1. 22 Sep, 2017 1 commit
    • Hui Su's avatar
      Refactor the ext-tx experiment · ddbcde28
      Hui Su authored
      Use common structure for inter and intra tx type information when
      possible.
      
      Change-Id: I1fd3bc86033871ffbcc2b496a31dca00b7d64b31
      ddbcde28
  2. 20 Sep, 2017 3 commits
    • Cheng Chen's avatar
      Search for deblocking filter level for superblock · f572cd30
      Cheng Chen authored
      Search and pick filter level for each superblock after the entire
      frame has been encoded. And then apply loop filtering using
      selected filter levels.
      
      Now it can't work with LOOPFILTER_LEVEL. Y, U, V planes share the
      same filter level.
      
      Per superblock, filter levels are signaled via bitstream.
      
      Future work: move selecting filter level into each superblock
      rather than wait for the whole frame encoded.
      
      Change-Id: I46cb994ec4866abb0456146f7c3cae8813c1d52e
      f572cd30
    • Soo-Chul Han's avatar
      initial implementation of HLS based on R18 · 65c00ae1
      Soo-Chul Han authored
      Change-Id: I78bb38e3d61d74442278bd5ed1c4f695b7c8e24a
      65c00ae1
    • Dominic Symes's avatar
      Add the max-tile tool with uniform tile support · db5d66fe
      Dominic Symes authored
      This adds the tool CONFIG_MAX_TILE
      Uniform tiles are implemented using power of two number of rows or columns.
      Maximum number of rows or columns is 64
      Explicit tiles will follow in a later commit once the command line API is updated for this
      
      Change-Id: Ia8d22e7f4aa779448211496c644937afdf037228
      db5d66fe
  3. 19 Sep, 2017 1 commit
  4. 18 Sep, 2017 1 commit
  5. 16 Sep, 2017 1 commit
    • 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
  6. 15 Sep, 2017 2 commits
    • Yi Luo's avatar
      Fix a baseline build error · 2e6a9ab9
      Yi Luo authored
      Change-Id: I9b92caa9d65a3b062762c270c89018c8e08eba0f
      2e6a9ab9
    • 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
  7. 13 Sep, 2017 2 commits
  8. 11 Sep, 2017 2 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
    • 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
  9. 09 Sep, 2017 1 commit
  10. 08 Sep, 2017 1 commit
    • Hui Su's avatar
      palette-delta-encoding: remove dependency on above SB row · 3748bc2a
      Hui Su authored
      Do not refer to above MB when on SB boundary. This helps to
      reduce line buffer.
      
      Keyframe coding gain on the screen_content testset drops from
      1.28% to 1.20%.
      
      Change-Id: I4b06fd137d6c9ea68d618035381f09d0746ba9e8
      3748bc2a
  11. 07 Sep, 2017 2 commits
  12. 06 Sep, 2017 3 commits
  13. 05 Sep, 2017 1 commit
  14. 04 Sep, 2017 1 commit
  15. 03 Sep, 2017 1 commit
    • Rupert Swarbrick's avatar
      Move loop restoration coefficients to within the frame · 6c545216
      Rupert Swarbrick authored
      Rather than encoding the loop restoration coefficients at the start of
      the frame header, this patch moves them to occur just after certain
      top-level superblocks.
      
      You might hope that we could just encode coefficients on top-level
      superblocks where the top-left corner of the superblock was also the
      top-left corner of the loop restoration tile. Unfortunately, this
      can't work with the superres experiment, where the loop restoration
      tiles don't necessarily line up with the superblocks. Indeed, in
      general there can be multiple different loop restoration coefficients
      that apply in a given top-level superblock. This patch defines a
      function, av1_loop_restoration_corners_in_sb, which yields the
      rectangle [rrow0, rrow1) x [rcol0, rcol1) of loop restoration tiles
      whose top left corners lie in this top-level superblock.
      
