1. 05 Mar, 2015 2 commits
  2. 06 Feb, 2015 1 commit
  3. 17 Jan, 2015 1 commit
    • Yunqing Wang's avatar
      vp9_ethread: add parallel loopfilter · e76eaf05
      Yunqing Wang authored
      1. Added row-based loopfilter in encoder;
      2. Moved common multi-threaded loopfilter functions from decoder
         to common;
      3. Merged multi-threaded loopfilter code, and made encoder/
         decoder call same function to reduce code duplication.
      
      Encoder tests showed that 1% - 2% speedup was seen for good-quality
      2-pass mode(at speed 3); 1% - 3% speedup using 2 threads and 4% - 6%
      speedup using 4 threads were seen for real-time mode(at speed 7).
      
      Change-Id: I8a4ac51c2ad9bab9fa7b864e90743931c53ec1c4
      e76eaf05
  4. 14 Jan, 2015 1 commit
    • Yunqing Wang's avatar
      Align thread data in vp9_ethread · 99b99831
      Yunqing Wang authored
      On some platforms, such as 32bit Windows and 32bit Mac, the allocated
      memory isn't aligned automatically. The thread data is aligned to
      ensure the correct access in SIMD code.
      
      Change-Id: I1108c145fe982ddbd3d9324952758297120e4806
      99b99831
  5. 04 Dec, 2014 1 commit
    • Yunqing Wang's avatar
      vp9_ethread: the tile-based multi-threaded encoder · eba9c762
      Yunqing Wang authored
      Currently, VP9 supports column-tile encoding, which allows a frame
      to be encoded in multiple column tiles independently. The number of
      column tiles are set by encoder option "--tile-columns". This
      provides a way to encode a frame in parallel.
      
      Based on previous set of patches, this patch implemented the tile-
      based multi-threaded encoder. Each thread processes one or more
      tiles.
      
      Usage:
      For HD clips:
      --tile-columns=2 --threads=1/2/3/4
      
      While using 4 threads, tests showed that the encoder achieved
      2.3X - 2.5X speedup at good-quality speed 3, and 2X speedup at
      realtime speed 5.
      
      Change-Id: Ied987f8f2618b1283a8643ad255e88341733c9d4
      eba9c762