1. 20 Oct, 2016 1 commit
  2. 19 Oct, 2016 2 commits
    • Thomas Davies's avatar
      Step size and arithmetic coding for delta quantization. · f693610a
      Thomas Davies authored
      Example performance: 1.8% bit rate savings using
      the AQ test mode aq-mode=4 :
      ./aomenc --codec=av1 --ivf --tile-columns=1 --tile-rows=1 \
                       --kf-max-dist=1000 --kf-min-dist=1000 --cpu-used=0 \
                       --passes=1 --threads=1 --lag-in-frames=0 \
                       --end-usage=q --limit=600 --cq-level=42 \
                       --aq-mode=4 --error-resilient=1 out.bits FourPeople_1280x720_60.y4m
      
      Change-Id: Iba01cf2732a57f3c27481ac2a3c8fc37bb9e5533
      f693610a
    • Alex Converse's avatar
      Partition the ans experiment into 'ans' and 'rans' · ec6fb649
      Alex Converse authored
      The (new) ans experiment replaces the bool coder with uABS bools. The
      'rans' experiment adds multisymbol coding.
      
      This matches the setup in aom/master.
      
      Change-Id: Ida8372ccabf1e1e9afc45fe66362cda35a491222
      ec6fb649
  3. 18 Oct, 2016 2 commits
  4. 17 Oct, 2016 4 commits
    • Nathan E. Egge's avatar
      Update partition_cdf per frame. · fba2be69
      Nathan E. Egge authored
      Move computing the partition_cdf tables per symbol to
       computing them only when the probabilities are updated.
      
      Change-Id: I442f9230ba00be7f5d0558d7c38d7324ad009ee8
      fba2be69
    • Nathan E. Egge's avatar
      Update inter_ext_tx_cdf per frame. · 93878c42
      Nathan E. Egge authored
      Move computing the inter_ext_tx_cdf tables per symbol to
       computing them only when the probabilities are updated.
      
      Change-Id: I5e1e62f8eae8f6b2edbbd378beeb786649502c10
      93878c42
    • Nathan E. Egge's avatar
      Update intra_ext_tx_cdf per frame. · 7c5b4c16
      Nathan E. Egge authored
      Move computing the intra_ext_tx_cdf tables per symbol to
       computing them only when the probabilities are updated.
      
      Change-Id: I26d5e419e103093e98a7d896c196176305b50fc9
      7c5b4c16
    • Nathan E. Egge's avatar
      Update switchable_interp_cdf once per frame. · 4947c296
      Nathan E. Egge authored
      Move from computing the switchable_interp_cdf per symbol to
       computing once per frame when the probabilities are adapted.
      
      Change-Id: I6571126239f0327e22bb09ee8bad94114291683e
      4947c296
  5. 14 Oct, 2016 2 commits
    • Nathan E. Egge's avatar
      Use Daala entropy coder to code bits. · 8043cc40
      Nathan E. Egge authored
      When building with --enable-daala_ec, calls to aom_write() and aom_read()
       use the daala entropy coder to write and read bits.
      When the probability is exactly 0.5 (128), then raw bits are used.
      
      ntt-short-1:
      
                MEDIUM (%) HIGH (%)
          PSNR -0.027556  -0.020114
       PSNRHVS -0.027401  -0.020169
          SSIM -0.027587  -0.020151
      FASTSSIM -0.027592  -0.020102
      
      subset1:
      
               RATE (%)  DSNR (dB)
          PSNR 0.03296  -0.00210
       PSNRHVS 0.03537  -0.00281
          SSIM 0.03299  -0.00161
      FASTSSIM 0.03458  -0.00111
      
      Change-Id: I48ad8eb40fc895d62d6e241ea8abc02820d573f7
      8043cc40
    • Urvang Joshi's avatar
      Wrap palette code inside CONFIG_PALETTE flag. · b100db7c
      Urvang Joshi authored
      This flag was already added to aomedia/master, so bringing it back to
      webm/nextgenv2, as part of an effort to get the two codebases in sync.
      
      Change-Id: I2b933a6a160e4210d1411a9e7978149eb8553205
      b100db7c
  6. 13 Oct, 2016 1 commit
    • Yue Chen's avatar
      Renamings for OBMC experiment · cb60b185
      Yue Chen authored
      To get ready for pulling AV1 to nextgenv2
      Replace the experimental flag by MOTION_VAR. Rename major variables.
      
      Change-Id: If6cf4f37b9319c46d8f90df551cc7295d66ca205
      cb60b185
  7. 17 Sep, 2016 1 commit
    • Debargha Mukherjee's avatar
      Enable tile-adaptive restoration · 5cd2ab95
      Debargha Mukherjee authored
      Includes a major refactoring/enhancement to support
      tile-adaptive switchable restoration. The framework can be
      readily extended to add more restoration schemes in the
      future. Also includes various cleanups and fixes.
      
