Commit Graph

80 Commits

Author SHA1 Message Date
Jingning Han
6910f178f1 Use consistent partition context setup in enc/dec
Move set_partition_seg_context_ to common file. Use consistent
context setup conditions for partition probability model update at
encoder and decoder.

Change-Id: I24b7ed3b1c48e3d2568191a46b70136b99b67b1a
2013-05-11 15:22:13 -07:00
John Koleszar
da5054c5af Fix token allocation for non-4:2:0
Increase the allocated size of the token array to support 4:4:4.

Change-Id: I7766a7bedc74b819dcc1f3622d634f340fd3186d
2013-05-09 20:22:59 -07:00
John Koleszar
da58436f43 Subsampling aware allocs and bitstream
Make framebuffer allocations according to the chroma subsamping
factors in use. A bit is placed in the raw part of the frame header for
each of the two subsampling factors. This will be moved in a future
commit to make them part of the TBD feature set bits, probably only set
on keyframes, etc.

Change-Id: I59ed38d3a3c0d4af3c7c277617de28d04a001853
2013-05-09 17:50:12 -07:00
Dmitry Kovalev
f66320abff Removing LOOPFILTER_TYPE and corresponding bit in bitstream.
We don't have two loopfilter types anymore.

Change-Id: I53c0137361342c7d00887ad03be3490f0dfa3532
2013-05-08 16:44:08 -07:00
Jingning Han
4a88ad89fd Extend left/above partition context to per mi(8x8)
Update and buffer left/above partition information context per 8x8
block. This allows to further enable recursive partition down to
4x4 block size, and hence deprecating I4X4_PRED and SPLITMV.

This commit also fixes a context buffer swap/restore issue in 32x32
partition type search. This gives 0.1% performance gain for derf/yt.
Will refactor the superblock partition type search into recursion
form.

Change-Id: Ib61975aca5f12b78d8018481d7fa1393d085689b
2013-05-08 10:20:34 -07:00
Paul Wilkins
a14ae84749 Deprecate code_zerogroup experiment.
Delete code under the CONFIG_CODE_ZEROGROUP flag.

Change-Id: I5fe6c7b42a5da9b73118e33594301da4129f320a
2013-05-07 16:52:55 -07:00
Paul Wilkins
1ed57a6a62 Deprecate comp_interintra_pred experiment.
Delete code under the CONFIG_COMP_INTERINTRA_PRED
flag.

Change-Id: I3d1079cf46305c08f7e11d738596ea112e7b547f
2013-05-07 16:24:08 -07:00
Jingning Han
776c1482a3 Merge SB8X8 into the codebase
Pull sb8x8 out of experimental list. verified via borg run tests.
Fixed unit test failures.

Change-Id: I12a4bbd17395930580c048ab68becad1ffe46e76
2013-05-07 09:08:25 -07:00
Adrian Grange
7aae782c37 Merge "Extend number of reference buffers to 8." into experimental 2013-05-03 09:59:54 -07:00
Adrian Grange
d7eea782f2 Extend number of reference buffers to 8.
The number of reference buffers is extended to 8 and
a reference sign-bias added for the LAST_FRAME.

Whilst the number of reference buffers used by an
individual frame remains unchanged at 3, these may
now be selected from 8 possible buffers.

Change-Id: I2d247b9c1c2b3a339d6c9fac125e81ba373f75a7
2013-05-03 09:17:18 -07:00
Scott LaVarnway
3041cf8c8b Merge "Reduced y_dequant, uv_dequant size" into experimental 2013-05-03 07:30:31 -07:00
Scott LaVarnway
94ed11d89d Reduced y_dequant, uv_dequant size
Currently, only two values are used.  Removed the unused
values.

Change-Id: Idc5b8be354d84ffc68df39ea3e45f9f50d977b35
2013-05-01 16:25:10 -04:00
Dmitry Kovalev
6e4ed2f0fe Merge "Adding vp9_get_qindex function." into experimental 2013-05-01 12:04:21 -07:00
Ronald S. Bultje
d068d869b9 sb8x8 integration in rd loop.
Work-in-progress, not yet ready for review. TODO items:
- bitstream writing (encoder) and reading (decoder)
- decoder reconstruction

Change-Id: I5afb7284e7e0480847b47cd0097cb469433c9081
2013-04-30 16:13:20 -07:00
Dmitry Kovalev
3f6c6ffc86 Adding vp9_get_qindex function.
Moving common code from encoder and decoder to vp9_get_qindex function.
Also moving quant-related constants from vp9_onyxc_int.h to
vp9_quant_common.h.

