@jysd/lrz
Version:
前端本地客户端压缩图片，兼容IOS，Android，PC、自动按需加载文件
539 lines (515 loc) • 17.2 kB
JavaScript
webpackJsonp([2],{
/***/ 9:
/***/ (function(module, exports) {
function JPEGEncoder (l) {
var o = this;
var s = Math.round;
var k = Math.floor;
var O = new Array(64);
var K = new Array(64);
var d = new Array(64);
var Z = new Array(64);
var u;
var h;
var G;
var T;
var n = new Array(65535);
var m = new Array(65535);
var P = new Array(64);
var S = new Array(64);
var j = [];
var t = 0;
var a = 7;
var A = new Array(64);
var f = new Array(64);
var U = new Array(64);
var e = new Array(256);
var C = new Array(2048);
var x;
var i = [0, 1, 5, 6, 14, 15, 27, 28, 2, 4, 7, 13, 16, 26, 29, 42, 3, 8, 12, 17, 25, 30, 41, 43, 9, 11, 18, 24, 31, 40, 44, 53, 10, 19, 23, 32, 39, 45, 52, 54, 20, 22, 33, 38, 46, 51, 55, 60, 21, 34, 37, 47, 50, 56, 59, 61, 35, 36, 48, 49, 57, 58, 62, 63];
var g = [0, 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0];
var c = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
var w = [0, 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 125];
var E = [1, 2, 3, 0, 4, 17, 5, 18, 33, 49, 65, 6, 19, 81, 97, 7, 34, 113, 20, 50, 129, 145, 161, 8, 35, 66, 177, 193, 21, 82, 209, 240, 36, 51, 98, 114, 130, 9, 10, 22, 23, 24, 25, 26, 37, 38, 39, 40, 41, 42, 52, 53, 54, 55, 56, 57, 58, 67, 68, 69, 70, 71, 72, 73, 74, 83, 84, 85, 86, 87, 88, 89, 90, 99, 100, 101, 102, 103, 104, 105, 106, 115, 116, 117, 118, 119, 120, 121, 122, 131, 132, 133, 134, 135, 136, 137, 138, 146, 147, 148, 149, 150, 151, 152, 153, 154, 162, 163, 164, 165, 166, 167, 168, 169, 170, 178, 179, 180, 181, 182, 183, 184, 185, 186, 194, 195, 196, 197, 198, 199, 200, 201, 202, 210, 211, 212, 213, 214, 215, 216, 217, 218, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250];
var v = [0, 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0];
var Y = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11];
var J = [0, 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 119];
var B = [0, 1, 2, 3, 17, 4, 5, 33, 49, 6, 18, 65, 81, 7, 97, 113, 19, 34, 50, 129, 8, 20, 66, 145, 161, 177, 193, 9, 35, 51, 82, 240, 21, 98, 114, 209, 10, 22, 36, 52, 225, 37, 241, 23, 24, 25, 26, 38, 39, 40, 41, 42, 53, 54, 55, 56, 57, 58, 67, 68, 69, 70, 71, 72, 73, 74, 83, 84, 85, 86, 87, 88, 89, 90, 99, 100, 101, 102, 103, 104, 105, 106, 115, 116, 117, 118, 119, 120, 121, 122, 130, 131, 132, 133, 134, 135, 136, 137, 138, 146, 147, 148, 149, 150, 151, 152, 153, 154, 162, 163, 164, 165, 166, 167, 168, 169, 170, 178, 179, 180, 181, 182, 183, 184, 185, 186, 194, 195, 196, 197, 198, 199, 200, 201, 202, 210, 211, 212, 213, 214, 215, 216, 217, 218, 226, 227, 228, 229, 230, 231, 232, 233, 234, 242, 243, 244, 245, 246, 247, 248, 249, 250];
