Fix 1: in ext-inter + obmc config, properly identify if the left
predictor used for obmc is a compound one in the case that the
neighbor uses wedgeinterinter pred and we will dump the ALTREF part.
This will fix the seg fault in unit test:
VP10/AltRefForcedKeyTestLarge.Frame1IsKey/0
Fix 2: in ext-tile + obmc experiment, handle the case that the
above block does not fit in the same row tile with the current one,
so as to prevent potential crashes.
Change-Id: I1c177d4f4ad15e10d11d8756e146496437753eea
- Tx_type: DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST.
- Update bit-exact unit test against current C version.
- HBD encoder speed improves ~3.8%.
Change-Id: Ie13925ba11214eef2b5326814940638507bf68ec
Removes integer divides from backward updates for VP10.
Currently this is put in as part of the entropy experiment.
Coding efficiency change is in the noise level.
Change-Id: I5b3c0ab6169ee6d82d0ca1778e264fd4577cdd32
Remove the restriction that the neighboring predictor cannot be
used in obmc prediction if it is an interintra or wedgeinterinter
block. The inter predictor of the interintra block, or the first
inter predictor(using LAST or GOLDEN frame) of the wedgeinterinter
block will be exploited in obmc prediction.
Coding gain: 0.248% (2.833%->3.081%) lowres
Change-Id: I4ac0368b9d2f2956f266b30c1ac97db8bafa0742
This commit enables 1/8 luma component motion vector precision
for all motion vector cases. It improves the compression performance
of lowres by 0.13% and hdres by 0.49%.
Change-Id: Iccfc85e8ee1c0154dfbd18f060344f1e3db5dc18
Reduce transform set for intra for 8x8 and smalller to 7 from 12.
Also fixes an issue with prob updates.
Enocder Speed-up about 8-10%
Coding efficiency very little change.
lowres: -2.996 (from -3.055 before)
midres: -2.482 (from -2.552 before)
Change-Id: I4ba50ff967521b33c748fe423bd92f7cf4105ebc
MMX and X87 floating point instructions cannot be mixed freely on
the 32 bit x86 architecture.
This fixes a lot of unit tests in the 32bit build with
--enable-ext-intra.
BUG=https://bugs.chromium.org/p/webm/issues/detail?id=1196
Change-Id: I0e1c3565f4b9cb4fc2d716e94d9c40e68b36fac8
- Optimization on tx_type: DCT_DCT, DCT_ADST, ADST_DCT, ADST_ADST.
- Overall encoder speed improves ~4.5%-6%.
- Update bit-exact unit test against current C version.
Change-Id: If751c030612245b1c2470200c9570cf40d655504
This commit fixes an out-of-bound memory access case in the
loop filter mask setting. This issue was introduced in
10232ed Refactor loopfilter level arrays to 2D.
https://chromium-review.googlesource.com/#/c/336645/
Change-Id: I7101a4a79b9ecfdd8ec5ef13a0b314cc95f48d12
Unit test shows manually developed SSE4.1 code would performs ~30%
better if TXFM_2D_CFG configuration is set in lower level. This
change only updates function signature. There is no performance
impact.
Change-Id: I62692bd50a21ffc8a944bbd6c155c0a2020ad77b
This will facilitate bringing the zero node into the token set while
allowing its probability to vary independently.
Change-Id: I57b44c0fce44debb8e612021e44713b229d1b3cf
This commit handles the zero motion vector residuals for single
and compound reference modes, respectively. It improves the coding
performance by 0.13% with no additional encoding complexity.
Change-Id: I16075a836025bd2746da2ff4698fb9261e4b08c1
We removed this adaption, which intended to reduce the size of
overlapped region if the neighboring block is a non-skip one. Thus,
now the width/height of the overlapping region is fixed as a half of
the current block.
Performance improvement (lowres/midres): 0.111%/0.102%
Change-Id: Ife75dad9d4eb355c78a05178b50cc015c442884f
In the rd loop, check the perf of obmc, whose mv is copied from regular
inter predictor, when wedge interinter is better than regular inter
(previously it will force allow_obmc = 0). The condition of the early
termination before this step is relaxed to avoid skipping too many obmc
predictions. The rates of the overhead are properly calculated for these tools.
The logic of the bitstream syntax:
(a single ref) the interintra flag is sent first, only if it is 0, we
send the obmc flag;
(compound refs) the obmc flag is sent first, only if it is 0, we send
the wedge interinter flag
Coding gain
lowres: 0.428% (2.287%->2.715%)
Change-Id: I5f3a34640b398e313cbf84235c9fe2073eb2173f
