SaveSurf: an example on how to save a SDL surface in PNG
Copyright (C) 2006 Angelo "Encelo" Theodorou

Info
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A quick and dirty example on how to save a SDL surface (loaded with SDL_image)
in a PNG image using libpng.
It is *heavy* inspired by this post:
http://www.libsdl.org/pipermail/sdl/2001-May/036068.html, written by Darren
Grant in 2001 and meant to be a SDL_image patch.

Requirements
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- libSDL
- SDL_image
- libpng

Compiling
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$gcc savesurf.c -o savesurf -lSDL -lSDL_image -lpng
or 
$make

Notes
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This program is part of "Mars, Land of No Mercy" SDL examples, you can find
other examples on http://marsnomercy.org/sdl_ex.php.
The savescreen version shows how to make a screenshot of the screen blitting it
first on an output surface, then saving it.