Commit Graph

26 Commits

Author SHA1 Message Date
Ronald S. Bultje
07b8707532 mbgraph: remove unused function, and make local function static.
Change-Id: I295c7bcf13b630cb9395585ede7311d85d785f25
2012-10-29 17:59:45 -07:00
Jim Bankoski
118b2fe962 Remove variance vtable from rtcd
Change-Id: Idd2722a538423b451e1e3495f89a7141480493d6
2012-10-21 20:47:57 -07:00
Jim Bankoski
7c15c18c5e removed the recon rtcd invoke macro code (unrevert)
This reinstates reverted commit 2113a83157

Change-Id: I9a9af13497d1e58d4f467e3e083fddf06b1b786c
2012-10-16 12:02:31 -07:00
Jim Bankoski
f9d5f86643 Revert "removed the recon. rtcd invoke macro code"
This reverts commit 2113a83157
2012-10-13 20:29:04 -07:00
Jim Bankoski
2113a83157 removed the recon. rtcd invoke macro code
Code clean up - removed rtcd

Change-Id: Id963ecf53c370b1d99484ef18d6befeed7e0c748
2012-10-13 18:49:44 -07:00
Deb Mukherjee
00f9eb6590 New motion vector entropy coding
Adds a new experiment with redesigned/refactored motion vector entropy
coding. The patch also takes a first step towards separating the
integer and fractional pel components of a MV. However the fractional
pel encoding still depends on the integer pel part and so they are
not fully independent. Further experiments are in progress to see
how much they can be decoupled without affecting performance.
All components including entropy coding/decoding, costing for MV
search, forward updates and backward updates to probability tables,
have been implemented.

Results so far:
derf: +0.19%
std-hd: +0.28%
yt: +0.80%
hd: +1.15%

Patch: Simplifies the fractional pel models:
derf: +0.284%
std-hd: +0.289%
yt: +0.849%
hd: +1.254%

Patch: Some changes in the models, rebased.
derf: +0.330%
std-hd: +0.306%
yt: +0.816%
hd: +1.225%

Change-Id: I646b3c48f3587f4cc909639b78c3798da6402678
2012-09-06 08:28:21 -07:00
Daniel Kang
e5cc24cc2e Fix valgrind error which causes non-deterministic results.
Error was introduced in bf474e170f

Change-Id: I55bf114a1938c3a8869d8ff49cbe076eb9e83ea0
2012-08-16 11:04:34 -07:00
Daniel Kang
bf474e170f Refactor vp8_build_inter16x16_predictor functions
Change-Id: I4fceefe76b14bd38a358dc4356708f7981bab339
2012-08-09 09:48:36 -07:00
Daniel Kang
1099f368e3 clamp_mv_min_max -> vp8_clamp_mv_min_max
It's now used in more places

Change-Id: I63f8e1d827404e0b4f203bdb1df361e565d0779d
2012-08-07 16:41:58 -07:00
Deb Mukherjee
2af5473a90 Merging in high_precision_mv experiment
Merged in the high_precision_mv experiment to make it easier
to work on new mv encoding strategies. Also removed
coef_update_probs3().

Change-Id: I82d3b0bb642419fe05dba82528bc9ba010e90924
2012-08-03 13:38:49 -07:00
John Koleszar
c6b9039fd9 Restyle code
Approximate the Google style guide[1] so that that there's a written
document to follow and tools to check compliance[2].

[1]: http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml
[2]: http://google-styleguide.googlecode.com/svn/trunk/cpplint/cpplint.py

Change-Id: Idf40e3d8dddcc72150f6af127b13e5dab838685f
2012-07-17 11:46:03 -07:00
Adrian Grange
bbc926dca2 Added Prediction Filter to Mode Selection
Added the ability to optionally filter the prediction data
when inter modes are selected (excludes SPLITMV, for now).

The mode selection loop considers both the filtered and
non-filtered prediction data when choosing mode. The filter
can be turned on/off at the frame-level, or signaled for
each MB.

Change-Id: I1b783c71d95a361ab36c761b07e8a6b06bc36822
2012-06-27 14:51:41 -07:00
Ronald S. Bultje
0b8a95a0b2 Rewrite reference frame costing in the RD loop.
I now see I didn't write a very long description, so let's do it
here then. We took a pretty big quality hit (0.1-0.2%) from my
recent fix of the inversion of arguments to vp8_cost_bit() in the
RD reference frame costing. I looked into it and basically the
costing prevented us from switching reference frames. This is of
course silly, since each frame codes its own prob_intra_coded, so
using last frame cost indications as a limiting factor can never
be right.

Here, I've rewritten that code to estimate costings based partially
on statistics from progress on current frame encoding. Overall,
this gives us a ~0.2%-0.3% improvement over what we had previously
before my argument-inversion-fix, and thus about ~0.4% over current
git (on derf-set), and a little more (0.5-1.0%) on HD/STD-HD/YT.

