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antimoderate.js
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antimoderate.js
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(function() {
var scaling_factor = 1.0;
var am = {
mul_table: [
256,256,200,256,72,200,79,256,149,72,15,200,132,79,36,256,198,149,108,72,42,15,240,200,164,132,
104,79,56,36,17,256,226,198,172,149,127,108,89,72,56,42,28,15,3,240,219,200,181,164,148,132,118,104,91,
79,67,56,46,36,26,17,9,256,241,226,212,198,185,172,161,149,138,127,117,108,98,89,81,72,64,56,49,42,35,
28,22,15,9,3,251,240,229,219,209,200,190,181,172,164,156,148,140,132,125,118,111,104,98,91,85,79,73,67,
62,56,51,46,41,36,31,26,22,17,13,9,5,256,249,241,233,226,219,212,205,198,191,185,179,172,166,161,155,
149,143,138,133,127,122,117,112,108,103,98,94,89,85,81,76,72,68,64,60,56,53,49,45,42,38,35,31,28,25,22,
18,15,12,9,6,3,1,251,245,240,235,229,224,219,214,209,204,200,195,190,186,181,177,172,168,164,160,156,152,
148,144,140,136,132,129,125,121,118,114,111,107,104,101,98,94,91,88,85,82,79,76,73,70,67,64,62,59,56,54,
51,48,46,43,41,38,36,33,31,29,26,24,22,19,17,15,13,11,9,7,5,3
],
shg_table: [9, 11, 12, 13, 13, 14, 14],
processImage: function(img, idata, scale)
{
var canvas = document.createElement('canvas');
var idata_img = new Image();
idata_img.onload = function() {
w = img.width;
h = img.height;
canvas.style.width = w + 'px';
canvas.style.height = h + 'px';
canvas.width = w;
canvas.height = h;
var context = canvas.getContext('2d');
context.clearRect(0, 0, w, h);
context.drawImage(idata_img, 0, 0, w, h);
var sc = scale || scaling_factor;
radius = (Math.sqrt(w * h) / Math.sqrt(idata_img.naturalWidth * idata_img.naturalHeight)) * sc;
if (isNaN(radius) || radius < 1) return;
radius |= 0;
var imageData = canvas.getContext('2d').getImageData(0, 0, w, h);
var pixels = imageData.data;
var x, y, i, p, yp, yi, yw, r_sum, g_sum, b_sum,
r_out_sum, g_out_sum, b_out_sum,
r_in_sum, g_in_sum, b_in_sum,
pr, pg, pb, rbs;
var div = radius + radius + 1;
var w4 = w << 2;
var wMinus1 = w - 1;
var hMinus1 = h - 1;
var radiusPlus1 = radius + 1;
var sumFactor = radiusPlus1 * (radiusPlus1 + 1) / 2;
var stackStart = {r:0,g:0,b:0,a:0,next:null};
var stack = stackStart;
for(i = 1; i < div; i++) {
stack = stack.next = {r:0,g:0,b:0,a:0,next:null};
if (i == radiusPlus1) {
var stackEnd = stack;
}
}
stack.next = stackStart;
var stackIn = null;
var stackOut = null;
yw = yi = 0;
var mul_sum = am.mul_table[radius];
var shg_sum = am.shg_table[radius];
for(y = 0; y < h; y++) {
r_in_sum = g_in_sum = b_in_sum = r_sum = g_sum = b_sum = 0;
r_out_sum = radiusPlus1 * (pr = pixels[yi]);
g_out_sum = radiusPlus1 * (pg = pixels[yi+1]);
b_out_sum = radiusPlus1 * (pb = pixels[yi+2]);
r_sum += sumFactor * pr;
g_sum += sumFactor * pg;
b_sum += sumFactor * pb;
stack = stackStart;
for(i = 0; i < radiusPlus1; i++) {
stack.r = pr;
stack.g = pg;
stack.b = pb;
stack = stack.next;
}
for(i = 1; i < radiusPlus1; i++) {
p = yi + ((wMinus1 < i ? wMinus1 : i) << 2);
r_sum += (stack.r = (pr = pixels[p])) * (rbs = radiusPlus1 - i);
g_sum += (stack.g = (pg = pixels[p+1])) * rbs;
