1. 07 Apr, 2017 1 commit
  2. 05 Apr, 2017 10 commits
  3. 04 Apr, 2017 2 commits
  4. 03 Apr, 2017 5 commits
  5. 31 Mar, 2017 3 commits
  6. 28 Mar, 2017 6 commits
    • hui su's avatar
      Add av1_ prefix to fwd_txfm() · f11fb882
      hui su authored
      Change-Id: Ie18fd2b8a3caf3948748ee353fe41e37f5803ba3
      f11fb882
    • Alex Converse's avatar
      ext_partition_types: Uncopy-paste update_ext_partition_context · ffabff35
      Alex Converse authored
      Change-Id: I8cd35f4697bc5ee90cfcb1fd37042770d6b5a544
      ffabff35
    • Thomas Davies's avatar
      NEW_MULTISYMBOL: Code extra_bits using multi-symbols. · 9b8393fd
      Thomas Davies authored
      Code the extra_bits using up to 5 non-adaptive symbols,
      starting from the LSB. The number of skipped bits is
      truncated to fit into the multi-symbol groups.
      
      Change-Id: I147b5b0c3815bd39c338ee9a4779638ae75d7ab5
      9b8393fd
    • Jingning Han's avatar
      Refactor read_partition() · 5fe79db3
      Jingning Han authored
      Replace multiple calls for partition_cdf with a unified variable
      in ec-multisymbol. This siliences a compiler warning in the
      ec-multisymbol.
      
      Change-Id: I56b07579e89e8fba565c4960d081817c86bc0097
      5fe79db3
    • Jingning Han's avatar
      Explicitly use block size to determine partition info · cd95976b
      Jingning Han authored
      Replace the use of num_4x4_log2 with the actual block size as the
      condition to check if a block is partitionable. This avoids conflict
      issues when multiple experiments are turned on.
      
      Change-Id: I666d52458590a6f88c3995a140d20b0d66d27bfb
      cd95976b
    • Fergus Simpson's avatar
      frame_superres: Add scale to uncompressed header · e7508413
      Fergus Simpson authored
      A bit and a three bit literal have been added to the uncompressed frame
      header for use by the frame superres experiment.
      
      The bit is true if scaling is to be used, and is immediately followed by
      a three bit literal that encodes the scale to use. If the first bit is
      false, scaling is disabled and the scale factor numerator is set to the
      denominator (ie. 1:1 scaling). No literal follows if scaling is
      disabled.
      
      The denominator has been defined as a constant 16. The literal is biased
      by a defined constant of 8 - allowing fractions from 1/2 to 15/16
      scaling in steps of 1/16 when scaling is used. Experimentation will be
      needed to discover which of these are useful.
      
      The bit and literal are immediately after the optional render_width and
      render_height, so that the superres parameters can be written and read
      just after the regular width and height, without interfering with the
      render_size parameters.
      
      This patch also adds an arbitrary write to make the scale 1:1, so as to
      not trigger any scaling until it's ready.
      
      Accompanying encode and decode helper functions are added.
      
      Change-Id: I8caa6247c73f5c7f84ef1fde1e80eb9b20bde0e3
      e7508413
  7. 27 Mar, 2017 2 commits
    • Debargha Mukherjee's avatar
      Adds binary code lib for coding various symbols · 47748b56
      Debargha Mukherjee authored
      Adds a variable length binary code library for
      coding various symbols for typical use in headers.
      
      The main codes implemented are:
      1. Coding a symbol from an n-ary alphabet using a
      quasi-uniform code.
      2. A bilevel code for coding symbols from an n-ary
      alphabet based on a reference value for the symbol
      also taken from the same alphabet.
      The code has two steps. If the symbol is close to
      the reference a shorter code is used, while if it is
      farther away a longer code is used.
      3. A finite (terminated) subexponential code that codes
      a symbol from an n-ary alphabet using subexp parameter k.
      4. A finite (terminated) subexponential code that codes
      a symbol from an n-ary alphabet using subexp parameter k,
      based on a given reference also taken from the same
      alphabet. This code essentially reorders the values
      before using the same code as 3.
      
      Also adds corresponding encoder side functions to count
      the number of bits used.
      
      These codes will be subsequently used for more efficient
      encoding of loop-restoration parameters and global motion
      parameters.
      
      Change-Id: I28c82b611925c1ab17f544c48c4b1287930764b7
      47748b56
    • Alex Converse's avatar
      deltaq: Use block size / mask macros · 68abef8c
      Alex Converse authored
      Fixes unit tests with ext-partition
      
      Change-Id: I17184c7321e27763eea5434f0d4425d928c0abcc
      68abef8c
  8. 25 Mar, 2017 1 commit
    • Jingning Han's avatar
      Fix tree to cdf index mapping · 8e67c05f
      Jingning Han authored
      This fixes the mis-aligned cdf model derived from tree based
      model. It resolves the compression performance regression in
      dual filter, intra mode, inter mode, and transform block type
      coding, when ec-multisymbol is enabled by default.
      
      With dual filter enabled, the performance regression was 3.6%
      loss for lowres. This fix brings the performance gains back to 1%
      gains.
      
      Change-Id: I80f5485386045908c152c9c11eeacbc650f1e324
      8e67c05f
  9. 24 Mar, 2017 3 commits
  10. 23 Mar, 2017 4 commits
  11. 22 Mar, 2017 3 commits
    • Jean-Marc Valin's avatar
      Jointly optimizing deringing and clpf · 5f5c132f
      Jean-Marc Valin authored
      We now signal joint strengths and use a greedy algorithm for the search.
      
      low-latency, cpu-used=4:
      
      ll4-cdef@2017-03-22T03:42:10.815Z -> ll4-cdef-newsearch-var-header-newlambda-refine4@2017-03-22T15:56:46.471Z
      
         PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
      -0.0792 |  0.3551 |  0.4393 |  -0.0108 | -0.1338 | -0.0141 |     0.1452
      
      Change-Id: I619ae1c7c7d7ec04fe993cabc5773b07c3f5b201
      5f5c132f
    • Angie Chiang's avatar
      Add forward probability update for lv_map · 800df032
      Angie Chiang authored
      The feature is implemented in the following two functions.
      av1_write_txb_probs
      av1_read_txb_probs
      
      Change-Id: I0b646e17ec54d7a10a77a6853439217091455af1
      800df032
    • Angie Chiang's avatar
      Update txfm_partition_prob when PVQ is on · 7d7ead9c
      Angie Chiang authored
      Change-Id: I08e4bbbef788079e27410359e5e0b1ad8542f72a
      7d7ead9c