code_app/test/webscan/demo/sftdevice.js

//高拍仪与身份证读卡器设备
var ws_gpysfz={
	type:1,
	port:9456,
	text:"高拍仪与身份证识读机",
	url:"ws://127.0.0.1:9456/",
	ws:null,
	connected:false
  };
//手写签名设备
var ws_sxsb={
	type:2,
	port:9457,
	text:"手写签名",
	url:"ws://127.0.0.1:9457/",
	ws:null,
	connected:false
  };
//扫描仪设备
var ws_smy={
	type:3,
	port:9458,
	text:"扫描设备",
	url:"ws://127.0.0.1:9458/",
	ws:null,
	connected:false
  };
//日志输出
function addlog(obj){
	console.log(obj);
	if(typeof(obj)=="string" && typeof(addDebugLog)!="undefined"){
		addDebugLog(obj);
	}
}
function sendWsData(ws,msg){
	try{
		var jsData = typeof(msg)=="string"?msg:JSON.stringify(msg);
		if(typeof(addSendLog)!="undefined"){
			addSendLog(jsData);
		}
		ws.send(jsData);
		return true;
	}
	catch(e){
		addlog("发送 " + msg + " 消息失败");
		addlog(e);
		return false;
	}
}
function sendMessage(obj,msg){
	var bRet=false;
	if(obj.ws!=null&&obj.ws.readyState==1){
		bRet = sendWsData(obj.ws,msg);
	}
	else{
		addlog(obj.url + " 未连接成功！");
	}
	return bRet;
}
//发送高拍仪身份证消息
function sendGpySfzMessage(msg){
	return sendMessage(ws_gpysfz,msg);
}
//发送手写签名消息
function sendSxqmMessage(msg){
	return sendMessage(ws_sxsb,msg);
}
//发送扫描仪消息
function sendSmyMessage(msg){
	return sendMessage(ws_smy,msg);
}
//接收消息 自动调用 processMessage 函数
function recvMessage(msg){
	if(typeof(processMessage)!="undefined"){
		processMessage(msg);
	}	
}
function onUpdateStatus(t,p,f){
	if(typeof(updateStatus)!="undefined"){
		updateStatus(t,p,f);
	}
}
//初始化WebSocket连接
function ConnectServer(device) {
	try{
		device.connected = false;
		if ('WebSocket' in window || window.WebSocket) {
			device.ws = new WebSocket(device.url);
		}
		else if ('MozWebSocket' in window) {
			device.ws = new MozWebSocket(device.url);
		}
		else {
			alert("浏览器版本太低！请使用Chrome、Firefox浏览器！");
			return;
		}
		if(device.ws!=null){
			device.ws.onopen = function () {
				device.connected = true;
				onUpdateStatus(device.type,device.port,true);
			}
			device.ws.onclose = function (e) {
				device.connected = false;
				onUpdateStatus(device.type,device.port,false);
			}
			device.ws.onmessage = function (e) {
				var txt = "";
				if (typeof (e.data) == "string") {
					txt = e.data;
				}
				else{
					try {
						txt = JSON.stringify(e.data);
					}
					catch (e){
						txt = "";
						addlog("数据解析失败！");
						addlog(e);
					}
				}
				if(txt!="") {
					recvMessage(txt);
				}
			}
			device.ws.onerror = function (e) {
				addlog(e);
			};
			device.ws.open();//连接 websocket
			addlog(device.url+" 初始化完成！");
		}
		else{
			onUpdateStatus(device.type,device.port,false);
			addlog(device.url+" 初始化失败！");
		}
	}
	catch(e){
		addlog(device.url+" 连接失败！");
		addlog(e);
	}
}
//初始化司法厅设备
function InitDevice(){
	ConnectServer(ws_gpysfz);
	ConnectServer(ws_sxsb);
	ConnectServer(ws_smy);
}
//高拍仪接口函数
//发送获取视频设备列表消息
function SendGetVideoDevices(){
	return sendGpySfzMessage({"Func":"GetVideoDevices","arg":"0"});
}
//发送获取音频设备列表消息
function SendGetAudioDevices(){
	return sendGpySfzMessage({"Func":"GetAudioDevices","arg":"0"});
}
//发送获取分辨率列表消息
function SendGetResolution(index){
	return sendGpySfzMessage({"Func":"GetResolution","arg":""+index});
}
//发送切换视频分辨率消息
function SendChangeVideoResolution(index){
	return sendGpySfzMessage({"Func":"ChangeVideoResolution","arg":""+index});
}
//发送打开指定视频消息
function SendStartVideo(index){
	return sendGpySfzMessage({"Func":"StartVideo","arg":""+index});
}
//发送打开主视频消息
function SendStartRunMain(){
	return sendGpySfzMessage({"Func":"StartRunMain","arg":"0"});
}
//发送打开副视频消息
function SendStartRunSub(){
	return sendGpySfzMessage({"Func":"StartRunSub","arg":"0"});
}
//发送关闭视频消息
function SendStopVideo(){
	return sendGpySfzMessage({"Func":"StopVideo","arg":"0"});
}
//发送文件方式拍照消息
function SendCaptureFile(filename){
	return sendGpySfzMessage({"Func":"CaptureFile","arg":""+filename});
}
//发送Base64方式拍照消息
function SendCaptureBase64(format){
	return sendGpySfzMessage({"Func":"CaptureBase64","arg":""+format});
}
//发送左旋转消息
function SendRotateLeft(angle){
	return sendGpySfzMessage({"Func":"RotateLeft","arg":""+angle});
}
//发送右旋转消息
function SendRotateRight(angle){
	return sendGpySfzMessage({"Func":"RotateRight","arg":""+angle});
}
//发送放大消息
function SendZoomIn(){
	return sendGpySfzMessage({"Func":"ZoomIn","arg":"0"});
}
//发送缩小消息
function SendZoomOut(){
	return sendGpySfzMessage({"Func":"ZoomOut","arg":"0"});
}
//发送切换裁剪方式消息
function SendChangeCutType(cutType){
	return sendGpySfzMessage({"Func":"ChangeCutType","arg":""+cutType});
}
//发送设置色彩模式消息
function SendSetColorType(colorType){
	return sendGpySfzMessage({"Func":"SetColorType","arg":""+colorType});
}
//发送设置JPG图片压缩率消息
function SendSetJPGQuality(quality){
	return sendGpySfzMessage({"Func":"SetJPGQuality","arg":""+quality});
}

