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| author | Ben Avison <bavison@riscosopen.org> | 2014-03-20 18:58:35 +0000 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2014-03-26 19:53:52 +0200 |
| commit | 15a29c39d9ef15b0783c04b3228e1c55f6701ee3 (patch) | |
| tree | 6ace9df03c34b3d4eaa4147a0facd3fd9fe225b1 /libavcodec/mlpdsp.h | |
| parent | efc7290eb668ce77ef28d0ab9958024d0a35fbe8 (diff) | |
| download | ffmpeg-15a29c39d9ef15b0783c04b3228e1c55f6701ee3.tar.gz | |
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: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavcodec/mlpdsp.h')
| -rw-r--r-- | libavcodec/mlpdsp.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/mlpdsp.h b/libavcodec/mlpdsp.h index 995f72a00b..c985a1730a 100644 --- a/libavcodec/mlpdsp.h +++ b/libavcodec/mlpdsp.h @@ -32,6 +32,7 @@ typedef struct MLPDSPContext { } MLPDSPContext; void ff_mlpdsp_init(MLPDSPContext *c); +void ff_mlpdsp_init_arm(MLPDSPContext *c); void ff_mlpdsp_init_x86(MLPDSPContext *c); #endif /* AVCODEC_MLPDSP_H */ |