gif.worker.js

(function(b) {
    function a(b, d) {
        if ({}.hasOwnProperty.call(a.cache, b)) return a.cache[b];
        var e = a.resolve(b);
        if (!e) throw new Error('Failed to resolve module ' + b);
        var c = {
            id: b,
            require: a,
            filename: b,
            exports: {},
            loaded: !1,
            parent: d,
            children: []
        };
        d && d.children.push(c);
        var f = b.slice(0, b.lastIndexOf('/') + 1);
        return a.cache[b] = c.exports, e.call(c.exports, c, c.exports, f, b), c.loaded = !0, a.cache[b] = c.exports
    }
    a.modules = {}, a.cache = {}, a.resolve = function(b) {
        return {}.hasOwnProperty.call(a.modules, b) ? a.modules[b] : void 0
    }, a.define = function(b, c) {
        a.modules[b] = c
    }, a.define('/gif.worker.coffee', function(d, e, f, g) {
        var b, c;
        b = a('/GIFEncoder.js', d), c = function(a) {
            var c, e, d, f;
            return c = new b(a.width, a.height), a.index === 0 ? c.writeHeader() : c.firstFrame = !1, c.setTransparent(a.transparent), c.setRepeat(a.repeat), c.setDelay(a.delay), c.setQuality(a.quality), c.addFrame(a.data), a.last && c.finish(), d = c.stream(), a.data = d.pages, a.cursor = d.cursor, a.pageSize = d.constructor.pageSize, a.canTransfer ? (f = function(c) {
                for (var b = 0, d = a.data.length; b < d; ++b) e = a.data[b], c.push(e.buffer);
                return c
            }.call(this, []), self.postMessage(a, f)) : self.postMessage(a)
        }, self.onmessage = function(a) {
            return c(a.data)
        }
    }), a.define('/GIFEncoder.js', function(e, h, i, j) {
        function c() {
            this.page = -1, this.pages = [], this.newPage()
        }