Change-Id: I70c5bfbaa1c8bf00fde0bfc459d077f88b6d46c8
2013-04-30 13:39:50 -07:00
Dmitry Kovalev
70d12c3a75 Merge "Renaming refresh_entropy_probs to refresh_frame_context." into experimental 2013-04-30 10:21:24 -07:00
Ronald S. Bultje
2dbaa4f4f4 Change above/left_context to use an 8x8 basis.
Output changes slightly because of a minor bug in (at least) the sb32x16
block2above tx16x16 tables that previously existed in vp9_blockd.c.

Change-Id: I624af28ac200a8322d64454cf05c79e9502968cc
2013-04-29 10:37:25 -07:00
Dmitry Kovalev
9713a68719 Renaming refresh_entropy_probs to refresh_frame_context.
Change-Id: I5429c02246d198eb1b6aadbc3313b26bf3436062
2013-04-26 14:39:58 -07:00
Ronald S. Bultje
1a46b30ebe Grow MODE_INFO array to use an 8x8 basis.
Change-Id: I087e08e7909a406b71715b8525c104208daa6889
2013-04-26 11:57:17 -07:00
Dmitry Kovalev
22c6ce03fa Merge "Handling frame references and scale factors in one for loop." into experimental 2013-04-25 10:17:34 -07:00
Dmitry Kovalev
994c79cccf Handling frame references and scale factors in one for loop.
Using ALLOWED_REFS_PER_FRAME constants instead of hard coded 3, replacing
memcpy with plain struct assignment.

Change-Id: Ibc86f5d175fcb3f3a3eddacf593525370f1f854c
2013-04-24 17:20:53 -07:00
Yaowu Xu
bcf82cf503 Merge two similar functions into one
Function set_mb_row() and set_mb_col() do similar work and are always
called together, this commit merged them into a single function for
clarity and easy maintainence.  This was a TODO item.

Change-Id: I956bd9ed6afb8b2b0469b20fd8bc893b26f8a0f3
2013-04-24 15:58:03 -07:00
Jingning Han
ff2b8aa2c9 Contextual entropy coding of partition syntax
This commit enables selecting probability models for recursive block
partition information syntax, depending on its above/left partition
information, as well as the current block size. These conditional
probability models are reasonably stationary and consistent across
frames, hence the backward adaptive approach is used to maintain and
update the contextual models.

It achieves coding performance gains (on top of enabling rectangular
block sizes):
derf:   0.242%
yt:     0.391%
hd:     0.376%
stdhd:  0.645%

Change-Id: Ie513d9673337f0d27abd65fb566b711d0844ec2e
2013-04-24 14:23:14 -07:00
Deb Mukherjee
0e905e03f2 Merge "Fix in token allocation with zerogroup expt" into experimental 2013-04-24 08:57:25 -07:00
Scott LaVarnway
e3167b8c23 Merge "Eliminated prev_mip memsets/memcpys" into experimental 2013-04-23 10:22:13 -07:00
Deb Mukherjee
64e7f017ce Fix in token allocation with zerogroup expt
Fix to increase allocation of tokens at very high rates.

Change-Id: Ia27aa0316b0fab664230800f9c9947b5c68ecd58
2013-04-23 08:51:31 -07:00
Deb Mukherjee
0aa79be7d5 Removes the code_nonzerocount experiment
This patch does not seem to give any benefits.

Change-Id: I9d2b4091d6af3dfc0875f24db86c01e2de57f8db
2013-04-22 10:58:49 -07:00
Deb Mukherjee
70d9f116fd End of orientation zero group experiment
Adds an experiment that codes an end-of-orientation symbol
for every eligible zero encountered in scan order.

This cleans out various other sub-experiments that were part
of the origiinal patch, which will be later included if found
useful.

Results are slightly positive on all sets (0.1 - 0.2% range).

Change-Id: I57765c605fefc7fb9d1b57f1b356843602abefaf
2013-04-22 09:27:59 -07:00
Scott LaVarnway
9662531d77 Eliminated prev_mip memsets/memcpys
For 1080 material, this buffer is currently 2,270,928 bytes.  This patch swaps
ptrs instead of copying and uses the last show_frame flag instead of setting
the entire buffer to zero.  For the test clip used, the decoder improved by up
to 1%.


Change-Id: I686825712ad56043e09ada9808dc489f875a6ce0
2013-04-19 18:38:10 -04:00
Dmitry Kovalev
8b20aa2337 Merge "Renaming y1dc_delta_q, uvdc_delta_q, uvac_delta_q fields from VP9Common." into experimental 2013-04-18 14:26:06 -07:00
Jingning Han
90a91cc683 Recursive partition syntax coding
Enable recursive partition information coding from SB64X64 down to
MB16X16. The bit-stream syntax is now supporting rectangular block
sizes. It starts from SB64X64 and recursively describes the partition
type of the current block. If the partition type is PARTITION_NONE,
the block is coded as a single unit; if it is PARTITION_HORZ or
PARTITION_VERT, the block is segmented into two independently coded
rectangular units, with no further partition needed; otherwise, the
block is segmented into 4 square blocks. i.e., PARTITION_SPLIT case,
each can be potentially further partitioned.

