Handle input or output len of 0 properly in lzo decoder.

14 years ago · 7d5082600e
parent 91d51ee4b5
commit 7d5082600e
1 changed files with 8 additions and 0 deletions
--- a/libavutil/lzo.c
+++ b/libavutil/lzo.c
@ -175,6 +175,14 @@ int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen) {
    int state= 0;
    int x;
    LZOContext c;
+    if (!*outlen || !*inlen) {
+        int res = 0;
+        if (!*outlen)
+            res |= AV_LZO_OUTPUT_FULL;
+        if (!*inlen)
+            res |= AV_LZO_INPUT_DEPLETED;
+        return res;
+    }
    c.in = in;
    c.in_end = (const uint8_t *)in + *inlen;
    c.out = c.out_start = out;