From 5eaaffaf64d1854493f0fe9ec822eed1b3cd9fe1 Mon Sep 17 00:00:00 2001 From: Dale Curtis Date: Fri, 17 Nov 2017 14:51:09 -0800 Subject: [PATCH] Use ff_thread_once for fixed, float table init. These tables are static so they should only be initialized once instead of on every call to ff_mpadsp_init(). Signed-off-by: Dale Curtis Signed-off-by: Michael Niedermayer --- libavcodec/mpegaudiodsp.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/libavcodec/mpegaudiodsp.c b/libavcodec/mpegaudiodsp.c index a5d20df629..3cafca27bf 100644 --- a/libavcodec/mpegaudiodsp.c +++ b/libavcodec/mpegaudiodsp.c @@ -20,17 +20,21 @@ #include "config.h" #include "libavutil/attributes.h" +#include "libavutil/thread.h" #include "mpegaudiodsp.h" #include "dct.h" #include "dct32.h" +static AVOnce mpadsp_float_table_init = AV_ONCE_INIT; +static AVOnce mpadsp_fixed_table_init = AV_ONCE_INIT; + av_cold void ff_mpadsp_init(MPADSPContext *s) { DCTContext dct; ff_dct_init(&dct, 5, DCT_II); - ff_init_mpadsp_tabs_float(); - ff_init_mpadsp_tabs_fixed(); + ff_thread_once(&mpadsp_float_table_init, &ff_init_mpadsp_tabs_float); + ff_thread_once(&mpadsp_fixed_table_init, &ff_init_mpadsp_tabs_fixed); s->apply_window_float = ff_mpadsp_apply_window_float; s->apply_window_fixed = ff_mpadsp_apply_window_fixed;