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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_ATSC_DCC_DEPARTING_REQUEST_DESCRIPTOR
#define _UCSI_ATSC_DCC_DEPARTING_REQUEST_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
enum atsc_dcc_departing_request_type {
DCC_DEPART_TYPE_IMMEDIATE = 0x01,
DCC_DEPART_TYPE_DEFER_10SEC = 0x02,
DCC_DEPART_TYPE_DEFER = 0x03,
};
/**
* atsc_dcc_departing_request_descriptor structure.
*/
struct atsc_dcc_departing_request_descriptor {
struct descriptor d;
uint8_t dcc_departing_request_type;
uint8_t dcc_departing_request_text_length;
/* struct atsc_text text[] */
} __ucsi_packed;
/**
* Process an atsc_dcc_departing_request_descriptor.
*
* @param d Generic descriptor pointer.
* @return atsc_dcc_departing_request_descriptor pointer, or NULL on error.
*/
static inline struct atsc_dcc_departing_request_descriptor*
atsc_dcc_departing_request_descriptor_codec(struct descriptor* d)
{
struct atsc_dcc_departing_request_descriptor *ret =
(struct atsc_dcc_departing_request_descriptor *) d;
if (d->len < 2)
return NULL;
if (d->len != 2 + ret->dcc_departing_request_text_length)
return NULL;
if (atsc_text_validate(((uint8_t*) d) + sizeof(struct atsc_dcc_departing_request_descriptor),
ret->dcc_departing_request_text_length))
return NULL;
return (struct atsc_dcc_departing_request_descriptor*) d;
}
/**
* Accessor for the text field of an atsc_dcc_departing_request_descriptor.
*
* @param d atsc_dcc_departing_request_descriptor pointer.
* @return Pointer to the atsc_text data, or NULL on error.
*/
static inline struct atsc_text*
atsc_dcc_departing_request_descriptor_text(struct atsc_dcc_departing_request_descriptor *d)
{
uint8_t *txt = ((uint8_t*) d) + sizeof(struct atsc_dcc_departing_request_descriptor);
return (struct atsc_text*) txt;
}
/**
* Accessor for the length of the text field of an atsc_dcc_departing_request_descriptor.
*
* @param d atsc_dcc_departing_request_descriptor pointer.
* @return The length in bytes.
*/
static inline int
atsc_dcc_departing_request_descriptor_text_length(struct
atsc_dcc_departing_request_descriptor *d)
{
return d->d.len - 2;
}
#ifdef __cplusplus
}
#endif
#endif
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