header.h

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/*
 * Copyright (c) 2011-2012 - Mauro Carvalho Chehab
 * Copyright (c) 2012 - 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
 *
 * Described at ISO/IEC 13818-1
 */
 
#ifndef _HEADER_H
#define _HEADER_H
 
#include <stdint.h>
#include <unistd.h> /* ssize_t */


struct dvb_ts_packet_header {
        uint8_t  sync_byte;
        union {
                uint16_t bitfield;
                struct {
                        uint16_t pid:13;
                        uint16_t transport_priority:1;
                        uint16_t payload_unit_start_indicator:1;
                        uint16_t transport_error_indicator:1;
                } __attribute__((packed));
        } __attribute__((packed));
        uint8_t continuity_counter:4;
        uint8_t adaptation_field_control:2;
        uint8_t transport_scrambling_control:2;
 
        /* Only if adaptation_field_control > 1 */
        uint8_t adaptation_field_length;
        /* Only if adaptation_field_length >= 1 */
        struct {
                uint8_t extension:1;
                uint8_t private_data:1;
                uint8_t splicing_point:1;
                uint8_t OPCR:1;
                uint8_t PCR:1;
                uint8_t priority:1;
                uint8_t random_access:1;
                uint8_t discontinued:1;
        } __attribute__((packed));
} __attribute__((packed));

struct dvb_table_header {
        uint8_t  table_id;
        union {
                uint16_t bitfield;
                struct {
                        uint16_t section_length:12;
                        uint8_t  one:2;
                        uint8_t  zero:1;
                        uint8_t  syntax:1;
                } __attribute__((packed));
        } __attribute__((packed));
        uint16_t id;                  /* TS ID */
        uint8_t  current_next:1;
        uint8_t  version:5;
        uint8_t  one2:2;
 
        uint8_t  section_id;          /* section_number */
        uint8_t  last_section;              /* last_section_number */
} __attribute__((packed));
 
struct dvb_v5_fe_parms;
 
#ifdef __cplusplus
extern "C" {
#endif

void dvb_table_header_init (struct dvb_table_header *header);
void dvb_table_header_print(struct dvb_v5_fe_parms *parms,
                            const struct dvb_table_header *header);
 
#ifdef __cplusplus
}
#endif
 
#endif