Closed wifiprintguy closed 8 years ago
While the copies of "color.jpeg" in the PWG Raster sample files zip files are still progressive, the file in this project is clean, as tested by ImageMagick's "identify" tool (identify -verbose color.jpg | grep nterlace --> "Interlace: None"
Some printers don't support progressive JPEGs. They will declare their JPEG support via the IPP "jpeg-features-supported" attribute. But the "color.jpeg" sample file is a progressive JPEG, there is no non-progressive JPEG available, and the script doesn't check "jpeg-features-supported" before running its tests.