1. 05 Feb, 2016 1 commit
  2. 03 Feb, 2016 3 commits
    • hui su's avatar
      Add 8-tap interpolation filter options for intra prediction · 3b1c7668
      hui su authored
      BD-rate performance improvement (on top of ext-intra):
      derflr  0.22%
      hevclr  0.36%
      hevcmr  0.48%
      hevchr  0.37%
      stdhd   0.19%
      
      Average speed impact on some derf clips is about 40% slower (on
      top of ext-intra). Speed improvment is a to-do.
      
      Change-Id: I8fe3fe8c5e4f60d0462778adbcc15c84dfbe7a25
      3b1c7668
    • Jingning Han's avatar
      Generalize the dynamic reference motion vector coding mode · 4fb8b217
      Jingning Han authored
      This commit generalizes dynamic reference motion vector coding mode
      to support multiple candidate modes in the rate-distortion
      optimization scheme and to support the selection in the bit-stream
      syntax. The maximum number of modes allowed is currently limited to
      4. The syntax elements for the dynamic reference motion vector
      modes are using binary codes. The scheme supports single reference
      frame.
      
      It improves the compression performance
      derf   0.135%
      hevcmr 0.098%
      
      Change-Id: Id053d6ce76e8365e52727bd0d12d28ce3de2e0e8
      4fb8b217
    • Julia Robson's avatar
      Supertx fix for 422 colour subsampling · 4fbd678f
      Julia Robson authored
      Fixes assertion for football_422_4sif.y4m when supertx, var_tx and
      ext_tx are all enabled. Problem was after subsampling, the u and v
      blocks being encoded were no longer square.
      
      Change-Id: Ie626f30a2e64538d33343a26d5124a79a6f2b985
      4fbd678f
  3. 02 Feb, 2016 2 commits
    • Jingning Han's avatar
      Enable adaptive motion vector referencing mode · 67cf8908
      Jingning Han authored
      This commit allows an adaptive motion vector referencing mode
      approach. It checks the available reference motion vector candidate
      list and decides the amount of motion vector referencing modes. The
      current implementation assumes simple binary coding for the syntax.
      
      The compression performance is improved by
      derf   0.11%
      hevcmr 0.38%
      stdhd  0.09%
      hevchr 0.23%
      
      The coding gains due to the new reference motion vector system are
      derf   1.0%
      hevcmr 1.7%
      stdhd  1.4%
      hevchr 1.3%
      
      Change-Id: Idf932fc373546fe59c8741f1b933ff656e8dbc3f
      67cf8908
    • James Zern's avatar
      vp10: remove unused (read|write)_uniform · ebf25868
      James Zern authored
      dead code since:
      5d3327e8 Remove palette from VP10
      
      Change-Id: I4a36575706ea6fffefe5bc778595112ef6ff37d8
      ebf25868
  4. 28 Jan, 2016 1 commit
  5. 27 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Fixes ext-interp experiment · eef57c1e
      Debargha Mukherjee authored
      Fixes integer pel MV usage for the sub8x8 case, which fixes a
      rare mismatch issue.
      
      Also adds some other minor missing code related to filter threshes.
      
      Change-Id: I6b07e6cf9b287ba4b5bd6599af4a7412e50b3bdc
      eef57c1e
  6. 26 Jan, 2016 1 commit
  7. 25 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Some supertx fixes · 9a8a6a1b
      Debargha Mukherjee authored
      Fixes some of the issues introduced by a merge from master.
      
      derflr: -0.893% BDRATE
      hevcmr: -1.667% BDRATE
      
      Change-Id: I4c5b40ec63a6f19521191d3c730af87db3c4bc00
      9a8a6a1b
  8. 22 Jan, 2016 2 commits
    • Yue Chen's avatar
      Adding new compound modes to EXT_INTER experiment · 968bbc7b
      Yue Chen authored
      Combinations of different mv modes for two reference frames
      are allowed in compound inter modes. 9 options are enabled,
      including NEAREST_NEARESTMV, NEAREST_NEARMV, NEAR_NEARESTMV,
      NEAREST_NEWMV, NEW_NEARESTMV, NEAR_NEWMV, NEW_NEARMV, ZERO_ZEROMV,
      and NEW_NEWMV.
      This experiment is mostly deported from the nextgen branch.
      It is made compatible with other experiments
      
      Coding gain of EXT_INTER(derflr/hevcmr/hevchd): 0.533%/0.728%/0.639%
      
      Change-Id: Id47e97284e6481b186870afbad33204b7a33dbb0
      968bbc7b
    • Julia Robson's avatar
      Fixes for var_tx when ext_tx is not enabled · 9fe188e4
      Julia Robson authored
      This patch fixes a couple of issues caused by change-id:
      I15d20ce5292b70f0c2b4ba55c1f1318181481596
      Changes to the code for when the ext_tx experiment is not enabled
      were merged from master but as var_tx does not exist on master
      the changes had not been applied to the case when var_tx experiment
      is enabled
      
