前端图片压缩(纯js)

html代码:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>localResizeIMG</title>
<!--引入 lrz 插件 用于压缩图片-->
<script type="text/javascript" src="lrz.bundle.js"></script>
</head>
<body>
<input type="file" accept="image/jpeg" capture="camera" onchange="previewFile()">
</body>
<script>
function previewFile(){
/* 压缩图片 */
lrz(document.querySelector('input[type=file]').files[0], {
quality: 0.4 //设置压缩率
}).then(function (rst) {
/* 处理成功后执行 */
//rst.formData.append('base64img', rst.base64); // 添加额外参数
console.log(rst.file);
//预览
let reader = new FileReader();
reader.readAsDataURL(rst.file);
reader.onload = function(e) {
var img = document.createElement("img");
img.style.width = '500px';
img.src = e.target.result;
document.body.appendChild(img);
}
}).catch(function (err) {
/* 处理失败后执行 */
}).always(function () {
/* 必然执行 */
})
}
</script>
</html>
注:上面压缩后返回rst.file(是个Blob对象)可通过form表单直接传服务端,自定义文件名方式:
var form = new FormData(); // FormData 对象
form.append("file", rst.file, "file_"+Date.parse(new Date())+".jpg"); // 文件对象
lrz.bundle.js:
! function(e, t) {
if("object" == typeof exports && "object" == typeof module) module.exports = t();
else if("function" == typeof define && define.amd) define([], t);
else {
var n = t();
for(var r in n)("object" == typeof exports ? exports : e)[r] = n[r]
}
}(this, function() {
return function(e) {
function t(n) {
if(r[n]) return r[n].exports;
var i = r[n] = {
exports: {},
id: n,
loaded: !1
};
return e[n].call(i.exports, i, i.exports, t), i.loaded = !0, i.exports
}
var n = window.webpackJsonp;
window.webpackJsonp = function(r, o) {
for(var a, s, u = 0, l = []; u < r.length; u++) s = r[u], i[s] && l.push.apply(l, i[s]), i[s] = 0;
for(a in o) e[a] = o[a];
for(n && n(r, o); l.length;) l.shift().call(null, t)
};
var r = {},
i = {
0: 0
};
return t.e = function(e, n) {
if(0 === i[e]) return n.call(null, t);
if(void 0 !== i[e]) i[e].push(n);
else {
i[e] = [n];
var r = document.getElementsByTagName("head")[0],
o = document.createElement("script");
o.type = "text/javascript", o.charset = "utf-8", o.async = !0, o.src = t.p + "" + ({}[e] || e) + ".chunk.js", r.appendChild(o)
}
}, t.m = e, t.c = r, t.p = "", t(0)
}([function(e, t, n) {
function r(e, t) {
var n = this;
if(!e) throw new Error("没有收到图片,可能的解决方案:https://github.com/think2011/localResizeIMG/issues/7");
t = t || {}, n.defaults = {
width: null,
height: null,
fieldName: "file",
quality: .7
}, n.file = e;
for(var r in t) t.hasOwnProperty(r) && (n.defaults[r] = t[r]);
return this.init()
} function i(e) {
var t = null;
return t = e ? [].filter.call(document.scripts, function(t) {
return -1 !== t.src.indexOf(e)
})[0] : document.scripts[document.scripts.length - 1], t ? t.src.substr(0, t.src.lastIndexOf("/")) : null
} function o(e) {
var t;
t = e.split(",")[0].indexOf("base64") >= 0 ? atob(e.split(",")[1]) : unescape(e.split(",")[1]);
for(var n = e.split(",")[0].split(":")[1].split(";")[0], r = new Uint8Array(t.length), i = 0; i < t.length; i++) r[i] = t.charCodeAt(i);
return new s.Blob([r.buffer], {
type: n
})
}
n.p = i("lrz") + "/", window.URL = window.URL || window.webkitURL;
var a = n(1),
s = n(4),
u = n(5),
l = function(e) {
var t = /OS (\d)_.* like Mac OS X/g.exec(e),
n = /Android (\d.*?);/g.exec(e) || /Android\/(\d.*?) /g.exec(e);
return {
oldIOS: t ? +t.pop() < 8 : !1,
oldAndroid: n ? +n.pop().substr(0, 3) < 4.5 : !1,
iOS: /\(i[^;]+;( U;)? CPU.+Mac OS X/.test(e),
android: /Android/g.test(e),
mQQBrowser: /MQQBrowser/g.test(e)
}
}(navigator.userAgent);
