1. 09 May, 2017 3 commits
  2. 08 May, 2017 3 commits
    • Urvang Joshi's avatar
      Add a new experiment SMOOTH_HV. · e6ca8e83
      Urvang Joshi authored
      This experiment extends ALT_INTRA by adding two new modes:
      smooth horizontal and smooth vertical.
      
      Improvement on *intra frames* in BDRate (PSNR):
      ===============================================
      
      AWCY (high latency): -0.46%
      (Also, -1.0% or more on PSNR Cb,Cr and APSNR Cb,Cr).
      
      AWCY (low latency): -0.43%
      (Also, -0.88% to -0.94% on PSNR Cb,Cr and APSNR Cb,Cr).
      
      Google sets:
      lowres: -0.454
      midres: -0.484
      hdres:  -0.525
      
      Improvement on *video overall* in BDRate (PSNR):
      ================================================
      
      AWCY (high latency): -0.15%
      
      Google sets:
      lowres: -0.085
      midres: -0.079
      
      Change-Id: I9f4e7c1b8ded1fe244c72838f336103ccc715d50
      e6ca8e83
    • Urvang Joshi's avatar
      Palette: Special case for 2 unique colors. · 773e3542
      Urvang Joshi authored
      When a block only contains 2 unique colors, there's no need to run
      K-means, as 'lb' and 'ub' can directly be used as the centroids.
      
      Two benefits:
      1. Encoding will be faster for this special case, and
      2. Can potentially avoid sub-optimal/duplicate centroids generation
      (due to integer rounding) when 'ub' and 'lb' values are very close.
      
      Change-Id: Ice04fc8577e3cc8c74f87d623a16ac8de3257cdd
      773e3542
    • Urvang Joshi's avatar
      Palette: Handle case of too few unique centroids. · 5fb95f7d
      Urvang Joshi authored
      Even though number of unique colors in a block may be at least
      PALETTE_MIN_SIZE, sometimes the K-means can generate fewer than
      PALETTE_MIN_SIZE unique centroids due to integer rounding.
      
      This was resulting in "k - PALETTE_MIN_SIZE" being negative and using
      that as an index into palette_y_size_cost array was causing a UBSan
      error.
      
      BUG=aomedia:515
      
      Change-Id: Ia00b4bb2efebbe43d1fec7b619ebb837b1ae961c
      5fb95f7d
  3. 06 May, 2017 1 commit
  4. 05 May, 2017 3 commits
    • hui su's avatar
      Fix a conflict between ext-intra and alt-intra · 9cc10654
      hui su authored
      The angle estimation in ext-intra didn't account for
      alt-intra.
      
      Also use c99 variable declaration style.
      
      BUG=aomedia:444
      
      Change-Id: I001b0278eb8cf560975c873a423de024c10d08b4
      9cc10654
    • Luc Trudeau's avatar
      [CFL] Alpha signaling · f533400a
      Luc Trudeau authored
      Writes and reads alpha to and from the bitstream.
      
      A special case is needed on the encoder side to handle prediction block
      skips. Since whether or not a prediction block is skipped during CfL, a
      rollback is required if the block was skipped and the alpha index was
      not zero. The advantage of this is that no signaling is required when
      the prediction block is skipped as it is assumed tha the alpha index is
      zero.
      
      A encode facade is added to the intra prediction facade as CfL requires
      special encoder side operations.
      
      Change-Id: Ic3b11d0fdbd51389d862112eb09d8785127a6b06
      f533400a
    • Sebastien Alaiwan's avatar
      Merge ref-mv into codebase · e140c508
      Sebastien Alaiwan authored
      Change-Id: I96e386678f6227f3ca735c9be2725cb9795b3296
      e140c508
  5. 04 May, 2017 3 commits
  6. 03 May, 2017 2 commits
  7. 02 May, 2017 4 commits
  8. 01 May, 2017 5 commits
  9. 29 Apr, 2017 1 commit
  10. 28 Apr, 2017 7 commits
  11. 27 Apr, 2017 7 commits
  12. 26 Apr, 2017 1 commit