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index.html
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<head>
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-3CCPH8TWV1"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
gtag('js', new Date());
gtag('config', 'G-3CCPH8TWV1');
</script>
<title>BF4 Online Morse Decoder</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet" href="/BF4-Morse-Lamp-Decoder/styles.css" />
<style>
@font-face {
font-family: AgencyFB;
src: url('AgencyFBBold.woff') format('woff');
}
html,
body {
text-align: center;
place-items: center;
margin-top: 10px;
}
.post-title {
font-family: AgencyFB;
font-size: 40pt;
}
</style>
</head>
<body>
<div id="test"></div>
<div class="container content">
<header class="masthead">
<h3 class="masthead-title">
<a href="https://artsymedia.github.io/BF4-Morse-Lamp-Decoder/" title="Home" class="titlehead">ArtsyMedia</a>
<nav class="nav">
<small>
<a href="https://github.com/ArtsyMedia/BF4-Morse-Lamp-Decoder/" class="navword">Github</a>
<a href="mailto:[email protected]?subject=Contact&body=Report a Bug or Suggest a Feature Here" target="_blank" class="navword">Contact</a>
</small>
</nav>
</h3>
</header>
<h1 class="post-title">BATTLEFIELD 4 ONLINE MORSE DECODER</h1>
<p>This is an online program to decode a flashing morse code sequence from a video.</p>
<a href="/BF4-Morse-Lamp-Decoder/lamp.mov">download example video</a>
<br></br>
<label for="input">Upload video here: </label>
<input id="input" type="file" accept="video/*" />
<br></br>
<p id="progress"></p>
<div id="morse"></div>
<p id="output"></p>
</div>
<script>
const history = [];
onOffLog = []
var stateLengthLog = [{
"state": false,
"frameNum": 0
}];
let wasOn = false;
var morseString = "";
var alphabet = {
"-----": "0",
".----": "1",
"..---": "2",
"...--": "3",
"....-": "4",
".....": "5",
"-....": "6",
"--...": "7",
"---..": "8",
"----.": "9",
".-": "a",
"-...": "b",
"-.-.": "c",
"-..": "d",
".": "e",
"..-.": "f",
"--.": "g",
"....": "h",
"..": "i",
".---": "j",
"-.-": "k",
".-..": "l",
"--": "m",
"-.": "n",
"---": "o",
".--.": "p",
"--.-": "q",
".-.": "r",
"...": "s",
"-": "t",
"..-": "u",
"...-": "v",
".--": "w",
"-..-": "x",
"-.--": "y",
"--..": "z",
"-.-.--": "!",
".-.-.-": ".",
"--..--": ",",
"---...": ":"
};
document.querySelector('input').addEventListener('change', startDecode, false);
function startDecode() {
var video = document.createElement('video');
var frameArray = [];
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
var pro = document.querySelector('#progress');
function initCanvas() {
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
VideoToFrames.getFrames(video.src, 30, VideoToFramesMethod.fps).then(function(frames) {
frames.forEach(function(frame) {
var colorSum = 0;
var framecanvas = document.createElement('canvas');
framecanvas.width = frame.width;
framecanvas.height = frame.height;
var ctx = framecanvas.getContext('2d');
ctx.putImageData(frame, 0, 0);
var imageData = ctx.getImageData(0, 0, framecanvas.width, framecanvas.height);
var data = imageData.data;
var r, g, b, avg;
for (var x = 0, len = data.length; x < len; x += 4) {
r = data[x];
g = data[x + 1];
b = data[x + 2];
avg = (r + g + b) / 3;
colorSum += avg;
}
var brightness = Math.floor(colorSum / (frame.width * frame.height));
const isOn = brightness > 100;
onOffLog.push(isOn);
if (stateLengthLog[(stateLengthLog.length) - 1].state == isOn) {
stateLengthLog[(stateLengthLog.length) - 1].frameNum = stateLengthLog[(stateLengthLog.length) - 1].frameNum + 1;
} else {
stateLengthLog.push({
"state": isOn,
"frameNum": 1
})
}
morseString = "";
stateLengthLog.forEach(convertMorse);
document.getElementById('morse').innerHTML = morseString;
});
});
}
video.muted = true;
video.playbackRate = 1;
video.addEventListener('loadedmetadata', initCanvas, false);
video.src = URL.createObjectURL(this.files[0]);
}
function convertMorse(interval) {
if (interval.state == true) {
if (interval.frameNum <= 6) {
morseString = morseString.concat(".");
} else {
morseString = morseString.concat("-");
}
} else {
if (interval.frameNum <= 7) {
morseString = morseString.concat("");
} else if (interval.frameNum > 16) {
morseString = morseString.concat(" ");
} else {
morseString = morseString.concat(" ");