      Change-Id: Iaf2b717e6b8626b2b6a03226127221b776b49884
      9fe188e4
  9. 21 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Loop restoration filter · 84ca7a9f
      Debargha Mukherjee authored
      Current implementation is a bilateral filter whose
      parameters are transmitted in the bitstream.
      
      derflr: -0.647% BDRATE
      hevcmr: -0.794% BDRATE
      
      This is a prelimary patch. Various other variations are to
      be investigated next, that will hopefully be less expensive
      on the decoder side.
      
      Change-Id: I50634ae8f5014ad0bf7432306348908a349d81e1
      84ca7a9f
  10. 15 Jan, 2016 1 commit
    • Yue Chen's avatar
      EXT_INTER experiment · 1ac85879
      Yue Chen authored
      NEW2MV is enabled, representing a new motion vector predicted from
      NEARMV. It is mostly ported from nextgen, where it was named
      NEW_INTER.
      A few fixes are done for sub8x8 RDO to correct some misused
      mv references in the original patch.
      A 'bug-fix' for encoding complexity is done, reducing the additional
      encoding time from 50% to 20%. In sub8x8 case, the old patch
      did motion search for every interpolation filter (vp9 only
      searches once). This fix also slightly improves the coding gain.
      This experiment has been made compatible with REF_MV and EXT_REFS.
      
      Coding gain (derflr/hevcmr/hevchd): 0.267%/0.542%/0.257%
      
      Change-Id: I9a94c5f292e7454492a877f65072e8aedba087d4
      1ac85879
  11. 12 Jan, 2016 1 commit
  12. 08 Jan, 2016 3 commits
  13. 07 Jan, 2016 1 commit
  14. 05 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Super transform - ported from nextgen branch · 3787b174
      Debargha Mukherjee authored
      Various additional changes were made to make the experiment
      compatible with misc_fixes.
      
      derflr: +0.979%
      hevcmr: +0.865%
      
      Speed-wise with --enable-supertx the encoder is only about 10%
      slower than without. Decoding impact is about 30% slowdown.
      
      Note this does not work with ext-tx or var-tx yet. That is
      a TODO.
      
      Change-Id: If25af4241a7a9efbd28f58eda3c4f044c7a7ef4b
      3787b174
  15. 04 Jan, 2016 2 commits
  16. 18 Dec, 2015 2 commits
    • Zoe Liu's avatar
      Cleared the EXT_REFS code to make it more legible. · a4d0c714
      Zoe Liu authored
      Change-Id: I309c4e16fd305bcfa590d14f957a9598d23c7ee6
      a4d0c714
    • Zoe Liu's avatar
      Restore the flexibility for the new 3 references · ec36a2b0
      Zoe Liu authored
      For the experiment of EXT_REFS, removed the previous special handling
      on the new last 3 references, i.e. LAST2_FRAME, LAST3_FRAME, and
      LAST4_FRAME, at the decoder, so that these new last references are
      treated the same way as the other 3 references (LAST_FRAME,
      GOLDEN_FRAME, and ALTREF_FRAME). Encoder changes have been made
      accordingly to realize this flexibility.
      
      Change-Id: Ic6546f9443b4377bb7e7b101bfa3e70a8b8d1c65
      ec36a2b0
  17. 15 Dec, 2015 1 commit
    • Yaowu Xu's avatar
      Fix a enc/dec mismatch under CONFIG_MISC_FIXES · c7101830
      Yaowu Xu authored
      The culprit is on the decode side xd->lossless[i] setup was in wrong
      location where segment features are not yet decoded.
      
      Also on the encoder side, transform mode was not set consistently
      between when tx_mode is selected and how tx_mode is enforced in
      tx size selection.
      
      Change-Id: I4c4c32188fda7530cadab9b46d4201f33f7ceca3
      c7101830
  18. 11 Dec, 2015 1 commit
  19. 10 Dec, 2015 3 commits
  20. 08 Dec, 2015 1 commit
  21. 03 Dec, 2015 1 commit
    • hui su's avatar
      Remove palette from VP10 · 5d3327e8
      hui su authored
      Store it in nextgenv2 for now.
      
      Change-Id: Iab0af0e15246758e3b6e8bde4a74b13c410576fc
      5d3327e8
  22. 25 Nov, 2015 1 commit
    • Jingning Han's avatar
      Refactor tokenization coding tree · 2ec5ed25
      Jingning Han authored
      Expand the tokenization tree writing to support per transform block
      type coding in next CLs.
      
