1. 14 Oct, 2012 4 commits
  2. 12 Oct, 2012 3 commits
  3. 11 Oct, 2012 2 commits
  4. 10 Oct, 2012 1 commit
    • Jim Bankoski's avatar
      convert copy16x16 to rtcd · 89f060e8
      Jim Bankoski authored
      Convert copy16x16 from invoke to rtcd.  The first in a long
      string of converts.
      
      Change-Id: I296b0aa32f40e9fb649f7a3cb914a4e5300cad63
      89f060e8
  5. 09 Oct, 2012 2 commits
    • John Koleszar's avatar
      write_kfmodes: use update_skip_probs() · d94d2b75
      John Koleszar authored
      Use the common update_skip_probs() function rather than duplicating its
      logic in write_kf_modes().
      
      Change-Id: I2890a28f6907cb79ffe0fb21d20f0ef98b85cdd9
      d94d2b75
    • Ronald S. Bultje's avatar
      Selectable transform size try 2. · 9ca3c8b2
      Ronald S. Bultje authored
      Results: derf (vanilla or +hybridtx) +0.2% and (+hybrid16x16
      or +tx16x16) +0.7%-0.8%; HD (vanilla or +hybridtx) +0.1-0.2%
      and (+hybrid16x16 or +tx16x16) +1.4%, STD/HD (vanilla or +hybridtx)
      about even, and (+hybrid16x16 or +tx16x16) +0.8-1.0%.
      
      Change-Id: I03899e2f7a64e725a863f32e55366035ba77aa62
      9ca3c8b2
  6. 05 Oct, 2012 2 commits
    • Deb Mukherjee's avatar
      Mismatch bug-fix when transform expts are off · 105746c8
      Deb Mukherjee authored
      A variety of issues related to tangling of various hybrid transform
      experiments.
      
      Change-Id: I84dac65ff513f8b024407760df55fffa95e198de
      105746c8
    • Paul Wilkins's avatar
      Fix SIMD unsafe use of floating point. · 81c60419
      Paul Wilkins authored
      This commit fixes unsafe simd / floating point interactions arising
      from the current hybrid and 16x16 transform implementation.
      These led to a raft of bugs and issues when the project was
      built using VS2008 for Win32 though they did not show up with
      the unix builds.
      
      Gerrit makes a meal out of presenting the fix but all I have actually
      done is indent the body of each function that uses floating point by
      one level and bracket with emms instructions using  the function
      vp8_clear_system_state(). See below.
      
      function () {
        vp8_clear_system_state();
        {
        ... function body
        }
        vp8_clear_system_state();
      }
      
      This is almost certainly over the top in terms of number of emms
      instructions but is a temporary measure pending implementation of
      integer variants of each function to replace the floating point.
      
      Limited testing suggests that this fixes the problems that arose for
      Win32 VS2008 when the hybrid or 16x16 transforms were enabled.
      
      Change-Id: I7c9a72bd79315246ed880578dec51e2b7c178442
      81c60419
  7. 27 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Entropy coding for hybrid transform · 3f5d60b3
      Deb Mukherjee authored
      Separates the entropy coding context models for 4x4, 8x8 and 16x16
      ADST variants.
      
      There is a small improvement for HD (hd/std-hd) by about 0.1-0.2%.
      Results on derf/yt are about the same, probably because there is not
      enough statistics.
      
      Results may improve somewhat once the initial probability tables are
      updated for the hybrid transforms which is coming soon.
      
      Change-Id: Ic7c0c62dacc68ef551054fdb575be8b8507d32a8
      3f5d60b3
  8. 21 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Separating 8x8DCT use from hybridtransform8x8 · 70e21afb
      Deb Mukherjee authored
      With this change, even if hybridtransform8x8 experiment is off,
      8x8 dct is used for the I8x8 mode. However note that the gains
      observed with the hybridtransform8x8 experiment will now be less,
      since part of the gain is now merged in.
      
      Change-Id: I9afb3880906fd0a1368a374041fc08efcf060c54
      70e21afb
  9. 20 Sep, 2012 1 commit
  10. 14 Sep, 2012 2 commits
  11. 13 Sep, 2012 1 commit
  12. 12 Sep, 2012 2 commits
    • Deb Mukherjee's avatar
      Adds feature for companded MV encoding · 2b26cf17
      Deb Mukherjee authored
      The high-precision (1/8) pel bit is turned off if the reference
      MV is larger than a threshold. The motivation for this patch is
      the intuition that if motion is likely large (as indicated by
      the reference), there is likley to be more motion blur, and as
      a result 1/8 pel precision would be wasteful both in rd sense
      as well as computationally.
      
      The feature is incorporated as part of the newmventropy experiment.
      There is a modest RD improvement with the patch. Overall the
      results with the newmventropy experiment with the threshold being
      16 integer pels are:
      
      derf: +0.279%
      std-hd: +0.617%
      hd: +1.299%
      yt: +0.822%
      
      With threshold 8 integer pels are:
      
      derf: +0.295%
      std-hd: +0.623%
      hd: +1.365%
      yt: +0.847%
      
      Patch: rebased
      Patch: rebase fixes
      
      Change-Id: I4ed14600df3c457944e6541ed407cb6e91fe428b
      2b26cf17
    • Deb Mukherjee's avatar
      Cleanups for hybrid transform · d406334f
      Deb Mukherjee authored
      Some cleanups on the transform size and type selection logic.
      
