Trap divide by 0 that could occur with a 0 rate target
in aq mode COMPLEXITY_AQ.

Change-Id: I034514f512b2a0db470ae8d37ea395278bf473cf

Change-Id: I8d17867a4772554cbba2bd113cc5b4c99d50146d

Corresponding renames:
  subpel_kernel              => interp_kernel
  vp9_get_filter_kernel()    => vp9_get_interp_kernel()
  pred_filter_type           => pred_interp_filter
  adaptive_pred_filter_type  => adaptive_pred_interp_filter
  mcomp_filter_type          => interp_filter
  read_interp_filter_type()  => read_interp_filter()
  write_interp_filter_type() => write_interp_filter()
  fix_mcomp_filter_type()    => fix_interp_filter()

Change-Id: I1fa61fa1dc81ebbf043457c3ee2d8d4515bee6d3

Reading second motion vector only when it has a second ref_frame

Change-Id: Ica72c1cd955832e15ceccda5e5a17b0bfcd83044

This commit deprecates the use of best_mv from encoding and bit-stream
writing stages. It hence removes the definition from MACROBLOCKD.

Change-Id: I8e5302775a2aa4a18900726df407bff881f2dfb1

Keep naming consistency for RD and non-RD mode decision functions,
respectively.

Change-Id: I904282b675fc511a46c13cb1f8287aa5d1c8ac94

This commit setups a test framework for real-time coding. It enables
a light motion search for non-RD mode decision purpose.

Change-Id: I8bec656331539e963c2b685a70e43e0ae32a6e9d

Calculate the skip_coeff as part of the encode process, rather than
checking the eobs after the fact with another pass.

Change-Id: Ib41b139e96a97dee30e4b993b4cc53d86337128d

Change-Id: Iac5c5aeaef62a4095a60d91285d2c7ad717db0fb

Change-Id: I6d9f595249dc71752abe16c042d3b07aa2e4248d

This commit allows encoder to compare the SAD cost associated with
the best motion vector predictor, per frame. If one reference frame
has this cost more than 4 times of the best SAD cost given by other
reference frames, skip NEARESTMV, NEARMV, ZEROMV mode check of this
reference frame.

This setting is turned on in speed 2 and above. Compression quality
change in speed 2:
derf  -0.014%
yt    -0.097%
hd    -0.023%
stdhd  0.046%

It reduces the speed 2 runtime of test sequences:
pedestrian_area_1080p 4000 kbps 310763 ms -> 303595 ms
bluesky_1080p 6000 kbps         259852 ms -> 251920 ms

Change-Id: I7f59cf79503d51836d61d56d50dc5bdf0e502e22

Change-Id: I0c42a729038d0f4cb7bc07f587d066fcb1dfe9d9

Change-Id: I064ba32d5358bfbf080a4300fc1793b345080006

Encapsulating direct references to lst_fb_idx, gld_fb_idx, alt_fb_idx.

Change-Id: I7e65ba3f131286e433e6651970c5647311fa4687

Adding RefBuffer to simplify reference buffer management. The struct has a
pointer to image data and scale factors relative to the current frame.

Change-Id: If38eb1491ff687cc11428aee339f3e052e2c5d9e

Change-Id: I1d50f8701d9c9dedb84387a773a3e9b4daaad720

Change-Id: If04b57828847cee09a79c94e1098d1aa4990ea0d

Change-Id: Ic0345622115941f49b6a568c7b8154ba892cbf0d

Moving all code from that files to vp9_mvref_common.{h, c}.

Change-Id: Ibc4afcb8cea6847166ff411130e93611ebe63b20

Moving back to scale_factors struct. We don't need anymore x_offset_q4 and
y_offset_q4 because both values are calculated locally inside vp9_scale_mv
function.

Change-Id: I78a2122ba253c428a14558bda0e78ece738d2b5b

Change-Id: I82ecbe7fe0baa890ce251043f3c7159188c00665

Change-Id: Iba91ff1e797a83517e2cd7c3ab86cba39f39415b

Replacing: intra_inter_count, y_mode_count, y_uv_mode_count.

