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avfilter/af_aiir: fix first delay value

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This commit is contained in:
Paul B Mahol 2020-05-21 10:50:58 +02:00
parent 38490cbeb3
commit 1fc5ddf774
1 changed files with 2 additions and 6 deletions
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8
libavfilter/af_aiir.c
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@ -823,7 +823,7 @@ static void draw_response(AVFilterContext *ctx, AVFrame *out, int sample_rate)
{
AudioIIRContext *s = ctx->priv;
double *mag, *phase, *temp, *delay, min = DBL_MAX, max = -DBL_MAX;
double min_delay, max_delay, min_phase, max_phase;
double min_delay = DBL_MAX, max_delay = -DBL_MAX, min_phase, max_phase;
int prev_ymag = -1, prev_yphase = -1, prev_ydelay = -1;
char text[32];
int ch, i;
@ -869,9 +869,6 @@ static void draw_response(AVFilterContext *ctx, AVFrame *out, int sample_rate)
max_phase = fmax(max_phase, phase[i]);
}
delay[0] = 0.;
min_delay = 0.;
max_delay = 0.;
for (i = 0; i < s->w - 1; i++) {
double div = s->w / (double)sample_rate;
@ -879,8 +876,7 @@ static void draw_response(AVFilterContext *ctx, AVFrame *out, int sample_rate)
min_delay = fmin(min_delay, delay[i + 1]);
max_delay = fmax(max_delay, delay[i + 1]);
}
delay[i] = delay[i - 1];
delay[0] = delay[1];
for (i = 0; i < s->w; i++) {
int ymag = mag[i] / max * (s->h - 1);