From 15a29c39d9ef15b0783c04b3228e1c55f6701ee3 Mon Sep 17 00:00:00 2001 From: Ben Avison Date: Thu, 20 Mar 2014 18:58:35 +0000 Subject: truehd: add hand-scheduled ARM asm version of mlp_filter_channel. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- libavcodec/mlpdsp.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'libavcodec/mlpdsp.c') diff --git a/libavcodec/mlpdsp.c b/libavcodec/mlpdsp.c index b96200ef97..151cf8346c 100644 --- a/libavcodec/mlpdsp.c +++ b/libavcodec/mlpdsp.c @@ -60,6 +60,8 @@ static void mlp_filter_channel(int32_t *state, const int32_t *coeff, av_cold void ff_mlpdsp_init(MLPDSPContext *c) { c->mlp_filter_channel = mlp_filter_channel; + if (ARCH_ARM) + ff_mlpdsp_init_arm(c); if (ARCH_X86) ff_mlpdsp_init_x86(c); } -- cgit v1.2.3