1. 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
    • Yue Chen's avatar
      Relocate supertx prob update · fb29aec4
      Yue Chen authored
      Move it from vp10_adapt_intra_frame_probs() to
      vp10_adapt_inter_frame_probs() because intra frames do not use
      supertx.
      
      Change-Id: I28c7391944848666054d4b990ac17a8ae08aaaee
      fb29aec4
  2. 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
  3. 15 Jan, 2016 2 commits
    • 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
    • Debargha Mukherjee's avatar
      Fixing some compile issues · eee6afe0
      Debargha Mukherjee authored
      Fixes a breakage introduced with the latest merge from master and
      cleans up a couple of compiler warnings.
      
      Change-Id: Ia55b39ba78e43f6fe52c54d7f34faa4dd6bbbf26
      eee6afe0
  4. 12 Jan, 2016 4 commits
    • Jingning Han's avatar
      Generate compound reference motion vector · 33cc1bd2
      Jingning Han authored
      This commit allows the codec to add motion vector pairs into
      the candidate list. It further improves the compression performance
      by 0.1% across derf, hevcmr, stdhd, and hevchr sets without adding
      encode/decode time.
      
      Change-Id: I88d36da25a2a89bb506d411844af667081eba98b
      33cc1bd2
    • Alex Converse's avatar
      Compress the final ANS state. · 0f840cc3
      Alex Converse authored
      The '110' prefix on a final byte indicates a superframe marker. Coded
      data is not allowed to use this pattern on a final byte.
      
      Code |state - l_base| little endian with the following prefix scheme:
      Prefix '00': Single byte coded state.
      Prefix '01': Two bytes le coded state.
      Prefix '10': Three bytes le coded state.
      
      Change-Id: Ibc953b67675b567394b93de39b7cb22cadc47435
      0f840cc3
    • Alex Converse's avatar
      Code DCT tokens with ANS · d1893f64
      Alex Converse authored
      Change-Id: I452f9675325a5f45bfbbe3e7e135009a125539f1
      d1893f64
    • Alex Converse's avatar
      Add an implementation of Asymetric Numeral Systems (ANS). · 9ffcb469
      Alex Converse authored
      Change-Id: Ie41bc72127e700887566dcc951da9d83a0b94891
      9ffcb469
  5. 11 Jan, 2016 1 commit
    • Jingning Han's avatar
      Refactor ref mv stack system · 253a200d
      Jingning Han authored
      This commit re-works the reference motion vector stack process
      and make it support extended context set. It unifies reference
      motion vector checking process for row and column scan, as well as
      for single block scan.
      
      Change-Id: I68c05cde93cf8b0ca2ef4d1523399f405bd0a337
      253a200d
  6. 08 Jan, 2016 3 commits
  7. 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
  8. 28 Dec, 2015 1 commit
  9. 18 Dec, 2015 1 commit
    • 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
  10. 15 Dec, 2015 1 commit
    • Debargha Mukherjee's avatar
      Replace DST1 in ext_tx experiment with DST2 · 49d9730f
      Debargha Mukherjee authored
      The DST2 is implemented by input alternate sign-flip, followed
      by DCT, followed by output reversal.
      Results are roughly the same, but it should be easier to optimize
      the DST2.
      [Interestingly a mtrix multuiply implementation is about 0.1%
      better].
      
      Change-Id: If9ae5fdba87767fb0e6c163a62b77ee66a8d3afc
      49d9730f
  11. 14 Dec, 2015 1 commit
  12. 10 Dec, 2015 5 commits
  13. 08 Dec, 2015 2 commits
    • hui su's avatar
      Bring palette back to nextgenv2 · c93e5cc3
      hui su authored
      It was removed by the master branch merge.
      
      Change-Id: I4b2a524c9e052e41063359afcb4ba22bf78344cf
      c93e5cc3
    • hui su's avatar
      Miscellaneous changes in reconintra.c · bf0ff090
      hui su authored
      Fix a bug in vp10_has_right;
      Some cosmetic changes.
      
      Tiny performance improvement (0.02%~0.04%) on derflr and hevcmr.
      
      Change-Id: Iee829003a20f32d6185a08bab2bd4201806be2b3
      bf0ff090
  14. 03 Dec, 2015 3 commits
    • Angie Chiang's avatar
      Refactor vp10_xform_quant · 88cae8b4
      Angie Chiang authored
      1) Add facade to quantize b/fp/dc version so that their interface
         are the same.
      2) Merge vp10_xform_quant b/fp/dc version to one function so that
         the code flow in encodemb.c is clear
      
      Change-Id: Ib62d6215438fc2d07f4e7e72393f964832d6746f
      88cae8b4
    • hui su's avatar
      Remove palette from VP10 · 5d3327e8
      hui su authored
      Store it in nextgenv2 for now.
      
      Change-Id: Iab0af0e15246758e3b6e8bde4a74b13c410576fc
      5d3327e8
    • Jingning Han's avatar
      Extend reference motion vector candidate range · e15fb2bb
      Jingning Han authored
      This commit adds top-right corner and collocated block into the
      reference motion vector candidate check list.
      
      Change-Id: I892a4c7fb04ddda44e0f9dfe769471252d40c42b
      e15fb2bb
  15. 01 Dec, 2015 1 commit
    • hui su's avatar
      Speed up angle search in intra mode selection · d7c8bc77
      hui su authored
      Estimate angle histogram using gradient analysis, then skip those
      angles that are unlikely to be chosen.
      
      On ext-intra experiment, turning off filter-intra modes:
      for all-key-frame setting, computation overhead is reduced
      by about 40%, coding gain dropped from +2.08% to +1.96% (derflr);
      with kf-max-dist=150, computation overhead is reduced
      by about 60%, coding gain dropped from +0.58% to +0.49% (derflr).
      
      Change-Id: I36687410fb10561b8e1a8eebb1528cf17755bd5b
      d7c8bc77
  16. 25 Nov, 2015 5 commits
  17. 24 Nov, 2015 2 commits
  18. 23 Nov, 2015 2 commits
    • 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
    • Jingning Han's avatar
      Move n8_w and n8_h out of experiment flag · c335bfeb
      Jingning Han authored
      These primitive variables are commonly required by many other
      experiments as well. The use of n4_w and n4_h was originally
      introduced in the vp9 decoder implementation.
      
      Change-Id: I93d701d891e3860f31150031e3b9a2b29a3993d2
      c335bfeb
  19. 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
  20. 19 Nov, 2015 1 commit