aper_support.h

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/*
 * Copyright (c) 2005-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
 * Redistribution and modifications are permitted subject to BSD license.
 */
#ifndef _APER_SUPPORT_H_
#define _APER_SUPPORT_H_
 
#include <etsi_its_denm_coding/asn_system.h>            /* Platform-specific types */
#include <etsi_its_denm_coding/per_support.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 * X.691 (08/2015) #11.9 "General rules for encoding a length determinant"
 * Get the length "n" from the Aligned PER stream.
 */
ssize_t aper_get_length(asn_per_data_t *pd, ssize_t lb, ssize_t ub,
                        int effective_bound_bits, int *repeat);
 
/*
 * Get the normally small length "n".
 */
ssize_t aper_get_nslength(asn_per_data_t *pd);
 
/*
 * Get the normally small non-negative whole number.
 */
ssize_t aper_get_nsnnwn(asn_per_data_t *pd);
 
/*
 * Get the constrained whole number.
 */
long aper_get_constrained_whole_number(asn_per_data_t *po, long lb, long ub);
 
/*
 * X.691 (08/2015) #11.9 "General rules for encoding a length determinant"
 * Put the length "n" to the Aligned PER stream.
 * If (opt_need_eom) is given, it will be set to 1 if final 0-n is needed.
 * In that case, invoke aper_put_length(po, -1, -1, 0, NULL) after encoding the
 * last block.
 * This function returns the number of units which may be flushed
 * in the next units saving iteration.
 */
ssize_t aper_put_length(asn_per_outp_t *po, ssize_t lb, ssize_t ub, size_t n,
                        int *opt_need_eom);
 
/* Align the current bit position to octet bundary */
int aper_put_align(asn_per_outp_t *po);
int32_t aper_get_align(asn_per_data_t *pd);
 
/*
 * Put the normally small length "n" to the Unaligned PER stream.
 * Returns 0 or -1.
 */
int aper_put_nslength(asn_per_outp_t *po, size_t length);
 
/*
 * Put the normally small non-negative whole number.
 */
int aper_put_nsnnwn(asn_per_outp_t *po, int number);
 
/*
 * Put the constrained whole number.
 */
int aper_put_constrained_whole_number(asn_per_outp_t *po, long lb, long ub, long number);
 
#ifdef __cplusplus
}
#endif
 
#endif  /* _APER_SUPPORT_H_ */