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
|
/*
* 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
*/
#include <libucsi/atsc/rrt_section.h>
struct atsc_rrt_section *atsc_rrt_section_codec(struct atsc_section_psip *psip)
{
uint8_t * buf = (uint8_t *) psip;
size_t pos = 0;
size_t len = section_ext_length(&(psip->ext_head));
int idx;
int vidx;
struct atsc_rrt_section *rrt = (struct atsc_rrt_section *) psip;
if (len < sizeof(struct atsc_rrt_section))
return NULL;
pos += sizeof(struct atsc_rrt_section);
if (len < (pos + rrt->rating_region_name_length))
return NULL;
if (atsc_text_validate(buf+pos, rrt->rating_region_name_length))
return NULL;
pos += rrt->rating_region_name_length;
if (len < (pos + sizeof(struct atsc_rrt_section_part2)))
return NULL;
struct atsc_rrt_section_part2 *rrtpart2 = (struct atsc_rrt_section_part2 *) (buf+pos);
pos += sizeof(struct atsc_rrt_section_part2);
for(idx =0; idx < rrtpart2->dimensions_defined; idx++) {
if (len < (pos + sizeof(struct atsc_rrt_dimension)))
return NULL;
struct atsc_rrt_dimension *dimension = (struct atsc_rrt_dimension *) (buf+pos);
pos += sizeof(struct atsc_rrt_dimension);
if (len < (pos + dimension->dimension_name_length))
return NULL;
if (atsc_text_validate(buf+pos, dimension->dimension_name_length))
return NULL;
pos += dimension->dimension_name_length;
if (len < (pos + sizeof(struct atsc_rrt_dimension_part2)))
return NULL;
struct atsc_rrt_dimension_part2 *dpart2 = (struct atsc_rrt_dimension_part2 *) (buf+pos);
pos += sizeof(struct atsc_rrt_dimension_part2);
for(vidx =0; vidx < dpart2->values_defined; vidx++) {
if (len < (pos + sizeof(struct atsc_rrt_dimension_value)))
return NULL;
struct atsc_rrt_dimension_value *value = (struct atsc_rrt_dimension_value *) (buf+pos);
pos += sizeof(struct atsc_rrt_dimension_value);
if (len < (pos + value->abbrev_rating_value_length))
return NULL;
if (atsc_text_validate(buf+pos, value->abbrev_rating_value_length))
return NULL;
pos += value->abbrev_rating_value_length;
if (len < (pos + sizeof(struct atsc_rrt_dimension_value_part2)))
return NULL;
struct atsc_rrt_dimension_value_part2 *vpart2 =
(struct atsc_rrt_dimension_value_part2 *) (buf+pos);
pos += sizeof(struct atsc_rrt_dimension_value_part2);
if (len < (pos + vpart2->rating_value_length))
return NULL;
if (atsc_text_validate(buf+pos, vpart2->rating_value_length))
return NULL;
pos+= vpart2->rating_value_length;
}
}
if (len < (pos + sizeof(struct atsc_rrt_section_part3)))
return NULL;
struct atsc_rrt_section_part3 *part3 = (struct atsc_rrt_section_part3 *) (buf+pos);
pos += sizeof(struct atsc_rrt_section_part3);
if (len < (pos + part3->descriptors_length))
return NULL;
if (verify_descriptors(buf + pos, part3->descriptors_length))
return NULL;
pos += part3->descriptors_length;
if (pos != len)
return NULL;
return (struct atsc_rrt_section *) psip;
}
|
