Converts Maxim analog video overlay (for example, Betaflight and iNAV OSD) fonts to desired image format.

The Maxim format is documented here: https://www.maximintegrated.com/en/design/technical-documents/app-notes/4/4117.html

Useful for: previewing fonts, converting fonts for use in other applications, etc.

python3 mcm2img.py mcmfile.mcm font.bin [rawfmt] [R] [G] [B]

Example:

python3 mcm2img.py betaflight.mcm font.bin RGBA 0 255 0` for green font colour

mcmfile.mcm file can found in the Configurator for your flight controller of choice.

For Betaflight, this is at betaflight-configurator*\resources\osd\1

If rawfmt is specified, it's one of the (many) raw bitmap formats supported by Pillow: https://github.com/python-pillow/Pillow/blob/main/src/libImaging/Unpack.c#L1483 . RGBA is probably the most common thing you will want here.

The docker container will automatically convert all .mcm fonts found in /app/fonts with mcm2img.py

To build the docker image locally please use the following command:

docker build . -t mcm2img:latest

Copy the font files (.mcm only) somewhere and execute the following command:

docker run -v ${PWD}/fonts:/app/fonts -it mcm2img:latest