precise.

Small gains were seen in rtc set borg test (speed 6).
AVG PSNR: 0.087%, overall PSNR: 0.073%, SSIM: 0.146%.
No noticeable speed change.

Change-Id: I5603ca5339c784dfa02263f4005988ccd8c32f6e

* changes:
  Prevent invalid memory access
  Use correct bsize for uv

Change-Id: Iecce685a33b64844446c0009f21bc85566d7469f

Change-Id: I1b972c945274254d896d772d859840b2f8211b4f

* changes:
  Call encoder control before running ethread test.
  Don't copy thread data for the main thread.

The first value of video->frame() is 15 because of the source range used.

Change-Id: I219c287b500fa376160d6dcfb937092e577ec959

Reducing these values from 100 makes rate control tighter by
default.

Change-Id: I979409c93e6f19e128898f08ad581bf67eb0f824

It was tiny when it was orginally marked INLINE. Forcing this function
to be inlined prevents the compiler from inlining its much smaller
callers.

No measurable speed impact, 28320 byte smaller libvpx.a

Change-Id: I6bf4c917157d15cbadb3cd3e20a9e82d35dc7d6f

Change-Id: Ic82b039a3d42f9aa01b85a3a69facfaa84b43a53

Change-Id: I6adee6704cacfeae0ed0b217a91095457d1be74a

Change-Id: I040b066fdce08e2f05115a22ea808715aa147779

Change-Id: I9c897d32af6c3a956bb6f424a74c12737727038a

Visual Studio is exceptionally picky about this:
vp9_reconintra.c(900): warning C4113: 'void (__cdecl *)()' differs in
parameter lists from 'void (__cdecl *)(void)'
[.build-x86_64-win64-vs10\vpx.vcxproj]

Change-Id: I564c7415f4608fd962be8c699d6133a996b545f7