1. 08 Nov, 2017 1 commit
    • Zoe Liu's avatar
      Remove ONE_SIDED_COMPOUND experimental flag · c01dddb7
      Zoe Liu authored
      Always assume ONE_SIDED_COMPOUND is true as it has been adopted
      officially. Further, this patch also fixes the cmake setup for
      the experiment of EXT_COMP_REFS, as when EXT_COMP_REFS is on, it
      shall always have ONE_SIDED_COMPOUND on (but that was not the case
      without this patch).
      
      We leave EXT_COMP_REFS for the time being, even though it is also
      adopted, since by keeping this flag, it may allow its turning off to
      tune the encoder speed. The experiment of EXT_COMP_REFS should be
      removed eventually at the closing of the bitstream.
      
      Change-Id: I0644318e522f5b48d5bba4e4391104a24d43cdc3
      c01dddb7
  2. 01 Nov, 2017 1 commit
    • Zoe Liu's avatar
      Remove redundant macro USE_UNI_COMP_REFS · c6b17d82
      Zoe Liu authored
      USE_UNI_COMP_REFS is always true when ext-comp-refs is enabled and is
      always false otherwise.
      
      Change-Id: Ic6061a4ab88a2ebfeb11f178872ab13909060c0b
      c6b17d82
  3. 16 Oct, 2017 2 commits
    • Sebastien Alaiwan's avatar
      Remove compile guards for CONFIG_EXT_REFS · 365e644a
      Sebastien Alaiwan authored
      This experiment has been adopted, we can simplify the code
      by dropping the associated preprocessor conditionals.
      
      Change-Id: I4705652ac8231ee25f960e8096dc97c2aeed1d20
      365e644a
    • Hui Su's avatar
      Remove the intra-interp experiment · 259d4422
      Hui Su authored
      This experiment uses switchable interpolation filter for intra
      prediction. Current gain is too small to be useful for AV1.
      May explore more for AV2 in the future.
      
      Change-Id: I24ae8c75dc71adf6271eabdb68a81b68a0869fa2
      259d4422
  4. 09 Oct, 2017 1 commit
    • Zoe Liu's avatar
      Add encoder/decoder support to frame_sign_bias · 17af2748
      Zoe Liu authored
      Frame sign bias value will not be signaled in frame header. Instead,
      the sign bias of reference frames are derived from their corresponding
      frame offsets at both encoder and decoder.
      
      The tool of 'frame_sign_bias' is dependent of 'frame_marker'. Compared
      against baseline, the enabling of both tools obtains a small coding gain
      of -0.08 ~ -0.11% in BDRate over Google lowres/midres tests.
      
      Change-Id: I8d85dc427ced0b2152712ccf61be4be6068075b9
      17af2748
  5. 04 Oct, 2017 1 commit
    • Rupert Swarbrick's avatar
      Pack InterpFilters into a single integer · 27e90295
      Rupert Swarbrick authored
      Before this patch, if CONFIG_DUAL_FILTER was true then an MB_MODE_INFO
      stored its filter choices as an array of four numbers, each of which
      was between 0 and 10. It also seems that elements 2 and 3 of the array
      were always the same as elements 0 and 1 when used.
      
      This patch defines a new type(def) called InterpFilters together with
      constructor and extractor functions. When CONFIG_DUAL_FILTER is zero,
      InterpFilters is a synonym for InterpFilter and the constructor and
      extractor functions should compile away to nothing. When it is
      nonzero, InterpFilters is a uint32_t which stores the x filter in the
      high part and the y filter in the low part (this looks strange, but
      matches the old numbering).
      
      Making this change allows us to get rid of lots of special case code
      that was dependent on CONFIG_DUAL_FILTER. The uniform
      extract/make/broadcast interface also actually shortens code in
      general.
      
      Change-Id: I6b24a61bac3e4b220d8d46d0b27cfe865dcfba81
      27e90295
  6. 02 Oct, 2017 1 commit
  7. 08 Sep, 2017 1 commit
    • Hui Su's avatar
      palette-delta-encoding: remove dependency on above SB row · 3748bc2a
      Hui Su authored
      Do not refer to above MB when on SB boundary. This helps to
      reduce line buffer.
      
      Keyframe coding gain on the screen_content testset drops from
      1.28% to 1.20%.
      