r.prototype.init = function() {
var e = this,
t = e.file,
n = "string" == typeof t,
r = /^data:/.test(t),
i = new Image,
u = document.createElement("canvas"),
l = n ? t : URL.createObjectURL(t);
if(e.img = i, e.blob = l, e.canvas = u, n ? e.fileName = r ? "base64.jpg" : t.split("/").pop() : e.fileName = t.name, !document.createElement("canvas").getContext) throw new Error("浏览器不支持canvas");
return new a(function(n, a) {
i.onerror = function() {
var e = new Error("加载图片文件失败");
throw a(e), e
}, i.onload = function() {
e._getBase64().then(function(e) {
if(e.length < 10) {
var t = new Error("生成base64失败");
throw a(t), t
}
return e
}).then(function(r) {
var i = null;
"object" == typeof e.file && r.length > e.file.size ? (i = new FormData, t = e.file) : (i = new s.FormData, t = o(r)), i.append(e.defaults.fieldName, t, e.fileName.replace(/\..+/g, ".jpg")), n({
formData: i,
fileLen: +t.size,
base64: r,
base64Len: r.length,
origin: e.file,
file: t
});
for(var a in e) e.hasOwnProperty(a) && (e[a] = null);
URL.revokeObjectURL(e.blob)
})
}, !r && (i.crossOrigin = "*"), i.src = l
})
}, r.prototype._getBase64 = function() {
var e = this,
t = e.img,
n = e.file,
r = e.canvas;
return new a(function(i) {
try {
u.getData("object" == typeof n ? n : t, function() {
e.orientation = u.getTag(this, "Orientation"), e.resize = e._getResize(), e.ctx = r.getContext("2d"), r.width = e.resize.width, r.height = e.resize.height, e.ctx.fillStyle = "#fff", e.ctx.fillRect(0, 0, r.width, r.height), l.oldIOS ? e._createBase64ForOldIOS().then(i) : e._createBase64().then(i)
})
} catch(o) {
throw new Error(o)
}
})
}, r.prototype._createBase64ForOldIOS = function() {
var e = this,
t = e.img,
r = e.canvas,
i = e.defaults,
o = e.orientation;
return new a(function(e) {
n.e(1, function(n) {
var a = [n(6)];
(function(n) {
var a = new n(t);
"5678".indexOf(o) > -1 ? a.render(r, {
width: r.height,
height: r.width,
orientation: o
}) : a.render(r, {
width: r.width,
height: r.height,
orientation: o
}), e(r.toDataURL("image/jpeg", i.quality))
}).apply(null, a)
})
})
}, r.prototype._createBase64 = function() {
var e = this,
t = e.resize,
r = e.img,
i = e.canvas,
o = e.ctx,
s = e.defaults,
u = e.orientation;
switch(u) {
case 3:
o.rotate(180 * Math.PI / 180), o.drawImage(r, -t.width, -t.height, t.width, t.height);
break;
case 6:
o.rotate(90 * Math.PI / 180), o.drawImage(r, 0, -t.width, t.height, t.width);
break;
case 8:
o.rotate(270 * Math.PI / 180), o.drawImage(r, -t.height, 0, t.height, t.width);
break;
case 2:
o.translate(t.width, 0), o.scale(-1, 1), o.drawImage(r, 0, 0, t.width, t.height);
break;
case 4:
o.translate(t.width, 0), o.scale(-1, 1), o.rotate(180 * Math.PI / 180), o.drawImage(r, -t.width, -t.height, t.width, t.height);
break;
case 5:
o.translate(t.width, 0), o.scale(-1, 1), o.rotate(90 * Math.PI / 180), o.drawImage(r, 0, -t.width, t.height, t.width);
break;
case 7:
o.translate(t.width, 0), o.scale(-1, 1), o.rotate(270 * Math.PI / 180), o.drawImage(r, -t.height, 0, t.height, t.width);
break;
default:
o.drawImage(r, 0, 0, t.width, t.height)
}
return new a(function(e) {
l.oldAndroid || l.mQQBrowser || !navigator.userAgent ? n.e(2, function(t) {
var n = [t(7)];
(function(t) {
var n = new t,
r = o.getImageData(0, 0, i.width, i.height);
e(n.encode(r, 100 * s.quality))
}).apply(null, n)
}) : e(i.toDataURL("image/jpeg", s.quality))
})
}, r.prototype._getResize = function() {
var e = this,
t = e.img,
n = e.defaults,
r = n.width,
i = n.height,
o = e.orientation,
a = {
width: t.width,
