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/*
en50221 encoder An implementation for libdvb
an implementation for the en50221 transport layer
Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com>
Copyright (C) 2005 Julian Scheel (julian at jusst dot de)
Copyright (C) 2006 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 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __EN50221_APPLICATION_DATETIME_H__
#define __EN50221_APPLICATION_DATETIME_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h>
#include <stdint.h>
#include <libdvben50221/en50221_app_utils.h>
#define EN50221_APP_DATETIME_RESOURCEID MKRID(36,1,1)
/**
* Type definition for enquiry - called when we receive a date/time enquiry from a CAM.
*
* @param arg Private argument.
* @param slot_id Slot id concerned.
* @param session_number Session number concerned.
* @param response_interval Response interval requested by CAM.
* @return 0 on success, -1 on failure.
*/
typedef int (*en50221_app_datetime_enquiry_callback) (void *arg,
uint8_t slot_id,
uint16_t session_number,
uint8_t response_interval);
/**
* Opaque type representing a datetime resource.
*/
struct en50221_app_datetime;
/**
* Create an instance of the datetime resource.
*
* @param funcs Send functions to use.
* @return Instance, or NULL on failure.
*/
extern struct en50221_app_datetime
*en50221_app_datetime_create(struct en50221_app_send_functions *funcs);
/**
* Destroy an instance of the datetime resource.
*
* @param datetime Instance to destroy.
*/
extern void en50221_app_datetime_destroy(struct en50221_app_datetime *datetime);
/**
* Register the callback for when we receive a enquiry request.
*
* @param datetime datetime resource instance.
* @param callback The callback. Set to NULL to remove the callback completely.
* @param arg Private data passed as arg0 of the callback.
*/
extern void en50221_app_datetime_register_enquiry_callback(struct en50221_app_datetime *datetime,
en50221_app_datetime_enquiry_callback callback,
void *arg);
/**
* Send the time to the CAM.
*
* @param datetime datetime resource instance.
* @param session_number Session number to send it on.
* @param utc_time UTC time in unix time format.
* @param time_offset If -1, the field will not be transmitted, otherwise it is the offset between
* UTC and local time in minutes.
* @return 0 on success, -1 on failure.
*/
extern int en50221_app_datetime_send(struct en50221_app_datetime *datetime,
uint16_t session_number,
time_t utc_time,
int time_offset);
/**
* Pass data received for this resource into it for parsing.
*
* @param datetime datetime instance.
* @param slot_id Slot ID concerned.
* @param session_number Session number concerned.
* @param resource_id Resource ID concerned.
* @param data The data.
* @param data_length Length of data in bytes.
* @return 0 on success, -1 on failure.
*/
extern int en50221_app_datetime_message(struct en50221_app_datetime *datetime,
uint8_t slot_id,
uint16_t session_number,
uint32_t resource_id,
uint8_t *data,
uint32_t data_length);
#ifdef __cplusplus
}
#endif
#endif
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