inear/dvb-tools/lib/libucsi/dvb/rst_section.c

/*
 * 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
 */

#include <libucsi/dvb/rst_section.h>

struct dvb_rst_section * dvb_rst_section_codec(struct section *section)
{
	uint8_t * buf = (uint8_t *) section;
	size_t pos = sizeof(struct section);
	size_t len = section_length(section);
	struct dvb_rst_section * ret = (struct dvb_rst_section *) section;

	while (pos < len) {
		if ((pos + sizeof(struct dvb_rst_status)) > len)
			return NULL;

		bswap16(buf + pos);
		bswap16(buf + pos + 2);
		bswap16(buf + pos + 4);
		bswap16(buf + pos + 6);

		pos += sizeof(struct dvb_rst_status);
	}

	if (pos != len)
		return NULL;

	return ret;
}