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
This ensures TGs can be decoded even if the whole
frame has not been received and the frame length
is not known.
Change-Id: If24837fcc3b5c46554751be792e91100de73e8d6
This is a manual adaptation of the following commit from aom/master:
ce12003d60a1c8d6c65ed07ba165c34062fcbcbd
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
Previously, when ext-partition-types and either clpf or dering were
enabled, the signalling for clpf/dering would not be encoded or decoded,
as the code to do so was inside a #if !CONFIG_EXT_PARTITION_TYPES block.
This caused many tests (eg, AV1/EndToEndTestLarge.EndToEndPSNRTest/0)
to fail with encode/decode mismatches.
Change-Id: If1742deb1812877813b2c3e93a048430f9a504ba
- Eliminate the awkward _av1 suffix/infix in local variable names.
- Lift bitdepth selection out of the token loop.
Change-Id: I26d3397464f7808e0481a804033a93ca4f01f5d5
Ran some manual sanity checks:
- Verified that the automatically generated encodings match the
hand-written encodings before the patch.
- Verified that the encoded bitstream before/after this patch is
identical.
Change-Id: I2153c57e463cff09c1d03d619b432fb1015199c3
Move computing the joint_cdf table per coded mv joint symbol to
computing it only when the probabilities are updated.
Change-Id: If5d195f70e6fad7b60f69606c8386ad5e69657d2
Move computing the inter_mode_cdf tables per coded inter mode symbol to
computing them only when the probabilities are updated.
Change-Id: I7a7b059ee75723cb6f278ed82a20cf34c27915d8
Limit the recursive transform block partition depth to 2. For a
32x32 transform block unit, one can maximally go down to 8x8 transform
block size.
Change-Id: I2caa92bb2eee64762b7ecca8920259f7c50fb0aa
Move computing the uv_mode_cdf tables per coded intra mode symbol to
computing them only when the probabilities are updated.
Change-Id: I627b59d30726c913f5d7ba7753cb0446a12655bb
Move computing the y_mode_cdf tables per coded intra mode symbol to
computing them only when the probabilities are updated.
Change-Id: I8c43d09b8ef5febe2a3ec64bd51d28bd78ea73ed
Move computing the kf_y_mode_cdf tables per coded intra mode symbol to
computing them only when the probabilities are updated.
Change-Id: I5999447050c2f7d5dbccde80bee05ecd1c5440ab
When building with --enable-daala_ec, the tx_type for intra blocks can be
coded using the CDFs that are updated once per frame.
This patch converts a tx_type symbol to be coded with aom_write_symbol()
and aom_read_symbol() that was missed in f3e8e267.
Change-Id: I34f8fef7525f88e156bbcb78dfc48994367610ce
The av1_token encodings must match the contents of the aom_tree_index
structures so generate all encodings from the symbol trees.
Change-Id: I37be9f12c86a02693ae3c3c1d24b00f2abb29bfb
The bug was introduced here:
https://chromium-review.googlesource.com/#/c/399975/4/av1/encoder/bitstream.c
In that patch, I had removed 2nd declaration of a variable of the same
name. But it turns out that the two variables actually had a different
type (even though the name was same).
Now, we keep both variables, but rename one of them -- that fixes the
mismatch. While we are at it, made both variables local as well.
The fix can be verified as follows:
../../libvpx/configure --enable-experimental --enable-supertx
--enable-var-tx --enable-entropy --enable-internal-stats && make clean
&& make -j16
aomenc -o soccer_cif_1000_av1_b8.webm ../soccer_cif.y4m --codec=av1
--limit=50 --skip=0 -p 2 --pass=1 --fpf=soccer_cif_av1.fpf --good
--cpu-used=0 --target-bitrate=1000 --lag-in-frames=25 --min-q=0
--max-q=63 --auto-alt-ref=1 --kf-max-dist=150 --kf-min-dist=0
--drop-frame=0 --static-thresh=0 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5 --sharpness=0
--undershoot-pct=100 --overshoot-pct=100 --frame-parallel=0
--tile-columns=0 --profile=0 --test-decode=warn
aomenc -o soccer_cif_1000_av1_b8.webm ../soccer_cif.y4m --codec=av1
--limit=50 --skip=0 -p 2 --pass=2 --fpf=soccer_cif_av1.fpf --good
--cpu-used=0 --target-bitrate=1000 --lag-in-frames=25 --min-q=0
--max-q=63 --auto-alt-ref=1 --kf-max-dist=150 --kf-min-dist=0
--drop-frame=0 --static-thresh=0 --bias-pct=50 --minsection-pct=0
--maxsection-pct=2000 --arnr-maxframes=7 --arnr-strength=5 --sharpness=0
--undershoot-pct=100 --overshoot-pct=100 --frame-parallel=0
--tile-columns=0 --profile=0 --test-decode=warn -v --psnr
Change-Id: Ibd72dbe1f620e6de231513220ee4e190606613ae
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
* changes:
Fix warnings reported by -Wshadow: Part4: main directory
Fix warnings reported by -Wshadow: Part3: test/ directory
Fix warnings reported by -Wshadow: Part2b: more from av1 directory
Fix warnings reported by -Wshadow: Part2: av1 directory
Fix warnings reported by -Wshadow: Part1b: scan_order struct and variable
Fix warnings reported by -Wshadow: Part1: aom_dsp directory
Move STAT_TYPE enum to source file.
Code cleanup: mainly rd_pick_partition and methods called from there.
While we are at it:
- Rename some variables to more meaningful names
- Reuse some common consts from a header instead of redefining them.
Cherry-picked from aomedia/master: 863b0499
Change-Id: Ida5de713156dc0126a27f90fdd36d29a398a3c88
Move computing the segmentation_probs.tree_cdf table per symbol to
computing it only when the probabilities are updated.
Change-Id: I3826418094bbaca4ded87de5ff04d4b27c85e35a
Move computing the partition_cdf tables per symbol to
computing them only when the probabilities are updated.
Change-Id: I442f9230ba00be7f5d0558d7c38d7324ad009ee8
Move computing the inter_ext_tx_cdf tables per symbol to
computing them only when the probabilities are updated.
Change-Id: I5e1e62f8eae8f6b2edbbd378beeb786649502c10
Move computing the intra_ext_tx_cdf tables per symbol to
computing them only when the probabilities are updated.
Change-Id: I26d5e419e103093e98a7d896c196176305b50fc9
