avfilter/avf_showvolume: make use of av_rescale

6 years ago · d2e76a1f96
parent 618f8bb0a4
commit d2e76a1f96
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/avf_showvolume.c
+++ b/libavfilter/avf_showvolume.c
@ -165,7 +165,7 @@ static int config_input(AVFilterLink *inlink)
    AVFilterContext *ctx = inlink->dst;
    ShowVolumeContext *s = ctx->priv;

-    s->nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
+    s->nb_samples = FFMAX(1, av_rescale(inlink->sample_rate, s->frame_rate.den, s->frame_rate.num));
    s->values = av_calloc(inlink->channels * VAR_VARS_NB, sizeof(double));
    if (!s->values)
        return AVERROR(ENOMEM);