On derflr testset, using 12-bit HightBitDepth mode, this CL obtained a
small gain of +0.031% by turning on LAST2+LAST3.
Change-Id: Ib6c9d595e56269634bf29d684eabcd806fc08cc9
Under experiment CONFIG_LAST3_REF, which can only be turned on when
the experiment of CONFIG_MULTI_REF is on, i.e. LAST3_FRAME can only
be used when LAST2_FRAME is used. CONFIG_LAST3_REF would most likely
be combined with CONFIG_MULTI_REF once the performance improvement
is further confirmed.
On the testset of derflr, using Average PSNR metrics, with HighBitDepth
(HBD) on:
(1) LAST2 HBD obtained +0.579% against base HBD;
(2) LAST2 + LAST3 HBD obtained +0.591% against LAST2 HBD;
(3) LAST2 + LAST3 HBD obtained +1.173% against base HBD.
Change-Id: I1aa2b2e2d2c9834e5f8e61bf2d8818c7b1516669
This CL introduces a few macros plus code cleaning on the encoding of
the reference frames. Coding performance remains unchanged.
For the encoding of either the compound reference or the single reference
case, since each bit has different contexts, the tree structure may not
be applied to treat the combined bits as one symbol. It is possible we may
explore the sharing of the same context for all the bits to introduce
the use of tree structure for the next step.
Change-Id: I6916ae53c66be1a0b23e6273811c0139515484df
Under the experiment CONFIG_MULTI_REF. Current version shows
LAST2 vs base in nextgen on the testset of derflr:
(1) 8-bit: Average PSNR +0.53%
(worst: students_cif: -0.247%; best: mobile_cif: 1.902%)
(2) 12-bit HBD: Average PSNR +0.63%
(worst: pamphlet_cif: -0.213%, best: mobile_cif: 2.101%)
More tuning on the reference frame context design and default
probs are being conducted. This version does not guarantee to
work with other experiments in nextgen. A separate CL will address
the working with all other experiments.
Change-Id: I7f40d2522517afc26ca389c995bad56989587f65
CONFIG_SR_MODE=1, enable SR mode
USE_POST_F=1, enable SR post filter
SR_USE_MULTI_F=1, enable SR post filter family
Not compatible with other experiments yet
Change-Id: I116f1d898cc2ff7dd114d7379664304907afe0ec
Disables some test vector tests when Vp8/Vp9 decoders are disabled
in configuration. Also moves some macros to the vpx level in
line with recent refactoring on the master branch.
Change-Id: Iaac8008992110398ae096c36b9726f723164c207
derflr: up to 1.429% from a little less than 1.3% when
--enable-dst1 is also enabled with --enable-ext-tx.
Change-Id: I301229f2239b18acb96accc4fc44b64fa6927ace
Adds an additional transform in the ext_tx experiment that
is a 2d DST1-DST1 combination.
To enable use --enable-ext-tx --enable-dst1.
This needs to be later extended to combine DST1 with DCT
or ADST.
Change-Id: I6d29f1b778ef8294bcfb6a512a78fc5eda20723b
Limited the prediction extension to 8 pixels at each edge
Fixed a bug in the combination of wedge prediction and supertx
~10% speed up in decoder
derflr: -0.004
derflr+hbd: +0.002
hevcmr: +0.015
Change-Id: I777518896894a612c9704d3de0e7902bf498b0ea
Framework for alternate transforms for inter 32x32 and larger based
on dwt-dct hybrid is implemented.
Further experiments are to be condcuted with different
variations of hybrid dct/dwt or plain dwt, as well as super-resolution
mode.
Change-Id: I9a2bf49ba317e7668002cf1499211d7da6fa14ad
Optimization of bilateral filter:
1) Pre-calculate the bilateral filters at all the
levels at the initialization.
2) Convert 1D matrix to 2D matrix, avoid too many
multiplications in the bilateral filter loop.
3) Fix a bug in "loop_bilateral_filter_highbd".
The right-shifted range index can be larger than 255.
Change-Id: I42f6177e896706948e2403bd9edce46e3eb5cbf8
Changes to allow high bit depth and palette to be enabled at the
same time by using a 16 bit (instead of 8bit) palette when high
bit depth is enabled and modifying related functions accordingly.
