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354 Коммитов

Автор SHA1 Сообщение Дата
James Zern f2dc38256d Revert "test_libvpx: disable pthreads in gtest"
This reverts commit 90a9900abb

Seems to break the Mac build:
src/include/gtest/internal/gtest-port.h:1208:: pthread_mutex_lock(&mutex_)failed with error 22
Abort trap: 6

Change-Id: Icbe31161d7c27f1b0a28d33409e7712430bbf0ae
2013-06-20 12:49:15 -07:00
James Zern 90a9900abb test_libvpx: disable pthreads in gtest
currently threading is internal to libvpx so thread safety is unneeded
in libgtest -- visual studio builds already operate in this way as they
do not have pthread.h available by default.

this removes an unconditional link to libpthread using $(extralibs)
should libvpx require it.

Change-Id: Ieae1d693406653a54b54fba818c598836797d33b
2013-06-19 11:50:20 -07:00
John Koleszar d0ed677a34 Merge branch 'master' into experimental
Change-Id: Ie648398b82f7311143709f55c0e30ba452f50eff
2013-06-11 16:29:28 -07:00
John Koleszar 44db42c114 Merge the new loopfilter experiment
Change-Id: I524ba98841f2e1850e3276ac365c501cea31546d
2013-06-10 12:30:12 -07:00
John Koleszar 736c7b804a Merge "Reimplementation of loop filter" into experimental 2013-06-06 17:34:26 -07:00
John Koleszar 043d348aae Reimplementation of loop filter
This version of the loop filter supports non-4:2:0 subsampling and
a fourth plane, as well as changing the filtering order to be more
friendly to hardware implementations.

The filters are applied first to all vertical edges within the
64x64 SB, followed by the top horizontal edge and any internal
horizontal edges. Since filtering is applied on each 4x4 edge
serially, a dependency is created from filtering one block edge
to the next. It would be possible to remove this depencnecy by
building all filtering decisions from the unfiltered
reconstruction data.

Change-Id: I08f3e9683eb7bded8a76651cbc50fc0dfdd05fa7
2013-06-06 08:45:45 -07:00
Paul Wilkins aaf61dfbca Merge "Patch to remove implicit segmentation." into experimental 2013-05-31 02:56:20 -07:00
Paul Wilkins 1b103f250f Patch to remove implicit segmentation.
This patch removes the implicit segmentation
experiment from the code base as the benefits
were still unproven as of the bitstream deadline.

Change-Id: I273b99d8d621d1853eac4182f97982cb5957247e
2013-05-30 11:06:29 +01:00
Deb Mukherjee b8b3f1a46d Balancing coef-tree to reduce bool decodes
This patch changes the coefficient tree to move the EOB to below
the ZERO node in order to save number of bool decodes.

The advantages of moving EOB one step down as opposed to two steps down
in the other parallel patch are: 1. The coef modeling based on
the One-node becomes independent of the tree structure above it, and
2. Fewer conext/counter increases are needed.

The drawback is that the potential savings in bool decodes will be
less, but assuming that 0s are much more predominant than 1's the
potential savings is still likely to be substantial.

Results on derf300: -0.237%

Change-Id: Ie784be13dc98291306b338e8228703a4c2ea2242
2013-05-29 16:25:52 -07:00
Paul Wilkins 845bc13ba9 Remove loop dering experiment.
Change-Id: I1a979bf74c286b157c31bab6bdcba0494acb4918
2013-05-25 10:09:23 +01:00
Paul Wilkins 33ecd6ad54 Merge Scatter Scan experiment.
Removal from under configure flag.
A bit  renaming

Change-Id: I2213229dfe852001dfec16b149f47c52ce88f3aa
2013-05-23 13:09:27 +01:00
Jingning Han 7ac5ac52f9 Merge 4x4 block level partition into codebase
Move 4x4/4x8/8x4 partition coding out of experimental list.

This commit fixed the unit test failure issues. It also resolved
the merge conflicts between 4x4 block level partition and iterative
motion search for comp_inter_inter.

Change-Id: I898671f0631f5ddc4f5cc68d4c62ead7de9c5a58
2013-05-23 11:58:50 +01:00
Paul Wilkins 0b713f8c18 Merge CONFIG_COMP_INTER_JOINT_SEARCH.
Merge this experiment so that it is under a speed feature
flag not a configuration flag.

Change-Id: I536f7f125a4ff5149bb3a64f791e835c324535fd
2013-05-22 11:23:31 +01:00
John Koleszar ddf13be8ef Merge "Initial version of alpha channel support" into experimental 2013-05-21 17:29:51 -07:00
Martin Storsjo ad484fc6be Add support for armv7-win32-vs11
The arm assembly files are named .s after conversion, to reuse
as much of the existing makefile infrastructure for conversion to
gas format as possible. Within the generated visual studio project,
only the converted assembly sources are available, which might not
be optimal for actually developing it, but is acceptable for
just building the library.

Multithreading is disabled since the traditional win32 threading
functions aren't available on WinRT/Windows Phone 8.

Building of vpx itself and the examples succeed, while building the
tests fail due to them using functions not available in the
windows store/windows phone API subsets - therefore the unit tests
are disabled.

This works for building in Visual Studio Express 2012 for Windows
Phone, while Visual Studio Express 2012 for Windows 8 (for
"Windows Store" apps) seems to reject the vcxproj files due to
not supporting "classic style native application or managed
projects". The built static library should be compatible with that
platform though.

Change-Id: Idcd7eca60bfaaaeb09392a9cd7a02e4a670e3b30
2013-05-22 02:08:25 +03:00
Deb Mukherjee 7a645e4e12 Merging the model coef prob experiment
Merges the experiment.

Change-Id: I4eb19af6de6df6aa3a96a2e82f231d47ed9b3ae9
2013-05-21 14:44:38 -07:00
Martin Storsjo bd91bebe48 configure: Add x86*-vs10/11 targets
Change-Id: I4be8ca12ccdce86d1409b7121cff94b4784ab31c
2013-05-21 09:57:02 +03:00
John Koleszar 679e4abdd5 Initial version of alpha channel support
This is a mostly-working implementation of an extra channel in the
bitstream. Configure with --enable-alpha to test. Notable TODOs:

 - Add extra channel to all mismatch tests, PSNR, SSIM, etc
 - Configurable subsampling
 - Variable number of planes (currently always uses all 4)
 - Loop filtering
 - Per-plane lossless quantizer
 - ARNR support

This implementation just uses the same contents as the Y channel
for the A channel, due to lack of content and general pain in
playing back 4 channel content. A later patch will use the actual
alpha channel passed in from outside the codec.

Change-Id: Ibf81f023b1c570bd84b3064e9b4b8ae52e087592
2013-05-16 22:21:09 -07:00
Martin Storsjo 132422d9ab Add an option for building for arm in thumb mode
Change-Id: I5a46645064c2fe1c13287cf06c3244820b4e699e
2013-05-13 12:49:40 +03:00
Yunqing Wang 9f5811c2da Add joint motion search in comp_inter_inter mode(experiment)
In current code, motion vectors got from single prediction mode are used
in compound prediction mode directly. These motion vectors may not give
accurate prediction since they are searched independently. In this patch,
we took Pascal's suggestion, and did joint motion search in compound
prediction mode to find better motion vectors in this situation.
Test results:
Overall PSNR: 0.570%(derf), 0.918%(stdhd);
SSIM: 0.572%(derf), 1.009%(stdhd);

The encoder is a little slower. This can be improved since some c
code is used in motion search.