      The total file size should be unchanged by this patch: the bits have
      just been moved from the frame header and spread out among the rest of
      the frame.
      
      Change-Id: Icf43b0560964a63dea0d2cd801313f04139188d7
      6c545216
  16. 02 Sep, 2017 1 commit
  17. 01 Sep, 2017 2 commits
    • David Barker's avatar
      Miscellaneous fixes for var-tx · 16c64e33
      David Barker authored
      Lots of small bug fixes, mainly around the transform size coding:
      
      * The loop filter was accidentally using the non-subsampled
        block size for the V plane, due to comparing a plane index
        (0, 1, or 2) against PLANE_TYPE_UV (== 1)
      
      * We allowed an initial update of the transform partition probabilities
        even on frames where we know they will never be used
        (because tx_mode != TX_MODE_SELECT).
        Further, these probabilities would not be reverted at the end
        of the frame, leading to the probability delta persisting across frames.
      
        Change this to behave more like the non-var-tx transform size coding,
        where probability deltas are only coded for frames with
        tx_mode == TX_MODE_SELECT, and the deltas only apply for one frame.
      
      * Fix decoder for the case where the video as a whole isn't lossless,
        and we have tx_mode == TX_MODE_SELECT, but the current segment
        *is* lossless.
        Note that the encoder already does the right thing in this case.
      
      * Don't allow the transform splitting to recurse "below" 4x4.
        This is really just a refactor, but means we can increase the
        maximum depth when subdividing rectangular transforms if we
        want to, whereas the previous code would have needed special cases
        for 4x8 and 8x4 transforms.
      
      * Finally, when we hit the maximum splitting depth, don't update
        the counts as if we had coded a 'no split' symbol.
      
      Change-Id: Iaebdacc9de81d2e93d3c49241e719bbc02e32682
      16c64e33
    • Rupert Swarbrick's avatar
      Encode loop restoration coefficients per tile · 09b5b168
      Rupert Swarbrick authored
      This is a baby-step towards encoding the coefficients at the start of
      superblocks at the top-left of loop restoration tiles. Note that this
      patch causes us to reset "wiener_info" and "sgrproj_info" at each tile
      boundary, which will cause a performance drop.
      
      This is necessary because, in order for tiles to be processed in
      parallel, we cannot delta-encode coefficients across tile boundaries
      if the coefficients are signalled within tiles. We could probably do
      better than the current patch by, say, delta-encoding against previous
      frames.
      
      This patch also fixes up the costing in pickrst.c to match
      
      Change-Id: I5b8b91d63aaf49627cde40219c31c0ac776dfd38
      09b5b168
  18. 31 Aug, 2017 2 commits
    • Stanislav Vitvitskyy's avatar
      Using CDFs for read_partition special case · 8711cf5f
      Stanislav Vitvitskyy authored
      Test results:
      akiyo	    -0.05%
      bowing	    -0.072%
      bridge	    -0.042%
      bus	    -0.156%
      coastguard  -0.645%
      container   -0.087%
      deadline     0.007%
      flower       0.02%
      football    -0.009%
      foreman      0.03%
      hall         0.087%
      highway     -0.041%
      husky       -0.031%
      mad900       0.015%
      mobile      -0.007%
      mother       0.012%
      news         0.039%
      pamphlet     0.061%
      paris       -0.003%
      sign        -0.148%
      silent       0.003%
      students    -0.009%
      tempete     -0.061%
      waterfall    0.666
      
      Change-Id: I96c2fd3a6fbc5f8e5cf7f3b881ef89335e58d5ac
      8711cf5f
    • Jingning Han's avatar
      Add frame index to the decoded frames · c723b348
      Jingning Han authored
      Add frame index to the deocded frames. Store such information to
      the reference frame buffer pool. This design allows each frame
      to know its index in natural order, as well as its reference
      frames positions.
      
