470 lines
8.9 KiB
Perl
Executable File
470 lines
8.9 KiB
Perl
Executable File
#!/usr/bin/perl
|
|
use GD;
|
|
use strict;
|
|
use warnings;
|
|
use Getopt::Long;
|
|
|
|
$|=1;
|
|
|
|
###
|
|
### Configure me
|
|
###
|
|
|
|
my $charlist;
|
|
for(32..126){
|
|
$charlist.=chr $_;
|
|
};
|
|
|
|
# Runtime Options
|
|
my ($verbose,$raw);
|
|
my $size=17;
|
|
|
|
my $font="../ttf/Ubuntu-Regular.ttf";
|
|
|
|
GetOptions ("size=i" => \$size, # numeric
|
|
"font=s" => \$font, # string
|
|
"verbose" => \$verbose, # flag
|
|
"raw" => \$raw, # flag
|
|
);
|
|
|
|
###
|
|
### Code starts here.
|
|
###
|
|
|
|
my $width=2000;
|
|
my $height=100;
|
|
my $xoff=30;
|
|
|
|
my $origsize;
|
|
my $c1size;
|
|
my $c2size;
|
|
|
|
my $title=getfontname($font);
|
|
die "Couldn't get font name?" if !defined $title;
|
|
|
|
$title.=" ${size}pt";
|
|
|
|
my $fonts=$title;
|
|
$fonts=~s/ //g;
|
|
$fonts=~s/Bitstream//;
|
|
$fonts=~s/Sans//;
|
|
|
|
my $file=$fonts;
|
|
$file=~s/pt$//;
|
|
$file=~y/A-Z/a-z/;
|
|
|
|
$file.="-raw" if($raw);
|
|
|
|
print "Rasterizing $title into ${file}.c\n";
|
|
|
|
### Get & optimize bounding box
|
|
|
|
my $im = new GD::Image($width,$height);
|
|
my $white = $im->colorAllocate(255,255,255);
|
|
my $black = $im->colorAllocate(0,0,0);
|
|
|
|
my @bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$charlist);
|
|
|
|
my ($mx,$my)=($bounds[2],$bounds[3]);
|
|
my ($top,$bottom)=($bounds[7],$my);
|
|
|
|
die "Increase width" if $mx>$width;
|
|
die "Increase height" if $my>$width;
|
|
die "Increase xoff" if $bounds[7]<0;
|
|
|
|
my $found;
|
|
|
|
# Cut whitespace at top
|
|
do {
|
|
$found=0;
|
|
for my $x (0..$mx){
|
|
if( $im->getPixel($x,$top) == 1){
|
|
$found=1;last;
|
|
}
|
|
};
|
|
$top++;
|
|
}while($found==0);
|
|
$top--;
|
|
|
|
# Cut whitespace at bottom.
|
|
do {
|
|
$found=0;
|
|
for my $x (0..$mx){
|
|
if( $im->getPixel($x,$bottom) == 1){
|
|
$found=1;last;
|
|
}
|
|
};
|
|
$bottom--;
|
|
}while($found==0);
|
|
$bottom++;
|
|
|
|
my $pxsize=$bottom-$top+1;
|
|
my $byte=int(($pxsize-1)/8)+1; # Round up
|
|
|
|
print "Removed ",$top-$bounds[7],"px at top\n";
|
|
print "Removed ",$my-$bottom,"px at bottom\n";
|
|
print "Chars are ",$bottom-$top+1,"px ($byte bytes) high\n";
|
|
|
|
#print "x: $bounds[6] - $bounds[2]\n";
|
|
#print "y: $bounds[7] - $bounds[3]\n";
|
|
|
|
open (C,">",$file.".c")||die;
|
|
open (H,">",$file.".h")||die;
|
|
|
|
print C <<EOF
|
|
#include "$file.h"
|
|
|
|
/* Font data for $title */
|
|
|
|
/* Bitmaps */
|
|
const uint8_t ${fonts}Bitmaps[] = {
|
|
EOF
|
|
;
|
|
|
|
my $offset=0;
|
|
my $maxsz=0;
|
|
my @offsets;
|
|
for (1..length$charlist){
|
|
my $char=substr($charlist,$_-1,1);
|
|
|
|
# create a new image
|
|
$im = new GD::Image(2*$height,$height);
|
|
$white = $im->colorAllocate(255,255,255);
|
|
$black = $im->colorAllocate(0,0,0);
|
|
|
|
@bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$char.$charlist);
|
|
|
|
my @char;
|
|
for my $y ($top..$bottom){
|
|
for my $x (0..($bounds[2]-$mx)){
|
|
my $px= $im->getPixel($x,$y);
|
|
$char[$x].=$px;
|
|
# $px=~y/01/ */; print $px;
|
|
};
|
|
# print "<\n";
|
|
};
|
|
print "### Start $char\n" if($verbose);
|
|
|
|
print C " /* Char ",ord $char," is ",scalar@char,"px wide \@ $offset */\n";
|
|
|
|
$maxsz=scalar@char if scalar@char > $maxsz;
|
|
|
|
$origsize+=$byte * scalar @char;
