Sindbad~EG File Manager
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _pako = _interopRequireDefault(require("pako"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var UPNG = {};
UPNG.toRGBA8 = function (out) {
var w = out.width,
h = out.height;
if (out.tabs.acTL == null) return [UPNG.toRGBA8.decodeImage(out.data, w, h, out).buffer];
var frms = [];
if (out.frames[0].data == null) out.frames[0].data = out.data;
var len = w * h * 4,
img = new Uint8Array(len),
empty = new Uint8Array(len),
prev = new Uint8Array(len);
for (var i = 0; i < out.frames.length; i++) {
var frm = out.frames[i];
var fx = frm.rect.x,
fy = frm.rect.y,
fw = frm.rect.width,
fh = frm.rect.height;
var fdata = UPNG.toRGBA8.decodeImage(frm.data, fw, fh, out);
if (i != 0) for (var j = 0; j < len; j++) prev[j] = img[j];
if (frm.blend == 0) UPNG._copyTile(fdata, fw, fh, img, w, h, fx, fy, 0);else if (frm.blend == 1) UPNG._copyTile(fdata, fw, fh, img, w, h, fx, fy, 1);
frms.push(img.buffer.slice(0));
if (frm.dispose == 0) {} else if (frm.dispose == 1) UPNG._copyTile(empty, fw, fh, img, w, h, fx, fy, 0);else if (frm.dispose == 2) for (var j = 0; j < len; j++) img[j] = prev[j];
}
return frms;
};
UPNG.toRGBA8.decodeImage = function (data, w, h, out) {
var area = w * h,
bpp = UPNG.decode._getBPP(out);
var bpl = Math.ceil(w * bpp / 8); // bytes per line
var bf = new Uint8Array(area * 4),
bf32 = new Uint32Array(bf.buffer);
var ctype = out.ctype,
depth = out.depth;
var rs = UPNG._bin.readUshort; //console.log(ctype, depth);
var time = Date.now();
if (ctype == 6) {
// RGB + alpha
var qarea = area << 2;
if (depth == 8) for (var i = 0; i < qarea; i += 4) {
bf[i] = data[i];
bf[i + 1] = data[i + 1];
bf[i + 2] = data[i + 2];
bf[i + 3] = data[i + 3];
}
if (depth == 16) for (var i = 0; i < qarea; i++) {
bf[i] = data[i << 1];
}
} else if (ctype == 2) {
// RGB
var ts = out.tabs["tRNS"];
if (ts == null) {
if (depth == 8) for (var i = 0; i < area; i++) {
var ti = i * 3;
bf32[i] = 255 << 24 | data[ti + 2] << 16 | data[ti + 1] << 8 | data[ti];
}
if (depth == 16) for (var i = 0; i < area; i++) {
var ti = i * 6;
bf32[i] = 255 << 24 | data[ti + 4] << 16 | data[ti + 2] << 8 | data[ti];
}
} else {
var tr = ts[0],
tg = ts[1],
tb = ts[2];
if (depth == 8) for (var i = 0; i < area; i++) {
var qi = i << 2,
ti = i * 3;
bf32[i] = 255 << 24 | data[ti + 2] << 16 | data[ti + 1] << 8 | data[ti];
if (data[ti] == tr && data[ti + 1] == tg && data[ti + 2] == tb) bf[qi + 3] = 0;
}
if (depth == 16) for (var i = 0; i < area; i++) {
var qi = i << 2,
ti = i * 6;
bf32[i] = 255 << 24 | data[ti + 4] << 16 | data[ti + 2] << 8 | data[ti];
if (rs(data, ti) == tr && rs(data, ti + 2) == tg && rs(data, ti + 4) == tb) bf[qi + 3] = 0;
}
}
} else if (ctype == 3) {
// palette
var p = out.tabs["PLTE"],
ap = out.tabs["tRNS"],
tl = ap ? ap.length : 0; //console.log(p, ap);
if (depth == 1) for (var y = 0; y < h; y++) {
var s0 = y * bpl,
t0 = y * w;
for (var i = 0; i < w; i++) {
var qi = t0 + i << 2,
j = data[s0 + (i >> 3)] >> 7 - ((i & 7) << 0) & 1,
cj = 3 * j;
bf[qi] = p[cj];
bf[qi + 1] = p[cj + 1];
bf[qi + 2] = p[cj + 2];
bf[qi + 3] = j < tl ? ap[j] : 255;
}
}
if (depth == 2) for (var y = 0; y < h; y++) {
var s0 = y * bpl,
t0 = y * w;
for (var i = 0; i < w; i++) {
var qi = t0 + i << 2,
j = data[s0 + (i >> 2)] >> 6 - ((i & 3) << 1) & 3,
cj = 3 * j;
bf[qi] = p[cj];
bf[qi + 1] = p[cj + 1];
bf[qi + 2] = p[cj + 2];
bf[qi + 3] = j < tl ? ap[j] : 255;
}
}
if (depth == 4) for (var y = 0; y < h; y++) {
var s0 = y * bpl,
t0 = y * w;
for (var i = 0; i < w; i++) {
var qi = t0 + i << 2,
j = data[s0 + (i >> 1)] >> 4 - ((i & 1) << 2) & 15,
cj = 3 * j;
bf[qi] = p[cj];
bf[qi + 1] = p[cj + 1];
bf[qi + 2] = p[cj + 2];
bf[qi + 3] = j < tl ? ap[j] : 255;
}
}
if (depth == 8) for (var i = 0; i < area; i++) {
var qi = i << 2,
j = data[i],
cj = 3 * j;
bf[qi] = p[cj];
bf[qi + 1] = p[cj + 1];
bf[qi + 2] = p[cj + 2];
bf[qi + 3] = j < tl ? ap[j] : 255;
}
} else if (ctype == 4) {
// gray + alpha
if (depth == 8) for (var i = 0; i < area; i++) {
var qi = i << 2,
di = i << 1,
gr = data[di];
bf[qi] = gr;
bf[qi + 1] = gr;
bf[qi + 2] = gr;
bf[qi + 3] = data[di + 1];
}
if (depth == 16) for (var i = 0; i < area; i++) {
var qi = i << 2,
di = i << 2,
gr = data[di];
bf[qi] = gr;
bf[qi + 1] = gr;
bf[qi + 2] = gr;
bf[qi + 3] = data[di + 2];
}
} else if (ctype == 0) {
// gray
var tr = out.tabs["tRNS"] ? out.tabs["tRNS"] : -1;
for (var y = 0; y < h; y++) {
var off = y * bpl,
to = y * w;
if (depth == 1) for (var x = 0; x < w; x++) {
var gr = 255 * (data[off + (x >>> 3)] >>> 7 - (x & 7) & 1),
al = gr == tr * 255 ? 0 : 255;
bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
} else if (depth == 2) for (var x = 0; x < w; x++) {
var gr = 85 * (data[off + (x >>> 2)] >>> 6 - ((x & 3) << 1) & 3),
al = gr == tr * 85 ? 0 : 255;
bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
} else if (depth == 4) for (var x = 0; x < w; x++) {
var gr = 17 * (data[off + (x >>> 1)] >>> 4 - ((x & 1) << 2) & 15),
al = gr == tr * 17 ? 0 : 255;
bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
} else if (depth == 8) for (var x = 0; x < w; x++) {
var gr = data[off + x],
al = gr == tr ? 0 : 255;
bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
} else if (depth == 16) for (var x = 0; x < w; x++) {
var gr = data[off + (x << 1)],
al = rs(data, off + (x << i)) == tr ? 0 : 255;
bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
}
}
} //console.log(Date.now()-time);
return bf;
};
UPNG.decode = function (buff) {
var data = new Uint8Array(buff),
offset = 8,
bin = UPNG._bin,
rUs = bin.readUshort,
rUi = bin.readUint;
var out = {
tabs: {},
frames: []
};
var dd = new Uint8Array(data.length),
doff = 0; // put all IDAT data into it
var fd,
foff = 0; // frames
