GitLab

Change-Id: Id80f76ea2598daa93e693c5efe29b782abe33957

intra-interp experiment allows intra prediction to use different
interpolation filters. It was part of the ext-intra in the nextgenv2
branch.

Change-Id: I27ab692494dc79bb92e457dbf9a72988577f1c6d

Change-Id: I21eaa680b0b340da5401a2b893ad9c847495ab79

Change-Id: Ic587cddf04053bced6325b3cd5ce1b963e783393

Change-Id: I21013412174a2edefdc5e30ece0e8e857b99ac5e

This commit adds an experiment to interleave the coding of transform
coefficients from YUV planes.  The experiment can be enabled at config
time by --enable-coef-interleave.

Change-Id: Ifd92f9c367304bca9732f13fa026eb8996363677

Enable the ref-mv experiment by default.

Change-Id: Icb4f37aab0dc866430569f0ee82805de1498bee3

Change-Id: Iaaf9244678cde74cf3e216f3b8c9d293f206f27e

The rans experiment is dead. The ans experiment with the ec_multisymbol
experiment also turned on takes its place.

Change-Id: Ie9f30ec7cf73aae6b2ea580a7b1f208485a8a7a7

Change-Id: I9e2a8db4e59cb9c109e978e473749ebc4e910148

PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq

The version of PVQ in this commit is adapted from the following
revision of Daala:
https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8

More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf

The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
 av1/common/generic_code.c
 av1/common/generic_code.h
 av1/common/laplace_tables.c
 av1/common/partition.c
 av1/common/partition.h
 av1/common/pvq.c
 av1/common/pvq.h
 av1/common/state.c
 av1/common/state.h
 av1/common/zigzag.h
 av1/common/zigzag16.c
 av1/common/zigzag32.c
 av1/common/zigzag4.c
 av1/common/zigzag64.c
 av1/common/zigzag8.c
 av1/decoder/decint.h
 av1/decoder/generic_decoder.c
 av1/decoder/laplace_decoder.c
 av1/decoder/pvq_decoder.c
 av1/decoder/pvq_decoder.h
 av1/encoder/daala_compat_enc.c
 av1/encoder/encint.h
 av1/encoder/generic_encoder.c
 av1/encoder/laplace_encoder.c
 av1/encoder/pvq_encoder.c
 av1/encoder/pvq_encoder.h

Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.

Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e

PVQ replaces the scalar quantizer and coefficient coding with a new
design originally developed in Daala. It currently depends on the
Daala entropy coder although it could be adapted to work with another
entropy coder if needed:
./configure --enable-experimental --enable-daala_ec --enable-pvq

The version of PVQ in this commit is adapted from the following
revision of Daala:
https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8

More information about PVQ:
- https://people.xiph.org/~jm/daala/pvq_demo/
- https://jmvalin.ca/papers/spie_pvq.pdf

The following files are copied as-is from Daala with minimal
adaptations, therefore we disable clang-format on those files
to make it easier to synchronize the AV1 and Daala codebases in the future:
 av1/common/generic_code.c
 av1/common/generic_code.h
 av1/common/laplace_tables.c
 av1/common/partition.c
 av1/common/partition.h
 av1/common/pvq.c
 av1/common/pvq.h
 av1/common/state.c
 av1/common/state.h
 av1/common/zigzag.h
 av1/common/zigzag16.c
 av1/common/zigzag32.c
 av1/common/zigzag4.c
 av1/common/zigzag64.c
 av1/common/zigzag8.c
 av1/decoder/decint.h
 av1/decoder/generic_decoder.c
 av1/decoder/laplace_decoder.c
 av1/decoder/pvq_decoder.c
 av1/decoder/pvq_decoder.h
 av1/encoder/daala_compat_enc.c
 av1/encoder/encint.h
 av1/encoder/generic_encoder.c
 av1/encoder/laplace_encoder.c
 av1/encoder/pvq_encoder.c
 av1/encoder/pvq_encoder.h

Known issues:
- Lossless mode is not supported, '--lossless=1' will give the same result as
'--end-usage=q --cq-level=1'.
- High bit depth is not supported by PVQ.

Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e

Change-Id: I9e2a8db4e59cb9c109e978e473749ebc4e910148

rd_debug is a debug tool aim at finding discrepancy between rate-distortion
loop and bitstream packing.

Change-Id: I751c4121516c5e6368668229c77778880a9dcb9d

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

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

Change-Id: I854c53d9379f820b5a78fcb53f9ef09bc6f9d9e7

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

the line buffer.

As compared to ref-mv, the results of this integration are:
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

Also:
- For unsigned ints, don't check value >= 0 as that is always true.
- Add "-Wlogical-op" warning flag which would have warned that "logical
  'or' of collectively exhaustive tests is always true" before this
  patch.

