Use the same rounding method that is used throughout the codebase,
where the halfway value is rounded up rather than down.
Change-Id: Ie969ed7eb9fcc88a93a90c7e274fd82f336c7e4d
Increases number of wedges for smaller block and removes
wedge coding mode for blocks larger than 32x32.
Also adds various other enhancements for subsequent experimentation,
including adding provision for multiple smoothing functions
(though one is used currently), adds a speed feature that decides
the sign for interinter wedges using a fast mechanism, and refactors
wedge representations.
lowres: -2.651% BDRATE
Most of the gain is due to increase in codebook size for 8x8 - 16x16.
Change-Id: I50669f558c8d0d45e5a6f70aca4385a185b58b5b
The amount of border extension needed in the first stage inter
filtering is decided by the length of the second stage filter
kernel.
Change-Id: Icddbc58c02234d5df09ff0eeebcf166ffe689203
- Tx_type: DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST.
- Encoder overall instruction count drops 2.91%.
- Decoder overall instruction count drops 1.01%.
- Add unit test to test bit-exact result against C.
Change-Id: I908c9e0e5106c58f67dd72d28760e6c9ce54278e
Improves performance by 0.2%
lowres: -2.052% BDRATE
Also increases precision of the shift parameters (for further
investigation into different wedge shifts).
Change-Id: I59fcab9baa002e52a6487ed8d617185840a678ed
Weighted single motion search is implemented for obmc predictor.
When NEWMV mode is used, to determine the MV for the current block,
we run weighted motion search to compare the weighted prediction
with (source - weighted prediction using neighbors' MVs), in which
the distortion is the actual prediction error of obmc prediction.
Coding gain: 0.404/0.425/0.366 for lowres/midres/hdres
Speed impact: +14% encoding time
(obmc w/o mv search 13%-> obmc w/ mv search 27%)
Change-Id: Id7ad3fc6ba295b23d9c53c8a16a4ac1677ad835c
NEW_QUANT allows bin widths to be modified as a factor of the nominal
quantization step size. This adds functions to get dequantization
values based on the dequantization offset and 3 knots for a single
quantization profile.
Change-Id: I41f10599997e943cb3391c7a0847d8485b9d8b43
Improves speed by about 10-15% by combining y-only rd with
modeling function in a better way.
Also, coding efficiency improves by about 0.1%
lowres: -1.805% BDRATE with ext-inter
Change-Id: I6ef1f8942ec6806252f3fcf749ae4f30dffe42b1
When not using ext-tile, there were still dependencies between tile
rows due to various tools (eg intra predictors) relying on the above
row or above mode info, which can be in the above tile. This is now
broken (the same way as it was when ext-tile is enabled) by fixing
the appropriate predicates.
Change-Id: I107dd0d8481775a792f14e05cfbbd761f16cdc1e
When constructing the intra predictor for rectangular interintra blocks,
the last row/column of the first square is copied back into the source
image (which is the current reconstructed image buffer) before
predicting the second square. The code used to use the height instead
of width for vertical rectangles, and vice versa for horizontal
rectangles, leading to overwriting the block on the right/below. This
leads to an encode/decode mismatch if the right/below block is in a
different tile and is encoded before the current block, which did happen
with multi-threaded encoding tests. This is now fixed.
Change-Id: I073a2a447a98b842b1394d72cc774a78cb296921
This change has no performance impact. It prepares the proper
function interface for better performance optimization.
Change-Id: I12e2f2deaf7f3adc603de0a74852116468c762f6
In VP10, REFRESH_FRAME_CONTEXT_OFF mode is only set when the error
resillient mode is on. Instead of being used to decide how to update
the frame contexts, it is used to decide if or not to reset the
frame contexts.
To verify, ran borg test on lowres set. The result is neutral.
Overall PSNR: -0.006%; SSIM: -0.006%.
Change-Id: Ic48265cf7488e80c6f5aab3eef7ba1c273506419
- Tx_type: DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST.
- Update vp10_fht16x16_test.cc to do bit-exact test against
latest C version.
- HBD encoder speed improves ~1.8%.
Change-Id: Icfc799a212e5289bcf6cedcae3722032133a2bc6
This commit fixes the compiler error in high bit-depth inter
predictor when dual filter type experiment is turned on.
Change-Id: I404a76a246477f2fcffc38a3275007d5dfe229cd
Make the bit-stream level support per direction filter type coding
for motion compensated reference.
Change-Id: I61a2360b301075f6734cfd9711b7ae68f214174d
The word 'pick' is usually used in functions that make decisions where
the bitstream allows multiple legal choices, and not to limit the
bitstream format itself.
Change-Id: Ia60709c29e004475e1aa8861aefded27ebaf4712
Geza Lore
Angie Chiang
Jingning Han
Yi Luo
Debargha Mukherjee
Yue Chen
Sarah Parker
Yaowu Xu
Yunqing Wang
Alex Converse