      Change-Id: If2e9675459482242cf83b4f7de7634505e3f6dac
      d406334f
  13. 11 Sep, 2012 1 commit
  14. 10 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      Hybrid transform cleanups · c5af82b7
      Deb Mukherjee authored
      Some cleanups that will make it easier to maintain the code
      and incorporate upcoming changes on  entropy coding for the
      hybrid transforms.
      
      Change-Id: I44bdba368f7b8bf203161d7a6d3b1fc2c9e21a8f
      c5af82b7
  15. 07 Sep, 2012 2 commits
    • Paul Wilkins's avatar
      Partial merge of NEWBESTREFMV and NEW_MVREF. · 778ec421
      Paul Wilkins authored
      This commit merges those parts of the CONFIG_NEW_MVREF
      that specifically relate to choosing a better set of candidate
      MV references into the NEWBESTREFMV experiment.
      
      CONFIG_NEW_MVREF will then be used for changes relating
      to the explicit coding of a cost optimized MV reference in the
      bitstream as part of MV coding.
      
      Change-Id: Ied982c0ad72093eab29e38b8cd74d5c3d7458b10
      778ec421
    • Paul Wilkins's avatar
      MV reference changes · 38e1c791
      Paul Wilkins authored
      Extend experiment to use both vectors from MBs
      coded using compound prediction as candidates.
      
      In final sort only consider best 4 candidates
      for now but make sure 0,0 is always one of them.
      
      Other minor changes to new MV reference code.
      Pass in Mv list to vp8_find_best_ref_mvs().
      
      Change-Id: Ib96220c33c6b80bd1d5e0fbe8b68121be7997095
      38e1c791
  16. 06 Sep, 2012 1 commit
    • Deb Mukherjee's avatar
      New motion vector entropy coding · 00f9eb65
      Deb Mukherjee authored
      Adds a new experiment with redesigned/refactored motion vector entropy
      coding. The patch also takes a first step towards separating the
      integer and fractional pel components of a MV. However the fractional
      pel encoding still depends on the integer pel part and so they are
      not fully independent. Further experiments are in progress to see
      how much they can be decoupled without affecting performance.
      All components including entropy coding/decoding, costing for MV
      search, forward updates and backward updates to probability tables,
      have been implemented.
      
      Results so far:
      derf: +0.19%
      std-hd: +0.28%
      yt: +0.80%
      hd: +1.15%
      
      Patch: Simplifies the fractional pel models:
      derf: +0.284%
      std-hd: +0.289%
      yt: +0.849%
      hd: +1.254%
      
      Patch: Some changes in the models, rebased.
      derf: +0.330%
      std-hd: +0.306%
      yt: +0.816%
      hd: +1.225%
      
      Change-Id: I646b3c48f3587f4cc909639b78c3798da6402678
      00f9eb65
  17. 30 Aug, 2012 1 commit
    • Jingning Han's avatar
      hybrid transform of 16x16 dimension · de6dfa6b
      Jingning Han authored
      Enable ADST/DCT of dimension 16x16 for I16X16 modes. This change provides
      benefits mostly for hd sequences.
      
      Set up the framework for selectable transform dimension.
      
      Also allowing quantization parameter threshold to control the use
      of hybrid transform (This is currently disabled by setting threshold
      always above the quantization parameter. Adaptive thresholding can
      be built upon this, which will further improve the coding performance.)
      
      The coding performance gains (with respect to the codec that has all
      other configuration settings turned on) are
      
      derf:   0.013
      yt:     0.086
      hd:     0.198
      std-hd: 0.501
      
      Change-Id: Ibb4263a61fc74e0b3c345f54d73e8c73552bf926
      de6dfa6b
  18. 29 Aug, 2012 1 commit
  19. 28 Aug, 2012 2 commits
  20. 24 Aug, 2012 1 commit
    • Paul Wilkins's avatar
      New Motion Reference Search · 2d60bee1
      Paul Wilkins authored
      Alternative strategy for finding a list of candidate motion
      vectors to use as reference values in mv coding and as
      nearest and near.
      
      Sort by sad in vp8_find_best_ref_mvs() rather than just
      pick the best. Allow 0,0 as a best ref option but not a
      nearest or near unless there are no alternatives.
      
      Encode/Decode verified on at least some clips.
      
      Some commented out experimental and stats code still in place.
      
      Gain over existing code averages about 1% on derf (alll metrics)
      with improvement on all clips. Other test results pending.
      
      The entropy coding of the mode (nearest/near etc) still
      depends upon and requires the old "findnear" code so
      this needs looking at and may provide room for further gains.
      
      Change-Id: I871d7cba1d1c379c4bad9bcccce1fb19c46b8247
      2d60bee1
  21. 21 Aug, 2012 6 commits
  22. 20 Aug, 2012 1 commit
    • Ronald S. Bultje's avatar
      Superblock coding. · 5d4cffb3
      Ronald S. Bultje authored
      This commit adds a pick_sb_mode() function which selects the best 32x32
      superblock coding mode. Then it selects the best per-MB modes, compares
      the two and encodes that in the bitstream.
      
      The bitstream coding is rather simplistic right now. At the SB level,
      we code a bit to indicate whether this block uses SB-coding (32x32
      prediction) or MB-coding (anything else), and then we follow with the
      actual modes. This could and should be modified in the future, but is
      omitted from this commit because it will likely involve reorganizing
      much more code rather than just adding SB coding, so it's better to let
      that be judged on its own merits.
      
      Gains on derf: about even, YT/HD: +0.75%, STD/HD: +1.5%.
      
      Change-Id: Iae313a7cbd8f75b3c66d04a68b991cb096eaaba6
      5d4cffb3
  23. 17 Aug, 2012 1 commit