var mgck = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
for (var i = 0; i < 8; i++) if (data[i] != mgck[i]) throw "The input is not a PNG file!";
while (offset < data.length) {
var len = bin.readUint(data, offset);
offset += 4;
var type = bin.readASCII(data, offset, 4);
offset += 4; //console.log(type,len);
if (type == "IHDR") {
UPNG.decode._IHDR(data, offset, out);
} else if (type == "IDAT") {
for (var i = 0; i < len; i++) dd[doff + i] = data[offset + i];
doff += len;
} else if (type == "acTL") {
out.tabs[type] = {
num_frames: rUi(data, offset),
num_plays: rUi(data, offset + 4)
};
fd = new Uint8Array(data.length);
} else if (type == "fcTL") {
if (foff != 0) {
var fr = out.frames[out.frames.length - 1];
fr.data = UPNG.decode._decompress(out, fd.slice(0, foff), fr.rect.width, fr.rect.height);
foff = 0;
}
var rct = {
x: rUi(data, offset + 12),
y: rUi(data, offset + 16),
width: rUi(data, offset + 4),
height: rUi(data, offset + 8)
};
var del = rUs(data, offset + 22);
del = rUs(data, offset + 20) / (del == 0 ? 100 : del);
var frm = {
rect: rct,
delay: Math.round(del * 1000),
dispose: data[offset + 24],
blend: data[offset + 25]
}; //console.log(frm);
out.frames.push(frm);
} else if (type == "fdAT") {
for (var i = 0; i < len - 4; i++) fd[foff + i] = data[offset + i + 4];
foff += len - 4;
} else if (type == "pHYs") {
out.tabs[type] = [bin.readUint(data, offset), bin.readUint(data, offset + 4), data[offset + 8]];
} else if (type == "cHRM") {
out.tabs[type] = [];
for (var i = 0; i < 8; i++) out.tabs[type].push(bin.readUint(data, offset + i * 4));
} else if (type == "tEXt") {
if (out.tabs[type] == null) out.tabs[type] = {};
var nz = bin.nextZero(data, offset);
var keyw = bin.readASCII(data, offset, nz - offset);
var text = bin.readASCII(data, nz + 1, offset + len - nz - 1);
out.tabs[type][keyw] = text;
} else if (type == "iTXt") {
if (out.tabs[type] == null) out.tabs[type] = {};
var nz = 0,
off = offset;
nz = bin.nextZero(data, off);
var keyw = bin.readASCII(data, off, nz - off);
off = nz + 1;
var cflag = data[off],
cmeth = data[off + 1];
off += 2;
nz = bin.nextZero(data, off);
var ltag = bin.readASCII(data, off, nz - off);
off = nz + 1;
nz = bin.nextZero(data, off);
var tkeyw = bin.readUTF8(data, off, nz - off);
off = nz + 1;
var text = bin.readUTF8(data, off, len - (off - offset));
out.tabs[type][keyw] = text;
} else if (type == "PLTE") {
out.tabs[type] = bin.readBytes(data, offset, len);
} else if (type == "hIST") {
var pl = out.tabs["PLTE"].length / 3;
out.tabs[type] = [];
for (var i = 0; i < pl; i++) out.tabs[type].push(rUs(data, offset + i * 2));
} else if (type == "tRNS") {
if (out.ctype == 3) out.tabs[type] = bin.readBytes(data, offset, len);else if (out.ctype == 0) out.tabs[type] = rUs(data, offset);else if (out.ctype == 2) out.tabs[type] = [rUs(data, offset), rUs(data, offset + 2), rUs(data, offset + 4)]; //else console.log("tRNS for unsupported color type",out.ctype, len);
} else if (type == "gAMA") out.tabs[type] = bin.readUint(data, offset) / 100000;else if (type == "sRGB") out.tabs[type] = data[offset];else if (type == "bKGD") {
if (out.ctype == 0 || out.ctype == 4) out.tabs[type] = [rUs(data, offset)];else if (out.ctype == 2 || out.ctype == 6) out.tabs[type] = [rUs(data, offset), rUs(data, offset + 2), rUs(data, offset + 4)];else if (out.ctype == 3) out.tabs[type] = data[offset];
} else if (type == "IEND") {
break;
} //else { log("unknown chunk type", type, len); }
offset += len;
var crc = bin.readUint(data, offset);
offset += 4;
}
if (foff != 0) {
var fr = out.frames[out.frames.length - 1];
fr.data = UPNG.decode._decompress(out, fd.slice(0, foff), fr.rect.width, fr.rect.height);
foff = 0;
}
out.data = UPNG.decode._decompress(out, dd, out.width, out.height);
delete out.compress;
delete out.interlace;
delete out.filter;
return out;
};
UPNG.decode._decompress = function (out, dd, w, h) {
var time = Date.now();
var bpp = UPNG.decode._getBPP(out),
bpl = Math.ceil(w * bpp / 8),
buff = new Uint8Array((bpl + 1 + out.interlace) * h);
dd = UPNG.decode._inflate(dd, buff); //console.log(dd.length, buff.length);
//console.log(Date.now()-time);
var time = Date.now();
if (out.interlace == 0) dd = UPNG.decode._filterZero(dd, out, 0, w, h);else if (out.interlace == 1) dd = UPNG.decode._readInterlace(dd, out); //console.log(Date.now()-time);
return dd;
};
UPNG.decode._inflate = function (data, buff) {
var out = UPNG["inflateRaw"](new Uint8Array(data.buffer, 2, data.length - 6), buff);
return out;
};
UPNG.inflateRaw = function () {
var H = {};
H.H = {};
H.H.N = function (N, W) {
var R = Uint8Array,
i = 0,
m = 0,
J = 0,
h = 0,
Q = 0,
X = 0,
u = 0,
w = 0,
d = 0,
v,
C;
if (N[0] == 3 && N[1] == 0) return W ? W : new R(0);
var V = H.H,
n = V.b,
A = V.e,
l = V.R,
M = V.n,
I = V.A,
e = V.Z,
b = V.m,
Z = W == null;
if (Z) W = new R(N.length >>> 2 << 3);
while (i == 0) {
i = n(N, d, 1);
m = n(N, d + 1, 2);
d += 3;
if (m == 0) {
if ((d & 7) != 0) d += 8 - (d & 7);
var D = (d >>> 3) + 4,
q = N[D - 4] | N[D - 3] << 8;
if (Z) W = H.H.W(W, w + q);
W.set(new R(N.buffer, N.byteOffset + D, q), w);
d = D + q << 3;
w += q;
continue;
}
if (Z) W = H.H.W(W, w + (1 << 17));
if (m == 1) {
v = b.J;
C = b.h;
X = (1 << 9) - 1;
u = (1 << 5) - 1;
}
if (m == 2) {
J = A(N, d, 5) + 257;
h = A(N, d + 5, 5) + 1;
Q = A(N, d + 10, 4) + 4;
d += 14;
var E = d,
j = 1;
for (var c = 0; c < 38; c += 2) {
b.Q[c] = 0;
b.Q[c + 1] = 0;
}
for (var c = 0; c < Q; c++) {
var K = A(N, d + c * 3, 3);
b.Q[(b.X[c] << 1) + 1] = K;
if (K > j) j = K;
}
d += 3 * Q;
M(b.Q, j);
I(b.Q, j, b.u);
v = b.w;
C = b.d;
d = l(b.u, (1 << j) - 1, J + h, N, d, b.v);
var r = V.V(b.v, 0, J, b.C);
X = (1 << r) - 1;
var S = V.V(b.v, J, h, b.D);
u = (1 << S) - 1;
M(b.C, r);
I(b.C, r, v);
