sourcecode shotgunefx <code> #!/usr/bin/perl =head1 NAME pnt2bmp - Converts "Tandy Personal Deskmate P(ai)NT files" to BMP =head1 SYNOPSIS B<pnt2bmp.pl> I<file.pnt> =head1 DESCRIPTION Converts "Tandy 1000 Personal Deskmate P(ai)NT files" to BMP. AFAIK, they are always 312x176. Did this without docs, so may not work on all. Pixel data is stored in byte pairs, the first byte, two 4-bit pixels, and the second, a repeat count of the two pixel values http://www.leeland.net/pnt2bmp.html =head1 AUTHOR Lee Pumphret =cut use strict; use warnings; my @tga_palette = map { pack( "CCC", reverse @$_ ) } ( [ 0x00, 0x00, 0x00 ], # Black [ 0x00, 0x00, 0x99 ], # Dark Blue [ 0x00, 0x99, 0x00 ], # Dark Green [ 0x33, 0x99, 0x99 ], # Dark Cyan [ 0x99, 0x00, 0x00 ], # Dark Red [ 0xCC, 0x33, 0xCC ], # Dark Magenta [ 0xCC, 0x66, 0x00 ], # Orange [ 0x99, 0x99, 0x99 ], # Light Gray [ 0x99, 0x66, 0x33 ], # Dark Gray [ 0x66, 0x33, 0xFF ], # Light Blue [ 0x33, 0xCC, 0x00 ], # Light Green [ 0x66, 0xCC, 0xCC ], # Light Cyan [ 0xFF, 0xCC, 0xCC ], # Light Red [ 0xFF, 0x99, 0xFF ], # Light Magenta [ 0xFF, 0xFF, 0x00 ], # Yellow [ 0xFF, 0xFF, 0xFF ], #White ); my @files = glob( shift @ARGV ); foreach my $file (@files) { next and warn "Mismatched extension in filename [$file]... skipping\n" unless $file =~ /\.pnt$/i; print "processing $file...\n"; open( IN, "<$file" ) or die "Couldn't open $file :$!"; binmode(IN); my @imdata; my $buffer; my $PNT_HEADER_SIZE = 22; # .pnt file header size (I think) # Read the header ( read( IN, $buffer, $PNT_HEADER_SIZE ) == $PNT_HEADER_SIZE ) or die "Error reading header data!"; warn unpack( "h*", $buffer ) . " $file\n"; my ( $ident, $other ) = unpack( "A4", $buffer ); unless ( $ident =~ m/PNT$/ ) { die "Doesn't look like an PNT file! [$ident]"; } my $count; while ( read( IN, $buffer, 2 ) ) { my ( $pindex, $run ) = unpack( "CC", $buffer ); my $p1 = ( $pindex >> 4 ) & 0x0f; my $p2 = $pindex & 0x0f; push @imdata, ( ( $tga_palette[$p1], $tga_palette[$p2] ) x ($run) ); } my $width = 312; unless ( @imdata % $width == 0 ) { # If short, pad it out, but probably damaged. warn "Padding $file, may be damaged\n"; push @imdata, ( $tga_palette[0] ) x ( $width - ( @imdata % $width ) ); } my ( $x, $y ) = ( $width, @imdata / $width ); # Write out the bmp file ( my $outfile = $file ) =~ s/pnt$/bmp/i; my $written = $#imdata; open( OUT, ">$outfile" ) or die "Couldn't open output!"; binmode(OUT); # BMP 3.1 Header print OUT pack "C C l a a a a l l l l s s l l l l l l", 0x42, 0x4D, 54 + ( $x * 3 ) * $y, 'l', 'e', 'e', 'p', 54, 0x28, $x, $y, 1, 24, 0, 0, 0, 0, 0, 0; # Write out the image data, bottom to top while ( $written > 0 ) { print OUT @imdata[ $written - ( $x - 1 ) .. $written ]; $written -= $x; } close OUT; } </code> Found some of my old drawings I did on my Tandy 1000 using Tandy Deskmate circa 1989, nothing existed to view them or convert them. I was able to figure out the format (for my version of Deskmate anyway), this will generate a BMP from the PNT file. Utility Scripts