Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Alan I thought the responsibility of libjpeg was to encode and decode jpegs. And I thought "decode" meant "give me pixels I can push to my screen", not "make me parse the file myself to find metadata chunks". Here's my growing list of programs in Debian that choke on YCCK jpegs, Well, th

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Bob Friesenhahn wrote: You need to learn about how to do this other than via this private discussion. It seems to be handled by storing a JPEG chunk with the computed ID JPEG_APP0+2. Yes, this falls under the category which I call "color management system". This is an extensive topic and it

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Alan xli is not going to have any information about the image except what it gets from libjpeg. What should it display when libjpeg gives it CMYK output? If I take the conversion formula from this proposed patch and put it into xli instead, I'll have something satisfactory for the immediate

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Tom Just for the record, JFIF was not invented by IJG, and I don't believe that you get to redefine it. The original spec is perfectly clear that there is exactly one color space allowed in JFIF files. (Well, two if you count greyscale.) Oh, maybe my words were capable of being misunder

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Bill Here you can see a correct rendering of the image (re-encoded in JFIF): http://www.zeit.de/lebensart/mode/2012-08/fs-zeitlos-schoen-2/seite-9 Regards Guido -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listm

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Bill Here is the example: http://www.berlininart.com/timeless-beauty-at-co-berlin/ (Teen Vogue - preview above, full image below - this falls under art...) http://www.berlininart.com/wp-content/uploads/2012/08/1330_Kim.jpg You can download and open the full image with Jpegcrop and se

Bug#718604: [rlw...@sdf.org: Bug#718604: libjpeg-progs: djpeg broken for some jpegs]

2013-08-03 Thread Guido Vollbeding
Dear Bill I received the following bug report, and I very much appreciated your opinion about it. I'm very thankful that this subject is brought up now, because there have been clarifications in the color support department in recent IJG JPEG development, and I

Bug#675212: cjpeg maxmemory

2012-05-31 Thread Guido Vollbeding
$ cjpeg -progressive -arithmetic -rgb -block 1 -outfile huge1.jpg -quality 100 huge.ppm Just noticed another point: The "-quality 100" here. This adds to the size of the compressed file but with no benefit here. The default quality setting (75) is already lossless for block size 1 (due to DCT

Bug#675212: cjpeg maxmemory

2012-05-31 Thread Guido Vollbeding
Hello Bill, Mathieu The maxmemory and JPEGMEM settings can only work when libjpeg has an alternative to use temporary files instead of RAM. But on modern systems libjpeg is usually installed with the "jmemnobs.c" (no backing store) memory module, and then these settings are not regarded, because

Bug#612341: bumblebee, libjpeg-turbo: Wheezy does not work well with modern notebook PCs.

2012-05-30 Thread Guido Vollbeding
NTERFACE, but WITHOUT actually IMPLEMENTING it! Anyone who does or accepts such action cannot be taken seriously, sorry, and I will certainly recommend anyone to stay away from organizations or companies which do or accept such practice. Regards Guido Vollbeding Organizer Independent JPEG Group

Bug#612341: bumblebee, libjpeg-turbo: Wheezy does not work well with modern notebook PCs.

2012-05-30 Thread Guido Vollbeding
uch companies like Google, Red Hat, Ubuntu, and others, as can be seen on http://www.libjpeg-turbo.org/About/Software), but the organizations and companies that I am working with may see this different one day. Regards Guido Vollbeding Organizer Independent JPEG Group -- To UNSUBSCRIBE, email

Bug#612341: bumblebee, libjpeg-turbo: Wheezy does not work well with modern notebook PCs.

2012-05-29 Thread Guido Vollbeding
REMOVING ones. We are now on the way to release 9, and T.81/10918-1 is far left behind already, for those who care. Regards Guido Vollbeding Organizer Independent JPEG Group -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org