/usr/include/libucsi/dvb/sit_section.h is in dvb-apps 1.1.1+rev1500-1.1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | /*
* 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_SIT_SECTION_H
#define _UCSI_DVB_SIT_SECTION_H 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/section.h>
/**
* dvb_sit_section structure.
*/
struct dvb_sit_section {
struct section_ext head;
EBIT2(uint16_t reserved : 4; ,
uint16_t transmission_info_loop_length :12; );
/* struct descriptor descriptors[] */
/* struct dvb_sit_service services[] */
};
/**
* An entry in the services field of a dvb_sit_section.
*/
struct dvb_sit_service {
uint16_t service_id;
EBIT3(uint16_t reserved : 1; ,
uint16_t running_status : 3; ,
uint16_t service_loop_length :12; );
/* struct descriptor descriptors[] */
};
/**
* Process a dvb_sit_section.
*
* @param section Generic section_ext structure.
* @return dvb_sit_section pointer, or NULL on error.
*/
struct dvb_sit_section * dvb_sit_section_codec(struct section_ext *section);
/**
* Iterator for descriptors field in a dvb_sit_section.
*
* @param sit dvb_sit_section Pointer.
* @param pos Variable holding pointer to current descriptor.
*/
#define dvb_sit_section_descriptors_for_each(sit, pos) \
for ((pos) = dvb_sit_section_descriptors_first(sit); \
(pos); \
(pos) = dvb_sit_section_descriptors_first(sit))
/**
* Iterator for services field in a dvb_sit_section.
*
* @param sit dvb_sit_section Pointer.
* @param pos Variable holding pointer to current dvb_sit_service.
*/
#define dvb_sit_section_services_for_each(sit, pos) \
for ((pos) = dvb_sit_section_services_first(sit); \
(pos); \
(pos) = dvb_sit_section_services_next(sit, pos))
/**
* Iterator for descriptors field in a dvb_sit_service.
*
* @param service dvb_sit_service Pointer.
* @param pos Variable holding pointer to current descriptor.
*/
#define dvb_sit_service_descriptors_for_each(service, pos) \
for ((pos) = dvb_sit_service_descriptors_first(service); \
(pos); \
(pos) = dvb_sit_service_descriptors_next(service, pos))
/******************************** PRIVATE CODE ********************************/
static inline struct descriptor *
dvb_sit_section_descriptors_first(struct dvb_sit_section *sit)
{
if (sit->transmission_info_loop_length == 0)
return NULL;
return (struct descriptor *)
((uint8_t *) sit + sizeof(struct dvb_sit_section));
}
static inline struct descriptor *
dvb_sit_section_descriptors_next(struct dvb_sit_section *sit,
struct descriptor* pos)
{
return next_descriptor((uint8_t*) sit + sizeof(struct dvb_sit_section),
sit->transmission_info_loop_length,
pos);
}
static inline struct dvb_sit_service *
dvb_sit_section_services_first(struct dvb_sit_section *sit)
{
size_t pos = sizeof(struct dvb_sit_section) + sit->transmission_info_loop_length;
if (pos >= section_ext_length(&sit->head))
return NULL;
return (struct dvb_sit_service*) ((uint8_t *) sit + pos);
}
static inline struct dvb_sit_service *
dvb_sit_section_services_next(struct dvb_sit_section *sit,
struct dvb_sit_service *pos)
{
uint8_t *end = (uint8_t*) sit + section_ext_length(&sit->head);
uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_sit_service) +
pos->service_loop_length;
if (next >= end)
return NULL;
return (struct dvb_sit_service *) next;
}
static inline struct descriptor *
dvb_sit_service_descriptors_first(struct dvb_sit_service * t)
{
if (t->service_loop_length == 0)
return NULL;
return (struct descriptor *)
((uint8_t *) t + sizeof(struct dvb_sit_service));
}
static inline struct descriptor *
dvb_sit_service_descriptors_next(struct dvb_sit_service *t,
struct descriptor* pos)
{
return next_descriptor((uint8_t*) t + sizeof(struct dvb_sit_service),
t->service_loop_length,
pos);
}
#ifdef __cplusplus
}
#endif
#endif
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