Commit Graph

2052 Commits

Author SHA1 Message Date
Adrian Grange
1cc406ab4a Added update of mode context pointers in decoder
With the NEWENTROPY experiment enabled encoding certain clips
produced invlid bitstreams, or files that had a high degree
of artefacts.

This was the results of pointers in MACROBLOCKD not being
setup correctly (mode_info_context and prev_mode_info_context).

Change-Id: Ice13e1efa8bd122997d2f8f3f1e761c6c16e0403
2012-04-18 13:48:06 -07:00
Adrian Grange
1ea2ad1e86 Merge "Added save coding context & modified MV bounds" into experimental 2012-04-18 16:21:16 +00:00
Yaowu Xu
bd49603be4 Merge "Added intra mode probabilites into coding_context" into experimental 2012-04-17 18:37:23 +00:00
Yaowu Xu
31afc77063 Added intra mode probabilites into coding_context
These contexts need to be saved and restored for recode, otherwise
encoder/decoder mismatch happens for some clips (eg._mobcal 720p)

Change-Id: Ic65cfa0bf56ed0472ecab962ce31394d59d344bf
2012-04-17 09:29:27 -07:00
Deb Mukherjee
bb4ed8d8a3 Bug fix introduced from a recent refactoring of skip coding.
Change-Id: Iccd0f09a4db02a2bad644deb3c76189c5f5612a3
2012-04-16 11:38:15 -07:00
Adrian Grange
fa589adc5f Added save coding context & modified MV bounds
Added code to save the coding context in vp8_rd_pick_inter_mode
when the coding mode is forced to ARF(0,0).

Also, modified the MV bounds computation to comply with the
change in MV border from 32 to 64 pixels.

Change-Id: I96963a6f5f4d04ce84c807ae11e0635177c3ad6c
2012-04-13 10:26:49 -07:00
Deb Mukherjee
237718dcbd Turning off interpolation filter selection
Turning off the interpolation filter selection based on edge
proportion. This heuristics has not been working as well as
expected and I have started a more rigorous investigation into
this. We can turn this off for now since it is unnecessarily
slowing things down.

Rebase.

Change-Id: Ic5958b2b3a35ec2d8eb73b6d81617ca8fbe07e74
2012-04-12 09:27:25 -07:00
Yaowu Xu
636b2f385e a set of minor fixes
This commit tries to address an issue related to the oddity shown on
HD _mobcal clip, where some rather ugly blocks shown in the second
frame at low-mid bit rates if the third frame is not made a key frame
by he encoder. The fixes include: 1)  made calls to sad_16x16 to be
consistent with function prototype. 2) remove the error bias to intra
and golden in mbgraph search. 3) changed the error accumulation on
inter_segment encoding to avoid potential out-of-range. 1) has no
effect on encoding results.

Encoding test show that the overall effect of the commit helps about
.2%(HD) to .3%(cif)

Change-Id: I930975a2d0c06252f01c39e0a02351529774e30b
2012-04-12 13:41:54 +01:00
Yaowu Xu
d6f4b71d9f Adjust the key frame placement condition
The commit removed a limit on key frame detection, which caused a big
drop in all metric measurements for standard HD clip such as _mobcal.

This single change helps two standard HD clips by a huge amount, which
help the overall std-hd set by 2.4% (glb psnr), 0.9% (avg_psnr), 2.1%
(vpxssim).

In the result page:
http://pafr9.prod.google.com:26163/?/cns/rc-d/home/on2-prod/sunkaras/borg-test/yaowu

2012_04_02_1649_yaowu_bugfix_std-hd
2012_04_03_1452_yaowu_hump_std-hd
represent the encoding test results and std-hd set prior and after this
commit respectively.

Change-Id: Ie4313e317c737ea0e699c3a7919c1376744baa1a
2012-04-12 11:46:24 +01:00
Yaowu Xu
d56acae660 changed function prototype for macro_block_yrd
This commit has made macro_block_yrd_8x8 and macro_block_yrd_8x8 to
take same parameters. It also removed a few unnecessary shifts that
has the potential to create out-of-range distortion values.

