/usr/include/libucsi/dvb/bat_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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 | /*
* 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_BAT_SECTION_H
#define _UCSI_DVB_BAT_SECTION_H 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/section.h>
/**
* dvb_bat_section structure.
*/
struct dvb_bat_section {
struct section_ext head;
EBIT2(uint16_t reserved_1 : 4; ,
uint16_t bouquet_descriptors_length :12; );
/* struct descriptor descriptors[] */
/* struct dvb_bat_section_part2 part2 */
};
/**
* Second part of a dvb_bat_section, following the variable length descriptors field.
*/
struct dvb_bat_section_part2 {
EBIT2(uint16_t reserved_2 : 4; ,
uint16_t transport_stream_loop_length :12; );
/* struct dvb_bat_transport transports[] */
} __ucsi_packed;
/**
* An entry in the transports field of a dvb_bat_section_part2.
*/
struct dvb_bat_transport {
uint16_t transport_stream_id;
uint16_t original_network_id;
EBIT2(uint16_t reserved : 4; ,
uint16_t transport_descriptors_length :12; );
/* struct descriptor descriptors[] */
};
/**
* Process a dvb_bat_section.
*
* @param section Generic section pointer.
* @return dvb_bat_section pointer, or NULL on error.
*/
struct dvb_bat_section *dvb_bat_section_codec(struct section_ext *section);
/**
* Accessor for the bouquet_id field of a BAT.
*
* @param bat BAT pointer.
* @return The bouquet_id.
*/
static inline uint16_t dvb_bat_section_bouquet_id(struct dvb_bat_section *bat)
{
return bat->head.table_id_ext;
}
/**
* Iterator for the descriptors field in a dvb_bat_section.
*
* @param bat dvb_bat_section pointer.
* @param pos Variable containing a pointer to the current descriptor.
*/
#define dvb_bat_section_descriptors_for_each(bat, pos) \
for ((pos) = dvb_bat_section_descriptors_first(bat); \
(pos); \
(pos) = dvb_bat_section_descriptors_next(bat, pos))
/**
* Accessor for the second part of a dvb_bat_section.
*
* @param bat dvb_bat_section pointer.
* @return dvb_bat_section_part2 pointer.
*/
static inline struct dvb_bat_section_part2 *
dvb_bat_section_part2(struct dvb_bat_section *bat)
{
return (struct dvb_bat_section_part2 *)
((uint8_t*) bat +
sizeof(struct dvb_bat_section) +
bat->bouquet_descriptors_length);
}
/**
* Iterator for the transports field of a dvb_bat_section_part2.
*
* @param part2 dvb_bat_section_part2 pointer.
* @param pos Variable containing a pointer to the current dvb_bat_transport.
*/
#define dvb_bat_section_transports_for_each(part2, pos) \
for ((pos) = dvb_bat_section_transports_first(part2); \
(pos); \
(pos) = dvb_bat_section_transports_next(part2, pos))
/**
* Iterator for the descriptors field of a dvb_bat_transport.
*
* @param transport dvb_bat_transport pointer.
* @param pos Variable containing a pointer to the current descriptor.
*/
#define dvb_bat_transport_descriptors_for_each(transport, pos) \
for ((pos) = dvb_bat_transport_descriptors_first(transport); \
(pos); \
(pos) = dvb_bat_transport_descriptors_next(transport, pos))
/******************************** PRIVATE CODE ********************************/
static inline struct descriptor *
dvb_bat_section_descriptors_first(struct dvb_bat_section *bat)
{
if (bat->bouquet_descriptors_length == 0)
return NULL;
return (struct descriptor *)
((uint8_t *) bat + sizeof(struct dvb_bat_section));
}
static inline struct descriptor *
dvb_bat_section_descriptors_next(struct dvb_bat_section *bat,
struct descriptor* pos)
{
return next_descriptor((uint8_t*) bat + sizeof(struct dvb_bat_section),
bat->bouquet_descriptors_length,
pos);
}
static inline struct dvb_bat_transport *
dvb_bat_section_transports_first(struct dvb_bat_section_part2 *part2)
{
if (part2->transport_stream_loop_length == 0)
return NULL;
return (struct dvb_bat_transport *)
((uint8_t *) part2 + sizeof(struct dvb_bat_section_part2));
}
static inline struct dvb_bat_transport *
dvb_bat_section_transports_next(struct dvb_bat_section_part2 *part2,
struct dvb_bat_transport *pos)
{
uint8_t *end = (uint8_t*) part2 + sizeof(struct dvb_bat_section_part2) +
part2->transport_stream_loop_length;
uint8_t *next = (uint8_t*) pos + sizeof(struct dvb_bat_transport) +
pos->transport_descriptors_length;
if (next >= end)
return NULL;
return (struct dvb_bat_transport *) next;
}
static inline struct descriptor *
dvb_bat_transport_descriptors_first(struct dvb_bat_transport *t)
{
if (t->transport_descriptors_length == 0)
return NULL;
return (struct descriptor *)
((uint8_t*)t + sizeof(struct dvb_bat_transport));
}
static inline struct descriptor *
dvb_bat_transport_descriptors_next(struct dvb_bat_transport *t,
struct descriptor* pos)
{
return next_descriptor((uint8_t*) t + sizeof(struct dvb_bat_transport),
t->transport_descriptors_length,
pos);
}
#ifdef __cplusplus
}
#endif
#endif
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