[PDFBOX-820] Support TIFF predictor 2 with FlateDecode, patch included

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.3.1
• Fix Version/s: 1.3.1
• Component/s: Parsing
• Assignee: Unassigned
• Reporter: Timo Boehme
• Created: 07/Sep/10 12:17
• Updated: 07/Sep/15 16:44
• Resolved: 05/Sep/15 11:16

Description

A patch which adds support for TIFF predictor 2 within FlateDecode. Currently the patch only supports 8 bits per component. Handling 4 bits per component could be implemented but I have no test document.
The patch can be tested against http://pediatrics.aappublications.org/cgi/reprint/125/1/1
the title graphic (Im0 at page 1) uses predictor type 2.

Issue Links

• is related to: PDFBOX-2549 TIFF-Predictor with 16 bits per component not supported
• is related to: PDFBOX-2958 TIFF-Predictor with 1 bit per component not supported
• is related to: PDFBOX-2962 Handle TIFF predictor for bpc 2 and 4 / optimize existing predictor code