1、接口说明

2、测试用例

#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <string>
#include "list.h"

typedef int (*pCallback)(); //函数指针

struct MEDIA_DATA_CALLBACK_S{
	struct list_head list;
	pCallback cbFunc;
	void *cbArgs;
};

struct list_head g_VideoCbList;

static int OnTestCall1()
{
	printf("OnTestCall 1\n");
	
	return 0;
}

static int OnTestCall2()
{
	printf("OnTestCall 2\n");
	
	return 0;
}

static int OnTestCall3()
{
	printf("OnTestCall 3\n");
	
	return 0;
}

void AddList(pCallback cbFunc, void *cbArgs)
{
	struct MEDIA_DATA_CALLBACK_S *_this,*next;
	list_for_each_entry_safe(_this,next,&g_VideoCbList,list)
	{
		if((_this->cbFunc == cbFunc)&&(_this->cbArgs == cbArgs))
		{
			printf("callback func is exist\n");
			return ;
		}
	}
	/*申请元素节点插入队列*/
	struct MEDIA_DATA_CALLBACK_S* mediaDataCb = (struct MEDIA_DATA_CALLBACK_S *)malloc(sizeof(struct MEDIA_DATA_CALLBACK_S));
	if(mediaDataCb)
	{
		mediaDataCb->cbFunc = cbFunc;
		mediaDataCb->cbArgs = cbArgs;
		//list_add(&mediaDataCb->list,&g_VideoCbList);
		list_add_tail(&mediaDataCb->list,&g_VideoCbList);
	}
	
}

void DelList(pCallback cbFunc, void *cbArgs)
{
	struct MEDIA_DATA_CALLBACK_S *_this,*next;
	list_for_each_entry_safe(_this,next,&g_VideoCbList,list)
	{
		if((_this->cbFunc == cbFunc)&&(_this->cbArgs == cbArgs))
		{
	
			printf("list_del_init \n");
			list_del_init(&_this->list);
			free(_this);
			_this = NULL;
			
			break;
		}
	}
	
}

void TEST_1()
{
	//初始化列表
	INIT_LIST_HEAD(&g_VideoCbList);

	int listcount = 1;
	//注册回调函数
	AddList(OnTestCall1,&listcount);
	int listcount1 = 2;
	AddList(OnTestCall2,&listcount1);
	
	int listcount2 = 3;
	AddList(OnTestCall3,&listcount2);
	
	
	//调用回调函数
	struct MEDIA_DATA_CALLBACK_S *mediaDataCb,*next;
	list_for_each_entry_safe(mediaDataCb,next,&g_VideoCbList,list)
	{
		if(mediaDataCb)
		{
			mediaDataCb->cbFunc();
		}
	}
	//删除回调list
	DelList(OnTestCall2, &listcount1);
	
	//调用回调函数
	struct MEDIA_DATA_CALLBACK_S *mediaDataCb1,*next2;
	list_for_each_entry_safe(mediaDataCb1,next2,&g_VideoCbList,list)
	{
		if(mediaDataCb1)
		{
			mediaDataCb1->cbFunc();
		}
	}
	

}



int main()
{
    TEST_1();
    return 0;
}