Change-Id: Ib30c9240f6c56c9b070867b4ca89412a76d9f3c6
2013-05-10 10:15:43 -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
Paul Wilkins 0bfcd30768 Remove enable_6tap filter experiment.
Clean out code under CONFIG_ENABLE_6TAP flag.

Change-Id: Ic45b624081181027d6ba24d55dd644c3197f9830
2013-05-07 16:13:02 -07:00
Paul Wilkins 8c1b516d10 Deprecate the newbintramode experiment.
Clean out code relating to newbintramode.

Change-Id: Ie91f4f156cdf60ce0da8ca407c1c9cb00c7d0705
2013-05-07 16:00:59 -07:00
Jingning Han cf8b5a09ed Add building blocks for partition down to 4x4
Macro ab4x4 contains experiments for recursive partition down to
4x4 block size.

Change-Id: Ic727842fa98a4df9fd51e0025a545dc76a5c76c1
2013-05-07 12:11:51 -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
John Koleszar 8dd8287e16 Y4M input support for 4:2:2, 4:4:4, 4:4:4:4
Adds a new experiment CONFIG_NON420 that allows other chroma subsamplings
to be passed to the codec. This commit allows the data to be passed from
a y4m input file through vpxenc to the codec, where they're currently
rejected. Later commits will finish support for this inside the codec.

Change-Id: Ib3aac604d8cad9e24cef395fa1067f16ba7e8e43
2013-05-06 14:35:19 -07:00
James Zern dfa2fb5230 configure: special case flag test for clang
(while still abusing the gcc targets)

Change-Id: I40f33f619ed1ee760caf23f5598587b30cf8a9ed
2013-05-03 14:01:03 -07:00
Jingning Han b0e3b3df18 Move sbsegment out of experimental list
Move rectangular superblock coding out of experimental list.

Change-Id: I96c37547d122330d666a67b4bf577ae54547857f
2013-04-24 15:19:17 -07:00
Ronald S. Bultje 94297863bf Add basic building blocks for 8x8 superblocks experiment.
Change-Id: I274a1d2e461e6ffdb106bac4ad6951692ace314e
2013-04-23 12:34:37 -07:00
Deb Mukherjee 0defc2ddb3 Removing configure option for implicit wtd pred
Change-Id: Ibe0628905925fc81bbb192651276f417c2aa7552
2013-04-22 23:24:06 -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
Paul Wilkins aa76bf3d28 Removal of CONFIG_NEW_MVREF experiment.
This experiment has failed to give much benefit but
does add complexity so deprecated.

Change-Id: Ic7b929ba706390b9907ef0b4f965bd401ca799a4
2013-04-19 11:54:02 +01:00
Yaowu Xu 421ad3f1b1 clean out experiments
that are related to using reconstructed pixel for selecting reference
motion vectors.

Change-Id: I048dfae39ca7385e344b57d46347ecc6e753e1bb
2013-04-17 11:00:46 -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
Ronald S. Bultje a3874850dd Make SB coding size-independent.
Merge sb32x32 and sb64x64 functions; allow for rectangular sizes. Code
gives identical encoder results before and after. There are a few
macros for rectangular block sizes under the sbsegment experiment; this
experiment is not yet functional and should not yet be used.

Change-Id: I71f93b5d2a1596e99a6f01f29c3f0a456694d728
2013-04-09 21:28:27 -07:00
Yaowu Xu 9780d58e94 make one_shot_q an experiment
so it is configurable to faciliate testings

Change-Id: I247b62736c3a08ec2934793959d1ae605a05efa3
2013-04-04 14:14:51 -07:00
John Koleszar 771fc832f3 Merge branch 'master' into experimental
Pick up VP8 encryption, quantization changes, and some fixes to vpxenc

Conflicts:
	test/decode_test_driver.cc
	test/decode_test_driver.h
	test/encode_test_driver.cc
	vp8/vp8cx.mk
	vpxdec.c
	vpxenc.c

Change-Id: I9fbcc64808ead47e22f1f22501965cc7f0c4791c
2013-03-27 10:46:19 -07:00
Ronald S. Bultje 513157e093 Scatter-based scantables.
This gains about 0.2% on derf, 0.1% on hd and 0.4% on stdhd. I can put
this under an experimental flag if wanted, just trying to get my patch
queue in shape.

Change-Id: Ibe1a30fe0e0b07bec4802e0f3ff0ba22e505f576
2013-03-27 09:44:45 -07:00
Deb Mukherjee 23144d2345 Implicit weighted prediction experiment
Adds an experiment to use a weighted prediction of two INTER
predictors, where the weight is one of (1/4, 3/4), (3/8, 5/8),
(1/2, 1/2), (5/8, 3/8) or (3/4, 1/4), and is chosen implicitly
based on consistency of the predictors to the already
reconstructed pixels to the top and left of the current macroblock
or superblock.

Currently the weighting is not applied to SPLITMV modes, which
default to the usual (1/2, 1/2) weighting. However the code is in
place controlled by a macro. The same weighting is used for Y and
UV components, where the weight is derived from analyzing the Y
component only.

Results (over compound inter-intra experiment)
derf: +0.18%
yt: +0.34%
hd: +0.49%
stdhd: +0.23%

The experiment suggests bigger benefit for explicitly signaled weights.

Change-Id: I5438539ff4485c5752874cd1eb078ff14bf5235a
2013-03-26 16:58:56 -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
Deb Mukherjee fd18d5dffe Modeling default coef probs with distribution
Replaces the default tables for single coefficient magnitudes with
those obtained from an appropriate distribution. The EOB node
is left unchanged. The model is represeted as a 256-size codebook
where the index corresponds to the probability of the Zero or the
One node. Two variations are implemented corresponding to whether
the Zero node or the One-node is used as the peg. The main advantage
is that the default prob tables will become considerably smaller and
manageable. Besides there is substantially less risk of over-fitting
for a training set.

Various distributions are tried and the one that gives the best
results is the family of Generalized Gaussian distributions with
shape parameter 0.75. The results are within about 0.2% of fully
trained tables for the Zero peg variant, and within 0.1% of the
One peg variant.

The forward updates are optionally (controlled by a macro)
model-based, i.e. restricted to only convey probabilities from the
codebook. Backward updates can also be optionally (controlled by
another macro) model-based, but is turned off by default. Currently
model-based forward updates work about the same as unconstrained
updates, but there is a drop in performance with backward-updates
being model based.

The model based approach also allows the probabilities for the key
frames to be adjusted from the defaults based on the base_qindex of
the frame. Currently the adjustment function is a placeholder that
adjusts the prob of EOB and Zero node from the nominal one at higher
quality (lower qindex) or lower quality (higher qindex) ends of the
range. The rest of the probabilities are then derived based on the
model from the adjusted prob of zero.

