1. 18 Sep, 2017 9 commits
  2. 16 Sep, 2017 5 commits
    • Hui Su's avatar
      intrabc: consider mode cost in RD selection · 8dc0092f
      Hui Su authored
      Should take the overhead into consideration when intrabc is not
      being used. Did not see much coding gain with this patch though.
      
      Change-Id: Ie997c1a7284159252d5f663171957c044d3e0a03
      8dc0092f
    • Hui Su's avatar
      intrabc: replace prob with cdf · 6c8584f6
      Hui Su authored
      Improves keyframe coding by 0.1% on the screen_content testset.
      
      Change-Id: I5793a67eaae21010ef200038af99ebb9029fc770
      6c8584f6
    • Jingning Han's avatar
      Properly count the rate cost in base range coding · 772dee37
      Jingning Han authored
      Properly count the base range coefficient coding in the rate
      distortion optimization and soft quantization process.
      
      Change-Id: I860001f51c4a9d0021d08b85b8ccdb097121b287
      772dee37
    • Angie Chiang's avatar
      Consider 4 neighbors in try_level_down() · e80957ff
      Angie Chiang authored
      This will let the coding performance drop by 0.1%,
      but it will speed up encoder by 40%
      
      The change is under the flag FAST_OPTIMIZE_TXB
      
      Change-Id: I07dea24e818123e27c4347189aaec59deb42903c
      e80957ff
    • Debargha Mukherjee's avatar
      Add a q index based frame superres mode · 7166f22a
      Debargha Mukherjee authored
      Refactors and adds superres-mode 3 and associated
      paramters --superres-qthresh and --superres-kf-qthresh
      that are used to trigger superres mode when the qindex
      for any frame exceeds the thresholds provided for non-key
      and key-frames respenctively. The superres scale factor
      numerator is progressively reduced from 16 starting from
      that q threshold following a fixed slope.
      
      Change-Id: If1c782993667a6fbaaa01bbde77c4924008c0d28
      7166f22a
  3. 15 Sep, 2017 5 commits
    • Nathan E. Egge's avatar
      Force C implementation of 16-point Daala TX's. · 34e1201a
      Nathan E. Egge authored
      This patch fixes a regression introduced in 1d190950 where the encoder
       was using the 16x16 VP9/AV1 transforms for RDO, but then used the Daala
       transforms for encoding.
      
      subset1:
      
      master-daala_dct16@2017-09-13T12:05:18.013Z ->
        master_daala_dct16_use_c@2017-09-13T13:05:02.252Z
      
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.3654 | -0.7634 | -0.7407 |  -0.4884 | -0.4699 | -0.4945 |    -0.5104
      
      master-no_rect_tx-no_var_tx@2017-09-12T00:23:18.153Z ->
        master_daala_dct16_use_c@2017-09-13T13:05:02.252Z
      
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.0133 |  0.1040 | -0.0440 |  -0.0492 | -0.0151 | -0.0120 |     0.0699
      
      Change-Id: Id1830d0975db4bd0320a47fdf45b4bca20881cfb
      34e1201a
    • Yi Luo's avatar
      Fix a baseline build error · 2e6a9ab9
      Yi Luo authored
      Change-Id: I9b92caa9d65a3b062762c270c89018c8e08eba0f
      2e6a9ab9
    • Luc Trudeau's avatar
      Fix Dead Store in rdopt.c · 1f7c4114
      Luc Trudeau authored
      Change-Id: Iad6a16d3ab819405de037d5100060710e0636176
      1f7c4114
    • Yushin Cho's avatar
      Fix a static analyzer warning · ee810273
      Yushin Cho authored
      Also fix asan warnings.
      
      Change-Id: I21fe3150635540abacb5b1b8928c6470db605035
      ee810273
    • Zoe Liu's avatar
      Add encoder support for multi-layer GF 16 · 8dd1c980
      Zoe Liu authored
      Currently the use of the new multi-layer GF group of 16 is guarded by
      the macro USE_GF16_MULTI_LAYER, which is turned off. Hence this CL
      does not change any of the encoder behavior.
      
      Change-Id: I588cd34e19388337a2ecb0a0cb3f796a37647e24
      8dd1c980
  4. 13 Sep, 2017 5 commits
  5. 12 Sep, 2017 4 commits
  6. 11 Sep, 2017 5 commits
    • Sarah Parker's avatar
      Tokenize and write mrc mask · 99e7daa2
      Sarah Parker authored
      This allows a mask for mrc-tx to be sent in the bitstream for
      inter or intra 32x32 transform blocks. The option to send the mask
      vs build it from the prediction signal is currently controlled with
      a macro. In the future, it is likely the macro will be removed and it
      will be possible for a block to select either method. The mask building
      functions are still placeholders and will be filled in in a followup.
      
