1. 07 Jul, 2017 1 commit
    • Sebastien Alaiwan's avatar
      Encode superframes in front · e4c6fc18
      Sebastien Alaiwan authored
      This moves the superframe index at the beginning of the frame packet.
      There's no change in the superframe index format, and it's still
      optional.
      
      BUG=aomedia:22
      
      Change-Id: I1488429bd114c220ed110be34baee19191ff730e
      e4c6fc18
  2. 15 Jun, 2017 1 commit
  3. 19 May, 2017 1 commit
  4. 24 Apr, 2017 1 commit
    • Luc Trudeau's avatar
      [CFL] Custom block-level DC_PRED · f8164157
      Luc Trudeau authored
      Adds the CfL experiment flag and computes a block-level DC_PRED that is
      required by CfL in order to compute alpha_cb and alpha_cr.
      
      The rate-distorsion impact of computing DC_PRED at the prediction block level
      for chroma planes is rather small
      
      Subset 1:
      master_no_cdef@2017-04-18T20:37:05.712Z
        -> block_DCPRED_no_cdef@2017-04-18T20:38:07.381
        PSNR | PSNR Cb | PSNR Cr | PSNR HVS |   SSIM | MS SSIM | CIEDE 2000
      0.0712 |  0.0337 | -0.1692 |   0.0693 | 0.0814 |  0.0710 |    -0.0063
      Note: CDEF was disabled because of problematic asserts.
      
      Change-Id: I44d1cde8605b108366f4bd4cedbf5159dbbb5880
      f8164157
  5. 21 Apr, 2017 1 commit
  6. 13 Apr, 2017 1 commit
  7. 03 Mar, 2017 1 commit
  8. 20 Jan, 2017 1 commit
  9. 19 Jan, 2017 1 commit
  10. 09 Nov, 2016 1 commit
  11. 08 Nov, 2016 2 commits
    • Yushin Cho's avatar
      Fix the bug that PVQ commit broke dering · 48f84dbd
      Yushin Cho authored
      Since PVQ's max block size equals to the max transform size,
      daala's definition of OD_BSIZE_MAX was changed from 5 down to 4 to
      use AV1's max trasform size 32x32. However, dering also uses
      OD_BSIZE_MAX and assumes its value is 5, which caused dering
      not working.
      
      Change-Id: I9d82bb24adc7d57552a8e0a8a7e798e77d96fd4b
      48f84dbd
    • Yushin Cho's avatar
      Fix the bug that PVQ commit broke dering · 7d208d08
      Yushin Cho authored
      Since PVQ's max block size equals to the max transform size,
      daala's definition of OD_BSIZE_MAX was changed from 5 down to 4 to
      use AV1's max trasform size 32x32. However, dering also uses
      OD_BSIZE_MAX and assumes its value is 5, which caused dering
      not working.
      
      Change-Id: I9d82bb24adc7d57552a8e0a8a7e798e77d96fd4b
      7d208d08
  12. 07 Nov, 2016 1 commit
    • Yushin Cho's avatar
      New experiment: Perceptual Vector Quantization from Daala · 77bba8d3
      Yushin Cho authored
      PVQ replaces the scalar quantizer and coefficient coding with a new
      design originally developed in Daala. It currently depends on the
      Daala entropy coder although it could be adapted to work with another
      entropy coder if needed:
      ./configure --enable-experimental --enable-daala_ec --enable-pvq
      
      The version of PVQ in this commit is adapted from the following
      revision of Daala:
      https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8
      
      More information about PVQ:
      - https://people.xiph.org/~jm/daala/pvq_demo/
      - https://jmvalin.ca/papers/spie_pvq.pdf
      
      The following files are copied as-is from Daala with minimal
      adaptations, therefore we disable clang-format on those files
      to make it easier to synchronize the AV1 and Daala codebases in the future:
       av1/common/generic_code.c
       av1/common/generic_code.h
       av1/common/laplace_tables.c
       av1/common/partition.c
       av1/common/partition.h
       av1/common/pvq.c
       av1/common/pvq.h
       av1/common/state.c
       av1/common/state.h
       av1/common/zigzag.h
       av1/common/zigzag16.c
       av1/common/zigzag32.c
       av1/common/zigzag4.c
       av1/common/zigzag64.c
       av1/common/zigzag8.c
       av1/decoder/decint.h
       av1/decoder/generic_decoder.c
       av1/decoder/laplace_decoder.c
       av1/decoder/pvq_decoder.c
       av1/decoder/pvq_decoder.h
       av1/encoder/daala_compat_enc.c
       av1/encoder/encint.h
       av1/encoder/generic_encoder.c
       av1/encoder/laplace_encoder.c
       av1/encoder/pvq_encoder.c
       av1/encoder/pvq_encoder.h
      
      Known issues:
      - Lossless mode is not supported, '--lossless=1' will give the same result as
      '--end-usage=q --cq-level=1'.
      - High bit depth is not supported by PVQ.
      
      Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e
      77bba8d3
  13. 04 Nov, 2016 1 commit
    • Yushin Cho's avatar
      New experiment: Perceptual Vector Quantization from Daala · 09705fe7
      Yushin Cho authored
      PVQ replaces the scalar quantizer and coefficient coding with a new
      design originally developed in Daala. It currently depends on the
      Daala entropy coder although it could be adapted to work with another
      entropy coder if needed:
      ./configure --enable-experimental --enable-daala_ec --enable-pvq
      
      The version of PVQ in this commit is adapted from the following
      revision of Daala:
      https://github.com/xiph/daala/commit/fb51c1ade6a31b668a0157d89de8f0a4493162a8
      
      More information about PVQ:
      - https://people.xiph.org/~jm/daala/pvq_demo/
      - https://jmvalin.ca/papers/spie_pvq.pdf
      
      The following files are copied as-is from Daala with minimal
      adaptations, therefore we disable clang-format on those files
      to make it easier to synchronize the AV1 and Daala codebases in the future:
       av1/common/generic_code.c
       av1/common/generic_code.h
       av1/common/laplace_tables.c
       av1/common/partition.c
       av1/common/partition.h
       av1/common/pvq.c
       av1/common/pvq.h
       av1/common/state.c
       av1/common/state.h
       av1/common/zigzag.h
       av1/common/zigzag16.c
       av1/common/zigzag32.c
       av1/common/zigzag4.c
       av1/common/zigzag64.c
       av1/common/zigzag8.c
       av1/decoder/decint.h
       av1/decoder/generic_decoder.c
       av1/decoder/laplace_decoder.c
       av1/decoder/pvq_decoder.c
       av1/decoder/pvq_decoder.h
       av1/encoder/daala_compat_enc.c
       av1/encoder/encint.h
       av1/encoder/generic_encoder.c
       av1/encoder/laplace_encoder.c
       av1/encoder/pvq_encoder.c
       av1/encoder/pvq_encoder.h
      
      Known issues:
      - Lossless mode is not supported, '--lossless=1' will give the same result as
      '--end-usage=q --cq-level=1'.
      - High bit depth is not supported by PVQ.
      
      Change-Id: I1ae0d6517b87f4c1ccea944b2e12dc906979f25e
      09705fe7
  14. 28 Oct, 2016 1 commit
    • Thomas Davies's avatar
      Encode and decode multiple tile groups · 80188d15
      Thomas Davies authored
      This is a manual adaptation of the following commit from aom/master:
      ce12003d
      
      The original commit message:
      
      A tile group is a set of tiles in scan order.
      
      Each tile group has a version of uncompressed and compressed headers,
      identical apart from tile group parameters.
      Encoding probability updates takes account of the number of
      headers to control overheads.
      
      The decoder supports arbitrary numbers of tile groups with
      arbitrary number of tiles. The number of tiles in a TG is
      signalled in the uncompressed header for that TG.
      
      The encoder currently only supports a fixed number
      of TGs (3, when error resilient mode is on) of equal size
      (except possibly for the last one).
      
      The average BDR performnce with 3 tile groups versus
      anchor with error resilient mode and up to 16 tiles is:
      
      NR YCbCr:      3.02%      3.04%      3.05%
      PSNRHVS:      3.09%
      SSIM:      3.06%
      MSSSIM:      3.05%
      CIEDE2000:      3.04%
      
      Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b
      80188d15
  15. 21 Oct, 2016 1 commit
    • Nathan E. Egge's avatar
      Add a runtime flag to enable bit accounting. · eb64fc28
      Nathan E. Egge authored
      By default, when building with --enable-accounting the bit accounting
       code will collect statistics for every frame while decoding.
      Collecting statistics can slow down decode time and we would eventually
       like to enable the CONFIG_ACCOUNTING flag by default.
      This patch adds a runtime flag so that bit accounting statistics are
       only collected when actually needed.
      