Change-Id: I97d30b4d9338d3a51db02c94bc568eba60a8905d
There are 4 entropy tables to select for initial entropy table,
depending on the frame base q-index. The entropy tables are
trained with derf, yt, and stdhd sets. About 0.2% gain on
the following test sets:
derflr 0.227%
yt 0.277%
stdhd 0.233%
hevclr 0.221%
hevcmr 0.155%
hevchr 0.182%
Change-Id: I3fde846c47fc020e80c814897690b4cda1da569c
Change-Id: I460408372586c823974f945ed9fd8dcb0360fbaf
For the combination of this and removing NEWDV from the tree:
derflr: -0.101 screen_content: +0.053
The bulk of the decline in screen content effecincy is from the liquify
clip. These should be recoverable by further entropy tweaks.
Change-Id: I9d80152b8492e60a0367c31797fb6932fb09bba9
The wavelets implemented are 2/6, 5/3 and 9/7 each with
a lifting based scheme for even block sizes. The 9/7
one is a double implementation currently.
This is to start experiments with:
1. Replacing large transforms (32x32 and 64x64) with wavelets
or wavelet-dct hybrids that can hopefully localize errors better
spatially. (Will also need alternate entropy coder)
2. Super-resolution modes where the higher sub-bands may be
selectively skipped from being conveyed, while a smart
reconstruction recovers the lost frequencies.
The current patch includes two types of 32x32 and 64x64
transforms: one where only wavelets are used, and another
where a single level wavelet decomposition is followed
by a lower resolution dct on the low-low band.
Change-Id: I2d6755c4e6c8ec9386a04633dacbe0de3b0043ec
This fixes a failure to decode as VP9 with frame level signalling
patched in and removed to implictly force it off.
This is primarily a correctness fix, but there were small coding gains.
0.074% smaller on derlf
0.180% smaller on screen_content
Change-Id: I4cc264bf4d9016201924be198a0c5b8374020fd9
This commit allows the decoder to decode selective tiles according
to decoder configuration settings. To decode a single tile out of
the provided key frame bit-stream (test_kf.webm), set compiler
configuration:
--enable-experimental --enable-row-tile --enable-key-frame-tile
use the command:
vpxdec -o test_dec.y4m test_kf.webm --tile-row=1 --tile-column=2
where the tile's row and column indexes are 1 and 2, respectively.
To decode all row tiles inside a provided column index, use:
--tile-row=-1 --tile-column=2
To decode all column tiles inside a provided row index, use:
--tile-row=2 --tile-column=-1
Change-Id: Ib73c266414dcee7eaab5d741b90d0058970dae56
Fixing compile errors when intrabc and vp9_highbitdepth are both enabled.
Error arose because intrabc uses vp9_setup_scale_factors_for_frame()
which takes an additional argument (use_highbitdepth) when
vp9_highbitdepth is enabled.
Change-Id: I6a15b09dcea0d35525f4c25efb6848804ae5cfab
With this patch, the ZEROMV mode is overloaded to represent
a single global dominant motion using one of three models:
1. True zero translation motion (as before)
2. A translation motion different from 0
3. A Rotation-zoom affine model where the predictor is warped
The actual model used is indicated at the frame level for
each reference frame.
A metric that computes the ratio of the error with a global
non-zero model to the error for zero motion, is used to
determine on the encoder side whether to use one of the two
non-zero models or not.
Change-Id: I1f3d235b8860e543191237024a89041ff3aad689
Now this is an on-going work on the re-work on the motion vector
references for all Inter coding modes. Currently implementation on
sub8x8 and BLOCK_8X8 is done. More work will be added along the way.
Essetial ideas include:
(1) Added new nearestmv algorithm through adaptive median search, out of
the four nearest neighbors: TOP, LEFT, TOPLEFT, and TOPRIGHT;
(2) Added new sheme for sub8x8 to obtain the mv ref candidates,
specially, mv ref candidates are obtained depending on the sub8x8 mode
of the current block as well as the sub8x8 mode of the neighboring
block;
(3) Added top right corner mv ref candidate whenever it is available;
The adding of the top right mv ref has showed potential in helping such
video clips as bridge_far_cif.
Change-Id: I573c04cd346ed7010f4ad87a6eaa6bab6e2caf9c
Adding a high bit depth version of the function loop_bilateral_filter()
and ensuring the appropriate version of this function is called when
vp9_highbitdepth is enabled.
Change-Id: I7a78029c733a9a79b3b2f39af0de0824239ad5a3
This commit allows the internal codec handle arbitrary tile size
in the unit of 64x64 pixel blocks.
Change-Id: I3ad24de392064645bebab887c94e1db957794916
