/usr/include/libdvbv5/pat.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) 2011-2012 - Mauro Carvalho Chehab
* Copyright (c) 2012 - Andre Roth <neolynx@gmail.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
*
*/
/**
* @file pat.h
* @ingroup dvb_table
* @brief Provides the descriptors for PAT MPEG-TS table
* @copyright GNU General Public License version 2 (GPLv2)
* @author Mauro Carvalho Chehab
* @author Andre Roth
*
* @par Relevant specs
* The table described herein is defined at:
* - ISO/IEC 13818-1
*
* @see http://www.etherguidesystems.com/help/sdos/mpeg/syntax/tablesections/pat.aspx
*
* @par Bug Report
* Please submit bug reports and patches to linux-media@vger.kernel.org
*/
#ifndef _PAT_H
#define _PAT_H
#include <stdint.h>
#include <unistd.h> /* ssize_t */
#include <libdvbv5/header.h>
/**
* @def DVB_TABLE_PAT
* @brief PAT table ID
* @ingroup dvb_table
* @def DVB_TABLE_PAT_PID
* @brief PAT Program ID
* @ingroup dvb_table
*/
#define DVB_TABLE_PAT 0x00
#define DVB_TABLE_PAT_PID 0x0000
/**
* @struct dvb_table_pat_program
* @brief MPEG-TS PAT program table
* @ingroup dvb_table
*
* @param service_id service id
* @param pid pid
* @param next pointer to struct dvb_table_pat_program
*
* This structure is used to store the original PAT program table,
* converting the integer fields to the CPU endianness.
*
* The undocumented parameters are used only internally by the API and/or
* are fields that are reserved. They shouldn't be used, as they may change
* on future API releases.
*
* Everything after dvb_table_pat_program::next (including it) won't be bit-mapped
* to the data parsed from the MPEG TS. So, metadata are added there.
*/
struct dvb_table_pat_program {
uint16_t service_id;
union {
uint16_t bitfield;
struct {
uint16_t pid:13;
uint8_t reserved:3;
} __attribute__((packed));
} __attribute__((packed));
struct dvb_table_pat_program *next;
} __attribute__((packed));
/**
* @struct dvb_table_pat
* @brief MPEG-TS PAT table
* @ingroup dvb_table
*
* @param header struct dvb_table_header content
* @param programs number of programs
* @param program pointer to struct dvb_table_pat_program
* This structure is used to store the original PAT table,
* converting the integer fields to the CPU endianness.
*
* The undocumented parameters are used only internally by the API and/or
* are fields that are reserved. They shouldn't be used, as they may change
* on future API releases.
*
* Everything after dvb_table_pat_program::program (including it) won't be bit-mapped
* to the data parsed from the MPEG TS. So, metadata are added there.
*/
struct dvb_table_pat {
struct dvb_table_header header;
uint16_t programs;
struct dvb_table_pat_program *program;
} __attribute__((packed));
/**
* @brief Macro used to find programs on a PAT table
* @ingroup dvb_table
*
* @param _pgm program to seek
* @param _pat pointer to struct dvb_table_pat_program
*/
#define dvb_pat_program_foreach(_pgm, _pat) \
for (struct dvb_table_pat_program *_pgm = _pat->program; _pgm; _pgm = _pgm->next) \
struct dvb_v5_fe_parms;
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initializes and parses PAT table
* @ingroup dvb_table
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param buf buffer containing the PAT raw data
* @param buflen length of the buffer
* @param table pointer to struct dvb_table_pat to be allocated and filled
*
* This function allocates a PAT table 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.
*/
ssize_t dvb_table_pat_init (struct dvb_v5_fe_parms *parms, const uint8_t *buf,
ssize_t buflen, struct dvb_table_pat **table);
/**
* @brief Frees all data allocated by the PAT table parser
* @ingroup dvb_table
*
* @param table pointer to struct dvb_table_pat to be freed
*/
void dvb_table_pat_free(struct dvb_table_pat *table);
/**
* @brief Prints the content of the PAT table
* @ingroup dvb_table
*
* @param parms struct dvb_v5_fe_parms pointer to the opened device
* @param table pointer to struct dvb_table_pat
*/
void dvb_table_pat_print(struct dvb_v5_fe_parms *parms,
struct dvb_table_pat *table);
#ifdef __cplusplus
}
#endif
#endif
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