      Specifically the framework allows restoration to be conducted
      on tiles such that each tile can be either left unrestored, or
      use bilateral or wiener filtering.
      
      There is a modest improvemnt in coding efficiency (0.1 - 0.2%).
      
      Further enhancements will be added subsequently to improve coding
      efficiency and complexity.
      
      Change-Id: I5ebedb04785ce1ef6f324abe209e925c2d6cbe8a
      5cd2ab95
  8. 15 Sep, 2016 1 commit
  9. 06 Sep, 2016 1 commit
    • Yue Chen's avatar
      Make RECT_TX(>=8x8) work with VAR_TX · a1e48dcc
      Yue Chen authored
      Bitstream syntax:
      For a rectangular inter block, 'rect_tx' flag is sent to indicate if
      the biggest rect tx is used. If no, continue to decode regular
      recursive tx partition.
      
      Change-Id: I127e35cc619b65acb5e9a0717f399cdcdb73fbf0
      a1e48dcc
  10. 02 Sep, 2016 1 commit
  11. 01 Sep, 2016 2 commits
  12. 26 Aug, 2016 1 commit
    • Geza Lore's avatar
      Use rectangular transforms for >= 8x8 blocks · d21982c8
      Geza Lore authored
      For rectangular blocks between 8x8 and 32x32, we can now code the
      transform size as one bigger than the largest square that fits in
      the block (eg, for 16x8, we can code a transform size of 16x16
      rather than the previous maximum of 8x8), when this oversized
      transform is coded in the bitstream, the codec will use the full
      size rectangular transform for that block (eg 16x8 transform in
      the above example).
      
      Also fixes a scaling bug in 16x8/8x16 transforms.
      
      Change-Id: I62ce75f1b01c46fe2fbc727ce4abef695f4fcd43
      d21982c8
  13. 23 Aug, 2016 1 commit
    • Debargha Mukherjee's avatar
      Missing fixes for rect-tx · 49b85d39
      Debargha Mukherjee authored
      Reintroducing some fixes that were dropped inadvertently in
      course of rebasing.
      
      Change-Id: I5f51160c586010590d4bfd5cf225fb21347b0a40
      49b85d39
  14. 22 Aug, 2016 1 commit
  15. 12 Aug, 2016 1 commit
  16. 19 Jul, 2016 1 commit
    • Sarah Parker's avatar
      Add global motion parameters to compressed header · 5fa46c0b
      Sarah Parker authored
      Currently nothing is implemented to compute GM parameters, this
      just adds the capability to send them in the bitstream if they
      were computed. Still need to implement the reconstruction
      based on the parameters in reconinter.
      
      Change-Id: I72aea3c6a9de9f5a40f96da76c82b54a52781fe2
      5fa46c0b
  17. 17 Jun, 2016 1 commit
    • Zoe Liu's avatar
      Merge bi-predictive frames to EXT_REFS · 5805a14c
      Zoe Liu authored
      This patch removed the experiment of BIDIR_PRED and merged the feature
      into the experiment of EXT_REFS:
      
      (1) Each frame now has up to 6 reference frames, namely
          LAST_FRAME, LAST2_FRAME, LAST3_FRAME, GOLDEN_FRAME, (forward) and
          BWDREF_FRAME, ALTREF_FRAME (backward);
          LAST4_FRAME has been removed;
      (2) First pass still keeps the 8 updates:
          KF_UPDATE, LF_UPDATE, GF_UPDATE, ARF_UPDATE, OVERLAY_UPDATE, and
          BRF_UPDATE, LAST_BIPRED_UPDATE, BI_PRED_UPDATE;
      (3) show_existing_frame==1 is supported in the experiment of EXT_REFS;
      (4) New encoding modes are added for both single-ref and compound cases,
          through the use of the 2 extra forward references (LAST2 & LAST3)
          and the 1 extra backward reference (BWDREF).
      
      RD performance wise, using Overall PSNR: Avg/BDRate
              Bipred only      Prev EXT_REFS    Current EXT_REFS with bipred
      lowres: -3.474/-3.324    -1.748/-1.586    -4.613/-4.387
      derflr: -2.097/-1.353    -1.439/-1.215    -3.120/-2.252
      midres: -2.129/-1.901    -1.345/-1.185    -2.898/-2.636
      
      If in vp10/encoder/firstpass.h, change BFG_INTERVAL from 2 to 3, i.e. to
      use 2 bi-predictive frames than 1, a further improvement may be
      obtained:
                       Current EXT_REFS with bipred
              1 bi-predictive frame    2 bi-predictive frames
      lowres: -4.613/-4.387            -4.675/-4.465
      derflr: -3.120/-2.252            -3.333/-2.516
      midres: -2.898/-2.636            -3.406/-3.095
      
      Change-Id: Ib06fe9ea0a5cfd7418a1d79b978ee9d80bf191cb
      5805a14c
  18. 10 Jun, 2016 1 commit
  19. 24 May, 2016 1 commit
    • Zoe Liu's avatar
      Added an experiment "bidir_pred" for backward prediction · cf5083d4
      Zoe Liu authored
      Major parts have been implemented as follows:
      (1) Added BRF_UPDATE, LASTNRF_UPDATE, and NRF_UPDATE in firstpass.c;
      (2) Added the handling for the scenario of
      "cpi->common.show_existing_frame == 1" at the encoder;
      (3) Added a new reference frame of BWDREF_FRAME;
      (4) Have bwd-ref work with upsampled references.
      