M(b.D, S);
I(b.D, S, C);
}
while (!0) {
var T = v[e(N, d) & X];
d += T & 15;
var p = T >>> 4;
if (p >>> 8 == 0) {
W[w++] = p;
} else if (p == 256) {
break;
} else {
var z = w + p - 254;
if (p > 264) {
var _ = b.q[p - 257];
z = w + (_ >>> 3) + A(N, d, _ & 7);
d += _ & 7;
}
var $ = C[e(N, d) & u];
d += $ & 15;
var s = $ >>> 4,
Y = b.c[s],
a = (Y >>> 4) + n(N, d, Y & 15);
d += Y & 15;
while (w < z) {
W[w] = W[w++ - a];
W[w] = W[w++ - a];
W[w] = W[w++ - a];
W[w] = W[w++ - a];
}
w = z;
}
}
}
return W.length == w ? W : W.slice(0, w);
};
H.H.W = function (N, W) {
var R = N.length;
if (W <= R) return N;
var V = new Uint8Array(R << 1);
V.set(N, 0);
return V;
};
H.H.R = function (N, W, R, V, n, A) {
var l = H.H.e,
M = H.H.Z,
I = 0;
while (I < R) {
var e = N[M(V, n) & W];
n += e & 15;
var b = e >>> 4;
if (b <= 15) {
A[I] = b;
I++;
} else {
var Z = 0,
m = 0;
if (b == 16) {
m = 3 + l(V, n, 2);
n += 2;
Z = A[I - 1];
} else if (b == 17) {
m = 3 + l(V, n, 3);
n += 3;
} else if (b == 18) {
m = 11 + l(V, n, 7);
n += 7;
}
var J = I + m;
while (I < J) {
A[I] = Z;
I++;
}
}
}
return n;
};
H.H.V = function (N, W, R, V) {
var n = 0,
A = 0,
l = V.length >>> 1;
while (A < R) {
var M = N[A + W];
V[A << 1] = 0;
V[(A << 1) + 1] = M;
if (M > n) n = M;
A++;
}
while (A < l) {
V[A << 1] = 0;
V[(A << 1) + 1] = 0;
A++;
}
return n;
};
H.H.n = function (N, W) {
var R = H.H.m,
V = N.length,
n,
A,
l,
M,
I,
e = R.j;
for (var M = 0; M <= W; M++) e[M] = 0;
for (M = 1; M < V; M += 2) e[N[M]]++;
var b = R.K;
n = 0;
e[0] = 0;
for (A = 1; A <= W; A++) {
n = n + e[A - 1] << 1;
b[A] = n;
}
for (l = 0; l < V; l += 2) {
I = N[l + 1];
if (I != 0) {
N[l] = b[I];
b[I]++;
}
}
};
H.H.A = function (N, W, R) {
var V = N.length,
n = H.H.m,
A = n.r;
for (var l = 0; l < V; l += 2) if (N[l + 1] != 0) {
var M = l >> 1,
I = N[l + 1],
e = M << 4 | I,
b = W - I,
Z = N[l] << b,
m = Z + (1 << b);
while (Z != m) {
var J = A[Z] >>> 15 - W;
R[J] = e;
Z++;
}
}
};
H.H.l = function (N, W) {
var R = H.H.m.r,
V = 15 - W;
for (var n = 0; n < N.length; n += 2) {
var A = N[n] << W - N[n + 1];
N[n] = R[A] >>> V;
}
};
H.H.M = function (N, W, R) {
R = R << (W & 7);
var V = W >>> 3;
N[V] |= R;
N[V + 1] |= R >>> 8;
};
H.H.I = function (N, W, R) {
R = R << (W & 7);
var V = W >>> 3;
N[V] |= R;
N[V + 1] |= R >>> 8;
N[V + 2] |= R >>> 16;
};
H.H.e = function (N, W, R) {
return (N[W >>> 3] | N[(W >>> 3) + 1] << 8) >>> (W & 7) & (1 << R) - 1;
};
H.H.b = function (N, W, R) {
return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16) >>> (W & 7) & (1 << R) - 1;
};
H.H.Z = function (N, W) {
return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16) >>> (W & 7);
};
H.H.i = function (N, W) {
return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16 | N[(W >>> 3) + 3] << 24) >>> (W & 7);
};
H.H.m = function () {
var N = Uint16Array,
W = Uint32Array;
return {
K: new N(16),
j: new N(16),
X: [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15],
S: [3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 999, 999, 999],
T: [0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0, 0],
q: new N(32),
p: [1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577, 65535, 65535],
z: [0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 0, 0],
c: new W(32),
J: new N(512),
_: [],
h: new N(32),
$: [],
w: new N(32768),
C: [],
v: [],
d: new N(32768),
D: [],
u: new N(512),
Q: [],
r: new N(1 << 15),
s: new W(286),
Y: new W(30),
a: new W(19),
t: new W(15e3),
k: new N(1 << 16),
g: new N(1 << 15)
};
}();
(function () {
var N = H.H.m,
W = 1 << 15;
for (var R = 0; R < W; R++) {
var V = R;
V = (V & 2863311530) >>> 1 | (V & 1431655765) << 1;
V = (V & 3435973836) >>> 2 | (V & 858993459) << 2;
V = (V & 4042322160) >>> 4 | (V & 252645135) << 4;
V = (V & 4278255360) >>> 8 | (V & 16711935) << 8;
N.r[R] = (V >>> 16 | V << 16) >>> 17;
}
function n(A, l, M) {
while (l-- != 0) A.push(0, M);
}
for (var R = 0; R < 32; R++) {
N.q[R] = N.S[R] << 3 | N.T[R];
N.c[R] = N.p[R] << 4 | N.z[R];
}
n(N._, 144, 8);
n(N._, 255 - 143, 9);
n(N._, 279 - 255, 7);
n(N._, 287 - 279, 8);
H.H.n(N._, 9);
H.H.A(N._, 9, N.J);
H.H.l(N._, 9);
n(N.$, 32, 5);
H.H.n(N.$, 5);
H.H.A(N.$, 5, N.h);
H.H.l(N.$, 5);
n(N.Q, 19, 0);
n(N.C, 286, 0);
n(N.D, 30, 0);
n(N.v, 320, 0);
})();
return H.H.N;
}();
UPNG.decode._readInterlace = function (data, out) {
var w = out.width,
h = out.height;
var bpp = UPNG.decode._getBPP(out),
cbpp = bpp >> 3,
bpl = Math.ceil(w * bpp / 8);
var img = new Uint8Array(h * bpl);
var di = 0;
var starting_row = [0, 0, 4, 0, 2, 0, 1];
var starting_col = [0, 4, 0, 2, 0, 1, 0];
var row_increment = [8, 8, 8, 4, 4, 2, 2];
var col_increment = [8, 8, 4, 4, 2, 2, 1];
var pass = 0;
while (pass < 7) {
var ri = row_increment[pass],
ci = col_increment[pass];
var sw = 0,
sh = 0;
var cr = starting_row[pass];
while (cr < h) {
cr += ri;
sh++;
}
var cc = starting_col[pass];
while (cc < w) {
cc += ci;
sw++;
}
var bpll = Math.ceil(sw * bpp / 8);
UPNG.decode._filterZero(data, out, di, sw, sh);
var y = 0,
row = starting_row[pass];
while (row < h) {
var col = starting_col[pass];
var cdi = di + y * bpll << 3;
while (col < w) {
if (bpp == 1) {
var val = data[cdi >> 3];
val = val >> 7 - (cdi & 7) & 1;
img[row * bpl + (col >> 3)] |= val << 7 - ((col & 7) << 0);
}
if (bpp == 2) {
var val = data[cdi >> 3];
val = val >> 6 - (cdi & 7) & 3;
img[row * bpl + (col >> 2)] |= val << 6 - ((col & 3) << 1);
}
if (bpp == 4) {
var val = data[cdi >> 3];
val = val >> 4 - (cdi & 7) & 15;
img[row * bpl + (col >> 1)] |= val << 4 - ((col & 1) << 2);
}
if (bpp >= 8) {
var ii = row * bpl + col * cbpp;
for (var j = 0; j < cbpp; j++) img[ii + j] = data[(cdi >> 3) + j];
}
cdi += bpp;
col += ci;
}
y++;
row += ri;
}
if (sw * sh != 0) di += sh * (1 + bpll);
pass = pass + 1;
}
