atsc_eit.h

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/*
 * Copyright (c) 2013 - Andre Roth <neolynx@gmail.com>
 *
 * This program 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 version 2.1 of the License.
 *
 * This program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 *
 */
 
#ifndef _ATSC_EIT_H
#define _ATSC_EIT_H
 
#include <stdint.h>
#include <unistd.h> /* ssize_t */
#include <time.h>
 
#include <libdvbv5/atsc_header.h>
 
#define ATSC_TABLE_EIT        0xCB
 
struct atsc_table_eit_event {
        union {
                uint16_t bitfield;
                struct {
                  uint16_t event_id:14;
                  uint16_t one:2;
                } __attribute__((packed));
        } __attribute__((packed));
        uint32_t start_time;
        union {
                uint32_t bitfield2;
                struct {
                        uint32_t title_length:8;
                        uint32_t duration:20;
                        uint32_t etm:2;
                        uint32_t one2:2;
                        uint32_t :2;
                } __attribute__((packed));
        } __attribute__((packed));
        struct dvb_desc *descriptor;
        struct atsc_table_eit_event *next;
        struct tm start;
        uint16_t source_id;
} __attribute__((packed));
 
union atsc_table_eit_desc_length {
        uint16_t bitfield;
        struct {
                uint16_t desc_length:12;
                uint16_t reserved:4;
        } __attribute__((packed));
} __attribute__((packed));
 
struct atsc_table_eit {
        struct dvb_table_header header;
        uint8_t  protocol_version;
        uint8_t events;
        struct atsc_table_eit_event *event;
} __attribute__((packed));
 
#define atsc_eit_event_foreach(_event, _eit) \
        if (_eit && _eit->event) \
                for( struct atsc_table_eit_event *_event = _eit->event; _event; _event = _event->next ) \
 
struct dvb_v5_fe_parms;
 
#ifdef __cplusplus
extern "C" {
#endif
 
ssize_t atsc_table_eit_init(struct dvb_v5_fe_parms *parms, const uint8_t *buf,
                            ssize_t buflen, struct atsc_table_eit **table);
 
void atsc_table_eit_free(struct atsc_table_eit *table);
 
void atsc_table_eit_print(struct dvb_v5_fe_parms *parms,
                          struct atsc_table_eit *table);
 
void atsc_time(const uint32_t start_time, struct tm *tm);
 
#ifdef __cplusplus
}
#endif
 
#endif