Change-Id: I4ec5afb307c3685c2a67a07c2850f0927d214455
2012-04-12 11:40:18 +01:00
Paul Wilkins
d6ac213ce6 Delete unused function.
Deleted check_gf_quality().

Change-Id: If75fbd84accb1f6471ad6ea6ff2b65ae99976f5d
2012-04-11 17:14:46 +01:00
Paul Wilkins
13c6d1a8c8 Refactoring of encode loop and bitstream packing
Some code re-factored / moved to allow the main
pack operation inside the recode loop so  that the
size estimate is accurate.

Deletion of some redundant code relating to one pass.

Aproximate improvement over March 27 code base:
Derf 0.0%, YT 0.5%, YThd 0.3% Std_hd 0.25%

Change-Id: Id2d071794ab44f0b52935f6fcdb5733d09a6bb86
2012-04-11 15:44:14 +01:00
Paul Wilkins
f2ec452fbc Changes to costing of skip.
Update the costing of skip in the recode loop and rd code.

Change-Id: I2e5ebbd7ddf201212b32441321e12626cd0423e9
2012-04-11 14:37:48 +01:00
Paul Wilkins
a3392d5718 T8x8 zbin and rate control changes.
Some adjustments to zbin for t8x8.
Changes to rules for sizing forced key frames.
Some extra stats output in tmp.stt.

Approximate  gain on YT-hd set 0.5%

There are still issues in sizing key frames and gf/arf frames
when the image is largely static. These in part relate to
problems with cost estimates in the recode loop.

Change-Id: I6f0159dc8a8faeab4115a19c668d442491619a68
2012-04-11 13:13:28 +01:00
Adrian Grange
9daf3154db Superblock encoding order
This is the first patch to add superblock (32x32) coding
order capabilities. It does not yet do any mode selection
at the SB level, that will follow in a further patch.

This patch encodes rows of SBs rather than
MBs, each SB contains 2x2 MBs.

Two intra prediction modes have been disabled since they
require reconstructed data for the above-right MB which
may not have been encoded yet (e.g. for the bottom right
MB in each SB).

Results on the one test clip I have tried (720p GIPS clip)
suggest that it is somewhere around 0.2dB worse than the
baseline version, so there may be bugs.

It has been tested with no experiments enabled and with
the following 3 experiments enabled:
  --enable-enhanced_interp
  --enable-high_precision_mv
  --enable-sixteenth_subpel_uv
in each case the decode buffer matches the recon buffer
(using "cmp" to compare the dumped/decoded frames).
Note: Testing these experiments individually created
errors.

Some problems were found with other experiments but it
is unclear what state these experiments are in:
  --enable-comp_intra_pred
  --enable-newentropy
  --enable-uvintra

This code has not been extensively tested yet, so there
is every likelihood that further bugs remain. I also
intend to do some code cleanup & refactoring in tandem
with the next patch that adds the 32x32 modes.

Change-Id: I1eba7f740a70b3510df58db53464535ef881b4d9
2012-04-11 10:40:57 +01:00
Deb Mukherjee
78ecbc98e4 Bug fix in probability update savings computation
Found this bug while tracking down some anomalies in my experiments.
Since vp8_cost_one and vp8_cost_zero return unsigned int, the
bit shift by 8 will be incorrect if the value is negative.
I am cautiously optimistic that this fix will make the prob
updates more correct and somewhat improve results across the board.
But the update probabilities will need to be retuned I think.

Patch 2: Adding more of the same fixes using a macro.

Change-Id: I1a168f040e74e8c67e7225103b1c2af9a611da49
2012-03-29 08:39:02 -07:00
Ronald S. Bultje
9f900a1c64 Only enable compound prediction if multiple reference frames are present.
Change-Id: Ia52ac825400eb83ff663e3a05a3fe0b3526bac9a
2012-03-22 10:20:17 -07:00
Yaowu Xu
2823173ee0 enable 8x8 transform for MBs in intra frames
When ac_yquant>171, a key frame is enabled to use 8x8 transform. In
such case, MBs with DC_PRED or TM_PRED are selected to use T8x8. This
change helped the full STD-HD set by ~.1% or so, which is reasonable
considering how often key frame occurs in these encodings.

