GitLab

Change-Id: I2b2b70e756b7eb9611b7b33b7d5f19b3b30e0a50

Cherry-Picked the following commits:
0defd8f2 Changed "WebM" to "AOMedia" & "webm" to "aomedia"
54e66767 Replace "VPx" by "AVx"
5082a369 Change "Vpx" to "Avx"
7df44f17 Replace "Vp9" w/ "Av1"
967f722f Remove kVp9CodecId
828f30ce Change "Vp8" to "AOM"
030b5ffc AUTHORS regenerated
2524caee Add ref-mv experimental flag
016762be Change copyright notice to AOMedia form
81e55269 Replace vp9 w/ av1
9b94565b Add missing files
fa8ca9f2 Change "vp9" to "av1"
ec838b76  Convert "vp8" to "aom"
80edfa01 Change "VP9" to "AV1"
d1a11fb9 Change "vp8" to "aom"
7b582513 Point to WebM test data
dd1a5c8d Replace "VP8" with "AOM"
ff00fc0f Change "VPX" to "AOM"
01dee0bb Change "vp10" to "av1" in source code
cebe6f0c Convert "vpx" to "aom"
17b05679 rename vp10*.mk to av1_*.mk
fe5f8a8a rename files vp10_* to av1_*

Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419

Manually cherry-picked commits:
ceef0583 libvpx->libaom part2
3d26d916 libvpx -> libaom
cfea7dd7 vp10/ -> av1/
3a8eff73 Fix a build issue for a test
bf4202ed Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc

This computes global motion parameters between 2 frames by
matching corresponding points using FAST feature and then
fitting a model using RANSAC.

Change-Id: Ib6664df44090e8cfa4db9f2f9e0556931ccfe5c8

Frame can be split into rectangular tiles for application of separate
bilateral or Wiener filters per tile. Some variable names changed for
better readability.

Change-Id: I13ebc4d0b0baf368e524db5ce276f03ed76af9c8

For rectangular blocks between 8x8 and 32x32, we can now code the
transform size as one bigger than the largest square that fits in
the block (eg, for 16x8, we can code a transform size of 16x16
rather than the previous maximum of 8x8), when this oversized
transform is coded in the bitstream, the codec will use the full
size rectangular transform for that block (eg 16x8 transform in
the above example).

Also fixes a scaling bug in 16x8/8x16 transforms.

Change-Id: I62ce75f1b01c46fe2fbc727ce4abef695f4fcd43

Adapt rectangular txfm experiment to syntax/tokenization/loopfilter
framework of VAR_TX

Change-Id: Idcb005ecf5b3712de3e1cccb0d811ca16d87af24

Change-Id: I02f44713b99284092ecfc50ce7ab268e91d2c6f8

Insert multiple arfs in a gf group to emulate multi-layer backward
reference frames structure. At maximum, two extra ARF's are inserted
in a gf group.

It improves the RD performance by 0.317% in Avg in lowres dataset.

Change-Id: I62c32e1b0f25b978484dd113b319bebcd959bf60

clang-format authored Aug 18, 2016 and James Zern committed Aug 18, 2016

after:
253c001f Port dering experiment from aom
72081457 Adding 8x16/16x8/32x16/16x32 transforms

Change-Id: Id93e0d7b72a128701d8dec35fc2fac473944d0c1

BUG=webm:1275

Change-Id: I7d4bbaaf2f2146b023e1902fbc535a70e490cf2d

This was originally subtracting 1 from the wrong element in the
parameter set.

