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avfilter/af_afftfilt: remove invalid scaling

This commit is contained in:
Paul B Mahol 2019-07-06 12:01:38 +02:00
parent feade2b403
commit b9a6106842
1 changed files with 2 additions and 7 deletions
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9
libavfilter/af_afftfilt.c
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@ -49,7 +49,6 @@ typedef struct AFFTFiltContext {
AVFrame *buffer;
int eof;
int win_func;
float win_scale;
float *window_func_lut;
} AFFTFiltContext;
@ -138,7 +137,7 @@ static int config_input(AVFilterLink *inlink)
AVFilterContext *ctx = inlink->dst;
AFFTFiltContext *s = ctx->priv;
char *saveptr = NULL;
int ret = 0, ch, i;
int ret = 0, ch;
float overlap;
char *args;
const char *last_expr = "1";
@ -226,10 +225,6 @@ static int config_input(AVFilterLink *inlink)
if (s->overlap == 1)
s->overlap = overlap;
for (s->win_scale = 0, i = 0; i < s->window_size; i++) {
s->win_scale += s->window_func_lut[i] * s->window_func_lut[i];
}
s->hop_size = s->window_size * (1 - s->overlap);
if (s->hop_size <= 0)
return AVERROR(EINVAL);
@ -247,7 +242,7 @@ static int filter_frame(AVFilterLink *inlink)
AVFilterLink *outlink = ctx->outputs[0];
AFFTFiltContext *s = ctx->priv;
const int window_size = s->window_size;
const float f = 1. / s->win_scale;
const float f = 1. / (s->window_size / 2);
double values[VAR_VARS_NB];
AVFrame *out, *in = NULL;
int ch, n, ret, i;