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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_GENRE_DESCRIPTOR
#define _UCSI_ATSC_GENRE_DESCRIPTOR 1
#ifdef __cplusplus
extern "C"
{
#endif
#include <libucsi/descriptor.h>
#include <libucsi/endianops.h>
#include <libucsi/types.h>
/**
* atsc_genre_descriptor structure.
*/
struct atsc_genre_descriptor {
struct descriptor d;
EBIT2(uint8_t reserved : 3; ,
uint8_t attribute_count : 5; );
/* uint8_t attributes[] */
} __ucsi_packed;
/**
* Process an atsc_genre_descriptor.
*
* @param d Generic descriptor pointer.
* @return atsc_genre_descriptor pointer, or NULL on error.
*/
static inline struct atsc_genre_descriptor*
atsc_genre_descriptor_codec(struct descriptor* d)
{
struct atsc_genre_descriptor *ret =
(struct atsc_genre_descriptor *) d;
if (d->len < 1)
return NULL;
if (d->len != (1 + ret->attribute_count))
return NULL;
return (struct atsc_genre_descriptor*) d;
}
/**
* Accessor for the attributes field of an atsc_genre_descriptor.
*
* @param d atsc_genre_descriptor pointer.
* @return Pointer to the attributes.
*/
static inline uint8_t*
atsc_genre_descriptor_attributes(struct atsc_genre_descriptor *d)
{
return ((uint8_t*) d) + sizeof(struct atsc_genre_descriptor);
}
#ifdef __cplusplus
}
#endif
#endif
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