b_sum += (stack.b = (pb = pixels[p+2])) * rbs;
r_in_sum += pr;
g_in_sum += pg;
b_in_sum += pb;
stack = stack.next;
}
stackIn = stackStart;
stackOut = stackEnd;
for(x = 0; x < w; x++) {
pixels[yi] = (r_sum * mul_sum) >> shg_sum;
pixels[yi+1] = (g_sum * mul_sum) >> shg_sum;
pixels[yi+2] = (b_sum * mul_sum) >> shg_sum;
r_sum -= r_out_sum;
g_sum -= g_out_sum;
b_sum -= b_out_sum;
r_out_sum -= stackIn.r;
g_out_sum -= stackIn.g;
b_out_sum -= stackIn.b;
p = (yw + ((p = x + radius + 1) < wMinus1 ? p : wMinus1)) << 2;
r_in_sum += (stackIn.r = pixels[p]);
g_in_sum += (stackIn.g = pixels[p+1]);
b_in_sum += (stackIn.b = pixels[p+2]);
r_sum += r_in_sum;
g_sum += g_in_sum;
b_sum += b_in_sum;
stackIn = stackIn.next;
r_out_sum += (pr = stackOut.r);
g_out_sum += (pg = stackOut.g);
b_out_sum += (pb = stackOut.b);
r_in_sum -= pr;
g_in_sum -= pg;
b_in_sum -= pb;
stackOut = stackOut.next;
yi += 4;
}
yw += w;
}
for(x = 0; x < w; x++) {
g_in_sum = b_in_sum = r_in_sum = g_sum = b_sum = r_sum = 0;
yi = x << 2;
r_out_sum = radiusPlus1 * (pr = pixels[yi]);
g_out_sum = radiusPlus1 * (pg = pixels[yi+1]);
b_out_sum = radiusPlus1 * (pb = pixels[yi+2]);
r_sum += sumFactor * pr;
g_sum += sumFactor * pg;
b_sum += sumFactor * pb;
stack = stackStart;
for(i = 0; i < radiusPlus1; i++) {
stack.r = pr;
stack.g = pg;
stack.b = pb;
stack = stack.next;
}
yp = w;
for(i = 1; i <= radius; i++) {
yi = (yp + x) << 2;
r_sum += (stack.r = (pr = pixels[yi])) * (rbs = radiusPlus1 - i);
g_sum += (stack.g = (pg = pixels[yi+1])) * rbs;
b_sum += (stack.b = (pb = pixels[yi+2])) * rbs;
r_in_sum += pr;
g_in_sum += pg;
b_in_sum += pb;
stack = stack.next;
if(i < hMinus1) {
yp += w;
}
}
yi = x;
stackIn = stackStart;
stackOut = stackEnd;
for(y = 0; y < h; y++) {
p = yi << 2;
pixels[p] = (r_sum * mul_sum) >> shg_sum;
pixels[p+1] = (g_sum * mul_sum) >> shg_sum;
pixels[p+2] = (b_sum * mul_sum) >> shg_sum;
r_sum -= r_out_sum;
g_sum -= g_out_sum;
b_sum -= b_out_sum;
r_out_sum -= stackIn.r;
g_out_sum -= stackIn.g;
b_out_sum -= stackIn.b;
p = (x + (((p = y + radiusPlus1) < hMinus1 ? p : hMinus1) * w)) << 2;
r_sum += (r_in_sum += (stackIn.r = pixels[p]));
g_sum += (g_in_sum += (stackIn.g = pixels[p+1]));
b_sum += (b_in_sum += (stackIn.b = pixels[p+2]));
stackIn = stackIn.next;
r_out_sum += (pr = stackOut.r);
g_out_sum += (pg = stackOut.g);
b_out_sum += (pb = stackOut.b);
r_in_sum -= pr;
g_in_sum -= pg;
b_in_sum -= pb;
stackOut = stackOut.next;
yi += w;
}
}
var orig_src = img.getAttribute('src');
if(orig_src != null && orig_src != '') {
var orig_img = new Image();
orig_img.onload = function() {
img.src = orig_src;
};
orig_img.src = orig_src;
}
canvas.getContext('2d').putImageData(imageData, 0, 0);
img.src = canvas.toDataURL();
};
idata_img.src = idata;
}
};
var shg_cur_n=15;
var i=0;
for(; i < am.mul_table.length;) {
am.mul_table[i++] += 256;
}
function populate_shg(n){
for(i = 0; i < n; ++i) {
am.shg_table.push(shg_cur_n);
}
++shg_cur_n;
}
populate_shg(4);
populate_shg(4);
populate_shg(7);
populate_shg(9);
populate_shg(14);
populate_shg(18);
populate_shg(27);
populate_shg(37);
populate_shg(54);
populate_shg(74);
AntiModerate = { "process": am.processImage };
})();