#!/usr/bin/perl
use 5.014;
my ($file, $size) = @ARGV;

my @info = eval {
	require Image::ExifTool;
	my $exif = Image::ExifTool->new->ImageInfo($file);
	return (
		" $exif->{MIMEType}",
		$exif->{ImageSize} ? " $exif->{ImageSize} ($exif->{Megapixels}MP)" : (),
		$exif->{ColorType} ? " $exif->{BitDepth}bpp $exif->{ColorType}" : (),
	);
} or warn $@;

open my $pgm, '-|', convert => (
	-compress => 'none',
	'+distort' => SRT => '0,0 1,.56 0',
	-thumbnail => $size || '66x23',
	$file => 'pgm:-'
) or die $!;
<$pgm> eq "P2\n" or do {
	say for @info;
	exit 1;
};
<$pgm>; <$pgm>;  # ignore depth, dimensions

my @ch = split //, " .:coO@";
while (<$pgm>) {
	print $ch[ $_ * @ch >> 8 ] for /\d+/g;
	print $info[$. - 4], $/;
}