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111 lines
3.3 KiB
111 lines
3.3 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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*
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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_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR
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#define _UCSI_DVB_RNT_RAR_OVER_DVB_STREAM_DESCRIPTOR 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/descriptor.h>
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#include <libucsi/endianops.h>
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/**
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* dvb_rnt_rar_over_dvb_stream_descriptor structure.
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*/
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struct dvb_rnt_rar_over_dvb_stream_descriptor {
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struct descriptor d;
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dvbdate_t first_valid_date;
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dvbdate_t last_valid_date;
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EBIT3(uint8_t weighting : 6; ,
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uint8_t complete_flag : 1; ,
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uint8_t scheduled_flag : 1; );
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uint16_t transport_stream_id;
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uint16_t original_network_id;
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uint16_t service_id;
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uint8_t component_tag;
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/* struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info scheduled_info */
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} __ucsi_packed;
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/**
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* The scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor (only appears
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* if scheduled_flag = 1).
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*/
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struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info {
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dvbdate_t download_start_time;
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uint8_t download_period_duration;
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uint8_t download_cycle_time;
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} __ucsi_packed;
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/**
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* Process a dvb_rnt_rar_over_dvb_stream_descriptor.
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*
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* @param d Generic descriptor pointer.
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* @return dvb_rnt_rar_over_dvb_stream_descriptor pointer, or NULL on error.
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*/
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static inline struct dvb_rnt_rar_over_dvb_stream_descriptor*
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dvb_rnt_rar_over_dvb_stream_descriptor_codec(struct descriptor* d)
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{
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uint8_t *buf = (uint8_t*) d;
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uint32_t len = d->len + 2;
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struct dvb_rnt_rar_over_dvb_stream_descriptor *ret =
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(struct dvb_rnt_rar_over_dvb_stream_descriptor *) buf;
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if (len < sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor))
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return NULL;
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bswap16(buf + 13);
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bswap16(buf + 15);
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bswap16(buf + 17);
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if (ret->scheduled_flag == 1) {
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if (len < (sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor)+
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sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info)))
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return NULL;
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}
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return ret;
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}
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/**
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* Accessor for the scheduled_info field of a dvb_rnt_rar_over_dvb_stream_descriptor.
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*
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* @param d dvb_rnt_rar_over_dvb_stream_descriptor pointer.
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* @return Pointer, or NULL on error.
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*/
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static inline struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info*
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dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info(struct dvb_rnt_rar_over_dvb_stream_descriptor *d)
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{
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if (d->scheduled_flag != 1)
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return NULL;
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return (struct dvb_rnt_rar_over_dvb_stream_descriptor_scheduled_info*)
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((uint8_t*) d + sizeof(struct dvb_rnt_rar_over_dvb_stream_descriptor));
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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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