Change-Id: I790aafc505f7a8fe7bb00d7d6c62549487a0980f

Mannually cherry-picked:
15791332 Use OD_DIVU for small divisions in temporal_filter.
03122298 Replace divides by small values with multiplies.
9c48eec7 Removing divisions from od_dir_find8()
0950ed82 Merge "Port active map / cyclic refresh fixes to vp10."
efefdad7 Port active map / cyclic refresh fixes to vp10.
1eaf748c Port switch to 9-bit rate cost to aom.
0b1606e7 Only build deringing code when --enable-dering.
e2511e15 Deringing cleanup: don't hardcode the number of levels
8fe5c5d6 Rename dering_in to od_dering_in to sync with Daala
4eb1380d Makes second filters for 45-degree directions horizontal
7f4c3f58 Removes the superblock variance contribution to the threshold
3dc56f93 Simplifying arithmetic by using multiply+shift
cf2aaba9 Return 0 explicitly for OD_ILOG(0).
49ca22aa Use the Daala implementation of OD_ILOG().
85187243 Fix compiler warning in od_dering.c.
485d6a69 Prevent multiple inclusion of odintrin.h.
51b7a998 Adds the Daala deringing filter as experimental

Note that a few of the changes were already in libvpx codebse.

Change-Id: I1c32ee7694e5ad22c98b06ff97737cd792cd88ae

Manually cherry-picked following commits from AOMedia git repository:
bb2727c2 Sort includess for "clpf.h"
c297fd00 Add quantisation matrix range parameters.
0527894f Add encoder option and signaling for quant matrix control.
4106232b Turn off trellis coding for quantization matrices.
4017fca3 Modify tests to allow quantization matrices.
1c122c24 Add quant and dequant functions for new quant matrices.
95a89994 Enable CLPF
f72782bb Fix a build issue
73bae509 Add quantisation matrices and selection functions
33208d20 Added support for constrained low pass filter (CLPF)

Change-Id: I60fc1ee1ac40e6b9d1d00affd97547ee5d5dd6be

clang-format authored Aug 11, 2016 and James Zern committed Aug 12, 2016

Change-Id: I58a42ced5b8a4338524434ff3356850b89aa705a

This is a debug tool used to detect bitstream error. On encoder side, it pushes
each bit and probability into a queue before the bit is written into the
Arithmetic coder. On decoder side, whenever a bit is read out from the
Arithmetic coder, it pops up the reference bit and probability from the queue as
well. If the two results do not match, this debug tool will report an error.
This tool can be used to pin down the bitstream error precisely. By combining
gdb's backtrace method, we can detect which module causes the bitstream error.

Change-Id: I133a4371fafdd48c488f2ca47f9e395676c401f2

We have renamed following Macros to avoid name confusion:

REFS_PER_FRAME --> INTER_REFS_PER_FRAME
(= ALTREF_FRAME - LAST_FRAME + 1)
MAX_REF_FRAMES --> TOTAL_REFS_PER_FRAME
(= ALTREF_FRAME - INTRA_FRAME + 1)

INTER_REFS_PER_FRAME specifies the maximum number of reference frames
that each Inter frame may use.
TOTAL_REFS_PER_FRAME is equal to INTER_REFS_PER_FRAME + 1, which
counts the INTRA_FRAME.

Further, at the encoder side, since REF_FRAMES specifies the maximum
number of the reference frames that the encoder may store, REF_FRAMES
is usually larger than INTER_REFS_PER_FRAME. For example, in the
ext-refs experiment, REF_FRAMES == 8, which allows the encoder to
store maximum 8 reference frames in the buffer, but
INTER_REFS_PER_FRAME equals to 6, which allows each Inter frame may
use up to 6 frames out of the 8 buffered frames as its references.
Hence, in order to explore the possibility to store more reference
frames in future patches, we modified a couple of array sizes to
accomodate the case that the number of buffered reference frames is
not always equal to the number of the references that are being used
by each Inter frame.

Change-Id: I19e42ef608946cc76ebfd3e965a05f4b9b93a0b3

Change-Id: Ic90ebe6136f4b75645ba699d49c0bcb3764ddccf

The gm parameters need to have WARPED_PRECISION_BITS precision
until they are written to the bitstream because functions in
reconinter use these parameters before they are written to
the bitstream. Previously, the parameters weren't being converted
to WARPED_PRECISION_BITS until they were read from the bitstream
which causes an encode/decode mismatch.

