(function() {
    /*

 Copyright The Closure Library Authors.
 SPDX-License-Identifier: Apache-2.0
*/
    'use strict';
    function n(a) {
        var b = 0;
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        return a
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    ;
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        ;
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        ;
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        function e() {
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        function f(c) {
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            )
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        if (a)
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            this.g.push(c)
        }
        ;
        var h = u.setTimeout;
        e.prototype.i = function(c) {
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        }
        ;
        e.prototype.l = function() {
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                var c = this.g;
                this.g = [];
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                    var g = c[d];
                    c[d] = null;
                    try {
                        g()
                    } catch (k) {
                        this.j(k)
                    }
                }
            }
            this.g = null
        }
        ;
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            this.i(function() {
                throw c;
            })
        }
        ;
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                    k.call(d, m))
                }
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            var d = this
              , g = !1;
            return {
                resolve: c(this.A),
                reject: c(this.l)
            }
        }
        ;
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            else if (c instanceof b)
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                d ? this.v(c) : this.m(c)
            }
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        ;
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                d = c.then
            } catch (g) {
                this.l(g);
                return
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            "function" == typeof d ? this.D(d, c) : this.m(c)
        }
        ;
        b.prototype.l = function(c) {
            this.u(2, c)
        }
        ;
        b.prototype.m = function(c) {
            this.u(1, c)
        }
        ;
        b.prototype.u = function(c, d) {
            if (0 != this.h)
                throw Error("Cannot settle(" + c + ", " + d + "): Promise already settled in state" + this.h);
            this.h = c;
            this.i = d;
            2 === this.h && this.B();
            this.H()
        }
        ;
        b.prototype.B = function() {
            var c = this;
            h(function() {
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                    var d = u.console;
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                }
            }, 1)
        }
        ;
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                return !0;
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                cancelable: !0
            }) : "function" === typeof d ? c = new d("unhandledrejection",{
                cancelable: !0
            }) : (c = u.document.createEvent("CustomEvent"),
            c.initCustomEvent("unhandledrejection", !1, !0, c));
            c.promise = this;
            c.reason = this.i;
            return g(c)
        }
        ;
        b.prototype.H = function() {
            if (null != this.g) {
                for (var c = 0; c < this.g.length; ++c)
                    l.h(this.g[c]);
                this.g = null
            }
        }
        ;
        var l = new e;
        b.prototype.C = function(c) {
            var d = this.j();
            c.s(d.resolve, d.reject)
        }
        ;
        b.prototype.D = function(c, d) {
            var g = this.j();
            try {
                c.call(d, g.resolve, g.reject)
            } catch (k) {
                g.reject(k)
            }
        }
        ;
        b.prototype.then = function(c, d) {
            function g(p, r) {
                return "function" == typeof p ? function(E) {
                    try {
                        k(p(E))
                    } catch (F) {
                        m(F)
                    }
                }
                : r
            }
            var k, m, G = new b(function(p, r) {
                k = p;
                m = r
            }
            );
            this.s(g(c, k), g(d, m));
            return G
        }
        ;
        b.prototype.catch = function(c) {
            return this.then(void 0, c)
        }
        ;
        b.prototype.s = function(c, d) {
            function g() {
                switch (k.h) {
                case 1:
                    c(k.i);
                    break;
                case 2:
                    d(k.i);
                    break;
                default:
                    throw Error("Unexpected state: " + k.h);
                }
            }
            var k = this;
            null == this.g ? l.h(g) : this.g.push(g);
            this.o = !0
        }
        ;
        b.resolve = f;
        b.reject = function(c) {
            return new b(function(d, g) {
                g(c)
            }
            )
        }
        ;
        b.race = function(c) {
            return new b(function(d, g) {
                for (var k = x(c), m = k.next(); !m.done; m = k.next())
                    f(m.value).s(d, g)
            }
            )
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        ;
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              , g = d.next();
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                        p[E] = F;
                        r--;
                        0 == r && k(p)
                    }
                }
                var p = []
                  , r = 0;
                do
                    p.push(void 0),
                    r++,
                    f(g.value).s(G(p.length - 1), m),
                    g = d.next();
                while (!g.done)
            }
            )
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        ;
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    var K = "function" == typeof Object.assign ? Object.assign : function(a, b) {
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                for (var h in f)
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    ;
    v("Object.assign", function(a) {
        return a || K
    });
    var L = this || self;
    var M = {
        facingMode: "user",
        width: 640,
        height: 480
    };
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        this.i = 0;
        this.h = Object.assign(Object.assign({}, M), b)
    }
    N.prototype.stop = function() {
        var a = this, b, e, f, h;
        return J(new I(new B(function(l) {
            if (a.g) {
                b = a.g.getTracks();
                e = x(b);
                for (f = e.next(); !f.done; f = e.next())
                    h = f.value,
                    h.stop();
                a.g = void 0
            }
            l.j = 0
        }
        )))
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    ;
    N.prototype.start = function() {
        var a = this, b;
        return J(new I(new B(function(e) {
            navigator.mediaDevices && navigator.mediaDevices.getUserMedia || alert("No navigator.mediaDevices.getUserMedia exists.");
            b = a.h;
            var voptions = {
                video: {
                    deviceId: b.deviceId,
                    width: b.width,
                    height: b.height
                }};
            if(b.deviceId==''){
            	voptions = {
            	video: {
                    width: b.width,
                    height: b.height
                }};
            }
            
            return e.return(navigator.mediaDevices.getUserMedia(voptions).then(function(f) {
                O(a, f)
            }).catch(function(f) {
                var h = "ERROR! Failed to acquire camera feed: " + f;
                console.error(h);
                alert(h);
                throw f;
            }))
        }
        )))
    }
    ;
    function P(a) {
        window.requestAnimationFrame(function() {
            Q(a)
        })
    }
    function O(a, b) {
        a.g = b;
        a.video.srcObject = b;
        a.video.onloadedmetadata = function() {
            a.video.play();
            P(a)
        }
    }
    function Q(a) {
        var b = null;
        a.video.paused || a.video.currentTime === a.i || (a.i = a.video.currentTime,
        b = a.h.onFrame());
        b ? b.then(function() {
            P(a)
        }) : P(a)
    }
    var R = ["Camera"]
      , S = L;
    R[0]in S || "undefined" == typeof S.execScript || S.execScript("var " + R[0]);
    for (var T; R.length && (T = R.shift()); )
        R.length || void 0 === N ? S[T] && S[T] !== Object.prototype[T] ? S = S[T] : S = S[T] = {} : S[T] = N;
}
).call(this);