1. 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
  2. 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
  3. 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
  4. 23 May, 2017 1 commit
  5. 18 May, 2017 1 commit
  6. 15 May, 2017 1 commit
  7. 05 May, 2017 1 commit
  8. 27 Apr, 2017 1 commit
    • 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
  9. 20 Apr, 2017 1 commit
    • Alex Converse's avatar
      intrabc: Add initial skeleton · 28744309
      Alex Converse authored
      Missing features:
      * RDOPT (Forced on for certain blocks)
      * Any form of border extension
      * Non MI sized right and bottom edges
      * MV prediction
      
      Present features:
      * Force intrabc for some blocks
      * Carry intrabc in the bitstream
      * Validate DV is causal
      * Reconstruct intrabc block assuming border extension is unnecessary
      
      Change-Id: Ib1f6868e89bfacc2a4edfc876485bad1b347263b
      28744309
  10. 11 Apr, 2017 1 commit
  11. 23 Mar, 2017 1 commit
    • David Barker's avatar
      Re-enable av1_nmv_ctx() when ext-inter is enabled · 9620bcd5
      David Barker authored
      Currently, mbmi->ref_mv_idx can be set to a nonzero value
      on the encoder side if mbmi->mode is one of NEARMV, NEWMV,
      NEAR_NEARMV, or NEW_NEWMV. But it can only be nonzero on the
      decoder side if the mode is NEARMV or NEWMV. Hence av1_nmv_ctx
      has previously been disabled when ext-inter is enabled, to
      prevent a mismatch due to this.
      
      This patch changes the encoder behaviour to match the decoder
      behaviour.
      
      Change-Id: Icfe41fb72e76731ae373fe8c6065f5e003f6414f
      9620bcd5
  12. 08 Mar, 2017 1 commit
  13. 07 Mar, 2017 1 commit
  14. 02 Mar, 2017 1 commit
    • Sarah Parker's avatar
      Turn off global motion for sub8x8 blocks · ae7c458a
      Sarah Parker authored
      Lowres: 0.03% improvement, 1% improvement on waterfall_cif.y4m
      Midres: 0.085% overall improvement, 1.253% improvement on station2_480p25.y4m
      Change-Id: I3872934d978bb4ca828c6b9acd2fdb951d9da299
      ae7c458a
  15. 27 Feb, 2017 2 commits
    • Debargha Mukherjee's avatar
      Better block center in gm_get_motion_vector fn · f6dd3c68
      Debargha Mukherjee authored
      Also supports homography models for future experiments.
      
      Change-Id: I4510540f54133e063891ed491c95c087222f7810
      f6dd3c68
    • Debargha Mukherjee's avatar
      Integerize warped motion computation · e6eb3b53
      Debargha Mukherjee authored
      Integerizes computation of the least squares for warped motion.
      The model is restricted to only Affine. Affine seems easiest
      to compute and integerize since it can be split into two 3-dim
      least squares problems, as opposed to rotation-zoom which needs
      a 4-dim least-squares problem to be solved.
      The current implementation requires only one division per block.
      
      BDRATE impact is mminimal. The upgrade to the affine model improves
      coding efficiency but integerization also degrades efficiency a
      little. Overall there is a net gain of about -0.07% BDRATE on
      the lowres set.
      BDRATE lowres: -1.113% with ----enable-warped-motion vs. without
      (up from -1.044%).
      
      Change-Id: I6b9216ac0737d76f59054293eabee48e17739ec4
      e6eb3b53
  16. 04 Feb, 2017 1 commit
  17. 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
  18. 15 Dec, 2016 1 commit
  19. 02 Dec, 2016 1 commit
  20. 29 Nov, 2016 1 commit
    • Yue Chen's avatar
      Add WARPED_MOTION experiment · 69f18e1a
      Yue Chen authored
      Performance gain (REF_MV on by default)
      WARPED_MOTION: 1.061%
      WARPED_MOTION+MOTION_VAR: 2.917%
      MOTION_VAR: 2.337%
      
      Change-Id: I43f742a02cdd43d13ef333a0a15087062ad020ab
      69f18e1a
  21. 21 Nov, 2016 3 commits
  22. 19 Nov, 2016 1 commit
    • Jingning Han's avatar
      Pre-store the pred_diff for nmv context · 3f338830
      Jingning Han authored
      Replace the int_mv storage in the ref_mv_stack struct with unit8_t
      integer to indicate the prediction difference level.
      
      Change-Id: I0bfbcab350a46ecdd5bc47bd918cce9614365227
      3f338830
  23. 18 Nov, 2016 1 commit
    • Jingning Han's avatar
      Sync reference frame type use case · 731af49c
      Jingning Han authored
      This commit re-synchronize the reference frame type use cases in
      the dynamic motion vector referencing system.
      
      Change-Id: Ib25231c716db4176cd67cbdc889472a06b607194
      731af49c
  24. 30 Oct, 2016 1 commit
    • Deng's avatar
      simp-mv-pred integration with ref-mv · ca8d24d4
      Deng authored
      This commit adds simp-mv-pred experiment. The experiment is to work on
      top of ref-mv experiment to save memory bandwidth and reduce the size
      of line buffer needed in ref-mv experiment.
      
      When compared to ref-mv, this experiment showed:
      low-delay BDR gain: 0.03%
      High-delay BDR gain: 0.01%
      memory/memory bandwidth saving: 40%
      local memory/gate count saving: 20%
      
      Change-Id: Ic4006e041fc58ede411da83d0d730c464ebe1749
      ca8d24d4
  25. 29 Oct, 2016 1 commit
  26. 27 Oct, 2016 1 commit
  27. 19 Oct, 2016 1 commit
    • Urvang Joshi's avatar
      Code cleanup: mainly rd_pick_partition and methods called from there. · 52648448
      Urvang Joshi authored
      - Const correctness
      - Refactoring
      - Make variables local when possible etc
      - Remove -Wcast-qual to allow explicitly casting away const.
      
      Cherry-picked from aomedia/master: c27fcccc
      And then a number of more const correctness changes to make sure other
      experiments build OK.
      
      Change-Id: I77c18d99d21218fbdc9b186d7ed3792dc401a0a0
      52648448
  28. 05 Oct, 2016 2 commits
  29. 30 Sep, 2016 1 commit
  30. 29 Sep, 2016 1 commit
  31. 28 Sep, 2016 2 commits
  32. 26 Sep, 2016 3 commits
  33. 13 Sep, 2016 1 commit