Change-Id: I31e76e9d6f7d24df21af287a72f8c01f1997304d

Manually cherry-picked the following changes:
8c8d16de vp9 -> vpx in names
75b57d39 VP9_ -> VPX_ in function names
761a7088 VP9_INTERP_EXTEND -> VPX_INTERP_EXTEND
4273a52c VP9->VPX in border pixel macros
03568c31 VP9_FRAME_MARKER -> VPX_FRAME_MARKER
2334f51d VP9->VPX in fdct function names

Change-Id: Icc18dbf4b416dd0fa21033b3e19ab8a47c893508

Change-Id: I9cd355a3ea344ef66a61028efa25d94f54e7e2bd

Added a new expt rect-tx to be used in conjunction with ext-tx.
[rect-tx is a temporary config flag and will eventually be
merged into ext-tx once it works correctly with all other
experiments].

Added 4x8 and 8x4 tranforms for use initially with rectangular
sub8x8 y blocks as part of this experiment.

There is about a -0.2% BDRATE improvement on lowres, others pending.

When var-tx is on rectangular transforms are currently not used.
That will be enabled in a subsequent patch.

Change-Id: Iaf3f88ede2740ffe6a0ffb1ef5fc01a16cd0283a

Currently nothing is implemented to compute GM parameters, this
just adds the capability to send them in the bitstream if they
were computed. Still need to implement the reconstruction
based on the parameters in reconinter.

Change-Id: I72aea3c6a9de9f5a40f96da76c82b54a52781fe2

ARF with zero strength temporal filter can be reused by setting the
show_existing_frame = 1, and in this case, there is no need to
refresh the reference frame buffer. However, we used the flag
"refresh_golden_frame" as the identifier for the starting point of a gf
group.

A new flags "is_arf_filter_off" is used to record if the filter with
strengrh zero is used.

Change-Id: I25971a760f6e1638d5147fe30488c48125512b1a

quiets a -Wmissing-prototypes warning

BUG=b/29584271

Change-Id: I91aba2a75dccd6752bdf91837564c2aa45817c09

The combination of the two experiments improves the compression
performance gains:

lowres 2.5%
midres 2.1%

Change-Id: Id26c0a9474ce08893aa1d946365c7ff850fab57a

Originally we need to send the refresh flag and the virtual indices
mapping for the reference frame buffer update for show_existing_frame to
have the BWDREF_FRAME replace the LAST_FRAME.

To remove sending this information, we update the the virtual indices
of the reference frame buffer after the last_bipred_frame is encoded,
and therefore the decoder will receive the updated reference mapping
at the next non-show-existing frame.

As a result, we can save 4 bytes per show-existing frame, and get 0.12,
0.2, and 0.07 BDRATE improvement in lowres, derf, and midref test set
respectively.

Change-Id: I63d41ee6ea99884798f0778b789d2701e2f2d3e0

Change-Id: Ib8ac19f25d06351b8aabed742aa0be66e28ec4d4

This patch removed the experiment of BIDIR_PRED and merged the feature
into the experiment of EXT_REFS:

(1) Each frame now has up to 6 reference frames, namely
    LAST_FRAME, LAST2_FRAME, LAST3_FRAME, GOLDEN_FRAME, (forward) and
    BWDREF_FRAME, ALTREF_FRAME (backward);
    LAST4_FRAME has been removed;
(2) First pass still keeps the 8 updates:
    KF_UPDATE, LF_UPDATE, GF_UPDATE, ARF_UPDATE, OVERLAY_UPDATE, and
    BRF_UPDATE, LAST_BIPRED_UPDATE, BI_PRED_UPDATE;
(3) show_existing_frame==1 is supported in the experiment of EXT_REFS;
(4) New encoding modes are added for both single-ref and compound cases,
    through the use of the 2 extra forward references (LAST2 & LAST3)
    and the 1 extra backward reference (BWDREF).