Change-Id: Iae050f3cbcc6d8b3f204e8dc395ae47b3b2192c9
2013-03-25 23:43:38 -07:00
Dmitry Kovalev 26cec5c13f Basic encryption feature for libvpx.
New decoder control paramter VP8_SET_DECRYPT_KEY to set the decryption key.

Change-Id: I6fc1f44d41f74f3b3f702778af1a6f8f5cc9439f
2013-03-15 18:21:55 -07:00
Yaowu Xu 88862c0454 put refmvselection under experiment
and turn the experiment off by default.

Change-Id: If9e684aa6cc49eacd39f36645a110a447e38d2de
2013-03-13 10:40:31 -07:00
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
John Koleszar 69c67c9531 Merge master branch into experimental
Picks up some build system changes, compiler warning fixes, etc.

Change-Id: I2712f99e653502818a101a72696ad54018152d4e
2013-03-01 11:06:05 -08:00
Ronald S. Bultje b1641150b1 Merge cnvcontext experiment.
Change-Id: I35e64998b25694a3bb4a62164bba3c03c1db4bc7
2013-02-26 10:40:15 -08:00
Jingning Han 77a3becf92 clean up forward and inverse hybrid transform
Rebased.

Remove the old matrix multiplication transform computation. The 16x16
ADST/DCT can be switched on/off and evaluated by setting ACTIVE_HT16
300/0 in vp9/common/vp9_blockd.h.

Change-Id: Icab2dbd18538987e1dc4e88c45abfc4cfc6e133f
2013-02-25 09:16:12 -08:00
Yaowu Xu d262e26cc7 Merge lossless experiment
Change-Id: I7b7b8d4fda3a23699e0c920d727f8c15d37d43aa
2013-02-20 07:54:28 -08:00
Jingning Han cd907b1601 16x16 butterfly inverse ADST/DCT hybrid transform
rebased.

This patch includes 16x16 butterfly inverse ADST/DCT hybrid
transform. It uses the variant ADST of kernel
    sin((2k+1)*(2n+1)/4N),
which allows a butterfly implementation.

The coding gains as compared to DCT 16x16 are about 0.1% for
both derf and std-hd. It is noteworthy that for std-hd sets
many sequences gains about 0.5%, some 0.2%. There are also few
points that provides -1% to -3% performance. Hence the average
goes to about 0.1%.

Change-Id: Ie80ac84cf403390f6e5d282caa58723739e5ec17
2013-02-19 09:07:00 -08:00
Paul Wilkins 6a9f0c61a4 Remove NEWCOEFCONTEXT experiment.
Removal of the  NEWCOEFCONTEXT experiment to
reduce code clutter and make it easier to experiment with
some other changes to the coefficient coding context.

Change-Id: Icd17b421384c354df6117cc714747647c5eb7e98
2013-02-13 15:12:17 +00:00
Paul Wilkins 649be94cf0 Removal of Hybrid DWT/DCT experiment.
Removal of experiment to simplify code base for other
changes.

Change-Id: If0a33952504558511926ad212bc311fc2bffb19a
2013-02-13 15:08:48 +00:00
Jingning Han 57e995ff9c butterfly inverse 4x4 ADST
fixed format issues.

Implement the inverse 4x4 ADST using 9 multiplications. For this
particular dimension, the original ADST transform can be
factorized into simpler operations, hence is retained.

Change-Id: Ie5d9749942468df299ab74e90d92cd899569e960
2013-02-11 10:42:39 -08:00
Jingning Han d15e1da494 Butterfly ADST based hybrid transform
Refactor the 8x8 inverse hybrid transform. It is now consistent
with the new inverse DCT. Overall performance loss (due to the
use of this variant ADST, and the rounding errors in the butterfly
implementation) for std-hd is -0.02.

Fixed BUILD warning.

Devise a variant of the original ADST, which allows butterfly
computation structure. This new transform has kernel of the
form: sin((2k+1)*(2n+1) / (4N)). One of its butterfly structures
using floating-point multiplications was reported in Z. Wang,
"Fast algorithms for the discrete W transform and for the discrete
Fourier transform", IEEE Trans. on ASSP, 1984.

This patch includes the butterfly implementation of the inverse
ADST/DCT hybrid transform of dimension 8x8.

Change-Id: I3533cb715f749343a80b9087ce34b3e776d1581d
2013-02-07 10:07:46 -08:00
Ronald S. Bultje aac73df1a7 Use configure checks for various inline keywords.
Change-Id: I8508f1a3d3430f998bb9295f849e88e626a52a24
2013-02-06 16:12:56 -08:00
Johann b46d58ad6a Link pthread when it is available
Linking when we don't use it but it is available is probably harmless.

Gtest requires pthreads. Don't automatically enable unit tests if we
don't have it.

Change-Id: I5e6c3b609f840c7b6dbb36fc65809f0ef84685f8
2013-01-18 12:32:15 -08:00
John Koleszar de5546c372 Merge branch 'experimental' of review:webm/libvpx
Change-Id: Ib2c2236349c2ae8ee81bd01c5067dddcbac713ca
2013-01-14 18:34:04 -08:00
Ronald S. Bultje c9071601a2 Remove compound intra-intra experiment.
This experiment gives little gains and adds relatively much code
complexity (and it hinders other experiments), so let's get rid of
it.

Change-Id: Id25e79a137a1b8a01138aa27a1fa0ba4a2df274a
2013-01-14 15:47:25 -08:00
Yaowu Xu 741fbe9656 Merge experiment "subpelrefmv"
Change-Id: Iac7f3d108863552b850c92c727e00c95571c9e96
2013-01-14 15:18:47 -08:00
Yaowu Xu f7dab60096 Merge experiment "widerlpf"
Change-Id: I0c94475075e66e13cfe4c20fab7db6474441ae86
2013-01-14 15:17:35 -08:00
Yaowu Xu 8750414368 Merge "change to evaluate reference mvs using above only" into experimental 2013-01-14 14:40:38 -08:00
Yaowu Xu fdf8654189 change to evaluate reference mvs using above only
Change-Id: Ibcc342efac0a9be7a21d9b2c09984d9e16bbb225
2013-01-14 14:01:40 -08:00
Adrian Grange 7bcaac3e64 Merge prediction filter
Removed the experimental flag from around the prediction filter.

Change-Id: Ic1dd2db8fe8ac17ed5129f83094d4c5cdd5527d2
2013-01-14 12:57:07 -08:00
Andoni Morales Alastruey 652589d56c configure: add support for android x86
Change-Id: Iadbfce5ecddd53a5238c2036e2c07f05d5853a5a
2013-01-14 12:51:16 +01:00
Ronald S. Bultje aa2effa954 Merge tx32x32 experiment.
Change-Id: I615651e4c7b09e576a341ad425cf80c393637833
2013-01-10 08:23:59 -08:00
Ronald S. Bultje 460501fe84 Merge "Merge superblocks64 experiment." into experimental 2013-01-10 08:18:33 -08:00
Ronald S. Bultje 6884a83f06 Merge superblocks64 experiment.
Change-Id: If6c88752dffdb566f8d4322f135145270716fb8e
2013-01-09 17:21:40 -08:00
Yaowu Xu 51bae955e6 experiment a wider loop filter for MB border
when larger transforms are used

Change-Id: I25251442b44bf251df4c25a1c1fcf71fb2ad913b
2013-01-09 16:39:05 -08:00
Adrian Grange 7d6b5425d7 New prediction filter
This patch removes the old pred-filter experiment and replaces it
with one that is implemented using the switchable filter framework.

