Change-Id: I9b8f9a3f4fa9d48695149dd68ecb5e8d84accafe

Change-Id: Idf612c772440158cd1645623241c51ab0d57405c

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

Change-Id: If8044d9c71afe02ed1e6c94487344e143bdfcd74

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: Iab3effc39064f265426c82b455ef38d37dcce5a8

Change-Id: I7b2b690d2d51d55daa642be4131e5febd78cbe0a

Change-Id: Ic68caec1bcb8a88f443c3e40ce9770eade5bd320

These functions do nothing about rate control.

Change-Id: I714e80b1c1f4f9aa157a56df705247fce6db138d

ARF overlays now use the same rate correction factor as regular inter
frames, further testing would be needed to see if it makes sense to use
a completely separate rate correction factor for ARF overlays.

$ vpxenc --cpu-used=5  --fps=50/1 --target-bitrate=2000
         parkjoy.y4m -o out.webm
=> Before: 3356 kb/s
=> After: 2271 kb/s

Change-Id: I73e4defa615ba7a8a2bdb845864f4b1721cbbffe

Change-Id: If1b0a2d6603ce24f5dd99855e8dfe459e7a2835a

Change-Id: Ib3886cb7cafc211581f4f9e7f76782d9d1984434

This commit estimates the motion vector rate cost right after full
pixel motion search. It combines this and the mode cost and compares
the corresponding rate-distortion cost. If it is already above the
current best one, skip the rest sub-pixel motion search and modeling
process. For pedestrian_area 1080p at 4000 kpbs, the speed -5 runtime
goes down from 39425 ms -> 38399 ms.

Change-Id: If4cd7119fd6c266798d5cf1d19d19ab425e52a26

Change-Id: I4685706b816dd1c45500e1387c9f63edb2fa1962

Change-Id: Ie364fe837002de96923da2c1c0ff8bb4b8d469a7

Change-Id: I75ad328c6d719df81cc24f3ae21c152af4ebdacc

Change-Id: I6371ef7301c6bc3138552bd349e9bd154dee3e08

Now interp_kernel is obtained when it is really required (based on
mbmi->interp_filter value).

Change-Id: I4c7a93c179d1045eba16e7526c293d02c9b8b47e

Change-Id: I28e45870a0e3b0de3b9e40fb044789ae1209c0f7

Reinstates this macro and truns it on in order to avoid issues
due to some frames at the end starving in harder videos.
A more acceptable solution is in the works.

Change-Id: I3c46148e86fa6114e3fed245246fb3686a9e6700

This was broken by change
Icc4b66f3935fad5ec4516a4d57e843d12c365e64

Change-Id: I49e3fc525664eb7a433f55f76b8f8628fe251eab

This commit slightly increases the bit allocation for key frame. This
improves speed -5 coding performance by 2.77% with aq-mode=0 and by
2.78% with aq-mode=3.

Change-Id: Iaa3e777f80b9706306606af06e89852bac146659

Change-Id: Id79ed3b87fd6055e96738af53eb964addd0b918b

Change-Id: I47a7148bf746f61d0c4947f9b22624a8c071359f

For real-time mode under cbr, this increases the gain (5-10%)
for speed 5 (none/little change for 6), on vc-clips.

Change-Id: I9b38beeb3c820de22c43a0ba53a9456168dd24ba

Change-Id: I87b0668e23c54429a06bba85437606c4780be9ba

Turns off the DISABLE_RC_LONG_TERM_MEM macro and makes other changes
in the way the bits are updated, to make 2-pass rate control track
target bitrates closer.

Change-Id: I5f3be4b11c2908e6a9a9a1dd4fcf4e65531c44d8

Parameterize the frame level quantization index used in non-RD
coding flow with cbr.

Change-Id: I79cfbd9c32c0d0fc33ad720d2180432e910baf7a

This commit reduces the frequency of frames using finer quantizer
in non-RD coding flow, and slightly tune up the quantizer resolution
when used. It provides 1.7% compression gains in speed -5 at no speed
difference.

Change-Id: I430249a51260a841a0402666e5ec1566e4f7d5a6

The new tolerance is a little higher than before (especially
for kf/gf/arf) so this change gives an encode speed up
for some clips up for speeds 0-2.

Change-Id: I63f7d6c9cc11c7f58742f41e250dcd3eab1741eb

Change-Id: I1d8c312a599db505a023e5cd0cc4ba2b8f696a2e