nvds_msgapi.h

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/*
 * Copyright (c) 2018-2020 NVIDIA Corporation.  All rights reserved.
 *
 * NVIDIA Corporation and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA Corporation is strictly prohibited.
 *
 */

#ifndef __NVDS_MSGAPI_H__
#define __NVDS_MSGAPI_H__

#ifdef __cplusplus
extern "C"
{
#endif
#include <stdint.h>

typedef void *NvDsMsgApiHandle;

typedef enum {
  NVDS_MSGAPI_EVT_SUCCESS,
  NVDS_MSGAPI_EVT_DISCONNECT,
  NVDS_MSGAPI_EVT_SERVICE_DOWN
} NvDsMsgApiEventType;

typedef enum {
NVDS_MSGAPI_OK,
NVDS_MSGAPI_ERR,
NVDS_MSGAPI_UNKNOWN_TOPIC
} NvDsMsgApiErrorType;

typedef void (*nvds_msgapi_send_cb_t)(void *user_ptr,  NvDsMsgApiErrorType completion_flag);

typedef void (*nvds_msgapi_subscribe_request_cb_t)(NvDsMsgApiErrorType flag, void *msg, int msg_len, char *topic, void *user_ptr);

typedef void (*nvds_msgapi_connect_cb_t)(NvDsMsgApiHandle h_ptr, NvDsMsgApiEventType ds_evt);

NvDsMsgApiHandle nvds_msgapi_connect(char *connection_str, nvds_msgapi_connect_cb_t connect_cb, char *config_path);

NvDsMsgApiErrorType nvds_msgapi_send(NvDsMsgApiHandle h_ptr, char *topic, const uint8_t *payload, size_t nbuf);

NvDsMsgApiErrorType nvds_msgapi_send_async(NvDsMsgApiHandle h_ptr, char  *topic, const uint8_t *payload, size_t nbuf, nvds_msgapi_send_cb_t send_callback, void *user_ptr);

NvDsMsgApiErrorType nvds_msgapi_subscribe (NvDsMsgApiHandle h_ptr, char ** topics, int num_topics, nvds_msgapi_subscribe_request_cb_t  cb, void *user_ctx);

void nvds_msgapi_do_work(NvDsMsgApiHandle h_ptr);

NvDsMsgApiErrorType nvds_msgapi_disconnect(NvDsMsgApiHandle h_ptr);

char *nvds_msgapi_getversion(void);

char *nvds_msgapi_get_protocol_name(void);

NvDsMsgApiErrorType nvds_msgapi_connection_signature(char *broker_str, char *cfg, char *output_str, int max_len);

#ifdef __cplusplus
}
#endif

#endif