lavc/lpc: do not explode when windowing a 1-length array

Divided by 0.
2 years ago · cc367a9b8a
parent e601ec3c19
commit cc367a9b8a
1 changed files with 5 additions and 0 deletions
--- a/libavcodec/lpc.c
+++ b/libavcodec/lpc.c
@ -38,6 +38,11 @@ static void lpc_apply_welch_window_c(const int32_t *data, int len,
    double w;
    double c;

+    if (len == 1) {
+        w_data[0] = 0.0;
+        return;
+    }
+
    n2 = (len >> 1);
    c = 2.0 / (len - 1.0);