Forward adaptive probability modeling is used for the partition
information coding, conditioned on the current block size.

Change-Id: I499365fb547839d555498e3bcc0387d8a3587d87
2013-04-16 18:41:26 -07:00
Dmitry Kovalev
1ad7c1f250 Renaming y1dc_delta_q, uvdc_delta_q, uvac_delta_q fields from VP9Common.
New names are y_dc_delta_q, uv_dc_delta_q, uv_ac_delta_q.

Change-Id: I4acae1fc23a4697ce2c5a5becb8dc28ef0a4b552
2013-04-16 15:05:52 -07:00
John Koleszar
e3cfe4e89e Remove the mb_no_coeff_skip flag
This flag was added to VP8 to allow a mode where MB-level skipping
was not allowed, saving a bit per mb. It was never used in practice,
and hasn't been tested in VP9, so remove it.

Change-Id: Id450ec6904c6d06c1919508e7efc52d05cde5631
2013-04-16 12:36:16 -07:00
Adrian Grange
c2876cf0fd Initial addition of multiple ARF frames
This is work-in-progress, it implements multiple ARF
encoding behind an experimental flag.

It adds the ability to insert multiple ARF frames into a
single ARF group. This patch implements the reordering
of the coded frames, and implements a fixed-length coding
pattern. It applies a fixed quantizer strategy based on
where the frame is in the coding sequence.

Further work to modify the rate control strategy is
ongoing and will be submitted via a set of future patches.

In this first step, each ARF group is recursively
bisected and an ARF frame added at that position in the
sequence. The recursion continues until ARF frames are
within MIN_GF_INTERVAL frames.

The code sits behind the "multiple-arf" experimental
flag ("CONFIG_MULTIPLE_ARF"). The experimental flag
"oneshotq" ("CONFIG_ONESHOTQ") also needs to be enabled
for this patch to work correctly.

Change-Id: Ie473b05ebb43ac473c0cfb659b2b8042823085e2
2013-04-15 09:11:39 -07:00
Dmitry Kovalev
0cef7234e1 Merge "Fixing upper case names." into experimental 2013-04-10 13:29:38 -07:00
Dmitry Kovalev
c34f6fcb54 Fixing upper case names.
Renaming Y1dequant to y_dequant, UVdequant to uv_dequant, QIndex to qindex.

Change-Id: I1c356e5f886deb3f8807dc212de9799b55b09d58
2013-04-09 10:46:57 -07:00
Dmitry Kovalev
df76a617b4 Cleanup of set_offsets function.
Adding ALLOWED_REFS_PER_FRAME constant instead of hard coded number 3.

Change-Id: I46146aa837896936f920c748c7d4aa4c27f026e4
2013-04-09 10:17:22 -07:00
John Koleszar
0e7b7e47c2 Merge "Small cleanup inside setup_loopfilter function." into experimental 2013-04-05 16:13:46 -07:00
Ronald S. Bultje
36c3a67c20 Remove full-pixel-related code.
This is a VP8-only feature (part of profile 3) that is unsupported in
VP9.

Change-Id: I78016eede8d9c834d44d4c517f3e8b8fc2a378b1
2013-04-05 12:50:19 -07:00
Dmitry Kovalev
421baef49e Small cleanup inside setup_loopfilter function.
Change-Id: If7fa8aea02f26c2c2bb5daf4e65c3e661d7031ca
2013-04-05 12:48:48 -07:00
Dmitry Kovalev
dca8ad178c Renaming sb32_coded and sb64_coded fields.
Renaming sb32_coded to prob_sb32_coded and sb64_coded to prob_sb64_coded.

Change-Id: I6de5cad00a57c3e066d53467f8c38cb6073dce11
2013-04-02 18:21:55 -07:00
Ronald S. Bultje
790fb13215 Use above/left (instead of previous in scan-order) as token context.
Pearson correlation for above or left is significantly higher than for
previous-in-scan-order (absolute values depend on position in scan, but
in general, we gain about 0.1-0.2 by using either above or left; using
both basically just makes this even better). For eob branch skipping,
we continue to use the previous token in scan order.

This helps about 0.9% on derf after re-training on a limited data set.
Full re-training and results on larger-resolution clips are pending.

Note that this commit breaks trellis, so we can probably get further
gains out of it by fixing trellis at some later point.

Change-Id: Iead68e296fc3a105cca746b5e3da9555d6010cfe
2013-03-26 16:46:09 -07:00
John Koleszar
441e2eab1b Add an in-loop deringing experiment
Adds a per-frame, strength adjustable, in loop deringing filter. Uses
the existing vp9_post_proc_down_and_across 5 tap thresholded blur
code, with a brute force search for the threshold.

