avfilter/showwaves: fix height range for cline mode

10 years ago · ecafde6606
parent f6950a077c
commit ecafde6606
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/avf_showwaves.c
+++ b/libavfilter/avf_showwaves.c
@ -222,7 +222,7 @@ static void draw_sample_cline(uint8_t *buf, int height, int linesize,
                              int16_t sample, int16_t *prev_y, int intensity)
 {
    int k;
-    const int h     = av_rescale(abs(sample), height, UINT16_MAX);
+    const int h     = av_rescale(abs(sample), height, INT16_MAX);
    const int start = (height - h) / 2;
    const int end   = start + h;
    for (k = start; k < end; k++)