Generate mosaic from testcards

mosaicbg.sh

#!/bin/bash

WIDTH=1280
HEIGHT=720

if [ $# -eq 0 ]; then
	echo "Testcard mosaic generator: generate 1 to 9 mosaic labeled testscreens"
	echo -e "\tUses read, sed, wget and ImageMagick (convert and montage)"
	echo -e "\tIt also uses Terence Eden's Testcard <https://github.com/edent/SVGtestcard>"
	echo -e "\tUsage: $0 <name>[,subtitle>] [name[,subtitle]..]"
	exit 1
fi

read --help 2>&1 > /dev/null
if [ $? -ne 2 ]; then
	echo "cannot find 'read'"
	exit 2
fi

if ! which sed 2>&1 > /dev/null; then
	echo "cannot find 'sed'"
	exit 3
fi

if ! which convert 2>&1 > /dev/null; then
	echo "cannot find 'convert' (install ImageMagick)"
	exit 4
fi

if ! which montage 2>&1 > /dev/null; then
	echo "cannot find 'montage' (install ImageMagick)"
	exit 4
fi

if [ ! -f "PM5644.svg" ]; then
	if ! which wget 2>&1 > /dev/null
	then
	echo "cannot find 'wget'"
	exit 5
	fi

	wget "https://raw.githubusercontent.com/edent/SVGtestcard/master/PM5644.svg"
fi

#TODO: placeholder.svg/png
if [ ! -f "bg.png" ]; then
	echo "Generating placeholder.."
	convert -size ${WIDTH}x${HEIGHT}  plasma:fractal bg.png
fi

echo -n "Generating $# tile(s).."
TILES=0
while [[ $# -gt 0 ]]
do
	IFS=',' read -ra TEXT <<< "$1"
	echo -n "$TILES.."

	if [ -z "${TEXT[1]}" ]
	then
		cat PM5644.svg|sed -e"s/width=\"[^\"]*\" height=\"[^\"]*\" viewBox/width=\"${WIDTH}px\" height=\"${HEIGHT}px\" viewBox/g" -|sed -e"s/LDO TV/${TEXT[0]}/g" -|convert -size ${WIDTH}x${HEIGHT} - CH${TILES}.png
	else
		cat PM5644.svg|sed -e"s/width=\"[^\"]*\" height=\"[^\"]*\" viewBox/width=\"${WIDTH}px\" height=\"${HEIGHT}px\" viewBox/g" -|sed -e"s/LDO TV/${TEXT[0]}/g" -|sed -e"s/\(<\!--\|-->\)//g" -|sed -e"s/DIGITAL/${TEXT[1]}/g" -|convert -size ${WIDTH}x${HEIGHT} - CH${TILES}.png
	fi
	shift
	let TILES+=1
done
echo "done"

#-background '#336699'
echo "Tile montage.."
case $TILES in
	1) mv CH0.png mosaicbg.png;;
	2) montage bg.png CH0.png CH1.png bg.png -tile 2x2 -geometry +0+0 -resize 50% mosaicbg.png;;
	3) montage bg.png CH0.png CH1.png CH2.png -tile 2x2 -geometry +0+0 -resize 50% mosaicbg.png;;
	4) montage CH0.png CH1.png CH2.png CH3.png -tile 2x2 -geometry +0+0 -resize 50% mosaicbg.png;;

	5) montage CH0.png bg.png CH1.png bg.png CH2.png bg.png CH3.png bg.png CH4.png -tile 3x3 -geometry +0+0 -resize 33.33% mosaicbg.png;;
	6) montage CH0.png CH1.png CH2.png bg.png bg.png bg.png CH3.png CH4.png CH5.png -tile 3x3 -geometry +0+0 -resize 33.33% mosaicbg.png;;
	7) montage CH0.png CH1.png CH2.png bg.png CH3.png bg.png CH4.png CH5.png CH6.png -tile 3x3 -geometry +0+0 -resize 33.33% mosaicbg.png;;
	8) montage CH0.png CH1.png CH2.png CH3.png bg.png CH4.png CH5.png CH6.png CH7.png -tile 3x3 -geometry +0+0 -resize 33.33% mosaicbg.png;;
	9) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png CH6.png CH7.png CH8.png -tile 3x3 -geometry +0+0 -resize 33.33% mosaicbg.png;;

	10) montage CH0.png CH1.png CH2.png CH3.png CH4.png bg.png bg.png bg.png bg.png bg.png bg.png CH5.png CH6.png CH7.png CH8.png CH9.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	11) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png bg.png bg.png bg.png bg.png bg.png CH6.png CH7.png CH8.png CH9.png CH10.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	12) montage CH0.png CH1.png CH2.png CH3.png CH4.png bg.png bg.png CH5.png CH6.png bg.png bg.png CH7.png CH8.png CH9.png CH10.png CH11.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	13) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png bg.png CH6.png CH7.png bg.png bg.png CH8.png CH9.png CH10.png CH11.png CH12.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	14) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png bg.png CH6.png CH7.png bg.png CH8.png CH9.png CH10.png CH11.png CH12.png CH13.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	15) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png CH6.png CH7.png bg.png CH8.png CH9.png CH10.png CH11.png CH12.png CH13.png CH14.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	16) montage CH0.png CH1.png CH2.png CH3.png CH4.png CH5.png CH6.png CH7.png CH8.png CH9.png CH10.png CH11.png CH12.png CH13.png CH14.png CH15.png -tile 4x4 -geometry +0+0 -resize 25% mosaicbg.png;;
	*)
		echo "Too much tiles"
		;;
esac