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Merge pull request #335 from notmasteryet/lzw-mem

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Reducing memory usage in LZWStream
This commit is contained in:
Chris Jones 2011-08-18 16:58:38 -07:00
commit 8f4967d0b8
1 changed files with 5 additions and 1 deletions
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pdf.js
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@ -1990,7 +1990,7 @@ var LZWStream = (function() {
this.cachedData = 0; this.cachedData = 0;
this.bitsCached = 0; this.bitsCached = 0;
var maxLzwDictionarySize = 4097; var maxLzwDictionarySize = 4096;
var lzwState = { var lzwState = {
earlyChange: earlyChange, earlyChange: earlyChange,
codeLength: 9, codeLength: 9,
@ -2036,6 +2036,9 @@ var LZWStream = (function() {
var i, j, q; var i, j, q;
var lzwState = this.lzwState; var lzwState = this.lzwState;
if (!lzwState)
return; // eof was found
var earlyChange = lzwState.earlyChange; var earlyChange = lzwState.earlyChange;
var nextCode = lzwState.nextCode; var nextCode = lzwState.nextCode;
var dictionaryValues = lzwState.dictionaryValues; var dictionaryValues = lzwState.dictionaryValues;
@ -2073,6 +2076,7 @@ var LZWStream = (function() {
continue; continue;
} else { } else {
this.eof = true; this.eof = true;
delete this.lzwState;
break; break;
} }