apng-canvas.js

/* eslint-disable */

const self = module.exports;
/**
 * apng-canvas v2.1.2
 *
 * @copyright 2011-2019 David Mzareulyan
 * @link https://github.com/davidmz/apng-canvas
 * @license MIT
 */
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                                                (r =
                                                    Math.round(
                                                        (e.height * i) / e.width
                                                    ) + o)),
                                            "" != r &&
                                            "" == n &&
                                            ((i = parseFloat(r)),
                                                (o = r.match(/\D+$/)[0]),
                                                (n =
                                                    Math.round(
                                                        (e.width * i) / e.height
                                                    ) + o)),
                                            (e.style.width = n),
                                            (e.style.height = r);
                                        var a = s.parentNode;
                                        a.insertBefore(e, s),
                                            a.removeChild(s),
                                            t.addContext(e.getContext("2d")),
                                            t.play();
                                    },
                                    function () {
                                        s.setAttribute("data-is-apng", "no");
                                    }
                                )
                            );
                        }),
                        (i.releaseCanvas = function (t) {
                            var e = t.getContext("2d");
                            "_apng_animation" in e &&
                                e._apng_animation.removeContext(e);
                        });
                }).call(
                    this,
                    "undefined" != typeof self
                        ? self
                        : "undefined" != typeof window
                            ? window
                            : {}
                );
            },
            { "./loader": 6, "./parser": 7, "./support-test": 8 },
        ],
        6: [
            function (t, e, n) {
                "use strict";
                var i = i || t("es6-promise").Promise;
                e.exports = function (r) {
                    return new i(function (t, e) {
                        var n = new XMLHttpRequest();
                        n.open("GET", r),
                            (n.responseType = "arraybuffer"),
                            (n.onload = function () {
                                200 == this.status ? t(this.response) : e(this);
                            }),
                            n.send();
                    });
                };
            },
            { "es6-promise": 1 },
        ],
        7: [
            function (t, e, n) {
                "use strict";
                var r = r || t("es6-promise").Promise,
                    m = t("./animation"),
                    o = t("./crc32"),
                    g = new Uint8Array([137, 80, 78, 71, 13, 10, 26, 10]);
                e.exports = function (t) {
                    var A = new Uint8Array(t);
                    return new r(function (t, e) {
                        for (var n = 0; n < g.length; n++)
                            if (g[n] != A[n])
                                return void e(
                                    "Not a PNG file (invalid file signature)"
                                );
                        var r = !1;
                        if (
                            (w(A, function (t) {
                                return "acTL" != t || !(r = !0);
                            }),
                                r)
                        ) {
                            var a = [],
                                s = [],
                                u = null,
                                c = null,
                                f = new m();
                            if (
                                (w(A, function (t, e, n, r) {
                                    switch (t) {
                                        case "IHDR":
                                            (u = e.subarray(n + 8, n + 8 + r)),
                                                (f.width = y(e, n + 8)),
                                                (f.height = y(e, n + 12));
                                            break;
                                        case "acTL":
                                            f.numPlays = y(e, n + 8 + 4);
                                            break;
                                        case "fcTL":
                                            c && f.frames.push(c),
                                                ((c = {}).width = y(
                                                    e,
                                                    n + 8 + 4
                                                )),
                                                (c.height = y(e, n + 8 + 8)),
                                                (c.left = y(e, n + 8 + 12)),
                                                (c.top = y(e, n + 8 + 16));
                                            var i = _(e, n + 8 + 20),
                                                o = _(e, n + 8 + 22);
                                            0 == o && (o = 100),
                                                (c.delay = (1e3 * i) / o),
                                                c.delay <= 10 &&
                                                (c.delay = 100),
                                                (f.playTime += c.delay),
                                                (c.disposeOp = b(
                                                    e,
                                                    n + 8 + 24
                                                )),
                                                (c.blendOp = b(e, n + 8 + 25)),
                                                (c.dataParts = []);
                                            break;
                                        case "fdAT":
                                            c &&
                                                c.dataParts.push(
                                                    e.subarray(
                                                        n + 8 + 4,
                                                        n + 8 + r
                                                    )
                                                );
                                            break;
                                        case "IDAT":
                                            c &&
                                                c.dataParts.push(
                                                    e.subarray(n + 8, n + 8 + r)
                                                );
                                            break;
                                        case "IEND":
                                            s.push(E(e, n, 12 + r));
                                            break;
                                        default:
                                            a.push(E(e, n, 12 + r));
                                    }
                                }),
                                    c && f.frames.push(c),
                                    0 != f.frames.length)
                            )
                                for (
                                    var i = 0,
                                    o = new Blob(a),
                                    h = new Blob(s),
