1. 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
  2. 02 Sep, 2016 1 commit
  3. 01 Sep, 2016 2 commits
  4. 23 Aug, 2016 1 commit
  5. 22 Aug, 2016 1 commit
  6. 12 Aug, 2016 1 commit
  7. 04 Aug, 2016 1 commit
    • Zoe Liu's avatar
      Code refactoring on Macros related to ref frame numbers · 1af28f02
      Zoe Liu authored
      We have renamed following Macros to avoid name confusion:
      
      REFS_PER_FRAME --> INTER_REFS_PER_FRAME
      (= ALTREF_FRAME - LAST_FRAME + 1)
      MAX_REF_FRAMES --> TOTAL_REFS_PER_FRAME
      (= ALTREF_FRAME - INTRA_FRAME + 1)
      
      INTER_REFS_PER_FRAME specifies the maximum number of reference frames
      that each Inter frame may use.
      TOTAL_REFS_PER_FRAME is equal to INTER_REFS_PER_FRAME + 1, which
      counts the INTRA_FRAME.
      
      Further, at the encoder side, since REF_FRAMES specifies the maximum
      number of the reference frames that the encoder may store, REF_FRAMES
      is usually larger than INTER_REFS_PER_FRAME. For example, in the
      ext-refs experiment, REF_FRAMES == 8, which allows the encoder to
      store maximum 8 reference frames in the buffer, but
      INTER_REFS_PER_FRAME equals to 6, which allows each Inter frame may
      use up to 6 frames out of the 8 buffered frames as its references.
      Hence, in order to explore the possibility to store more reference
      frames in future patches, we modified a couple of array sizes to
      accomodate the case that the number of buffered reference frames is
      not always equal to the number of the references that are being used
      by each Inter frame.
      
      Change-Id: I19e42ef608946cc76ebfd3e965a05f4b9b93a0b3
      1af28f02
  8. 21 Jul, 2016 1 commit
    • Debargha Mukherjee's avatar
      Rectangular transforms 4x8 & 8x4 · e5848dea
      Debargha Mukherjee authored
      Added a new expt rect-tx to be used in conjunction with ext-tx.
      [rect-tx is a temporary config flag and will eventually be
      merged into ext-tx once it works correctly with all other
      experiments].
      
      Added 4x8 and 8x4 tranforms for use initially with rectangular
      sub8x8 y blocks as part of this experiment.
      
      There is about a -0.2% BDRATE improvement on lowres, others pending.
      
      When var-tx is on rectangular transforms are currently not used.
      That will be enabled in a subsequent patch.
      
      Change-Id: Iaf3f88ede2740ffe6a0ffb1ef5fc01a16cd0283a
      e5848dea
  9. 14 Jun, 2016 1 commit
    • Geza Lore's avatar
      Select segment based loopfilter strength for supertx blocks. · 44b91a0e
      Geza Lore authored
      Segment based loopfilter strength for supertx coded blocks is now
      selected based on the minimum of all segment IDs within a supertx
      coded block (same as the quantiser settings).
      
      Change-Id: Ib056bd0d05f6a1d3b512a76deb4e2ad4db0f7dc4
      44b91a0e
  10. 28 Apr, 2016 1 commit
  11. 23 Apr, 2016 1 commit
  12. 07 Apr, 2016 1 commit
    • Geza Lore's avatar
      Make superblock size variable at the frame level. · 454989ff
      Geza Lore authored
      The uncompressed frame header contains a bit to signal whether the
      frame is encoded using 64x64 or 128x128 superblocks. This can vary
      between any 2 frames.
      
      vpxenc gained the --sb-size={64,128,dynamic} option, which allows the
      configuration of the superblock size used (default is dynamic). 64/128
      will force the encoder to always use the specified superblock size.
      Dynamic would enable the encoder to choose the sb size for each
      frame, but this is not implemented yet (dynamic does the same as 128
      for now).
      
      Constraints on tile sizes depend on the superblock size, the following
      is a summary of the current bitstream syntax and semantics:
      
      If both --enable-ext-tile is OFF and --enable-ext-partition is OFF:
           The tile coding in this case is the same as VP9. In particular,
           tiles have a minimum width of 256 pixels and a maximum width of
           4096 pixels. The tile width must be multiples of 64 pixels
           (except for the rightmost tile column). There can be a maximum
           of 64 tile columns and 4 tile rows.
      
