[PDFBOX-3433] Optimize image conversion in LosslessFactory

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 2.0.2, 2.0.3, 3.0.0 PDFBox
• Fix Version/s: 2.0.3, 3.0.0 PDFBox
• Component/s: PDModel
• Labels: optimization performance
• Environment: Ubuntu 14.04.4 LTS
• Assignee: Tilman Hausherr
• Reporter: Michael Doswald
• Created: 21/Jul/16 14:22
• Updated: 25/Mar/17 18:13
• Resolved: 21/Jul/16 16:25

Description

Conversion of BufferedImage objects into PDImageXObject objects could be optimized by

• Pre-sizing the buffers
• Reading whole lines of pixels instead of pixel-by-pixel
• Prevent unnecessary copying of byte arrays