If the pred-filter experiment is enabled, three interopolation
filters are tested during mode selection; the standard 8-tap
interpolation filter, a sharp 8-tap filter and a (new) 8-tap
smoothing filter.

The 6-tap filter code has been preserved for now and if the
enable-6tap experiment is enabled (in addition to the pred-filter
experiment) the original 6-tap filter replaces the new 8-tap smooth
filter in the switchable mode.

The new experiment applies the prediction filter in cases of a
fractional-pel motion vector. Future patches will apply the filter
where the mv is pel-aligned and also to intra predicted blocks.

Change-Id: I08e8cba978f2bbf3019f8413f376b8e2cd85eba4
2013-01-09 12:00:39 -08:00
Deb Mukherjee 4b7304ee68 Adds 64x64 hybrid dct/dwt transform
This is to add to the 64x64 transform experiment as an alternative to
a 64x64 DCT.
Two levels of wavelet decomposition is used on a 64x64 block, followed
by 16x16 DCT on the four lowest subbands. The highest three subbands
are left untransformed after the first level DWT.

Change-Id: I3d48d5800468d655191933894df6b46e15adca56
2013-01-08 14:05:58 -08:00
John Koleszar 879cb7d962 Merge vp9-preview changes into experimental branch
Incorportate vp9-preview changes by merging master branch into experimental.

Conflicts:
	test/test.mk
	vp9/common/vp9_filter.c
	vp9/common/vp9_idctllm.c
	vp9/common/vp9_invtrans.h
	vp9/common/vp9_mbpitch.c
	vp9/common/vp9_rtcd_defs.sh
	vp9/common/vp9_systemdependent.h
	vp9/common/vp9_type_aliases.h
	vp9/common/x86/vp9_asm_stubs.c
	vp9/common/x86/vp9_subpixel_mmx.asm
	vp9/decoder/vp9_decodframe.c
	vp9/decoder/vp9_dequantize.c
	vp9/decoder/vp9_dequantize.h
	vp9/decoder/vp9_onyxd_int.h
	vp9/encoder/vp9_bitstream.c
	vp9/encoder/vp9_encodeframe.c
	vp9/encoder/vp9_rdopt.c

Change-Id: I17f51c3666d1b59cf1a699f87607cbc5d30a87c5
2013-01-08 10:19:59 -08:00
Ronald S. Bultje c3941665e9 64x64 blocksize support.
3.2% gains on std/hd, 1.0% gains on hd.

Change-Id: I481d5df23d8a4fc650a5bcba956554490b2bd200
2013-01-05 18:20:25 -08:00
John Koleszar 16810c10c1 Merge branch 'vp9-preview' of review:webm/libvpx
Merge the vp9-preview branch into master.

Change-Id: If700b9054676f24bed9deb59050af546c1ca5296
2012-12-27 09:37:19 -08:00
Deb Mukherjee 08f0c7cc9c New previous coef context experiment
Adds an experiment to derive the previous context of a coefficient
not just from the previous coefficient in the scan order but from a
combination of several neighboring coefficients previously encountered
in scan order.  A precomputed table of neighbors for each location
for each scan type and block size is used. Currently 5 neighbors are
used.

Results are about 0.2% positive using a strategy where the max coef
magnitude from the 5 neigbors is used to derive the context.

Change-Id: Ie708b54d8e1898af742846ce2d1e2b0d89fd4ad5
2012-12-19 18:49:39 -08:00
Johann a1d929ea97 Unit tests do not build for iOS
Change-Id: I63423f8f2ec152cb490ddd9e6a94e431a11858f6
2012-12-13 11:40:15 -08:00
John Koleszar d984763867 configure: add --enable-external-build support
First attempt at avoiding all the compile-time environment detection for
cases where you can generate the environments statically, as when the
real build is being performed by another build system.

Change-Id: Ie3cf95d71d6c5169900f31e263b84bc123cdf73f
2012-12-10 12:39:55 -08:00
Yaowu Xu ab480cede5 experiment with CONTEXT conversion
This commit changed the ENTROPY_CONTEXT conversion between MBs that
have different transform sizes.

In additioin, this commit also did a number of cleanup/bug fix:
1. removed duplicate function vp9_fix_contexts() and changed to use
vp8_reset_mb_token_contexts() for both encoder and decoder
2. fixed a bug in stuff_mb_16x16 where wrong context was used for
the UV.
3. changed reset all context to 0 if a MB is skipped to simplify the
logic.

Change-Id: I7bc57a5fb6dbf1f85eac1543daaeb3a61633275c
2012-12-07 17:25:45 -08:00
Ronald S. Bultje c456b35fdf 32x32 transform for superblocks.
This adds Debargha's DCT/DWT hybrid and a regular 32x32 DCT, and adds
code all over the place to wrap that in the bitstream/encoder/decoder/RD.

Some implementation notes (these probably need careful review):
- token range is extended by 1 bit, since the value range out of this
  transform is [-16384,16383].
- the coefficients coming out of the FDCT are manually scaled back by
  1 bit, or else they won't fit in int16_t (they are 17 bits). Because
  of this, the RD error scoring does not right-shift the MSE score by
  two (unlike for 4x4/8x8/16x16).
- to compensate for this loss in precision, the quantizer is halved
  also. This is currently a little hacky.
- FDCT and IDCT is double-only right now. Needs a fixed-point impl.
- There are no default probabilities for the 32x32 transform yet; I'm
  simply using the 16x16 luma ones. A future commit will add newly
  generated probabilities for all transforms.
- No ADST version. I don't think we'll add one for this level; if an
  ADST is desired, transform-size selection can scale back to 16x16
  or lower, and use an ADST at that level.

Additional notes specific to Debargha's DWT/DCT hybrid:
- coefficient scale is different for the top/left 16x16 (DCT-over-DWT)
  block than for the rest (DWT pixel differences) of the block. Therefore,
  RD error scoring isn't easily scalable between coefficient and pixel
  domain. Thus, unfortunately, we need to compute the RD distortion in
  the pixel domain until we figure out how to scale these appropriately.

Change-Id: I00386f20f35d7fabb19aba94c8162f8aee64ef2b
2012-12-07 14:45:05 -08:00
Deb Mukherjee 0c917fc975 Compound inter-intra experiment
A patch on compound inter-intra prediction.

In compound inter-intra prediction, a new predictor for
16x16 inter coded MBs are obtained by combining a single
inter predictor with a 16x16 intra predictor, in a manner
that the weight varies with distance from the top/left
boundary. The current search strategy is to combine the best
inter mode with the best intra mode obtained independently.

