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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (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.openairinterface.org/?page_id=698
*
* 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.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
#ifndef ASN1_CONVERSIONS_H_
#define ASN1_CONVERSIONS_H_
#include "BIT_STRING.h"
#include "assertions.h"
//-----------------------begin func -------------------
/*! \fn uint8_t BIT_STRING_to_uint8(BIT_STRING_t *)
*\brief This function extract at most a 8 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
*\param[in] pointer to the BIT_STRING_t object.
*\return the extracted value.
*/
static inline uint8_t BIT_STRING_to_uint8(BIT_STRING_t *asn) {
DevCheck ((asn->size == 1), asn->size, 0, 0);
return asn->buf[0] >> asn->bits_unused;
}
/*! \fn uint16_t BIT_STRING_to_uint16(BIT_STRING_t *)
*\brief This function extract at most a 16 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
*\param[in] pointer to the BIT_STRING_t object.
*\return the extracted value.
*/
static inline uint16_t BIT_STRING_to_uint16(BIT_STRING_t *asn) {
uint16_t result = 0;
int index = 0;
DevCheck ((asn->size > 0) && (asn->size <= 2), asn->size, 0, 0);
switch (asn->size) {
case 2:
result |= asn->buf[index++] << (8 - asn->bits_unused);
case 1:
result |= asn->buf[index] >> asn->bits_unused;
break;
default:
break;
}
return result;
}
/*! \fn uint32_t BIT_STRING_to_uint32(BIT_STRING_t *)
*\brief This function extract at most a 32 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
*\param[in] pointer to the BIT_STRING_t object.
*\return the extracted value.
*/
static inline uint32_t BIT_STRING_to_uint32(BIT_STRING_t *asn) {
uint32_t result = 0;
int index;
int shift;
DevCheck ((asn->size > 0) && (asn->size <= 4), asn->size, 0, 0);
shift = ((asn->size - 1) * 8) - asn->bits_unused;
for (index = 0; index < (asn->size - 1); index++) {
result |= asn->buf[index] << shift;
shift -= 8;
}
result |= asn->buf[index] >> asn->bits_unused;
return result;
}
/*! \fn uint64_t BIT_STRING_to_uint64(BIT_STRING_t *)
*\brief This function extract at most a 64 bits value from a BIT_STRING_t object, the exact bits number depend on the BIT_STRING_t contents.
*\param[in] pointer to the BIT_STRING_t object.
*\return the extracted value.
*/
static inline uint64_t BIT_STRING_to_uint64(BIT_STRING_t *asn) {
uint64_t result = 0;
int index;
int shift;
DevCheck ((asn->size > 0) && (asn->size <= 8), asn->size, 0, 0);
shift = ((asn->size - 1) * 8) - asn->bits_unused;
for (index = 0; index < (asn->size - 1); index++) {
result |= ((uint64_t)asn->buf[index]) << shift;
shift -= 8;
}
result |= ((uint64_t)asn->buf[index]) >> asn->bits_unused;
return result;
}
#endif