aboutsummaryrefslogtreecommitdiffstats
path: root/lib/libucsi/dvb/telephone_descriptor.h
blob: 3dc43a1e22c388cfd106307907f46f2858e91a7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
/*
 * section and descriptor parser
 *
 * Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
 * Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#ifndef _UCSI_DVB_TELEPHONE_DESCRIPTOR
#define _UCSI_DVB_TELEPHONE_DESCRIPTOR 1

#ifdef __cplusplus
extern "C"
{
#endif

#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>

/**
 * dvb_telephone_descriptor stucture.
 */
struct dvb_telephone_descriptor {
	struct descriptor d;

  EBIT3(uint8_t reserved_1			: 2; ,
	uint8_t foreign_availability		: 1; ,
	uint8_t connection_type			: 5; );
  EBIT4(uint8_t reserved_2			: 1; ,
	uint8_t country_prefix_length		: 2; ,
	uint8_t international_area_code_length	: 3; ,
	uint8_t operator_code_length		: 2; );
  EBIT3(uint8_t reserved_3			: 1; ,
	uint8_t national_area_code_length	: 3; ,
	uint8_t core_number_length		: 4; );
	/* uint8_t country_prefix[] */
	/* uint8_t international_area_code[] */
	/* uint8_t operator_code[] */
	/* uint8_t national_area_code[] */
	/* uint8_t core_number[] */
} __ucsi_packed;


/**
 * Process a dvb_telephone_descriptor.
 *
 * @param d Generic descriptor.
 * @return dvb_telephone_descriptor pointer, or NULL on error.
 */
static inline struct dvb_telephone_descriptor*
	dvb_telephone_descriptor_codec(struct descriptor* d)
{
	struct dvb_telephone_descriptor* p =
		(struct dvb_telephone_descriptor*) d;
	uint32_t pos = sizeof(struct dvb_telephone_descriptor) - 2;
	uint32_t len = d->len;

	if (pos > len)
		return NULL;

	pos +=  p->country_prefix_length +
		p->international_area_code_length +
		p->operator_code_length +
		p->national_area_code_length +
		p->core_number_length;

	if (pos != len)
		return NULL;

	return p;
}

/**
 * Retrieve pointer to country_prefix field of a dvb_telephone_descriptor.
 *
 * @param d dvb_telephone_descriptor pointer.
 * @return Pointer to the field.
 */
static inline uint8_t*
	dvb_telephone_descriptor_country_prefix(struct dvb_telephone_descriptor* d)
{
	return (uint8_t*) d + sizeof(struct dvb_telephone_descriptor);
}

/**
 * Retrieve pointer to international_area_code field of a dvb_telephone_descriptor.
 *
 * @param d dvb_telephone_descriptor pointer.
 * @return Pointer to the field.
 */
static inline uint8_t*
	dvb_telephone_descriptor_international_area_code(struct dvb_telephone_descriptor* d)
{
	return dvb_telephone_descriptor_country_prefix(d) + d->country_prefix_length;
}

/**
 * Retrieve pointer to operator_code field of a dvb_telephone_descriptor.
 *
 * @param d dvb_telephone_descriptor pointer.
 * @return Pointer to the field.
 */
static inline uint8_t*
	dvb_telephone_descriptor_operator_code(struct dvb_telephone_descriptor* d)
{
	return dvb_telephone_descriptor_international_area_code(d) + d->international_area_code_length;
}

/**
 * Retrieve pointer to national_area_code field of a dvb_telephone_descriptor.
 *
 * @param d dvb_telephone_descriptor pointer.
 * @return Pointer to the field.
 */
static inline uint8_t*
	dvb_telephone_descriptor_national_area_code(struct dvb_telephone_descriptor* d)
{
	return dvb_telephone_descriptor_operator_code(d) + d->operator_code_length;
}

/**
 * Retrieve pointer to core_number field of a dvb_telephone_descriptor.
 *
 * @param d dvb_telephone_descriptor pointer.
 * @return Pointer to the field.
 */
static inline uint8_t*
	dvb_telephone_descriptor_core_number(struct dvb_telephone_descriptor* d)
{
	return dvb_telephone_descriptor_national_area_code(d) + d->national_area_code_length;
}

#ifdef __cplusplus
}
#endif

#endif