/usr/include/dvbpsi/nit.h is in libdvbpsi-dev 1.2.0-1.
This file is owned by root:root, with mode 0o644.
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* nit.h
* Copyright (C) 2001-2011 VideoLAN
* $Id$
*
* Authors: Johann Hanne
* heavily based on pmt.c which was written by
* Arnaud de Bossoreille de Ribou <bozo@via.ecp.fr>
* Jean-Paul Saman <jpsaman@videolan.org>
*
* 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
*
*****************************************************************************/
/*!
* \file <nit.h>
* \author Johann Hanne
* \brief Application interface for the NIT decoder and the NIT generator.
*
* Application interface for the NIT decoder and the NIT generator.
* New decoded NIT tables are sent by callback to the application.
*/
#ifndef _DVBPSI_NIT_H_
#define _DVBPSI_NIT_H_
#ifdef __cplusplus
extern "C" {
#endif
/*****************************************************************************
* dvbpsi_nit_ts_t
*****************************************************************************/
/*!
* \struct dvbpsi_nit_ts_s
* \brief NIT TS structure.
*
* This structure is used to store a decoded TS description.
* (ETSI EN 300 468 section 5.2.1).
*/
/*!
* \typedef struct dvbpsi_nit_ts_s dvbpsi_nit_ts_t
* \brief dvbpsi_nit_ts_t type definition.
*/
typedef struct dvbpsi_nit_ts_s
{
uint16_t i_ts_id; /*!< transport stream id */
uint16_t i_orig_network_id; /*!< original network id */
dvbpsi_descriptor_t * p_first_descriptor; /*!< descriptor list */
struct dvbpsi_nit_ts_s * p_next; /*!< next element of
the list */
} dvbpsi_nit_ts_t;
/*****************************************************************************
* dvbpsi_nit_t
*****************************************************************************/
/*!
* \struct dvbpsi_nit_s
* \brief NIT structure.
*
* This structure is used to store a decoded NIT.
* (ETSI EN 300 468 section 5.2.1).
*/
/*!
* \typedef struct dvbpsi_nit_s dvbpsi_nit_t
* \brief dvbpsi_nit_t type definition.
*/
typedef struct dvbpsi_nit_s
{
uint8_t i_table_id; /*!< table id */
uint16_t i_extension; /*!< subtable id */
uint16_t i_network_id; /*!< network_id */
uint8_t i_version; /*!< version_number */
bool b_current_next; /*!< current_next_indicator */
dvbpsi_descriptor_t *p_first_descriptor; /*!< descriptor list */
dvbpsi_nit_ts_t * p_first_ts; /*!< TS list */
} dvbpsi_nit_t;
/*****************************************************************************
* dvbpsi_nit_callback
*****************************************************************************/
/*!
* \typedef void (* dvbpsi_nit_callback)(void* p_cb_data,
dvbpsi_nit_t* p_new_nit)
* \brief Callback type definition.
*/
typedef void (* dvbpsi_nit_callback)(void* p_cb_data, dvbpsi_nit_t* p_new_nit);
/*****************************************************************************
* dvbpsi_nit_attach
*****************************************************************************/
/*!
* \fn bool dvbpsi_nit_attach(dvbpsi_t* p_dvbpsi, uint8_t i_table_id, uint16_t i_extension,
dvbpsi_nit_callback pf_callback, void* p_cb_data)
* \brief Creation and initialization of a NIT decoder. It is attached to p_dvbpsi.
* \param p_dvbpsi dvbpsi handle to Subtable demultiplexor to which the decoder is attached.
* \param i_table_id Table ID, 0x4E, 0x4F, or 0x50-0x6F.
* \param i_extension Table ID extension, here service ID.
* \param pf_callback function to call back on new NIT.
* \param p_cb_data private data given in argument to the callback.
* \return true on success, false on failure
*/
bool dvbpsi_nit_attach(dvbpsi_t* p_dvbpsi, uint8_t i_table_id, uint16_t i_extension,
dvbpsi_nit_callback pf_callback, void* p_cb_data);
/*****************************************************************************
* dvbpsi_nit_detach
*****************************************************************************/
/*!
* \fn void dvbpsi_nit_detach(dvbpsi_t *p_dvbpsi, uint8_t i_table_id,
uint16_t i_extension)
* \brief Destroy a NIT decoder.
* \param p_dvbpsi dvbpsi handle to Subtable demultiplexor to which the decoder is attached.
* \param i_table_id Table ID, 0x4E, 0x4F, or 0x50-0x6F.
* \param i_extension Table ID extension, here service ID.
* \return nothing.
*/
void dvbpsi_nit_detach(dvbpsi_t* p_dvbpsi, uint8_t i_table_id,
uint16_t i_extension);
/*****************************************************************************
* dvbpsi_nit_init/dvbpsi_nit_new
*****************************************************************************/
/*!
* \fn void dvbpsi_nit_init(dvbpsi_nit_t* p_nit, uint8_t i_table_id, uint16_t i_extension,
uint16_t i_network_id, uint8_t i_version, bool b_current_next)
* \brief Initialize a user-allocated dvbpsi_nit_t structure.