                                    l = 0;
                                    l < f.frames.length;
                                    l++
                                ) {
                                    c = f.frames[l];
                                    var d = [];
                                    d.push(g),
                                        u.set(P(c.width), 0),
                                        u.set(P(c.height), 4),
                                        d.push(x("IHDR", u)),
                                        d.push(o);
                                    for (var p = 0; p < c.dataParts.length; p++)
                                        d.push(x("IDAT", c.dataParts[p]));
                                    d.push(h);
                                    var v = URL.createObjectURL(
                                        new Blob(d, { type: "image/png" })
                                    );
                                    delete c.dataParts,
                                        (d = null),
                                        (c.img = document.createElement("img")),
                                        (c.img.onload = function () {
                                            URL.revokeObjectURL(this.src),
                                                ++i == f.frames.length && t(f);
                                        }),
                                        (c.img.onerror = function () {
                                            e("Image creation error");
                                        }),
                                        (c.img.src = v);
                                }
                            else e("Not an animated PNG");
                        } else e("Not an animated PNG");
                    });
                };
                var w = function (t, e) {
                    var n = 8;
                    do {
                        var r = y(t, n),
                            i = a(t, n + 4, 4),
                            o = e(i, t, n, r);
                        n += 12 + r;
                    } while (!1 !== o && "IEND" != i && n < t.length);
                },
                    y = function (t, e) {
                        var n = 0;
                        n += (t[0 + e] << 24) >>> 0;
                        for (var r = 1; r < 4; r++)
                            n += t[r + e] << (8 * (3 - r));
                        return n;
                    },
                    _ = function (t, e) {
                        for (var n = 0, r = 0; r < 2; r++)
                            n += t[r + e] << (8 * (1 - r));
                        return n;
                    },
                    b = function (t, e) {
                        return t[e];
                    },
                    E = function (t, e, n) {
                        var r = new Uint8Array(n);
                        return r.set(t.subarray(e, e + n)), r;
                    },
                    a = function (t, e, n) {
                        var r = Array.prototype.slice.call(
                            t.subarray(e, e + n)
                        );
                        return String.fromCharCode.apply(String, r);
                    },
                    P = function (t) {
                        return [
                            (t >>> 24) & 255,
                            (t >>> 16) & 255,
                            (t >>> 8) & 255,
                            255 & t,
                        ];
                    },
                    x = function (t, e) {
                        var n = t.length + e.length,
                            r = new Uint8Array(new ArrayBuffer(n + 8));
                        r.set(P(e.length), 0),
                            r.set(
                                (function (t) {
                                    for (var e = [], n = 0; n < t.length; n++)
                                        e.push(t.charCodeAt(n));
                                    return e;
                                })(t),
                                4
                            ),
                            r.set(e, 8);
                        var i = o(r, 4, n);
                        return r.set(P(i), n + 4), r;
                    };
            },
            { "./animation": 3, "./crc32": 4, "es6-promise": 1 },
        ],
        8: [
            function (o, a, t) {
                (function (t) {
                    "use strict";
                    var e,
                        n,
                        r = r || o("es6-promise").Promise,
                        i =
                            ((e = function (e) {
                                var n = document.createElement("canvas"),
                                    r = {
                                        TypedArrays: "ArrayBuffer" in t,
                                        BlobURLs: "URL" in t,
                                        requestAnimationFrame:
                                            "requestAnimationFrame" in t,
                                        pageProtocol:
                                            "http:" == location.protocol ||
                                            "https:" == location.protocol,
                                        canvas:
                                            "getContext" in
                                            document.createElement("canvas"),
                                        APNG: !1,
                                    };
                                if (r.canvas) {
                                    var i = new Image();
                                    (i.onload = function () {
                                        var t = n.getContext("2d");
                                        t.drawImage(i, 0, 0),
                                            (r.APNG =
                                                0 ===
                                                t.getImageData(0, 0, 1, 1)
                                                    .data[3]),
                                            e(r);
                                    }),
                                        (i.src =
                                            "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAACGFjVEwAAAABAAAAAcMq2TYAAAANSURBVAiZY2BgYPgPAAEEAQB9ssjfAAAAGmZjVEwAAAAAAAAAAQAAAAEAAAAAAAAAAAD6A+gBAbNU+2sAAAARZmRBVAAAAAEImWNgYGBgAAAABQAB6MzFdgAAAABJRU5ErkJggg==");
                                } else e(r);
                            }),
                                (n = null),
                                function (t) {
                                    return (n = n || new r(e)), t && n.then(t), n;
                                });
                    a.exports = {
                        checkNativeFeatures: i,
                        ifNeeded: function (r) {
                            return (
                                void 0 === r && (r = !1),
                                i().then(function (t) {
                                    if (t.APNG && !r) reject();
                                    else {
                                        var e = !0;
                                        for (var n in t)
                                            t.hasOwnProperty(n) &&
                                                "APNG" != n &&
                                                (e = e && t[n]);
                                    }
                                })
                            );
                        },
                    };
                }).call(
                    this,
                    "undefined" != typeof self
                        ? self
                        : "undefined" != typeof window
                            ? window
                            : {}
                );
            },
            { "es6-promise": 1 },
        ],
    },
    {},
    [5]
);