}
}
decodeMorse(morseString);
}
function decodeMorse(message) {
var messageConverted = [];
message.split(" ").map(function(word) {
word.split(" ").map(function(letter) {
messageConverted.push(alphabet[letter]);
});
messageConverted.push(" ");
});
document.getElementById("output").innerHTML = messageConverted.join("");
}
var __awaiter = (this && this.__awaiter) || function(thisArg, _arguments, P, generator) {
return new(P || (P = Promise))(function(resolve, reject) {
function fulfilled(value) {
try {
step(generator.next(value));
} catch (e) {
reject(e);
}
}
function rejected(value) {
try {
step(generator["throw"](value));
} catch (e) {
reject(e);
}
}
function step(result) {
result.done ? resolve(result.value) : new P(function(resolve) {
resolve(result.value);
}).then(fulfilled, rejected);
}
step((generator = generator.apply(thisArg, _arguments)).next());
});
};
var __generator = (this && this.__generator) || function(thisArg, body) {
var _ = {
label: 0,
sent: function() {
if (t[0] & 1) throw t[1];
return t[1];
},
trys: [],
ops: []
},
f, y, t;
return {
next: verb(0),
"throw": verb(1),
"return": verb(2)
};
function verb(n) {
return function(v) {
return step([n, v]);
};
}
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = y[op[0] & 2 ? "return" : op[0] ? "throw" : "next"]) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [0, t.value];
switch (op[0]) {
case 0:
case 1:
t = op;
break;
case 4:
_.label++;
return {
value: op[1], done: false
};
case 5:
_.label++;
y = op[1];
op = [0];
continue;
case 7:
op = _.ops.pop();
_.trys.pop();
continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {
_ = 0;
continue;
}
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) {
_.label = op[1];
break;
}
if (op[0] === 6 && _.label < t[1]) {
_.label = t[1];
t = op;
break;
}
if (t && _.label < t[2]) {
_.label = t[2];
_.ops.push(op);
break;
}
if (t[2]) _.ops.pop();
_.trys.pop();
continue;
}
op = body.call(thisArg, _);
} catch (e) {
op = [6, e];
y = 0;
} finally {
f = t = 0;
}
if (op[0] & 5) throw op[1];
return {
value: op[0] ? op[1] : void 0,
done: true
};
}
};
var VideoToFramesMethod;
(function(VideoToFramesMethod) {
VideoToFramesMethod[VideoToFramesMethod["fps"] = 0] = "fps";
VideoToFramesMethod[VideoToFramesMethod["totalFrames"] = 1] = "totalFrames";
})(VideoToFramesMethod || (VideoToFramesMethod = {}));
var VideoToFrames = (function() {
function VideoToFrames() {}
VideoToFrames.getFrames = function(videoUrl, amount, type) {
var _this = this;
if (type === void 0) {
type = VideoToFramesMethod.fps;
}
return new Promise(function(resolve, reject) {
var frames = [];
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
var duration;
var video = document.createElement('video');
video.preload = 'auto';
var that = _this;
video.addEventListener('loadeddata', function() {
return __awaiter(this, void 0, void 0, function() {
var totalFrames, time, _a, _b, _c;
return __generator(this, function(_d) {
switch (_d.label) {
case 0:
canvas.width = video.videoWidth;
canvas.height = video.videoHeight;
duration = video.duration;
totalFrames = amount;
if (type === VideoToFramesMethod.fps) {
totalFrames = duration * amount;
}
time = 0;
_d.label = 1;
case 1:
if (!(time < duration))
return [3 /*break*/ , 4];
_b = (_a = frames).push;
return [4 /*yield*/ , that.getVideoFrame(video, context, time)];
case 2:
_b.apply(_a, [_d.sent()]);
_d.label = 3;
case 3:
time += duration / totalFrames;
document.getElementById('progress').innerHTML = "Processing frames: " + (Math.round((time / duration) * 100) - 0) + "%";
return [3 /*break*/ , 1];
case 4:
resolve(frames);
return [2 /*return*/ ];
}
});
});
});
video.src = videoUrl;
video.load();
});
};
VideoToFrames.getVideoFrame = function(video, context, time) {
var _this = this;
return new Promise(function(resolve, reject) {
var eventCallback = function() {
video.removeEventListener('seeked', eventCallback);
_this.storeFrame(video, context, resolve);
};
video.addEventListener('seeked', eventCallback);
video.currentTime = time;
});
};
VideoToFrames.storeFrame = function(video, context, resolve) {
context.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
resolve(context.getImageData(0, 0, video.videoWidth, video.videoHeight));
};
return VideoToFrames;
}());
</script>
</body>