1. 08 Jan, 2014 1 commit
    • levytamar82's avatar
      AVX2 Variance Optimization · 357b6536
      levytamar82 authored
      Optimizing the variance functions: vp9_variance16x16, vp9_variance32x32,
      vp9_variance64x64, vp9_variance32x16, vp9_variance64x32,
      vp9_mse16x16 by migrating to AVX2
      some of the functions were optimized by processing 32 elements instead of 16.
      some of the functions were optimized by processing 2 loop strides of 16
      elements in a single 256 bit register
      This optimization gives between 2.4% - 2.7% user level performance gain
      and 42% function level gain.
      
      Change-Id: I265ae08a2b0196057a224a86450153ef3aebd85d
      357b6536
  2. 27 Dec, 2013 5 commits
    • Jingning Han's avatar
      cdc933ca
    • Dmitry Kovalev's avatar
    • Yunqing Wang's avatar
      Merge "Remove a unused sub-pixel search" · a7248a04
      Yunqing Wang authored
      a7248a04
    • Dmitry Kovalev's avatar
      Removing vpx_codec_vp9x_cx and internal experimental flag. · 116e0a1a
      Dmitry Kovalev authored
      vpx_codec_vp9x_cx is not used internally. Experimental flag from
      vp9_extracfg is also not really used. YUV 4:4:4 just works after these
      changes (you have to specify --profile=1 for the encoder).
      
      Change-Id: Ib1c8461d0d19d159827e005efe868f891eea0140
      116e0a1a
    • Jingning Han's avatar
      Adaptive motion control on ref and search range · a4ce53f1
      Jingning Han authored
      This commit takes a preliminary attempt to refine the motion search
      control. It detects the SAD associated with mv predictor per reference
      frame, and based on which to determine whether the encoder wants to
      reduce the motion search range (if the predicted mv provides fairly
      small SAD), or to skip the current reference frame (if there exists
      another ref frame that gives much smaller SAD cost).
      
      This feature is turned on in the settings of speed 1 and above.
      
      In speed 1, compression performance changed
      derf  -0.018%
      yt    -0.043%
      hd    -0.045%
      stdhd -0.281%
      
      speed-up
      pedestrian_area_1080p at 4000 kbps 100 frames
      199651ms -> 188846ms (5.5% speed-up)
      blue_sky_1080p at 6000 kbps
      443531ms -> 415239ms (6.3% speed-up)
      
      In speed 2, compression performance changed
      derf  -0.026%
      yt    -0.090%
      hd    -0.055%
      stdhd -0.210%
      
      speed-up
      pedstrian 113949ms -> 108855ms (4.5% speed-up)
      blue_sky  271057ms -> 257322ms (5% speed-up)
      
      Change-Id: I1b74ea28278c94fea329d971d706d573983d810d
      a4ce53f1
  3. 26 Dec, 2013 2 commits
  4. 20 Dec, 2013 16 commits
  5. 19 Dec, 2013 16 commits