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#!/bin/ash
screen_size="$(fbset | awk '$1 ~ /geometry/ {print $2" "$3}')"
screen_width="${screen_size%% *}"
screen_height="${screen_size#* }"
fbsplash_cfg="/etc/fbsplash.cfg"
fbsplash_ppm="/etc/splash.ppm.gz"
if [ -s "$fbsplash_ppm" ]; then
ppm_size="$(zcat "$fbsplash_ppm" | sed -n 2p)"
else
fbsplash_ppm="/etc/splash.ppm"
if [ -s "$fbsplash_ppm" ]; then
ppm_size="$(sed -n 2p "$fbsplash_ppm")"
else
echo "Splash screen requested, but not found in initramfs..." >&4
MUTED_OUTPUT=
fi
fi
ppm_width="${ppm_size%% *}"
ppm_height="${ppm_size#* }"
ppm_height="${ppm_height%% *}" # make sure nothing weird is trailing
img_left="$(( ( screen_width - ppm_width ) / 2 ))"
img_top="$(( ( screen_height - ppm_height ) / 2 ))"
# just checking if nothing too weird is set
if [ -n "$img_left" ] && [ -n "$img_top" ] \
&& [ "$img_left" -ge 0 ] && [ "$img_left" -lt 8096 ] \
&& [ "$img_top" -ge 0 ] && [ "$img_top" -lt 8096 ]; then
printf "IMG_TOP=%d\nIMG_LEFT=%d\n" \
"$img_top" "$img_left" \
> "$fbsplash_cfg"
fbsplash -b -i "$fbsplash_cfg" -s "$fbsplash_ppm" || MUTED_OUTPUT=
else
# otherwise just use top left and be done with it
fbsplash -b -s "$fbsplash_ppm" || MUTED_OUTPUT=
fi
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