      Change-Id: Ie27643ff172cc2b1a9b389fd503fe6bf7c9e21e3
      99e7daa2
    • Jingning Han's avatar
      Use per tile model update for coeff_br coding · e29c9260
      Jingning Han authored
      Change-Id: Ie52d52bc25e3fdfdea877349215431d8edc064a3
      e29c9260
    • Zoe Liu's avatar
      Add support of multi-layer GF group 16 to bit allocation · c3903ff2
      Zoe Liu authored
      Change-Id: I52a7ae7404f15f29a0a0b892884cf0edea619507
      c3903ff2
    • Zoe Liu's avatar
      Define coding parameters for GF group of 16 · 8679f417
      Zoe Liu authored
      Propose the coding structure for GF Group of 16 to use the following
      multi-layer design:
        1st Layer: Frame 0 and Frame 16 (ALTREF)
        2nd Layer: Frame 8 (ALTREF2)
        3rd Layer: Frame 4 and 12 (ALTREF2)
        4th Layer: Frame 2, 6, 10, and 14 (BWDREF)
        5th Layer: Frame 1, 3, 5, 7, 9, 11, 13, and 15
      
      This CL implements the reference frame update for a GF group of 16
      using a look-up table, which is different from the current
      implementation. The motivation behind is to try out various GF group
      coding structures simply through manipulating the look-up table,
      instead of making changes on swapping the reference indexes and
      associated flags throughout the codebase.
      
      Change-Id: I823edae1c26263e0e0642a580685a25e81caa0a9
      8679f417
    • Steinar Midtskogen's avatar
      CDEF: Do not filter chroma if subsampling_x != subsampling_y · 1c1161f1
      Steinar Midtskogen authored
      Since CDEF looks uses the luma direction for chroma, CDEF would have
      to change significantly to support formats like 4:2:2.  The limited
      use of such formats does not justify the complexity to support this,
      so the simple solution is to mandate that the chroma planes aren't
      filtered if subsampling_x != subsampling_y.  Most of the visual gain
      is in luma, anyway.
      
      This also means that the chroma strengths and chroma skip condition
      shall not be sent if subsampling_x != subsampling_y.
      
      BUG=aomedia:720
      
      Change-Id: I35c184a6fe0908ae0fee1e74494b6904fa9a3c82
      1c1161f1
  7. 10 Sep, 2017 4 commits
    • Jingning Han's avatar
      Rework base range entropy coding in level map system · 87b01b5a
      Jingning Han authored
      Replace the truncated geometric distribution model with the grouped
      leaves structure for more efficient probability modeling.
      Each group has its own Geometric distribution
      
      This give us 0.2% gain on lowres
      
      Change-Id: If5c73dd429bd5183a8aa81042f8f56937b1d8a6a
      87b01b5a
    • Debargha Mukherjee's avatar
      Refactoring/simplification of buffers used for sgr · 1330dfd1
      Debargha Mukherjee authored
      Inlcudes miscellaneous cleanups, test fixes, and code reorganization
      for loop-restoration components.
      
      Change-Id: I5b2e6419234d945e6f4344b22636119b50df4054
      1330dfd1
    • Debargha Mukherjee's avatar
      Reduce/Eliminate line buffer for loop-restoration. · e168a783
      Debargha Mukherjee authored
      This patch forces the vertical filtering for the top and bottom
      rows of a processing unit for the Wiener filter to not use border
      more than what is set in the WIENER_BORDER_VERT macro.
      This macro is currently set at 0 to eliminate line buffer completely,
      but it could be increased to 1 or 2 to use limited line buffers
      if the coding efficiency is affected too much with a 0 line-buffer.
      
      Also, for the sgr filter we added the option of using overlapping
      windows horizonttally and vertically to improve coding efficiency.
      The vertical border used is set by the SGRPROJ_BORDER_VERT
      macro, while the horizontal border can be set by the
      SGRPROJ_BORDER_HORZ macro set at 2, the max needed. Currently we do not
      recommend changing SGRPROJ_BORDER_HORZ below 2.
      
      The overall line buffer requirement for LR is twice the max of
      WIENER_BORDER_VERT and SGRPROJ_BORDER_VERT.
      Currently both are set as 0, eliminating line buffers completely.
      
      Also this patch extends borders consistently before CDEF / LR.
      
      Change-Id: Ie58a98c784a0db547627b9cfcf55f018c30e8e79
      e168a783
    • Luc Trudeau's avatar
      Remove useless (void)s · db4ccd42
      Luc Trudeau authored
      Change-Id: I70a4dd8095276eb53050eacca2ee33ba39e7cc74
      db4ccd42
  8. 09 Sep, 2017 3 commits