avfilter/vf_ssim360: Fix left-shift of negative value

Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2 years ago · 54659e329e
parent c0cf2c4786
commit 54659e329e
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/vf_ssim360.c
+++ b/libavfilter/vf_ssim360.c
@ -547,7 +547,7 @@ static double ssim360_db(double ssim360, double weight)
 static int get_bilinear_sample(const uint8_t *data, BilinearMap *m, int max_value)
 {
    static const int fixed_point_half = 1 << (FIXED_POINT_PRECISION - 1);
-    static const int inv_byte_mask = (-1) << 8;
+    static const int inv_byte_mask = UINT_MAX << 8;

    int tl, tr, bl, br, v;