GBImg is a command-line tool that allow you to convert BMP and PNG images into the Gamebuino flash memory format.
It can also handle animated images and spritesheets
It currently support only uint8_t[] flash images in the indexed mode
Usage: GBImg [OPTION...]-o, --output-path arg File name of the export (default: code.hpp)
-i, --image-input arg Image path to convert
-c, --code-name arg identifier in the exported code (default:
image)
--transparency [=N(=0)] Choosen color index used for transparency.
Value greater than 15 (0x0F) will make the
program not handle transparency (default: 255)
--palette default / edge16
Choosen color palette used for finding
correct indexes (default: default)
--palette-file arg File from which the color palette will be
used (override palette option)
-h, --help Print the helpSpritesheet options:
-s, --spritesheet Activate the spritesheets mode
--tile-x N Number of tiles on X axis Sub width will be deduced
with image-width / tile-x (default: 0)
--tile-y N Number of tiles on Y axis | Sub height will be deduced
with image-height / tile-y (default: 0)
--framerate N Framerate of the animation | number of frame per
animation (default: 0)
The download link provide a compiled version for Windows 7 and some test / example in bat files