      Change-Id: I4b06fd137d6c9ea68d618035381f09d0746ba9e8
      3748bc2a
  8. 02 Sep, 2017 1 commit
  9. 23 Aug, 2017 1 commit
    • Zoe Liu's avatar
      Remove duplicate macros · 53fd2ae0
      Zoe Liu authored
      For the tool of ext-comp-refs
      
      Change-Id: I5a64b2206b34b3b18ca897b1d711533a4525a7f0
      53fd2ae0
  10. 16 Aug, 2017 1 commit
    • Zoe Liu's avatar
      Add dependency of ext-comp-refs on one-sided-compound · 5a978838
      Zoe Liu authored
      When ext-comp-refs is enabled, one-sided-compound is enabled by default,
      which ensures the use of ext-comp-refs is an extension of
      one-sided-compound. Both coding tools allow the use of same-sided
      reference frame pairs for compound prediction.
      
      Also, remove the dependency of ext-comp-refs on var-refs, i.e. these two
      coding tools can be independently enabled. They can still work together
      if both are enabled simultaneously.
      
      Change-Id: I3134e7e2956dc35d557fe814f5d801d473683650
      5a978838
  11. 10 Aug, 2017 1 commit
    • Urvang Joshi's avatar
      Remove PALETTE flag · c6300aa1
      Urvang Joshi authored
      This experiment is now adopted as it was cleared by Tapas.
      
      Note: Palette use can still be controlled by command-line option
      "--tune-content=..." in 'aomenc'.
      
      Change-Id: I832f49f20f60c34bdef5b424755849c496687e87
      c6300aa1
  12. 20 Jul, 2017 1 commit
    • Zoe Liu's avatar
      Add support to the experiment of altref2 · 97ad058e
      Zoe Liu authored
      This CL adds an extra alt-ref reference frame, namely ALTREF2_FRAME,
      and designs the contexts for ALTREF2_FRAME.
      
      Change-Id: I12fe8629b868aebf6c2b54260fca5abc38f90ae6
      97ad058e
  13. 12 Jul, 2017 1 commit
    • Zoe Liu's avatar
      Further work on ext-comp-refs for ref frame coding · fcf5fa27
      Zoe Liu authored
      (1) Work with var-refs to remove redundant bits in ref frame
          coding;
      (2) Add a new uni-directional compound reference pair:
          (LAST_FRAME, LAST3_FRAME);
      (3) Redesign the contexts for encoding uni-directional reference frame
          pairs;
      (4) Use aom_entropy_optimizer to collect stats for all the default
          probability setups related to the coding of reference frames.
      
      Compared against the baseline (default enabled tools excluding ext-tx
      and global-motion for encoder speed concern) with one-sided-compound,
      the coding gain of ext-comp-refs + var-refs - one-sided-compound is:
      
      lowres: avg_psnr -0.385%; ovr_psnr -0.378% ssim -0.344%
      midres: avg_psnr -0.466%; ovr_psnr -0.447% ssim -0.513%
      
      AWCY - High Latency:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.2758 | -0.1526 | -0.0965 |  -0.2581 | -0.2492 | -0.2534 |    -0.2118
      
      AWCY - Low Latency:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -1.0467 | -1.4500 | -0.9732 |  -0.9928 | -1.0407 | -1.0180 |    -1.0049
      
      Compared against the baseline (default enabled tools excluding ext-tx
      and global-motion for encoder speed concern) without
      one-sided-compound, the coding gain of
      ext-comp-refs + var-refs - one-sided-compound is:
      
      lowres: avg_psnr -0.875%; ovr_psnr -0.877% ssim -0.895%
      midres: avg_psnr -0.824%; ovr_psnr -0.802% ssim -0.843%
      
      Change-Id: I8de774c9a74c20632ea93ccb0c17779fa94431cb
      fcf5fa27
  14. 19 Jun, 2017 1 commit
    • Zoe Liu's avatar
      Add new coding tool of ext-comp-refs · c082bbcb
      Zoe Liu authored
      The tool of ext-comp-refs adds the uni-directional compound reference
      prediction. In details, 3 pairs of uni-direcitonal compound references
      are added for the comp ref prediction:
      (LAST_FRAME, LAST2_FRAME),
      (LAST_FRAME, GOLDEN_FRAME), and
      (BWDREF_FRAME, ALTREF_FRAME).
      
      This new tool of ext-comp-refs will eventually overwrite
      one-side-compound and have the two coding tools to merge to one.
      
      It achieves -0.35 ~ -0.55% coding gains in BDRate, compared against
      AV1 baseline with the default experiments on, but without
      one-sided-compound. It achieves -0.2% ~ -0.3% coding gains when
      one-sided-compound is on. It achieves larger gains on higher
      resolution.
      
