I did (sort of) integrate the CCITT/TIFF compression based on JAI earlier this year. See http://marc.theaimsgroup.com/?l=fop-dev&m=101125782918974&w=2
But nobody seemed to be interested at the time. Manuel -----Original Message----- From: Stephen Wolke [mailto:[EMAIL PROTECTED]] Sent: Tuesday, 13 August 2002 10:41 To: [EMAIL PROTECTED] Subject: Encoding Filters(Formally Re: Hope this helps- RunLengthEncodeFilter) Jeremias I would love to have some fun, but is this your idea of fun?? ;-) I will take you up on the offer, report back and tell you whether it was found to be fun or not. Also, I had looked into the CCITT filter briefly and noticed at that time the JAI API has this and many other encoding filters in it. When trying to see how much work it would have been to integrate the JAI into the FOP I noticed the FopImageFactory has some commented out code that would lead me to believe I was not the only one to consider the route of having the JAI handle the images. Now to my question. Was this just a passing thought or is this the direction being forged or does anybody know? I am just curious. Lastly, to clear my foggy head, my understanding is that the CCITT encoding is fax encoding is intended for encoding in black and white only and is some how related to the Tag Image File Format (TIFF). Is that a correct understanding? Thanks, Stephen Wolke -----Original Message----- From: Jeremias Maerki [mailto:[EMAIL PROTECTED]] Sent: Monday, August 12, 2002 1:19 PM To: [EMAIL PROTECTED] Subject: Re: Hope this helps- RunLengthEncodeFilter Hi Stephen I've committed the filter to both maintenance and main branches. Your code seems to work well, but obviously doesn't bring much for color images because they are currently encoded as a mixed data source (RGBRGBRGBRG, for example). To profit more from RLE compression we would have to encode 3 (or 4 for CMYK) separate channels which required some more work (would result in RRRGGGBBB). But at least for greyscale images (when only working with PS Level 2) the RLE filter should produce considerably smaller files. Would you like to have some more fun implementing a CCITT filter? :-) The PDF renderer could profit from this, too, I guess. Thanks, anyway! Jeremias Maerki --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