height: t.height
};
if("5678".indexOf(o) > -1 && (a.width = t.height, a.height = t.width), a.width < r || a.height < i) return a;
var s = a.width / a.height;
for(r && i ? s >= r / i ? a.width > r && (a.width = r, a.height = Math.ceil(r / s)) : a.height > i && (a.height = i, a.width = Math.ceil(i * s)) : r ? r < a.width && (a.width = r, a.height = Math.ceil(r / s)) : i && i < a.height && (a.width = Math.ceil(i * s), a.height = i); a.width >= 3264 || a.height >= 2448;) a.width *= .8, a.height *= .8;
return a
}, window.lrz = function(e, t) {
return new r(e, t)
}, window.lrz.version = "4.9.40", e.exports = window.lrz
}, function(e, t, n) {
(function(t) {
! function(n) {
function r(e, t) {
return function() {
e.apply(t, arguments)
}
} function i(e) {
if("object" != typeof this) throw new TypeError("Promises must be constructed via new");
if("function" != typeof e) throw new TypeError("not a function");
this._state = null, this._value = null, this._deferreds = [], c(e, r(a, this), r(s, this))
} function o(e) {
var t = this;
return null === this._state ? void this._deferreds.push(e) : void f(function() {
var n = t._state ? e.onFulfilled : e.onRejected;
if(null === n) return void(t._state ? e.resolve : e.reject)(t._value);
var r;
try {
r = n(t._value)
} catch(i) {
return void e.reject(i)
}
e.resolve(r)
})
} function a(e) {
try {
if(e === this) throw new TypeError("A promise cannot be resolved with itself.");
if(e && ("object" == typeof e || "function" == typeof e)) {
var t = e.then;
if("function" == typeof t) return void c(r(t, e), r(a, this), r(s, this))
}
this._state = !0, this._value = e, u.call(this)
} catch(n) {
s.call(this, n)
}
} function s(e) {
this._state = !1, this._value = e, u.call(this)
} function u() {
for(var e = 0, t = this._deferreds.length; t > e; e++) o.call(this, this._deferreds[e]);
this._deferreds = null
} function l(e, t, n, r) {
this.onFulfilled = "function" == typeof e ? e : null, this.onRejected = "function" == typeof t ? t : null, this.resolve = n, this.reject = r
} function c(e, t, n) {
var r = !1;
try {
e(function(e) {
r || (r = !0, t(e))
}, function(e) {
r || (r = !0, n(e))
})
} catch(i) {
if(r) return;
r = !0, n(i)
}
}
var f = "function" == typeof t && t || function(e) {
setTimeout(e, 1)
},
d = Array.isArray || function(e) {
return "[object Array]" === Object.prototype.toString.call(e)
};
i.prototype["catch"] = function(e) {
return this.then(null, e)
}, i.prototype.then = function(e, t) {
var n = this;
return new i(function(r, i) {
o.call(n, new l(e, t, r, i))
})
}, i.all = function() {
var e = Array.prototype.slice.call(1 === arguments.length && d(arguments[0]) ? arguments[0] : arguments);
return new i(function(t, n) {
function r(o, a) {
try {
if(a && ("object" == typeof a || "function" == typeof a)) {
var s = a.then;
if("function" == typeof s) return void s.call(a, function(e) {
r(o, e)
}, n)
}
e[o] = a, 0 === --i && t(e)
} catch(u) {
n(u)
}
}
if(0 === e.length) return t([]);
for(var i = e.length, o = 0; o < e.length; o++) r(o, e[o])
})
}, i.resolve = function(e) {
return e && "object" == typeof e && e.constructor === i ? e : new i(function(t) {
t(e)
})
}, i.reject = function(e) {
return new i(function(t, n) {
n(e)
})
}, i.race = function(e) {
return new i(function(t, n) {
for(var r = 0, i = e.length; i > r; r++) e[r].then(t, n)
})
}, i._setImmediateFn = function(e) {
f = e
}, i.prototype.always = function(e) {
var t = this.constructor;
return this.then(function(n) {
return t.resolve(e()).then(function() {
