[FFmpeg-devel] [PATCH] avcodec/fft: out of place permutation with av_fft_permute2

[Muhammad Faiz]

remaining patches (2 patches)
i am sorry i dont send them as patchset

thanks
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From 83b82b028232d1bbe91b636a94ad68b6d8026dab Mon Sep 17 00:00:00 2001
From: Muhammad Faiz <mfcc64 at gmail.com>
Date: Tue, 13 Oct 2015 11:59:21 +0700
Subject: [PATCH] avcodec/x86/fft: use default fft_permute

default fft_permute is faster
---
 libavcodec/x86/fft_init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/x86/fft_init.c b/libavcodec/x86/fft_init.c
index 5085f11..6792ba5 100644
--- a/libavcodec/x86/fft_init.c
+++ b/libavcodec/x86/fft_init.c
@@ -44,7 +44,7 @@ av_cold void ff_fft_init_x86(FFTContext *s)
         /* SSE for P3/P4/K8 */
         s->imdct_calc  = ff_imdct_calc_sse;
         s->imdct_half  = ff_imdct_half_sse;
-        s->fft_permute = ff_fft_permute_sse;
+        /* s->fft_permute = ff_fft_permute_sse; */
         s->fft_calc    = ff_fft_calc_sse;
         s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
     }
-- 
1.8.3.1

-------------- next part --------------
From 74a5a19069980d7a400f7c6f7dec30d282f1dee3 Mon Sep 17 00:00:00 2001
From: Muhammad Faiz <mfcc64 at gmail.com>
Date: Tue, 13 Oct 2015 14:59:39 +0700
Subject: [PATCH] avfilter/avf_showcqt: use av_fft_permute2

---
 libavfilter/avf_showcqt.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavfilter/avf_showcqt.c b/libavfilter/avf_showcqt.c
index 5d5fa6c..32856f8 100644
--- a/libavfilter/avf_showcqt.c
+++ b/libavfilter/avf_showcqt.c
@@ -469,8 +469,7 @@ static int plot_cqt(AVFilterLink *inlink)
     int font_height = (FONT_HEIGHT/2) * video_scale;
 
     /* real part contains left samples, imaginary part contains right samples */
-    memcpy(s->fft_result, s->fft_data, fft_len * sizeof(*s->fft_data));
-    av_fft_permute(s->fft_context, s->fft_result);
+    av_fft_permute2(s->fft_context, s->fft_result, s->fft_data);
     av_fft_calc(s->fft_context, s->fft_result);
     s->fft_result[fft_len] = s->fft_result[0];
 
-- 
1.8.3.1