* changes:
Reverse order of CLPF and dering
Refactor: read_tx_size_probs()
Fix compiling issues with --enable-ec-adapt
Fixes compilation error on Windows/Visual Studio
This commit adds simp-mv-pred experiment. The experiment is to work on
top of ref-mv experiment to save memory bandwidth and reduce the size
of line buffer needed in ref-mv experiment.
When compared to ref-mv, this experiment showed:
low-delay BDR gain: 0.03%
High-delay BDR gain: 0.01%
memory/memory bandwidth saving: 40%
local memory/gate count saving: 20%
Change-Id: Ic4006e041fc58ede411da83d0d730c464ebe1749
This commit fixes the top-right reference block location for block
sizes above 8x8. It improves the coding performance of ref-mv:
lowres 0.08%
midres 0.15%
Thanks to jiafeng@ for finding this issue.
Change-Id: I70750fc7b18bf0126d3e07abc1b63ca5a160193e
This prevents a crash if the upsample_refs speed feature is
changed as part of set_size_dependent_vars, when the recode
loop is enabled.
Change-Id: I645e389bfe961879dd2001439a34fde2993868d9
This CL will cause
0.122% PSNR drop on lowres dataset
0.059% PSNR drop on midres dataset
However, it will facilitate hardware implementation.
Change-Id: I0a0713acacbfd571509a721337711c021915dd3c
The EC_ADAPT experiment cannot work unless EC_MULTISYMBOL is also
enabled.
This patch replaces all individual checks with a centralized check in
both the bitreader.h and bitwriter.h.
Change-Id: I418852d95c5012cc074ed65cd24997e08bc2aadd
The new ec_multisymbol experiment supersedes the rans experiment and is
used for multisymbol features that can be backed by either daala_ec or
rans.
This experiment is automatically enabled by ec_adapt and will try to
enable daala_ec or ans (in that order).
Change-Id: Ie75b4002b7a9d7f5f7b4d130c1aacb3dbe97e54f
This experiment performs symbol-by-symbol statistics
adaptation for non-binary symbols. It requires DAALA_EC or
RANS and ANS to be enabled. The adaptation is currently
based on a simple recursive filter and is taken from
Daala. It has an adaptation rate dependent on alphabet size,
taken from Daala. It applies wherever non-binary symbols
are encoded using Cumulative Probability Functions rather
than trees.
Where symbols are adapted, forward updates in the compressed
header are removed.
In the case of RANS coefficient token values are adapted,
with the exception of the zero token which remains a
binary symbol. In the case of DAALA_EC other values
such as inter and intra modes are adapted as CDFs are
provided in those cases.
The experiment is configured with:
./configure --enable-experimental --enable-daala-ec --enable-ec-adapt
or
./configure --enable-experimental --enable-ans --enable-rans \
--enable-ec-adapt
EC_ADAPT is not currently compatible with tiles.
BDR results on Objective-1-fast give a small loss:
PSNR YCbCr: 0.51% 0.49% 0.48%
PSNRHVS: 0.50%
SSIM: 0.50%
MSSSIM: 0.51%
CIEDE2000: 0.50%
Change-Id: I3888718e42616f3fd87144de7f125228446ac984
Parse the recursive transform block partition to fetch the actual
transform size. Use this correct transform size to select the
corresponding loop filter kernel. This slightly improves the coding
performance of recursive transform partition for hdres to 0.14%.
Change-Id: Ibe8bc3fdd0d222a4f1fb8156c56a407bec052b9b
