apps/ffmpeg-rockchip
1
0
Fork 0
mirror of https://github.com/nyanmisaka/ffmpeg-rockchip.git synced 2025-10-31 20:42:49 +08:00
Code Issues Packages Projects Releases Wiki Activity

avfilter/avf_showspectrum: fix scaling in zoom mode

Browse Source
This commit is contained in:
Paul B Mahol
2018-10-05 00:15:26 +02:00
parent 196dd13c76
commit d39fae0886
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
libavfilter/avf_showspectrum.c
View File

@@ -340,12 +340,12 @@ static int run_channel_fft(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo
FFTComplex *h = s->fft_scratch[ch];
int L = s->buf_size;
int N = s->win_size;
int M = s->win_size;
int M = s->win_size / 2;
phi = 2.0 * M_PI * (s->stop - s->start) / (double)inlink->sample_rate / (s->win_size - 1);
phi = 2.0 * M_PI * (s->stop - s->start) / (double)inlink->sample_rate / (M - 1);
theta = 2.0 * M_PI * s->start / (double)inlink->sample_rate;
for (int n = 0; n < s->win_size; n++) {
for (int n = 0; n < M; n++) {
h[n].re = cos(n * n / 2.0 * phi);
h[n].im = sin(n * n / 2.0 * phi);
}