return img;
};
UPNG.decode._getBPP = function (out) {
var noc = [1, null, 3, 1, 2, null, 4][out.ctype];
return noc * out.depth;
};
UPNG.decode._filterZero = function (data, out, off, w, h) {
var bpp = UPNG.decode._getBPP(out),
bpl = Math.ceil(w * bpp / 8),
paeth = UPNG.decode._paeth;
bpp = Math.ceil(bpp / 8);
var i = 0,
di = 1,
type = data[off],
x = 0;
if (type > 1) data[off] = [0, 0, 1][type - 2];
if (type == 3) for (x = bpp; x < bpl; x++) data[x + 1] = data[x + 1] + (data[x + 1 - bpp] >>> 1) & 255;
for (var y = 0; y < h; y++) {
i = off + y * bpl;
di = i + y + 1;
type = data[di - 1];
x = 0;
if (type == 0) for (; x < bpl; x++) data[i + x] = data[di + x];else if (type == 1) {
for (; x < bpp; x++) data[i + x] = data[di + x];
for (; x < bpl; x++) data[i + x] = data[di + x] + data[i + x - bpp];
} else if (type == 2) {
for (; x < bpl; x++) data[i + x] = data[di + x] + data[i + x - bpl];
} else if (type == 3) {
for (; x < bpp; x++) data[i + x] = data[di + x] + (data[i + x - bpl] >>> 1);
for (; x < bpl; x++) data[i + x] = data[di + x] + (data[i + x - bpl] + data[i + x - bpp] >>> 1);
} else {
for (; x < bpp; x++) data[i + x] = data[di + x] + paeth(0, data[i + x - bpl], 0);
for (; x < bpl; x++) data[i + x] = data[di + x] + paeth(data[i + x - bpp], data[i + x - bpl], data[i + x - bpp - bpl]);
}
}
return data;
};
UPNG.decode._paeth = function (a, b, c) {
var p = a + b - c,
pa = p - a,
pb = p - b,
pc = p - c;
if (pa * pa <= pb * pb && pa * pa <= pc * pc) return a;else if (pb * pb <= pc * pc) return b;
return c;
};
UPNG.decode._IHDR = function (data, offset, out) {
var bin = UPNG._bin;
out.width = bin.readUint(data, offset);
offset += 4;
out.height = bin.readUint(data, offset);
offset += 4;
out.depth = data[offset];
offset++;
out.ctype = data[offset];
offset++;
out.compress = data[offset];
offset++;
out.filter = data[offset];
offset++;
out.interlace = data[offset];
offset++;
};
UPNG._bin = {
nextZero: function (data, p) {
while (data[p] != 0) p++;
return p;
},
readUshort: function (buff, p) {
return buff[p] << 8 | buff[p + 1];
},
writeUshort: function (buff, p, n) {
buff[p] = n >> 8 & 255;
buff[p + 1] = n & 255;
},
readUint: function (buff, p) {
return buff[p] * (256 * 256 * 256) + (buff[p + 1] << 16 | buff[p + 2] << 8 | buff[p + 3]);
},
writeUint: function (buff, p, n) {
buff[p] = n >> 24 & 255;
buff[p + 1] = n >> 16 & 255;
buff[p + 2] = n >> 8 & 255;
buff[p + 3] = n & 255;
},
readASCII: function (buff, p, l) {
var s = "";
for (var i = 0; i < l; i++) s += String.fromCharCode(buff[p + i]);
return s;
},
writeASCII: function (data, p, s) {
for (var i = 0; i < s.length; i++) data[p + i] = s.charCodeAt(i);
},
readBytes: function (buff, p, l) {
var arr = [];
for (var i = 0; i < l; i++) arr.push(buff[p + i]);
return arr;
},
pad: function (n) {
return n.length < 2 ? "0" + n : n;
},
readUTF8: function (buff, p, l) {
var s = "",
ns;
for (var i = 0; i < l; i++) s += "%" + UPNG._bin.pad(buff[p + i].toString(16));
try {
ns = decodeURIComponent(s);
} catch (e) {
return UPNG._bin.readASCII(buff, p, l);
}
return ns;
}
};
UPNG._copyTile = function (sb, sw, sh, tb, tw, th, xoff, yoff, mode) {
var w = Math.min(sw, tw),
h = Math.min(sh, th);
var si = 0,
ti = 0;
for (var y = 0; y < h; y++) for (var x = 0; x < w; x++) {
if (xoff >= 0 && yoff >= 0) {
si = y * sw + x << 2;
ti = (yoff + y) * tw + xoff + x << 2;
} else {
si = (-yoff + y) * sw - xoff + x << 2;
ti = y * tw + x << 2;
}
if (mode == 0) {
tb[ti] = sb[si];
tb[ti + 1] = sb[si + 1];
tb[ti + 2] = sb[si + 2];
tb[ti + 3] = sb[si + 3];
} else if (mode == 1) {
var fa = sb[si + 3] * (1 / 255),
fr = sb[si] * fa,
fg = sb[si + 1] * fa,
fb = sb[si + 2] * fa;
var ba = tb[ti + 3] * (1 / 255),
br = tb[ti] * ba,
bg = tb[ti + 1] * ba,
bb = tb[ti + 2] * ba;
var ifa = 1 - fa,
oa = fa + ba * ifa,
ioa = oa == 0 ? 0 : 1 / oa;
tb[ti + 3] = 255 * oa;
tb[ti + 0] = (fr + br * ifa) * ioa;
tb[ti + 1] = (fg + bg * ifa) * ioa;
tb[ti + 2] = (fb + bb * ifa) * ioa;
} else if (mode == 2) {
// copy only differences, otherwise zero
var fa = sb[si + 3],
fr = sb[si],
fg = sb[si + 1],
fb = sb[si + 2];
var ba = tb[ti + 3],
br = tb[ti],
bg = tb[ti + 1],
bb = tb[ti + 2];
if (fa == ba && fr == br && fg == bg && fb == bb) {
tb[ti] = 0;
tb[ti + 1] = 0;
tb[ti + 2] = 0;
tb[ti + 3] = 0;
} else {
tb[ti] = fr;
tb[ti + 1] = fg;
tb[ti + 2] = fb;
tb[ti + 3] = fa;
}
} else if (mode == 3) {
// check if can be blended
var fa = sb[si + 3],
fr = sb[si],
fg = sb[si + 1],
fb = sb[si + 2];
var ba = tb[ti + 3],
br = tb[ti],
bg = tb[ti + 1],
bb = tb[ti + 2];
if (fa == ba && fr == br && fg == bg && fb == bb) continue; //if(fa!=255 && ba!=0) return false;
if (fa < 220 && ba > 20) return false;
}
}
return true;
};
UPNG.encode = function (bufs, w, h, ps, dels, tabs, forbidPlte) {
if (ps == null) ps = 0;
if (forbidPlte == null) forbidPlte = false;
var nimg = UPNG.encode.compress(bufs, w, h, ps, [false, false, false, 0, forbidPlte]);
UPNG.encode.compressPNG(nimg, -1);
return UPNG.encode._main(nimg, w, h, dels, tabs);
};
UPNG.encodeLL = function (bufs, w, h, cc, ac, depth, dels, tabs) {
var nimg = {
ctype: 0 + (cc == 1 ? 0 : 2) + (ac == 0 ? 0 : 4),
depth: depth,
frames: []
};
var time = Date.now();
var bipp = (cc + ac) * depth,
bipl = bipp * w;
for (var i = 0; i < bufs.length; i++) nimg.frames.push({
rect: {
x: 0,
y: 0,
width: w,
height: h
},
img: new Uint8Array(bufs[i]),
blend: 0,
dispose: 1,
bpp: Math.ceil(bipp / 8),
bpl: Math.ceil(bipl / 8)
});
UPNG.encode.compressPNG(nimg, 0, true);
var out = UPNG.encode._main(nimg, w, h, dels, tabs);
return out;
};
UPNG.encode._main = function (nimg, w, h, dels, tabs) {
if (tabs == null) tabs = {};
var crc = UPNG.crc.crc,
wUi = UPNG._bin.writeUint,
wUs = UPNG._bin.writeUshort,
wAs = UPNG._bin.writeASCII;
var offset = 8,