return n
})
}, function(n) {
return t.resolve(e()).then(function() {
throw n
})
})
}, "undefined" != typeof e && e.exports ? e.exports = i : n.Promise || (n.Promise = i)
}(this)
}).call(t, n(2).setImmediate)
}, function(e, t, n) {
(function(e, r) {
function i(e, t) {
this._id = e, this._clearFn = t
}
var o = n(3).nextTick,
a = Function.prototype.apply,
s = Array.prototype.slice,
u = {},
l = 0;
t.setTimeout = function() {
return new i(a.call(setTimeout, window, arguments), clearTimeout)
}, t.setInterval = function() {
return new i(a.call(setInterval, window, arguments), clearInterval)
}, t.clearTimeout = t.clearInterval = function(e) {
e.close()
}, i.prototype.unref = i.prototype.ref = function() {}, i.prototype.close = function() {
this._clearFn.call(window, this._id)
}, t.enroll = function(e, t) {
clearTimeout(e._idleTimeoutId), e._idleTimeout = t
}, t.unenroll = function(e) {
clearTimeout(e._idleTimeoutId), e._idleTimeout = -1
}, t._unrefActive = t.active = function(e) {
clearTimeout(e._idleTimeoutId);
var t = e._idleTimeout;
t >= 0 && (e._idleTimeoutId = setTimeout(function() {
e._onTimeout && e._onTimeout()
}, t))
}, t.setImmediate = "function" == typeof e ? e : function(e) {
var n = l++,
r = arguments.length < 2 ? !1 : s.call(arguments, 1);
return u[n] = !0, o(function() {
u[n] && (r ? e.apply(null, r) : e.call(null), t.clearImmediate(n))
}), n
}, t.clearImmediate = "function" == typeof r ? r : function(e) {
delete u[e]
}
}).call(t, n(2).setImmediate, n(2).clearImmediate)
}, function(e, t) {
function n() {
l = !1, a.length ? u = a.concat(u) : c = -1, u.length && r()
} function r() {
if(!l) {
var e = setTimeout(n);
l = !0;
for(var t = u.length; t;) {
for(a = u, u = []; ++c < t;) a && a[c].run();
c = -1, t = u.length
}
a = null, l = !1, clearTimeout(e)
}
} function i(e, t) {
this.fun = e, this.array = t
} function o() {}
var a, s = e.exports = {},
u = [],
l = !1,
c = -1;
s.nextTick = function(e) {
var t = new Array(arguments.length - 1);
if(arguments.length > 1)
for(var n = 1; n < arguments.length; n++) t[n - 1] = arguments[n];
u.push(new i(e, t)), 1 !== u.length || l || setTimeout(r, 0)
}, i.prototype.run = function() {
this.fun.apply(null, this.array)
}, s.title = "browser", s.browser = !0, s.env = {}, s.argv = [], s.version = "", s.versions = {}, s.on = o, s.addListener = o, s.once = o, s.off = o, s.removeListener = o, s.removeAllListeners = o, s.emit = o, s.binding = function(e) {
throw new Error("process.binding is not supported")
}, s.cwd = function() {
return "/"
}, s.chdir = function(e) {
throw new Error("process.chdir is not supported")
}, s.umask = function() {
return 0
}
}, function(e, t) {
function n() {
var e = ~navigator.userAgent.indexOf("Android") && ~navigator.vendor.indexOf("Google") && !~navigator.userAgent.indexOf("Chrome");
return e && navigator.userAgent.match(/AppleWebKit\/(\d+)/).pop() <= 534 || /MQQBrowser/g.test(navigator.userAgent)
}
var r = function() {
try {
return new Blob, !0
} catch(e) {
return !1
}
}() ? window.Blob : function(e, t) {
var n = new(window.BlobBuilder || window.WebKitBlobBuilder || window.MSBlobBuilder || window.MozBlobBuilder);
return e.forEach(function(e) {
n.append(e)
}), n.getBlob(t ? t.type : void 0)
},
i = function() {
function e() {
var e = this,
n = [],
i = Array(21).join("-") + (+new Date * (1e16 * Math.random())).toString(36),
o = XMLHttpRequest.prototype.send;
this.getParts = function() {
return n.toString()
}, this.append = function(e, t, r) {