      Change-Id: I25d9eaf26ea132d61ace95b952872158c9ac29e7
      eb64fc28
  16. 19 Oct, 2016 1 commit
    • Michael Bebenita's avatar
      Bit accounting. · 6048d052
      Michael Bebenita authored
      This patch adds bit account infrastructure to the bit reader API.
      When configured with --enable-accounting, every bit reader API
      function records the number of bits necessary to decoding a symbol.
      Accounting symbol entries are collected in global accounting data
      structure, that can be used to understand exactly where bits are
      spent (http://aomanalyzer.org). The data structure is cleared and
      reused each frame to reduce memory usage. When configured without
      --enable-accounting, bit accounting does not incur any runtime
      overhead.
      
      All aom_read_xxx functions now have an additional string parameter
      that specifies the symbol name. By default, the ACCT_STR macro is
      used (which expands to __func__). For more precise accounting,
      these should be replaced with more descriptive names.
      
      Change-Id: Ia2e1343cb842c9391b12b77272587dfbe307a56d
      6048d052
  17. 14 Oct, 2016 1 commit
    • 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
  18. 10 Oct, 2016 1 commit
    • Nathan E. Egge's avatar
      Add a runtime flag to enable bit accounting. · 9719e2d6
      Nathan E. Egge authored
      By default, when building with --enable-accounting the bit accounting
       code will collect statistics for every frame while decoding.
      Collecting statistics can slow down decode time and we would eventually
       like to enable the CONFIG_ACCOUNTING flag by default.
      This patch adds a runtime flag so that bit accounting statistics are
       only collected when actually needed.
      
      Change-Id: I25d9eaf26ea132d61ace95b952872158c9ac29e7
      9719e2d6
  19. 26 Sep, 2016 1 commit
  20. 23 Sep, 2016 1 commit
    • Thomas Davies's avatar
      Encode and decode multiple tile groups. · ce12003d
      Thomas Davies authored
      A tile group is a set of tiles in scan order.
      
      Each tile group has a version of uncompressed and compressed headers,
      identical apart from tile group parameters.
      Encoding probability updates takes account of the number of
      headers to control overheads.
      
      The decoder supports arbitrary numbers of tile groups with
      arbitrary number of tiles. The number of tiles in a TG is
      signalled in the uncompressed header for that TG.
      
      The encoder currently only supports a fixed number
      of TGs (3, when error resilient mode is on) of equal size
      (except possibly for the last one).
      
      The average BDR performnce with 3 tile groups versus
      anchor with error resilient mode and up to 16 tiles is:
      
      NR YCbCr:      3.02%      3.04%      3.05%
      PSNRHVS:      3.09%
      SSIM:      3.06%
      MSSSIM:      3.05%
      CIEDE2000:      3.04%
      
      Change-Id: I9b97c5ed733103b9160a3a5d4370de5322c00c0b
      ce12003d
  21. 07 Sep, 2016 1 commit
    • Michael Bebenita's avatar
      Bit accounting. · e6b12944
      Michael Bebenita authored
      This patch adds bit account infrastructure to the bit reader API.
      When configured with --enable-accounting, every bit reader API
      function records the number of bits necessary to decoding a symbol.
      Accounting symbol entries are collected in global accounting data
      structure, that can be used to understand exactly where bits are
      spent (http://aomanalyzer.org). The data structure is cleared and
      reused each frame to reduce memory usage. When configured without
      --enable-accounting, bit accounting does not incur any runtime
      overhead.
      
      All aom_read_xxx functions now have an additional string parameter
      that specifies the symbol name. By default, the ACCT_STR macro is
      used (which expands to __func__). For more precise accounting,
      these should be replaced with more descriptive names.
      