Change-Id: Idf3bd312464397f2df19256fc69b22f345dc7753

This is a manual adaptation of the following commit from aom/master:
ce12003d

The original commit message:

A tile group is a set of tiles in scan order.

Each tile group has a version of uncompressed and compressed headers,
identical apart from tile group parameters.
Encoding probability updates takes account of the number of
headers to control overheads.

The decoder supports arbitrary numbers of tile groups with
arbitrary number of tiles. The number of tiles in a TG is
signalled in the uncompressed header for that TG.

The encoder currently only supports a fixed number
of TGs (3, when error resilient mode is on) of equal size
(except possibly for the last one).

The average BDR performnce with 3 tile groups versus
anchor with error resilient mode and up to 16 tiles is:

NR YCbCr:      3.02%      3.04%      3.05%
PSNRHVS:      3.09%
SSIM:      3.06%
MSSSIM:      3.05%
CIEDE2000:      3.04%

Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b

This commit is a manual cherry-pick from aom/master:
42ff3881

Change-Id: I4a3cdb939b7b96a3aa27f6a00da7a0e73222f3f3

Purpose:
-Reduce dynamic range of interpolation filter coefficents from 8
bits to 7 bits.
-Inner product for 8-bit input data can be stored in a 16-bit signed
integer.

Impact on compression efficiency:
-Marginal improvement, typically less than 0.5% BDR.

Change-Id: I58d1408307ae7d2a6f9de8965c5877b258703199

Note: some of these warnings are enabled by a combination of -Wunused
(added earlier) and -Wextra.

Cherry-picked from aomedia/master: 4790a69f

Change-Id: I322a1366bd4fd6c0dec9e758c2d5e88e003b1cbf

Cherry-picked from aomedia/master: 953f086c

Note: related fixes were already part of webm/nextgenv2.

Change-Id: I027a4f2a540af5a304b358ddbf293965b4211b9e

Change-Id: I1424690fa792b960a1cfb78bbcb37da6b9899ee6

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

Change-Id: I4128af44776d1f361bddc1fdffb75ed2224dbfa5

This commit changes to send frame size explicitly when
error_resilient_mode=1. Purpose is to allow parsing of bitstream
after a packet loss.

Change-Id: I7d1c010a465aa18914762cc1a3e61db377304c08

The (new) ans experiment replaces the bool coder with uABS bools. The
'rans' experiment adds multisymbol coding.

This matches the setup in aom/master.

Change-Id: Ida8372ccabf1e1e9afc45fe66362cda35a491222

It was replaced by MOTION_VAR in commit cb60b185

Change-Id: I7ab625eef4dbae2e5585d9fa3b6873aa78b2c254

Now that all warnings are taken care of, add warning flag -Wshadow to
configure.

Note: Enabling this flag for C++ generates some useless warnings about
some function parameters shadowing class member function names. So, only
enabling this warning for C code.

Cherry-picked from aomedia/master: b96cbc44

Change-Id: I3922dea2e6976b16519c4aa4d1bd395c198134f1

This patch adds bit account infrastructure to the bit reader API.
When configured with --enable-accounting, every bit reader API
function records the number of bits necessary to decoding a symbol.
Accounting symbol entries are collected in global accounting data
structure, that can be used to understand exactly where bits are
spent (http://aomanalyzer.org). The data structure is cleared and
reused each frame to reduce memory usage. When configured without
--enable-accounting, bit accounting does not incur any runtime
overhead.

All aom_read_xxx functions now have an additional string parameter
that specifies the symbol name. By default, the ACCT_STR macro is
used (which expands to __func__). For more precise accounting,
these should be replaced with more descriptive names.

Change-Id: Ia2e1343cb842c9391b12b77272587dfbe307a56d

- Const correctness
- Refactoring
- Make variables local when possible etc
- Remove -Wcast-qual to allow explicitly casting away const.

Cherry-picked from aomedia/master: c27fcccc
And then a number of more const correctness changes to make sure other
experiments build OK.

Change-Id: I77c18d99d21218fbdc9b186d7ed3792dc401a0a0

Experiment on coding block at resolution of 4x4 block.

Change-Id: I6aa201038f00c590747d800edb0a3e76ab1a51e8

Change-Id: Ifcc329df240c0771172180933a6180b21fd31abe

Change-Id: I65c04006f6e6eb13ceb22efc1c39915cb3c82b82

Will break ext-intra into 2 experiments: ext-intra and filter-intra.

Change-Id: Ibf66e9b9d9307fd58a703eada9569b74d171434b

Change-Id: I2849a50163268d58cc5d80aacfec1fd02299ca43

This flag was already added to aomedia/master, so bringing it back to
webm/nextgenv2, as part of an effort to get the two codebases in sync.

Change-Id: I2b933a6a160e4210d1411a9e7978149eb8553205