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This improves coding performance of speed -5 and -6 by 0.6%,
respectively.

Change-Id: Ic5a7746a88c73285f0b14333d35dc16b02152c25

Reduce the scope of function parameters.

Change-Id: Ifef2cfb559908a97498ffdbd6ea53da1cd45a73c

This commit makes the inter prediction buffer system to support
hybrid partition search. It reduces the runtime of speed -5 by
about 3%. No compression performance change.

vidyo1 720p 1000 kbps
11831 ms -> 11497 ms

nik 720p 1000 kbps
10919 ms -> 10645 ms

Change-Id: I5b2da747c6395c253cd074d3907f5402e1840c36

Adaptively adjust the mode thresholds after each mode search round
to skip checking less likely selected modes. Local tests indicate
5% - 10% speed-up in speed -5 and -6. Average coding performance
loss is -1.055%.

speed -5
vidyo1 720p 1000 kbps
16533 b/f, 40.851 dB, 12607 ms -> 16556 b/f, 40.796 dB, 11831 ms

nik 720p 1000 kbps
33229 b/f, 39.127 dB, 11468 ms -> 33235 b/f, 39.131 dB, 10919 ms

speed -6
vidyo1 720p 1000 kbps
16549 b/f, 40.268 dB, 10138 ms -> 16538 b/f, 40.212 dB, 8456 ms

nik 720p 1000 kbps
33271 b/f, 38.433 dB,  7886 ms -> 33279 b/f, 38.416 dB, 7843 ms

Change-Id: I2c2963f1ce4ed9c1cf233b5b2c880b682e1c1e8b

This commit changes to allow the usage of golden reference frame in
VP9 CBR mode to improve quality. VP9 supports potentially up to 8
reference buffers, it has reference buffers available for this
purpose. This was not possible in VP8 as golden and alt-ref buffers
were used for temporal scalability purpose in CBR mode in WebRTC.

For frames that update golden frame, there can be a quality boost.
The amount of allowed bitrate boost can be controlled via parameter
rc_max_inter_bitrate_pct. The inital value of the boost ratior is
currently based on over_shoot_pct. Further experiments will work
out the adaption of this boost value.

Change-Id: I0c5f010c8fd8b7b598f69779c1b30e5b2ac30a4d

Make the common tile info as one element in the encoder tile data
struct.

Change-Id: I8c474b4ba67ee3e2c86ab164f353ff71ea9992be

Use per tile threshold in the prediction mode search process.

Change-Id: I6c74ee5a3b069bb4281002dfe51310911a0756c0

To outside the loop to avoid repeating the operations.

Change-Id: I66c1986e98ce0d7594caad3d3b45de655b299bff

This improves the compression performance of speed -5 by 0.6%. The
speed impact is less than 1%.

Change-Id: Ie77daa561976dfc8b479061e1221bdf428eb0c3b

The initialization of this_mode_pred does not work when the ref_frame
loop ever goes beyond LAST_FRAME. This commit fixes the subtle issue
and allows potentially expanding the loop to test GOLDEN_FRAME.

Change-Id: Ibbd427a22160d1d9eacb8ed0c87f88d6cef9c0f3

This commit refactors the rate distortion structure used in the
non-RD coding mode and saves a few RDCOST calculations.

Change-Id: I62c3416c300d2c5372f21b96d93a6b633a34ab3a

INTERP_FILTER; Modify the macro ADD_MV_REF_LIST and
IF_DIFF_REF_FRAME_ADD_MV.

Change-Id: Ic36c9eb6ccb8ec324d991f7241e42b40b60b1dcb

Reduce the intra_cost_penalty for non-rd mode,
and some updates to VAR_BASED_PARTITION.

Visual tests show some improvement at Speed 6, for RTC clips.

Change-Id: If9090daf7aed14906a32d931a538ab544bbca606

Uses highbd_ prefix convention consistently.

Change-Id: I58f7f799a7ff8e32701bcd71c955bcf1cdd4581e

- Some fixes to surface fit.
- Returns variance function as cost rather than sad in the
  pattern search and diamond search functions. Only
  vp9_pattern_search_sad function used in bigdia search
  uses sad as integer 1-away costs.
- Deploys SUBPEL_TREE_PRUNED_MORE for speed 4+.

Results:
derf [Speed 3]: About +0.036% in coding efficiency without any
discernible speed loss.
derf [Speed 4]: About 2-3% faster at -0.199% loss in coding efficiency.
derf [Speed 5]: About 3-4% faster at -0.149% loss in coding efficiency.

