upgrade: PER related changes
diff --git a/skeletons/per_decoder.h b/skeletons/per_decoder.h
new file mode 100644
index 0000000..6303b3c
--- /dev/null
+++ b/skeletons/per_decoder.h
@@ -0,0 +1,55 @@
+/*-
+ * 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
+
+
+/*
+ * 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;
+
+
+struct asn_TYPE_descriptor_s; /* Forward declaration */
+
+/*
+ * 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_ */