search

istopwg / ippeveselfcert

IPP Everywhere Printer Self-Certification Tools
https://www.pwg.org/ipp/everywhere.html
Apache License 2.0
21 stars 6 forks source link

ipp-tests.sh: color.jpeg should be non-progressive since "jpeg-features-supported" isn't considered #4

Closed wifiprintguy closed 8 years ago

wifiprintguy commented 8 years ago

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.

wifiprintguy commented 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"