/usr/include/libdvbv5/desc_atsc_service_location.h is in libdvbv5-dev 1.10.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2013-2014 - Mauro Carvalho Chehab <m.chehab@samsung.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation version 2
* of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
*
*/
#ifndef _ATSC_SERVICE_LOCATION_H
#define _ATSC_SERVICE_LOCATION_H
#include <libdvbv5/descriptors.h>
/**
* @file desc_atsc_service_location.h
* @ingroup descriptors
* @brief Provides the descriptors for ATSC service location
* @copyright GNU General Public License version 2 (GPLv2)
* @author Mauro Carvalho Chehab
*
* @par Relevant specs
* The descriptor described herein is defined at:
* - ATSC A/53
*
* @see http://www.etherguidesystems.com/help/sdos/atsc/semantics/descriptors/ServiceLocation.aspx
*
* @par Bug Report
* Please submit bug reports and patches to linux-media@vger.kernel.org
*/
/**
* @struct atsc_desc_service_location_elementary
* @ingroup descriptors
* @brief service location elementary descriptors
*
* @param stream_type stream type
* @param elementary_pid elementary pid
* @param ISO_639_language_code ISO 639 language code
*/
struct atsc_desc_service_location_elementary {
uint8_t stream_type;
union {
uint16_t bitfield;
struct {
uint16_t elementary_pid:13;
uint16_t reserved:3;
} __attribute__((packed));
} __attribute__((packed));
char ISO_639_language_code[3];
} __attribute__((packed));
/**
* @struct atsc_desc_service_location
* @ingroup descriptors
* @brief Describes the elementary streams inside a PAT table for ATSC
*
* @param type descriptor tag
* @param length descriptor length
* @param next pointer to struct dvb_desc
* @param elementary pointer to struct atsc_desc_service_location_elementary
* @param pcr_pid PCR pid
* @param number_elements number elements
*/
struct atsc_desc_service_location {
uint8_t type;
uint8_t length;
struct dvb_desc *next;
struct atsc_desc_service_location_elementary *elementary;
union {
uint16_t bitfield;
struct {
uint16_t pcr_pid:13;
uint16_t reserved:3;
} __attribute__((packed));
} __attribute__((packed));
uint8_t number_elements;
} __attribute__((packed));
struct dvb_v5_fe_parms;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initializes and parses the service location descriptor
* @ingroup descriptors
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param buf buffer containing the descriptor's raw data
* @param desc pointer to struct dvb_desc to be allocated and filled
*
* This function allocates a the descriptor and fills the fields inside
* the struct. It also makes sure that all fields will follow the CPU
* endianness. Due to that, the content of the buffer may change.
*
* @return On success, it returns the size of the allocated struct.
* A negative value indicates an error.
*/
int atsc_desc_service_location_init(struct dvb_v5_fe_parms *parms,
const uint8_t *buf,
struct dvb_desc *desc);
/**
* @brief Prints the content of the service location descriptor
* @ingroup descriptors
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param desc pointer to struct dvb_desc
*/
void atsc_desc_service_location_print(struct dvb_v5_fe_parms *parms,
const struct dvb_desc *desc);
/**
* @brief Frees all data allocated by the service location descriptor
* @ingroup descriptors
*
* @param desc pointer to struct dvb_desc to be freed
*/
void atsc_desc_service_location_free(struct dvb_desc *desc);
#ifdef __cplusplus
}
#endif
#endif
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