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

libdvbv5 1.32.0 Library to work with Digital TV devices on Linux

desc_logical_channel.h
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1/*
2 * Copyright (c) 2013 - Mauro Carvalho Chehab <mchehab@kernel.org>
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 * Described on IEC/CENELEC DS/EN 62216-1:2011
19 *
20 * I couldn't find the original version, so I used what's there at:
21 * http://tdt.telecom.pt/recursos/apresentacoes/Signalling Specifications for DTT deployment in Portugal.pdf
22 */
23
40
41#ifndef _LCN_DESC_H
42#define _LCN_DESC_H
43
44#include <libdvbv5/descriptors.h>
45
55
56 struct dvb_desc_logical_channel_number {
57 uint16_t service_id;
58 union {
59 uint16_t bitfield;
60 struct {
61 uint16_t logical_channel_number:10;
62 uint16_t reserved:5;
63 uint16_t visible_service_flag:1;
64 } __attribute__((packed));
65 } __attribute__((packed));
66} __attribute__((packed));
67
78 struct dvb_desc_logical_channel {
79 uint8_t type;
80 uint8_t length;
81 struct dvb_desc *next;
82
83 struct dvb_desc_logical_channel_number *lcn;
84} __attribute__((packed));
85
86struct dvb_v5_fe_parms;
87
88#ifdef __cplusplus
89extern "C" {
90#endif
91
107 int dvb_desc_logical_channel_init(struct dvb_v5_fe_parms *parms,
108 const uint8_t *buf, struct dvb_desc *desc);
109
117 void dvb_desc_logical_channel_print(struct dvb_v5_fe_parms *parms,
118 const struct dvb_desc *desc);
119
126 void dvb_desc_logical_channel_free(struct dvb_desc *desc);
127
128#ifdef __cplusplus
129}
130#endif
131
132#endif
descriptors.h
Provides a way to handle MPEG-TS descriptors found on Digital TV streams.
dvb_desc_logical_channel_print
void dvb_desc_logical_channel_print(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc)
Prints the content of the logical channel number descriptor.
dvb_desc_logical_channel_free
void dvb_desc_logical_channel_free(struct dvb_desc *desc)
Frees all data allocated by the logical channel number descriptor.
dvb_desc_logical_channel_init
int dvb_desc_logical_channel_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc)
Initializes and parses the logical channel number descriptor.
dvb_desc_logical_channel_number
Structure containing the logical channel number entires.
Definition desc_logical_channel.h:56
dvb_desc_logical_channel_number::logical_channel_number
uint16_t logical_channel_number
Definition desc_logical_channel.h:61
dvb_desc_logical_channel_number::bitfield
uint16_t bitfield
Definition desc_logical_channel.h:59
dvb_desc_logical_channel_number::service_id
uint16_t service_id
Definition desc_logical_channel.h:57
dvb_desc_logical_channel_number::reserved
uint16_t reserved
Definition desc_logical_channel.h:62
dvb_desc_logical_channel_number::visible_service_flag
uint16_t visible_service_flag
Definition desc_logical_channel.h:63
dvb_desc_logical_channel
Structure containing the logical channel number descriptor.
Definition desc_logical_channel.h:78
dvb_desc_logical_channel::lcn
struct dvb_desc_logical_channel_number * lcn
Definition desc_logical_channel.h:83
dvb_desc_logical_channel::type
uint8_t type
Definition desc_logical_channel.h:79
dvb_desc_logical_channel::length
uint8_t length
Definition desc_logical_channel.h:80
dvb_desc_logical_channel::next
struct dvb_desc * next
Definition desc_logical_channel.h:81
dvb_desc
Linked list containing the several descriptors found on a MPEG-TS table.
Definition descriptors.h:117
dvb_v5_fe_parms
Keeps data needed to handle the DVB frontend.
Definition dvb-fe.h:117