        function b(a, b) {
            this.width = ~~a, this.height = ~~b, this.transparent = null, this.transIndex = 0, this.repeat = -1, this.delay = 0, this.image = null, this.pixels = null, this.indexedPixels = null, this.colorDepth = null, this.colorTab = null, this.usedEntry = new Array, this.palSize = 7, this.dispose = -1, this.firstFrame = !0, this.sample = 10, this.out = new c
        }
        var f = a('/TypedNeuQuant.js', e),
            g = a('/LZWEncoder.js', e);
        c.pageSize = 4096, c.charMap = {};
        for (var d = 0; d < 256; d++) c.charMap[d] = String.fromCharCode(d);
        c.prototype.newPage = function() {
            this.pages[++this.page] = new Uint8Array(c.pageSize), this.cursor = 0
        }, c.prototype.getData = function() {
            var d = '';
            for (var a = 0; a < this.pages.length; a++)
                for (var b = 0; b < c.pageSize; b++) d += c.charMap[this.pages[a][b]];
            return d
        }, c.prototype.writeByte = function(a) {
            this.cursor >= c.pageSize && this.newPage(), this.pages[this.page][this.cursor++] = a
        }, c.prototype.writeUTFBytes = function(b) {
            for (var c = b.length, a = 0; a < c; a++) this.writeByte(b.charCodeAt(a))
        }, c.prototype.writeBytes = function(b, d, e) {
            for (var c = e || b.length, a = d || 0; a < c; a++) this.writeByte(b[a])
        }, b.prototype.setDelay = function(a) {
            this.delay = Math.round(a / 10)
        }, b.prototype.setFrameRate = function(a) {
            this.delay = Math.round(100 / a)
        }, b.prototype.setDispose = function(a) {
            a >= 0 && (this.dispose = a)
        }, b.prototype.setRepeat = function(a) {
            this.repeat = a
        }, b.prototype.setTransparent = function(a) {
            this.transparent = a
        }, b.prototype.addFrame = function(a) {
            this.image = a, this.getImagePixels(), this.analyzePixels(), this.firstFrame && (this.writeLSD(), this.writePalette(), this.repeat >= 0 && this.writeNetscapeExt()), this.writeGraphicCtrlExt(), this.writeImageDesc(), this.firstFrame || this.writePalette(), this.writePixels(), this.firstFrame = !1
        }, b.prototype.finish = function() {
            this.out.writeByte(59)
        }, b.prototype.setQuality = function(a) {
            a < 1 && (a = 1), this.sample = a
        }, b.prototype.writeHeader = function() {
            this.out.writeUTFBytes('GIF89a')
        }, b.prototype.analyzePixels = function() {
            var g = this.pixels.length,
                d = g / 3;
            this.indexedPixels = new Uint8Array(d);
            var a = new f(this.pixels, this.sample);
            a.buildColormap(), this.colorTab = a.getColormap();
            var b = 0;
            for (var c = 0; c < d; c++) {
                var e = a.lookupRGB(this.pixels[b++] & 255, this.pixels[b++] & 255, this.pixels[b++] & 255);
                this.usedEntry[e] = !0, this.indexedPixels[c] = e
            }
            this.pixels = null, this.colorDepth = 8, this.palSize = 7, this.transparent !== null && (this.transIndex = this.findClosest(this.transparent))
        }, b.prototype.findClosest = function(e) {
            if (this.colorTab === null) return -1;
            var k = (e & 16711680) >> 16,
                l = (e & 65280) >> 8,
                m = e & 255,
                c = 0,
                d = 16777216,
                j = this.colorTab.length;
            for (var a = 0; a < j;) {
                var f = k - (this.colorTab[a++] & 255),
                    g = l - (this.colorTab[a++] & 255),
                    h = m - (this.colorTab[a] & 255),
                    i = f * f + g * g + h * h,
                    b = parseInt(a / 3);
                this.usedEntry[b] && i < d && (d = i, c = b), a++
            }
            return c
        }, b.prototype.getImagePixels = function() {
            var a = this.width,
                g = this.height;
            this.pixels = new Uint8Array(a * g * 3);
            var b = this.image,
                c = 0;
            for (var d = 0; d < g; d++)
                for (var e = 0; e < a; e++) {
                    var f = d * a * 4 + e * 4;
                    this.pixels[c++] = b[f], this.pixels[c++] = b[f + 1], this.pixels[c++] = b[f + 2]
                }
        }, b.prototype.writeGraphicCtrlExt = function() {
            this.out.writeByte(33), this.out.writeByte(249), this.out.writeByte(4);
            var b, a;
            this.transparent === null ? (b = 0, a = 0) : (b = 1, a = 2), this.dispose >= 0 && (a = dispose & 7), a <<= 2, this.out.writeByte(0 | a | 0 | b), this.writeShort(this.delay), this.out.writeByte(this.transIndex), this.out.writeByte(0)
        }, b.prototype.writeImageDesc = function() {
            this.out.writeByte(44), this.writeShort(0), this.writeShort(0), this.writeShort(this.width), this.writeShort(this.height), this.firstFrame ? this.out.writeByte(0) : this.out.writeByte(128 | this.palSize)
        }, b.prototype.writeLSD = function() {
            this.writeShort(this.width), this.writeShort(this.height), this.out.writeByte(240 | this.palSize), this.out.writeByte(0), this.out.writeByte(0)
        }, b.prototype.writeNetscapeExt = function() {
            this.out.writeByte(33), this.out.writeByte(255), this.out.writeByte(11), this.out.writeUTFBytes('NETSCAPE2.0'), this.out.writeByte(3), this.out.writeByte(1), this.writeShort(this.repeat), this.out.writeByte(0)
        }, b.prototype.writePalette = function() {
            this.out.writeBytes(this.colorTab);
            var b = 768 - this.colorTab.length;
            for (var a = 0; a < b; a++) this.out.writeByte(0)
        }, b.prototype.writeShort = function(a) {
            this.out.writeByte(a & 255), this.out.writeByte(a >> 8 & 255)
        }, b.prototype.writePixels = function() {
            var a = new g(this.width, this.height, this.indexedPixels, this.colorDepth);
            a.encode(this.out)
        }, b.prototype.stream = function() {
            return this.out
        }, e.exports = b
    }), a.define('/LZWEncoder.js', function(e, g, h, i) {
        function f(y, D, C, B) {
            function w(a, b) {
                r[f++] = a, f >= 254 && t(b)
            }