Change-Id: I8462f94f6adb46966ca964f2bd0400977357fd63

The concept:

There's too much noise in source pixels for variance and at low bitrate
the reconstructed looks nothing like the source so we have problems
getting good partitionings with either.   This skirts the issue by using
a box blur scaled down version for variance calculations.  To compare
against source_var_ moved keyframe to be rd based like source_var.

Change-Id: Ie3babdbfadae324b7b5a76bea192893af27f0624

Change-Id: If0ea98aa139d14d40cd924114e18396aff36b5a5

The functions b_width_log2 and b_height_log2 only do direct
table fetch. This commit unifies such use cases by using the
table directly and removes these functions.

Change-Id: I3103fc6ba959c1182886a2799d21b8b77c8a7b6b

Change-Id: I6f67b171022bbc8199c6d674190b57f6bab1b62f

mi_grid_* are arrays of pointer to pointer. They save the pointers that point
to the MIs in cm->mi. But they are unnecessary and complicated. The original
goal was to remove MODE_INFO_t copy. But with an extra MODE_INFO_t pointer
inside MODE_INFO_t, same goal could be achieved.

This commit totally removes the mi_grid_* structures. But there are still
many dummy MODE_INFO_t inside cm->mi which are a waste of memory. Next commit
will do on-demand MODE_INFO_t allocation in order to save these memories.

Change-Id: I3a05cf1610679fed26e0b2eadd315a9ae91afdd6

Adds various high bitdepth quantization functions.

Change-Id: I36fc0bf75a1bd15128ed271df8723de0ac134b0c

Change-Id: I4c74dcab6358817f03d3bc4d526006d241f0c10e

Change-Id: Ifbfc142291697a1847ef85ced0b0eb4d6dab161e

Change-Id: I2450b4856e48dbc4d5b938b2edcea0704f756c8e

+ delete a dead comment

Change-Id: Ibdb07f6dbdb30fc7888f6115ddc326fcec1157a7

Change-Id: I3737772fe53f9885c82e2ac4c1af478ab951c16c

the previous return value was constant and unused.

Change-Id: Ic3be55edb4a884448c7bb07977a80dfb58b7b940

This commit allows the encoder to store outcomes of single reference
frame modes and compares them to decide if the inter prediction
filter, forward transform, and quantization can be skipped.

The compression performance of speed 3 is down
derf  -0.364%
stdhd -0.198%

For test sequences, the speed 3 runtime is reduced
highway CIF 100 kbps, 51976 ms -> 45033 ms, 13% speed-up
stockholm 720p 1000 kbps, 71826 ms -> 67838 ms, 5.5% speed-up
pedestrian 1080p 2000 kbps, 154924 ms -> 150702 ms, 2.6% speed-up

Change-Id: I5aa26f918d2b4b5197a2c0afa2779319f1c88e44

Change-Id: Iac4775ad98e988f2b9cf5bd0dc91ab994d0262ce

Updates the vp9_pattern_search function to return integer one-away
neighbors' sad values, for subsequent use in speeding up the
sub-pel search. Also, removes code for the do_refine option
which is not being used currently.
Updates the integer and subpel functions to pass in a 5-element
sad list for output or input.

A new pruned sub-pel search algorithm is implemented that uses
the sad returned from the integer pel search. But it is not
deployed yet.

Change-Id: Ifa9f5ad024b5b660570366d2bd900343e1891520

Change-Id: Ic39cc0deafb3ed509434d3d9953b99713de7394a

Don't intra transform blocks past the edge of the image.

Change-Id: Ib8de6901ea339f352f6a7c9cd2af64aa2f55fa8a

Change-Id: Ia023a49ddb606899171ff19f9e271ec8ed0b2fb3

Change-Id: I4906043ec1e3577ba37622a235c54adacb66125a

This was shadowing the use of error_resilient_mode, but with
the opposite sense.

Change-Id: Ie4d30263a304fe4b3e94f0c7741db6888cc6afd8

Change-Id: Ieae182d72d625d0d3fd4ed7c7d24cb521a0f21b0

Change-Id: Iefcf0a25aaf5e44e8e791839aa82d876555025e0

The get_chessboard_index() used to call the entire VP9_COMMON
struct pointer to retrieve the chessboard pattern index. This cl
makes it call the frame index directly.

Change-Id: I3cad9d209ea2e77a358085a04fe1ff0ddec5ba03

This should prevent confusion with the VP8 CONFIG_TEMPORAL_DENOISING and other
flags.

Change-Id: I1fe4e2977895b7966841d861ab74317ad875b6c8

In vp8, statistics are collected about the different modes as they are searched.
This process is more complicated due to the variable block size. Fields were
added to the PICM_MODE_CONTEXT struct to hold this information for each point in
the search. The information is then taken from the appropriate part of the tree
during denoising.

Change-Id: I89261ab77ad637821287ae157dfdf694702b8e77