Change-Id: I79ebd4ccec4d6edbf0e152d9590d103ba2747775
2012-05-15 15:32:44 -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
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
e41e5ce5ad Various bug fixes related to high precision mv
Change-Id: Ie5a7c87d71bd4a541463b68704620d89cec142cf
2012-03-01 03:10:21 -08:00
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
Paul Wilkins
f0459549a6 Reference frame prediction:
Extended prediction and coding of reference frame where
a subset of options are flagged as available at the segment level.

Updated copyright notices.

Switch to SAD in mbgraph code as SATD problematic for the
foreground and background separation as it can ignore large DC shifts.

Change-Id: I661dbbb2f94f3ec0f96bb928c1655e5e415a7de1
2012-02-03 12:44:45 +00:00
Deb Mukherjee
6fa47a5f16 Adds support for enhanced interpolation for subpel motion
using an 8-tap filter.

The results with 3 different 8-tap filters on the derf set are in:
http://www.corp.google.com/~debargha/vp8_results/enhinterp.html
The one that gives the most gain achieves an overall gain of about
0.6%. The results for a set of 12 hd (720p) videos are in:
http://www.corp.google.com/~debargha/vp8_results/enhinterp_hd.html
with max gain of 0.55% with the same filter. The best filter apparently
achieves the best trade-off between pass band ripple and stop band
attenuation.

Change-Id: I919e28ae245c0493147fa0864f8c9d048a9dd530
2012-01-26 10:24:47 -08:00
Paul Wilkins
bd5f384bef Possible divide by 0 error.
Put traps to prevent two possible divide by 0 errors.

Change-Id: Ia415b945244253dcdd12f54f1f157f9ca8c94d6b
2012-01-18 11:10:51 +00:00
Paul Wilkins
cf561bad1d Rate control on static scenes plus Y2dc delta Q fix.
A problem can arise on static clips with force key frames where
attempts to avoid popping lead to a progressive reduction in key
frame Q that ultimately may lead to unexpected overspend against
the  rate target.

The changes in this patch help to insure that in such clips the
quality of the key frames across the clip is more uniform (rather
than starting bad and getting better - especially at low target rates).

This patch also includes a fix that removes a delta on the Y2DC
when the baseline q index < 4 as this is no longer needed.

There is also a fix to try and prevent repeat single step Q adjustment in
the recode loop leading to lots of recodes, especially where the use
of forced skips as part of segmentation has made the impact of Q on
the number of bits generated much smaller.

Patch 2: Amend "last_boosted_qindex" calculation for arf overlay frames.

Change-Id: Ia1feeb79ed8ed014e4239994fcf5e58e68fd9459
2012-01-17 17:42:46 +00:00
Christian Duvivier
e4ca542a3b Fix more warnings.
Change-Id: Ifadf65026a11bdb5d39840748613880bcfb364bb
2011-12-22 16:33:06 -08:00
Adrian Grange
95b4cf059c Fix out of bounds read in update_mbgraph_frame_stats
update_mbgraph_frame_stats used xd->mode_info_context
before it had been setup, resulting in potentially
random accesses of uninitialized memory.

This fix allocates a local MODE_INFO structure to hold
the data generated in the function.

Change-Id: Ic9e75610008ce0e2d690e8e583c21582fee6fc45
2011-12-09 12:47:57 -08:00
Ronald S. Bultje
82733643ca mbgraph: fix invalid memory access if motion vectors are too big. 2011-11-28 12:39:38 -08:00
Paul Wilkins
23701f4f87 Segmentation Features;
Only encode sign bit for feature data that can have a sign.

Tweaks to the test segmentation rules so that it now actually gives
a net benefit on the derf set of about 0.4% though much higher
on some clips at the low end.

Change-Id: I8e61f1aebf41c9037db7e67e2f8975aa18a0c986
2011-10-24 17:06:29 +01:00
Paul Wilkins
01ce04bc06 Further segment feature extensions.
This quite large check in includes the following:

Merge in some code from Ronald (mbgraph.c) that scans a Gf/arf group.
This is used as a basis for a simple segmentation for the normal frames
in a gf/arf group. This code also uses satd functions from Yaowu.

Adds functionality for coding the latest possible position of an EOB for
blocks in the segment. (Currently 0-15 only, hence just for 4x4 dct).
Where the EOB position is 0 this acts like "skip" and the normal coding
of skip at the per mb level is disabled.

Added functions (seg_common.c) for setting and reading segment feature
elements. These may want to be optimized away at some point but while the
mecahnism is in a state of flux they provide a single location for making
changes and keep things a bit cleaner.

This is still proof of concept code. Currently the tested feature set:-

Quantizer,
Loop Filter level,
Reference frame,
Prediction Mode,
EOB end stop.

TBD:-

Add functions for setting and reading the feature data with range
and validity checking.

Handling of signed and unsigned feature data. At the moment all is assumed
to be signed and a sign bit is coded but many cannot be negative.

Correct handling of EOB feature with intra coded blocks.

Testing/trapping of legal/illegal ref frame and mode combinations.

Transform size switch plus merge and test with 8c8 DCT work

Merge and test with Sumans Segmenation coding optimizations

Change-Id: Iee12e83661c7abbd1e0ce6810915eb4ec35e2d8e
2011-10-24 15:52:18 +01:00