libdvbv5: lib/include/libdvbv5/atsc_eit.h Source File

libdvbv5 1.28.1 Library to work with Digital TV devices on Linux

atsc_eit.h
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1/*
2 * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation version 2.1 of the License.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU Lesser General Public License for more details.
12 *
13 * You should have received a copy of the GNU Lesser General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
17 *
18 */
19
39#ifndef _ATSC_EIT_H
40#define _ATSC_EIT_H
41
42#include <stdint.h>
43#include <unistd.h> /* ssize_t */
44#include <time.h>
45
46#include <libdvbv5/atsc_header.h>
47
53#define ATSC_TABLE_EIT 0xCB
54
81 struct atsc_table_eit_event {
82 union {
83 uint16_t bitfield;
84 struct {
85 uint16_t event_id:14;
86 uint16_t one:2;
87 } __attribute__((packed));
88 } __attribute__((packed));
89 uint32_t start_time;
90 union {
91 uint32_t bitfield2;
92 struct {
93 uint32_t title_length:8;
94 uint32_t duration:20;
95 uint32_t etm:2;
96 uint32_t one2:2;
97 uint32_t :2;
98 } __attribute__((packed));
99 } __attribute__((packed));
100 struct dvb_desc *descriptor;
101 struct atsc_table_eit_event *next;
102 struct tm start;
103 uint16_t source_id;
104} __attribute__((packed));
105
121 union atsc_table_eit_desc_length {
122 uint16_t bitfield;
123 struct {
124 uint16_t desc_length:12;
125 uint16_t reserved:4;
126 } __attribute__((packed));
127} __attribute__((packed));
128
146 struct atsc_table_eit {
147 struct dvb_table_header header;
148 uint8_t protocol_version;
149 uint8_t events;
150 struct atsc_table_eit_event *event;
151} __attribute__((packed));
152
160#define atsc_eit_event_foreach(_event, _eit) \
161 if (_eit && _eit->event) \
162 for( struct atsc_table_eit_event *_event = _eit->event; _event; _event = _event->next ) \
163
164struct dvb_v5_fe_parms;
165
166#ifdef __cplusplus
167extern "C" {
168#endif
169
186ssize_t atsc_table_eit_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf,
187 ssize_t buflen, struct atsc_table_eit **table);
188
195 void atsc_table_eit_free(struct atsc_table_eit *table);
196
204 void atsc_table_eit_print(struct dvb_v5_fe_parms *parms,
205 struct atsc_table_eit *table);
206
215 void atsc_time(const uint32_t start_time, struct tm *tm);
216
217#ifdef __cplusplus
218}
219#endif
220
221#endif
atsc_header.h
Provides some common ATSC stuff.
atsc_time
void atsc_time(const uint32_t start_time, struct tm *tm)
Converts an ATSC EIT formatted timestamp into struct tm.
atsc_table_eit_init
ssize_t atsc_table_eit_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, struct atsc_table_eit **table)
Initializes and parses ATSC EIT table.
atsc_table_eit_free
void atsc_table_eit_free(struct atsc_table_eit *table)
Frees all data allocated by the ATSC EIT table parser.
atsc_table_eit_print
void atsc_table_eit_print(struct dvb_v5_fe_parms *parms, struct atsc_table_eit *table)
Prints the content of the ATSC EIT table.
atsc_table_eit_event
ATSC EIT event table.
Definition atsc_eit.h:81
atsc_table_eit_event::event_id
uint16_t event_id
Definition atsc_eit.h:85
atsc_table_eit_event::source_id
uint16_t source_id
Definition atsc_eit.h:103
atsc_table_eit_event::duration
uint32_t duration
Definition atsc_eit.h:94
atsc_table_eit_event::title_length
uint32_t title_length
Definition atsc_eit.h:93
atsc_table_eit_event::bitfield2
uint32_t bitfield2
Definition atsc_eit.h:91
atsc_table_eit_event::next
struct atsc_table_eit_event * next
Definition atsc_eit.h:101
atsc_table_eit_event::one2
uint32_t one2
Definition atsc_eit.h:96
atsc_table_eit_event::one
uint16_t one
Definition atsc_eit.h:86
atsc_table_eit_event::etm
uint32_t etm
Definition atsc_eit.h:95
atsc_table_eit_event::descriptor
struct dvb_desc * descriptor
Definition atsc_eit.h:100
atsc_table_eit_event::bitfield
uint16_t bitfield
Definition atsc_eit.h:83
atsc_table_eit_event::start_time
uint32_t start_time
Definition atsc_eit.h:89
atsc_table_eit_event::start
struct tm start
Definition atsc_eit.h:102
atsc_table_eit
ATSC EIT table.
Definition atsc_eit.h:146
atsc_table_eit::protocol_version
uint8_t protocol_version
Definition atsc_eit.h:148
atsc_table_eit::event
struct atsc_table_eit_event * event
Definition atsc_eit.h:150
atsc_table_eit::header
struct dvb_table_header header
Definition atsc_eit.h:147
atsc_table_eit::events
uint8_t events
Definition atsc_eit.h:149
dvb_desc
Linked list containing the several descriptors found on a MPEG-TS table.
Definition descriptors.h:117
dvb_table_header
Header of a MPEG-TS table.
Definition header.h:103
dvb_v5_fe_parms
Keeps data needed to handle the DVB frontend.
Definition dvb-fe.h:117
atsc_table_eit_desc_length
ATSC EIT descriptor length.
Definition atsc_eit.h:121
atsc_table_eit_desc_length::desc_length
uint16_t desc_length
Definition atsc_eit.h:124
atsc_table_eit_desc_length::bitfield
uint16_t bitfield
Definition atsc_eit.h:122
atsc_table_eit_desc_length::reserved
uint16_t reserved
Definition atsc_eit.h:125