      Note that when the experiment of "ext_refs" turned on, this experiment
      will be turned off automatically currently.
      
      RD performance in Overall PSNR has been improved, compared against the
      VP10 baseline:
      
      lowres: Avg -3.312; BDRate -3.154
      derflr: Avg -1.927; BDRate -1.176
      midres: Avg -2.149; BDRate -2.001
      hdres : Avg -0.567; BDRate -0.588
      
      Change-Id: I4c06ff51cc20194bffbd4d2346e57ba3dcf6b62c
      cf5083d4
  20. 04 May, 2016 1 commit
  21. 19 Apr, 2016 1 commit
  22. 05 Apr, 2016 1 commit
  23. 31 Mar, 2016 1 commit
    • Debargha Mukherjee's avatar
      Fix interpolation values and decouple interintra · 2be211e9
      Debargha Mukherjee authored
      Decouples interintra modes and probability models from regular
      intra modes, to enable creating/optimizing new interintra modes.
      Also, fixes interpolation values for 128x128 interintra and obmc.
      
      Change-Id: I5c2016db49b8f029164e5fe84c6274d4e02ff90e
      2be211e9
  24. 30 Mar, 2016 2 commits
    • hui su's avatar
      Set block size upper bound for Palette mode · cbb8be76
      hui su authored
      Avoid buffer overflow in case of such new experiments as
      128 x 128 superblock size.
      
      Change-Id: Ib775f3925a85fc87227c0ddd9b6a6110a12ef196
      cbb8be76
    • Geza Lore's avatar
      Extend superblock size fo 128x128 pixels. · 552d5cd7
      Geza Lore authored
      If --enable-ext-partition is used at build time, the superblock size
      (sometimes also referred to as coding unit (CU) size) is extended to
      128x128 pixels.
      
      Change-Id: Ie09cec6b7e8d765b7555ff5d80974aab60803f3a
      552d5cd7
  25. 22 Mar, 2016 1 commit
    • Julia Robson's avatar
      Porting ext_partition experiment from nextgen · 5cce322a
      Julia Robson authored
      This has been ported under ext_partition_types because it is due
      to be combined with the coding_unit_size experiment which is
      already being ported under ext_partition
      
      Change-Id: I47af869ae123ddf0aa99160dac644059d14266ee
      5cce322a
  26. 21 Mar, 2016 1 commit
  27. 11 Mar, 2016 1 commit
    • hui su's avatar
      Complete (mostly) migration of palette mode · 78b0bd0a
      hui su authored
      Coding gain on screen_content is 12.2% (was 6.6%).
      
      Some features such as frame-level color buffer, adaptive
      entropy coding, are coming in future patches.
      
      Change-Id: I2658cf5ec0cbb02cff685475759f3b68c9807697
      78b0bd0a
  28. 10 Mar, 2016 1 commit
  29. 09 Mar, 2016 1 commit
  30. 26 Feb, 2016 1 commit
    • Geza Lore's avatar
      Port interintra experiment from nextgen. · 7ded038a
      Geza Lore authored
      The interintra experiment, which combines an inter prediction and an
      inter prediction have been ported from the nextgen branch. The
      experiment is merged into ext_inter, so there is no separate configure
      option to enable it.
      
      Change-Id: I0cc20cefd29e9b77ab7bbbb709abc11512320325
      7ded038a
  31. 20 Feb, 2016 1 commit
  32. 12 Feb, 2016 1 commit
    • Yue Chen's avatar
      Overlapped block motion compensation experiment · d1cad9c3
      Yue Chen authored
      In this experiment, an obmc inter prediction mode is enabled for
      >= 8X8 inter blocks. When the obmc flag is on, the regular block-
      based motion compensation will be refined by using predictors of
      the above and left blocks.
      Fixed some compatibility issues with vp9_highbitdepth, supertx,
      ref_mv, and ext_interp.
      
      Coding gain (%) on derflr/hevcmr/hevchd
      OBMC:
      1.047/1.022/0.708
      OBMC + SUPERTX:
      1.652/1.616/1.137
      SUPERTX:
      0.862/0.779/0.630
      
      Change-Id: I5d8d3c4729c6d3ccb03ec7034563107893103b7f
      d1cad9c3