            function x(b) {
                u(a), k = i + 2, j = !0, l(i, b)
            }

            function u(b) {
                for (var a = 0; a < b; ++a) h[a] = -1
            }

            function A(z, r) {
                var g, t, d, e, y, w, s;
                for (q = z, j = !1, n_bits = q, m = p(n_bits), i = 1 << z - 1, o = i + 1, k = i + 2, f = 0, e = v(), s = 0, g = a; g < 65536; g *= 2) ++s;
                s = 8 - s, w = a, u(w), l(i, r);
                a: while ((t = v()) != c) {
                    if (g = (t << b) + e, d = t << s ^ e, h[d] === g) {
                        e = n[d];
                        continue
                    }
                    if (h[d] >= 0) {
                        y = w - d, d === 0 && (y = 1);
                        do
                            if ((d -= y) < 0 && (d += w), h[d] === g) {
                                e = n[d];
                                continue a
                            }
                        while (h[d] >= 0)
                    }
                    l(e, r), e = t, k < 1 << b ? (n[d] = k++, h[d] = g) : x(r)
                }
                l(e, r), l(o, r)
            }

            function z(a) {
                a.writeByte(s), remaining = y * D, curPixel = 0, A(s + 1, a), a.writeByte(0)
            }

            function t(a) {
                f > 0 && (a.writeByte(f), a.writeBytes(r, 0, f), f = 0)
            }

            function p(a) {
                return (1 << a) - 1
            }

            function v() {
                if (remaining === 0) return c;
                --remaining;
                var a = C[curPixel++];
                return a & 255
            }

            function l(a, c) {
                g &= d[e], e > 0 ? g |= a << e : g = a, e += n_bits;
                while (e >= 8) w(g & 255, c), g >>= 8, e -= 8;
                if ((k > m || j) && (j ? (m = p(n_bits = q), j = !1) : (++n_bits, n_bits == b ? m = 1 << b : m = p(n_bits))), a == o) {
                    while (e > 0) w(g & 255, c), g >>= 8, e -= 8;
                    t(c)
                }
            }
            var s = Math.max(2, B),
                r = new Uint8Array(256),
                h = new Int32Array(a),
                n = new Int32Array(a),
                g, e = 0,
                f, k = 0,
                m, j = !1,
                q, i, o;
            this.encode = z
        }
        var c = -1,
            b = 12,
            a = 5003,
            d = [0, 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535];
        e.exports = f
    }), a.define('/TypedNeuQuant.js', function(A, F, E, D) {
        function C(A, B) {
            function I() {
                o = [], q = new Int32Array(256), t = new Int32Array(a), y = new Int32Array(a), z = new Int32Array(a >> 3);
                var c, d;
                for (c = 0; c < a; c++) d = (c << b + 8) / a, o[c] = new Float64Array([d, d, d, 0]), y[c] = e / a, t[c] = 0
            }

            function J() {
                for (var c = 0; c < a; c++) o[c][0] >>= b, o[c][1] >>= b, o[c][2] >>= b, o[c][3] = c
            }

            function K(b, a, c, e, f) {
                o[a][0] -= b * (o[a][0] - c) / d, o[a][1] -= b * (o[a][1] - e) / d, o[a][2] -= b * (o[a][2] - f) / d
            }

            function L(j, e, n, l, k) {
                var h = Math.abs(e - j),
                    i = Math.min(e + j, a),
                    g = e + 1,
                    f = e - 1,
                    m = 1,
                    b, d;
                while (g < i || f > h) d = z[m++], g < i && (b = o[g++], b[0] -= d * (b[0] - n) / c, b[1] -= d * (b[1] - l) / c, b[2] -= d * (b[2] - k) / c), f > h && (b = o[f--], b[0] -= d * (b[0] - n) / c, b[1] -= d * (b[1] - l) / c, b[2] -= d * (b[2] - k) / c)
            }

            function C(p, s, q) {
                var h = 2147483647,
                    k = h,
                    d = -1,
                    m = d,
                    c, j, e, n, l;
                for (c = 0; c < a; c++) j = o[c], e = Math.abs(j[0] - p) + Math.abs(j[1] - s) + Math.abs(j[2] - q), e < h && (h = e, d = c), n = e - (t[c] >> i - b), n < k && (k = n, m = c), l = y[c] >> g, y[c] -= l, t[c] += l << f;
                return y[d] += x, t[d] -= r, m
            }

