diff options
| -rw-r--r-- | libavfilter/avf_showspectrum.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c index 87766688f8..09b5a2a51f 100644 --- a/libavfilter/avf_showspectrum.c +++ b/libavfilter/avf_showspectrum.c @@ -1022,17 +1022,19 @@ static int showspectrumpic_request_frame(AVFilterLink *outlink) AVFilterContext *ctx = outlink->src; ShowSpectrumContext *s = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; - int ret; + int ret, samples; ret = ff_request_frame(inlink); - if (ret == AVERROR_EOF && s->outpicref) { - int samples = av_audio_fifo_size(s->fifo); + samples = av_audio_fifo_size(s->fifo); + if (ret == AVERROR_EOF && s->outpicref && samples > 0) { int consumed = 0; int y, x = 0, sz = s->orientation == VERTICAL ? s->w : s->h; int ch, spf, spb; AVFrame *fin; spf = s->win_size * (samples / ((s->win_size * sz) * ceil(samples / (float)(s->win_size * sz)))); + spf = FFMAX(1, spf); + spb = (samples / (spf * sz)) * spf; fin = ff_get_audio_buffer(inlink, s->win_size); |