/usr/include/libucsi/dvb/mosaic_descriptor.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 | /*
* 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_MOSAIC_DESCRIPTOR
#define _UCSI_DVB_MOSAIC_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
/**
* dvb_mosaic_descriptor structure.
*/
struct dvb_mosaic_descriptor {
struct descriptor d;
EBIT4(uint8_t mosaic_entry_point : 1; ,
uint8_t number_of_horiz_elementary_cells: 3; ,
uint8_t reserved : 1; ,
uint8_t number_of_vert_elementary_cells : 3; );
/* struct dvb_mosaic_info infos[] */
} __ucsi_packed;
/**
* An entry in the infos field of a dvb_mosaic_descriptor.
*/
struct dvb_mosaic_info {
EBIT3(uint16_t logical_cell_id : 6; ,
uint16_t reserved : 7; ,
uint16_t logical_cell_presentation_info : 3; );
uint8_t elementary_cell_field_length;
/* struct dvb_mosaic_elementary_cell_field fields[] */
/* struct dvb_mosaic_info_part2 part2 */
/* struct dvb_mosaic_linkage linkage */
} __ucsi_packed;
/**
* An entry in the fields field of a dvb_mosaic_info.
*/
struct dvb_mosaic_elementary_cell_field {
EBIT2(uint8_t reserved : 2; ,
uint8_t elementary_cell_id : 6; );
} __ucsi_packed;
/**
* Part2 of dvb_mosaic_info, following the variable length fields field.
*/
struct dvb_mosaic_info_part2 {
uint8_t cell_linkage_info;
} __ucsi_packed;
struct dvb_mosaic_linkage_01 {
uint16_t bouquet_id;
} __ucsi_packed;
struct dvb_mosaic_linkage_02 {
uint16_t original_network_id;
uint16_t transport_stream_id;
uint16_t service_id;
} __ucsi_packed;
struct dvb_mosaic_linkage_03 {
uint16_t original_network_id;
uint16_t transport_stream_id;
uint16_t service_id;
} __ucsi_packed;
struct dvb_mosaic_linkage_04 {
uint16_t original_network_id;
uint16_t transport_stream_id;
uint16_t service_id;
uint16_t event_id;
} __ucsi_packed;
/**
* Structure describing the linkage field of a dvb_mosaic_info
*/
struct dvb_mosaic_linkage {
union {
struct dvb_mosaic_linkage_01 linkage_01;
struct dvb_mosaic_linkage_02 linkage_02;
struct dvb_mosaic_linkage_03 linkage_03;
struct dvb_mosaic_linkage_04 linkage_04;
} u;
} __ucsi_packed;
/**
* Process a dvb_mosaic_descriptor.
*
* @param d Pointer to a generic descriptor structure.
*/
static inline struct dvb_mosaic_descriptor*
dvb_mosaic_descriptor_codec(struct descriptor* d)
{
uint8_t* buf = (uint8_t*) d + 2;
uint32_t pos = 0;
uint32_t len = d->len;
struct dvb_mosaic_descriptor * p =
(struct dvb_mosaic_descriptor *) d;
pos += (sizeof(struct dvb_mosaic_descriptor) - 2);
if (pos > len)
return NULL;
while(pos < len) {
struct dvb_mosaic_info *e =
(struct dvb_mosaic_info*) (buf+pos);
struct dvb_mosaic_info_part2 *e2;
if ((pos + sizeof(struct dvb_mosaic_info)) > len)
return NULL;
bswap16(buf + pos);
pos += sizeof(struct dvb_mosaic_info) +
e->elementary_cell_field_length;
if (pos > len)
return NULL;
e2 = (struct dvb_mosaic_info_part2*) (buf+pos);
pos += sizeof(struct dvb_mosaic_info_part2);
if (pos > len)
return NULL;
switch(e2->cell_linkage_info) {
case 0x01:
if ((pos + sizeof(struct dvb_mosaic_linkage_01)) > len)
return NULL;
bswap16(buf+pos);
pos += sizeof(struct dvb_mosaic_linkage_01);
break;
case 0x02:
if ((pos + sizeof(struct dvb_mosaic_linkage_02)) > len)
return NULL;
bswap16(buf+pos);
bswap16(buf+pos+2);
bswap16(buf+pos+4);
pos += sizeof(struct dvb_mosaic_linkage_02);
break;
case 0x03:
if ((pos + sizeof(struct dvb_mosaic_linkage_03)) > len)
return NULL;
bswap16(buf+pos);
bswap16(buf+pos+2);
bswap16(buf+pos+4);
pos += sizeof(struct dvb_mosaic_linkage_03);
break;
case 0x04:
if ((pos + sizeof(struct dvb_mosaic_linkage_04)) > len)
return NULL;
bswap16(buf+pos);
bswap16(buf+pos+2);
bswap16(buf+pos+4);
bswap16(buf+pos+6);
pos += sizeof(struct dvb_mosaic_linkage_04);
break;
}
}
return p;
}
/**
* Iterator over the infos field of a dvb_mosaic_descriptor.