Change-Id: Id17009ef6327252177b19e6bf0d6628827febaf1
2012-03-21 12:25:44 -07:00
Paul Wilkins
c88d335f7d Only support improved quant
Deprecate fast quant and strict_quant code.
Small effect on quality as fast was used in first pass but the
effect is basically neutral across the derf set.

The rationale here is to reduce the number of code paths for
now to make experimentation easier. Optimized and fast code
options can be re-introduced later along with other  encode
speed options.

Change-Id: Ia30c5daf3dbc52e72c83b277a1d281e3c934cdad
2012-03-21 18:22:33 +00:00
Paul Wilkins
36af2035c8 Merge Exact Quant
Change-Id: Id2412a7f24a7c1016ec9fc3b9b0fbd16871f374a
2012-03-21 17:57:09 +00:00
Deb Mukherjee
475d5d5664 Making subpel filters switchable at frame level
Various refactoring to make the subpel motion compensation
filters switchable by a frame level field.
Two types of 8-tap filters are supported in addition to the existing
bilinar and sixtap filters. One is the default 8-tap and the
other has a sharper cut-off for use with frames with substantial
edge content.

Patch 2: Added a preliminary strategy for filter selection based on
edginess detecton. Also includes some filter changes.

Change-Id: I866085bda5ae143cfdf2ec88157feaabdf7bd63a
2012-03-21 09:17:22 -07:00
Deb Mukherjee
57d953479b Adding contextual coding of mb_skip_coeff flag.
Using contextual coding of the mkb_skip_coeff flag using the
values of this flag from the left and above. There is a small
improvement of about 0.15% on Derf:
http://www.corp.google.com/~debargha/vp8_results/mbskipcontext.html

Refactored to use pred_common.c by adding a new context type.

Results on HD set (about 0.66% improvement):
http://www.corp.google.com/~debargha/vp8_results/mbskipcontext_hd.html

Incliding missing refactoring to use the pred_common utilities.

Change-Id: I95373382d429b5a59610d77f69a0fea2be628278
2012-03-21 03:55:44 -07:00
Yaowu Xu
21d3612a2f added clamp for 2nd motion vector
The commit added a clamp to the 2nd motion vector used in compound
prediction to insure mv within UMV borders. The clamp is similar to
that of the first motion vector except that No SPLITMV is ever used
for the 2nd motion vector.

Change-Id: I26dd63c304bd66b2e03a083749cc98c641667116
2012-03-14 18:53:26 -07:00
Yaowu Xu
f798f9e465 Added encode/decode recon buffer match test to vpxenc
The commit added a new command line option --test-decode to vpxenc.
The option enables encoder to decode compressed frames and test recon
buffers from the decode against those from encode for mismatch.

There are a few limitations on this option currently, one of them
being the match test is not done on a number of lagged frames at
the end of an encoding.

Change-Id: I80c29b46dcdcea9f48107a506b235743068862fe
2012-03-14 18:46:12 -07:00
Yaowu Xu
ea43ba4aee fixed a bug of context overwritten by key frame recoding
The recoding loop save and restore frame coding context for recodes.
However in recoding of key frames, some of the coding context saved
was stale from last encoded inter frame. The save/restore sometimes
overwrites the re-inintialized coding context with saved context
from last frame, resulting in encoder/decoder mismatch

Change-Id: I354ae2f71074d142602d51d06544c05a2462caaf
2012-03-14 17:29:39 -07:00
Yaowu Xu
03d5d69368 Added option to skip first n frame to vpxenc
this commit added a command line option to skip first n frames from
input file to facilitate debugging and testing.

Change-Id: I4ffc5f85fa7e193ea4bdee08cb236717de8beef1
2012-03-14 07:54:12 -07:00
Yaowu Xu
3f5feb7d13 fixed .mk files to reflect add/remove of a header file
In a previous commit, the duplicate of headerfile defaultcoefcounts.h
was identified. This commit updates the .mk file to ensure configure
and make works properly for all platforms.