      Change-Id: Icbdb16e97b96aaebaf2213f5f72d5331e2e358eb
      c082bbcb
  15. 13 Jun, 2017 1 commit
    • Zoe Liu's avatar
      Add encoder/decoder pipeline to support single ref comp modes · 85b66463
      Zoe Liu authored
      Now the single ref comp mode should work with WEDGE and
      COMPOUND_SEGMENT. For motion_var, the OBMC_CAUSAL mode uses the 2nd
      predictor if the neighboring block is single ref comp mode predicted.
      
      This patch removes the mode of SR_NEAREST_NEWMV and leaves four
      single ref comp modes in total:
      
      SR_NEAREST_NEARMV
      SR_NEAR_NEWMV
      SR_ZERO_NEWMV
      SR_NEW_NEWMV
      
      Change-Id: If6140455771f0f1a3b947766eccf82f23cc6b67a
      85b66463
  16. 29 May, 2017 1 commit
  17. 16 May, 2017 1 commit
  18. 12 May, 2017 1 commit
    • hui su's avatar
      Palette: use color cache to compress base colors · 33567b21
      hui su authored
      Get a list of palette base colors that are used in the above and
      left blocks, referred to as "color cache". For each cache color,
      signal if it is present in current block's palette, so that we
      don't need to transmit their raw values.
      
      When palette-delta-encoding is enabled, compression is improved
      by 2% on keyframe and 1% overall for the screen_content testset.
      
      Change-Id: I4cb027f1904aa9d0ab1c8f00ea9ee34bf5f16234
      33567b21
  19. 28 Apr, 2017 1 commit
  20. 27 Apr, 2017 2 commits
    • Zoe Liu's avatar
      Add new compound modes using single reference · 239f06b3
      Zoe Liu authored
      The hookup with the encoder-decoder pipeline will be in the following
      CLs. This is under the experiment of compound-singleref, with ext-
      inter enabled.
      
      Change-Id: I6523a1a6525539eb7c6aa6c5e11724a694e8bf6c
      239f06b3
    • hui su's avatar
      Refactor ext-intra · 0a6731f5
      hui su authored
      Remove the code about block size dependent angle steps and deltas,
      as they are modefied to be the same for all blocks in c81ea6e0.
      
      BUG=aomedia:442
      
      Change-Id: I54607dd752ef895c1418f979410b14c02fc9ce22
      0a6731f5
  21. 21 Feb, 2017 1 commit
  22. 23 Jan, 2017 1 commit
    • Emil Keyder's avatar
      Rename NONE to NONE_FRAME. · 01770b3e
      Emil Keyder authored
      This follows the naming for the other frame types, and allows libaom
      to be compiled against other libraries that also #define NONE.
      
      Change-Id: Ic2e2814587bbc5ea67385a9af775396d29b7dde0
      01770b3e
  23. 14 Dec, 2016 1 commit
    • hui su's avatar
      Refactor ext-intra · 45dc597a
      hui su authored
      Miscellaneous changes. Mostly code simplification and cleanup.
      
      Make luma max angle delta depend on block size, which is the
      way it was before the nextgenv2 branch merge.
      
      Also some fixes for compatibility of ext-intra and alt-intra.
      
      Change-Id: I2ce869e6ba7dee765a8dc4802f5e88040db3df22
      45dc597a
  24. 09 Dec, 2016 1 commit
    • hui su's avatar
      Add intra-interp experiment flag · eda3d764
      hui su authored
      intra-interp experiment allows intra prediction to use different
      interpolation filters. It was part of the ext-intra in the nextgenv2
      branch.
      
      Change-Id: I27ab692494dc79bb92e457dbf9a72988577f1c6d
      eda3d764
  25. 01 Dec, 2016 1 commit
  26. 29 Nov, 2016 1 commit
  27. 28 Oct, 2016 1 commit
    • Zoe Liu's avatar
      Clean the code in ref frame context decision for ext-refs · 782c9643
      Zoe Liu authored
      For compound mode, it is a sure thing that one of the 2 reference frames
      would be either a forward predictive reference, or a backward predictive
      reference, and the other would provide a different prediction.
      
