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Adds support for two components images #14

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merged 1 commit into from Oct 24, 2012
Merged

Adds support for two components images #14

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17 changes: 16 additions & 1 deletion jpg.js
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Expand Up @@ -764,6 +764,21 @@ var JpegImage = (function jpegImage() {
}
}
break;
case 2:
// PDF might compress two component data in custom colorspace
component1 = this.components[0];
component2 = this.components[1];
for (y = 0; y < height; y++) {
component1Line = component1.lines[0 | (y * component1.scaleY * scaleY)];
component2Line = component1.lines[0 | (y * component2.scaleY * scaleY)];
for (x = 0; x < width; x++) {
Y = component1Line[0 | (x * component1.scaleX * scaleX)];
data[offset++] = Y;
Y = component2Line[0 | (x * component2.scaleX * scaleX)];
data[offset++] = Y;
}
}
break;
case 3:
// The default transform for three components is true
colorTransform = true;
Expand Down Expand Up @@ -908,4 +923,4 @@ var JpegImage = (function jpegImage() {
};

return constructor;
})();
})();