mirror of https://gerrit.osmocom.org/asn1c
64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/*-
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* Copyright (c) 2005 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#ifndef _PER_DECODER_H_
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#define _PER_DECODER_H_
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#include <asn_application.h>
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#include <per_support.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct asn_TYPE_descriptor_s; /* Forward declaration */
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/*
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* Unaligned PER decoder of any ASN.1 type. May be invoked by the application.
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*/
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asn_dec_rval_t uper_decode(struct asn_codec_ctx_s *opt_codec_ctx,
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struct asn_TYPE_descriptor_s *type_descriptor, /* Type to decode */
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void **struct_ptr, /* Pointer to a target structure's pointer */
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const void *buffer, /* Data to be decoded */
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size_t size /* Size of data buffer */
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);
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/*
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* Pre-computed PER constraints.
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*/
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enum asn_per_constraint_flags {
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APC_UNCONSTRAINED = 0x0, /* No PER visible constraints */
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APC_SEMI_CONSTRAINED = 0x1, /* Constrained at "lb" */
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APC_CONSTRAINED = 0x2, /* Fully constrained */
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APC_EXTENSIBLE = 0x4 /* May have extension */
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};
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typedef struct asn_per_constraint_s {
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enum asn_per_constraint_flags flags;
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int range_bits; /* Full number of bits in the range */
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int effective_bits; /* Effective bits */
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long lower_bound; /* "lb" value */
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long upper_bound; /* "ub" value */
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} asn_per_constraint_t;
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typedef struct asn_per_constraints_s {
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asn_per_constraint_t value;
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asn_per_constraint_t size;
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} asn_per_constraints_t;
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/*
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* Type of the type-specific PER decoder function.
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*/
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typedef asn_dec_rval_t (per_type_decoder_f)(asn_codec_ctx_t *opt_codec_ctx,
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struct asn_TYPE_descriptor_s *type_descriptor,
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asn_per_constraints_t *constraints,
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void **struct_ptr,
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asn_per_data_t *per_data
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);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _PER_DECODER_H_ */
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