release of pngexif tool

after getting last weekend my PngSuite-EXIF image going, I embarked this 
weekend on another PNG+EXIF project

which is good, because to be accepted by standardization bodies we need 
to show momentum

I created a tool that can extract EXIF profiles from a PNG file 
containing an EXIF chunk

it can also insert a file with a saved EXIF profile into an existing PNG 
file


Usage:
./pngexif                          - read PNG from stdin and write EXIF 
to stdout)
./pngexif <png-infile> <exif-file> - read PNG from infile and write EXIF 
to outfile)
./pngexif -e[xif] <exif-file>      - read PNG from stdin, add EXIF chunk 
and write PNG to stdout)
./pngexif -e[xif] <exif-file> <png-infile> <png-outfile>
                                    - read PNG from infile, add EXIF 
chunk and write to outfile)


the software doesn't rely on any libraries, like zlib or libpng

and yes, John also published another pngexif.c (which isn't a program, 
but a bunch of routines) we both see no conflict here -- and if it does, 
I will rename

the current pngexif program will use the 'temporary' exIf chunk name, 
but of course I will change that after voting on this chunk has happened

you can find sources and a Linux binary at 
http://schaik.com/png/exif/pngexif.tar

I would really appreciate it if you give it a swirl and let me now the bugs

Willem



-- 

Willem van Schaik
<[email protected]>
http://www.schaik.com/


------------------------------------------------------------------------------
Developer Access Program for Intel Xeon Phi Processors
Access to Intel Xeon Phi processor-based developer platforms.
With one year of Intel Parallel Studio XE.
Training and support from Colfax.
Order your platform today. http://sdm.link/xeonphi