From c52638cca255737eb060dcdedf5be4414e622e82 Mon Sep 17 00:00:00 2001
From: Muhammad Faiz <mfcc64@gmail.com>
Date: Thu, 16 Mar 2017 12:35:11 +0700
Subject: [PATCH] swresample/swresample: do not use s32p internally by default
when resampling
use fltp when doing s32 -> s32 resampling
because s32p has no simd optimization
benchmark:
old 17.913s
new 7.584s (use fma3)
Reviewed-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
---
libswresample/swresample.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index f2e66005eb0..74c96dce605 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -223,6 +223,8 @@ av_cold int swr_init(struct SwrContext *s){
}else if( av_get_planar_sample_fmt(s-> in_sample_fmt) == AV_SAMPLE_FMT_S32P
&& av_get_planar_sample_fmt(s->out_sample_fmt) == AV_SAMPLE_FMT_S32P
&& !s->rematrix
+ && s->out_sample_rate == s->in_sample_rate
+ && !(s->flags & SWR_FLAG_RESAMPLE)
&& s->engine != SWR_ENGINE_SOXR){
s->int_sample_fmt= AV_SAMPLE_FMT_S32P;
}else if(av_get_bytes_per_sample(s->in_sample_fmt) <= 4){
--
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