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make lengthDecode a typed array

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This commit is contained in:
Andreas Gal 2011-06-04 10:18:04 -07:00
parent cd7c229ccc
commit 9143ad4cf5
1 changed files with 10 additions and 35 deletions
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45
pdf.js
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@ -116,39 +116,13 @@ var FlateStream = (function() {
16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15
]);
const lengthDecode = [
[0, 3],
[0, 4],
[0, 5],
[0, 6],
[0, 7],
[0, 8],
[0, 9],
[0, 10],
[1, 11],
[1, 13],
[1, 15],
[1, 17],
[2, 19],
[2, 23],
[2, 27],
[2, 31],
[3, 35],
[3, 43],
[3, 51],
[3, 59],
[4, 67],
[4, 83],
[4, 99],
[4, 115],
[5, 131],
[5, 163],
[5, 195],
[5, 227],
[0, 258],
[0, 258],
[0, 258]
];
const lengthDecode = new Uint32Array([
0x00003, 0x00004, 0x00005, 0x00006, 0x00007, 0x00008, 0x00009,
0x0000a, 0x1000b, 0x1000d, 0x1000f, 0x10011, 0x20013, 0x20017,
0x2001b, 0x2001f, 0x30023, 0x3002b, 0x30033, 0x3003b, 0x40043,
0x40053, 0x40063, 0x40073, 0x50083, 0x500a3, 0x500c3, 0x500e3,
0x00102, 0x00102, 0x00102
]);
const distDecode = [
[0, 1],
@ -964,10 +938,11 @@ var FlateStream = (function() {
buffer[pos++] = code1;
} else {
code1 -= 257;
var code2 = lengthDecode[code1][0];
code1 = lengthDecode[code1];
var code2 = code1 >> 16;
if (code2 > 0)
code2 = this.getBits(code2);
var len = lengthDecode[code1][1] + code2;
var len = (code1 & 0xffff) + code2;
code1 = this.getCode(distCodeTable);
code2 = distDecode[code1][0];
if (code2 > 0)