n.push("--" + i + '\r\nContent-Disposition: form-data; name="' + e + '"'), t instanceof Blob ? (n.push('; filename="' + (r || "blob") + '"\r\nContent-Type: ' + t.type + "\r\n\r\n"), n.push(t)) : n.push("\r\n\r\n" + t), n.push("\r\n")
}, t++, XMLHttpRequest.prototype.send = function(a) {
var s, u, l = this;
a === e ? (n.push("--" + i + "--\r\n"), u = new r(n), s = new FileReader, s.onload = function() {
o.call(l, s.result)
}, s.onerror = function(e) {
throw e
}, s.readAsArrayBuffer(u), this.setRequestHeader("Content-Type", "multipart/form-data; boundary=" + i), t--, 0 == t && (XMLHttpRequest.prototype.send = o)) : o.call(this, a)
}
}
var t = 0;
return e.prototype = Object.create(FormData.prototype), e
}();
e.exports = {
Blob: r,
FormData: n() ? i : FormData
}
}, function(e, t, n) {
var r, i;
(function() {
function n(e) {
return !!e.exifdata
} function o(e, t) {
t = t || e.match(/^data\:([^\;]+)\;base64,/im)[1] || "", e = e.replace(/^data\:([^\;]+)\;base64,/gim, "");
for(var n = atob(e), r = n.length, i = new ArrayBuffer(r), o = new Uint8Array(i), a = 0; r > a; a++) o[a] = n.charCodeAt(a);
return i
} function a(e, t) {
var n = new XMLHttpRequest;
n.open("GET", e, !0), n.responseType = "blob", n.onload = function(e) {
(200 == this.status || 0 === this.status) && t(this.response)
}, n.send()
} function s(e, t) {
function n(n) {
var r = u(n),
i = l(n);
e.exifdata = r || {}, e.iptcdata = i || {}, t && t.call(e)
}
if(e.src)
if(/^data\:/i.test(e.src)) {
var r = o(e.src);
n(r)
} else if(/^blob\:/i.test(e.src)) {
var i = new FileReader;
i.onload = function(e) {
n(e.target.result)
}, a(e.src, function(e) {
i.readAsArrayBuffer(e)
})
} else {
var s = new XMLHttpRequest;
s.onload = function() {
200 == this.status || 0 === this.status ? n(s.response) : t(new Error("Could not load image")), s = null
}, s.open("GET", e.src, !0), s.responseType = "arraybuffer", s.send(null)
} else if(window.FileReader && (e instanceof window.Blob || e instanceof window.File)) {
var i = new FileReader;
i.onload = function(e) {
p && console.log("Got file of length " + e.target.result.byteLength), n(e.target.result)
}, i.readAsArrayBuffer(e)
}
} function u(e) {
var t = new DataView(e);
if(p && console.log("Got file of length " + e.byteLength), 255 != t.getUint8(0) || 216 != t.getUint8(1)) return p && console.log("Not a valid JPEG"), !1;
for(var n, r = 2, i = e.byteLength; i > r;) {
if(255 != t.getUint8(r)) return p && console.log("Not a valid marker at offset " + r + ", found: " + t.getUint8(r)), !1;
if(n = t.getUint8(r + 1), p && console.log(n), 225 == n) return p && console.log("Found 0xFFE1 marker"), g(t, r + 4, t.getUint16(r + 2) - 2);
r += 2 + t.getUint16(r + 2)
}
} function l(e) {
var t = new DataView(e);
if(p && console.log("Got file of length " + e.byteLength), 255 != t.getUint8(0) || 216 != t.getUint8(1)) return p && console.log("Not a valid JPEG"), !1;
for(var n = 2, r = e.byteLength, i = function(e, t) {
return 56 === e.getUint8(t) && 66 === e.getUint8(t + 1) && 73 === e.getUint8(t + 2) && 77 === e.getUint8(t + 3) && 4 === e.getUint8(t + 4) && 4 === e.getUint8(t + 5)
}; r > n;) {
if(i(t, n)) {
var o = t.getUint8(n + 7);
o % 2 !== 0 && (o += 1), 0 === o && (o = 4);
var a = n + 8 + o,
s = t.getUint16(n + 6 + o);
return c(e, a, s)
}
n++
}
} function c(e, t, n) {
for(var r, i, o, a, s, u = new DataView(e), l = {}, c = t; t + n > c;) 28 === u.getUint8(c) && 2 === u.getUint8(c + 1) && (a = u.getUint8(c + 2), a in b && (o = u.getInt16(c + 3), s = o + 5, i = b[a], r = h(u, c + 5, o), l.hasOwnProperty(i) ? l[i] instanceof Array ? l[i].push(r) : l[i] = [l[i], r] : l[i] = r)), c++;
