avcodec/ffwavesynth: Fix backward lcg_seek()

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
6 years ago · cf2bd3ce79
parent 37708cbae8
commit cf2bd3ce79
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/ffwavesynth.c
+++ b/libavcodec/ffwavesynth.c
@ -122,7 +122,7 @@ static void lcg_seek(uint32_t *s, int64_t dt)
        c = LCG_C;
    } else { /* coefficients for a step backward */
        a = LCG_AI;
-        c = (uint32_t)(LCG_AI * LCG_C);
+        c = (uint32_t)(-LCG_AI * LCG_C);
        dt = -dt;
    }
    while (dt) {