#!/bin/sh

# [size=WxH] ./convert.sh <file> -r <frame rate> [additional ffmpeg args]

set -eu

mkdir -p tmp

ffmpeg -i "$@" tmp/frame%4d.png

parallel mogrify -resize "${size:-128x32}" -threshold 50% -- tmp/*.png

echo "#include <avr/pgmspace.h>" > frames.cc
echo "const unsigned char frame_rate = $3;" >> frames.cc
./frames-to-cc tmp/*.png >> frames.cc

rm -rf tmp