Added structures to support independent rd thresholds
for different block sizes (and set experimental block
size correction factors).
Added structure to to allow dynamic adaptation of thresholds
per mode and per block size basis depending on how often
the mode/block size combination is seen (currently fixed factor).
Removed some unused variables.
TODO
- Adaptation of thresholds based on how often each mode chosen.
- The baseline mode values could also be adjusted based on
the block size (e.g. for a particular intra mode use a low threshold
for 4x4 prediction blocks but a relatively high value for 64x64.
Change-Id: Iddee65ff3324ee309815ae7c1c5a8584720e7568
This avoids encoding tokens for blocks that are entirely
in the UMV border. This changes the bitstream.
Change-Id: I32b4df46ac8a990d0c37cee92fd34f8ddd4fb6c9
This commit makes the coding/reconstruction operations of intra
coding rate-distortion loop for UV components consistent with those
of the encoding process.
key frame coding gains:
derf: 0.11%
stdhd: 0.42%
Change-Id: I8d49f83924a320e3689ef2d60096c49d7f0c7a40
Adds backward adaptation and differential forward updates of switchable
interpolation filter probabilities. Also adds some cosmetic cleanups
and minor fixes on mv_ref probabilities.
derfraw300: +0.353% (with most coming from switchable interp changes)
Change-Id: Ie2718be73528c945fd0d80cfd63ca2d9cb3032de
This commit makes operations of the superblock intra coding rate
distortion optimization consistent with those used in the encoding
process. Given the test prediction mode and transform size, the rd
optimizer encodes and reconstructs each transformed block of the
superblock consecutively, then computes the total rate-distortion
costs accosicated with the current superblock to select the coding
decisions.
It achieves coding performance gains:
derf 0.353%
yt 1.111%
Change-Id: I0da2eb7a71361dfb8c1384927fc536b0c2790d07
Enable iterative motion search for compound inter-inter prediction
of block sizes 4x4/4x8/8x4 only when best coding quality is selected.
The iterative motion search provides about 0.1% gains for derf and
stdhd at this point, at the expense of longer runtime.
Change-Id: Idc03e7f827e51f1bb8d269bc3752ee297a6bbfe5
Migrates costing changes/fixes from the rebalance expt to the head
without the expt on.
Rebased.
Change-Id: I51677d62f77ed08aca8d21a4c9a13103eb8de93f
Results:
derfraw300: +0.126%
This speed 1 - uses variance threshold stolen from static-thresh
to determine split. Any superblock with greater than the variance
set by static thresh * quantizer index squared is split. In addition
transform size is set to largest size less than or equal to partition
size, sub pixel filter is set to normal, and only 12 modes are used
at all.
Change-Id: If7a2858ee70f96d1eb989c04fd87a332b147abef
We leave it in rdopt.c as a local define for now - this can be removed
later. In all other places, we remove it, thereby slightly decreasing
the size of some arrays in the bitstream.
Change-Id: Ic2a9beb97a4eda0b086f62c039d994b192f99ca5
It remains as a local define in rdopt.c so we can distinguish between
split and non-split modes in the RD loop, but disappears outside that
scope in the codec.
Change-Id: I98c18fe5ab7e4fbd1d6620ec5695e2ea20513ce9