      If --enable-ext-tile is OFF and --enable-ext-partition is ON:
           Same constraints as above, except that tile width must be
           multiples of 128 pixels (except for the rightmost tile column).
      
      There is no change in the bitstream syntax used for coding the tile
      configuration if --enable-ext-tile is OFF.
      
      If --enable-ext-tile is ON and --enable-ext-partition is ON:
           This is the new large scale tile coding configuration. The
           minimum/maximum tile width and height are 64/4096 pixels. Tile
           width and height must be multiples of 64 pixels. The uncompressed
           header contains two 6 bit fields that hold the tile width/heigh
           in units of 64 pixels. The maximum number of tile rows/columns
           is only limited by the maximum frame size of 65536x65536 pixels
           that can be coded in the bitstream. This yields a maximum of
           1024x1024 tile rows and columns (of 64x64 tiles in a 65536x65536
           frame).
      
      If both --enable-ext-tile is ON and --enable-ext-partition is ON:
           Same applies as above, except that in the bitstream the 2 fields
           containing the tile width/height are in units of the superblock
           size, and the superblock size itself is also coded in the bitstream.
           If the uncompressed header signals the use of 64x64 superblocks,
           then the tile width/height fields are 6 bits wide and are in units
           of 64 pixels. If the uncompressed header signals the use of 128x128
           superblocks, then the tile width/height fields are 5 bits wide and
           are in units of 128 pixels.
      
      The above is a summary of the bitstream. The user interface to vpxenc
      (and the equivalent encoder API) behaves a follows:
      
      If --enable-ext-tile is OFF:
           No change in the user interface. --tile-columns and --tile-rows
           specify the base 2 logarithm of the desired number of tile columns
           and tile rows. The actual number of tile rows and tile columns,
           and the particular tile width and tile height are computed by the
           codec ensuring all of the above constraints are respected.
      
      If --enable-ext-tile is ON, but --enable-ext-partition is OFF:
           No change in the user interface. --tile-columns and --tile-rows
           specify the WIDTH and HEIGHT of the tiles in unit of 64 pixels.
           The valid values are in the range [1, 64] (which corresponds to
           [64, 4096] pixels in increments of 64.
      
      If both --enable-ext-tile is ON and --enable-ext-partition is ON:
           If --sb-size=64 (default):
               The user interface is the same as in the previous point.
               --tile-columns and --tile-rows specify tile WIDTH and HEIGHT,
               in units of 64 pixels, in the range [1, 64] (which corresponds
               to [64, 4096] pixels in increments of 64).
           If --sb-size=128 or --sb-size=dynamic:
               --tile-columns and --tile-rows specify tile WIDTH and HEIGHT,
               in units of 128 pixels in the range [1, 32] (which corresponds
               to [128, 4096] pixels in increments of 128).
      
      Change-Id: Idc9beee1ad12ff1634e83671985d14c680f9179a
      454989ff
  13. 01 Apr, 2016 1 commit
  14. 31 Mar, 2016 2 commits
    • Geza Lore's avatar
      Refactor loopfilter level arrays to 2D. · 10232eda
      Geza Lore authored
      Change-Id: Id20526d0b6d1371dc9f45cb8b5f24b6974da7bc4
      10232eda
    • Geza Lore's avatar
      Rename MI_BLOCK_SIZE and MI_MASK macros. · 511da8cb
      Geza Lore authored
      Rename MI_BLOCK_SIZE.* -> MAX_MIB_SIZE.* (MIB is for MI Block).
      Rename MI_MASK.* -> MAX_MIB_MASK.*
      
      There are no functional changes.
      
      This is in preparation for coding the superblock size at the frame
      level, which will require some of these constants to become variables.
      The new names better reflect future semantics, and hence make the code
      clearer.
      