*
* @param d dvb_mosaic_descriptor pointer.
* @param pos Variable containing a pointer to the current dvb_mosaic_info.
*/
#define dvb_mosaic_descriptor_infos_for_each(d, pos) \
for ((pos) = dvb_mosaic_descriptor_infos_first(d); \
(pos); \
(pos) = dvb_mosaic_descriptor_infos_next(d, pos))
/**
* Iterator over the fields field of a dvb_mosaic_info.
*
* @param info dvb_mosaic_info pointer.
* @param pos Variable containing a pointer to the current dvb_mosaic_elementary_cell_field.
*/
#define dvb_mosaic_info_fields_for_each(info, pos) \
for ((pos) = dvb_mosaic_info_fields_first(info); \
(pos); \
(pos) = dvb_mosaic_info_fields_next(info, pos))
/**
* Accessor for the second part of the dvb_mosaic_info structure.
*
* @param entry dvb_mosaic_info pointer.
* @return dvb_mosaic_info_part2 pointer.
*/
static inline struct dvb_mosaic_info_part2*
dvb_mosaic_info_part2(struct dvb_mosaic_info* entry)
{
return (struct dvb_mosaic_info_part2*)
((uint8_t*) entry + sizeof(struct dvb_mosaic_info) +
entry->elementary_cell_field_length);
}
/**
* Accessor for the linkage field a dvb_mosaic_info structure.
*
* @param entry dvb_mosaic_info_part2 pointer.
* @return dvb_mosaic_linkage pointer, or NULL on error.
*/
static inline struct dvb_mosaic_linkage*
dvb_mosaic_linkage(struct dvb_mosaic_info_part2* entry)
{
if ((entry->cell_linkage_info != 0x01) &&
(entry->cell_linkage_info != 0x02) &&
(entry->cell_linkage_info != 0x03) &&
(entry->cell_linkage_info != 0x04))
return NULL;
return (struct dvb_mosaic_linkage*)
((uint8_t*) entry + sizeof(struct dvb_mosaic_info_part2));
}
/******************************** PRIVATE CODE ********************************/
static inline struct dvb_mosaic_info*
dvb_mosaic_descriptor_infos_first(struct dvb_mosaic_descriptor *d)
{
if (d->d.len == 1)
return NULL;
return (struct dvb_mosaic_info *)
((uint8_t*) d + sizeof(struct dvb_mosaic_descriptor));
}
static inline struct dvb_mosaic_info*
dvb_mosaic_descriptor_infos_next(struct dvb_mosaic_descriptor *d,
struct dvb_mosaic_info *pos)
{
struct dvb_mosaic_info_part2* part2 = dvb_mosaic_info_part2(pos);
uint8_t *end = (uint8_t*) d + 2 + d->d.len;
uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_mosaic_info) +
pos->elementary_cell_field_length +
sizeof(struct dvb_mosaic_info_part2);
if (part2->cell_linkage_info == 0x01)
next += sizeof(struct dvb_mosaic_linkage_01);
else if (part2->cell_linkage_info == 0x02)
next += sizeof(struct dvb_mosaic_linkage_02);
else if (part2->cell_linkage_info == 0x03)
next += sizeof(struct dvb_mosaic_linkage_03);
else if (part2->cell_linkage_info == 0x04)
next += sizeof(struct dvb_mosaic_linkage_04);
if (next >= end)
return NULL;
return (struct dvb_mosaic_info *) next;
}
static inline struct dvb_mosaic_elementary_cell_field*
dvb_mosaic_info_fields_first(struct dvb_mosaic_info *d)
{
if (d->elementary_cell_field_length == 0)
return NULL;
return (struct dvb_mosaic_elementary_cell_field*)
((uint8_t*) d + sizeof(struct dvb_mosaic_info));
}
static inline struct dvb_mosaic_elementary_cell_field*
dvb_mosaic_info_fields_next(struct dvb_mosaic_info *d,
struct dvb_mosaic_elementary_cell_field* pos)
{
uint8_t *end = (uint8_t*) d + sizeof(struct dvb_mosaic_info) +
d->elementary_cell_field_length;
uint8_t *next = (uint8_t *) pos +
sizeof(struct dvb_mosaic_elementary_cell_field);
if (next >= end)
return NULL;
return (struct dvb_mosaic_elementary_cell_field *) next;
}
#ifdef __cplusplus
}
#endif
#endif
|