1. 09 Mar, 2016 1 commit
  2. 08 Mar, 2016 1 commit
  3. 07 Mar, 2016 2 commits
    • Yue Chen's avatar
      Calculate the distortion in pixel domain for sub8x8 rd selection · ef8f7c12
      Yue Chen authored
      Pixel domain distortion calculation is enabled for the rd loop of
      inter sub8x8 and intra 4x4 cases.
      
      Coding gain: 0.124% derflr, 0.122% derfhd
      
      Change-Id: I43b47fe81b4f5ccc1c66bc626bd310c413a1ed87
      ef8f7c12
    • Jingning Han's avatar
      Hybrid 1-D/2-D transform coding · a8dc9694
      Jingning Han authored
      This commit enables a hybrid 1-D/2-D transform coding scheme and
      the accompany entropy coding system. It currently uses hybrid
      1-D/2-D DCT transform coding. It provides coding performance gains:
      
      lowres_all  0.55%
      hdres_all   0.43%
      
      Change-Id: I2b30dcafd21eb2bb3371f6e854cbab440a4dfa78
      a8dc9694
  4. 04 Mar, 2016 1 commit
    • Sarah Parker's avatar
      Adding speed feature interface for ext tx search · 2ca7d42e
      Sarah Parker authored
      This sets up the interface for 3 speed features that progressively
      eliminate a greater number of transforms in ext tx using
      pre-trained support vector machines.
      Each speed feature still needs to be implemented.
      
      Change-Id: Ia508aeadc0cffdc080fb227f357a5d1dfbca08e2
      2ca7d42e
  5. 03 Mar, 2016 2 commits
    • Jingning Han's avatar
      Properly restore transform block skip flag in RD search · 7174d637
      Jingning Han authored
      This commit fixes an encoding issue related to var-tx and ref-mv
      experiments that causes the codec to use random values for transform
      block skip flag.
      
      Change-Id: I8daa6d6b88ea45b5bbeb81b43dd0eeff545c8e5a
      7174d637
    • 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
  6. 02 Mar, 2016 1 commit
    • Yi Luo's avatar
      Fixed a computation bug in fdct16_sse2() · 68d6a507
      Yi Luo authored
      fdct16_sse2() was not bit-exact with C reference, fdct16().
      The inconsistency was found by writing a unit test for
      vp10_fht16x16_sse2().  Since the unit test needs a pending
      change on the inherited base class.  I will commit this unit
      test after making a header file for this base class.
      Passed the uncommitted unit test: vp10_fht16x16_test.cc.
      
      Change-Id: If2b617883c633a3ea90c19e1d018240c8007102b
      68d6a507
  7. 01 Mar, 2016 2 commits
    • Yunqing Wang's avatar
      Minor fix in header files · 84f98208
      Yunqing Wang authored
      Move functions to be included in extern "C".
      
      Change-Id: If57fa5eb7955763cf99e6839dde4d7221fad75ea
      84f98208
    • Yaowu Xu's avatar
      Fix an overflow issue for HBD · 5c613ea8
      Yaowu Xu authored
      The sum of squared value of a block can overflow 32bit, this commit
      changes to use int64_t to avoid the overflow issue.
      
      Change-Id: I78fcd6999634f186f86d649cfce85d97a993d040
      5c613ea8
  8. 29 Feb, 2016 2 commits
    • Yunqing Wang's avatar
      Do sub-pixel motion search in up-sampled reference frames · 342a368f
      Yunqing Wang authored
      Up-sampled the reference frames to 8 times in each dimension using
      the 8-tap interpolation filter. In sub-pixel motion search, use the
      up-sampled reference frames to find the best matching blocks. This
      largely improved the motion search precision, and thus, improved
      the compression quality. There was no change in decoder side.
      
      Borg test and speed test results:
      1. On derflr set,
      Overall PSNR gain: 1.306%, and SSIM gain: 1.512%.
      Average speed loss on derf set was 6.0%.
      2. On stdhd set,
      Overall PSNR gain: 0.754%, and SSIM gain: 0.814%.
      On hevchd set,
      Overall PSNR gain: 0.465%, and SSIM gain: 0.527%.
      Speed loss on HD clips was 3.5%.
      
      Change-Id: I300ebaafff57e88914f3dedc8784cb21d316b04f
      342a368f
    • Debargha Mukherjee's avatar
      A build fix and some other cosmetic changes · db084506
      Debargha Mukherjee authored
      Fixes some issues introduced by a merge of two patches.
      Also decouples the temporal interpolation filter from the switchable
      filters for now for ease of experimentation with both separately.
      
      Change-Id: If1c7c08adf00e0cf818fe8d0d3656c26ea65eb32
      db084506
  9. 26 Feb, 2016 3 commits
  10. 25 Feb, 2016 1 commit
    • Jingning Han's avatar
      Use sharp filter for alter reference frame generation · 72eda13e
      Jingning Han authored
      This commit uses 12-tap sharp filter to generate alter reference
      frame. It improves the compression performance by
      derf    0.45%
      hevcmr  0.35%
      stdhd   0.79%
      
      No encoding time change is observed.
      
      Change-Id: Ia5dc26d5aae6b9b0cb782e5a28dc5066eeeb2ec8
      72eda13e
  11. 24 Feb, 2016 3 commits
    • Yi Luo's avatar
      Implemented DST 8x8 with SSE2 intrinsics. · 0353f596
      Yi Luo authored
      Implemented fdst8_sse2() function against C version: fdst8().
      Added seven DST related hybrid transform types in vp10_fht8x8_sse2().
      Replaced vp10_fht8x8_c() with vp10_fht8x8_sse2() in fwd_txfm_8x8().
      Speedup: 18.1%, 11.5%, 22.0% based on speed test from
      city_cif.y4m, garden_sif.y4m, mobile_cif.y4m.
      
      Change-Id: Ia4aa1ea44c7a33e494f64ce843037f8703f975e3
      0353f596
    • Debargha Mukherjee's avatar
      Hooks to use 32x32 masked transforms for ext-tx · da2d4a7a
      Debargha Mukherjee authored
      Adds hooks to use 32x32 ext-tx. Also adds scan orders for the masked
      transforms for 32x32.
      Make macro USE_MSKTX_FOR_32X32 1 in blockd.h to support 32x32 masked
      transforms for ext-tx.
      
      Change-Id: Ie6564830266651fcafae2d536c274dafd664ce17
      da2d4a7a
    • Debargha Mukherjee's avatar
      Adds an utility macro ROUNDZ_POWER_OF_TWO · 389efb28
      Debargha Mukherjee authored
      This macro works for the shift parameter being 0.
      The ROUND_POWER_OF_TWO macro does not.
      
      Change-Id: I8434d2933892e09bbc0d2dafc934d0c3637df347
      389efb28
  12. 23 Feb, 2016 4 commits
  13. 22 Feb, 2016 5 commits
  14. 20 Feb, 2016 2 commits
  15. 19 Feb, 2016 2 commits
  16. 18 Feb, 2016 3 commits
  17. 17 Feb, 2016 5 commits