      Change-Id: Iee08d97554cf4cc16a5dc166a3ffd1ab91529992
      511da8cb
  15. 30 Mar, 2016 1 commit
    • 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
  16. 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
  17. 18 Mar, 2016 1 commit
  18. 17 Feb, 2016 9 commits
  19. 16 Feb, 2016 2 commits
  20. 29 Jan, 2016 1 commit
  21. 28 Jan, 2016 1 commit
  22. 22 Jan, 2016 1 commit
    • Yue Chen's avatar
      Adding new compound modes to EXT_INTER experiment · 968bbc7b
      Yue Chen authored
      Combinations of different mv modes for two reference frames
      are allowed in compound inter modes. 9 options are enabled,
      including NEAREST_NEARESTMV, NEAREST_NEARMV, NEAR_NEARESTMV,
      NEAREST_NEWMV, NEW_NEARESTMV, NEAR_NEWMV, NEW_NEARMV, ZERO_ZEROMV,
      and NEW_NEWMV.
      This experiment is mostly deported from the nextgen branch.
      It is made compatible with other experiments
      
      Coding gain of EXT_INTER(derflr/hevcmr/hevchd): 0.533%/0.728%/0.639%
      
      Change-Id: Id47e97284e6481b186870afbad33204b7a33dbb0
      968bbc7b
  23. 21 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Loop restoration filter · 84ca7a9f
      Debargha Mukherjee authored
      Current implementation is a bilateral filter whose
      parameters are transmitted in the bitstream.
      
      derflr: -0.647% BDRATE
      hevcmr: -0.794% BDRATE
      
      This is a prelimary patch. Various other variations are to
      be investigated next, that will hopefully be less expensive
      on the decoder side.
      
      Change-Id: I50634ae8f5014ad0bf7432306348908a349d81e1
      84ca7a9f
  24. 15 Jan, 2016 1 commit
    • Yue Chen's avatar
      EXT_INTER experiment · 1ac85879
      Yue Chen authored
      NEW2MV is enabled, representing a new motion vector predicted from
      NEARMV. It is mostly ported from nextgen, where it was named
      NEW_INTER.
      A few fixes are done for sub8x8 RDO to correct some misused
      mv references in the original patch.
      A 'bug-fix' for encoding complexity is done, reducing the additional
      encoding time from 50% to 20%. In sub8x8 case, the old patch
      did motion search for every interpolation filter (vp9 only
      searches once). This fix also slightly improves the coding gain.
      This experiment has been made compatible with REF_MV and EXT_REFS.
      
      Coding gain (derflr/hevcmr/hevchd): 0.267%/0.542%/0.257%
      
      Change-Id: I9a94c5f292e7454492a877f65072e8aedba087d4
      1ac85879
  25. 05 Jan, 2016 1 commit
    • Debargha Mukherjee's avatar
      Super transform - ported from nextgen branch · 3787b174
      Debargha Mukherjee authored
      Various additional changes were made to make the experiment
      compatible with misc_fixes.
      
      derflr: +0.979%
      hevcmr: +0.865%
      
      Speed-wise with --enable-supertx the encoder is only about 10%
      slower than without. Decoding impact is about 30% slowdown.
      
      Note this does not work with ext-tx or var-tx yet. That is
      a TODO.
      
      Change-Id: If25af4241a7a9efbd28f58eda3c4f044c7a7ef4b
      3787b174
  26. 17 Nov, 2015 1 commit
    • hui su's avatar
      Merge MISC_FIXES · 66f2f65e
      hui su authored
      Remove MISC_FIXES flags except for the changes on MV precision, which
      has a 0.1% performance drop.
      
      On derflr, the impact is -0.012%.
      
      Change-Id: I0a74e5a212dd0cb827192a318c92a714c9681e45
      66f2f65e
  27. 09 Nov, 2015 1 commit
    • Johann's avatar
      Release v1.5.0 · cbecf57f
      Johann authored
      Javan Whistling Duck release.
      
      Change-Id: If44c9ca16a8188b68759325fbacc771365cb4af8
      cbecf57f
  28. 30 Oct, 2015 2 commits
    • Jingning Han's avatar
      Make loop filter support recursive transform block partitioning · 94266f4f
      Jingning Han authored
      This commit allows the loop filter to account for the recursive
      transform block partition when selecting the filter and mask.
      
      Change-Id: I62b6c2dcc0497cbe1f264b03c46163f55d2c9752
      94266f4f
    • Jingning Han's avatar
      Refactor loop filter mask · 6727943c
      Jingning Han authored
      This commit refactors the loop filter selection process to support
      variable transform block sizes based filter mask. It disables the
      multi-thread loop filter implementation to simplify the experiments.
      The speed impact on speed 0 encoding is negligible.
      
      Change-Id: Ia470b6da9ad833fe6eb72d2cbeda9296b21910ec
      6727943c