|
|
|
|
# Whoops. Characters are upside down.
|
|
for (@char){
|
|
$_=reverse $_;
|
|
};
|
|
|
|
### PK compression
|
|
my @enc=do_pk(\@char);
|
|
$c2size+=scalar(@enc);
|
|
|
|
### Lame compression
|
|
# "compress" blank spaces
|
|
my $preblank=0;
|
|
while(defined $char[1] && $char[0]=~/^0+$/){
|
|
shift@char;
|
|
$preblank++;
|
|
};
|
|
my $postblank=0;
|
|
while($#char>0 && $char[$#char]=~/^0+$/){
|
|
$#char--;
|
|
$postblank++;
|
|
};
|
|
$c1size+=$byte*scalar@char;
|
|
|
|
my @raw;
|
|
### Raw character data
|
|
for (@char){
|
|
my $h= pack("B*",$_).(chr(0).chr(0));
|
|
for my $b (1..$byte){
|
|
push @raw,ord(substr($h,$b-1,1));
|
|
};
|
|
};
|
|
|
|
# Maintenance overhead
|
|
$origsize+=1;
|
|
$c1size+=3;
|
|
$c2size+=1;
|
|
|
|
# If encoding is bigger, fall back to original char
|
|
if($#enc>$#raw+3){
|
|
warn "Compression failure: Encoding char $char raw.\n";
|
|
$raw=1;
|
|
};
|
|
|
|
# Generate C source
|
|
if($raw){
|
|
@enc=(255,$preblank,$postblank,@raw);
|
|
my @out=@enc;
|
|
printf C " 0x%02x, %2d, %2d, /* rawmode, preblank, postblank */\n",
|
|
(shift@out), (shift@out), (shift@out);
|
|
for (@char){
|
|
print C " ";
|
|
printf C "0x%02x, ",shift@out for(1..$byte);
|
|
$_=~y/01/ */;
|
|
print C " /* $_ */ \n";
|
|
};
|
|
}else{
|
|
for (@char){
|
|
$_=~y/01/ */;
|
|
print C " /* $_ */ \n";
|
|
};
|
|
my $pretty=0;
|
|
for(@enc){
|
|
print C " " if($pretty==0);
|
|
printf C "0x%02x, ",$_;
|
|
if(++$pretty==8){
|
|
print C "\n" ;
|
|
$pretty=0;
|
|
};
|
|
};
|
|
};
|
|
|
|
print C "\n";
|
|
|
|
push @offsets,sprintf " {%2d}, /* %s */\n",scalar(@enc),$char;
|
|
print C "\n";
|
|
|
|
$offset+=scalar(@enc);
|
|
|
|
if($verbose){
|
|
print "-"x80,"\n";
|
|
};
|
|
};
|
|
|
|
|
|
print C <<EOF;
|
|
};
|
|
|
|
/* Character descriptors */
|
|
const FONT_CHAR_INFO ${fonts}Lengths[] = {
|
|
EOF
|
|
|
|
print C @offsets;
|
|
|
|
my($first)=ord substr($charlist,0,1);
|
|
my($last)=$first+length($charlist)-1;
|
|
printf C "};
|
|
|
|
/* Font info */
|
|
const struct FONT_DEF Font_$fonts = {
|
|
%3d, /* width (1 == comressed) */
|
|
%3d, /* character height */
|
|
%3d, /* first char */
|
|
%3d, /* last char */
|
|
%s, %s
|
|
};
|
|
",1,$pxsize,$first,$last,"${fonts}Bitmaps","${fonts}Lengths";
|
|
|
|
print H <<EOF;
|
|
#include "fonts.h"
|
|
|
|