Change-Id: I5d70f73288af6effe6176e26400138067a2ae2a3

Change-Id: Ia356178d6a3c40b512d3123390781ef94dec72d6

Change-Id: I6ab9fe2326ebbadf0dd10cca9f66cf8277e3f43b
Replacing: comp_inter_count, single_ref_count, comp_ref_count.

Various cleanups and refactoring.
Removes feedback of active worst qaulity and uses last_q
instead to make the interface cleaner. Active worst quality
is now decided only once for a frame being coded in the
beginning based on last_q and other stats. Also, adds other
cleaups on last_q to store also the last_q for altref frames,
and reduces the altref interval a little.

The output does change a little.
derfraw300: +0.224% (global psnr)
stdhdraw250: +0.442% (global psnr)

Change-Id: Ie634cdc032697044c472dd0fe79c109b3e7f9767

Change-Id: Id677df4d3dbbed6fdf7319ca6464f19cf32c8176

This commit enables an adaptive prediction filter type selection
for sub8x8 block sizes. In speed 1, it re-uses the filter type of
collocated 8x8 block if it is tested in the rate-distortion optimization
loop, for the sub8x8 blocks. Otherwise, it runs the normal test
over all the three filter types. In speed 2, it re-uses the 8x8
block's prediction filter type, if available. Otherwise, force it
to be EIGHTTAP.

Compression and speed performance wise:
speed 1
derf -0.266%
yt   -0.138%

bus at 2000 kbps: 33766ms -> 30451ms (10% speed-up)
football at 600 kbps: 48173ms -> 43786ms (9% speed-up)

speed 2
derf -0.026%
yt   +0.134%

bus at 2000 kbps: 18973ms -> 17698ms (6% speed-up)
football at 600 kbps: 26748ms -> 25096ms (6% speed-up)

Change-Id: I77e097533b969fd3472147225fa79fc98095d342

Change-Id: Iadf2fcc9a5bfa5d02fc166f31963be1cc814831c

Trying to make encode_sb() more similar to write_modes_sb() and
decode_mode_sb() because essentially all branching logic should be the
same.

Change-Id: Ib7dec7b48fce29418142abad4d1dcfdb1c770735

In evaluating partition split case, Wrong partition size is used in
calling partition_plane_context(). This commit change to use the
correct sub partition size. The incorrect partition size used were
causing an ASAN error in unit test.

Change-Id: Iab695b764bc51cc61580075f2ae4001421132362

Change-Id: I83ffed2b1878a35ac35f07f9ee74309adc9c7b11

Change-Id: Ia6d6f4dfb1fd1ec0f8ba53796b59a802e9d7881d

In lossless coding, distortion is always 0. Early exit based on this
metric was incorrect.

This CL also changed to use best_rd instead of distortion as the metric
for easly exit as requested by Jim.

Change-Id: I8ef3e407ac03b4abc3283b273f936a68fad5c2ab

Renames:
  vp9_get_pred_context_comp_inter_inter => vp9_get_reference_mode_context
  vp9_get_pred_prob_comp_inter_inter    => vp9_get_reference_mode_prob

Change-Id: I3bbb69481e6b0c848028667c9269f567f293d3bd

Renaming:
 vp9_get_pred_context_intra_inter => vp9_get_intra_inter_context
 vp9_get_pred_prob_intra_inter    => vp9_get_intra_inter_prob

Change-Id: I2c1affea2e84f4e616137c6df82adb11c7845781

Change-Id: I68d6217db6f67da15380cd59ec5eda0c44da7d34

In the decoder we don't need to save eobs, we can pass eob as an argument.
That's why removing eob arrays from VP9Decompressor and TileWorkerData,
and moving eob pointer from macroblockd_plane to macroblock_plane.

Change-Id: I8eb919acc837acfb3abdd8319af63d1bbca8217a

E.g. disable vertical partioning for 4:2:2. Until we come up with something
better to do with the chroma block size, this prevents an assert error.

Change-Id: I9394fb3f14ec1343abc3ad4769de208e6278f285

We only need qcoeff buffers in the encoder. Reducing TileWorkerData struct
and VP9Decompressor struct sizes by 24K.

Change-Id: Id148868461f7ffa3d3dd634b371503ae9c57e207