--- /dev/null
+/*-
+ * Copyright (c) 2005-2017 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 */
+
+/*
+ * Type of the type-specific PER decoder function.
+ */
+typedef asn_dec_rval_t(per_type_decoder_f)(
+ const asn_codec_ctx_t *opt_codec_ctx,
+ const struct asn_TYPE_descriptor_s *type_descriptor,
+ const asn_per_constraints_t *constraints, void **struct_ptr,
+ asn_per_data_t *per_data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _PER_DECODER_H_ */