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avfilter/avf_showcwt: do not return initial black frames with negative timestamps

This commit is contained in:
Paul B Mahol 2023-11-11 17:23:55 +01:00
parent 09f783692e
commit fa4c2884dd
1 changed files with 6 additions and 2 deletions
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8
libavfilter/avf_showcwt.c
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@ -672,8 +672,9 @@ static int run_channel_cwt(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo
memset(isrc, 0, sizeof(*isrc) * output_padding_size);
if (offset == 0) {
const unsigned *kindex = index + kernel_start;
for (int i = 0; i < kernel_range; i++) {
const unsigned n = index[i + kernel_start];
const unsigned n = kindex[i];
isrc[n].re += dstx[i].re;
isrc[n].im += dstx[i].im;
@ -1247,8 +1248,11 @@ static int activate(AVFilterContext *ctx)
ff_filter_execute(ctx, run_channels_cwt_prepare, fin, NULL,
FFMIN(s->nb_threads, s->nb_channels));
if (fin) {
if (s->hop_index == 0)
if (s->hop_index == 0) {
s->in_pts = fin->pts;
if (s->old_pts == AV_NOPTS_VALUE)
s->old_pts = av_rescale_q(s->in_pts, inlink->time_base, outlink->time_base) - 1;
}
s->hop_index += fin->nb_samples;
av_frame_free(&fin);
} else {