114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#ifndef ASN1_CONVERSIONS_H_
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#define ASN1_CONVERSIONS_H_
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#include "BIT_STRING.h"
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#include "assertions.h"
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//-----------------------begin func -------------------
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/*! \fn uint8_t BIT_STRING_to_uint8(BIT_STRING_t *)
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*\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.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint8_t BIT_STRING_to_uint8(BIT_STRING_t *asn) {
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DevCheck ((asn->size == 1), asn->size, 0, 0);
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return asn->buf[0] >> asn->bits_unused;
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}
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/*! \fn uint16_t BIT_STRING_to_uint16(BIT_STRING_t *)
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*\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.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint16_t BIT_STRING_to_uint16(BIT_STRING_t *asn) {
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uint16_t result = 0;
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int index = 0;
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DevCheck ((asn->size > 0) && (asn->size <= 2), asn->size, 0, 0);
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switch (asn->size) {
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case 2:
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result |= asn->buf[index++] << (8 - asn->bits_unused);
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case 1:
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result |= asn->buf[index] >> asn->bits_unused;
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break;
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default:
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break;
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}
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return result;
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}
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/*! \fn uint32_t BIT_STRING_to_uint32(BIT_STRING_t *)
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*\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.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint32_t BIT_STRING_to_uint32(BIT_STRING_t *asn) {
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uint32_t result = 0;
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int index;
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int shift;
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DevCheck ((asn->size > 0) && (asn->size <= 4), asn->size, 0, 0);
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shift = ((asn->size - 1) * 8) - asn->bits_unused;
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for (index = 0; index < (asn->size - 1); index++) {
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result |= asn->buf[index] << shift;
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shift -= 8;
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}
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result |= asn->buf[index] >> asn->bits_unused;
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return result;
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}
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/*! \fn uint64_t BIT_STRING_to_uint64(BIT_STRING_t *)
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*\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.
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*\param[in] pointer to the BIT_STRING_t object.
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*\return the extracted value.
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*/
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static inline uint64_t BIT_STRING_to_uint64(BIT_STRING_t *asn) {
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uint64_t result = 0;
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int index;
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int shift;
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DevCheck ((asn->size > 0) && (asn->size <= 8), asn->size, 0, 0);
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shift = ((asn->size - 1) * 8) - asn->bits_unused;
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for (index = 0; index < (asn->size - 1); index++) {
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result |= ((uint64_t)asn->buf[index]) << shift;
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shift -= 8;
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}
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result |= ((uint64_t)asn->buf[index]) >> asn->bits_unused;
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return result;
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}
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#endif
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