* \param i_table_id Table ID, 0x4E, 0x4F, or 0x50-0x6F.
* \param i_extension Table ID extension, here service ID.
* \param p_nit pointer to the NIT structure
* \param i_network_id network id
* \param i_version NIT version
* \param b_current_next current next indicator
* \return nothing.
*/
void dvbpsi_nit_init(dvbpsi_nit_t* p_nit, uint8_t i_table_id, uint16_t i_extension,
uint16_t i_network_id, uint8_t i_version, bool b_current_next);
/*!
* \fn dvbpsi_nit_t *dvbpsi_nit_new(uint8_t i_table_id, uint16_t i_extension,
* uint16_t i_network_id, uint8_t i_version,
* bool b_current_next);
* \brief Allocate and initialize a new dvbpsi_nit_t structure.
* \param i_table_id Table ID, 0x4E, 0x4F, or 0x50-0x6F.
* \param i_extension Table ID extension, here service ID.
* \param i_network_id network id
* \param i_version NIT version
* \param b_current_next current next indicator
* \return p_nit pointer to the NIT structure
*/
dvbpsi_nit_t *dvbpsi_nit_new(uint8_t i_table_id, uint16_t i_extension,
uint16_t i_network_id, uint8_t i_version,
bool b_current_next);
/*****************************************************************************
* dvbpsi_nit_empty/dvbpsi_nit_delete
*****************************************************************************/
/*!
* \fn void dvbpsi_nit_empty(dvbpsi_nit_t* p_nit)
* \brief Clean a dvbpsi_nit_t structure.
* \param p_nit pointer to the NIT structure
* \return nothing.
*/
void dvbpsi_nit_empty(dvbpsi_nit_t* p_nit);
/*!
* \fn dvbpsi_nit_delete(dvbpsi_nit_t *p_nit)
* \brief Clean and free a dvbpsi_nit_t structure.
* \param p_nit pointer to the NIT structure
* \return nothing.
*/
void dvbpsi_nit_delete(dvbpsi_nit_t *p_nit);
/*****************************************************************************
* dvbpsi_nit_descriptor_add
*****************************************************************************/
/*!
* \fn dvbpsi_descriptor_t* dvbpsi_nit_descriptor_add(dvbpsi_nit_t* p_nit,
uint8_t i_tag,
uint8_t i_length,
uint8_t* p_data)
* \brief Add a descriptor in the NIT.
* \param p_nit pointer to the NIT structure
* \param i_tag descriptor's tag
* \param i_length descriptor's length
* \param p_data descriptor's data
* \return a pointer to the added descriptor.
*/
dvbpsi_descriptor_t* dvbpsi_nit_descriptor_add(dvbpsi_nit_t *p_nit,
uint8_t i_tag, uint8_t i_length,
uint8_t *p_data);
/*****************************************************************************
* dvbpsi_nit_ts_add
*****************************************************************************/
/*!
* \fn dvbpsi_nit_ts_t* dvbpsi_nit_ts_add(dvbpsi_nit_t* p_nit,
uint16_t i_ts_id, uint16_t i_orig_network_id)
* \brief Add an TS in the NIT.
* \param p_nit pointer to the NIT structure
* \param i_ts_id type of TS
* \param i_orig_network_id PID of the TS
* \return a pointer to the added TS.
*/
dvbpsi_nit_ts_t* dvbpsi_nit_ts_add(dvbpsi_nit_t* p_nit,
uint16_t i_ts_id, uint16_t i_orig_network_id);
/*****************************************************************************
* dvbpsi_nit_ts_descriptor_add
*****************************************************************************/
/*!
* \fn dvbpsi_descriptor_t* dvbpsi_nit_ts_descriptor_add(dvbpsi_nit_ts_t* p_ts,
uint8_t i_tag,
uint8_t i_length,
uint8_t* p_data)
* \brief Add a descriptor in the NIT TS.
* \param p_ts pointer to the TS structure
* \param i_tag descriptor's tag
* \param i_length descriptor's length
* \param p_data descriptor's data
* \return a pointer to the added descriptor.
*/
dvbpsi_descriptor_t* dvbpsi_nit_ts_descriptor_add(dvbpsi_nit_ts_t* p_ts,
uint8_t i_tag, uint8_t i_length,
uint8_t* p_data);
/*****************************************************************************
* dvbpsi_nit_sections_generate
*****************************************************************************/
/*!
* \fn dvbpsi_psi_section_t* dvbpsi_nit_sections_generate(dvbpsi_t *p_dvbpsi, dvbpsi_nit_t* p_nit,
uint8_t i_table_id)
* \brief NIT generator
* \param p_dvbpsi handle to dvbpsi with attached decoder
* \param p_nit NIT structure
* \param i_table_id table id, 0x40 = actual network / 0x41 = other network
* \return a pointer to the list of generated PSI sections.
*
* Generate NIT sections based on the dvbpsi_nit_t structure.
*/
dvbpsi_psi_section_t* dvbpsi_nit_sections_generate(dvbpsi_t* p_dvbpsi, dvbpsi_nit_t* p_nit,
uint8_t i_table_id);
#ifdef __cplusplus
};
#endif
#else
#error "Multiple inclusions of nit.h"
#endif
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