1. 29 Apr, 2014 1 commit
  2. 24 Apr, 2014 1 commit
  3. 11 Apr, 2014 1 commit
  4. 09 Apr, 2014 1 commit
    • Yunqing Wang's avatar
      Use source frame difference to make partition decision · 4e66293f
      Yunqing Wang authored
      Calculate the difference variance between last source frame and
      current source frame. The variance is calculated at 16x16 block
      level. The variances are compared to several thresholds to decide
      final partition sizes.
      
      An adaptive strategy is implemented to decide using
      SOURCE_VAR_BASED_PARTITION or FIXED_PARTITION based on motions
      in the video. The switching test is done once every
      search_type_check_frequency frames.
      
      The selection of source_var_thresh needs to be investigated
      further later.
      
      RTC set Borg test showed 0.424% overall psnr gain, and 0.357%
      ssim gain. For clips with large enough static area, the
      encoding speedup is around 2% to 15%.
      
      Change-Id: Id7d268f1d8cbca7fb8026aa4a53b3c77459dc156
      4e66293f
  5. 21 Mar, 2014 1 commit
    • levytamar82's avatar
      AVX2 SAD Optimization: · 0fa8b668
      levytamar82 authored
      2 functions were optimized for avx2 by using full 256 bit register
      In order to handle 32 elements in parallel instead of only 16 in parallel:
      1. vp9_sad32x32x4d
      2. vp9_sad64x64x4d
      
      The function level gain is 66% and the user level gain is ~1%.
      
      Change-Id: I4efbb3bc7d8bc03b64b6c98f5cd5c4a9dd3212cb
      0fa8b668
  6. 03 Mar, 2014 1 commit
    • James Zern's avatar
      build: convert rtcd.sh to perl · 805078a1
      James Zern authored
      significantly speeds up file generation.
      
      the goal of this change is to convert rtcd.sh to perl as directly as
      possible to allow for simple comparison. future changes can make it more
      perl-like.
      
      ---
      Linux
          [CREATE] vpx_scale_rtcd.h
      real    0m0.485s ->    0m0.022s
          [CREATE] vp8_rtcd.h
      real    0m4.619s ->    0m0.060s
          [CREATE] vp9_rtcd.h
      real    0m10.102s ->    0m0.087s
      
      Windows
          [CREATE] vpx_scale_rtcd.h
      real    0m8.360s ->    0m0.080s
          [CREATE] vp8_rtcd.h
      real    1m8.083s ->    0m0.160s
          [CREATE] vp9_rtcd.h
      real    2m6.489s ->    0m0.233s
      
      Change-Id: Idfb71188206c91237d6a3c3a81dfe00d103f11ee
      805078a1