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Fill the initial JBIG2 buffer with 0xFF only if defaultPixelValue is set

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Per the TypedArray specification, ArrayBuffers are initialized with zeros.

http://www.khronos.org/registry/typedarray/specs/latest/#5
This commit is contained in:
Mathieu 'p01' Henri 2014-02-27 13:13:58 +01:00 committed by p01
parent 7657011985
commit 135660c8ba
1 changed files with 9 additions and 5 deletions
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10
src/core/jbig2.js
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@ -994,9 +994,13 @@ var Jbig2Image = (function Jbig2ImageClosure() {
this.currentPageInfo = info;
var rowSize = (info.width + 7) >> 3;
var buffer = new Uint8Array(rowSize * info.height);
var fill = info.defaultPixelValue ? 0xFF : 0;
for (var i = 0, ii = buffer.length; i < ii; i++)
buffer[i] = fill;
// The contents of ArrayBuffers are initialized to 0.
// Fill the buffer with 0xFF only if info.defaultPixelValue is set
if (info.defaultPixelValue) {
for (var i = 0, ii = buffer.length; i < ii; i++) {
buffer[i] = 0xFF;
}
}
this.buffer = buffer;
},
drawBitmap: function SimpleSegmentVisitor_drawBitmap(regionInfo, bitmap) {