return l
} function f(e, t, n, r, i) {
var o, a, s, u = e.getUint16(n, !i),
l = {};
for(s = 0; u > s; s++) o = n + 12 * s + 2, a = r[e.getUint16(o, !i)], !a && p && console.log("Unknown tag: " + e.getUint16(o, !i)), l[a] = d(e, o, t, n, i);
return l
} function d(e, t, n, r, i) {
var o, a, s, u, l, c, f = e.getUint16(t + 2, !i),
d = e.getUint32(t + 4, !i),
g = e.getUint32(t + 8, !i) + n;
switch(f) {
case 1:
case 7:
if(1 == d) return e.getUint8(t + 8, !i);
for(o = d > 4 ? g : t + 8, a = [], u = 0; d > u; u++) a[u] = e.getUint8(o + u);
return a;
case 2:
return o = d > 4 ? g : t + 8, h(e, o, d - 1);
case 3:
if(1 == d) return e.getUint16(t + 8, !i);
for(o = d > 2 ? g : t + 8, a = [], u = 0; d > u; u++) a[u] = e.getUint16(o + 2 * u, !i);
return a;
case 4:
if(1 == d) return e.getUint32(t + 8, !i);
for(a = [], u = 0; d > u; u++) a[u] = e.getUint32(g + 4 * u, !i);
return a;
case 5:
if(1 == d) return l = e.getUint32(g, !i), c = e.getUint32(g + 4, !i), s = new Number(l / c), s.numerator = l, s.denominator = c, s;
for(a = [], u = 0; d > u; u++) l = e.getUint32(g + 8 * u, !i), c = e.getUint32(g + 4 + 8 * u, !i), a[u] = new Number(l / c), a[u].numerator = l, a[u].denominator = c;
return a;
case 9:
if(1 == d) return e.getInt32(t + 8, !i);
for(a = [], u = 0; d > u; u++) a[u] = e.getInt32(g + 4 * u, !i);
return a;
case 10:
if(1 == d) return e.getInt32(g, !i) / e.getInt32(g + 4, !i);
for(a = [], u = 0; d > u; u++) a[u] = e.getInt32(g + 8 * u, !i) / e.getInt32(g + 4 + 8 * u, !i);
return a
}
} function h(e, t, n) {
var r, i = "";
for(r = t; t + n > r; r++) i += String.fromCharCode(e.getUint8(r));
return i
} function g(e, t) {
if("Exif" != h(e, t, 4)) return p && console.log("Not valid EXIF data! " + h(e, t, 4)), !1;
var n, r, i, o, a, s = t + 6;
if(18761 == e.getUint16(s)) n = !1;
else {
if(19789 != e.getUint16(s)) return p && console.log("Not valid TIFF data! (no 0x4949 or 0x4D4D)"), !1;
n = !0
}
if(42 != e.getUint16(s + 2, !n)) return p && console.log("Not valid TIFF data! (no 0x002A)"), !1;
var u = e.getUint32(s + 4, !n);
if(8 > u) return p && console.log("Not valid TIFF data! (First offset less than 8)", e.getUint32(s + 4, !n)), !1;
if(r = f(e, s, s + u, y, n), r.ExifIFDPointer) {
o = f(e, s, s + r.ExifIFDPointer, w, n);
for(i in o) {
switch(i) {
case "LightSource":
case "Flash":
case "MeteringMode":
case "ExposureProgram":
case "SensingMethod":
case "SceneCaptureType":
case "SceneType":
case "CustomRendered":
case "WhiteBalance":
case "GainControl":
case "Contrast":
case "Saturation":
case "Sharpness":
case "SubjectDistanceRange":
case "FileSource":
o[i] = S[i][o[i]];
break;
case "ExifVersion":
case "FlashpixVersion":
o[i] = String.fromCharCode(o[i][0], o[i][1], o[i][2], o[i][3]);
break;
case "ComponentsConfiguration":
o[i] = S.Components[o[i][0]] + S.Components[o[i][1]] + S.Components[o[i][2]] + S.Components[o[i][3]]
}
r[i] = o[i]
}
}
if(r.GPSInfoIFDPointer) {
a = f(e, s, s + r.GPSInfoIFDPointer, v, n);
for(i in a) {
switch(i) {
case "GPSVersionID":
a[i] = a[i][0] + "." + a[i][1] + "." + a[i][2] + "." + a[i][3]
}
r[i] = a[i]
}
}
return r
}
var p = !1,
m = function(e) {
return e instanceof m ? e : this instanceof m ? void(this.EXIFwrapped = e) : new m(e)
};
"undefined" != typeof e && e.exports && (t = e.exports = m), t.EXIF = m;
var w = m.Tags = {
36864: "ExifVersion",
40960: "FlashpixVersion",
40961: "ColorSpace",
40962: "PixelXDimension",
40963: "PixelYDimension",