function M (ag) {
var af = [16, 11, 10, 16, 24, 40, 51, 61, 12, 12, 14, 19, 26, 58, 60, 55, 14, 13, 16, 24, 40, 57, 69, 56, 14, 17, 22, 29, 51, 87, 80, 62, 18, 22, 37, 56, 68, 109, 103, 77, 24, 35, 55, 64, 81, 104, 113, 92, 49, 64, 78, 87, 103, 121, 120, 101, 72, 92, 95, 98, 112, 100, 103, 99];
for (var ae = 0; ae < 64; ae++) {
var aj = k((af[ae] * ag + 50) / 100);
if (aj < 1) {
aj = 1
} else {
if (aj > 255) {
aj = 255
}
}
O[i[ae]] = aj
}
var ah = [17, 18, 24, 47, 99, 99, 99, 99, 18, 21, 26, 66, 99, 99, 99, 99, 24, 26, 56, 99, 99, 99, 99, 99, 47, 66, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99, 99];
for (var ad = 0; ad < 64; ad++) {
var ai = k((ah[ad] * ag + 50) / 100);
if (ai < 1) {
ai = 1
} else {
if (ai > 255) {
ai = 255
}
}
K[i[ad]] = ai
}
var ac = [1, 1.387039845, 1.306562965, 1.175875602, 1, 0.785694958, 0.5411961, 0.275899379];
var ab = 0;
for (var ak = 0; ak < 8; ak++) {
for (var aa = 0; aa < 8; aa++) {
d[ab] = (1 / (O[i[ab]] * ac[ak] * ac[aa] * 8));
Z[ab] = (1 / (K[i[ab]] * ac[ak] * ac[aa] * 8));
ab++
}
}
}
function q (ae, aa) {
var ad = 0;
var ag = 0;
var af = new Array();
for (var ab = 1; ab <= 16; ab++) {
for (var ac = 1; ac <= ae[ab]; ac++) {
af[aa[ag]] = [];
af[aa[ag]][0] = ad;
af[aa[ag]][1] = ab;
ag++;
ad++
}
ad *= 2
}
return af
}
function W () {
u = q(g, c);
h = q(v, Y);
G = q(w, E);
T = q(J, B)
}
function z () {
var ac = 1;
var ab = 2;
for (var aa = 1; aa <= 15; aa++) {
for (var ad = ac; ad < ab; ad++) {
m[32767 + ad] = aa;
n[32767 + ad] = [];
n[32767 + ad][1] = aa;
n[32767 + ad][0] = ad
}
for (var ae = -(ab - 1); ae <= -ac; ae++) {
m[32767 + ae] = aa;
n[32767 + ae] = [];
n[32767 + ae][1] = aa;
n[32767 + ae][0] = ab - 1 + ae
}
ac <<= 1;
ab <<= 1
}
}
function V () {
for (var aa = 0; aa < 256; aa++) {
C[aa] = 19595 * aa;
C[(aa + 256) >> 0] = 38470 * aa;
C[(aa + 512) >> 0] = 7471 * aa + 32768;
C[(aa + 768) >> 0] = -11059 * aa;
C[(aa + 1024) >> 0] = -21709 * aa;
C[(aa + 1280) >> 0] = 32768 * aa + 8421375;
C[(aa + 1536) >> 0] = -27439 * aa;
C[(aa + 1792) >> 0] = -5329 * aa
}
}
function X (aa) {
var ac = aa[0];
var ab = aa[1] - 1;
while (ab >= 0) {
if (ac & (1 << ab)) {
t |= (1 << a)
}
ab--;
a--;
if (a < 0) {
if (t == 255) {
F(255);
F(0)
} else {
F(t)
}
a = 7;
t = 0
}
}
}
function F (aa) {
j.push(e[aa])
}
function p (aa) {
F((aa >> 8) & 255);
F((aa) & 255)
}
function N (aZ, ap) {
var aL, aK, aJ, aI, aH, aD, aC, aB;
var aN = 0;
var aR;
const aq = 8;
const ai = 64;
for (aR = 0; aR < aq; ++aR) {
aL = aZ[aN];
aK = aZ[aN + 1];
