Commit Graph

5 Commits

Author SHA1 Message Date
Ben Avison
b01a2562ae truehd: break out part of output_data into platform-specific callback.
Verified with profiling that this doesn't have a measurable effect upon
overall performance.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-26 20:56:38 +01:00
Ben Avison
3f4e73afe9 truehd: break out part of rematrix_channels into platform-specific callback.
Verified with profiling that this doesn't have a measurable effect upon
overall performance.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-03-26 20:41:48 +01:00
Ben Avison
87b128d5ef truehd: add hand-scheduled ARM asm version of mlp_filter_channel.
Profiling results for overall audio decode and the mlp_filter_channel(_arm)
function in particular are as follows:

              Before          After
              Mean   StdDev   Mean   StdDev  Confidence  Change
6:2 total     380.4  22.0     370.8  17.0    87.4%       +2.6%  (insignificant)
6:2 function  60.7   7.2      36.6   8.1     100.0%      +65.8%
8:2 total     357.0  17.5     343.2  19.0    97.8%       +4.0%  (insignificant)
8:2 function  60.3   8.8      37.3   3.8     100.0%      +61.8%
6:6 total     717.2  23.2     658.4  15.7    100.0%      +8.9%
6:6 function  140.4  12.9     81.5   9.2     100.0%      +72.4%
8:8 total     981.9  16.2     896.2  24.5    100.0%      +9.6%
8:8 function  193.4  15.0     103.3  11.5    100.0%      +87.2%

Experiments with adding preload instructions to this function yielded no
useful benefit, so these have not been included.

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: Michael Niedermayer <michaelni@gmx.at>
2014-03-26 20:22:18 +01:00
Michael Niedermayer
bb35864759 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  mlpdsp: adding missing file
  dsputil: split out mlp dsp function
  sh4: add required #include, fix build
  averror: make error values proper negative values
  build: do not use LIB as variable name
  build: whitespace cosmetics
  build: remove single-use variable THIS_LIB

Conflicts:
	libavutil/error.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-11 15:55:41 +02:00
Luca Barbato
1ec6293086 mlpdsp: adding missing file 2012-10-11 12:34:36 +02:00