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/*
* 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_RST_SECTION_H
#define _UCSI_DVB_RST_SECTION_H 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/section.h>
/**
* dvb_rst_section structure.
*/
struct dvb_rst_section {
struct section head;
/* struct dvb_rst_status statuses[] */
};
/**
* An entry in the statuses field of a dvb_rst_section structure.
*/
struct dvb_rst_status {
uint16_t transport_stream_id;
uint16_t original_network_id;
uint16_t service_id;
uint16_t event_id;
EBIT2(uint8_t reserved : 5; ,
uint8_t running_status : 3; );
};
/**
* Process a dvb_rst_section.
*
* @param section Pointer to a generic section strcuture.
* @return dvb_rst_section pointer, or NULL on error.
*/
struct dvb_rst_section *dvb_rst_section_codec(struct section *section);
/**
* Iterator for entries in the statuses field of a dvb_rst_section.
*
* @param rst dvb_rst_section pointer.
* @param pos Variable containing a pointer to the current dvb_rst_status.
*/
#define dvb_rst_section_statuses_for_each(rst, pos) \
for ((pos) = dvb_rst_section_statuses_first(rst); \
(pos); \
(pos) = dvb_rst_section_statuses_next(rst, pos))
/******************************** PRIVATE CODE ********************************/
static inline struct dvb_rst_status *
dvb_rst_section_statuses_first(struct dvb_rst_section *rst)
{
size_t pos = sizeof(struct dvb_rst_section);
if (pos >= section_length(&rst->head))
return NULL;
return (struct dvb_rst_status*) ((uint8_t *) rst + pos);
}
static inline struct dvb_rst_status *
dvb_rst_section_statuses_next(struct dvb_rst_section * rst,
struct dvb_rst_status * pos)
{
uint8_t *end = (uint8_t*) rst + section_length(&rst->head);
uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_rst_status);
if (next >= end)
return NULL;
return (struct dvb_rst_status *) next;
}
#ifdef __cplusplus
}
#endif
#endif
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