Change-Id: I31a39c809a734ba438ee53db700f252e9a03eddd
2012-03-12 14:51:54 -07:00
Yaowu Xu
8cf28d346d Changed MAX_PSNR to be consistent with internal stats
The maximum psnr has a marginal impact on the overall output in high
quality encodings, the change will make sure the psnr output to be
consistent with encoder internal stats.

Change-Id: I35cf2f85008ec127a7d91c9eb69fa7811798ae32
2012-03-07 16:14:54 -08:00
Yaowu Xu
64439c2b77 removed duplicate a head file
Removed the copy in encoder and changed to use the one in common

Change-Id: Ief0985a50ffd6053a269638fd4816b055ca273ec
2012-03-07 07:21:46 -08:00
Paul Wilkins
68033ca472 Snapshot candidate
Pulled out super block code for the snapshot as this
is not quite ready and will need an extensive re-merge.

Change-Id: I436369b511257447a7b0ea064016cb63f5011849
2012-03-07 11:24:33 +00:00
Jim Bankoski
157f15e1d3 Imported a change from stable branch
https://gerrit.chromium.org/gerrit/#change,17319 fixes cost estimating
to take skip_eob into account. No quality difference seen on derf set
tests, but about .4% gain on STD_HD set.

Change-Id: Ic5fe6d35ee021e664a6fcd28037b8432a0e470ca
2012-03-06 12:20:34 -08:00
Yaowu Xu
98bf413b4b fix a compiling error when CONFIG_COMP_INTRA_PRED not defined
Change-Id: I4159ff365953598d9c9bc3ecacfb5c5f4a315b45
2012-03-06 09:52:15 -08:00
Ronald S. Bultje
c3f5b2931b Use per-MB compound intra prediction.
This gives a modest gain on derf overall, although at low bitrates the
cost is still too high, so this can be improved further.

Patch 2. Re-base and fix 80 column issues

Change-Id: Ida2f9fa3fe75370669f6a27b37108dc602231c63
2012-03-05 15:23:10 +00:00
Yaowu Xu
6898e8b7ab Changed how UV r/d estimates are done for Intra Modes
The commit changed to compute UV intra RD estimates for 4x4 and 8x8
separately to be used in mode decision for MB modes associated with
the appropriate transform size respectively. Now finally after many
other changes related 8x8 quantizer zbin boost and zbin_mode_boost,
this change overall helps the HD(with 8x8) by around ~.13%.
(avg .13%  glb .13% ssim .17%)

The commit also has a few changes for eliminating compiler warnings.

Change-Id: Ibab35dad44820c87e6b44799c66f8d519cc37344
2012-03-05 13:16:41 +00:00
Yaowu Xu
eaa955ba98 Fixed zbin_mode_boost initialization
The commit added the correct Zbin_mode_boost initialization based on
Intra Mode before using rate distortion to pick UV intra mode.

Change-Id: I8e57878ff356a06672f6fa2431be860bf9b9a5c7
2012-03-05 13:10:49 +00:00
Yaowu Xu
848bccabd5 refactored code that checks if a macroblock is skippable
Change-Id: I4ea6d819bbbde312792c4f813ab63ea50cf0cd1d
2012-03-05 11:30:43 +00:00
Paul Wilkins
a0be3faa6e Allow for frame overheads in min frame bandwidth.
Change-Id: I6ade229ff400fe492709010ac5bada37f8afa73e
2012-03-05 11:25:44 +00:00
Yaowu Xu
89ee68b1f7 Merge t8x8 experiments
Change-Id: I8e9b6b154e1a0d0cb42d596366380d69c00ac15f
2012-03-01 12:59:11 -08:00
Yaowu Xu
3ceb43104f disable usage of 8x8 for resolution below 360p
need further investigation on some odd behavior on one  youtube clip

Change-Id: Iec477986a86b54ef26df2ef69d2f9484e2d1a043
2012-03-01 11:30:49 -08:00
Deb Mukherjee
e41e5ce5ad Various bug fixes related to high precision mv
Change-Id: Ie5a7c87d71bd4a541463b68704620d89cec142cf
2012-03-01 03:10:21 -08:00
Paul Wilkins
2ad7a4a271 Bug fix in vp8_estimate_entropy_savings()
Incorrect scaling of savings for t8x8.