aJ = aZ[aN + 2];
aI = aZ[aN + 3];
aH = aZ[aN + 4];
aD = aZ[aN + 5];
aC = aZ[aN + 6];
aB = aZ[aN + 7];
var aY = aL + aB;
var aO = aL - aB;
var aX = aK + aC;
var aP = aK - aC;
var aU = aJ + aD;
var aQ = aJ - aD;
var aT = aI + aH;
var aS = aI - aH;
var an = aY + aT;
var ak = aY - aT;
var am = aX + aU;
var al = aX - aU;
aZ[aN] = an + am;
aZ[aN + 4] = an - am;
var ax = (al + ak) * 0.707106781;
aZ[aN + 2] = ak + ax;
aZ[aN + 6] = ak - ax;
an = aS + aQ;
am = aQ + aP;
al = aP + aO;
var at = (an - al) * 0.382683433;
var aw = 0.5411961 * an + at;
var au = 1.306562965 * al + at;
var av = am * 0.707106781;
var ah = aO + av;
var ag = aO - av;
aZ[aN + 5] = ag + aw;
aZ[aN + 3] = ag - aw;
aZ[aN + 1] = ah + au;
aZ[aN + 7] = ah - au;
aN += 8
}
aN = 0;
for (aR = 0; aR < aq; ++aR) {
aL = aZ[aN];
aK = aZ[aN + 8];
aJ = aZ[aN + 16];
aI = aZ[aN + 24];
aH = aZ[aN + 32];
aD = aZ[aN + 40];
aC = aZ[aN + 48];
aB = aZ[aN + 56];
var ar = aL + aB;
var aj = aL - aB;
var az = aK + aC;
var ae = aK - aC;
var aG = aJ + aD;
var ac = aJ - aD;
var aW = aI + aH;
var aa = aI - aH;
var ao = ar + aW;
var aV = ar - aW;
var ay = az + aG;
var aF = az - aG;
aZ[aN] = ao + ay;
aZ[aN + 32] = ao - ay;
var af = (aF + aV) * 0.707106781;
aZ[aN + 16] = aV + af;
aZ[aN + 48] = aV - af;
ao = aa + ac;
ay = ac + ae;
aF = ae + aj;
var aM = (ao - aF) * 0.382683433;
var ad = 0.5411961 * ao + aM;
var a1 = 1.306562965 * aF + aM;
var ab = ay * 0.707106781;
var a0 = aj + ab;
var aA = aj - ab;
aZ[aN + 40] = aA + ad;
aZ[aN + 24] = aA - ad;
aZ[aN + 8] = a0 + a1;
aZ[aN + 56] = a0 - a1;
aN++
}
var aE;
for (aR = 0; aR < ai; ++aR) {
aE = aZ[aR] * ap[aR];
P[aR] = (aE > 0) ? ((aE + 0.5) | 0) : ((aE - 0.5) | 0)
}
return P
}
function b () {
p(65504);
p(16);
F(74);
F(70);
F(73);
F(70);
F(0);
F(1);
F(1);
F(0);
p(1);
p(1);
F(0);
F(0)
}
function r (aa, ab) {
p(65472);
p(17);
F(8);
p(ab);
p(aa);
F(3);
F(1);
F(17);
F(0);
F(2);
F(17);
F(1);
F(3);
F(17);
F(1)
}
function D () {
p(65499);
p(132);
F(0);
for (var ab = 0; ab < 64; ab++) {
F(O[ab])
}
F(1);
for (var aa = 0; aa < 64; aa++) {
F(K[aa])
}
}
function H () {
p(65476);
p(418);
F(0);
for (var ae = 0; ae < 16; ae++) {
F(g[ae + 1])
}
for (var ad = 0; ad <= 11; ad++) {
F(c[ad])
}
F(16);
for (var ac = 0; ac < 16; ac++) {
F(w[ac + 1])
}
for (var ab = 0; ab <= 161; ab++) {
F(E[ab])
}
F(1);
for (var aa = 0; aa < 16; aa++) {
F(v[aa + 1])
}
for (var ah = 0; ah <= 11; ah++) {
F(Y[ah])
}
F(17);
for (var ag = 0; ag < 16; ag++) {
F(J[ag + 1])
}
for (var af = 0; af <= 161; af++) {
F(B[af])
}
}
function I () {
p(65498);
p(12);
F(3);
F(1);
F(0);
F(2);
F(17);
F(3);
F(17);
F(0);
F(63);
F(0)
}
function L (ad, aa, al, at, ap) {
