1. 18 Feb, 2016 1 commit
  2. 05 Jan, 2016 1 commit
    • Ganesh Ajjanagadde's avatar
      lavc/pcm_tablegen: slight speedup of table generation · 43624a66
      Ganesh Ajjanagadde authored
      This gets rid of some branches to speed up table generation slightly
      (impact higher on mulaw than alaw). Tables are identical to before,
      tested with FATE.
      
      Sample benchmark (Haswell, GNU/Linux+gcc):
      old:
       313494 decicycles in build_alaw_table,    4094 runs,      2 skips
       315959 decicycles in build_alaw_table,    8190 runs,      2 skips
      
       323599 decicycles in build_ulaw_table,    4095 runs,      1 skips
       318849 decicycles in build_ulaw_table,    8188 runs,      4 skips
      
      new:
       261902 decicycles in build_alaw_table,    4096 runs,      0 skips
       266519 decicycles in build_alaw_table,    8192 runs,      0 skips
      
       209657 decicycles in build_ulaw_table,    4096 runs,      0 skips
       232656 decicycles in build_ulaw_table,    8192 runs,      0 skips
      Reviewed-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
      Signed-off-by: 's avatarGanesh Ajjanagadde <gajjanagadde@gmail.com>
      43624a66
  3. 21 May, 2011 1 commit
  4. 19 Mar, 2011 1 commit
  5. 26 Jun, 2010 1 commit
  6. 01 Apr, 2010 1 commit