extern const struct FONT_DEF Font_$fonts;
|
|
EOF
|
|
|
|
close(C);
|
|
close(H);
|
|
|
|
print "\ndone.\n\n";
|
|
print "Original size: $origsize\n";
|
|
print "Simple compression: $c1size\n";
|
|
print "PK compression: $c2size\n";
|
|
print "Maximum character size: $byte*$maxsz bytes\n";
|
|
|
|
exit(0);
|
|
|
|
# subs
|
|
|
|
sub pk_dedup {
|
|
my $char=shift;
|
|
my @echar=@{$char};
|
|
|
|
# for (@echar){ print "dedup_in: $_\n"; };
|
|
|
|
my $idx=0;
|
|
while(++$idx<$#echar){
|
|
# dupline code can't deal with all-0 or all-1 dupe lines
|
|
next if ($echar[$idx]=~/^(.)(\1)+$/);
|
|
|
|
if($echar[$idx-1] eq $echar[$idx]){
|
|
my $dl=1;
|
|
$dl++ while ($idx+$dl<$#echar && $echar[$idx] eq $echar[$idx+$dl]);
|
|
|
|
# print "dupline found\n";
|
|
if( $echar[$idx-1]=~ s/01/0[$dl]1/ ){
|
|
$echar[$idx]="";
|
|
@echar[$idx..($idx+$dl-1)]=();
|
|
}elsif ($echar[$idx-1]=~ s/10/1[$dl]0/){
|
|
$echar[$idx]="";
|
|
@echar[$idx..($idx+$dl-1)]=();
|
|
}else{
|
|
die "Shouldn't happen: Can't encode dupline?";
|
|
};
|
|
$idx+=$dl; # Skip deduped lines.
|
|
}
|
|
}
|
|
@echar=grep {defined $_} @echar;
|
|
return \@echar;
|
|
};
|
|
|
|
sub pk_rle {
|
|
my $char=shift;
|
|
|
|
my $line=join("",@$char);;
|
|
|
|
my @out;
|
|
while($line=~/./){
|
|
$line=~s/^(0*)(\[\d+\])?(1*)(\[\d+\])?//;
|
|
push @out,length($1);
|
|
push @out,$2 if defined $2;
|
|
push @out,length($3);
|
|
push @out,$4 if defined $4;
|
|
};
|
|
pop @out if ($out[$#out]==0); # Remove trailling zero
|
|
|
|
# print "rle: ",join(",",@out),"\n";
|
|
return @out;
|
|
};
|
|
|
|
###
|
|
### Encode a "long run", i.e. big number
|
|
###
|
|
sub pk_encode_long {
|
|
my $n=shift;
|
|
my @packed;
|
|
|
|
while($n){
|
|
unshift @packed,$n%16;
|
|
$n=$n>>4;
|
|
};
|
|
|
|
for my $undef (1..$#packed){
|
|
unshift @packed,0;
|
|
};
|
|
|
|
return @packed;
|
|
};
|
|
|
|
###
|
|
### Encode RLE data (with included repeat counts) into a nybble stream
|
|
###
|
|
### PK has "dyn" per-character, but for our font size encoding a dyn per
|
|
### character needs more space than it saves, so it's fixed for now.
|
|
###
|
|
sub pk_encode {
|
|
my @out=@_;
|
|
my $dyn=12;
|
|
my @enc;
|
|
|
|
for (@out){
|
|
if($_ =~ /\[(\d+)\]/ ){
|
|
if($1 == 1){
|
|
push @enc,15;
|
|
}else{
|
|
my $n=$1-1; # this deviates from PK spec, i think.