anim = nimg.frames.length > 1,
pltAlpha = false;
var leng = 8 + (16 + 5 + 4)
/*+ (9+4)*/
+ (anim ? 20 : 0);
if (tabs["sRGB"] != null) leng += 8 + 1 + 4;
if (tabs["pHYs"] != null) leng += 8 + 9 + 4;
if (nimg.ctype == 3) {
var dl = nimg.plte.length;
for (var i = 0; i < dl; i++) if (nimg.plte[i] >>> 24 != 255) pltAlpha = true;
leng += 8 + dl * 3 + 4 + (pltAlpha ? 8 + dl * 1 + 4 : 0);
}
for (var j = 0; j < nimg.frames.length; j++) {
var fr = nimg.frames[j];
if (anim) leng += 38;
leng += fr.cimg.length + 12;
if (j != 0) leng += 4;
}
leng += 12;
var data = new Uint8Array(leng);
var wr = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
for (var i = 0; i < 8; i++) data[i] = wr[i];
wUi(data, offset, 13);
offset += 4;
wAs(data, offset, "IHDR");
offset += 4;
wUi(data, offset, w);
offset += 4;
wUi(data, offset, h);
offset += 4;
data[offset] = nimg.depth;
offset++; // depth
data[offset] = nimg.ctype;
offset++; // ctype
data[offset] = 0;
offset++; // compress
data[offset] = 0;
offset++; // filter
data[offset] = 0;
offset++; // interlace
wUi(data, offset, crc(data, offset - 17, 17));
offset += 4; // crc
// 13 bytes to say, that it is sRGB
if (tabs["sRGB"] != null) {
wUi(data, offset, 1);
offset += 4;
wAs(data, offset, "sRGB");
offset += 4;
data[offset] = tabs["sRGB"];
offset++;
wUi(data, offset, crc(data, offset - 5, 5));
offset += 4; // crc
}
if (tabs["pHYs"] != null) {
wUi(data, offset, 9);
offset += 4;
wAs(data, offset, "pHYs");
offset += 4;
wUi(data, offset, tabs["pHYs"][0]);
offset += 4;
wUi(data, offset, tabs["pHYs"][1]);
offset += 4;
data[offset] = tabs["pHYs"][2];
offset++;
wUi(data, offset, crc(data, offset - 13, 13));
offset += 4; // crc
}
if (anim) {
wUi(data, offset, 8);
offset += 4;
wAs(data, offset, "acTL");
offset += 4;
wUi(data, offset, nimg.frames.length);
offset += 4;
wUi(data, offset, tabs["loop"] != null ? tabs["loop"] : 0);
offset += 4;
wUi(data, offset, crc(data, offset - 12, 12));
offset += 4; // crc
}
if (nimg.ctype == 3) {
var dl = nimg.plte.length;
wUi(data, offset, dl * 3);
offset += 4;
wAs(data, offset, "PLTE");
offset += 4;
for (var i = 0; i < dl; i++) {
var ti = i * 3,
c = nimg.plte[i],
r = c & 255,
g = c >>> 8 & 255,
b = c >>> 16 & 255;
data[offset + ti + 0] = r;
data[offset + ti + 1] = g;
data[offset + ti + 2] = b;
}
offset += dl * 3;
wUi(data, offset, crc(data, offset - dl * 3 - 4, dl * 3 + 4));
offset += 4; // crc
if (pltAlpha) {
wUi(data, offset, dl);
offset += 4;
wAs(data, offset, "tRNS");
offset += 4;
for (var i = 0; i < dl; i++) data[offset + i] = nimg.plte[i] >>> 24 & 255;
offset += dl;
wUi(data, offset, crc(data, offset - dl - 4, dl + 4));
offset += 4; // crc
}
}
var fi = 0;
for (var j = 0; j < nimg.frames.length; j++) {
var fr = nimg.frames[j];
if (anim) {
wUi(data, offset, 26);
offset += 4;
wAs(data, offset, "fcTL");
offset += 4;
wUi(data, offset, fi++);
offset += 4;
wUi(data, offset, fr.rect.width);
offset += 4;
wUi(data, offset, fr.rect.height);
offset += 4;
wUi(data, offset, fr.rect.x);
offset += 4;
wUi(data, offset, fr.rect.y);
offset += 4;
wUs(data, offset, dels[j]);
offset += 2;
wUs(data, offset, 1000);
offset += 2;
data[offset] = fr.dispose;
offset++; // dispose
data[offset] = fr.blend;
offset++; // blend
wUi(data, offset, crc(data, offset - 30, 30));
offset += 4; // crc
}
var imgd = fr.cimg,
dl = imgd.length;
wUi(data, offset, dl + (j == 0 ? 0 : 4));
offset += 4;
var ioff = offset;
wAs(data, offset, j == 0 ? "IDAT" : "fdAT");
offset += 4;
if (j != 0) {
wUi(data, offset, fi++);
offset += 4;
}
data.set(imgd, offset);
offset += dl;
wUi(data, offset, crc(data, ioff, offset - ioff));
offset += 4; // crc
}
wUi(data, offset, 0);
offset += 4;
wAs(data, offset, "IEND");
offset += 4;
wUi(data, offset, crc(data, offset - 4, 4));
offset += 4; // crc
return data.buffer;
};
UPNG.encode.compressPNG = function (out, filter, levelZero) {
for (var i = 0; i < out.frames.length; i++) {
var frm = out.frames[i],
nw = frm.rect.width,
nh = frm.rect.height;
var fdata = new Uint8Array(nh * frm.bpl + nh);
frm.cimg = UPNG.encode._filterZero(frm.img, nh, frm.bpp, frm.bpl, fdata, filter, levelZero);
}
};
UPNG.encode.compress = function (bufs, w, h, ps, prms) // prms: onlyBlend, minBits, forbidPlte
{
//var time = Date.now();
var onlyBlend = prms[0],
evenCrd = prms[1],
forbidPrev = prms[2],
minBits = prms[3],
forbidPlte = prms[4];
var ctype = 6,
depth = 8,
alphaAnd = 255;
for (var j = 0; j < bufs.length; j++) {
// when not quantized, other frames can contain colors, that are not in an initial frame
var img = new Uint8Array(bufs[j]),
ilen = img.length;
for (var i = 0; i < ilen; i += 4) alphaAnd &= img[i + 3];
}
var gotAlpha = alphaAnd != 255; //console.log("alpha check", Date.now()-time); time = Date.now();
//var brute = gotAlpha && forGIF; // brute : frames can only be copied, not "blended"
var frms = UPNG.encode.framize(bufs, w, h, onlyBlend, evenCrd, forbidPrev); //console.log("framize", Date.now()-time); time = Date.now();
var cmap = {},
plte = [],
inds = [];
if (ps != 0) {
var nbufs = [];
for (var i = 0; i < frms.length; i++) nbufs.push(frms[i].img.buffer);
var abuf = UPNG.encode.concatRGBA(nbufs),
qres = UPNG.quantize(abuf, ps);
var cof = 0,
bb = new Uint8Array(qres.abuf);
for (var i = 0; i < frms.length; i++) {
var ti = frms[i].img,
bln = ti.length;
inds.push(new Uint8Array(qres.inds.buffer, cof >> 2, bln >> 2));
for (var j = 0; j < bln; j += 4) {
ti[j] = bb[cof + j];
ti[j + 1] = bb[cof + j + 1];
ti[j + 2] = bb[cof + j + 2];
ti[j + 3] = bb[cof + j + 3];
}
cof += bln;
}
for (var i = 0; i < qres.plte.length; i++) plte.push(qres.plte[i].est.rgba); //console.log("quantize", Date.now()-time); time = Date.now();
} else {
// what if ps==0, but there are <=256 colors? we still need to detect, if the palette could be used