Results so far:

derf +0.31%
yt +0.32%
std-hd +0.35%
hd +0.42%

It is conceivable that the results would improve somewhat
with a more thorough search strategy where all intra modes
are searched given the best mv, or even a joint search for
the best mv and the best intra mode.

Change-Id: I7951f1ed0d6eb31ca32ac24d120f1585bcd8d79b
2012-11-16 06:56:29 -08:00
Deb Mukherjee d01357bbad New b-intra mode where direction is contextual
Preliminary patch on a new 4x4 intra mode B_CONTEXT_PRED where the
dominant direction from the context is used to encode. Various decoder
changes are needed to support decoding of B_CONTEXT_PRED in conjunction
with hybrid transforms since the scan order and tokenization depends on
the actual direction of prediction obtained from the context. Currently
the traditional directional modes are used in conjunction with the
B_CONTEXT_PRED, which also seems to provide the best results.

The gains are small - in the 0.1% range.

Change-Id: I5a7ea80b5218f42a9c0dfb42d3f79a68c7f0cdc2
2012-11-10 07:12:30 -08:00
John Koleszar 2c08c28191 Merge with upstream experimental changes
Include upstream changes (unit test fixes, in particular) into the
merged code base.

Change-Id: I096f8a9d09e2532fbec0c95d7a995ab22fa54b29
2012-11-07 11:46:23 -08:00
John Koleszar 7b8dfcb5a2 Rough merge of master into experimental
Creates a merge between the master and experimental branches. Fixes a
number of conflicts in the build system to allow *either* VP8 or VP9
to be built. Specifically either:

  $ configure --disable-vp9 $ configure --disable-vp8
  --disable-unit-tests

VP9 still exports its symbols and files as VP8, so that will be
resolved in the next commit.

Unit tests are broken in VP9, but this isn't a new issue. They are
fixed upstream on origin/experimental as of this writing, but rebasing
this merge proved difficult, so will tackle that in a second merge
commit.

Change-Id: I2b7d852c18efd58d1ebc621b8041fe0260442c21
2012-11-07 11:30:16 -08:00
Yaowu Xu 0cedaa3631 merge full pixel refmv experiment
Change-Id: Ib39ad47a7d188f3b45416937b7eeb28c3e79b74c
2012-11-07 10:52:45 -08:00
Johann 8ca1ed2348 Add option to disable documentation
Documentation is typically auto-detected by checking for php and
doxygen. Add an option to explicitly disable it.

Remove toggle keywords from libraries, examples, documentation and
unit tests. They were not consistent with the default status.

Change-Id: I21049675ccfd8e58ac612cd058641b197db5c0eb
2012-11-06 07:24:04 -08:00
Ronald S. Bultje 4b2c2b9aa4 Rename vp8/ codec directory to vp9/.
Change-Id: Ic084c475844b24092a433ab88138cf58af3abbe4
2012-11-01 16:31:22 -07:00
Paul Wilkins 80674b4330 Merge "Separated experiment for subpel refmv selection" into experimental 2012-10-30 11:00:30 -07:00
Paul Wilkins e05e6e107e Remove old experiment.
Delete code relating to featureupdates experiment.

Change-Id: If218762c658bb8cbb3007cf2069123b3e05adcbc
2012-10-30 17:36:09 +00:00
Yaowu Xu 24265e884e Separated experiment for subpel refmv selection
As suggested by Paul, this commit separate the subpel refmv selection
into a separate experiment. It also changed a couple variable names
to better reflect the nature of the variables.

Change-Id: Id951c3cadc61a982dd15afe641000f60213b8995
2012-10-30 10:06:59 -07:00
Yaowu Xu db54baf9aa Remove "switchable_interp" from experiment list
Now this experiment has been merged.

Change-Id: I6c93784df89434c52a4eb8f977cd3745e269abf9
2012-10-30 08:53:47 -07:00
Ronald S. Bultje 8166657109 Make implicit_segmentation-related code an experiment.
This way, the code is not compiled in by default, thus decreasing
overall binary size.

Change-Id: I85cac8f5a22a51a7d99c820ef6d6ed179d4106a0
2012-10-29 21:15:42 -07:00
Deb Mukherjee 04d62a989b Merging in the TX_SELECT experiment
Change-Id: I0d306b0062be59bc785b65882691c956c8b5e7c8
2012-10-22 16:58:57 -07:00
Deb Mukherjee 78808ad9fb Merge of the newmventropy experiment
Removes the old mv encoding code.

Change-Id: I1026d48cc5ac15ccb776f98463e929254c3dc7da
2012-10-22 15:23:41 -07:00
Deb Mukherjee f10465634b Merging the hybrid transform experiments
Change-Id: I99f1982b30a630a9a070a8326d83b34a33cba14c
2012-10-22 11:55:29 -07:00
Deb Mukherjee a7333b0a5b Merge of the TX_16X16 experiment
Change-Id: I22aa803ffff330622cdb77277e7b196a9766f882
2012-10-10 17:05:54 -07:00
Johann ec658125b0 Add option to disable documentation
Documentation is typically auto-detected by checking for php and
doxygen. Add an option to explicitly disable it.

Remove toggle keywords from libraries, examples, documentation and
unit tests. They were not consistent with the default status.

Change-Id: I21049675ccfd8e58ac612cd058641b197db5c0eb
2012-10-10 09:19:26 -07:00
Ronald S. Bultje 9ca3c8b2c4 Selectable transform size try 2.
Results: derf (vanilla or +hybridtx) +0.2% and (+hybrid16x16
or +tx16x16) +0.7%-0.8%; HD (vanilla or +hybridtx) +0.1-0.2%
and (+hybrid16x16 or +tx16x16) +1.4%, STD/HD (vanilla or +hybridtx)
about even, and (+hybrid16x16 or +tx16x16) +0.8-1.0%.

Change-Id: I03899e2f7a64e725a863f32e55366035ba77aa62
2012-10-09 09:18:21 -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
Jingning Han de6dfa6bb0 hybrid transform of 16x16 dimension
Enable ADST/DCT of dimension 16x16 for I16X16 modes. This change provides
benefits mostly for hd sequences.

Set up the framework for selectable transform dimension.

Also allowing quantization parameter threshold to control the use
of hybrid transform (This is currently disabled by setting threshold
always above the quantization parameter. Adaptive thresholding can
be built upon this, which will further improve the coding performance.)

The coding performance gains (with respect to the codec that has all
other configuration settings turned on) are

derf:   0.013
yt:     0.086
hd:     0.198
std-hd: 0.501

Change-Id: Ibb4263a61fc74e0b3c345f54d73e8c73552bf926
2012-08-30 16:52:25 -07:00
Paul Wilkins 2d60bee1fb New Motion Reference Search
Alternative strategy for finding a list of candidate motion
vectors to use as reference values in mv coding and as
nearest and near.

Sort by sad in vp8_find_best_ref_mvs() rather than just
pick the best. Allow 0,0 as a best ref option but not a
nearest or near unless there are no alternatives.

Encode/Decode verified on at least some clips.

Some commented out experimental and stats code still in place.

