libavfilter/af_hdcd: fixed negative signed value shift

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · 5836a5037e
parent 89806e0b9a
commit 5836a5037e
1 changed files with 1 additions and 1 deletions
--- a/libavfilter/af_hdcd.c
+++ b/libavfilter/af_hdcd.c
@ -893,7 +893,7 @@ static int integrate(hdcd_state_t *state, int *flag, const int32_t *samples, int
        state->code_counterC++;
    } else {
        if (bits)
-            state->readahead = readaheadtab[bits & ~(-1 << 8)];
+            state->readahead = readaheadtab[bits & ~((unsigned) -1 << 8)];
        else
            state->readahead = 31; /* ffwd over digisilence */
    }