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2013-05-22Merge CONFIG_COMP_INTER_JOINT_SEARCH.Paul Wilkins
Merge this experiment so that it is under a speed feature flag not a configuration flag. Change-Id: I536f7f125a4ff5149bb3a64f791e835c324535fd
2013-05-21Merge "Initial version of alpha channel support" into experimentalJohn Koleszar
2013-05-21Merging the model coef prob experimentDeb Mukherjee
Merges the experiment. Change-Id: I4eb19af6de6df6aa3a96a2e82f231d47ed9b3ae9
2013-05-16Initial version of alpha channel supportJohn Koleszar
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
2013-05-10Add joint motion search in comp_inter_inter mode(experiment)Yunqing Wang
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
2013-05-07Deprecate code_zerogroup experiment.Paul Wilkins
Delete code under the CONFIG_CODE_ZEROGROUP flag. Change-Id: I5fe6c7b42a5da9b73118e33594301da4129f320a
2013-05-07Deprecate comp_interintra_pred experiment.Paul Wilkins
Delete code under the CONFIG_COMP_INTERINTRA_PRED flag. Change-Id: I3d1079cf46305c08f7e11d738596ea112e7b547f
2013-05-07Remove enable_6tap filter experiment.Paul Wilkins
Clean out code under CONFIG_ENABLE_6TAP flag. Change-Id: Ic45b624081181027d6ba24d55dd644c3197f9830
2013-05-07Deprecate the newbintramode experiment.Paul Wilkins
Clean out code relating to newbintramode. Change-Id: Ie91f4f156cdf60ce0da8ca407c1c9cb00c7d0705
2013-05-07Add building blocks for partition down to 4x4Jingning Han
Macro ab4x4 contains experiments for recursive partition down to 4x4 block size. Change-Id: Ic727842fa98a4df9fd51e0025a545dc76a5c76c1
2013-05-07Merge SB8X8 into the codebaseJingning Han
Pull sb8x8 out of experimental list. verified via borg run tests. Fixed unit test failures. Change-Id: I12a4bbd17395930580c048ab68becad1ffe46e76
2013-05-06Y4M input support for 4:2:2, 4:4:4, 4:4:4:4John Koleszar
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
2013-05-03configure: special case flag test for clangJames Zern
(while still abusing the gcc targets) Change-Id: I40f33f619ed1ee760caf23f5598587b30cf8a9ed
2013-04-24Move sbsegment out of experimental listJingning Han
Move rectangular superblock coding out of experimental list. Change-Id: I96c37547d122330d666a67b4bf577ae54547857f
2013-04-23Add basic building blocks for 8x8 superblocks experiment.Ronald S. Bultje
Change-Id: I274a1d2e461e6ffdb106bac4ad6951692ace314e
2013-04-22Removing configure option for implicit wtd predDeb Mukherjee
Change-Id: Ibe0628905925fc81bbb192651276f417c2aa7552
2013-04-22Removes the code_nonzerocount experimentDeb Mukherjee
This patch does not seem to give any benefits. Change-Id: I9d2b4091d6af3dfc0875f24db86c01e2de57f8db
2013-04-22End of orientation zero group experimentDeb Mukherjee
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
2013-04-19Removal of CONFIG_NEW_MVREF experiment.Paul Wilkins
This experiment has failed to give much benefit but does add complexity so deprecated. Change-Id: Ic7b929ba706390b9907ef0b4f965bd401ca799a4
2013-04-17clean out experimentsYaowu Xu
that are related to using reconstructed pixel for selecting reference motion vectors. Change-Id: I048dfae39ca7385e344b57d46347ecc6e753e1bb
2013-04-15Initial addition of multiple ARF framesAdrian Grange
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
2013-04-09Make SB coding size-independent.Ronald S. Bultje
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
2013-04-04make one_shot_q an experimentYaowu Xu
so it is configurable to faciliate testings Change-Id: I247b62736c3a08ec2934793959d1ae605a05efa3
2013-03-27Merge branch 'master' into experimentalJohn Koleszar
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
2013-03-27Scatter-based scantables.Ronald S. Bultje
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
2013-03-26Implicit weighted prediction experimentDeb Mukherjee
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
2013-03-26Add an in-loop deringing experimentJohn Koleszar
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
2013-03-25Modeling default coef probs with distributionDeb Mukherjee
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
2013-03-15Basic encryption feature for libvpx.Dmitry Kovalev
New decoder control paramter VP8_SET_DECRYPT_KEY to set the decryption key. Change-Id: I6fc1f44d41f74f3b3f702778af1a6f8f5cc9439f
2013-03-13put refmvselection under experimentYaowu Xu
and turn the experiment off by default. Change-Id: If9e684aa6cc49eacd39f36645a110a447e38d2de
2013-03-07Coding con-zero count rather than EOB for coeffsDeb Mukherjee
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
2013-03-01Merge master branch into experimentalJohn Koleszar
Picks up some build system changes, compiler warning fixes, etc. Change-Id: I2712f99e653502818a101a72696ad54018152d4e
2013-02-26Merge cnvcontext experiment.Ronald S. Bultje
Change-Id: I35e64998b25694a3bb4a62164bba3c03c1db4bc7
2013-02-25clean up forward and inverse hybrid transformJingning Han
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
2013-02-20Merge lossless experimentYaowu Xu
Change-Id: I7b7b8d4fda3a23699e0c920d727f8c15d37d43aa
2013-02-1916x16 butterfly inverse ADST/DCT hybrid transformJingning Han
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
2013-02-13Remove NEWCOEFCONTEXT experiment.Paul Wilkins
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
2013-02-13Removal of Hybrid DWT/DCT experiment.Paul Wilkins
Removal of experiment to simplify code base for other changes. Change-Id: If0a33952504558511926ad212bc311fc2bffb19a
2013-02-11butterfly inverse 4x4 ADSTJingning Han
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
2013-02-07Butterfly ADST based hybrid transformJingning Han
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
2013-02-06Use configure checks for various inline keywords.Ronald S. Bultje
Change-Id: I8508f1a3d3430f998bb9295f849e88e626a52a24
2013-01-18Link pthread when it is availableJohann
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
2013-01-14Merge branch 'experimental' of review:webm/libvpxJohn Koleszar
Change-Id: Ib2c2236349c2ae8ee81bd01c5067dddcbac713ca
2013-01-14Remove compound intra-intra experiment.Ronald S. Bultje
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
2013-01-14Merge experiment "subpelrefmv"Yaowu Xu
Change-Id: Iac7f3d108863552b850c92c727e00c95571c9e96
2013-01-14Merge experiment "widerlpf"Yaowu Xu
Change-Id: I0c94475075e66e13cfe4c20fab7db6474441ae86
2013-01-14Merge "change to evaluate reference mvs using above only" into experimentalYaowu Xu
2013-01-14change to evaluate reference mvs using above onlyYaowu Xu
Change-Id: Ibcc342efac0a9be7a21d9b2c09984d9e16bbb225
2013-01-14Merge prediction filterAdrian Grange
Removed the experimental flag from around the prediction filter. Change-Id: Ic1dd2db8fe8ac17ed5129f83094d4c5cdd5527d2
2013-01-14configure: add support for android x86Andoni Morales Alastruey
Change-Id: Iadbfce5ecddd53a5238c2036e2c07f05d5853a5a
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