Results almost strictly positive on the YT HD set, either having no
effect or helping PSNR in the range of 1-3% (overall average 0.8%).
Results more mixed for the CIF set, (-0.5 min, 1.4 max, 0.1 avg).
This has an almost strictly negative impact to SSIM, so examining a
different filter or a more balanced search heuristic is in order.

Other test set results pending.

Change-Id: I5ca6ee8fe292dfa3f2eab7f65332423fa1710b58
2013-03-26 08:23:24 -07:00
Dmitry Kovalev
56f3a2c663 Code cleanup: lower case variable names.
Renaming Width to width, Height to height and Version to version in
several structs and function signatures.

Change-Id: I084c3f7e747cb2ce3345aff27a3dff9b13a87543
2013-03-20 16:41:30 -07:00
John Koleszar
8a3f55f2d4 Replace scaling byte with explicit display size
If the intended display size is different than the size the frame is
coded at, then send that size explicitly in the bitstream. Adds a new
bit to the frame header to indicate whether the extra size fields
are present.

Change-Id: I525c66f22d207efaf1e5f903c6a2a91b80245854
2013-03-18 12:02:20 -07:00
Deb Mukherjee
a28139c849 Continued experiment with nonzero count
Adds probability updates for extra bits for the nzcs, code for
getting nzc stats, plus some minor cleanups and fixes.

Change-Id: If2814e7f04fb52f5025ad9f400f3e6c50a00b543
2013-03-08 16:37:08 -08:00
Deb Mukherjee
eb6ef2417f Coding con-zero count rather than EOB for coeffs
This patch revamps the entropy coding of coefficients to code first
a non-zero count per coded block and correspondingly remove the EOB
token from the token set.

STATUS:
Main encode/decode code achieving encode/decode sync - done.
Forward and backward probability updates to the nzcs - done.
Rd costing updates for nzcs - done.
Note: The dynamic progrmaming apporach used in trellis quantization
is not exactly compatible with nzcs. A suboptimal approach has been
used instead where branch costs are updated to account for changes
in the nzcs.

TODO:
Training the default probs/counts for nzcs

Change-Id: I951bc1e22f47885077a7453a09b0493daa77883d
2013-03-07 07:20:30 -08:00
Ronald S. Bultje
111ca42133 Make superblocks independent of macroblock code and data.
Split macroblock and superblock tokenization and detokenization
functions and coefficient-related data structs so that the bitstream
layout and related code of superblock coefficients looks less like it's
a hack to fit macroblocks in superblocks.

In addition, unify chroma transform size selection from luma transform
size (i.e. always use the same size, as long as it fits the predictor);
in practice, this means 32x32 and 64x64 superblocks using the 16x16 luma
transform will now use the 16x16 (instead of the 8x8) chroma transform,
and 64x64 superblocks using the 32x32 luma transform will now use the
32x32 (instead of the 16x16) chroma transform.

Lastly, add a trellis optimize function for 32x32 transform blocks.

HD gains about 0.3%, STDHD about 0.15% and derf about 0.1%. There's
a few negative points here and there that I might want to analyze
a little closer.

Change-Id: Ibad7c3ddfe1acfc52771dfc27c03e9783e054430
2013-03-04 16:34:36 -08:00
John Koleszar
77f88e97fa Combined motion compensation with scaled predictors
This patch extends the previous support for using references of a
different resolution in ZEROMV mode to all inter prediction modes.
Subpixel based best-mv scoring is disabled when the reference frame
differs in resolution from the current frame.

Change-Id: Id4dc3e5e6692de98d9857fd56bfad3ac57e944ac
2013-02-27 08:22:39 -08:00
John Koleszar
eb939f45b8 Spatial resamping of ZEROMV predictors
This patch allows coding frames using references of different
resolution, in ZEROMV mode. For compound prediction, either
reference may be scaled.

To test, I use the resize_test and enable WRITE_RECON_BUFFER
in vp9_onyxd_if.c. It's also useful to apply this patch to
test/i420_video_source.h:

  --- a/test/i420_video_source.h
  +++ b/test/i420_video_source.h
  @@ -93,6 +93,7 @@ class I420VideoSource : public VideoSource {

     virtual void FillFrame() {
       // Read a frame from input_file.
  +    if (frame_ != 3)
       if (fread(img_->img_data, raw_sz_, 1, input_file_) == 0) {
         limit_ = frame_;
       }

This forces the frame that the resolution changes on to be coded
with no motion, only scaling, and improves the quality of the
result.

Change-Id: I1ee75d19a437ff801192f767fd02a36bcbd1d496
2013-02-26 23:54:23 -08:00