Glenn Randers-Pehrson 3f2b5a6670 libpng16] Updated contrib/pngminus/pnm2png.c (Paul Stewart):
Fixed whitespace handling
Added a call to png_set_packing()
Initialize dimension values so if sscanf fails at least we have known
   invalid values.
2013-05-08 10:09:19 -05:00
..

This demonstrates the use of PNG_USER_CONFIG, pngusr.h and pngusr.dfa
to build minimal decoder, encoder, and progressive reader applications.

See the individual README and pngusr.dfa files for more explanation.