            function D() {
                var d, b, e, c, h, g, f = 0,
                    i = 0;
                for (d = 0; d < a; d++) {
                    for (e = o[d], h = d, g = e[1], b = d + 1; b < a; b++) c = o[b], c[1] < g && (h = b, g = c[1]);
                    if (c = o[h], d != h && (b = c[0], c[0] = e[0], e[0] = b, b = c[1], c[1] = e[1], e[1] = b, b = c[2], c[2] = e[2], e[2] = b, b = c[3], c[3] = e[3], e[3] = b), g != f) {
                        for (q[f] = i + d >> 1, b = f + 1; b < g; b++) q[b] = d;
                        f = g, i = d
                    }
                }
                for (q[f] = i + n >> 1, b = f + 1; b < 256; b++) q[b] = n
            }

            function E(j, i, k) {
                var b, d, c, e = 1e3,
                    h = -1,
                    f = q[i],
                    g = f - 1;
                while (f < a || g >= 0) f < a && (d = o[f], c = d[1] - i, c >= e ? f = a : (f++, c < 0 && (c = -c), b = d[0] - j, b < 0 && (b = -b), c += b, c < e && (b = d[2] - k, b < 0 && (b = -b), c += b, c < e && (e = c, h = d[3])))), g >= 0 && (d = o[g], c = i - d[1], c >= e ? g = -1 : (g--, c < 0 && (c = -c), b = d[0] - j, b < 0 && (b = -b), c += b, c < e && (b = d[2] - k, b < 0 && (b = -b), c += b, c < e && (e = c, h = d[3]))));
                return h
            }

            function F() {
                var c, f = A.length,
                    D = 30 + (B - 1) / 3,
                    y = f / (3 * B),
                    q = ~~(y / w),
                    n = d,
                    o = u,
                    a = o >> h;
                for (a <= 1 && (a = 0), c = 0; c < a; c++) z[c] = n * ((a * a - c * c) * m / (a * a));
                var i;
                f < s ? (B = 1, i = 3) : f % l !== 0 ? i = 3 * l : f % k !== 0 ? i = 3 * k : f % p !== 0 ? i = 3 * p : i = 3 * j;
                var r, t, x, e, g = 0;
                c = 0;
                while (c < y)
                    if (r = (A[g] & 255) << b, t = (A[g + 1] & 255) << b, x = (A[g + 2] & 255) << b, e = C(r, t, x), K(n, e, r, t, x), a !== 0 && L(a, e, r, t, x), g += i, g >= f && (g -= f), c++, q === 0 && (q = 1), c % q === 0)
                        for (n -= n / D, o -= o / v, a = o >> h, a <= 1 && (a = 0), e = 0; e < a; e++) z[e] = n * ((a * a - e * e) * m / (a * a))
            }

            function G() {
                I(), F(), J(), D()
            }

            function H() {
                var b = [],
                    g = [];
                for (var c = 0; c < a; c++) g[o[c][3]] = c;
                var d = 0;
                for (var e = 0; e < a; e++) {
                    var f = g[e];
                    b[d++] = o[f][0], b[d++] = o[f][1], b[d++] = o[f][2]
                }
                return b
            }
            var o, q, t, y, z;
            this.buildColormap = G, this.getColormap = H, this.lookupRGB = E
        }
        var w = 100,
            a = 256,
            n = a - 1,
            b = 4,
            i = 16,
            e = 1 << i,
            f = 10,
            B = 1 << f,
            g = 10,
            x = e >> g,
            r = e << f - g,
            z = a >> 3,
            h = 6,
            t = 1 << h,
            u = z * t,
            v = 30,
            o = 10,
            d = 1 << o,
            q = 8,
            m = 1 << q,
            y = o + q,
            c = 1 << y,
            l = 499,
            k = 491,
            p = 487,
            j = 503,
            s = 3 * j;
        A.exports = C
    }), a('/gif.worker.coffee')
}.call(this, this));