1. 01 Nov, 2016 3 commits
  2. 31 Oct, 2016 5 commits
  3. 30 Oct, 2016 5 commits
    • Deng's avatar
      simp-mv-pred integration with ref-mv · ca8d24d4
      Deng authored
      This commit adds simp-mv-pred experiment. The experiment is to work on
      top of ref-mv experiment to save memory bandwidth and reduce the size
      of line buffer needed in ref-mv experiment.
      
      When compared to ref-mv, this experiment showed:
      low-delay BDR gain: 0.03%
      High-delay BDR gain: 0.01%
      memory/memory bandwidth saving: 40%
      local memory/gate count saving: 20%
      
      Change-Id: Ic4006e041fc58ede411da83d0d730c464ebe1749
      ca8d24d4
    • Jingning Han's avatar
      Fix the top-right reference block location · ea9cf097
      Jingning Han authored
      This commit fixes the top-right reference block location for block
      sizes above 8x8. It improves the coding performance of ref-mv:
      
      lowres 0.08%
      midres 0.15%
      
      Thanks to jiafeng@ for finding this issue.
      
      Change-Id: I70750fc7b18bf0126d3e07abc1b63ca5a160193e
      ea9cf097
    • Angie Chiang's avatar
      Let is_interp_needed always return 1 · a69ce1b3
      Angie Chiang authored
      This CL will cause
      0.122% PSNR drop on lowres dataset
      0.059% PSNR drop on midres dataset
      
      However, it will facilitate hardware implementation.
      
      Change-Id: I0a0713acacbfd571509a721337711c021915dd3c
      a69ce1b3
    • Thomas Davies's avatar
      EC_ADAPT: refactor and fix MinArfFreq unit tests. · 6519bebf
      Thomas Davies authored
      Ensure that cdfs are synced with pdfs after every
      forward update.
      
      Change-Id: I5677f78300156c8622f1728d7a343ff6c3a4ea64
      6519bebf
    • Alex Converse's avatar
      Add ec_multisymbol for common daala_ec and rans code · aca9feba
      Alex Converse authored
      The new ec_multisymbol experiment supersedes the rans experiment and is
      used for multisymbol features that can be backed by either daala_ec or
      rans.
      
      This experiment is automatically enabled by ec_adapt and will try to
      enable daala_ec or ans (in that order).
      
      Change-Id: Ie75b4002b7a9d7f5f7b4d130c1aacb3dbe97e54f
      aca9feba
  4. 29 Oct, 2016 2 commits
    • Thomas's avatar
      Add EC_ADAPT experiment for symbol-adaptive entropy coding. · 9ac5508f
      Thomas authored
      This experiment performs symbol-by-symbol statistics
      adaptation for non-binary symbols. It requires DAALA_EC or
      RANS and ANS to be enabled. The adaptation is currently
      based on a simple recursive filter and is taken from
      Daala. It has an adaptation rate dependent on alphabet size,
      taken from Daala. It applies wherever non-binary symbols
      are encoded using Cumulative Probability Functions rather
      than trees.
      
      Where symbols are adapted, forward updates in the compressed
      header are removed.
      
      In the case of RANS coefficient token values are adapted,
      with the exception of the zero token which remains a
      binary symbol. In the case of DAALA_EC other values
      such as inter and intra modes are adapted as CDFs are
      provided in those cases.
      
      The experiment is configured with:
      
      ./configure --enable-experimental --enable-daala-ec --enable-ec-adapt
      
      or
      
      ./configure --enable-experimental --enable-ans --enable-rans \
          --enable-ec-adapt
      
      EC_ADAPT is not currently compatible with tiles.
      
      BDR results on Objective-1-fast give a small loss:
      
      PSNR YCbCr:      0.51%      0.49%      0.48%
      PSNRHVS:      0.50%
      SSIM:      0.50%
      MSSSIM:      0.51%
      CIEDE2000:      0.50%
      
      Change-Id: I3888718e42616f3fd87144de7f125228446ac984
      9ac5508f
    • Jingning Han's avatar
      Use the actual transform block size for loop filter selection · 9fb1d69e
      Jingning Han authored
      Parse the recursive transform block partition to fetch the actual
      transform size. Use this correct transform size to select the
      corresponding loop filter kernel. This slightly improves the coding
      performance of recursive transform partition for hdres to 0.14%.
      
      Change-Id: Ibe8bc3fdd0d222a4f1fb8156c56a407bec052b9b
      9fb1d69e
  5. 28 Oct, 2016 4 commits
    • Zoe Liu's avatar
      Clean the code in ref frame context decision for ext-refs · 782c9643
      Zoe Liu authored
      For compound mode, it is a sure thing that one of the 2 reference frames
      would be either a forward predictive reference, or a backward predictive
      reference, and the other would provide a different prediction.
      
      Change-Id: I8d7b40525bec4db0f26ba255c8eefa9f20bd52a3
      782c9643
    • Thomas Davies's avatar
      Encode and decode multiple tile groups · 80188d15
      Thomas Davies authored
      This is a manual adaptation of the following commit from aom/master:
      ce12003d
      
      The original commit message:
      
      A tile group is a set of tiles in scan order.
      
      Each tile group has a version of uncompressed and compressed headers,
      identical apart from tile group parameters.
      Encoding probability updates takes account of the number of
      headers to control overheads.
      
      The decoder supports arbitrary numbers of tile groups with
      arbitrary number of tiles. The number of tiles in a TG is
      signalled in the uncompressed header for that TG.
      
      The encoder currently only supports a fixed number
      of TGs (3, when error resilient mode is on) of equal size
      (except possibly for the last one).
      
      The average BDR performnce with 3 tile groups versus
      anchor with error resilient mode and up to 16 tiles is:
      
      NR YCbCr:      3.02%      3.04%      3.05%
      PSNRHVS:      3.09%
      SSIM:      3.06%
      MSSSIM:      3.05%
      CIEDE2000:      3.04%
      
      Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b
      80188d15
    • Urvang Joshi's avatar
      get_palette_color_context: Make code more readable. · 79f4fc47
      Urvang Joshi authored
      For clarity, use separate variables for 'color_ctx_hash' and
      'color_ctx' instead of reusing same variables for both.
      
      BUG=webm:1324
      
      Change-Id: I3a516ea54353e1f0737822c613a68da252e30c6e
      79f4fc47
    • Angie Chiang's avatar
      Pass block pixel width/height into av1_predict_intra_block · 45c198a1
      Angie Chiang authored
      Change-Id: Ia69bceef24b61b0a222783eba79e7a70bb60edd8
      45c198a1
  6. 27 Oct, 2016 5 commits
  7. 26 Oct, 2016 9 commits
  8. 25 Oct, 2016 7 commits