1. 18 Feb, 2018 2 commits
  2. 17 Feb, 2018 6 commits
    • Zoe Liu's avatar
      [NORMATIVE] Unify context design for single ref · 3b353474
      Zoe Liu authored
      The CL makes the context design for single reference frame coding the
      same as that for the compound reference frame coding. There are 3
      contexts designed for each of the binary symbols for the single
      reference frame scenario, and the designed contexts simply rely on the
      counts of the references used in the neighboring two blocks.
      Once this CL is merged, the coding of the reference frames, regardless
      of single prediction or compound prediction, will all follow the same
      context design pattern for all the binary symbols. The design logic is
      much simpler and the lines of code for each binary symbol context
      identification are reduced by 80%.
      Further, this CL has obtained a small coding gain for 30 frames with
      the default coding tools:
      lowres: avg_psnr -0.015%; ovr_psnr -0.021%; ssim -0.002%
      midres: avg_psnr -0.108%; ovr_psnr -0.139%; ssim -0.135%
      Change-Id: Ia72a1d18e85ac3a05308675b60b95f80f2219c46
    • Debargha Mukherjee's avatar
      Add a wrapper to 8-bit scaled convolve function · 3ffa0fef
      Debargha Mukherjee authored
      This addesses a crash in a situation where the scaled convolve
      function is called without a valid dst buffer in the conv_params
      Change-Id: Ia4a0a1213f06447155d6c92aa9efc183d8c4a79c
    • Jingning Han's avatar
      Silience compiler warning when ext-partition is off · 84597cca
      Jingning Han authored
      Change-Id: I24e98062fec2cf73e294d34bf02419f7917a9bf0
    • Jingning Han's avatar
      Fix rate estimate when optimize_b is off · 70e0fdea
      Jingning Han authored
      Fix the rate cost count when the optimize_b route is set off in
      the rate-distortion optimization process. Thanks to pohhsu@microsoft
      for finding this issue and pointing the fix.
      Change-Id: I54d9ec8102792a1575fc66bc6be2003e94eeb488
    • Jingning Han's avatar
      [NORMATIVE] Fix top right mv check condition for VERT_A partition · 56066252
      Jingning Han authored
      When a coding block runs VERT_A partition, the coding order does
      not follow raster order. This requires a special handle on the
      bottom left square block to disable its reference towards the
      top-right corner. Prior to this change the codebase would disable
      the bottom-right square, as well as the right rectangular blocks,
      from referencing the top-right mv. This commit fixes such check
      condition to allow the right rectangular block to access the top
      right mv.
      Change-Id: I87049f0cec8ed7557a87c3fdef83e01498bbcd75
    • Jingning Han's avatar
      Remove unused context models for drl_index · 233c7627
      Jingning Han authored
      Remove deprecated context models for drl index coding.
      Change-Id: If255fa93d0c746738f0fc005464388e790c89b63
  3. 16 Feb, 2018 14 commits
  4. 15 Feb, 2018 10 commits
    • Jingning Han's avatar
      Reduce blk_skip array size · ca3f0395
      Jingning Han authored
      Reduce the blk_skip array size to the maximum txb numbers in a
      coding block. This makes the speed 1 about 5% faster for smaller
      resolution clips.
      Change-Id: I1812dc4d403e08f0566ead8a14c6046e505bb849
    • Jingning Han's avatar
      Reduce txb_coeff_cost map size from 64 to 32 · f32f678d
      Jingning Han authored
      The maximum coding block size is 128 and the minimum tx size is
      4. Using 32 per dimension to keep the txb coeff cost should be
      Change-Id: Ie44fc581037f0d8270caec64543454701159eec5
    • Jingning Han's avatar
      Fix compiler errors in cfl.h · 5a338ee4
      Jingning Han authored
      Change-Id: Iadf001ae293ca50b805e8b8c569900f60a23943c
    • David Barker's avatar
      [NORMATIVE-DECODING] Add missing special case to has_top_right() · 3f0f1dfc
      David Barker authored
      Commit ea190906 fixed a major bug in has_top_right(), but missed
      out one special case:
      Consider a 128x128 block using 64x64 intra predictions. These
      intra predictions are applied in a 'Z' order, and so the bottom-left
      64x64 unit has pixels available from the top-right one. But we were
      mistakenly setting has_top_right() = 0 for this case.
      More generally, whichever transform unit has its top-right corner
      at the center of a 128x128 block, should have has_top_right() = 1.
      Fix this by introducing an explicit check for the special case.
      Change-Id: I690a292be6c1755c76bd428be94ab953dd71fbd2
    • Yaowu Xu's avatar
      Remove CONFIG_TX64X64 · d3d4159f
      Yaowu Xu authored
      The experiment is fully adopted.
      Change-Id: I6cc80a2acf0c93c13b0e36e6f4a2378fe5ce33c3
    • Debargha Mukherjee's avatar
      Stop using VP9 convolve scheme in AV1 encoder. · 1fc3df55
      Debargha Mukherjee authored
      Discontinue all VP9 style convolve rounding operations in the non-normative
      parts of the encoder.
      The function av1_convolve_2d_sr_c is forced instead of SIMD versions
      of the same function, because of incompatibility when round_1 > 0.
      setting, results on 15 frames of lowres (cpu-used=1) is -0.019% better.
