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/* Copyright 2019 Advens
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef DARWIN_PROTOCOL_H
#define DARWIN_PROTOCOL_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <stddef.h>
#include <netinet/in.h>
#define DARWIN_FILTER_CODE_NO 0x00000000
// the default certitude list size, which is 1, to allow FMAs (see flexible array members on C99) for both C and C++
// code
#define DEFAULT_CERTITUDE_LIST_SIZE 1
/// Represent the receiver of the results.
///
/// \enum darwin_response_type
enum darwin_filter_response_type
{
DARWIN_RESPONSE_SEND_NO = 0, //!< Don't send results to anybody.
DARWIN_RESPONSE_SEND_BACK, //!< Send results back to caller.
DARWIN_RESPONSE_SEND_DARWIN, //!< Send results to the next filter.
DARWIN_RESPONSE_SEND_BOTH, //!< Send results to both caller and the next filter.
};
/// Represent the type of information sent.
///
/// \enum darwin_packet_type
enum darwin_packet_type
{
DARWIN_PACKET_OTHER = 0, //!< Information sent by something else.
DARWIN_PACKET_FILTER, //!< Information sent by another filter.
};
/// First packet to be sent to a filter.
///
/// \struct darwin_filter_packet_t
typedef struct
{
enum darwin_packet_type type; //!< The type of information sent.
enum darwin_filter_response_type response; //!< Whom the response will be sent to.
long filter_code; //!< The unique identifier code of a filter.
size_t body_size; //!< The complete size of the the parameters to be sent
unsigned char evt_id[16]; //!< An array containing the event ID
size_t certitude_size; //!< The size of the list containing the certitudes.
unsigned int certitude_list[DEFAULT_CERTITUDE_LIST_SIZE];
//!< The scores or the certitudes of the module. May be used to pass other info in specific cases.
} darwin_filter_packet_t;
#ifdef __cplusplus
};
#endif
#endif /* !DARWIN_PROTOCOL_H */
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