Gain over existing code averages about 1% on derf (alll metrics)
with improvement on all clips. Other test results pending.

The entropy coding of the mode (nearest/near etc) still
depends upon and requires the old "findnear" code so
this needs looking at and may provide room for further gains.

Change-Id: I871d7cba1d1c379c4bad9bcccce1fb19c46b8247
2012-08-24 18:08:21 +01:00
John Koleszar 5055a1610d remove rotation experiment
This is being reimplemented more generically in terms of affine
transforms.

Change-Id: I9300bfde5f8b93c708c64f59427087720f8ed782
2012-08-21 10:09:56 -07:00
Christian Duvivier a1168155a7 Fix warnings.
Change-Id: I4b911e4173da30c164bde7ea50bc80a70fbbb745
2012-08-14 16:23:32 -07:00
Mike Frysinger b4ab43f12c do not error out on generic-gnu + --enable-shared
If you build with --enabled-shared on a Linux arch not explicitly
listed, the configure script will abort because it didn't detect
"linux" in the fallback generic-gnu tuple.

Since this is the fallback tuple and people are passing
--enable-shared, assume the user knows what they're in for.

Change-Id: Ia35b657e7247c8855e3a94fca424c9884d4241e3
2012-08-14 11:39:20 -07:00
Daniel Kang 2f963917a6 Fix typo, which adds skip testing for 16x16
Also add warnings for undefined macros in the C pre-processor

Change-Id: I1ec30e57c5a49fb72151a4cf140d7eeb0fb1d779
2012-08-13 16:28:11 -07:00
Deb Mukherjee 7d0656537b Merging in the sixteenth subpel uv experiment
Merges this experiment in to make it easier to run tests on
filter precision, vectorized implementation etc.

Also removes an experimental filter.

Change-Id: I1e8706bb6d4fc469815123939e9c6e0b5ae945cd
2012-08-08 16:57:43 -07:00
Yaowu Xu 8b2f57d0b8 a new way of determining reference motion vector
Using surrounding reconstructed pixels from left and above to select
best matching mv to use as reference motion vector for mv encoding.

Test results:
       AVGPSNR  GLBPSNR VPXSSIM
Derf:  1.107%   1.062%  0.992%
Std-hd:1.209%   1.176%  1.029%

Change-Id: I8f10e09ee6538c05df2fb9f069abcaf1edb3fca6
2012-08-07 11:25:57 -07:00
Christian Duvivier 82edabce75 Add x86_64-darwin11-gcc target.
This allows building on MountainLion as the 10.6 SDK has been
removed from the latest Xcode version (4.4 4F250). Also fix
all warnings for that build.

Change-Id: Ib70bca4a25295f13595f0d10ea9f0229631de5a4
2012-08-06 15:26:58 -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
Jingning Han fcbff9ee04 Replacing the 8x8 DCT with 8x8 ADST/DCT for I8x8
Fixed the code review comments.

Under the htrans8x8 experiment the 8X8 DCT in the
I8X8 mode is replaced with a combination of 8X8 ADST and
DCT.

Overall coding gains with the htrans8x8 experiment are:
derf:   0.486
std-hd: 1.040
hd:     1.063
yt:     0.506

Note that part of the gain comes from bigger transforms
(8x8 instead of 4x4) and part comes from replacing the DCT
wth the ADST.

Change-Id: I92ca6bbfce11b4165d612b81d9adfad4d010c775
2012-08-03 12:02:07 -07:00
Daniel Kang e6de9c2e5d Merge "16x16 DCT blocks." into experimental 2012-08-03 10:22:04 -07:00
Deb Mukherjee 4aabfaa5d0 Merge "Merging and bug-fix in enhanced_interp experiment" into experimental 2012-08-03 10:18:25 -07:00
Daniel Kang fed8a1837f 16x16 DCT blocks.
Set on all 16x16 intra/inter modes

Features:
- Butterfly fDCT/iDCT
- Loop filter does not filter internal edges with 16x16
- Optimize coefficient function
- Update coefficient probability function
- RD
- Entropy stats
- 16x16 is a config option

Have not tested with experiments.

hd:     2.60%
std-hd: 2.43%
yt:     1.32%
derf:   0.60%

Change-Id: I96fb090517c30c5da84bad4fae602c3ec0c58b1c
2012-08-02 17:33:10 -07:00
Jingning Han c7846ebc34 Use 8x8 DCT transform for I8X8 prediction mode
Apply 2D-DCT transform of dimension 8x8 to encode prediction
residuals of I8X8 mode.
Brought back block type 3 probability context model for 8x8 tokens,
which is used for the coefficients of Y blocks in I8x8 modes. The
coefficient costs estimate of I8X8 mode in rate-distortion is also
changed appropriately.
Performance results:
derf:   0.246
yt:     0.114
std-hd: 0.730
hd:     0.670

Change-Id: If1d970eeb4e1827c9f0d2c5b27d33089b347ea27
2012-08-02 09:09:17 -07:00
Deb Mukherjee 0ebf548c75 Merging and bug-fix in enhanced_interp experiment
Merged the enhanced_interp experiment.
Found and fixed a bug in the include files framework, whereby
certain encoder files were still using the old INTERP_EXTEND
value of 3 instead of 4. The thresholds for mv range mcomp.c
need a small adjustment to prevent crashes.

The results are more or less unchanged.

Change-Id: Iac5008390f1efc97ce1102fbb5f8989c847fb579
2012-07-31 11:45:31 -07:00
Deb Mukherjee 5259744145 Adds support for switchable interpolation filters.
Allows for swtiching/setting interpolation filters at the MB
level. A frame level flag indicates whether to use a specifc
filter for the entire frame or to signal the interpolation
filter for each MB. When switchable filters are used, the
encoder chooses between 8-tap and 8-tap sharp filters. The
code currently has options to explore other variations as well,
which will be cleaned up subsequently.

One issue with the framework is that encoding is slow. I
tried to do some tricks to speed things up but it is still slow.
Decoding speed should not be affected since the number of
filter taps remain unchanged.

With the current version, we are up 0.5% on derf on average but
some videos city/mobile improve by close to 4 and 2% respectively.
If we did a full-search by turning the SEARCH_BEST_FILTER flag
on, the results are somewhat better.

The framework can be combined with filtered prediction, and I
seek feedback regarding that.

Rebased.

Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
2012-07-30 11:33:43 -07:00
Deb Mukherjee 96f9473866 Merge "Merges several experiments" into experimental 2012-07-27 12:22:55 -07:00
Deb Mukherjee 9984a155d6 Merges several experiments
The following five experiments are merged:

newentropy
newupdate
adaptive_entropy (also includes a couple of parameter changes
                  that improves results a little
                  in common/entropymode.c and encoder/modecosts.c
                  that were not merged from the internal branch)
newintramodes
expanded_coef_context

Change-Id: I8a142a831786ee9dc936f22be1d42a8bced7d270
2012-07-27 12:12:39 -07:00
jimbankoski 45e551b28f shared object on mac osx
Change-Id: Ibf357eb492e7d5883fbdf1ddf455e28767c1d65d
2012-07-25 19:39:33 -07:00
Jim Bankoski 1b16e74813 Dll build of libvpx
Change-Id: I74e50b4dfbe73eb98e1dce1695a9973f637220c0
2012-07-23 14:51:21 -07:00
Jingning Han 9824230fe3 Adds hybrid transform
Adds ADST/DCT hybrid transform coding for Intra4x4 mode.
The ADST is applied to directions in which the boundary
pixels are used for prediction, while DCT applied to
directions without corresponding boundary prediction.