37121: "ComponentsConfiguration",
37122: "CompressedBitsPerPixel",
37500: "MakerNote",
37510: "UserComment",
40964: "RelatedSoundFile",
36867: "DateTimeOriginal",
36868: "DateTimeDigitized",
37520: "SubsecTime",
37521: "SubsecTimeOriginal",
37522: "SubsecTimeDigitized",
33434: "ExposureTime",
33437: "FNumber",
34850: "ExposureProgram",
34852: "SpectralSensitivity",
34855: "ISOSpeedRatings",
34856: "OECF",
37377: "ShutterSpeedValue",
37378: "ApertureValue",
37379: "BrightnessValue",
37380: "ExposureBias",
37381: "MaxApertureValue",
37382: "SubjectDistance",
37383: "MeteringMode",
37384: "LightSource",
37385: "Flash",
37396: "SubjectArea",
37386: "FocalLength",
41483: "FlashEnergy",
41484: "SpatialFrequencyResponse",
41486: "FocalPlaneXResolution",
41487: "FocalPlaneYResolution",
41488: "FocalPlaneResolutionUnit",
41492: "SubjectLocation",
41493: "ExposureIndex",
41495: "SensingMethod",
41728: "FileSource",
41729: "SceneType",
41730: "CFAPattern",
41985: "CustomRendered",
41986: "ExposureMode",
41987: "WhiteBalance",
41988: "DigitalZoomRation",
41989: "FocalLengthIn35mmFilm",
41990: "SceneCaptureType",
41991: "GainControl",
41992: "Contrast",
41993: "Saturation",
41994: "Sharpness",
41995: "DeviceSettingDescription",
41996: "SubjectDistanceRange",
40965: "InteroperabilityIFDPointer",
42016: "ImageUniqueID"
},
y = m.TiffTags = {
256: "ImageWidth",
257: "ImageHeight",
34665: "ExifIFDPointer",
34853: "GPSInfoIFDPointer",
40965: "InteroperabilityIFDPointer",
258: "BitsPerSample",
259: "Compression",
262: "PhotometricInterpretation",
274: "Orientation",
277: "SamplesPerPixel",
284: "PlanarConfiguration",
530: "YCbCrSubSampling",
531: "YCbCrPositioning",
282: "XResolution",
283: "YResolution",
296: "ResolutionUnit",
273: "StripOffsets",
278: "RowsPerStrip",
279: "StripByteCounts",
513: "JPEGInterchangeFormat",
514: "JPEGInterchangeFormatLength",
301: "TransferFunction",
318: "WhitePoint",
319: "PrimaryChromaticities",
529: "YCbCrCoefficients",
532: "ReferenceBlackWhite",
306: "DateTime",
270: "ImageDescription",
271: "Make",
272: "Model",
305: "Software",
315: "Artist",
33432: "Copyright"
},
v = m.GPSTags = {
0: "GPSVersionID",
1: "GPSLatitudeRef",
2: "GPSLatitude",
3: "GPSLongitudeRef",
4: "GPSLongitude",
5: "GPSAltitudeRef",
6: "GPSAltitude",
7: "GPSTimeStamp",
8: "GPSSatellites",
9: "GPSStatus",
10: "GPSMeasureMode",
11: "GPSDOP",
12: "GPSSpeedRef",
13: "GPSSpeed",
14: "GPSTrackRef",
15: "GPSTrack",
16: "GPSImgDirectionRef",
17: "GPSImgDirection",
18: "GPSMapDatum",
19: "GPSDestLatitudeRef",
20: "GPSDestLatitude",
21: "GPSDestLongitudeRef",
22: "GPSDestLongitude",
23: "GPSDestBearingRef",
24: "GPSDestBearing",
25: "GPSDestDistanceRef",
26: "GPSDestDistance",
27: "GPSProcessingMethod",
28: "GPSAreaInformation",
29: "GPSDateStamp",
30: "GPSDifferential"
},
S = m.StringValues = {
ExposureProgram: {
0: "Not defined",
1: "Manual",
2: "Normal program",
3: "Aperture priority",
4: "Shutter priority",
5: "Creative program",
6: "Action program",
7: "Portrait mode",
8: "Landscape mode"
},
MeteringMode: {
0: "Unknown",
1: "Average",
2: "CenterWeightedAverage",
3: "Spot",
4: "MultiSpot",
5: "Pattern",
6: "Partial",
255: "Other"
},
LightSource: {
0: "Unknown",
1: "Daylight",
2: "Fluorescent",
3: "Tungsten (incandescent light)",
4: "Flash",
9: "Fine weather",
10: "Cloudy weather",
11: "Shade",
12: "Daylight fluorescent (D 5700 - 7100K)",
13: "Day white fluorescent (N 4600 - 5400K)",
14: "Cool white fluorescent (W 3900 - 4500K)",
