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Diffstat (limited to 'libavfilter/avf_showwaves.c')
-rw-r--r-- | libavfilter/avf_showwaves.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavfilter/avf_showwaves.c b/libavfilter/avf_showwaves.c index 57a6b2e149..a19acf54b9 100644 --- a/libavfilter/avf_showwaves.c +++ b/libavfilter/avf_showwaves.c @@ -203,6 +203,11 @@ static int push_single_pic(AVFilterLink *outlink) int col = 0; int64_t *sum = showwaves->sum; + if (max_samples == 0) { + av_log(ctx, AV_LOG_ERROR, "Too few samples\n"); + return AVERROR(EINVAL); + } + av_log(ctx, AV_LOG_DEBUG, "Create frame averaging %"PRId64" samples per column\n", max_samples); memset(sum, 0, nb_channels); |