1. 02 Oct, 2016 1 commit
    • Debargha Mukherjee's avatar
      Further changes to new-quant tables · 3c42c096
      Debargha Mukherjee authored
      Refactor to streamline the number of profiles needed, in
      preparation for the next steps.
      
      NO change in performance.
      
      Change-Id: I753b89299897857f3c250c316b4cdc4fedcb90e8
      3c42c096
  2. 29 Sep, 2016 2 commits
    • Yaowu Xu's avatar
      more ref_mv changes from aom/master · 4306b6e5
      Yaowu Xu authored
      Change-Id: I9152f898dfacdf3877ed719f193bb1e0dbee0a1a
      4306b6e5
    • Yue Chen's avatar
      Fix unit test failure for RECT_TX + VAR_TX · 49587a77
      Yue Chen authored
      Disable rect_tx because we only support 4x4 Walsh-Hadamard transform
      in lossless mode.
      
      Fixes failure in ./test_libaom --gtest_filter=*Large*ScreencastQ0/1
      Configuration: --enable-experimental --enable-var-tx --enable-rect-tx
       --enable-ref-mv --enable-ext_intra --enable-ext_tx --enable-debug
       --disable-optimizations
      
      Change-Id: Ib6b3494c7dcf7182f1cab9b138388d054851a23d
      49587a77
  3. 16 Sep, 2016 1 commit
  4. 15 Sep, 2016 1 commit
  5. 07 Sep, 2016 2 commits
  6. 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
  7. 05 Sep, 2016 1 commit
    • Debargha Mukherjee's avatar
      Enable rectangular transforms for UV · 2f12340f
      Debargha Mukherjee authored
      Uses an array to map block sizes, y tx sizes, and subsampling
      factors to various transform sizes for UV.
      
      Results improve by 0.1-0.2%
      
      Change-Id: Icb58fd96bc7c01a72cbf1332fe2be4d55a0feedc
      2f12340f
  8. 02 Sep, 2016 2 commits
    • Yaowu Xu's avatar
      Change to use AOM copyright notice · 2ab7ff05
      Yaowu Xu authored
      Change-Id: I2b2b70e756b7eb9611b7b33b7d5f19b3b30e0a50
      2ab7ff05
    • Sarah Parker's avatar
      Add global motion experiment to rdopt · e5299865
      Sarah Parker authored
      This patch completes the global motion experiment
      implementation. It modifies the format of the motion
      parameters to use the mv union to facilitate faster
      copying and checks for parameters equal to 0 that occur
      frequently in rdopt. The rd decisions for the global motion experiment
      have also been added to rdopt.
      Change-Id: Idfb9f0c6d23e538221763881099c5a2a3891f5a9
      e5299865
  9. 01 Sep, 2016 2 commits
  10. 29 Aug, 2016 1 commit
    • Sarah Parker's avatar
      Implement global motion parameter computation · 4dc0f1b1
      Sarah Parker authored
      This computes global motion parameters between 2 frames by
      matching corresponding points using FAST feature and then
      fitting a model using RANSAC.
      
      Change-Id: Ib6664df44090e8cfa4db9f2f9e0556931ccfe5c8
      4dc0f1b1
  11. 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
  12. 24 Aug, 2016 1 commit
  13. 23 Aug, 2016 2 commits
  14. 22 Aug, 2016 2 commits
  15. 19 Aug, 2016 1 commit
    • Wei-ting Lin's avatar
      Insert extra ARFs' in a gf group · 41d5d52d
      Wei-ting Lin authored
      Insert multiple arfs in a gf group to emulate multi-layer backward
      reference frames structure. At maximum, two extra ARF's are inserted
      in a gf group.
      
      It improves the RD performance by 0.317% in Avg in lowres dataset.
      
      Change-Id: I62c32e1b0f25b978484dd113b319bebcd959bf60
      41d5d52d
  16. 12 Aug, 2016 1 commit
  17. 09 Aug, 2016 1 commit
    • Sarah Parker's avatar
      Add interface to compute gm parameters in encodeframe · d616a5ce
      Sarah Parker authored
      This patch just creates the interface for global motion computation
      and calls it from encodeframe. Currently, the function
      compute_global_motion_feature_based is empty and the work to do
      the actual parameter calculation will be added in a future patch.
      
      Change-Id: Ife142742140079e1c1743b66f180aeb2ecea29ae
      d616a5ce
  18. 03 Aug, 2016 1 commit
    • Sarah Parker's avatar
      Adjust gm parameter computation to avoid mismatch · aa810c00
      Sarah Parker authored
      The gm parameters need to have WARPED_PRECISION_BITS precision
      until they are written to the bitstream because functions in
      reconinter use these parameters before they are written to
      the bitstream. Previously, the parameters weren't being converted
      to WARPED_PRECISION_BITS until they were read from the bitstream
      which causes an encode/decode mismatch.
      
      Change-Id: I31e76e9d6f7d24df21af287a72f8c01f1997304d
      aa810c00
  19. 02 Aug, 2016 1 commit
  20. 29 Jul, 2016 1 commit
  21. 21 Jul, 2016 1 commit
  22. 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
  23. 18 Jul, 2016 1 commit
  24. 14 Jul, 2016 1 commit
  25. 13 Jul, 2016 1 commit
    • Geza Lore's avatar
      Optimize and cleanup obmc predictor and rd search. · 4c4f04ac
      Geza Lore authored
      Use vpx_blend_a64_hmask and vpx_blend_a64_vmask to speed up
      computing the obmc predictor. Clean up calc_target_weighted_pred.
      
      Encoder speedup: 1.3%
      Decoder speedup: 6.5%
      
      Change-Id: I0c774fe53d22399e92a10d1daf3af0010d88d2c5
      4c4f04ac
  26. 29 Jun, 2016 1 commit
  27. 28 Jun, 2016 1 commit
    • Geza Lore's avatar
      Remove skip_txfm optimization. · 92922be8
      Geza Lore authored
      Commit 0d6980d7 removed some use
      of the skip_txfm optimization, and the rest are not productive.
      
      The current use of this optimization is only used with --good
      and --cpu-used >= 3, however the overhead of this is higher than the
      speedup it yields.
      
      Removing this, and subsequently simplifying model_rd_for_sb yields
      a net encoder speedup:
      --cpu-used=0    ~1.5% faster
      --cpu-used=3    ~2.0% faster
      
      The code simplification is also significant.
      
      Change-Id: I1dd668c32de15a2e912c59c42379d0f9e1032ff8
      92922be8
  28. 23 Jun, 2016 1 commit
  29. 17 Jun, 2016 2 commits
    • 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
    • Geza Lore's avatar
      Make variance based partitioning compatible with SEG_LVL_SKIP · 169431b8
      Geza Lore authored
      Inter blocks that have SEG_LVL_SKIP active must be at least 8x8 in
      size for bitstream conformance (see read_inter_block_mode_info in
      decodemv.c).
      
      This patch makes the variance based partitioning scheme stop at 8x8
      blocks in inter frames. This satisfies the SEG_LVL_SKIP constraint
      and is more in line with the original implementation of this function
      (before it got extended for 128x128 superblocks).
      
      BUG=webm:1234
      
      Change-Id: I1fdd894569a9c0817713a77daabe4c8b8e1d00c0
      169431b8
  30. 14 Jun, 2016 4 commits