|
|
push @enc,14,pk_encode_long($1-1);
|
|
};
|
|
}elsif($_ == 0){ # Encoding a 0 will only happen at the start of
|
|
# character if "first pixel" is 1 instead of 0.
|
|
# HACK: We transmit this fact to the decoder
|
|
# by encoding a "14"-nibble which would be
|
|
# illegal at this point anyway.
|
|
push @enc,14;
|
|
}elsif($_ <= $dyn){ # Short length
|
|
push @enc,$_;
|
|
}elsif($_ <= 16*(13-$dyn)+$dyn){ # Medium length
|
|
my $b=($_-$dyn-1)&0x0f;
|
|
my $a=(($_-$dyn-1)>>4)+$dyn+1;
|
|
push @enc,$a,$b; # (16*($a-$dyn-1)+$b+$dyn+1
|
|
}else{ # long length
|
|
my $n=$_- (16*(13-$dyn)+$dyn) + 16;
|
|
push @enc,pk_encode_long($n);
|
|
};
|
|
};
|
|
# print "enc: ",join(",",@enc),"\n";
|
|
return @enc;
|
|
};
|
|
|
|
sub make_bytes{
|
|
my @enc=@_;
|
|
my @out;
|
|
|
|
while(@enc){
|
|
push @enc,0 if($#enc==2);
|
|
push @out,16*(shift@enc)+(shift@enc);
|
|
};
|
|
return @out;
|
|
};
|
|
|
|
sub do_pk {
|
|
my $char=shift;
|
|
my $size=scalar @$char * $byte;
|
|
print "Input char is $size bytes\n" if $verbose;
|
|
|
|
$char=pk_dedup($char);
|
|
|
|
if($verbose){
|
|
for (@$char){
|
|
print "dedup: $_\n";
|
|
};
|
|
};
|
|
|
|
my @rle=pk_rle ($char);
|
|
|
|
if($verbose){
|
|
print "RLE: ",join(",",@rle),"\n";
|
|
};
|
|
|
|
my @enc=pk_encode (@rle);
|
|
|
|
if($verbose){
|
|
print "encoded stream: ",join(",",@enc),"\n";
|
|
};
|
|
|
|
return make_bytes(@enc);
|
|
};
|
|
|
|
sub getfontname {
|
|
my $file = shift;
|
|
use constant SEEK_SET => 0;
|
|
use Encode qw(decode);
|
|
|
|
open (my $fh,"<",$file) || die "Can't open $font: $!";
|
|
|
|
my($buf,$str);
|
|
|
|
sysread($fh,$buf,12); # OFFSET_TABLE
|
|
my($maj,$min,$num,undef,undef,undef)=unpack("nnnnnn",$buf);
|
|
|
|
die "It's not a truetype font!" if ($maj != 1 || $min != 0);
|
|
|
|
for(1..$num){
|
|
sysread($fh,$buf,16); # TABLE_DIRECTORY
|
|
my($name,undef,$off1,$len)=unpack("A4NNN",$buf);
|
|
if ($name eq "name"){
|
|
seek($fh,$off1,SEEK_SET);
|
|
sysread($fh,$buf,6);
|
|
my(undef,$cnt,$off2)=unpack("nnn",$buf);
|
|
sysread($fh,$buf,12*$cnt);
|
|
while(length($buf)){
|
|
my(undef,$enc,undef,$id,$len,$off3)=unpack("nnnnnn",$buf);
|
|
substr($buf,0,12)="";
|
|
seek($fh,$off1+$off2+$off3,SEEK_SET);
|
|
sysread($fh,$str,$len);
|
|
if($enc==1){
|
|
$str=decode("UCS-2",$str);
|
|
};
|
|
# 0: Copyright, 1: Name, ...
|
|
if ($id == 4){
|
|
return $str;
|
|
};
|
|
# print "- $str\n";
|
|
};
|
|
last;
|
|
};
|
|
};
|
|
return undef;
|
|
};
|