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For reference frames: enable scale partition for
superblocks with low source sad or if bsize on lower-resoln
is at least 32x32.

Keep feature disabled for base temporal layer.

Small regression in avgPNSR/SSIM metrics, ~0.5-1%.
Speedup ~2-3% on mac for SVC (3 spatial/3 temporal layers) at speed 7.

Change-Id: I5987eb7763845b680059128b538bb5188be0cca5

Enable partition copy on boundary and scale blocks along the boundary.
Rename copy_partition_svc to scale_partition_svc.

Do not copy if the block crosses the boundary.

Change-Id: I37a04d48f11b15c4ea67facd7631193ec2f62150

Fix/cleaup the conditioning for usage of the reuse-lowres
partition feature.

Replace the non-reference condition with the top temporal
layer, and put this condition in the speed feature.

This prevents doing update_partition_svc() on every
VGA frame, instead it will now only do update for VGA in
the top temporal layer frames.

Also this makes it easier to test/enable this feature
for lower layer temporal frames.

Change-Id: Ia897afbc6fe5c84c5693e310bcaa6a87ce017be5

For new VP9 only content type adjust  the rate distortion and ARF
filter based on the relative spatial variance of the source and
reconstruction.

In regards to the RD loop the method favors modes where the
reconstruction variance is similar to the source variance. However it
is currently only applied to regions where the source variance is quite
low.

For very low variance blocks it applies a further bias against intra
coding and large prediction block sizes (the later in particular limit
the usefulness of the loop filter).

The final part of this change is to lower the strength of the ARF
filter for blocks where the source has very low spatial variance, to
encourage some low amplitude texture or noise to pass through
the filter.

This change improves the retention of film grain and fine noise /
texture in spatially flat regions, but as expected causes a significant
drop in PSNR on many clips. This is to be expected because similar
but misaligned noise or texture will give a lower PSNR than a flat
noise free reconstruction. However, it is worth noting that most clips
show a strong gain in FAST SSIM.

The features are enabled on the vpxenc command line by setting
--tune-content=film.

VPX_ENCODER_ABI_VERSION bumped for this change and cvbr.

Change-Id: I26a4e4edfa3dc5cacead82fa701fe7a9118ccd0a

For choose_partitioning (speed >= 6): avoid computation
of minmax variance for non-reference frames in SVC.

Existing condition only avoided this for speed >= 8.
Combine that existing logic with non-reference condition.

Small speedup (~0.5-1%) for 3 layer SVC,
neutral change on avgPSNR/SSIM metrics.

Change-Id: I3e9f3a1af0647b15e475cf170d9402908d672ee5

For SVC with 3 spatial layers:
Add feature to copy/upscale partition from middle spatial layer
to the upper/highest resolution, when superblock sad is not high.

Enabled for speed >= 7 and only for non-reference frames.

Speedup ~3-4%, small loss in avgPNSR/SSIM of ~1%.

Change-Id: I7f0a2716c0fde28bade0f86159d11b7e31d6ab8d

Allow for compound prediction mode in nonrd_pickmode for ZEROMV.
For real-time encoding, 1 pass with non-zero lag-in-frames.

Added speed feature to control the feature.
Enabled for speed >=6 for now, under VBR mode.

avgPSNR/SSIM metrics positive on ytlive set, for speed 6:
some clips up by ~3-5%, some clips neutral gain, average gain
across clips is ~1%.

Small/negligible decrease in speed.

Change-Id: I7a60c7596e69b9a928410c5ee2f9141eecd8613d

Remove the memory deallocation on the early exits.

Change-Id: I00b4a814ae6705105ecab89644d055ca3311d9f4

Move vt2 to heap.
Reduce the stack usage from ~87K to ~44K.

BUG=b/68362457

Change-Id: I8f5f93712934d59a8cc4564378172d409a736a2e

Change type of sum_square_error from int64_t to uint32_t.
Change type of sum_error from int64_t to int32_t.

This reduces the stack usage from ~131K to ~87K.

BUG=b/68362457

Change-Id: I147d7c7b226bceb4f0817bb86848e1fa9d9ac149

Keyframe encoding is more than 2x faster.
Disabled on Speed 8.

