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