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Add ability to fast track natively supported jpegs.

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This commit is contained in:
Brendan Dahl 2011-12-08 21:18:04 -08:00
parent d1c823efce
commit 7d1cddf371
5 changed files with 59 additions and 23 deletions
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35
src/evaluator.js
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@ -208,26 +208,31 @@ var PartialEvaluator = (function partialEvaluator() {
// of image processing can be done here.
var objId = 'img_' + uniquePrefix + (++self.objIdCounter);
insertDependency([objId]);
fn = 'paintImageXObject';
args = [objId, w, h];
var resolve = (function(objId) {
return function resolve(data) {
handler.send('obj', [objId, 'Image', data]);
};
})(objId);
var softMask = dict.get('SMask', 'IM') || false;
if (!softMask && image instanceof JpegStream && image.isNative) {
// These JPEGs don't need any more processing so we can just send it.
fn = 'paintJpegXObject';
handler.send('obj', [objId, 'JpegStream', image.getIR()]);
return;
}
fn = 'paintImageXObject';
var imageObj = new PDFImage(xref, resources, image, inline, handler);
imageObj.ready(function() {
var imgData = {
width: w,
height: h,
data: new Uint8Array(w * h * 4)
imageObj.ready((function() {
return function(data) {
var imgData = {
width: w,
height: h,
data: new Uint8Array(w * h * 4)
};
var pixels = imgData.data;
imageObj.fillRgbaBuffer(pixels, imageObj.decode);
handler.send('obj', [objId, 'Image', imgData]);
};
var pixels = imgData.data;
imageObj.fillRgbaBuffer(pixels, imageObj.decode);
resolve(imgData);
});
})(objId));
}
uniquePrefix = uniquePrefix || '';