for (var j = 0; j < frms.length; j++) {
// when not quantized, other frames can contain colors, that are not in an initial frame
var frm = frms[j],
img32 = new Uint32Array(frm.img.buffer),
nw = frm.rect.width,
ilen = img32.length;
var ind = new Uint8Array(ilen);
inds.push(ind);
for (var i = 0; i < ilen; i++) {
var c = img32[i];
if (i != 0 && c == img32[i - 1]) ind[i] = ind[i - 1];else if (i > nw && c == img32[i - nw]) ind[i] = ind[i - nw];else {
var cmc = cmap[c];
if (cmc == null) {
cmap[c] = cmc = plte.length;
plte.push(c);
if (plte.length >= 300) break;
}
ind[i] = cmc;
}
}
} //console.log("make palette", Date.now()-time); time = Date.now();
}
var cc = plte.length; //console.log("colors:",cc);
if (cc <= 256 && forbidPlte == false) {
if (cc <= 2) depth = 1;else if (cc <= 4) depth = 2;else if (cc <= 16) depth = 4;else depth = 8;
depth = Math.max(depth, minBits);
}
for (var j = 0; j < frms.length; j++) {
var frm = frms[j],
nx = frm.rect.x,
ny = frm.rect.y,
nw = frm.rect.width,
nh = frm.rect.height;
var cimg = frm.img,
cimg32 = new Uint32Array(cimg.buffer);
var bpl = 4 * nw,
bpp = 4;
if (cc <= 256 && forbidPlte == false) {
bpl = Math.ceil(depth * nw / 8);
var nimg = new Uint8Array(bpl * nh);
var inj = inds[j];
for (var y = 0; y < nh; y++) {
var i = y * bpl,
ii = y * nw;
if (depth == 8) for (var x = 0; x < nw; x++) nimg[i + x] = inj[ii + x];else if (depth == 4) for (var x = 0; x < nw; x++) nimg[i + (x >> 1)] |= inj[ii + x] << 4 - (x & 1) * 4;else if (depth == 2) for (var x = 0; x < nw; x++) nimg[i + (x >> 2)] |= inj[ii + x] << 6 - (x & 3) * 2;else if (depth == 1) for (var x = 0; x < nw; x++) nimg[i + (x >> 3)] |= inj[ii + x] << 7 - (x & 7) * 1;
}
cimg = nimg;
ctype = 3;
bpp = 1;
} else if (gotAlpha == false && frms.length == 1) {
// some next "reduced" frames may contain alpha for blending
var nimg = new Uint8Array(nw * nh * 3),
area = nw * nh;
for (var i = 0; i < area; i++) {
var ti = i * 3,
qi = i * 4;
nimg[ti] = cimg[qi];
nimg[ti + 1] = cimg[qi + 1];
nimg[ti + 2] = cimg[qi + 2];
}
cimg = nimg;
ctype = 2;
bpp = 3;
bpl = 3 * nw;
}
frm.img = cimg;
frm.bpl = bpl;
frm.bpp = bpp;
} //console.log("colors => palette indices", Date.now()-time); time = Date.now();
return {
ctype: ctype,
depth: depth,
plte: plte,
frames: frms
};
};
UPNG.encode.framize = function (bufs, w, h, alwaysBlend, evenCrd, forbidPrev) {
/* DISPOSE
- 0 : no change
- 1 : clear to transparent
- 2 : retstore to content before rendering (previous frame disposed)
BLEND
- 0 : replace
- 1 : blend
*/
var frms = [];
for (var j = 0; j < bufs.length; j++) {
var cimg = new Uint8Array(bufs[j]),
cimg32 = new Uint32Array(cimg.buffer);
var nimg;
var nx = 0,
ny = 0,
nw = w,
nh = h,
blend = alwaysBlend ? 1 : 0;
if (j != 0) {
var tlim = forbidPrev || alwaysBlend || j == 1 || frms[j - 2].dispose != 0 ? 1 : 2,
tstp = 0,
tarea = 1e9;
for (var it = 0; it < tlim; it++) {
var pimg = new Uint8Array(bufs[j - 1 - it]),
p32 = new Uint32Array(bufs[j - 1 - it]);
var mix = w,
miy = h,
max = -1,
may = -1;
for (var y = 0; y < h; y++) for (var x = 0; x < w; x++) {
var i = y * w + x;
if (cimg32[i] != p32[i]) {
if (x < mix) mix = x;
if (x > max) max = x;
if (y < miy) miy = y;
if (y > may) may = y;
}
}
if (max == -1) mix = miy = max = may = 0;
if (evenCrd) {
if ((mix & 1) == 1) mix--;
if ((miy & 1) == 1) miy--;
}
var sarea = (max - mix + 1) * (may - miy + 1);
if (sarea < tarea) {
tarea = sarea;
tstp = it;
nx = mix;
ny = miy;
nw = max - mix + 1;
nh = may - miy + 1;
}
} // alwaysBlend: pokud zjistím, že blendit nelze, nastavím předchozímu snímku dispose=1. Zajistím, aby obsahoval můj obdélník.
var pimg = new Uint8Array(bufs[j - 1 - tstp]);
if (tstp == 1) frms[j - 1].dispose = 2;
nimg = new Uint8Array(nw * nh * 4);
UPNG._copyTile(pimg, w, h, nimg, nw, nh, -nx, -ny, 0);
blend = UPNG._copyTile(cimg, w, h, nimg, nw, nh, -nx, -ny, 3) ? 1 : 0;
if (blend == 1) UPNG.encode._prepareDiff(cimg, w, h, nimg, {
x: nx,
y: ny,
width: nw,
height: nh
});else UPNG._copyTile(cimg, w, h, nimg, nw, nh, -nx, -ny, 0); //UPNG._copyTile(cimg,w,h, nimg,nw,nh, -nx,-ny, blend==1?2:0);
} else nimg = cimg.slice(0); // img may be rewritten further ... don't rewrite input
frms.push({
rect: {
x: nx,
y: ny,
width: nw,
height: nh
},
img: nimg,
blend: blend,
dispose: 0
});
}
if (alwaysBlend) for (var j = 0; j < frms.length; j++) {
var frm = frms[j];
if (frm.blend == 1) continue;
var r0 = frm.rect,
r1 = frms[j - 1].rect;
var miX = Math.min(r0.x, r1.x),
miY = Math.min(r0.y, r1.y);
var maX = Math.max(r0.x + r0.width, r1.x + r1.width),
maY = Math.max(r0.y + r0.height, r1.y + r1.height);
var r = {
x: miX,
y: miY,
width: maX - miX,
height: maY - miY
};
frms[j - 1].dispose = 1;
if (j - 1 != 0) UPNG.encode._updateFrame(bufs, w, h, frms, j - 1, r, evenCrd);
UPNG.encode._updateFrame(bufs, w, h, frms, j, r, evenCrd);
}
var area = 0;
if (bufs.length != 1) for (var i = 0; i < frms.length; i++) {
var frm = frms[i];
area += frm.rect.width * frm.rect.height; //if(i==0 || frm.blend!=1) continue;
//var ob = new Uint8Array(
//console.log(frm.blend, frm.dispose, frm.rect);
} //if(area!=0) console.log(area);
return frms;
};
UPNG.encode._updateFrame = function (bufs, w, h, frms, i, r, evenCrd) {
var U8 = Uint8Array,
U32 = Uint32Array;
var pimg = new U8(bufs[i - 1]),
pimg32 = new U32(bufs[i - 1]),
nimg = i + 1 < bufs.length ? new U8(bufs[i + 1]) : null;
var cimg = new U8(bufs[i]),
cimg32 = new U32(cimg.buffer);
var mix = w,
miy = h,
max = -1,
may = -1;
for (var y = 0; y < r.height; y++) for (var x = 0; x < r.width; x++) {
var cx = r.x + x,
cy = r.y + y;
var j = cy * w + cx,
cc = cimg32[j]; // no need to draw transparency, or to dispose it. Or, if writing the same color and the next one does not need transparency.