      Change-Id: Ia2e1343cb842c9391b12b77272587dfbe307a56d
      e6b12944
  22. 02 Sep, 2016 1 commit
  23. 01 Sep, 2016 2 commits
  24. 12 Aug, 2016 1 commit
  25. 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
  26. 02 Aug, 2016 2 commits
  27. 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
  28. 28 May, 2016 1 commit
    • Zoe Liu's avatar
      Make the bi-predictive frame group interval adjustable · e89ca180
      Zoe Liu authored
      This is for the bidir-pred experiment. Previously the length of the
      bi-predictive frame group interval is fixed at 2, i.e. one
      bi-predictive frame may be inserted every other frame. This patch
      makes the length adjustable, i.e. any positive number may be
      specified, but the use of the backward ref will be turned off if the
      bi-predictive frame group interval is larger than the golden frame
      group.
      
      Further, an additional rate factor level has been added:
      INTER_LOW
      , which applies to LAST_BIPRED_UPDATE frames that are not used as
      references.
      
      Change-Id: I5514d34a64dd486bbb5756c2d0612946f598a789
      e89ca180
  29. 24 May, 2016 1 commit
    • Zoe Liu's avatar
      Fix --test-decode=warn to test mismatch · a63147ae
      Zoe Liu authored
      This patch always compares the most recent show frames between
      the encoder and the decoder to test the mismatch.
      
      Change-Id: I68a91ad0996a598231450debfd616e24992419b5
      a63147ae
  30. 03 May, 2016 1 commit
    • Geza Lore's avatar
      Compute end of frame data precisely with ext-tile. · cba70d29
      Geza Lore authored
      Decoding superframes correctly requires computing the end of the
      frame contents in the bitstream precisely. This patch enables
      ext-tile to do so.
      
      Also extended superframe_test to test with multiple tiles if using
      ext-tile.
      
      Change-Id: I04bb8cde8755a3d764ee3c36aa8b7a6c5c9db742
      cba70d29
  31. 01 Apr, 2016 1 commit
    • Alex Converse's avatar
      ANS experiment: Use ANS everywhere. · fb9186d6
      Alex Converse authored
      Use ANS for all entropy coded data in VP10 including the compressed header and
      modes and motion vectors. ANS tokens continue to be used for DCT tokens.
      
      Change-Id: Idf709a747150601e4d95d81ecfb3dc7253d349df
      fb9186d6
  32. 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
  33. 24 Mar, 2016 1 commit
    • Geza Lore's avatar
      Port large scale tile coding features from nextgen. · 490ba1ad
      Geza Lore authored
      If configured with --enable-ext-tile, the codec uses an alternative
      tile coding syntax in the bitstream. Changes include::
       - The maximum number of tile rows and columns is extended to 1024
         each.
       - The minimum tile width/height is 64 pixels (1 superblock).
       - A tile copy mode is added where a tile directly reuse the coded
         data of a previous tile
       - The meaning of the tile-columns and tile-rows codec parameters are
         overloaded to mean tile-width and tile-height in units of 64
         pixels.
       - All tiles should now be independent, including rows within the
         same columns, so large scale parallel, or independent decoding is
         possible.
       - vpxdec also gained the options to decode only a particular tile,
         tile row, or tile column.
      
      Changes without --enable-ext-tile:
       - All tiles should now be independent, including rows within the
         same columns, so large scale parallel, or independent decoding is
         possible.
       - vpxenc default tile configuration changed to use 1 tile column.
      
      Change-Id: I0cd08ad550967ac18622dae5e98ad23d581cb33e
      490ba1ad
  34. 22 Mar, 2016 2 commits
    • Yaowu Xu's avatar
      vp10/ -> av1/ · cfea7dd7
      Yaowu Xu authored
      Change-Id: Ia055d03656ad1580447eced8687949583fdf4089
      cfea7dd7
    • Yaowu Xu's avatar
      Rename vpx to aom · bf4202ed
      Yaowu Xu authored
      Change-Id: Ibc7933fba85feeb30ef9b14b302d932aff19f54e
      bf4202ed
  35. 03 Mar, 2016 1 commit
    • Alex Converse's avatar
      ANS: Switch from PDFs to CDFs. · 6bbbe316
      Alex Converse authored
      Make the RANS implementation operate on cumulative distribution
      functions rather than individual probability distribution functions.
      CDFs have shown themselves more flexible to work with.
      
      Reduces decoding memory usage from scaling O(num_distributions *
      symbol_resolution) to O(num_distributions).
      
      No bitstream change. This is an purely implementation change.
      
      Change-Id: I4e18d3a0a3d37a36a61487c3d778f9d088b0b374
      6bbbe316
  36. 28 Jan, 2016 1 commit