+#define OFFSET(x) offsetof(UDPContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "ttl", "Time to live (in milliseconds, multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, INT_MAX, .flags = D|E },
+ { "buffer_size", "System data size (in bytes)", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
+ { "local_port", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
+ { "reuse_socket", "Reuse socket", OFFSET(reuse_socket), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, .flags = D|E },
+ { "connect", "Connect socket", OFFSET(is_connected), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
+ { "pkt_size", "Maximum packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
+ { "localaddr", "Local address", OFFSET(localaddr), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
+ { "sources", "Source list", OFFSET(sources), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
+ { "block", "Block list", OFFSET(block), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E },
+ { NULL }
+};
+
+static const AVClass udp_class = {
+ .class_name = "udp",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+