      Change-Id: I8d7b40525bec4db0f26ba255c8eefa9f20bd52a3
      782c9643
  28. 20 Oct, 2016 1 commit
    • Zoe Liu's avatar
      Sync with aom branch for ext-refs · 6cfaff95
      Zoe Liu authored
      Plus a small code clean up. The experiment of EXT_REFS, compared against
      the baseline, using Overall PSNR, now obtains a gain on lowres as:
      Avg: -5.818; BDRate: -5.653
      
      Compared against the previous EXT_REFS results on lowres, a tiny gain is
      obtained as:
      Avg: -0.047, BDRate: -0.063
      
      (1) 780952 Add encoder first pass support to bi-prediction in EXT_REFS
      (2) f91498 Add pred prob handling for new references in EXT_REFS
      (3) e91472 Add decoder support for bi-direct prediction in EXT_REFS
      (4) 0dbac9 Add encoder support to new references in EXT_REFS
      (5) ad70cc Remove hard-coded number for EXT_REFS
      (6) 9c1e2f Add the use of new reference frames at encoder in EXT_REFS
      (7) 6d4fde Add the experiment flag of EXT_REFS
      
      Change-Id: I26f7ca45b9ede7579fdb9d0d6a1a91f4334599bd
      6cfaff95
  29. 09 Sep, 2016 1 commit
    • James Zern's avatar
      s/INTERP_FILTER/InterpFilter/ · 7b9407a8
      James Zern authored
      this matches style guidelines and stabilizes successive runs of
      clang-format across the tree. remaining types should be address in
      successive commits.
      
      Change-Id: I6ad3f69cf0a22cb9a9b895b272195f891f71170f
      7b9407a8
  30. 01 Sep, 2016 2 commits
  31. 30 Aug, 2016 1 commit
  32. 12 Aug, 2016 1 commit
  33. 17 Jun, 2016 1 commit
    • Zoe Liu's avatar
      Merge bi-predictive frames to EXT_REFS · 5805a14c
      Zoe Liu authored
      This patch removed the experiment of BIDIR_PRED and merged the feature
      into the experiment of EXT_REFS:
      
      (1) Each frame now has up to 6 reference frames, namely
          LAST_FRAME, LAST2_FRAME, LAST3_FRAME, GOLDEN_FRAME, (forward) and
          BWDREF_FRAME, ALTREF_FRAME (backward);
          LAST4_FRAME has been removed;
      (2) First pass still keeps the 8 updates:
          KF_UPDATE, LF_UPDATE, GF_UPDATE, ARF_UPDATE, OVERLAY_UPDATE, and
          BRF_UPDATE, LAST_BIPRED_UPDATE, BI_PRED_UPDATE;
      (3) show_existing_frame==1 is supported in the experiment of EXT_REFS;
      (4) New encoding modes are added for both single-ref and compound cases,
          through the use of the 2 extra forward references (LAST2 & LAST3)
          and the 1 extra backward reference (BWDREF).
      
      RD performance wise, using Overall PSNR: Avg/BDRate
              Bipred only      Prev EXT_REFS    Current EXT_REFS with bipred
      lowres: -3.474/-3.324    -1.748/-1.586    -4.613/-4.387
      derflr: -2.097/-1.353    -1.439/-1.215    -3.120/-2.252
      midres: -2.129/-1.901    -1.345/-1.185    -2.898/-2.636
      
      If in vp10/encoder/firstpass.h, change BFG_INTERVAL from 2 to 3, i.e. to
      use 2 bi-predictive frames than 1, a further improvement may be
      obtained:
                       Current EXT_REFS with bipred
              1 bi-predictive frame    2 bi-predictive frames
      lowres: -4.613/-4.387            -4.675/-4.465
      derflr: -3.120/-2.252            -3.333/-2.516
      midres: -2.898/-2.636            -3.406/-3.095
      
      Change-Id: Ib06fe9ea0a5cfd7418a1d79b978ee9d80bf191cb
      5805a14c
  34. 24 May, 2016 1 commit
    • Zoe Liu's avatar
      Added an experiment "bidir_pred" for backward prediction · cf5083d4
      Zoe Liu authored
      Major parts have been implemented as follows:
      (1) Added BRF_UPDATE, LASTNRF_UPDATE, and NRF_UPDATE in firstpass.c;
      (2) Added the handling for the scenario of
      "cpi->common.show_existing_frame == 1" at the encoder;
      (3) Added a new reference frame of BWDREF_FRAME;
      (4) Have bwd-ref work with upsampled references.
      
      Note that when the experiment of "ext_refs" turned on, this experiment
      will be turned off automatically currently.
      
      RD performance in Overall PSNR has been improved, compared against the
      VP10 baseline:
      
      lowres: Avg -3.312; BDRate -3.154
      derflr: Avg -1.927; BDRate -1.176
      midres: Avg -2.149; BDRate -2.001
      hdres : Avg -0.567; BDRate -0.588
      
      Change-Id: I4c06ff51cc20194bffbd4d2346e57ba3dcf6b62c
      cf5083d4
  35. 18 May, 2016 2 commits
  36. 07 May, 2016 1 commit