Enhanced SIM for E2AP v1 for TS UC

[sim/e2-interface.git] / e2sim / e2apv1sim / ASN1c / per_support.h

diff --git a/e2sim/e2apv1sim/ASN1c/per_support.h b/e2sim/e2apv1sim/ASN1c/per_support.h
new file mode 100644 (file)
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+++ b/e2sim/e2apv1sim/ASN1c/per_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        _PER_SUPPORT_H_
+#define        _PER_SUPPORT_H_
+
+#include <asn_system.h>                /* Platform-specific types */
+#include <asn_bit_data.h>
+
+#ifdef __cplusplus
+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;
+       int (*value2code)(unsigned int value);
+       int (*code2value)(unsigned int code);
+} asn_per_constraints_t;
+
+/* Temporary compatibility layer. Will get removed. */
+typedef struct asn_bit_data_s asn_per_data_t;
+#define per_get_few_bits(data, bits)   asn_get_few_bits(data, bits)
+#define per_get_undo(data, bits)   asn_get_undo(data, bits)
+#define per_get_many_bits(data, dst, align, bits) \
+    asn_get_many_bits(data, dst, align, bits)
+
+/*
+ * X.691 (08/2015) #11.9 "General rules for encoding a length determinant"
+ * Get the length "n" from the Unaligned PER stream.
+ */
+ssize_t uper_get_length(asn_per_data_t *pd, int effective_bound_bits,
+                        size_t lower_bound, int *repeat);
+
+ssize_t aper_get_length(asn_per_data_t *pd, int range,
+                        int effective_bound_bits, int *repeat);
+
+/*
+ * Get the normally small length "n".
+ */
+ssize_t uper_get_nslength(asn_per_data_t *pd);
+ssize_t aper_get_nslength(asn_per_data_t *pd);
+
+/*
+ * Get the normally small non-negative whole number.
+ */
+ssize_t uper_get_nsnnwn(asn_per_data_t *pd);
+ssize_t aper_get_nsnnwn(asn_per_data_t *pd, int range);
+
+/* X.691-2008/11, #11.5.6 */
+int uper_get_constrained_whole_number(asn_per_data_t *pd, unsigned long *v, int nbits);
+
+
+/* Temporary compatibility layer. Will get removed. */
+typedef struct asn_bit_outp_s asn_per_outp_t;
+#define per_put_few_bits(out, bits, obits) asn_put_few_bits(out, bits, obits)
+#define per_put_many_bits(out, src, nbits) asn_put_many_bits(out, src, nbits)
+#define per_put_aligned_flush(out) asn_put_aligned_flush(out)
+
+
+/*
+ * Rebase the given value as an offset into the range specified by the
+ * lower bound (lb) and upper bound (ub).
+ * RETURN VALUES:
+ *  -1: Conversion failed due to range problems.
+ *   0: Conversion was successful.
+ */
+int per_long_range_rebase(long v, long lb, long ub, unsigned long *output);
+/* The inverse operation: restores the value by the offset and its bounds. */
+int per_long_range_unrebase(unsigned long inp, long lb, long ub, long *outp);
+
+/* X.691-2008/11, #11.5 */
+int uper_put_constrained_whole_number_u(asn_per_outp_t *po, unsigned long v, int nbits);
+
+/*
+ * X.691 (08/2015) #11.9 "General rules for encoding a length determinant"
+ * Put the length "whole_length" to the Unaligned PER stream.
+ * If (opt_need_eom) is given, it will be set to 1 if final 0-length is needed.
+ * In that case, invoke uper_put_length(po, 0, 0) after encoding the last block.
+ * This function returns the number of units which may be flushed
+ * in the next units saving iteration.
+ */
+ssize_t uper_put_length(asn_per_outp_t *po, size_t whole_length,
+                        int *opt_need_eom);
+
+ssize_t aper_put_length(asn_per_outp_t *po, int range, size_t length);
+
+/* 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 uper_put_nslength(asn_per_outp_t *po, size_t length);
+
+int aper_put_nslength(asn_per_outp_t *po, size_t length);
+
+/*
+ * Put the normally small non-negative whole number.
+ */
+int uper_put_nsnnwn(asn_per_outp_t *po, int n);
+
+int aper_put_nsnnwn(asn_per_outp_t *po, int range, int number);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PER_SUPPORT_H_ */