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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_TELEPHONE_DESCRIPTOR
#define _UCSI_DVB_TELEPHONE_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
/**
* dvb_telephone_descriptor stucture.
*/
struct dvb_telephone_descriptor {
struct descriptor d;
EBIT3(uint8_t reserved_1 : 2; ,
uint8_t foreign_availability : 1; ,
uint8_t connection_type : 5; );
EBIT4(uint8_t reserved_2 : 1; ,
uint8_t country_prefix_length : 2; ,
uint8_t international_area_code_length : 3; ,
uint8_t operator_code_length : 2; );
EBIT3(uint8_t reserved_3 : 1; ,
uint8_t national_area_code_length : 3; ,
uint8_t core_number_length : 4; );
/* uint8_t country_prefix[] */
/* uint8_t international_area_code[] */
/* uint8_t operator_code[] */
/* uint8_t national_area_code[] */
/* uint8_t core_number[] */
} __ucsi_packed;
/**
* Process a dvb_telephone_descriptor.
*
* @param d Generic descriptor.
* @return dvb_telephone_descriptor pointer, or NULL on error.
*/
static inline struct dvb_telephone_descriptor*
dvb_telephone_descriptor_codec(struct descriptor* d)
{
struct dvb_telephone_descriptor* p =
(struct dvb_telephone_descriptor*) d;
uint32_t pos = sizeof(struct dvb_telephone_descriptor) - 2;
uint32_t len = d->len;
if (pos > len)
return NULL;
pos += p->country_prefix_length +
p->international_area_code_length +
p->operator_code_length +
p->national_area_code_length +
p->core_number_length;
if (pos != len)
return NULL;
return p;
}
/**
* Retrieve pointer to country_prefix field of a dvb_telephone_descriptor.
*
* @param d dvb_telephone_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint8_t*
dvb_telephone_descriptor_country_prefix(struct dvb_telephone_descriptor* d)
{
return (uint8_t*) d + sizeof(struct dvb_telephone_descriptor);
}
/**
* Retrieve pointer to international_area_code field of a dvb_telephone_descriptor.
*
* @param d dvb_telephone_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint8_t*
dvb_telephone_descriptor_international_area_code(struct dvb_telephone_descriptor* d)
{
return dvb_telephone_descriptor_country_prefix(d) + d->country_prefix_length;
}
/**
* Retrieve pointer to operator_code field of a dvb_telephone_descriptor.
*
* @param d dvb_telephone_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint8_t*
dvb_telephone_descriptor_operator_code(struct dvb_telephone_descriptor* d)
{
return dvb_telephone_descriptor_international_area_code(d) + d->international_area_code_length;
}
/**
* Retrieve pointer to national_area_code field of a dvb_telephone_descriptor.
*
* @param d dvb_telephone_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint8_t*
dvb_telephone_descriptor_national_area_code(struct dvb_telephone_descriptor* d)
{
return dvb_telephone_descriptor_operator_code(d) + d->operator_code_length;
}
/**
* Retrieve pointer to core_number field of a dvb_telephone_descriptor.
*
* @param d dvb_telephone_descriptor pointer.
* @return Pointer to the field.
*/
static inline uint8_t*
dvb_telephone_descriptor_core_number(struct dvb_telephone_descriptor* d)
{
return dvb_telephone_descriptor_national_area_code(d) + d->national_area_code_length;
}
#ifdef __cplusplus
}
#endif
#endif
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