driver.h

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/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2022. All rights reserved.
 *
 * this file licensed under the Mulan PSL v2.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 * http://license.coscl.org.cn/MulanPSL2
 *
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
 * PURPOSE.
 * See the Mulan PSL v2 for more details.
 *
 * Create: 2022-06-08
 */
#ifndef DRIVER_H
#define DRIVER_H
 
#include <string>
#include <vector>
#include <unordered_map>
#include <memory>
#include <mutex>
#include <chrono>
#include <dlfcn.h>
 
using string_t = std::string;
using string_view_t = std::string_view;
 
namespace bcal {
 
class IDriver {
public:
    ~IDriver() {
        free();
    }
 
    virtual void free(void) {};
 
    virtual void init(void *args, uint32_t size) = 0;
 
    virtual void config(int32_t index, void *config, uint32_t size) = 0;
 
    virtual void lock(int32_t index) = 0;
 
    virtual void unlock(int32_t index) = 0;
    
    virtual string_t get_version(void) = 0;
};
 
struct driver_load_info {
    string_t driver_name;    
    bool        success;        
    double      load_time_ms;   
    string_t error_msg;      
};
 
class IDriverFactory {
public:
    virtual void set_driver_path(const string_t& driver_path) = 0;
 
    virtual IDriver& get_driver(const string_t& driver_name) = 0;
    
    virtual std::vector<string_t> get_driver_list(void) = 0;
 
    virtual std::vector<driver_load_info> get_driver_load_info(void) = 0;
 
    virtual void remove_driver(const string_t& driver_name) = 0;
 
    static IDriverFactory& get_instance();
};
 
using create_driver_func = IDriver* (*)();
 
using destroy_driver_func = void (*)(IDriver*);
}  // namespace bcal
 
#endif