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82 lines
2.2 KiB
82 lines
2.2 KiB
/*
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* section and descriptor parser
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*
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* Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
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* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.net)
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* Copyright (C) 2008 Patrick Boettcher (pb@linuxtv.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef _UCSI_MPEG_DATAGRAM_SECTION_H
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#define _UCSI_MPEG_DATAGRAM_SECTION_H 1
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include <libucsi/section.h>
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/**
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* datagram_section structure.
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*/
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struct datagram_section {
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struct section head;
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uint8_t MAC_address_6;
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uint8_t MAC_address_5;
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EBIT5(uint8_t reserved : 2; ,
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uint8_t payload_scrambling_control : 2; ,
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uint8_t address_scrambling_control : 2; ,
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uint8_t LLC_SNAP_flag : 1; ,
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uint8_t current_next_indicator : 1; );
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uint8_t section_number;
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uint8_t last_section_number;
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uint8_t MAC_address_4;
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uint8_t MAC_address_3;
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uint8_t MAC_address_2;
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uint8_t MAC_address_1;
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/* LLC_SNAP or IP-data */
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/* if last section stuffing */
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/* CRC */
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} __ucsi_packed;
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/**
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*/
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static inline struct datagram_section *datagram_section_codec(struct section *section)
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{
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/* something to do here ? */
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return (struct datagram_section *) section;
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}
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static inline uint8_t *datagram_section_ip_data(struct datagram_section *d)
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{
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return (uint8_t *) d + sizeof(struct section) + 2 + 1 + 1 + 1 + 4;
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}
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static inline size_t datagram_section_ip_data_length(struct datagram_section *d)
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{
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return section_length(&d->head) - (sizeof(struct section) + 2 + 1 + 1 + 1 + 4) - CRC_SIZE;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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