diff options
Diffstat (limited to 'skeletons/per_support.h')
| -rw-r--r-- | skeletons/per_support.h | 68 |
1 files changed, 44 insertions, 24 deletions
diff --git a/skeletons/per_support.h b/skeletons/per_support.h index 747abe27..7e5e5940 100644 --- a/skeletons/per_support.h +++ b/skeletons/per_support.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2005 Lev Walkin <vlm@lionet.info>. All rights reserved. + * Copyright (c) 2005, 2006 Lev Walkin <vlm@lionet.info>. All rights reserved. * Redistribution and modifications are permitted subject to BSD license. */ #ifndef _PER_SUPPORT_H_ @@ -12,6 +12,26 @@ extern "C" { #endif /* + * Pre-computed PER constraints. + */ +typedef struct asn_per_constraint_s { + 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 */ + } 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; + +/* * This structure describes a position inside an incoming PER bit stream. */ typedef struct asn_per_data_s { @@ -21,27 +41,12 @@ typedef struct asn_per_data_s { } asn_per_data_t; /* - * This structure supports forming PER output. - */ -typedef struct asn_per_outp_s { - uint8_t *buffer; /* Pointer into the (tmpspace) */ - size_t nboff; /* Bit offset to the meaningful bit */ - size_t nbits; /* Number of bits left in (tmpspace) */ - uint8_t tmpspace[32]; /* Preliminary storage to hold data */ - int (*outper)(const void *data, size_t size, void *op_key); - void *op_key; -} asn_per_outp_t; - -/* * Extract a small number of bits (<= 31) from the specified PER data pointer. * This function returns -1 if the specified number of bits could not be * extracted due to EOD or other conditions. */ int32_t per_get_few_bits(asn_per_data_t *per_data, int get_nbits); -/* Output a small number of bits (<= 31) */ -int per_put_few_bits(asn_per_outp_t *per_data, uint32_t bits, int obits); - /* * Extract a large number of bits from the specified PER data pointer. * This function returns -1 if the specified number of bits could not be @@ -50,9 +55,6 @@ int per_put_few_bits(asn_per_outp_t *per_data, uint32_t bits, int obits); int per_get_many_bits(asn_per_data_t *pd, uint8_t *dst, int right_align, int get_nbits); -/* Output a large number of bits */ -int per_put_many_bits(asn_per_outp_t *po, const uint8_t *src, int put_nbits); - /* * Get the length "n" from the Unaligned PER stream. */ @@ -61,6 +63,29 @@ ssize_t uper_get_length(asn_per_data_t *pd, int *repeat); /* + * Get the normally small non-negative whole number. + */ +ssize_t uper_get_nsnnwn(asn_per_data_t *pd); + +/* + * This structure supports forming PER output. + */ +typedef struct asn_per_outp_s { + uint8_t *buffer; /* Pointer into the (tmpspace) */ + size_t nboff; /* Bit offset to the meaningful bit */ + size_t nbits; /* Number of bits left in (tmpspace) */ + uint8_t tmpspace[32]; /* Preliminary storage to hold data */ + int (*outper)(const void *data, size_t size, void *op_key); + void *op_key; +} asn_per_outp_t; + +/* Output a small number of bits (<= 31) */ +int per_put_few_bits(asn_per_outp_t *per_data, uint32_t bits, int obits); + +/* Output a large number of bits */ +int per_put_many_bits(asn_per_outp_t *po, const uint8_t *src, int put_nbits); + +/* * Put the length "n" to the Unaligned PER stream. * This function returns the number of units which may be flushed * in the next units saving iteration. @@ -68,11 +93,6 @@ ssize_t uper_get_length(asn_per_data_t *pd, ssize_t uper_put_length(asn_per_outp_t *po, size_t whole_length); /* - * Get the normally small non-negative whole number. - */ -ssize_t uper_get_nsnnwn(asn_per_data_t *pd); - -/* * Put the normally small non-negative whole number. */ int uper_put_nsnnwn(asn_per_outp_t *po, int n); |