Change-Id: I9b8f9a3f4fa9d48695149dd68ecb5e8d84accafe

Change-Id: Ib64edeb58b3e25488fb85bbe85c9decb15b4d0a1

Calculate the difference variance between last source frame and
current source frame. The variance is calculated at 16x16 block
level. The variances are compared to several thresholds to decide
final partition sizes.

An adaptive strategy is implemented to decide using
SOURCE_VAR_BASED_PARTITION or FIXED_PARTITION based on motions
in the video. The switching test is done once every
search_type_check_frequency frames.

The selection of source_var_thresh needs to be investigated
further later.

RTC set Borg test showed 0.424% overall psnr gain, and 0.357%
ssim gain. For clips with large enough static area, the
encoding speedup is around 2% to 15%.

Change-Id: Id7d268f1d8cbca7fb8026aa4a53b3c77459dc156

This commit allows the non-RD mode decision flow to  select
prediction filter type in NEWMV mode. It provides 8.14% compression
performance gains in both settings of AQ=0 and 3. The current speed
impact is about 5% to 10% slower.

Change-Id: Id66ecebf77abd8f90fb3f6a066c0e8dfb4bf1c42

Adds some high-level hooks for profile 2 before further
progress on the implementation.

According to the definitiion in this patch:
1. Profile 2 only supports 10 or 12 bit color but not 8
2. Profile 2 supports all color sampling modes: 444, 422 and 420,
and alpha plane.
3. Profile 3 is currently undefined.

Please consider the definition carefully and suggest modifications
to the definition as needed.

Change-Id: I5b284fc679e54ac5aee171af72fa7994cfd28995

Change-Id: Ib3b3864a6018c62ac1ea18e30795af74464596cd

Change-Id: Ie5723690f7c0bfa29a7ccef5da0c6c6326600ee6

There was a bug with the decoder that if you started the decoder
with more threads than the first frame had tile columns. Afterwards
tried to decode a frame with more tile columns than the first frame,
the decoder would hang. E.g. run vpxdec --threads=4. The first frame
had two tile columns, then the next key frame had 4 tile columns, the
decoder would hang. If you started with 4 tiles and switched to 2
tiles the decoder would be fine. The issue is that the worker the thread
loop is using is stale.

I added a test vector "vp90-2-14-resize-848x480-1280x720.webm" that
exhibited the bug.

Change-Id: I7bdd47241a52ac0fe1c693a609bc779257e94229

Change-Id: If8044d9c71afe02ed1e6c94487344e143bdfcd74

Change-Id: Ieb9b455b8aaef9884391021b7f640ef24c554687

Change-Id: I512f2a287dd8765879a2d1144e2f028dc65f71ff

Change-Id: I0816ec12ec0a6f21d0f25f10c214b5fd327afc6c

Change-Id: Iad4002d7aecaae0e25d88e286bacde7e6cd7264f

Change-Id: I9c5f7edc2d5d1ec5aee396b87bdfc99ee21c435a

Copy up to a certain bsize, otherwise set to a fixed bsize.
This helsp to reduce artifact near moving boundary caused by full partition
copy without checking motion of super-block.
This artifact can occur at speeds 3,4 in real-time mode.
Issue: https://code.google.com/p/webm/issues/detail?id=738.

Change-Id: I05812521fd38816a467f72eb6a951cae4c227931

Change-Id: I5a65d6fdb27516aefda0473ac45b05186cf0913c

Change-Id: Iab3effc39064f265426c82b455ef38d37dcce5a8

Commit introduced the leak: "Removing XMA legacy from VP9 code."
I5e9dfc50b6312848df8c3b8276f6b4d0c7ff9cf9

Change-Id: Ia1f91bb8403bef340de9f089fa78b3fccc3e9917