//身份证识读机接口函数
//发送读取身份证消息
function SendReadIDCard(){
	return sendGpySfzMessage({"Func":"ReadIDCard","arg":"0"});
}

//手写签名设备接口函数
//发送开始签字消息
function SendStartSign(){
	return sendSxqmMessage({"Func":"StartSign","arg":"0"});
}
//发送关闭签字消息
function SendCloseSign(){
	return sendSxqmMessage({"Func":"CloseSign","arg":"0"});
}

//扫描设备接口函数
//发送获取所有SANE/twain源名称消息
function SendGetDeviceList(){
	return sendSmyMessage({"Func":"GetDeviceList","arg":"0"});
}
//发送选择SANE/twain源名称消息
function SendSelectDevice(index){
	return sendSmyMessage({"Func":"SelectDevice","arg":""+index});
}
//发送设置色彩模式消息
function SendSetScanColorType(colorType){
	return sendSmyMessage({"Func":"SetScanColorType","arg":""+colorType});
}
//发送设置扫描分辨率消息
function SendSetDPI(dpi){
	return sendSmyMessage({"Func":"SetDPI","arg":""+dpi});
}
//发送设置单双面消息
function SendSetDuplex(duplex){
	return sendSmyMessage({"Func":"SetDuplex","arg":""+duplex});
}
//发送设置JPG图片压缩率消息
function SendSetScanJPGQuality(quality){
	return sendSmyMessage({"Func":"SetScanJPGQuality","arg":""+quality});
}
//发送开始扫描消息
function SendStartScan(page){
	return sendSmyMessage({"Func":"StartScan","arg":""+page});
}