if (cc == 0 || frms[i - 1].dispose == 0 && pimg32[j] == cc && (nimg == null || nimg[j * 4 + 3] != 0)
/**/
) {} else {
if (cx < mix) mix = cx;
if (cx > max) max = cx;
if (cy < miy) miy = cy;
if (cy > may) may = cy;
}
}
if (max == -1) mix = miy = max = may = 0;
if (evenCrd) {
if ((mix & 1) == 1) mix--;
if ((miy & 1) == 1) miy--;
}
r = {
x: mix,
y: miy,
width: max - mix + 1,
height: may - miy + 1
};
var fr = frms[i];
fr.rect = r;
fr.blend = 1;
fr.img = new Uint8Array(r.width * r.height * 4);
if (frms[i - 1].dispose == 0) {
UPNG._copyTile(pimg, w, h, fr.img, r.width, r.height, -r.x, -r.y, 0);
UPNG.encode._prepareDiff(cimg, w, h, fr.img, r); //UPNG._copyTile(cimg,w,h, fr.img,r.width,r.height, -r.x,-r.y, 2);
} else UPNG._copyTile(cimg, w, h, fr.img, r.width, r.height, -r.x, -r.y, 0);
};
UPNG.encode._prepareDiff = function (cimg, w, h, nimg, rec) {
UPNG._copyTile(cimg, w, h, nimg, rec.width, rec.height, -rec.x, -rec.y, 2);
/*
var n32 = new Uint32Array(nimg.buffer);
var og = new Uint8Array(rec.width*rec.height*4), o32 = new Uint32Array(og.buffer);
UPNG._copyTile(cimg,w,h, og,rec.width,rec.height, -rec.x,-rec.y, 0);
for(var i=4; i<nimg.length; i+=4) {
if(nimg[i-1]!=0 && nimg[i+3]==0 && o32[i>>>2]==o32[(i>>>2)-1]) {
n32[i>>>2]=o32[i>>>2];
//var j = i, c=p32[(i>>>2)-1];
//while(p32[j>>>2]==c) { n32[j>>>2]=c; j+=4; }
}
}
for(var i=nimg.length-8; i>0; i-=4) {
if(nimg[i+7]!=0 && nimg[i+3]==0 && o32[i>>>2]==o32[(i>>>2)+1]) {
n32[i>>>2]=o32[i>>>2];
//var j = i, c=p32[(i>>>2)-1];
//while(p32[j>>>2]==c) { n32[j>>>2]=c; j+=4; }
}
}*/
};
UPNG.encode._filterZero = function (img, h, bpp, bpl, data, filter, levelZero) {
var fls = [],
ftry = [0, 1, 2, 3, 4];
if (filter != -1) ftry = [filter];else if (h * bpl > 500000 || bpp == 1) ftry = [0];
var opts;
if (levelZero) opts = {
level: 0
};
var CMPR = levelZero && UZIP != null ? UZIP : _pako.default;
for (var i = 0; i < ftry.length; i++) {
for (var y = 0; y < h; y++) UPNG.encode._filterLine(data, img, y, bpl, bpp, ftry[i]); //var nimg = new Uint8Array(data.length);
//var sz = UZIP.F.deflate(data, nimg); fls.push(nimg.slice(0,sz));
//var dfl = pako["deflate"](data), dl=dfl.length-4;
//var crc = (dfl[dl+3]<<24)|(dfl[dl+2]<<16)|(dfl[dl+1]<<8)|(dfl[dl+0]<<0);
//console.log(crc, UZIP.adler(data,2,data.length-6));
fls.push(CMPR["deflate"](data, opts));
}
var ti,
tsize = 1e9;
for (var i = 0; i < fls.length; i++) if (fls[i].length < tsize) {
ti = i;
tsize = fls[i].length;
}
return fls[ti];
};
UPNG.encode._filterLine = function (data, img, y, bpl, bpp, type) {
var i = y * bpl,
di = i + y,
paeth = UPNG.decode._paeth;
data[di] = type;
di++;
if (type == 0) {
if (bpl < 500) for (var x = 0; x < bpl; x++) data[di + x] = img[i + x];else data.set(new Uint8Array(img.buffer, i, bpl), di);
} else if (type == 1) {
for (var x = 0; x < bpp; x++) data[di + x] = img[i + x];
for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x] - img[i + x - bpp] + 256 & 255;
} else if (y == 0) {
for (var x = 0; x < bpp; x++) data[di + x] = img[i + x];
if (type == 2) for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x];
if (type == 3) for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x] - (img[i + x - bpp] >> 1) + 256 & 255;
if (type == 4) for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x] - paeth(img[i + x - bpp], 0, 0) + 256 & 255;
} else {
if (type == 2) {
for (var x = 0; x < bpl; x++) data[di + x] = img[i + x] + 256 - img[i + x - bpl] & 255;
}
if (type == 3) {
for (var x = 0; x < bpp; x++) data[di + x] = img[i + x] + 256 - (img[i + x - bpl] >> 1) & 255;
for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x] + 256 - (img[i + x - bpl] + img[i + x - bpp] >> 1) & 255;
}
if (type == 4) {
for (var x = 0; x < bpp; x++) data[di + x] = img[i + x] + 256 - paeth(0, img[i + x - bpl], 0) & 255;
for (var x = bpp; x < bpl; x++) data[di + x] = img[i + x] + 256 - paeth(img[i + x - bpp], img[i + x - bpl], img[i + x - bpp - bpl]) & 255;
}
}
};
UPNG.crc = {
table: function () {
var tab = new Uint32Array(256);
for (var n = 0; n < 256; n++) {
var c = n;
for (var k = 0; k < 8; k++) {
if (c & 1) c = 0xedb88320 ^ c >>> 1;else c = c >>> 1;
}
tab[n] = c;
}
return tab;
}(),
update: function (c, buf, off, len) {
for (var i = 0; i < len; i++) c = UPNG.crc.table[(c ^ buf[off + i]) & 0xff] ^ c >>> 8;
return c;
},
crc: function (b, o, l) {
return UPNG.crc.update(0xffffffff, b, o, l) ^ 0xffffffff;
}
};
UPNG.quantize = function (abuf, ps) {
var oimg = new Uint8Array(abuf),
nimg = oimg.slice(0),
nimg32 = new Uint32Array(nimg.buffer);
var KD = UPNG.quantize.getKDtree(nimg, ps);
var root = KD[0],
leafs = KD[1];
var planeDst = UPNG.quantize.planeDst;
var sb = oimg,
tb = nimg32,
len = sb.length;
var inds = new Uint8Array(oimg.length >> 2);
for (var i = 0; i < len; i += 4) {
var r = sb[i] * (1 / 255),
g = sb[i + 1] * (1 / 255),
b = sb[i + 2] * (1 / 255),
a = sb[i + 3] * (1 / 255); // exact, but too slow :(
var nd = UPNG.quantize.getNearest(root, r, g, b, a); //var nd = root;
//while(nd.left) nd = (planeDst(nd.est,r,g,b,a)<=0) ? nd.left : nd.right;
inds[i >> 2] = nd.ind;
tb[i >> 2] = nd.est.rgba;
}
return {
abuf: nimg.buffer,
inds: inds,
plte: leafs
};
};
UPNG.quantize.getKDtree = function (nimg, ps, err) {
if (err == null) err = 0.0001;
var nimg32 = new Uint32Array(nimg.buffer);
var root = {
i0: 0,
i1: nimg.length,
bst: null,
est: null,
tdst: 0,
left: null,
right: null
}; // basic statistic, extra statistic
root.bst = UPNG.quantize.stats(nimg, root.i0, root.i1);
