vorbiscomment: convert metadata before computing the header's length

[ffmpeg] / libavformat / network.h

diff --git a/libavformat/network.h b/libavformat/network.h
index 07112ef7ef109f891c5872cb1c20bace03c7d4ee..d6aee931217d419b2a4718d328bf046a197b9413 100644 (file)
--- a/libavformat/network.h
+++ b/libavformat/network.h
@@ -162,4 +162,18 @@ const char *ff_gai_strerror(int ecode);
 #define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
 #endif
 
+static inline int ff_is_multicast_address(struct sockaddr *addr)
+{
+    if (addr->sa_family == AF_INET) {
+        return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
+    }
+#if HAVE_STRUCT_SOCKADDR_IN6
+    if (addr->sa_family == AF_INET6) {
+        return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
+    }
+#endif
+
+    return 0;
+}
+
 #endif /* AVFORMAT_NETWORK_H */