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avfilter/af_afftfilt: calculate all channels FFT values upfront

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This commit is contained in:
Paul B Mahol 2018-11-12 09:27:08 +01:00
parent ee47ac97d7
commit a09411a0ee
1 changed files with 8 additions and 5 deletions
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13
libavfilter/af_afftfilt.c
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@ -289,14 +289,17 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
for (ch = 0; ch < inlink->channels; ch++) {
FFTComplex *fft_data = s->fft_data[ch];
FFTComplex *fft_temp = s->fft_temp[ch];
float *buf = (float *)s->buffer->extended_data[ch];
int x;
values[VAR_CHANNEL] = ch;
av_fft_permute(s->fft, fft_data);
av_fft_calc(s->fft, fft_data);
}
for (ch = 0; ch < inlink->channels; ch++) {
FFTComplex *fft_data = s->fft_data[ch];
FFTComplex *fft_temp = s->fft_temp[ch];
float *buf = (float *)s->buffer->extended_data[ch];
int x;
values[VAR_CHANNEL] = ch;
for (n = 0; n <= window_size / 2; n++) {
float fr, fi;