--- /dev/null
+/*****************************************************************************
+# *
+# Copyright 2019 AT&T Intellectual Property *
+# Copyright 2019 Nokia *
+# *
+# Licensed under the Apache License, Version 2.0 (the "License"); *
+# you may not use this file except in compliance with the License. *
+# You may obtain a copy of the License at *
+# *
+# http://www.apache.org/licenses/LICENSE-2.0 *
+# *
+# Unless required by applicable law or agreed to in writing, software *
+# distributed under the License is distributed on an "AS IS" BASIS, *
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
+# See the License for the specific language governing permissions and *
+# limitations under the License. *
+# *
+******************************************************************************/
+#ifndef X2AP_ASN_CODEC_HPP
+#define X2AP_ASN_CODEC_HPP
+
+#include "e2sim_defs.h"
+#include "asn_x2ap.hpp"
+
+#define X2AP_ERROR_MESSAGE_BUFFER 1024
+#define X2AP_PDU_PRINT_BUFFER 4096
+
+void x2ap_encode_pdu(x2ap_pdu_t* pdu, unsigned char* buf, int buf_size, int &encoded_size);
+
+void x2ap_decode_pdu(x2ap_pdu_t* pdu, unsigned char* buf, int &encoded_size);
+
+void x2ap_print_pdu(x2ap_pdu_t* pdu);
+
+#endif