[FFmpeg-cvslog] avfilter/vf_fftfilt: cache rdft contexts
Paul B Mahol
git at videolan.org
Mon Sep 4 19:39:11 EEST 2017
ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Mon Sep 4 18:24:00 2017 +0200| [2726b2d7e8dcbd6e66ebb48224b3d85773c8064a] | committer: Paul B Mahol
avfilter/vf_fftfilt: cache rdft contexts
Signed-off-by: Paul B Mahol <onemda at gmail.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2726b2d7e8dcbd6e66ebb48224b3d85773c8064a
---
libavfilter/vf_fftfilt.c | 41 ++++++++++++++++++++++++-----------------
1 file changed, 24 insertions(+), 17 deletions(-)
diff --git a/libavfilter/vf_fftfilt.c b/libavfilter/vf_fftfilt.c
index 8a47ed5be4..38dd50d6ae 100644
--- a/libavfilter/vf_fftfilt.c
+++ b/libavfilter/vf_fftfilt.c
@@ -36,7 +36,10 @@
typedef struct FFTFILTContext {
const AVClass *class;
- RDFTContext *rdft;
+ RDFTContext *hrdft[MAX_PLANES];
+ RDFTContext *vrdft[MAX_PLANES];
+ RDFTContext *ihrdft[MAX_PLANES];
+ RDFTContext *ivrdft[MAX_PLANES];
int rdft_hbits[MAX_PLANES];
int rdft_vbits[MAX_PLANES];
size_t rdft_hlen[MAX_PLANES];
@@ -96,7 +99,6 @@ static void copy_rev (FFTSample *dest, int w, int w2)
static void rdft_horizontal(FFTFILTContext *s, AVFrame *in, int w, int h, int plane)
{
int i, j;
- s->rdft = av_rdft_init(s->rdft_hbits[plane], DFT_R2C);
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++)
@@ -106,16 +108,13 @@ static void rdft_horizontal(FFTFILTContext *s, AVFrame *in, int w, int h, int pl
}
for (i = 0; i < h; i++)
- av_rdft_calc(s->rdft, s->rdft_hdata[plane] + i * s->rdft_hlen[plane]);
-
- av_rdft_end(s->rdft);
+ av_rdft_calc(s->hrdft[plane], s->rdft_hdata[plane] + i * s->rdft_hlen[plane]);
}
/*Vertical pass - RDFT*/
static void rdft_vertical(FFTFILTContext *s, int h, int plane)
{
int i, j;
- s->rdft = av_rdft_init(s->rdft_vbits[plane], DFT_R2C);
for (i = 0; i < s->rdft_hlen[plane]; i++) {
for (j = 0; j < h; j++)
@@ -125,33 +124,29 @@ static void rdft_vertical(FFTFILTContext *s, int h, int plane)
}
for (i = 0; i < s->rdft_hlen[plane]; i++)
- av_rdft_calc(s->rdft, s->rdft_vdata[plane] + i * s->rdft_vlen[plane]);
-
- av_rdft_end(s->rdft);
+ av_rdft_calc(s->vrdft[plane], s->rdft_vdata[plane] + i * s->rdft_vlen[plane]);
}
/*Vertical pass - IRDFT*/
static void irdft_vertical(FFTFILTContext *s, int h, int plane)
{
int i, j;
- s->rdft = av_rdft_init(s->rdft_vbits[plane], IDFT_C2R);
+
for (i = 0; i < s->rdft_hlen[plane]; i++)
- av_rdft_calc(s->rdft, s->rdft_vdata[plane] + i * s->rdft_vlen[plane]);
+ av_rdft_calc(s->ivrdft[plane], s->rdft_vdata[plane] + i * s->rdft_vlen[plane]);
for (i = 0; i < s->rdft_hlen[plane]; i++)
for (j = 0; j < h; j++)
s->rdft_hdata[plane][j * s->rdft_hlen[plane] + i] =
s->rdft_vdata[plane][i * s->rdft_vlen[plane] + j];
-
- av_rdft_end(s->rdft);
}
/*Horizontal pass - IRDFT*/
static void irdft_horizontal(FFTFILTContext *s, AVFrame *out, int w, int h, int plane)
{
int i, j;
- s->rdft = av_rdft_init(s->rdft_hbits[plane], IDFT_C2R);
+
for (i = 0; i < h; i++)
- av_rdft_calc(s->rdft, s->rdft_hdata[plane] + i * s->rdft_hlen[plane]);
+ av_rdft_calc(s->ihrdft[plane], s->rdft_hdata[plane] + i * s->rdft_hlen[plane]);
for (i = 0; i < h; i++)
for (j = 0; j < w; j++)
@@ -159,8 +154,6 @@ static void irdft_horizontal(FFTFILTContext *s, AVFrame *out, int w, int h, int
*s->rdft_hlen[plane] + j] * 4 /
(s->rdft_hlen[plane] *
s->rdft_vlen[plane]), 0, 255);
-
- av_rdft_end(s->rdft);
}
static av_cold int initialize(AVFilterContext *ctx)
@@ -216,12 +209,22 @@ static int config_props(AVFilterLink *inlink)
if (!(s->rdft_hdata[i] = av_malloc_array(h, s->rdft_hlen[i] * sizeof(FFTSample))))
return AVERROR(ENOMEM);
+ if (!(s->hrdft[i] = av_rdft_init(s->rdft_hbits[i], DFT_R2C)))
+ return AVERROR(ENOMEM);
+ if (!(s->ihrdft[i] = av_rdft_init(s->rdft_hbits[i], IDFT_C2R)))
+ return AVERROR(ENOMEM);
+
/* RDFT - Array initialization for Vertical pass*/
for (rdft_vbits = 1; 1 << rdft_vbits < h*10/9; rdft_vbits++);
s->rdft_vbits[i] = rdft_vbits;
s->rdft_vlen[i] = 1 << rdft_vbits;
if (!(s->rdft_vdata[i] = av_malloc_array(s->rdft_hlen[i], s->rdft_vlen[i] * sizeof(FFTSample))))
return AVERROR(ENOMEM);
+
+ if (!(s->vrdft[i] = av_rdft_init(s->rdft_vbits[i], DFT_R2C)))
+ return AVERROR(ENOMEM);
+ if (!(s->ivrdft[i] = av_rdft_init(s->rdft_vbits[i], IDFT_C2R)))
+ return AVERROR(ENOMEM);
}
/*Luminance value - Array initialization*/
@@ -300,6 +303,10 @@ static av_cold void uninit(AVFilterContext *ctx)
av_free(s->rdft_vdata[i]);
av_expr_free(s->weight_expr[i]);
av_free(s->weight[i]);
+ av_rdft_end(s->hrdft[i]);
+ av_rdft_end(s->ihrdft[i]);
+ av_rdft_end(s->vrdft[i]);
+ av_rdft_end(s->ivrdft[i]);
}
}
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