멀티미디어 예제

02_day/test-HAL/atoi.c

@@ -0,0 +1,20 @@
+#include "main.h"
+
+
+int my_atoi(char *buff)
+{
+	int i, sum=0;
+	for(i=0; buff[i]; i++ )
+		sum = sum*10 + buff[i] - '0';
+
+	return sum;
+}
+
+
+int my_add(int a, int b )
+{
+	return a+b;
+}
+
+
+struct _HMI HMI = { my_atoi, my_add, 10 };

02_day/test-HAL/main.c

@@ -0,0 +1,26 @@
+#include <stdio.h>
+#include <dlfcn.h>
+
+int main()
+{
+	int *global;
+	int (*func)(char*);
+	int (*add)(int,int);
+	int data;
+	void *handle = dlopen("libatoi.so", RTLD_LAZY);
+
+	func = dlsym( handle, "my_atoi" );
+	data = func("123");
+	printf("data=%d\n", data );
+
+	add  = dlsym( handle, "my_add" );
+	data = add(1,2);
+	printf("data=%d\n", data );
+
+	*global  = dlsym( handle, "global" );
+	data = add(1,2);
+	printf("data=%d\n", data );
+	dlclose(handle);
+}
+
+

02_day/test-HAL/main.h

@@ -0,0 +1,10 @@
+
+int my_atoi(char *buff);
+int my_add(int a, int b);
+
+struct _HMI
+{
+	int (*atoi)(char *buff);
+	int (*add)(int , int );
+	int global;
+};