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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
* 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_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR
#define _UCSI_DVB_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
/**
* dvb_multilingual_service_name_descriptor structure.
*/
struct dvb_multilingual_service_name_descriptor {
struct descriptor d;
/* struct dvb_multilingual_service_name names[] */
} __ucsi_packed;
/**
* An entry in the service_names field of a dvb_multilingual_service_name_descriptor.
*/
struct dvb_multilingual_service_name {
iso639lang_t language_code;
uint8_t service_provider_name_length;
/* uint8_t service_provider_name[] */
/* struct dvb_multilingual_service_name_part2 part2 */
} __ucsi_packed;
/**
* Second part of a dvb_multilingual_service_name following the variable length
* service_provider_name.
*/
struct dvb_multilingual_service_name_part2 {
uint8_t service_name_length;
/* uint8_t service_name[] */
} __ucsi_packed;
/**
* Process a dvb_multilingual_service_name_descriptor.
*
* @param d Generic descriptor pointer.
* @return dvb_multilingual_service_name_descriptor pointer, or NULL on error.
*/
static inline struct dvb_multilingual_service_name_descriptor*
dvb_multilingual_service_name_descriptor_codec(struct descriptor* d)
{
uint8_t* buf = (uint8_t*) d + 2;
uint32_t pos = 0;
uint32_t len = d->len;
while(pos < len) {
struct dvb_multilingual_service_name *e =
(struct dvb_multilingual_service_name*) (buf+pos);
struct dvb_multilingual_service_name_part2 *e2;
pos += sizeof(struct dvb_multilingual_service_name);
if (pos > len)
return NULL;
pos += e->service_provider_name_length;
if (pos > len)
return NULL;
e2 = (struct dvb_multilingual_service_name_part2*) (buf+pos);
pos += sizeof(struct dvb_multilingual_service_name_part2);
if (pos > len)
return NULL;
pos += e2->service_name_length;
if (pos > len)
return NULL;
}
return (struct dvb_multilingual_service_name_descriptor*) d;
}
/**
* Iterator for entries in the service_name field of a dvb_multilingual_service_name_descriptor.
*
* @param d dvb_multilingual_service_name_descriptor pointer,
* @param pos Variable containing pointer to the current dvb_multilingual_service_name.
*/
#define dvb_multilingual_service_name_descriptor_names_for_each(d, pos) \
for ((pos) = dvb_multilingual_service_name_descriptor_names_first(d); \
(pos); \
(pos) = dvb_multilingual_service_name_descriptor_names_next(d, pos))
/**
* Accessor for the service_provider_name field of a dvb_multilingual_service_name.
*
* @param e dvb_multilingual_service_name pointer.
* @return Pointer to the field.
*/
static inline uint8_t *
dvb_multilingual_service_name_service_provider_name(struct dvb_multilingual_service_name *e)
{
return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name);
}
/**
* Accessor for the dvb_multilingual_service_name_part2 - second part of a
* dvb_multilingual_service_name following the service_name field.
*
* @param e dvb_multilingual_service_name Pointer.
* @return dvb_multilingual_service_name_part2 pointer.
*/
static inline struct dvb_multilingual_service_name_part2 *
dvb_multilingual_service_name_part2(struct dvb_multilingual_service_name *e)
{
return (struct dvb_multilingual_service_name_part2 *)
((uint8_t *) e + sizeof(struct dvb_multilingual_service_name) +
e->service_provider_name_length);
}
/**
* Accessor for the service_name field of a dvb_multilingual_service_name_part2.
*
* @param e dvb_multilingual_service_name_part2 pointer.
* @return Pointer to the field.
*/
static inline uint8_t *
dvb_multilingual_service_name_service_name(struct dvb_multilingual_service_name_part2 *e)
{
return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name_part2);
}
/******************************** PRIVATE CODE ********************************/
static inline struct dvb_multilingual_service_name*
dvb_multilingual_service_name_descriptor_names_first(struct dvb_multilingual_service_name_descriptor *d)
{
if (d->d.len == 0)
return NULL;
return (struct dvb_multilingual_service_name *)
((uint8_t*) d + sizeof(struct dvb_multilingual_service_name_descriptor));
}
static inline struct dvb_multilingual_service_name*
dvb_multilingual_service_name_descriptor_names_next(struct dvb_multilingual_service_name_descriptor *d,
struct dvb_multilingual_service_name *pos)
{
struct dvb_multilingual_service_name_part2 * part2 =
dvb_multilingual_service_name_part2(pos);
uint8_t *end = (uint8_t*) d + 2 + d->d.len;
uint8_t *next = (uint8_t *) part2+
sizeof(struct dvb_multilingual_service_name_part2) +
part2->service_name_length;
if (next >= end)
return NULL;
return (struct dvb_multilingual_service_name *) next;
}
#ifdef __cplusplus
}
#endif
#endif
|
