9 my $file = shift or die;
11 open my $in_fh, '<', $file or die;
16 die unless $type eq 'SIMcache';
24 printf "Comment: %s\n", $1;
26 elsif (/^Dimensions=\[(\d+) x (\d+)\]$/)
28 printf "Original image dimensions: %dx%d\n", $1, $2;
32 my $unix_time = substr($1, 1, 10);
34 my ($S, $M, $H, $d, $m, $Y) = localtime($unix_time);
37 my $date_time = sprintf("%04d-%02d-%02d %02d:%02d:%02d", $Y, $m, $d, $H, $M, $S);
39 printf "Exif Date Original: %s %s\n", $1, $date_time;
41 elsif (/^Checksum=(.*)/)
43 printf "Checksum (never seen): %s\n", $1;
45 elsif (/^MD5sum=\[(.*)\]$/)
47 printf "MD5 sum: %s\n", $1;
49 elsif ($raw =~ /^SimilarityGrid\[(\d+) x (\d+)\]=(.*)$/s)
51 printf "Similarity image %dx%d\n", $1, $2;
52 if ($1 != 32 or $2 != 32)
54 print "Warning, similarity data are not size 32x32!\n";
57 my $simn = $1 * $2 * 3;
58 my ($width, $height) = ($1, $2);
61 $simdata = substr($simdata, 0, -1) if length($simdata) == $simn + 1; # In case all fits to one line
63 if (length($simdata) < $simn)
65 read $in_fh, $simdata, $simn - length($simdata), length($simdata) or die;
67 read $in_fh, $dummy, 1 or die;
70 printf "Warning, similarity data is not %d bytes", $simn unless length($simdata) == $simn;
72 if (length($simdata) == $simn)
74 my $gd = GD::Image->new($width, $height, 1);
76 for (my $x = 0; $x < $width; $x++)
78 for (my $y = 0; $y < $height; $y++)
80 my $colors = substr($simdata, ($x + $y * $width) * 3, 3);
81 my @rgb = unpack("CCC", $colors);
82 my $index = $gd->colorAllocate(@rgb);
83 $gd->setPixel($x, $y, $index);
85 } ## end for (my $x = 0; $x < $width; $...
88 open my $display_fh, '|-', qw(display -resize), sprintf("%dx%d", $width*10, $height*10), '-' or die;
90 print {$display_fh} $png;
92 } ## end if (length($simdata) == $simn)
93 } ## end elsif (/^SimilarityGrid\[(\d+)...
97 $field = $1 if /^(.*)=/;
99 printf "Unknown Field '$field'\n";
100 } ## end elsif (/^SimilarityGrid\[(\d+)...
101 } ## end while (<$in_fh>)