15: "White fluorescent (WW 3200 - 3700K)",
17: "Standard light A",
18: "Standard light B",
19: "Standard light C",
20: "D55",
21: "D65",
22: "D75",
23: "D50",
24: "ISO studio tungsten",
255: "Other"
},
Flash: {
0: "Flash did not fire",
1: "Flash fired",
5: "Strobe return light not detected",
7: "Strobe return light detected",
9: "Flash fired, compulsory flash mode",
13: "Flash fired, compulsory flash mode, return light not detected",
15: "Flash fired, compulsory flash mode, return light detected",
16: "Flash did not fire, compulsory flash mode",
24: "Flash did not fire, auto mode",
25: "Flash fired, auto mode",
29: "Flash fired, auto mode, return light not detected",
31: "Flash fired, auto mode, return light detected",
32: "No flash function",
65: "Flash fired, red-eye reduction mode",
69: "Flash fired, red-eye reduction mode, return light not detected",
71: "Flash fired, red-eye reduction mode, return light detected",
73: "Flash fired, compulsory flash mode, red-eye reduction mode",
77: "Flash fired, compulsory flash mode, red-eye reduction mode, return light not detected",
79: "Flash fired, compulsory flash mode, red-eye reduction mode, return light detected",
89: "Flash fired, auto mode, red-eye reduction mode",
93: "Flash fired, auto mode, return light not detected, red-eye reduction mode",
95: "Flash fired, auto mode, return light detected, red-eye reduction mode"
},
SensingMethod: {
1: "Not defined",
2: "One-chip color area sensor",
3: "Two-chip color area sensor",
4: "Three-chip color area sensor",
5: "Color sequential area sensor",
7: "Trilinear sensor",
8: "Color sequential linear sensor"
},
SceneCaptureType: {
0: "Standard",
1: "Landscape",
2: "Portrait",
3: "Night scene"
},
SceneType: {
1: "Directly photographed"
},
CustomRendered: {
0: "Normal process",
1: "Custom process"
},
WhiteBalance: {
0: "Auto white balance",
1: "Manual white balance"
},
GainControl: {
0: "None",
1: "Low gain up",
2: "High gain up",
3: "Low gain down",
4: "High gain down"
},
Contrast: {
0: "Normal",
1: "Soft",
2: "Hard"
},
Saturation: {
0: "Normal",
1: "Low saturation",
2: "High saturation"
},
Sharpness: {
0: "Normal",
1: "Soft",
2: "Hard"
},
SubjectDistanceRange: {
0: "Unknown",
1: "Macro",
2: "Close view",
3: "Distant view"
},
FileSource: {
3: "DSC"
},
Components: {
0: "",
1: "Y",
2: "Cb",
3: "Cr",
4: "R",
5: "G",
6: "B"
}
},
b = {
120: "caption",
110: "credit",
25: "keywords",
55: "dateCreated",
80: "byline",
85: "bylineTitle",
122: "captionWriter",
105: "headline",
116: "copyright",
15: "category"
};
m.getData = function(e, t) {
return(e instanceof Image || e instanceof HTMLImageElement) && !e.complete ? !1 : (n(e) ? t && t.call(e) : s(e, t), !0)
}, m.getTag = function(e, t) {
return n(e) ? e.exifdata[t] : void 0
}, m.getAllTags = function(e) {
if(!n(e)) return {};
var t, r = e.exifdata,
i = {};
for(t in r) r.hasOwnProperty(t) && (i[t] = r[t]);
return i
}, m.pretty = function(e) {
if(!n(e)) return "";
var t, r = e.exifdata,
i = "";
for(t in r) r.hasOwnProperty(t) && (i += "object" == typeof r[t] ? r[t] instanceof Number ? t + " : " + r[t] + " [" + r[t].numerator + "/" + r[t].denominator + "]\r\n" : t + " : [" + r[t].length + " values]\r\n" : t + " : " + r[t] + "\r\n");
return i
}, m.readFromBinaryFile = function(e) {
return u(e)
}, r = [], i = function() {
return m
}.apply(t, r), !(void 0 !== i && (e.exports = i))
}).call(this)
}])
});
//# sourceMappingURL=lrz.bundle.js.map
上一篇:【转】CSS z-index 属性的使用方法和层级树的概念


下一篇:高级软件工程2017第7次作业--C++团队项目:Beta阶段综合报告