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neo-blessed
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update tng.

This commit is contained in:
Christopher Jeffrey 2015-07-06 02:26:26 -07:00
parent ab8e309268
commit 7197a4e16d
1 changed files with 149 additions and 12 deletions
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161
vendor/tng.js vendored
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@ -92,21 +92,24 @@ PNG.prototype.parseRaw = function(buf) {
while (i < buf.length) {
try {
pos = i;
len = buf.readUInt32BE(i);
i += 4;
pos = i;
type = buf.slice(i, i + 4);
name = type.toString('ascii');
i += 4;
data = buf.slice(i, i + len);
i += len;
check = this.crc32(buf.slice(pos, i));
crc = buf.readUInt32BE(i);
crc = buf.readInt32BE(i);
i += 4;
critical = !!(~type[0] & 32);
public_ = !!(~type[1] & 32);
conforming = !!(~type[2] & 32);
copysafe = !!(~type[3] & 32);
if (crc !== check) {
throw new Error(name + ': bad crc');
}
} catch (e) {
if (this.options.debug) throw e;
break;
@ -1200,9 +1203,91 @@ PNG.prototype.decompress = function(buffers) {
}, [])));
};
PNG.prototype.crc32 = function(data) {
return 0;
};
/**
* node-crc
* https://github.com/alexgorbatchev/node-crc
* https://github.com/alexgorbatchev/node-crc/blob/master/LICENSE
*
* The MIT License (MIT)
*
* Copyright 2014 Alex Gorbatchev
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
PNG.prototype.crc32 = (function() {
var crcTable = [
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
];
return function crc32(buf) {
//var crc = previous === 0 ? 0 : ~~previous ^ -1;
var crc = -1;
for (var i = 0, len = buf.length; i < len; i++) {
crc = crcTable[(crc ^ buf[i]) & 0xff] ^ (crc >>> 8);
}
return crc ^ -1;
};
})();
PNG.prototype._debug = function() {
if (!this.options.log) return;
@ -1236,6 +1321,14 @@ function GIF(file, options) {
options = options || {};
this.options = options;
// XXX If the gif is not optimized enough
// it may OOM the process with too many frames.
// TODO: Implement in PNG reader.
this.pixelLimit = this.options.pixelLimit || 7622550;
this.totalPixels = 0;
if (Buffer.isBuffer(file)) {
buf = file;
file = null;
@ -1315,7 +1408,7 @@ function GIF(file, options) {
while (buf[p] !== 0x00) {
// Some gifs screw up their size.
// XXX Same for all subblocks?
if (buf[p] === 0x3b) {
if (buf[p] === 0x3b && p === buf.length - 1) {
p--;
break;
}
@ -1328,7 +1421,17 @@ function GIF(file, options) {
assert.equal(buf.readUInt8(p), 0x00);
p += 1;
if (ext && ext.label === 0xf9) {
img.control = ext;
}
this.totalPixels += img.width * img.height;
this.images.push(img);
if (this.totalPixels >= this.pixelLimit) {
break;
}
} else if (desc === 0x21) {
// Extensions:
// http://www.w3.org/Graphics/GIF/spec-gif89a.txt
@ -1360,6 +1463,7 @@ function GIF(file, options) {
this.disposeMethod = ext.disposeMethod;
this.useTransparent = ext.useTransparent;
} else if (label === 0xff) {
// https://wiki.whatwg.org/wiki/GIF#Specifications
size = buf.readUInt8(p);
p += 1;
ext.id = buf.slice(p, p + 8).toString('ascii');
@ -1373,11 +1477,42 @@ function GIF(file, options) {
ext.data.push(buf.slice(p, p + size));
p += size;
}
// http://graphcomp.com/info/specs/ani_gif.html
ext.data = new Buffer(ext.data.reduce(function(out, data) {
return out.concat(Array.prototype.slice.call(data));
}, []));
// AnimExts looping extension (identical to netscape)
if (ext.id === 'ANIMEXTS' && ext.auth === '1.0') {
ext.id = 'NETSCAPE';
ext.auth = '2.0';
ext.animexts = true;
}
// Netscape extensions
if (ext.id === 'NETSCAPE' && ext.auth === '2.0') {
assert.equal(ext.data[0].readUInt8(0), 0x01);
ext.numPlays = ext.data[0].readUInt16LE(1);
this.numPlays = ext.numPlays;
if (ext.data.readUInt8(0) === 0x01) {
// Netscape looping extension
// http://graphcomp.com/info/specs/ani_gif.html
ext.numPlays = ext.data.readUInt16LE(1);
this.numPlays = ext.numPlays;
} else if (ext.data.readUInt8(0) === 0x02) {
// Netscape buffering extension
this.minBuffer = ext.data;
}
}
// Adobe XMP extension
if (ext.id === 'XMP Data' && ext.auth === 'XMP') {
ext.data = ext.data.toString('utf8');
this.xmp = ext.xmp;
}
// ICC extension
if (ext.id === 'ICCRGBG1' && ext.auth === '012') {
// NOTE: Says size is 4 bytes, not 1? Maybe just buffer size?
this.icc = ext.data;
}
// fractint extension
if (ext.id === 'fractint' && /^00[1-7]$/.test(ext.auth)) {
// NOTE: Says size is 4 bytes, not 1? Maybe just buffer size?
// Size: '!\377\013' == [0x00, 0x15, 0xff, 0x0b]
this.fractint = ext.data;
}
assert.equal(buf.readUInt8(p), 0x00);
p += 1;
@ -1408,7 +1543,9 @@ function GIF(file, options) {
}
}
this.images = this.images.map(function(img) {
this.images = this.images.map(function(img, imageIndex) {
var control = img.control || this;
img.lzw = new Buffer(img.lzw.reduce(function(out, data) {
return out.concat(Array.prototype.slice.call(data));
}, []));
@ -1456,7 +1593,7 @@ function GIF(file, options) {
img.samples[idx + 1] = table[b][1];
img.samples[idx + 2] = table[b][2];
img.samples[idx + 3] = table[b][3];
if (this.useTransparent && b === this.transparentColor) {
if (control.useTransparent && b === control.transparentColor) {
img.samples[idx + 3] = 0;
}
if (++col >= img.width) {