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// CCTV Control
//
// Author: Florian Raemisch
// Email: olf@subsignal.org
//
// cctv-control is a webinterface to control and view
// mjpeg encoded videos by cctv cameras which are
// proxied by mjpegplexer. camera control is possible
// with arrow-keys, if mjpegplexer is configured
// properly.
//
// This Software is licensed under the GPL Version 3, 29 June 2007
var cam = 0;
var camHost = "172.22.80.56:8080";
var controlHost = "172.22.80.56:8080";
//create event which is triggered when DOM is ready
window.onDomReady = initReady;
//change from testbild to default cam when DOM is ready
window.onDomReady(changeCam);
function initReady(fn) {
if(document.addEventListener) {
document.addEventListener("DOMContentLoaded", fn, false);
}
}
//change currently displayed camera to the one in cam variable
function changeCam() {
var display = document.getElementById('screen');
if (cam <= 7 && cam >= 0) {
display.innerHTML = '<img src="http://' + camHost + '/cam/' + cam + '/stream.mjpeg" />';
}
else {
display.innerHTML = '<img src="img/testbild.png" />';
}
}
//send control command to currently selected camera
function controlCam(direction) {
if (direction == "left" || direction == "right" || direction == "up" || direction == "down") {
var request = new XMLHttpRequest();
request.open("get", "http://" + controlHost + "/cam/" + cam + "/control/" + direction + "left", false);
request.send();
return false;
}
function keyDown(event) {
switch(event.keyCode) {
case 49: // 1
cam = 0;
changeCam();
break;
case 50: // 2
cam = 1;
changeCam();
break;
case 51: // 3
cam = 2;
changeCam();
break;
case 52: // 4
cam = 3;
changeCam();
break;
case 53: // 5
cam = 4;
changeCam();
break;
case 54: // 6
cam = 5;
changeCam();
break;
case 55: // 7
cam = 6;
changeCam();
break;
case 56: // 8
cam = 7;
changeCam();
break;
case 37: // arrow left
controlCam("left");
break;
case 38: // arrow up
controlCam("up");
break;
case 39: // arrow right
controlCam("right");
break;
case 40: // arrow down
controlCam("down");
break;
}
}
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