      Change-Id: I72154bd896357c352c944fb2cd3b25bafafba46a
    • David Barker's avatar
      [NORMATIVE-SYNTAX, intrabc] Disallow intrabc+superres · 218556e2
      David Barker authored
      Superres should not be used together with intrabc, for the same
      reasons why the other loop filters are disabled when intrabc is
      used. However, we actually read superres information first,
      so the simplest change is to only read allow_intrabc if superres is off.
      Change-Id: I55c4c8ace72ab3fac9417da5cf803883be7efb84
    • Yaowu Xu's avatar
      align a stack array to prevent segfault · 1e2084a2
      Yaowu Xu authored
      Change-Id: I8c3de068fd158b4706b578f7609c8ef939364525
    • Luc Trudeau's avatar
      [CFL] SSE2/AVX2 Versions of Sum and Subtract Average · 365f73bb
      Luc Trudeau authored
      Includes unit tests for conformance and speed.
      4x4: C time = 234 us, SIMD time = 152 us (~1.5x)
      8x8: C time = 664 us, SIMD time = 208 us (~3.2x)
      16x16: C time = 1687 us, SIMD time = 581 us (~2.9x)
      32x32: C time = 6118 us, SIMD time = 2119 us (~2.9x)
      4x4: C time = 250 us, SIMD time = 221 us (~1.1x)
      8x8: C time = 683 us, SIMD time = 284 us (~2.4x)
      16x16: C time = 1727 us, SIMD time = 1091 us (~1.6x)
      32x32: C time = 6092 us, SIMD time = 2107 us (~2.9x)
      Change-Id: I44ffedc683829d2c16089854ac43d4ddb4415bcd
    • Angie Chiang's avatar
      Simplify the for loop of reading lower levels · 1b1c4a3c
      Angie Chiang authored
      Move tcoeff reconstruction from the for loop of reading lower
      levels to the loop of reading signs
      This is to facilitate the potential simd optimization of
      reading lower levels
      Change-Id: I61e41ea95d30a948243fb13e3d708dd9860a058a
  5. 14 Feb, 2018 8 commits
    • David Barker's avatar
      [NORMATIVE-DECODING] Fix above/left chroma block selection · d3afdb90
      David Barker authored
      As pointed out by rsbultje, my previous patch to is_smooth()
      (a883e6ea) was not quite correct. This is because, when we're
      making a chroma prediction, the uv_mode for the above/left chroma
      predictions is not necessarily in above_mbmi/left_mbmi. Instead,
      it may be in any of several places, depending on subsampling and
      the values of mi_row/mi_col.
      The cleanest solution is to explicitly maintain pointers to the
      above and left chroma blocks. Then we can simply look at those
      pointers when we want to know the above or left uv_mode.
      Also include a bit of refactoring of get_filt_type: It seems
      to be recalculating what's already in xd->{above,left}_mi,
      so just use those directly.
      Change-Id: I0230474a50d43b78cb587a2b553da9ca78cec0c6
    • Cheng Chen's avatar
      Fix jnt_comp in warp function · 5c4848d6
      Cheng Chen authored
      Fixed a bug in jnt_comp simd function.
      Re-write the function based on existing av1_warp_affine_ssse3.
      The function is almost the same as av1_warp_affine_ssse3, only
      difference is the weighted computation of final value.
      Change-Id: I65f2fadc9142f6c264a7d0e59250602636c9808b
    • Peng Bin's avatar
      Refactor inv_cos_bit for speedup · 28744b5c
      Peng Bin authored
      Replace the last parameter cos_bit for all 1D inv_txfm funcions with
      a macro define, as it is actually always equal to 12. By changing it
      to const value, compiler can do further optimization.
      Change-Id: If8a9fd99c7ac7eb6f485dafbce22b4803efda62e
    • Linfeng Zhang's avatar
      Implement fdct4x8_new_sse2 and fadst4x8_new_sse2 · 043f4964
      Linfeng Zhang authored
      Change-Id: I9ab260c5ca31fe7e06bfc0f806893463c5255c45
    • Linfeng Zhang's avatar
      Implement fdct4x4_new_sse2 · 1fffc1f4
      Linfeng Zhang authored
      Change-Id: I5b905d54f7e551b15dac5f9cfd4e6d96e19d52c3
    • Linfeng Zhang's avatar
      Enable av1_lowbd_fwd_txfm2d_4x8_sse2 · 686c5979
      Linfeng Zhang authored
      Forgot to put it in the function table.
      Change-Id: I86192158f74df84fca6c4a3dbda8b01659f6c9bd
    • Linfeng Zhang's avatar
      Implement av1_lowbd_fwd_txfm2d_8x4_sse2 · 7bd00743
      Linfeng Zhang authored
      So far the implemented av1_lowbd_fwd_#x#_sse2 provides 10% encoder
      speed up on speed 1.
      Change-Id: I3dab438c4498059262b065300743ba1519db64b4
    • Michelle Findlay-Olynyk's avatar
      hash_based_trellis speed feature update · dea531da
      Michelle Findlay-Olynyk authored
      Add speed feature that uses hash tables to
      reuse deltas from previously found optimized
      coefficients in av1_optimize_txb. This skips some
      expensive optimize_txb calls.
      Work stopped (no current benefit):
      Current setup has worse speed (~1%), and is
      turned off by default in speed_features.c.
      Overall PSNR was ~0.1% worse. See
      go/hashBasedTrellis for feature details.
      Requires hash_me.
      Change-Id: Id12ada82984ea6682e2b6f27534fa57f3a3abb4a