      Change-Id: I3560e658f89cc500eb49603f95dd2b4e99045f5b
      2ec5ed25
  23. 23 Nov, 2015 1 commit
    • Debargha Mukherjee's avatar
      Reduce transform options for ext-tx experiment · 56ab215d
      Debargha Mukherjee authored
      Reduces the transform optons for INTRA as well as INTER when
      transform size is 16x16 to not use any of the DSTs.
      Thus, a total of 10 options are used for 16x16, while 4x4
      and 8x8 still uses 17 options.
      
      derflr/hevchd actually improves a little, while hevcmr drops
      a little.
      
      About 10% speed improvement.
      
      Change-Id: I920a182231e052cdd622f8bb67085c16c572cb1e
      56ab215d
  24. 21 Nov, 2015 1 commit
    • Zoe Liu's avatar
      Added 3 more reference frames for inter prediction. · 3ec1601e
      Zoe Liu authored
      Under the experiment of EXT_REFS: LAST2_FRAME, LAST3_FRAME, and
      LAST4_FRAME.
      
      Coding efficiency: derflr +1.601%; hevchr +1.895%
      Speed: Encoder slowed down by ~75%
      
      Change-Id: Ifeee5f049c2c1f7cb29bc897622ef88897082ecf
      3ec1601e
  25. 19 Nov, 2015 1 commit
  26. 17 Nov, 2015 1 commit
    • hui su's avatar
      Merge MISC_FIXES · 66f2f65e
      hui su authored
      Remove MISC_FIXES flags except for the changes on MV precision, which
      has a 0.1% performance drop.
      
      On derflr, the impact is -0.012%.
      
      Change-Id: I0a74e5a212dd0cb827192a318c92a714c9681e45
      66f2f65e
  27. 13 Nov, 2015 1 commit
    • hui su's avatar
      refactor ext-intra · 4aa50c17
      hui su authored
      Coding gain remains about the same, while overall speed is
      substantially increased.
      
      Change-Id: I2989bebcfd21092cd6a02653d4df4a3bf6780874
      4aa50c17
  28. 09 Nov, 2015 1 commit
    • Johann's avatar
      Release v1.5.0 · cbecf57f
      Johann authored
      Javan Whistling Duck release.
      
      Change-Id: If44c9ca16a8188b68759325fbacc771365cb4af8
      cbecf57f
  29. 06 Nov, 2015 1 commit
    • Debargha Mukherjee's avatar
      New interpolation experiment · 85514c40
      Debargha Mukherjee authored
      Adds a new interpolation experiment.
      
      Improves entropy coding to send the filter type only if
      the motion vectors have subpel components.
      Adds one new 8-tap smooth filter, and tweaks the others.
      
      derflr: +0.695%
      hevcmr: +0.305%
      
      About 5% encode slowdown. No visible impact for decoding.
      
      Also makes the interpolation framework flexible to support both
      strictly interpolating filters as well as non-interpolating
      filters that filter integer offsets. This is mainly for
      further experimentation and if not found useful the code will
      be removed.
      
      Change-Id: I8db9cde56ca916be771fe54a130d608bf10786e6
      85514c40
  30. 04 Nov, 2015 1 commit
    • hui su's avatar
      ext-intra experiment · be3559ba
      hui su authored
      Currently there are two parts in this experiment: extra directional intra
      prediction modes and the filter intra modes migrated from the nextgen branch.
      
      Several macros are defined in "blockd.h" to provide controls of the experiment
      settings. Setting "DR_ONLY" as 1 (default is 0) means we only use directional
      modes, and skip the filter-intra modes; "EXT_INTRA_ANGLES" (default is 128)
      defines the number of different angles we want to support; setting
      "ANGLE_FAST_SEARCH" as 1 (default is 1) means we use fast sub-optimal search
      for the best prediction angle, instead of exhaustive search. The fast search
      is about 6 times faster than the exhaustive search, while preserving about
      60% of the coding gains.
      
      With extra directional prediction modes (fast search), we observe the following
      code gains (number in parentheses is for all-key-frame setting):
      derflr +0.42%  (+1.79%)
      hevclr +0.78%  (+2.19%)
      hevcmr +1.20%  (+3.49%)
      stdhd  +0.56%
      Speed-wise, about 110% slower for key frames, and 30% slower overall.
      
      The gains of filter intra modes mostly add up with the gains of directional
      modes. The overall coding gain of this experiment:
      derflr +0.94%
      hevclr +1.46%
      hevcmr +1.94%
      stdhd  +1.58%
      
      Change-Id: Ida9ad00cdb33aff422d06eb42b4f4e5f25df8a2a
      be3559ba