1. 26 Mar, 2014 1 commit
    • Ben Avison's avatar
      truehd: add hand-scheduled ARM asm version of ff_mlp_pack_output. · 3b5946bc
      Ben Avison authored
      Profiling results for overall decode and the output_data function in
      particular are as follows:
      
                    Before          After
                    Mean   StdDev   Mean   StdDev  Confidence  Change
      6:2 total     339.6  15.1     329.3  16.0    95.8%       +3.1%  (insignificant)
      6:2 function  24.6   6.0      9.9    3.1     100.0%      +148.5%
      8:2 total     324.5  15.5     323.6  14.3    15.2%       +0.3%  (insignificant)
      8:2 function  20.4   3.9      9.9    3.4     100.0%      +104.7%
      6:6 total     572.8  20.6     539.9  24.2    100.0%      +6.1%
      6:6 function  54.5   5.6      16.0   3.8     100.0%      +240.9%
      8:8 total     741.5  21.2     702.5  18.5    100.0%      +5.6%
      8:8 function  63.9   7.6      18.4   4.8     100.0%      +247.3%
      
      The assembly version has also been tested with a fuzz tester to ensure that
      any combinations of inputs not exercised by my available test streams still
      generate mathematically identical results to the C version.
      Signed-off-by: 's avatarMartin Storsjö <martin@martin.st>
      3b5946bc