1 files changed, 54 insertions, 0 deletions
diff --git a/skeletons/per_support.h b/skeletons/per_support.h
new file mode 100644
index 00000000..25c92566
--- /dev/null
+++ b/skeletons/per_support.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2005 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 */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * This structure describes a position inside a PER bit stream.
+ */
+typedef struct asn_per_data_s {
+	uint8_t *buffer;	/* Pointer to the octet stream */
+	size_t   nboff;		/* Bit offset to the meaningful bit */
+	size_t   nbits;		/* Number of bits in the stream */
+} asn_per_data_t;
+
+/*
+ * Extract a small number of bits (<= 24) 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);
+
+/*
+ * 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
+ * extracted due to EOD or other conditions.
+ */
+int per_get_many_bits(asn_per_data_t *pd, uint8_t *dst, int right_align,
+			int get_nbits);
+
+/*
+ * Get the length "n" from the Unaligned PER stream.
+ */
+ssize_t uper_get_length(asn_per_data_t *pd,
+			int effective_bound_bits,
+			int *repeat);
+
+/*
+ * Get the normally small non-negative whole number.
+ */
+ssize_t uper_get_nsnnwn(asn_per_data_t *pd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _PER_SUPPORT_H_ */