android-cloud-H5/screenIos/helper.js

//此文件实现将控制命令封装成协议，具体协议内容请看：
 //链接：http://note.youdao.com/noteshare?id=dabda6c613adef7a416bd2625cd770a1

 //bcc校验码计算
 //arry: 要计算的数组
 //返回计算协议中校验位的校验码
 function calBcc(arry) {
 	var bcc = 0;
 	for (i = 0; i < arry.length; i++) {
 		bcc ^= arry[i];
 	}
 	return bcc;
 }

 //数组打印，调试用
 function PrintArry(data) {
 	var str = "";

 	for (i = 0; i < data.length; i++) {
 		str = str + data[i].toString(16).padStart(2, '0');
 	}

 	str = str.toUpperCase();
 	return str;
 }

 //sn:板卡sn号，stirng
 //type：数据类型，数字
 //jsonCmd: json命令
 //返回值：生成一个Uint8Array，通过websocket发送给板卡
 function makeFrame(sn, dataType, jsonCmd) {
 	var index = 0;
 	var dataLen = jsonCmd.length;
 	var frameLen = dataLen + 26;
 	var outPut = new Uint8Array(frameLen);
 	outPut[index++] = 0x68;
 	outPut[index++] = (dataLen & 0xff000000) >> 24;
 	outPut[index++] = (dataLen & 0x00ff0000) >> 16;
 	outPut[index++] = (dataLen & 0x0000ff00) >> 8;
 	outPut[index++] = dataLen & 0x000000ff;
 	outPut[index++] = 0; //类型为client

 	//sn号赋值，string转ascii
 	for (i = 0; i < sn.length; i++) {
 		outPut[index++] = sn[i].charCodeAt();
 	}

 	outPut[index++] = dataType; //指定数据类型为json
 	//json string转ascii
 	for (i = 0; i < jsonCmd.length; i++) {
 		outPut[index++] = jsonCmd[i].charCodeAt();
 	}

 	var bccBuffer = outPut.slice(1, frameLen - 3 + 1); //忽略协议头和协议尾
 	outPut[index++] = calBcc(bccBuffer);
 	outPut[index++] = 0x16;
 	// console.log("打印数组:%s", PrintArry(outPut));
 	console.log("数组长度:%d", outPut.length);
 	//return PrintArry(outPut);
 	return outPut;
 }
 //触发键盘事件, code表示键盘值
 function ExexuteKeyDown(code, sn) {
 	var jsonObj = {
 		"data": {
 			"keyCode": code,
 			"event": "keyDown"
 		}
 	};
 	var json = JSON.stringify(jsonObj);
 	console.log("json==================", json);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, json);
 }
 //触发鼠标按下事件，x：x坐标， y：y坐标
 function ExexuteMouseDown(x, y, sn) {
 	var jsonObj = {
 		"data": {
 			"action": 0,
 			"count": 1,
 			"pointerId": 0,
 			"x": x,
 			"y": y
 		},
 		"event": "0"
 	};
 	var json = JSON.stringify(jsonObj);
 	console.log("json==================", json);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, json);
 }
 //触发鼠标移动事件，x：x坐标， y：y坐标
 function ExexuteMouseMove(x, y, sn) {
 	var jsonObj = {
 		"data": {
 			"action": 2,
 			"count": 1,
 			"pointerId": 0,
 			"x": x,
 			"y": y
 		},
 		"event": "2"
 	};
 	var json = JSON.stringify(jsonObj);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, json);
 }

 function ExexuteKeyBoard(keycode, sn) {
 	var jsonObj = {
 		"data": {
 			"keyCode": keycode.toString()
 		},
 		"event": "keyCode"
 	};
 	var json = JSON.stringify(jsonObj);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, json);
 }

 //触发鼠标抬起事件，x：x坐标， y：y坐标
 function ExexuteMouseUp(x, y, sn) {
 	var jsonObj = {
 		"data": {
 			"action": 1,
 			"count": 1,
 			"pointerId": 0,
 			"x": x,
 			"y": y
 		},
 		"event": "1"
 	};
 	var json = JSON.stringify(jsonObj);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, json);
 }
 //触发滑动事件
 function ExexuteMove(data, sn) {
 	// var jsonObj = {"data":{"action":1, "count":1, "pointerId":0,"x":x, "y":y}, "event":"1"};
 	// var json = JSON.stringify(jsonObj);
 	// var sn = "RK3923C1201900139";
 	return makeFrame(sn, 0, data);
 }
 //示例：
 //var sn = "RK3923C1201900139";
 //var json = "{\"data\":{\"keyCode\":24},\"type\":\"keyDown\"}";
 // makeFrame(sn, 0, json);
 //ExexuteKeyDown()



 // 加个请求I帧的报文
 function RequestIFrame(sn) {
 	console.log('加个请求I帧的报文')
 	var outPut = new Uint8Array([0x20])
 	return makeFrameExtend(sn, 6, outPut)
 }

 function makeFrameExtend(sn, dataType, body) {
 	var index = 0
 	var dataLen = body.length
 	var frameLen = dataLen + 26
 	var outPut = new Uint8Array(frameLen)
 	outPut[index++] = 0x68
 	outPut[index++] = (dataLen & 0xff000000) >> 24
 	outPut[index++] = (dataLen & 0x00ff0000) >> 16
 	outPut[index++] = (dataLen & 0x0000ff00) >> 8
 	outPut[index++] = dataLen & 0x000000ff
 	outPut[index++] = 0 // 类型为client

 	// sn号赋值，string转ascii
 	for (let i = 0; i < sn.length; i++) {
 		outPut[index++] = sn[i].charCodeAt()
 	}

 	outPut[index++] = dataType // 指定数据类型为json
 	// json string转ascii
 	for (let i = 0; i < body.length; i++) {
 		outPut[index++] = body[i]
 	}

 	var bccBuffer = outPut.slice(1, frameLen - 3 + 1) // 忽略协议头和协议尾
 	outPut[index++] = calBcc(bccBuffer)
 	outPut[index++] = 0x16
 	return outPut
 }

 function ConfigChannel(sn) {
 	var outPut = new Uint8Array([0x07])
 	return makeFrameExtend(sn, 6, outPut)
 }