Adds enum TX_TYPE in b_mode_infor to indicate the transform
type used.

Make coding style consistent with google style.
Fixed the commented issues.

Experimental results in terms of bit-rate reduction:
derf:   0.731%
yt:     0.982%
std-hd: 0.459%
hd:     0.725%

Will be looking at 8x8 transforms next.

Change-Id: I46dbd7b80dbb3e8856e9c34fbc58cb3764a12fcf
2012-07-19 13:02:57 -07:00
Yaowu Xu d632bf8cf5 removed floating point version 8x8 fdct
the integer version has very good precision, the float version is no
longer useful. this commit also removes the experiment option from
configure script.

Change-Id: Ibb92e63c9f5083357cdf89c559d584a7deb3353f
2012-07-17 22:50:47 -07:00
Yaowu Xu 11e23e673d cleanup experiments in configure
this commit removes a number of experiment options from configure
script. the associated experiments are already fully merged, the
options in configure script have no effect at all.

Change-Id: I8054ccaee0a04610162ed76ac9e59c4538217113
2012-07-17 22:34:07 -07:00
Dragan Mrdjan 07ff7fa811 VP8 optimizations for MIPS dspr2
Signed-off-by: Raghu Gandham <raghu@mips.com>

Change-Id: I3a8bca425cd3dab746a6328c8fc8843c8e87aea6
2012-07-10 10:01:54 -07:00
Hui Su e44ee38aef Add lossless compression mode.
This commit adds lossless compression capability to the experimental
branch. The lossless experiment can be enabled using --enable-lossless
in configure. When the experiment is enabled, the encoder will use
lossless compression mode by command line option --lossless, and the
decoder automatically recognizes a losslessly encoded clip and decodes
accordingly.

To achieve the lossless coding, this commit has changed the following:
    1. To encode at lossless mode, encoder forces the use of unit
quantizer, i.e, Q 0, where effective quantization is 1. Encoder also
disables the usage of 8x8 transform and allows only 4x4 transform;
    2. At Q 0, the first order 4x4  DCT/IDCT have been switched over
to a pair of forward and inverse Walsh-Hadamard Transform
(http://goo.gl/EIsfy),  with proper scaling applied to match the range
of the original 4x4 DCT/IDCT pair;
    3. At Q 0, the second order remains to use the previous
walsh-hadamard transform pair. However, to maintain the reversibility
in second order transform at Q 0, scaling down is applied to first
order DC coefficients prior to forward transform, and scaling up is
applied to the second order output prior to quantization. Symmetric
upscaling and downscaling are added around inverse second order
transform;
    4. At lossless mode, encoder also disables a number of minor
features to ensure no loss is introduced, these features includes:
        a. Trellis quantization optimization
        b. Loop filtering
        c. Aggressive zero-binning, rounding and zero-bin boosting
        d. Mode based zero-bin boosting

Lossless coding test was performed on all clips within the derf set,
to verify that the commit has achieved lossless compression for all
clips. The average compression ratio is around 2.57 to 1.
(http://goo.gl/dEShs)

Change-Id: Ia3aba7dd09df40dd590f93b9aba134defbc64e34
2012-06-28 17:09:47 -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
Johann d6e80deb32 Clean Android build defaults
Disable unit-tests. The logging in GTest would need to be adjusted.

Restructure ARM cpu detection. Flatten if-else logic.

Change #if defined(HAVE_*) to #if HAVE_* because we only need to check
for features that the library was actually built with. This should have
been harmless, as disabled feature sets wouldn't have any features to
call.

Change-Id: Iea21aa42ce5f049c53ca0376d25bcd0f36f38284
2012-06-20 09:15:28 -07:00
Ronald S. Bultje 8a1c01d3e6 Reset executable flags for configure.
This was accidently disabled in 1fe85a35e0.

Change-Id: I09dbfecfe45b28dec75b27a627e3065f9c7dc8b2
2012-06-18 14:21:30 -07:00
Deb Mukherjee 1fe85a35e0 Adaptive entropy coding of coefficients, modes, mv.
This patch incorporates adaptive entropy coding of coefficient tokens,
and mode/mv information based on distributions encountered in a frame.
Specifically, there is an initial forward update to the probabilities
in the bitstream as before for coding the symbols in the frame, however
at the end of decoding each frame, the forward update to the
probabilities is reverted and instead the probabilities are updated
towards the actual distributions encountered within the frame.
The amount of update is weighted by the number of hits within each
context.

Results on derf/hd/std-hd are all up by 1.6%.

On derf, the most of the gains come from coefficients, however for the
hd and std-hd sets, the most of the gains come from the mode/mv
information updates.

Change-Id: I708c0e11fdacafee04940fe7ae159ba6844005fd
2012-06-15 10:35:23 -07:00
John Koleszar 2bf62c1dbb Enable unit tests by default
Build unit tests by default if there is a working C++ toolchain
available.

Change-Id: I511558339b332fadfde37ef01b2dbf2755f48f89
2012-05-22 15:00:06 -07:00
Deb Mukherjee c5ddb7f016 Adds new Directional Intra prediction modes.
Adds 6 directional intra predictiom modes for 16x16 and 8x8 blocks.

Change-Id: I25eccc0836f28d8d74922e4e9231568a648b47d1
2012-05-15 08:54:50 -07:00
Yaowu Xu b22cc559b6 Changed to use integer 8x8 dct
The commit added an integer version of 8x8 forward DCT, based on the
orginal forward DCT from VP6. The constants, roundings, and shifts
were adjusted to improve the accuracy. The latest patch has a very
similar accuracy in term of round trip error against the floating
point version.

It should be noted here that the purpose of the patch is to help
encoding speed and facilitate all other experiments. There will be
futher review in combination with inverse DCT before finalization.

configure with "--enable--int_8x8fdct" to use the integer version

Change-Id: I5a4f80507429f0e07cf02a13768ec81cbfddc5bc
2012-05-15 07:28:26 -07:00
John Koleszar 44d35f7b25 Merge branch 'origin/eider' into master
Conflicts:
	vp8/common/entropymode.c
	vp8/common/entropymode.h
	vp8/encoder/encodeframe.c
	vp8/vp8_cx_iface.c

Change-Id: I708b0f30449b9502b382e47b745d56f5ed2ce265
2012-05-11 10:51:05 -07:00
Jim Bankoski a5d11f298f Fix configure issue with unit test add.
Change-Id: I960c6eb81f8d76c958e8af989700447f581a8812
2012-05-11 08:08:12 -07:00
James Berry a0769f70f5 add unit test support via google test
adds unit testing via google test

Change-Id: I144b50a976d79251fc5135186a4e0a5051ed0e8c
2012-05-11 06:19:52 -07:00
Deb Mukherjee 813c6c3925 Expanding the coefficient encoding contexts
This patch expands the set of prev contexts used for video coding
from 3 to 4.