var ag = ap[0];
var ab = ap[240];
var ac;
const ar = 16;
const ai = 63;
const ah = 64;
var aq = N(ad, aa);
for (var am = 0; am < ah; ++am) {
S[i[am]] = aq[am]
}
var an = S[0] - al;
al = S[0];
if (an == 0) {
X(at[0])
} else {
ac = 32767 + an;
X(at[m[ac]]);
X(n[ac])
}
var ae = 63;
for (; (ae > 0) && (S[ae] == 0); ae--) {
}
if (ae == 0) {
X(ag);
return al
}
var ao = 1;
var au;
while (ao <= ae) {
var ak = ao;
for (; (S[ao] == 0) && (ao <= ae); ++ao) {
}
var aj = ao - ak;
if (aj >= ar) {
au = aj >> 4;
for (var af = 1; af <= au; ++af) {
X(ab)
}
aj = aj & 15
}
ac = 32767 + S[ao];
X(ap[(aj << 4) + m[ac]]);
X(n[ac]);
ao++
}
if (ae != ai) {
X(ag)
}
return al
}
function y () {
var ab = String.fromCharCode;
for (var aa = 0; aa < 256; aa++) {
e[aa] = ab(aa)
}
}
this.encode = function (an, aj, aB) {
var aa = new Date().getTime();
if (aj) {
R(aj)
}
j = new Array();
t = 0;
a = 7;
p(65496);
b();
D();
r(an.width, an.height);
H();
I();
var al = 0;
var aq = 0;
var ao = 0;
t = 0;
a = 7;
this.encode.displayName = "_encode_";
var at = an.data;
var ar = an.width;
var aA = an.height;
var ay = ar * 4;
var ai = ar * 3;
var ah, ag = 0;
var am, ax, az;
var ab, ap, ac, af, ae;
while (ag < aA) {
ah = 0;
while (ah < ay) {
ab = ay * ag + ah;
ap = ab;
ac = -1;
af = 0;
for (ae = 0; ae < 64; ae++) {
af = ae >> 3;
ac = (ae & 7) * 4;
ap = ab + (af * ay) + ac;
if (ag + af >= aA) {
ap -= (ay * (ag + 1 + af - aA))
}
if (ah + ac >= ay) {
ap -= ((ah + ac) - ay + 4)
}
am = at[ap++];
ax = at[ap++];
az = at[ap++];
A[ae] = ((C[am] + C[(ax + 256) >> 0] + C[(az + 512) >> 0]) >> 16) - 128;
f[ae] = ((C[(am + 768) >> 0] + C[(ax + 1024) >> 0] + C[(az + 1280) >> 0]) >> 16) - 128;
U[ae] = ((C[(am + 1280) >> 0] + C[(ax + 1536) >> 0] + C[(az + 1792) >> 0]) >> 16) - 128
}
al = L(A, d, al, u, G);
aq = L(f, Z, aq, h, T);
ao = L(U, Z, ao, h, T);
ah += 32
}
ag += 8
}
if (a >= 0) {
var aw = [];
aw[1] = a + 1;
aw[0] = (1 << (a + 1)) - 1;
X(aw)
}
p(65497);
if (aB) {
var av = j.length;
var aC = new Uint8Array(av);
for (var au = 0; au < av; au++) {
aC[au] = j[au].charCodeAt()
}
j = [];
var ak = new Date().getTime() - aa;
return aC
}
var ad = "data:image/jpeg;base64," + btoa(j.join(""));
j = [];
var ak = new Date().getTime() - aa;
return ad
};
function R (ab) {
if (ab <= 0) {
ab = 1
}
if (ab > 100) {
ab = 100
}
if (x == ab) {
return
}
var aa = 0;
if (ab < 50) {
aa = Math.floor(5000 / ab)
} else {
aa = Math.floor(200 - ab * 2)
}
M(aa);
x = ab;
}
function Q () {
var aa = new Date().getTime();
if (!l) {
l = 50
}
y();
W();
z();
V();
R(l);
var ab = new Date().getTime() - aa;
}
Q()
}
module.exports = JPEGEncoder;
/***/ })
});