/usr/include/libdvbv5/desc_t2_delivery.h is in libdvbv5-dev 1.10.0-1.
This file is owned by root:root, with mode 0o644.
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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
*
* Based on ETSI EN 300 468 V1.11.1 (2010-04)
*/
/**
* @file desc_t2_delivery.h
* @ingroup descriptors
* @brief Provides the descriptors for the DVB-T2 delivery system descriptor
* @copyright GNU General Public License version 2 (GPLv2)
* @author Mauro Carvalho Chehab
*
* @par Relevant specs
* The descriptor described herein is defined at:
* - ETSI EN 300 468 V1.11.1
*
* @par Bug Report
* Please submit bug reports and patches to linux-media@vger.kernel.org
*/
#ifndef _T2_DELIVERY_H
#define _T2_DELIVERY_H
#include <libdvbv5/descriptors.h>
/**
* @struct dvb_desc_t2_delivery_subcell
* @ingroup descriptors
* @brief Structure to describe transponder subcell extension and frequencies
*
* @param cell_id_extension cell id extension
* @param transposer_frequency transposer frequency
*/
struct dvb_desc_t2_delivery_subcell {
uint8_t cell_id_extension;
uint16_t transposer_frequency;
} __attribute__((packed));
/**
* @struct dvb_desc_t2_delivery
* @ingroup descriptors
* @brief Structure containing the T2 delivery system descriptor
*
* @param plp_id data PLP id
* @param system_id T2 system id
* @param SISO_MISO SISO MISO
* @param bandwidth bandwidth
* @param guard_interval guard interval
* @param transmission_mode transmission mode
* @param other_frequency_flag other frequency flag
* @param tfs_flag tfs flag
*
* @param centre_frequency centre frequency vector
* @param frequency_loop_length size of the dvb_desc_t2_delivery::centre_frequency
* vector
*
* @param subcel_info_loop_length size of the dvb_desc_t2_delivery::subcell
* vector
* @param subcell pointer to struct dvb_desc_t2_delivery_subcell
*/
struct dvb_desc_t2_delivery {
/* extended descriptor */
uint8_t plp_id;
uint16_t system_id;
union {
uint16_t bitfield;
struct {
uint16_t tfs_flag:1;
uint16_t other_frequency_flag:1;
uint16_t transmission_mode:3;
uint16_t guard_interval:3;
uint16_t reserved:2;
uint16_t bandwidth:3;
uint16_t SISO_MISO:2;
} __attribute__((packed));
} __attribute__((packed));
uint32_t *centre_frequency;
uint8_t frequency_loop_length;
uint8_t subcel_info_loop_length;
struct dvb_desc_t2_delivery_subcell *subcell;
} __attribute__((packed));
struct dvb_v5_fe_parms;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initializes and parses the T2 delivery system 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 ext struct dvb_extension_descriptor pointer
* @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 dvb_desc_t2_delivery_init(struct dvb_v5_fe_parms *parms,
const uint8_t *buf,
struct dvb_extension_descriptor *ext,
void *desc);
/**
* @brief Prints the content of the T2 delivery system descriptor
* @ingroup descriptors
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param ext struct dvb_extension_descriptor pointer
* @param desc pointer to struct dvb_desc
*/
void dvb_desc_t2_delivery_print(struct dvb_v5_fe_parms *parms,
const struct dvb_extension_descriptor *ext,
const void *desc);
/**
* @brief Frees all data allocated by the T2 delivery system descriptor
* @ingroup descriptors
*
* @param desc pointer to struct dvb_desc to be freed
*/
void dvb_desc_t2_delivery_free(const void *desc);
/**
* @brief converts from internal representation into bandwidth in Hz
*/
extern const unsigned dvbt2_bw[];
/**
* @brief converts from internal representation into enum fe_guard_interval,
* as defined at DVBv5 API.
*/
extern const uint32_t dvbt2_interval[];
/**
* @brief converts from the descriptor's transmission mode into
* enum fe_transmit_mode, as defined by DVBv5 API.
*/
extern const unsigned dvbt2_transmission_mode[];
#ifdef __cplusplus
}
#endif
#endif
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