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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)
* Copyright (C) 2006 Stephane Este-Gracias (sestegra@free.fr)
*
* 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_TARGET_IP_SLASH_DESCRIPTOR
#define _UCSI_DVB_TARGET_IP_SLASH_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/types.h>
/**
* dvb_target_ip_slash_descriptor structure.
*/
struct dvb_target_ip_slash_descriptor {
struct descriptor d;
/* struct dvb_ipv4_slash ipv4_slash[] */
} __ucsi_packed;
/**
* An entry in the ipv4_slash field of a dvb_target_ip_slash_descriptor.
*/
struct dvb_ipv4_slash {
uint8_t ipv4_addr[4];
uint8_t ipv4_slash;
} __ucsi_packed;
/**
* Process a dvb_target_ip_slash_descriptor.
*
* @param d Generic descriptor structure pointer.
* @return dvb_target_ip_slash_descriptor pointer, or NULL on error.
*/
static inline struct dvb_target_ip_slash_descriptor*
dvb_target_ip_slash_descriptor_codec(struct descriptor* d)
{
uint32_t len = d->len;
if (len % sizeof(struct dvb_ipv4_slash))
return NULL;
return (struct dvb_target_ip_slash_descriptor*) d;
}
/**
* Iterator for entries in the ipv4_slash field of a dvb_target_ip_slash_descriptor.
*
* @param d dvb_target_ip_slash_descriptor pointer.
* @param pos Variable containing a pointer to the current dvb_ipv4_slash.
*/
#define dvb_target_ip_slash_descriptor_ipv4_slash_for_each(d, pos) \
for ((pos) = dvb_target_ip_slash_descriptor_ipv4_slash_first(d); \
(pos); \
(pos) = dvb_target_ip_slash_descriptor_ipv4_slash_next(d, pos))
/******************************** PRIVATE CODE ********************************/
static inline struct dvb_ipv4_slash*
dvb_target_ip_slash_descriptor_ipv4_slash_first(struct dvb_target_ip_slash_descriptor *d)
{
if (d->d.len == 0)
return NULL;
return (struct dvb_ipv4_slash *)
((uint8_t*) d + sizeof(struct dvb_target_ip_slash_descriptor));
}
static inline struct dvb_ipv4_slash*
dvb_target_ip_slash_descriptor_ipv4_slash_next(struct dvb_target_ip_slash_descriptor *d,
struct dvb_ipv4_slash *pos)
{
uint8_t *end = (uint8_t*) d + 2 + d->d.len;
uint8_t *next = (uint8_t *) pos + sizeof(struct dvb_ipv4_slash);
if (next >= end)
return NULL;
return (struct dvb_ipv4_slash *) next;
}
#ifdef __cplusplus
}
#endif
#endif
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