avfilter/showwaves: fix height range for cline mode

This commit is contained in:
Clément Bœsch 2014-12-24 15:11:44 +01:00
parent f6950a077c
commit ecafde6606

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@ -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++)