2 * Copyright (c) 2005, 2007 Lev Walkin <vlm@lionet.info>. All rights reserved.
3 * Redistribution and modifications are permitted subject to BSD license.
5 #ifndef _PER_DECODER_H_
6 #define _PER_DECODER_H_
8 #include <asn_application.h>
9 #include <per_support.h>
15 struct asn_TYPE_descriptor_s; /* Forward declaration */
18 * Unaligned PER decoder of a "complete encoding" as per X.691#10.1.
19 * On success, this call always returns (.consumed >= 1), as per X.691#10.1.3.
21 asn_dec_rval_t uper_decode_complete(struct asn_codec_ctx_s *opt_codec_ctx,
22 struct asn_TYPE_descriptor_s *type_descriptor, /* Type to decode */
23 void **struct_ptr, /* Pointer to a target structure's pointer */
24 const void *buffer, /* Data to be decoded */
25 size_t size /* Size of data buffer */
29 * Unaligned PER decoder of any ASN.1 type. May be invoked by the application.
30 * WARNING: This call returns the number of BITS read from the stream. Beware.
32 asn_dec_rval_t uper_decode(struct asn_codec_ctx_s *opt_codec_ctx,
33 struct asn_TYPE_descriptor_s *type_descriptor, /* Type to decode */
34 void **struct_ptr, /* Pointer to a target structure's pointer */
35 const void *buffer, /* Data to be decoded */
36 size_t size, /* Size of data buffer */
37 int skip_bits, /* Number of unused leading bits, 0..7 */
38 int unused_bits /* Number of unused tailing bits, 0..7 */
43 * Type of the type-specific PER decoder function.
45 typedef asn_dec_rval_t (per_type_decoder_f)(asn_codec_ctx_t *opt_codec_ctx,
46 struct asn_TYPE_descriptor_s *type_descriptor,
47 asn_per_constraints_t *constraints,
49 asn_per_data_t *per_data
56 #endif /* _PER_DECODER_H_ */