java jna调用C++外部函数指针缓冲区参数如何定义和传递

[u013100836]

动态库提供一个外部函数 IVS_SDK_GetDeviceList， pCameraInfoList用于获取信息指针
//cpp code,定义100个IVS_CAMERA_BRIEF_INFO_LIST数据结构缓存，通过IVS_SDK_GetDeviceList方法指针参数返回缓冲区
int uiReqNum = 100;
int uiRsqBufSize = sizeof(IVS_CAMERA_BRIEF_INFO_LIST) + (uiReqNum-1) * sizeof(IVS_CAMERA_BRIEF_INFO);// 计算缓存大小
IVS_CAMERA_BRIEF_INFO_LIST* pCameraInfoList = (IVS_CAMERA_BRIEF_INFO_LIST*)(new IVS_CHAR[uiRsqBufSize]);//分配内存
int iRet = IVS_SDK_GetDeviceList(null, 0, &IndexRange, pCameraInfoList, uiRsqBufSize);

我的问题是，使用java jna使用该外部函数时，pCameraInfoList这一块缓冲区参数如何定义和传递？返回后如何从缓冲区100个数据集，逐条取得信息？

[十八道胡同]

import com.sun.jna.Library;
import com.sun.jna.Memory;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
//import java.util.concurrent;

public class CoreSoTest {
    public static void main(String[] args) {
        System.out.println("参数初始化开始--1");
        DllService dllService = DllService.INSTANCE;
        System.out.println("参数初始化开始--2");
        Pointer pointer = new Memory(10240);
        dllService.Init("/home/lich/TestJava/PriceTxt",
                "/home/lich/TestJava");
        System.out.println("参数初始化开始--3");
        int count = 10000;
        //while (count > 0) 
        {
            int ret = dllService.GetXX(
                    "870501246F6CA27320191224182541,3513,2019-12-21T18:22:40,1904,2029-12-24T18:39:51,591F06,",
                    pointer);
            System.out.println(count + "->" + ret + "->" + pointer.getString(0));
            count--;
        }
      
        try {
            dllService.DeInit();
        } catch (Exception ex) {
            ex.printStackTrace();
        }

    }

    interface DllService extends Library {
        DllService INSTANCE = (DllService) Native.loadLibrary("CSLinux", DllService.class);
        DllService INSTANCE2 = (DllService) Native.synchronizedLibrary(INSTANCE);

        boolean Init(String feedir, String logdir);

        int GetXX(String paramString, Pointer resultString);

        int DeInit();
    }
}

我的例子，给你参考