Change-Id: I2157318b6ac8253fa5398322c72d98cd7fa9b2b6

For 1 pass vbr: increase min_thresh slightly, and also add
condition on golden/arf update for using full nonrd_pick_partition.

Reduces possible false detection for scene cut detection.

Neutral/small change in metrics or speed for speed 5.

Change-Id: I388f4d9a56e3cc763e0148338c1bc0381e58ad76

For 1 pass vbr speed >= 6: when REFERENCE_PARTITION is selected,
avoid doing the full nonrd_pickmode based partition.
No change in overall metrics or speed.
Reduces encode times on scene cuts by 10-20%.

Change-Id: I0310b1610cc1c83793a509e0a9059840e8f18308

For speed 6 real-time mode: use adapt_partition
on ARF frame instead of REFERENCE_PARTITION (which is slower).
This requires enabling compute_source_sad_onepass for no-show_frames.

Speedup of ~3-5% on some clips that heavily use ARF,
small loss (~0.2%) in quality on ytlive set.

Change-Id: Ib50acc97df06458244a6ac55d2bd882c30012536

Add stats for past ARF usage, and use it to disable
ARF usage based on some conditions.

Overall improvement on ytlive set, reduces the regression
on the problem clips for this feature.

Only affects when sf->use_altref_onepass is enabled
(currently off by default).

Change-Id: I66267f227ea132dc86acb730e9882f85bead2cdb

Only when USE_ALT_REF_ONE_PASS is enabled (off by default).
Force fixed partition to 64x64 when is_src_alt_ref_frame is true,
and don't force early exit for some modes in nonrd_pickmode
for ARF noshow frames.

Small gain ~0.2% on ytlive metrics for speed 6.
Neutral speed difference.

Change-Id: I27eb6622d0453c09a06ccdc3b16368762474d11d

Enable adapt_partition for vbr mode for speed 6.
This allows the usage of the pickmode-based partition
(used in speed 5), but only selectively for superblocks
with high source sad, otherwise the faster variance based
partition scheme is used.

For speed 6 on ytlive set: avgPSNR/SSIM metrics up by ~0.6%,
several clips up by ~1.5%. Small/negligible decrease in speed.

Change-Id: I12f3efef6b3e059391de330fdbe5a44c2587f1f8

For speeds < 7, increase threshold that controls the split
of 16x16->8x8 blocks, for resolutions 720p and higher.

Minor change for speed 5 (since it uses reference partition scheme
which only uses variance partition as first step).
For speed 6: ~0.5% increase in avgPSNR/SSIM metrics on ytlvie set.
No change in speed.

Change-Id: I5126580973201538d8ca26a9256b93c4d11d685b

This feature is used for the CBR RTC encoding mode
at speed >= 6. This change will exclude it for VBR mode.

For speed 6 live encoding (VBR):
avgPSNR/SSIM metrics on ytlive set up by ~1% (few clips up by 2/3%).
No change in speed.

Change-Id: I1a0dd94c334f7df309ab5a48d477d7e25355b798

When adapt_partition_source_sad is enabled (currently only at
speed 6 for resoln <= 360p): use lower subsize (8x8 instead of 16x16)
for nonrd_select_partition on 32X32 blocks.

And force avoiding rectangular partition checks in
nonrd_pick_partition for speed >= 6.

Small increase ~0.5 in metrics for speed 6 on rtc_derf,
no change in speed.

Change-Id: Id751bc8f7573634571b2d6f5e29627cd5cebccae

When the superblock partition is based on the nonrd-pickmode,
we need to avoid the denoising. Current condition was based on
the speed level. This change is to make the condition at the
superblock level, as the switch in partitioning may be done at
sb level based on source_sad (e.g., in speed 6).

Change-Id: I12ece4f60b93ed34ee65ff2d6cdce1213c36de04

This reverts commit c9266b85.

Disable source_sad when resolution > 1080P. The test should
pass now.

BUG=webm:1452

Change-Id: I72dde88e66590ff9e41da5e5dd83f5550a83f082

This reverts commit 064fc570.