RD performance wise, using Overall PSNR: Avg/BDRate
        Bipred only      Prev EXT_REFS    Current EXT_REFS with bipred
lowres: -3.474/-3.324    -1.748/-1.586    -4.613/-4.387
derflr: -2.097/-1.353    -1.439/-1.215    -3.120/-2.252
midres: -2.129/-1.901    -1.345/-1.185    -2.898/-2.636

If in vp10/encoder/firstpass.h, change BFG_INTERVAL from 2 to 3, i.e. to
use 2 bi-predictive frames than 1, a further improvement may be
obtained:
                 Current EXT_REFS with bipred
        1 bi-predictive frame    2 bi-predictive frames
lowres: -4.613/-4.387            -4.675/-4.465
derflr: -3.120/-2.252            -3.333/-2.516
midres: -2.898/-2.636            -3.406/-3.095

Change-Id: Ib06fe9ea0a5cfd7418a1d79b978ee9d80bf191cb

Change-Id: Id918d502c8f89e236bcb51949d7ad34efa017321

Move the supertx skip bit and transform type past the recursive
prediction blocks. This is in preparation for using the segment level
skip feature for supertx blocks.

Change-Id: I8319414b0734144a9264e8a4a60940b6716b12a8

Change-Id: I15d54a3ae48b2b33082668116792c6595bdb3ddb

Change-Id: Ifbcd0714fcf994c43b69255185456c7a255df66c

This is for the bidir-pred experiment. Previously the length of the
bi-predictive frame group interval is fixed at 2, i.e. one
bi-predictive frame may be inserted every other frame. This patch
makes the length adjustable, i.e. any positive number may be
specified, but the use of the backward ref will be turned off if the
bi-predictive frame group interval is larger than the golden frame
group.

Further, an additional rate factor level has been added:
INTER_LOW
, which applies to LAST_BIPRED_UPDATE frames that are not used as
references.

Change-Id: I5514d34a64dd486bbb5756c2d0612946f598a789

No performance changes.

Change-Id: I001068330ea217a993aee9b79d7ffead0d23100e

Major parts have been implemented as follows:
(1) Added BRF_UPDATE, LASTNRF_UPDATE, and NRF_UPDATE in firstpass.c;
(2) Added the handling for the scenario of
"cpi->common.show_existing_frame == 1" at the encoder;
(3) Added a new reference frame of BWDREF_FRAME;
(4) Have bwd-ref work with upsampled references.

Note that when the experiment of "ext_refs" turned on, this experiment
will be turned off automatically currently.

RD performance in Overall PSNR has been improved, compared against the
VP10 baseline:

lowres: Avg -3.312; BDRate -3.154
derflr: Avg -1.927; BDRate -1.176
midres: Avg -2.149; BDRate -2.001
hdres : Avg -0.567; BDRate -0.588

Change-Id: I4c06ff51cc20194bffbd4d2346e57ba3dcf6b62c

Mostly refactoring. Handles signs better though results are
more or less neutral.

Change-Id: If499537c8f8da4f34d104ebfda072eb4c85fb12f

If a reference block is coded with sub8x8 block size, and if it
has sub-pixel level motion vectors, its prediction filter type
should be used as context information.

The coding performance gains of dual filter type coding scheme are
lowres  0.57%
hdres   0.88%

Change-Id: I68b98f2518d02f11c29d0256aeb45b2580fe5cac

For the current stage, we assume a single prediction filter type
per direction in the settings of compound inter prediction modes.

Change-Id: I12a1afdd364b93fcee870bd11ad01fc40ab48cff

This fixes the stack overflow issue on MSVC build.

Change-Id: Icb0a78e5992a097d2192979ec2432546eaa452dd