#16 Problems with Lossless JPEG Decompressio

[Anonymous]

There is a problem with the version of the lossless
JPEG decompression used in xmedcon. I have seen a
similar problem with the Papyrus software as well.
Attached is a version of the JPEGLosslessDecodeImage()
function written to work with the jpeg-6b package with
the lossless compression patch applied (
ftp://ftp.uu.net/graphics/jpeg/)

[Nobody/Anonymous]

Replacement for JPEGLosslessDecodeImage()

[Erik Nolf]

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Hello?

To "nobody" submitter: please some more info on:

- what problem? (= test image)
- a small howto perhaps?

To ourselves:
- a patch = not standard jpeg lib: ;-(
- trying patch artwork ourselves
- must offer both (predefs / don't like depencies
on fiddles)
- then how to autodetect jpeg libs with this
lossless patch

[Erik Nolf]

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Follow up #1:

- patch + compile succeeded

- undefined references to ipl_free() & ipl_mallocJPEG
parameter struct

=> ok to use system functions free() and malloc() !?

- linkage warning: libmdc shared <=> static libjpeg.a

- reading leadtools image11.dic = all black

"Application transferred too few scanlines"

[Erik Nolf]

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possible solution:

- using DCMTK jpeg libs (separated 8, 12, 16 bit)

[Erik Nolf]

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to contact, see:

http://isb.ri.ccf.org/biomch-l/archives/biomch-l-2003-01/00025.html