You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
198 lines
5.6 KiB
198 lines
5.6 KiB
/*
|
|
* 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_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR
|
|
#define _UCSI_DVB_MULTILINGUAL_SERVICE_NAME_DESCRIPTOR 1
|
|
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
|
|
#include <libucsi/descriptor.h>
|
|
#include <libucsi/endianops.h>
|
|
#include <libucsi/types.h>
|
|
|
|
/**
|
|
* dvb_multilingual_service_name_descriptor structure.
|
|
*/
|
|
struct dvb_multilingual_service_name_descriptor {
|
|
struct descriptor d;
|
|
|
|
/* struct dvb_multilingual_service_name names[] */
|
|
} __ucsi_packed;
|
|
|
|
/**
|
|
* An entry in the service_names field of a dvb_multilingual_service_name_descriptor.
|
|
*/
|
|
struct dvb_multilingual_service_name {
|
|
iso639lang_t language_code;
|
|
uint8_t service_provider_name_length;
|
|
/* uint8_t service_provider_name[] */
|
|
/* struct dvb_multilingual_service_name_part2 part2 */
|
|
} __ucsi_packed;
|
|
|
|
/**
|
|
* Second part of a dvb_multilingual_service_name following the variable length
|
|
* service_provider_name.
|
|
*/
|
|
struct dvb_multilingual_service_name_part2 {
|
|
uint8_t service_name_length;
|
|
/* uint8_t service_name[] */
|
|
} __ucsi_packed;
|
|
|
|
/**
|
|
* Process a dvb_multilingual_service_name_descriptor.
|
|
*
|
|
* @param d Generic descriptor pointer.
|
|
* @return dvb_multilingual_service_name_descriptor pointer, or NULL on error.
|
|
*/
|
|
static inline struct dvb_multilingual_service_name_descriptor*
|
|
dvb_multilingual_service_name_descriptor_codec(struct descriptor* d)
|
|
{
|
|
uint8_t* buf = (uint8_t*) d + 2;
|
|
uint32_t pos = 0;
|
|
uint32_t len = d->len;
|
|
|
|
while(pos < len) {
|
|
struct dvb_multilingual_service_name *e =
|
|
(struct dvb_multilingual_service_name*) (buf+pos);
|
|
struct dvb_multilingual_service_name_part2 *e2;
|
|
|
|
pos += sizeof(struct dvb_multilingual_service_name);
|
|
|
|
if (pos > len)
|
|
return NULL;
|
|
|
|
pos += e->service_provider_name_length;
|
|
|
|
if (pos > len)
|
|
return NULL;
|
|
|
|
e2 = (struct dvb_multilingual_service_name_part2*) (buf+pos);
|
|
|
|
pos += sizeof(struct dvb_multilingual_service_name_part2);
|
|
|
|
if (pos > len)
|
|
return NULL;
|
|
|
|
pos += e2->service_name_length;
|
|
|
|
if (pos > len)
|
|
return NULL;
|
|
}
|
|
|
|
return (struct dvb_multilingual_service_name_descriptor*) d;
|
|
}
|
|
|
|
/**
|
|
* Iterator for entries in the service_name field of a dvb_multilingual_service_name_descriptor.
|
|
*
|
|
* @param d dvb_multilingual_service_name_descriptor pointer,
|
|
* @param pos Variable containing pointer to the current dvb_multilingual_service_name.
|
|
*/
|
|
#define dvb_multilingual_service_name_descriptor_names_for_each(d, pos) \
|
|
for ((pos) = dvb_multilingual_service_name_descriptor_names_first(d); \
|
|
(pos); \
|
|
(pos) = dvb_multilingual_service_name_descriptor_names_next(d, pos))
|
|
|
|
/**
|
|
* Accessor for the service_provider_name field of a dvb_multilingual_service_name.
|
|
*
|
|
* @param e dvb_multilingual_service_name pointer.
|
|
* @return Pointer to the field.
|
|
*/
|
|
static inline uint8_t *
|
|
dvb_multilingual_service_name_service_provider_name(struct dvb_multilingual_service_name *e)
|
|
{
|
|
return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name);
|
|
}
|
|
|
|
/**
|
|
* Accessor for the dvb_multilingual_service_name_part2 - second part of a
|
|
* dvb_multilingual_service_name following the service_name field.
|
|
*
|
|
* @param e dvb_multilingual_service_name Pointer.
|
|
* @return dvb_multilingual_service_name_part2 pointer.
|
|
*/
|
|
static inline struct dvb_multilingual_service_name_part2 *
|
|
dvb_multilingual_service_name_part2(struct dvb_multilingual_service_name *e)
|
|
{
|
|
return (struct dvb_multilingual_service_name_part2 *)
|
|
((uint8_t *) e + sizeof(struct dvb_multilingual_service_name) +
|
|
e->service_provider_name_length);
|
|
}
|
|
|
|
/**
|
|
* Accessor for the service_name field of a dvb_multilingual_service_name_part2.
|
|
*
|
|
* @param e dvb_multilingual_service_name_part2 pointer.
|
|
* @return Pointer to the field.
|
|
*/
|
|
static inline uint8_t *
|
|
dvb_multilingual_service_name_service_name(struct dvb_multilingual_service_name_part2 *e)
|
|
{
|
|
return (uint8_t *) e + sizeof(struct dvb_multilingual_service_name_part2);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/******************************** PRIVATE CODE ********************************/
|
|
static inline struct dvb_multilingual_service_name*
|
|
dvb_multilingual_service_name_descriptor_names_first(struct dvb_multilingual_service_name_descriptor *d)
|
|
{
|
|
if (d->d.len == 0)
|
|
return NULL;
|
|
|
|
return (struct dvb_multilingual_service_name *)
|
|
((uint8_t*) d + sizeof(struct dvb_multilingual_service_name_descriptor));
|
|
}
|
|
|
|
static inline struct dvb_multilingual_service_name*
|
|
dvb_multilingual_service_name_descriptor_names_next(struct dvb_multilingual_service_name_descriptor *d,
|
|
struct dvb_multilingual_service_name *pos)
|
|
{
|
|
struct dvb_multilingual_service_name_part2 * part2 =
|
|
dvb_multilingual_service_name_part2(pos);
|
|
uint8_t *end = (uint8_t*) d + 2 + d->d.len;
|
|
uint8_t *next = (uint8_t *) part2+
|
|
sizeof(struct dvb_multilingual_service_name_part2) +
|
|
part2->service_name_length;
|
|
|
|
if (next >= end)
|
|
return NULL;
|
|
|
|
return (struct dvb_multilingual_service_name *) next;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|