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Fixed predictor

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This commit is contained in:
sbarman 2011-06-18 13:06:54 -07:00
parent 0b9b0390b6
commit 609230ad07
1 changed files with 8 additions and 7 deletions
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15
pdf.js
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@ -519,8 +519,9 @@ var FilterPredictor = (function() {
this.bits = bits; this.bits = bits;
this.nVals = width * colors; this.nVals = width * colors;
this.pixBytes = (colors * bits + 7) >> 3; var pixBytes = (colors * bits + 7) >> 3;
var rowBytes = (width * colors * bits + 7) >> 3; this.pixBytes = pixBytes;
var rowBytes = ((width * colors * bits + 7) >> 3) + pixBytes;
this.rowBytes = rowBytes; this.rowBytes = rowBytes;
if (width < 0 || colors < 0 || bits < 0 ||bits > 16) if (width < 0 || colors < 0 || bits < 0 ||bits > 16)
@ -569,7 +570,7 @@ var FilterPredictor = (function() {
for (var i = 0, ii = pixBytes + 1; i < ii; ++i) for (var i = 0, ii = pixBytes + 1; i < ii; ++i)
upLeftBuf.push(0); upLeftBuf.push(0);
for (var i = pixBytes, ii = rowBytes; i < ii; ++i) { for (var i = pixBytes, ii = rowBytes + pixBytes + 1; i < ii; ++i) {
for (var j = pixBytes; j > 0; --j) { for (var j = pixBytes; j > 0; --j) {
upLeftBuf[j] = upLeftBuf[j - 1]; upLeftBuf[j] = upLeftBuf[j - 1];
} }
@ -2118,7 +2119,7 @@ var CanvasGraphics = (function() {
var widths = xref.fetchIfRef(fontDict.get("Widths")); var widths = xref.fetchIfRef(fontDict.get("Widths"));
var firstChar = xref.fetchIfRef(fontDict.get("FirstChar")); var firstChar = xref.fetchIfRef(fontDict.get("FirstChar"));
assertWellFormed(IsArray(widths) && IsInteger(firstChar), assertWellFormed(IsArray(widths) && IsInt(firstChar),
"invalid font Widths or FirstChar"); "invalid font Widths or FirstChar");
var charset = []; var charset = [];
for (var j = 0; j < widths.length; j++) { for (var j = 0; j < widths.length; j++) {
@ -2775,9 +2776,9 @@ var CanvasGraphics = (function() {
if (bitsPerComponent != 8) if (bitsPerComponent != 8)
error("unhandled number of bits per component"); error("unhandled number of bits per component");
if (false && smask) { if (smask) {
if (maskColorSpace.numComps != 1) //if (maskColorSpace.numComps != 1)
error("Incorrect number of components in smask"); // error("Incorrect number of components in smask");
var numComps = colorSpace.numComps; var numComps = colorSpace.numComps;
var imgArray = image.getBytes(numComps * w * h); var imgArray = image.getBytes(numComps * w * h);