This is an alternative to LodePNG take from http://forge.voodooprojects.org/
which is base on picoPNG C++ wrote by Lode Vandevenne. The same author as
LodePNG.
PicoPNG only support RGBA PNG8
The source code of picopng.c was just adapted to be compliant with C89 and drop
the internal ZLIB support. Coding style untouched.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>