Change-Id: If01e08f8c73faa73afc3c70e501e6acc54d7e26f
2012-03-01 01:42:02 +00:00
Yaowu Xu
d8670b3c2e Fix compiling issue when CONFIG_HIGH_PRECISION_MV is defined
Change-Id: I3b8a230d5b119910e6a6767331a4d97768089355
2012-02-28 17:45:46 -08:00
Ronald S. Bultje
921b1c3c94 Rename "dual" prediction to "compound" prediction.
Change-Id: Ibcd2b9b247ff9f83331dac47f91ec285e8955ff1
2012-02-28 17:43:46 -08:00
Ronald S. Bultje
d476165107 Compound intra prediction (b_pred/4x4 only, for now),
Also remove duplicate build_intra_predictors_mby/uv().

Change-Id: I78607e7304952a9b962a5b25af9bb9c48692187b
2012-02-28 17:41:03 -08:00
Yaowu Xu
af5c774b5c Correct zbinboost lookup for 8x8 quantizer
The commit fixed a problem where 8x8 regular quantizer was using the
4x4 zbinboost lookup table that only has 16 entries at each Q. The
commit assigned a uniform zbin boost value for all cases that there
are more than 16 consective zeros. The change only affects MBs using
8x8 transform. The fix has a slightly positive impact on quality.

Test results:
http://www.corp.google.com/~yaowu/no_crawl/hd_fixzbinb.html
(avg psnr: .26% glb psnr: .21% ssim: .28%)

Results on cif size clip are also positive even though gain is smaller
http://www.corp.google.com/~yaowu/no_crawl/derf_fixzbinb.html

Change-Id: Ibe8f6da181d1fb377fbd0d3b5feb15be0cfa2017
2012-02-28 17:17:47 -08:00
Paul Wilkins
dc825f1e2b Merge "Merge new loop filter." into experimental 2012-02-28 23:28:04 +00:00
Deb Mukherjee
3e1cad9c69 Initial refactoring of high_precision mv code.
This is the first patch for refactoring of the code related to
high-precision mv, so that 1/4 and 1/8 pel motion vectors can
co-exist in the same bit-stream by use of a frame level flag.
The current patch works fine for only use of 1/4th and
only use of 1/8th pel mv, but there are some issues with the
mode switching in between. Subsequent patches on this change Id
will fix the remaining issues.

Patch 2: Adds fixes to make sure that multiple mv precisions can
co-exist in the bit-stream. Frame level switching has been tested
to work correctly.

Patch 3: Fixes lines exceeding 80 char

Patch 4:
http://www.corp.google.com/~debargha/vp8_results/enhinterp.html

Results on derf after ssse3 bugfix, compared to everything
enabled but the 8-tap, 1/8-subpel and 1/16-subpel uv. Overall the
gains are about 3% now. Hopefully there are no more bugs lingering.
Apparently the sse3 bug affected the quartel subpel results more than
the eighth pel ones (which is understandabale because one bad predictor
due to the bug, matters less if there are a lot more subpel options
available as in the 1/8 subpel case).
The results in the 4th column correspond to the current settings.
The first two columns correspond to two settings of adaptive switching
of the 1/4 or 1/8 subpel mode based on initial Q estimate. These
do not work as good as just using 1/8 all the time yet.

Change-Id: I3ef392ad338329f4d68a85257a49f2b14f3af472
2012-02-28 15:09:20 -08:00
Yaowu Xu
3d93ae521c Merge "Try to enable 8x8 tranform for smaller resolution" into experimental 2012-02-28 22:31:03 +00:00
Paul Wilkins
19b9d28f70 Merge new loop filter.
Merge of the NEWLPF configuration experiment so it is always on.

Change-Id: I7054772b6eab28bad1ff807bfa54d98f83de9308
2012-02-28 20:58:52 +00:00
Yaowu Xu
42891098f3 Try to enable 8x8 tranform for smaller resolution
The commit overall on derf test is break even to very slightly positive
comparing to all 4x4 transform.

Change-Id: I2a7c19599aa54c2d3a5b35db0dc891ba8a6a2b26
2012-02-28 11:49:12 -08:00