• Ben Avison's avatar
    truehd: add hand-scheduled ARM asm version of ff_mlp_rematrix_channel. · 89135716
    Ben Avison authored
    Profiling results for overall audio decode and the rematrix_channels function
    in particular are as follows:
    
                  Before          After
                  Mean   StdDev   Mean   StdDev  Confidence  Change
    6:2 total     370.8  17.0     348.8  20.1    99.9%       +6.3%
    6:2 function  46.4   8.4      45.8   6.6     18.0%       +1.2%  (insignificant)
    8:2 total     343.2  19.0     339.1  15.4    54.7%       +1.2%  (insignificant)
    8:2 function  38.9   3.9      40.2   6.9     52.4%       -3.2%  (insignificant)
    6:6 total     658.4  15.7     604.6  20.8    100.0%      +8.9%
    6:6 function  109.0  8.7      59.5   5.4     100.0%      +83.3%
    8:8 total     896.2  24.5     766.4  17.6    100.0%      +16.9%
    8:8 function  223.4  12.8     93.8   5.0     100.0%      +138.3%
    
    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 avatarMichael Niedermayer <michaelni@gmx.at>
    89135716
mlpdsp_armv5te.S 19.2 KB