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Adds cmyk jpg support. Treats the cmyk jpg as a regular stream.

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Brendan Dahl 2011-11-08 08:48:10 -08:00
parent 234ec25351
commit 9bb2b881b0
8 changed files with 47 additions and 18 deletions
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44
src/stream.js
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@ -793,20 +793,46 @@ var JpegStream = (function jpegStream() {
// TODO: per poppler, some images may have 'junk' before that
// need to be removed
this.dict = dict;
this.isNative = true;
if (isAdobeImage(bytes))
bytes = fixAdobeImage(bytes);
if (isAdobeImage(bytes)) {
// when bug 674619 land, let's check if browser can do
// normal cmyk and then we won't have to the following
var cs = dict.get('ColorSpace');
if (isName(cs) && cs.name === 'DeviceCMYK') {
this.isNative = false;
this.bytes = bytes;
} else {
bytes = fixAdobeImage(bytes);
this.src = bytesToString(bytes);
}
} else {
this.src = bytesToString(bytes);
}
this.src = bytesToString(bytes);
DecodeStream.call(this);
}
constructor.prototype = {
getIR: function jpegStreamGetIR() {
return this.src;
},
getChar: function jpegStreamGetChar() {
constructor.prototype = Object.create(DecodeStream.prototype);
constructor.prototype.ensureBuffer = function jpegStreamEnsureBuffer(req) {
if (this.bufferLength)
return;
var jpegImage = new JpegImage();
jpegImage.parse(this.bytes);
var width = jpegImage.width;
var height = jpegImage.height;
var dataLength = width * height * 4;
var data = new Uint8Array(dataLength);
jpegImage.getData(data, width, height);
this.buffer = data;
this.bufferLength = data.length;
};
constructor.prototype.getIR = function jpegStreamGetIR() {
return this.src;
};
constructor.prototype.getChar = function jpegStreamGetChar() {
error('internal error: getChar is not valid on JpegStream');
}
};
return constructor;