      Change-Id: I5bb36928dc5750a4fdcc582dca0d244d6482f400
      c723b348
  19. 28 Aug, 2017 1 commit
  20. 26 Aug, 2017 1 commit
  21. 23 Aug, 2017 1 commit
  22. 22 Aug, 2017 2 commits
  23. 19 Aug, 2017 3 commits
    • Cheng Chen's avatar
      Change experimental flag name · 13fc8194
      Cheng Chen authored
      CONFIG_UV_LVL --> CONFIG_LOOPFILTER_LEVEL
      Change name because the experiment combines filter level search
      in U, V plane, and horizontal, vertical search in Y plane.
      
      Change-Id: Ia05b8f80cd93b60a0305eb94e5783559ef904c13
      13fc8194
    • Cheng Chen's avatar
      Dual deblocking filter strength thresholds · 179479fe
      Cheng Chen authored
      A new experiment for deblocking filter that separates vertical
      and horizontal filter strengths. This experiment is based on the
      assumption that non-flatness characteristics of vertical and
      horizontal direction may differ. Therefore selecting different
      filter strengths for vertical and horizontal can improve deblocking
      performance.
      
      The process of finding proper filter strength:
      1. Search through the filter level under the constraint that
         (vertical == horizontal), and find the best solution.
      2. Fix vertical level as the best solution found in step 1 and vary
         horizontal level to find the best value.
      3. Fix the selected horizontal level, vary vertical level to find
         its best value.
      
      The experiment is working with UV_LVL, sharing the same config flag.
      The searching for horizontal and vertical filter strength only applies
      on Y plane for now.
      
      The experimental flag should be changed to filter_level later.
      
      Change-Id: I164eec8d3ccb3da7ff109c5c55f4b52c1536ddf1
      179479fe
    • Sarah Parker's avatar
      Prevent bitstream from signaling illegal compound types · 680b9b17
      Sarah Parker authored
      Currently nothing forbids wedge from being signalled when
      the block is > 32X32, even though there is no corresponding wedge
      mask for that block size.
      
      BUG=aomedia:640
      BUG=aomedia:636
      
      Change-Id: I538be0229a12b5ef01b2e5a950c9f16ef9a5c51e
      680b9b17
  24. 18 Aug, 2017 1 commit
  25. 15 Aug, 2017 1 commit
    • Debargha Mukherjee's avatar
      Miscellaneous fixes for resize/frame-superres · 17e7b081
      Debargha Mukherjee authored
      1. Fixes logic for disabling global motion w/ resize. Turns off
      conditional write/read of global parameters since it does not
      work currenlty. To be fixed later.
      2. Fixes call for av1_scale_if_required in encoder_frame_with_resize
      function
      3. Remove asserts for the scaled convolve functions
      
      Change-Id: I6a0f18b5ab5cc819bc27ef9fc2f28b0e391643a0
      17e7b081
  26. 14 Aug, 2017 1 commit
  27. 11 Aug, 2017 1 commit
    • Steinar Midtskogen's avatar
      Add experiment CONFIG_CDEF_SINGLEPASS: Make CDEF single pass · 5978212b
      Steinar Midtskogen authored
      Low latency, cpu-used=0:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.3162 | -0.6719 | -0.6535 |   0.0089 | -0.3890 | -0.1515 |    -0.6682
      
      High latency, cpu-used=0:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.0293 | -0.3556 | -0.5505 |   0.0684 | -0.0862 |  0.0513 |    -0.2765
      
      Low latency, cpu-used=4:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.2248 | -0.7764 | -0.6630 |  -0.2109 | -0.3240 | -0.2532 |    -0.6980
      
      High latency, cpu-used=4:
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.1118 | -0.5841 | -0.7406 |  -0.0463 | -0.2442 | -0.1064 |    -0.4187
      
      Change-Id: I9ca8399c8f45489541a66f535fb3d771eb1d59ab
      5978212b