There is a small improvement of the order of 0.08% for derf and
0.15% on the HD set. The tests were rerun after the various merges
last week. There are two columns in each test - the first are the
results with the mbskip change, and the second with expanded contexts
added on top of that.

Derf:
http://www.corp.google.com/~debargha/vp8_results/explibvpx_newentropy_expcontext.html

HD:
http://www.corp.google.com/~debargha/vp8_results/explibvpx_hd_newentropy_expcontext.html

Rebased.

Broke up 80 char lines.

Change-Id: I82d2e72d054e530cbf5ce9aa0e6d85c582965675
2012-05-04 07:11:38 -07:00
Attila Nagy 14c9fce8e4 Fix compiler warnings
Fix code for following warnings:
-Wimplicit-function-declaration
-Wuninitialized
-Wunused-but-set-variable
-Wunused-variable

Change-Id: I2be434f22fdecb903198e8b0711255b4c1a2947a
2012-05-02 10:57:57 +03:00
Johann 101c2bd1fa Add target for OS X 10.8 Mountain Lion
Also clarify universal build rules

Change-Id: I3b7352f81d5d5b3472420e89872038377c5c2697
2012-04-27 13:35:27 -07:00
Deb Mukherjee c6f1bf4321 Differential encoding of probability updates
Adds differential encoding of prob updates using a subexponential
code centered around the previous probability value.
Also searches for the most cost-effective update, and breaks
up the coefficient updates into smaller groups.

Small gain on Derf: 0.2%

Change-Id: Ie0071e3dc113e3d0d7ab95b6442bb07a89970030
2012-04-23 23:02:52 -07:00
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
Johann c459d37c26 Allow disabling disabled codecs
When using 'make dist' after --disable-vp8[encoder|decoder] it would
fail to recognize the option. This would only occur when also specifying
--enable-install-docs and --enable-install-srcs but not
--enable-codec-srcs

Including vpx/ fixes builds with --enable-codec-srcs

vpx_timer.h is also required for vpxenc.c

Change-Id: Ie3e28b2f7ec7ee6d5961d3843f9eab869f79c35b
2012-04-02 15:57:28 -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
Stefan Holmer 9c41143d66 Adds a motion compensated temporal denoiser to the encoder.
Some refactoring in rdopt.c and pickinter.c.

Change-Id: I4f50020eb3313c37f4d441d708fedcaf219d3038
2012-03-13 15:33:50 -07:00
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
Attila Nagy 52cf4dcaea Packing bitstream on-the-fly with delayed context updates
Produce the token partitions on-the-fly, while processing each MB.
Context is updated at the beginning of each frame based on the
previoud frame's counters. Optimally encoder outputs partitions in
separate buffers. For frame based output, partitions are concatenated
internally.

Limitations:
    - enabled just in combination with realtime-only mode
    - number of encoding threads has to be equal or less than the
    number of token partitions. For this reason, by default the encoder
    will do 8 token partitions.
    - vpxenc supports partition output (-P) just in combination with
    IVF output format (--ivf)

Performance:
    - Realtime encoder can be up to 13% faster (ARM) depending on the number
    of threads and bitrate settings. Constant gain over the 5-16 speed
    range.
    - Token buffer reduced from one frame to 8 MBs

Quality:
    - quality is affected by the delayed context updates. This again
    dependents on input material, speed and bitrate settings. For VC
    style input the loss seen is up to 0.2dB. If error-resilient=2
    mode is used than the effect of this change is negligible.

Example:
./configure --enable-realtime-only --enable-onthefly-bitpacking
./vpxenc --rt --end-usage=1 --fps=30000/1000 -w 640 -h 480
--target-bitrate=1000 --token-parts=3 --static-thresh=2000
--ivf -P -t 4 -o strm.ivf tanya_640x480.yuv

Change-Id: I127295cb85b835fc287e1c0201a67e378d025d76
2012-02-29 12:13:37 -05:00
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
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
Deb Mukherjee 18e90d744e Supporting high precision 1/8-pel motion vectors
This is the initial patch for supporting 1/8th pel
motion. Currently if we configure with enable-high-precision-mv,
all motion vectors would default to 1/8 pel. Encode and
decode syncs fine with the current code. In the next phase
the code will be refactored so that we can choose the 1/8
pel mode adaptively at a frame/segment/mb level.

Derf results:
http://www.corp.google.com/~debargha/vp8_results/enhinterp_hpmv.html
(about 0.83% better than 8-tap interpoaltion)

Patch 3: Rebased. Also adding 1/16th pel interpolation for U and V

Patch 4: HD results.
http://www.corp.google.com/~debargha/vp8_results/enhinterp_hd_hpmv.html
Seems impressive (unless I am doing something wrong).

Patch 5: Added mmx/sse for bilateral filtering, as well as enforced
use of c-versions of subpel filters with 8-taps and 1/16th pel;
Also redesigned the 8-tap filters to reduce the cut-off in order to
introduce a denoising effect. There is a new configure option
sixteenth-subpel-uv which will use 1/16 th pel interpolation for
uv, if the motion vectors have 1/8 pel accuracy.

With the fixes the results are promising on the derf set. The enhanced
interpolation option with 8-taps alone gives 3% improvement over thei
derf set:
http://www.corp.google.com/~debargha/vp8_results/enhinterpn.html

Results on high precision mv and on the hd set are to follow.

Patch 6: Adding a missing condition for CONFIG_SIXTEENTH_SUBPEL_UV in
vp8/common/x86/x86_systemdependent.c

Patch 7: Cleaning up various debug messages.

Patch 8: Merge conflict

Change-Id: I5b1d844457aefd7414a9e4e0e06c6ed38fd8cc04
2012-02-23 09:25:21 -08:00
Paul Wilkins 46f9ad2ca5 Experimental code base simplification.
Remove error concealment code.

Change-Id: I882705174fbfea212e96f7f684e47a671dbe5c67
2012-02-15 16:08:47 +00:00
Yaowu Xu d327dcf3aa moved segment based LPF level selection under CONFIG_FEATUREUPDATES
This commit moved segment based loop filter level selection into
the experiment of CONFIG_FEATUREUPDATES. As previous commit noted,
the segment based loop filter selection helps the compression by
~0.1% on cif set, the ongoing experiment CONFIG_FEATUREUPDATES
made encoding updates of the segment based LPF level more efficient,
hence, another .04% gain on cif set. The commit also fixed an issue
previously where encoder/decoder may use different loop filter level
for one of the segments.

Change-Id: Ia978b14aae95bb107d561ba53a7a2bb6ff01faf3
2012-02-15 07:18:05 -08:00
Paul Wilkins 9a8204d6ee Simplification of experimental code base.
Removed ~CONFIG_REALTIME_ONLY code.

Change-Id: I5fafff29a08acd8928699f9ddce8744787024d8c
2012-02-14 09:03:56 +00:00