This causes an assertion failure in vp9_mcomp.c when running
gtest_filter=VP9/MotionVectorTestLarge.OverallTest/41:
`mv->col >= -((1 << (11 + 1 + 2)) - 1) && mv->col < ((1 << (11 + 1 + 2))
- 1)'

Change-Id: I449e777bf18b661cb3f1d82253610c55c51687f6

Change-Id: I917d106f4c95ea44e413e23881f6303982e1a6a3

Move the source_sad feature to speed 6 (from speed 7), and
add speed feature to switch from the variance-based partition
to reference_partition (which uses nonrd-pickmode for bsize selection)
if source_sad is high.

Currently used only for speed 6 for resoln <= 360p.
About 4-5% improvement on 360p in RTC set.
Some speed slowdown, but still ~30% faster than speed 5.

Change-Id: Ib0330ee5fe9fdd2608aed91359a2a339d967491c

For 8-bit the subtrahend is small enough to fit into uint32_t.

For 10/12-bit apply:
63a37d16 Prevent negative variance

previously:
47b9a091 Resolve -Wshorten-64-to-32 in highbd variance.
c0241664 Resolve -Wshorten-64-to-32 in variance.

Change-Id: I181c85f0b9a03da37c2e8b89482d48aa3dbc0aee

When content_state_sb is set to LowVarHighSumdiff, don't reset
it to VeryHighSad. Visually better on clips with strong lighting changes.

Small/negligible change in RTC metrics and speed.

Change-Id: I20c383e3c4cf8d1149de5f9260449c0b7cf7c6aa

When int_pro_motion_estimation is done for superblock in
choose_partitioning, use it to avoid the full_pixel_search
for NEWMV mode, if bsize is >= 32X32.

For speed > 7.
Small/neutral change on RTC metrics.
~1-2% speedup on arm on high motion clip.

Change-Id: I3cfe6833ff4bf75d4afa83eaf058ad45729de85b

Only affects speed 7. Improvement on high motion clips.

Change-Id: Ibddb68fed9c63207df29ffd790f9205b1cecf687

Change-Id: Iebc9dd293d8b1449c0674c0295349297e9b90646

+ vpx_dsp/, test/

itxfm -> inv_txfm, ftxfm -> fwd_txfm

Change-Id: I3aacdb65143576d64cfe5c9b14dd358c17c1fe7e

In the content_state for a superblock is set to HighSad,
use that to bias some decisions in variance partition and
nonrd pickmde: use int_pro_motion for sad computation in
choose_partitioning, and set large_block in pickmode based
on the content_state_sb.

Only affects speed >= 7.

Immprovement for high motion content.
Small gain (~1%) in RTC metrics.
Speedup of ~5 for high motion clip on android (speed 8, 1 thread).

Change-Id: I5774c4854f012b89c8e969f6129b60988c2ce11c

txfm is more commonly used as an abbreviation through the codebase

Change-Id: I86fd90ef132468f9da270091c05daa1f5a49ece2

This could save some cycles since skin detection is used in multiple
places in vp9.

1~2% speed up on ARM.

Change-Id: I86b731945f85215bbb0976021cd0f2040ff2687c

Use it to limit NEWMV early exit in nonrd pickmode

Small change in RTC metrics, has some improvement
for high motion clips.
Change-Id: I1d89fd955e1b3486d5fb07f4472eeeecd553f67f

quiets -Wmissing-prototypes

Change-Id: I696223d75860edba13c6b6f38c1f8db353a6f812

Skin detection usage in choose_partitioning should be
around the cpi->use_skin_detection.

Change-Id: I6986179af9ce94c60c0974d66c311fc07cc04cfe

When temporal layers are used, only allow for copy partition
on the top temporal enhancement layer frames.

Change-Id: I5472abdc0f9f6c8dafa75a7a84c615e08ae22af8

Only affects speed 8.

Make changes to copy partition to fix a bug in setting microblock
offset. Avg PSNR shows 0.02% gain on rtc_derf and 0.08% loss on rtc.

Change-Id: I61c3e5914dde645331344388e7437e5638acd4f3

Increase the partition and acskip thresholds for temporal
enhancement layers.

~1-2% speedup, with negligible loss in quality.

Change-Id: Id527398a05855298ad9ddac10ada972482415627