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<!doctype html>
<html>
<head>
<style>body{background:white}</style>
</head>
<body>
<button id="clear">clear</button>
<input type="text" id="url" placeholder="enter a url" style="width: 200px;">
<a href="javascript:(function(a)%7Ba%3Ddocument.createElement(%22script%22)%3Ba.src%3D%22http://asdf.us/gif-recorder/js/record.min.js%22%3Bdocument.body.appendChild(a)%7D)()">screen record bookmarklet</a>
<div id="buttons"></div>
<div id="canvas"></div>
<video id="vid" style="display: none"></video>
</body>
<script src="dat.gui.min.js"></script>
<script src="canvasquery.js"></script>
<script>
/*
var videos = "diesel1.mov.webm diesel2.mov.webm diesel3.mov.webm diesel4.mov.webm diesel5.mov.webm MVI_00245.mov.webm MVI_0026_17(23).mov.webm MVI_1671_2.mov.webm MVI_50545.mov.webm MVI_5054_16(21).mov.webm MVI_0026_1319.mov.webm MVI_0026_38.mov.webm MVI_1671_3.mov.webm MVI_5054_10(15).mov.webm smoke.webm MVI_0026_1420.mov.webm MVI_0026_915.mov.webm MVI_1671_4.mov.webm MVI_5054_12(17).mov.webm MVI_0026_1521.mov.webm MVI_1671.mov.webm MVI_1671_5.mov.webm MVI_5054_13(18).mov.webm MVI_0026_16.mov.webm MVI_1671_1.mov.webm MVI_5045.mov.webm MVI_5054_15(20).mov.webm".split(" ")
videos.forEach(function(v){
var button = document.createElement("button")
button.innerHTML = v
button.onclick = function(){
video.src = v
}
document.getElementById("buttons").appendChild(button)
})
*/
var video = document.getElementById("vid");
video.addEventListener('loadedmetadata', loaded, false);
function loaded () {
vw = video.videoWidth
vh = video.videoHeight
videoSrc = cq(vw, vh)
video.setAttribute("loop", "loop")
video.play()
loadImage( "http://www.carbonpictures.com/bucky/data/3160/Screen%20Shot%202015-05-06%20at%203.22.37%20PM.png" )
}
video.src = "smoke.webm";
// video.src = "174708-1c2pRjKN-aI.mp4";
// video.src = "ad.mp4";
// video.src = "gopro.mp4";
var imageData, imageDataData, imageCopy, imageCopyData, destCopy, logo
url.addEventListener("keydown", function(e){
if (e.keyCode != 13) return
loadImage(url.value)
})
function loadImage(src){
src = "/cgi-bin/proxy?" + src
document.getElementById("canvas").innerHTML = ""
var image = new Image ();
image.addEventListener("load", function(){
w = image.naturalWidth
h = image.naturalHeight
dest = cq(w, h).drawImage( image, 0, 0, w, h, 0,0,w,vh ).appendTo("#canvas")
destCopy = cq(w, h)
imageData = dest.getImageData( 0, 0, w, h )
imageCopy = dest.getImageData( 0, 0, w, h )
imageDataData = imageData.data
imageCopyData = imageCopy.data
for (var i = 0, len = imageCopyData; i < len; i++) {
imageCopyData[i] = 0
}
gray = new Array (imageCopyData/4|0)
for (var i = 0, len = imageCopyData/4; i < len; i++) {
gray[i] = 0
}
}, false);
image.src = src;
}
var videoSrc, dest, mask, fill, imageData, gray;
var ready = false;
function go () {
}
(function animate(){
requestAnimationFrame(animate)
if (! videoSrc || ! imageData) return
render()
})();
function render(){
videoSrc.drawImage(video, 0, 0, vw, vh)
var videoData = videoSrc.getImageData(0, 0, vw, vh)
var videoDataData = videoData.data
var x, y, xx, yy, val, realVal
var j = 0
var rAvg = params.rAvg, gAvg = params.gAvg, bAvg = params.bAvg, valAvg = params.valAvg
var xfac = params.xFactor, yfac = params.yFactor, valfac = params.valFactor
for (var i = 0, len = videoDataData.length/4 |0; i < len; i++) {
// x = i % vw
// y = ~~(i/vw)
//
// xx = x % vw
// yy = y % vh
xx = i % vw
yy = ~~(i/vw)
x = xx
y = yy
jj = (y*w + x) * 4
realVal = videoDataData[ ((yy*vw + xx)*4) ]
val = gray[i] = avga( valAvg, gray[i], realVal )
val *= valfac
x = clamp( ~~(x + val * xfac), 0, w-1 ) | 0
y = clamp( ~~(y + val * yfac), 0, h-1 ) | 0
j = clamp( (y*w + x), 0, len-1) * 4
j = ~~ j
jj = ~~ jj
imageCopyData[jj] = avga(rAvg, imageDataData[j], imageCopyData[j])
imageCopyData[jj+1] = avga(gAvg, imageDataData[j+1], imageCopyData[j+1])
imageCopyData[jj+2] = avga(bAvg, imageDataData[j+2], imageCopyData[j+2])
imageCopyData[jj+3] = 255
}
destCopy.putImageData(imageCopy, 0, 0)
//if (params.logoAlpha) {
// dest.context.globalAlpha = params.logoAlpha
// dest.context.globalCompositeOperation = 'destination-in'
// dest.drawImage(logo.canvas, params.logoX, params.logoY, w*params.logoScale,h*params.logoScale)
//}
dest.context.globalAlpha = params.imageAlpha
dest.context.globalCompositeOperation = 'source-over'
dest.drawImage(destCopy.canvas, 0, 0, w,h)
dest.context.globalAlpha = 1.0
// dest.context.globalAlpha = 0.2
// dest.context.globalCompositeOperation = 'destination-in'
// dest.drawImage(logo.canvas, params.logoX, params.logoY, w*params.logoScale,h*params.logoScale)
}
var params = {}
// params.logoX = 166
// params.logoY = 133
// params.logoScale = 0.7
// params.logoAlpha = 0.0
params.imageAlpha = 1.0
params.rAvg = 5
params.gAvg = 5
params.bAvg = 5
params.valAvg = 2
params.xFactor = 1
params.yFactor = 1
params.valFactor = 1
window.onload = function() {
var gui = new dat.GUI();
// gui.add(params, 'logoX', 0, w);
// gui.add(params, 'logoY', 0, h);
// gui.add(params, 'logoScale', 0.2, 1);
// gui.add(params, 'logoAlpha', 0.0, 1);
gui.add(params, 'imageAlpha', 0.0, 1);
gui.add(params, 'rAvg', 2, 20);
gui.add(params, 'gAvg', 2, 20);
gui.add(params, 'bAvg', 2, 20);
gui.add(params, 'valAvg', 2, 20);
gui.add(params, 'xFactor', -5, 5);
gui.add(params, 'yFactor', -5, 5);
gui.add(params, 'valFactor', -20, 20);
}
document.getElementById("clear").onclick = function(){
dest.clearRect(0,0,w,h)
}
function avga(n,a,b) { return ((a*(~~n-1) + b)/~~n)|0 }
function avgb(n,b,a) { return ((a*(~~n-1) + b)/~~n)|0 }
function clamp(n,a,b) { return n < a ? a : n > b ? b : n }
</script>
</html>
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