root.est = UPNG.quantize.estats(root.bst);
var leafs = [root];
while (leafs.length < ps) {
var maxL = 0,
mi = 0;
for (var i = 0; i < leafs.length; i++) if (leafs[i].est.L > maxL) {
maxL = leafs[i].est.L;
mi = i;
}
if (maxL < err) break;
var node = leafs[mi];
var s0 = UPNG.quantize.splitPixels(nimg, nimg32, node.i0, node.i1, node.est.e, node.est.eMq255);
var s0wrong = node.i0 >= s0 || node.i1 <= s0; //console.log(maxL, leafs.length, mi);
if (s0wrong) {
node.est.L = 0;
continue;
}
var ln = {
i0: node.i0,
i1: s0,
bst: null,
est: null,
tdst: 0,
left: null,
right: null
};
ln.bst = UPNG.quantize.stats(nimg, ln.i0, ln.i1);
ln.est = UPNG.quantize.estats(ln.bst);
var rn = {
i0: s0,
i1: node.i1,
bst: null,
est: null,
tdst: 0,
left: null,
right: null
};
rn.bst = {
R: [],
m: [],
N: node.bst.N - ln.bst.N
};
for (var i = 0; i < 16; i++) rn.bst.R[i] = node.bst.R[i] - ln.bst.R[i];
for (var i = 0; i < 4; i++) rn.bst.m[i] = node.bst.m[i] - ln.bst.m[i];
rn.est = UPNG.quantize.estats(rn.bst);
node.left = ln;
node.right = rn;
leafs[mi] = ln;
leafs.push(rn);
}
leafs.sort(function (a, b) {
return b.bst.N - a.bst.N;
});
for (var i = 0; i < leafs.length; i++) leafs[i].ind = i;
return [root, leafs];
};
UPNG.quantize.getNearest = function (nd, r, g, b, a) {
if (nd.left == null) {
nd.tdst = UPNG.quantize.dist(nd.est.q, r, g, b, a);
return nd;
}
var planeDst = UPNG.quantize.planeDst(nd.est, r, g, b, a);
var node0 = nd.left,
node1 = nd.right;
if (planeDst > 0) {
node0 = nd.right;
node1 = nd.left;
}
var ln = UPNG.quantize.getNearest(node0, r, g, b, a);
if (ln.tdst <= planeDst * planeDst) return ln;
var rn = UPNG.quantize.getNearest(node1, r, g, b, a);
return rn.tdst < ln.tdst ? rn : ln;
};
UPNG.quantize.planeDst = function (est, r, g, b, a) {
var e = est.e;
return e[0] * r + e[1] * g + e[2] * b + e[3] * a - est.eMq;
};
UPNG.quantize.dist = function (q, r, g, b, a) {
var d0 = r - q[0],
d1 = g - q[1],
d2 = b - q[2],
d3 = a - q[3];
return d0 * d0 + d1 * d1 + d2 * d2 + d3 * d3;
};
UPNG.quantize.splitPixels = function (nimg, nimg32, i0, i1, e, eMq) {
var vecDot = UPNG.quantize.vecDot;
i1 -= 4;
var shfs = 0;
while (i0 < i1) {
while (vecDot(nimg, i0, e) <= eMq) i0 += 4;
while (vecDot(nimg, i1, e) > eMq) i1 -= 4;
if (i0 >= i1) break;
var t = nimg32[i0 >> 2];
nimg32[i0 >> 2] = nimg32[i1 >> 2];
nimg32[i1 >> 2] = t;
i0 += 4;
i1 -= 4;
}
while (vecDot(nimg, i0, e) > eMq) i0 -= 4;
return i0 + 4;
};
UPNG.quantize.vecDot = function (nimg, i, e) {
return nimg[i] * e[0] + nimg[i + 1] * e[1] + nimg[i + 2] * e[2] + nimg[i + 3] * e[3];
};
UPNG.quantize.stats = function (nimg, i0, i1) {
var R = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
var m = [0, 0, 0, 0];
var N = i1 - i0 >> 2;
for (var i = i0; i < i1; i += 4) {
var r = nimg[i] * (1 / 255),
g = nimg[i + 1] * (1 / 255),
b = nimg[i + 2] * (1 / 255),
a = nimg[i + 3] * (1 / 255); //var r = nimg[i], g = nimg[i+1], b = nimg[i+2], a = nimg[i+3];
m[0] += r;
m[1] += g;
m[2] += b;
m[3] += a;
R[0] += r * r;
R[1] += r * g;
R[2] += r * b;
R[3] += r * a;
R[5] += g * g;
R[6] += g * b;
R[7] += g * a;
R[10] += b * b;
R[11] += b * a;
R[15] += a * a;
}
R[4] = R[1];
R[8] = R[2];
R[9] = R[6];
R[12] = R[3];
R[13] = R[7];
R[14] = R[11];
return {
R: R,
m: m,
N: N
};
};
UPNG.quantize.estats = function (stats) {
var R = stats.R,
m = stats.m,
N = stats.N; // when all samples are equal, but N is large (millions), the Rj can be non-zero ( 0.0003.... - precission error)
var m0 = m[0],
m1 = m[1],
m2 = m[2],
m3 = m[3],
iN = N == 0 ? 0 : 1 / N;
var Rj = [R[0] - m0 * m0 * iN, R[1] - m0 * m1 * iN, R[2] - m0 * m2 * iN, R[3] - m0 * m3 * iN, R[4] - m1 * m0 * iN, R[5] - m1 * m1 * iN, R[6] - m1 * m2 * iN, R[7] - m1 * m3 * iN, R[8] - m2 * m0 * iN, R[9] - m2 * m1 * iN, R[10] - m2 * m2 * iN, R[11] - m2 * m3 * iN, R[12] - m3 * m0 * iN, R[13] - m3 * m1 * iN, R[14] - m3 * m2 * iN, R[15] - m3 * m3 * iN];
var A = Rj,
M = UPNG.M4;
var b = [0.5, 0.5, 0.5, 0.5],
mi = 0,
tmi = 0;
if (N != 0) for (var i = 0; i < 10; i++) {
b = M.multVec(A, b);
tmi = Math.sqrt(M.dot(b, b));
b = M.sml(1 / tmi, b);
if (Math.abs(tmi - mi) < 1e-9) break;
mi = tmi;
} //b = [0,0,1,0]; mi=N;
var q = [m0 * iN, m1 * iN, m2 * iN, m3 * iN];
var eMq255 = M.dot(M.sml(255, q), b);
return {
Cov: Rj,
q: q,
e: b,
L: mi,
eMq255: eMq255,
eMq: M.dot(b, q),
rgba: (Math.round(255 * q[3]) << 24 | Math.round(255 * q[2]) << 16 | Math.round(255 * q[1]) << 8 | Math.round(255 * q[0]) << 0) >>> 0
};
};
UPNG.M4 = {
multVec: function (m, v) {
return [m[0] * v[0] + m[1] * v[1] + m[2] * v[2] + m[3] * v[3], m[4] * v[0] + m[5] * v[1] + m[6] * v[2] + m[7] * v[3], m[8] * v[0] + m[9] * v[1] + m[10] * v[2] + m[11] * v[3], m[12] * v[0] + m[13] * v[1] + m[14] * v[2] + m[15] * v[3]];
},
dot: function (x, y) {
return x[0] * y[0] + x[1] * y[1] + x[2] * y[2] + x[3] * y[3];
},
sml: function (a, y) {
return [a * y[0], a * y[1], a * y[2], a * y[3]];
}
};
UPNG.encode.concatRGBA = function (bufs) {
var tlen = 0;
for (var i = 0; i < bufs.length; i++) tlen += bufs[i].byteLength;
var nimg = new Uint8Array(tlen),
noff = 0;
for (var i = 0; i < bufs.length; i++) {
var img = new Uint8Array(bufs[i]),
il = img.length;
for (var j = 0; j < il; j += 4) {
var r = img[j],
g = img[j + 1],
b = img[j + 2],
a = img[j + 3];
if (a == 0) r = g = b = 0;
nimg[noff + j] = r;
nimg[noff + j + 1] = g;
nimg[noff + j + 2] = b;
nimg[noff + j + 3] = a;
}
noff += il;
}
return nimg.buffer;
};
var _default = UPNG;
exports.default = _default;
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