This commit enables the dynamic motion vector predictor for NEWMV
mode. It allows the codec to select the best motion vector predictor
in a rate-distortion optimization framework for motion vector
residual coding. The compression performance is improved:
lowres 0.14%
midres 0.27%
hdres 0.24%
Change-Id: I6a601c74eb6cb0b71a613336d40363359f2edecd
Eearly termination if U plane RD cost is large enough.
No notable compression performance changes.
Change-Id: Ieeefc5859cb55d94391b502b4bd840bc8bcb2578
This is a cosmetic patch that removes a great deal of conditional
compilation around CONFIG_VAR_TX from the partition search function.
Change-Id: I9dcef9d4fe6847b793c77bdf565a5cacbdfacd59
This patch added two features to improve entropy coding efficiency
for coefficient tokens.
1. Choose 1 of 4 default probability tables based on q-index for
key-frames.
It is ported from nextgen branch:
https://chromium-review.googlesource.com/#/c/280586/
2. Do backward update after each superblock (64X64) row using
subframe token counts.
Coding gain: 0.1% on lowres; 0.42% on midres; 0.36% on hdres.
Much larger gain for key-frames: 2.6%, 2.3%, 1.7%.
Design doc: go/huisu-entropy
Change-Id: Ia3b6a615636be09247d70e4c520405637561532b
This commit fixes the computation of rate_nocoef for situation when
rate_y is uninitialized at INT_MAX for x->skip is true.
Change-Id: If3dde4e4ee16667f4408067d3bb3084f916272f1
In preparation for adding more 1D variants with ADST/FlipADST/etc.
BDRATE actually improves by 0.21% on lowres.
Change-Id: I2fa4720c69fe001fa666119a284dfc6b17fffab2
Optimized 2 up-sampled reference prediction functions in high-bit
depth case. This reduced the HBD encoding time by 3%.
Change-Id: I8663ffb5234f5e70168c0fc9ca676309fe8e98f2
Instead of testing all interpfilter-BMC/OBMC combinations, we choose
the best interpolation filter based on regular inter prediction.
Reduction in encoding time: ~10%
Drop in performance gain: 0.08% lowres, 0.04% midres
Change-Id: Ifc19097a918ac76b529db9af4c60e2c70e93f7ad
Using the up-sampled reference frames in sub-pixel motion search is
enabled as a speed feature for good-quality mode speed 0 and speed 1.
Change-Id: Ieb454bf8c646ddb99e87bd64c8e74dbd78d84a50
Coding gain on screen_content is 12.2% (was 6.6%).
Some features such as frame-level color buffer, adaptive
entropy coding, are coming in future patches.
Change-Id: I2658cf5ec0cbb02cff685475759f3b68c9807697
This commit enables the hybrid 1-D/2-D transform coding scheme for
high bit-depth setting. It improves the compression performance of
ext-tx experiment by 0.98% for lowres_all set.
Change-Id: Ic27f5037f2c36b095a93b9f15dbae34bdcdf00aa
- Implemented fdst16_sse2(), fdst16_8col() against C version: fdst16().
- Turned on 7 DST related hybrid txfm types in vp10_fht16x16_sse2().
- Replaced vp10_fht10x10_c() with vp10_fht16x16_sse2() in
fwd_txfm_16x16().
- Added vp10_fht16x16_sse2() unit test against C version:
vp10_fht16x16_c() (--gtest_filter=*VP10Trans16x16*).
- Unit test passed.
- Speed improvement: 2.4%, 3.2%, 3.2%, for city_cif.y4m, garden_sif.y4m,
and mobile_cif.y4m.
Change-Id: Ib30a67ce5d5964bef143d588d0f8fa438be8901f
Pixel domain distortion calculation is enabled for the rd loop of
inter sub8x8 and intra 4x4 cases.
Coding gain: 0.124% derflr, 0.122% derfhd
Change-Id: I43b47fe81b4f5ccc1c66bc626bd310c413a1ed87
