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index.html
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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Time-lapse</title>
<style>
body {
background-color: blue;
background-image: linear-gradient(180deg, rgb(0, 187, 255), blue);
background-attachment: fixed;
text-align: center;
font-family: 'Trebuchet MS', sans-serif;
color: white;
}
h1, h2 {
font-weight: 700;
color: yellow;
background-color: #0003;
padding: 7px;
border-radius: 20px;
margin-top: 0px;
text-shadow: 2px 1px 0px black;
}
input:not([type="range"]), button {
font-family: 'Trebuchet MS', sans-serif;
font-size: 14px;
color: white;
background-color: #eef4;
box-shadow: inset 0px 0px 17px blue;
text-align: center;
padding: 12px;
padding-left: 20px;
padding-right: 20px;
border-radius: 20px;
border-color: blue;
border-style: solid;
border-width: 3px;
margin: 3.5px;
outline: none;
}
input:not([type="range"]):hover, input:not([type="range"]):focus, button:hover {
cursor: pointer;
box-shadow: 0px 0px 17px yellow;
border-color: yellow;
}
button:active {
box-shadow: none;
border-color: orange;
}
#timelapseCTRL {
width: 95%;
max-width: 850px;
display: none;
}
#timelapseCTRL button {
font-size: 40px;
padding: 0px;
border: none;
background-color: transparent;
box-shadow: none;
}
#timelapseCTRL button:hover {
text-shadow: 0px 0px 25px yellow;
}
img {
border-radius: 20px;
width: 95%;
max-width: 850px;
}
input[type='range'] {
-webkit-appearance: none !important;
background: yellow;
width: 80%;
}
input[type="range"]:hover {
cursor: ew-resize;
}
section {
display:inline-table;
background-color: #eef4;
border-radius: 20px;
padding: 20px;
margin-bottom: 25px;
}
#progressbar {
position: fixed;
bottom: 0px;
right: 15px;
text-align: right;
margin-bottom: 15px;
background-color: yellow;
color: black;
display: none;
}
#single, #multiple {
width: 90%;
max-width: 400px;
height: 230px;
}
</style>
<script>
var months = ["", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
var vid = [];
function imgname(timeInput) {
return "./" + months[parseInt(timeInput.slice(5,7))] + "_" + timeInput.slice(8,10) + "_" + timeInput.slice(0,4) + "_" + timeInput.slice(11,13) + ":" + timeInput.slice(14,16) + ".jpg";
}
function $(elementID) {
return document.getElementById(elementID);
}
function img64(Url, Then = function(base64img){}, Err = function(statusCode){}) {
var x = new XMLHttpRequest();
x.open("GET", Url);
x.responseType = "blob";
x.send();
x.onload = function() {
if (this.status != 200) {
Err(this.status);
} else {
var reader = new FileReader();
reader.readAsDataURL(x.response);
reader.onloadend = function() {
Then(reader.result);
};
}
};
}
function getImg() {
var input = $("single-input").value;
img64(imgname(input), function(data) {
$("img").src = data;
$("timelapseCTRL").style.display = 'none';
}, function(stat) {
alert("The image you requested does not exist.\n\nERROR " + stat.toString());
});
}
function digits2(n) {
if (n < 10) {
return "0" + n.toString();
} else {
return n.toString();
}
}
function progress1() {
$("loading").value += 1;
if ($("loading").value >= $("loading").max) {
$("progressbar").style.display = 'none';
$("timelapseCTRL").style.display = 'inline-table';
playpause();
}
}
function getVid() {
var startHour = parseInt($("startTime").value.slice(0,2));
var startMin = parseInt($("startTime").value.slice(3,5));
var endHour = parseInt($("endTime").value.slice(0,2));
var endMin = parseInt($("endTime").value.slice(3,5));
var pics = 60*(endHour - startHour) + (endMin - startMin);
$("loading").value = 0;
$("loading").max = pics + 1;
$("videoProgress").max = pics;
$("progressbar").style.display = 'inline-table';
vid = [];
var hour = startHour;
var min = startMin;
for (i=0; i<=pics; i++) {
vid[i] = imgname($("timelapse-day").value + "T" + digits2(hour) + ":" + digits2(min));
eval("img64(vid["+i.toString()+"],function(data){vid["+i.toString()+"]=data;progress1()},function(){vid["+i.toString()+"]='';progress1()})");
min++;
if (min >= 60) {
min -= 60;
hour++;
}
}
}
var vidIndex = 0;
var playing = -1;
var fps = 10;
function back() {
vidIndex--;
if (vidIndex < 0) {
vidIndex = 0;
}
$("videoProgress").value = vidIndex;
if (vid[vidIndex].length > 0) {
$("img").src = vid[vidIndex];
}
}
function next() {
vidIndex++;
if (vidIndex >= vid.length) {
vidIndex = vid.length - 1;
}
$("videoProgress").value = vidIndex;
if (vid[vidIndex].length > 0) {
$("img").src = vid[vidIndex];
}
}
function playpause() {
if (playing == -1) { // Play
playing = setInterval(function() {
vidIndex++;
if (vidIndex >= vid.length) {
vidIndex = 0;
}
$("videoProgress").value = vidIndex;
if (vid[vidIndex].length > 0) {
$("img").src = vid[vidIndex];
}
}, 1000/fps);
} else {
clearInterval(playing);
playing = -1;
}
}
function goToFrame(frameNumber) {
if (frameNumber >= 0 && frameNumber < vid.length) {
vidIndex = frameNumber;
if (vid[vidIndex].length > 0) {
$("img").src = vid[vidIndex];
}
}
}
</script>
</head>
<body>
<h1>Time-lapse Wireless Access</h1>
<section id="single">
<h2>Retrieve Single Image</h2><br>
<input type="datetime-local" id="single-input"><br>
<button onclick="getImg()">Load Image</button>
</section>
<section id="multiple">
<h2>Retrieve Time-lapse Video</h2>
<input type="date" id="timelapse-day"><br>
<label for="startTime">From</label>
<input type="time" id="startTime" oninput="$('endTime').focus()">
<nobr><label for="endTime">to</label>
<input type="time" id="endTime"><br></nobr>
<button onclick="getVid()">Load Time-lapse</button>
</section>
<br><br>
<img id="img" src="./live.jpg">
<br><br>
<section id="timelapseCTRL">
<button onclick="playpause()" title="Play/Pause time-lapse video">⏯️</button>
<button onclick="back()" title="Go back one minute">⏮️</button>
<button onclick="next()" title="Go to next minute">⏭️</button>
<input type="range" min="0" max="120" value="0" id="videoProgress" oninput="goToFrame(this.value)">
</section>
<section id="progressbar">
<label id="loadingLabel" for="loading">Loading Time-lapse.... </label>
<progress id="loading" max="120" val="0"></progress>
</section>
<br>
</body>
</html>