forked from len0rd/rockbox
Greg's font scripts
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2272 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Daniel Stenberg
parent
05e353acfc
commit
4cd138955d
2 changed files with 236 additions and 0 deletions
197
tools/bdf2c
Executable file
197
tools/bdf2c
Executable file
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#! /usr/bin/perl -w
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#
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# Convert BDF files to incore MWCFONT structure
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# Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
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#
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# from The Microwindows Project (http://microwindows.org)
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#
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# modified on 09/10/02 by G Haerr
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# - fixed DWIDTH 0 parsing
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# - don't limit font size to 0x7e characters
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# - changed offset data to unsigned long for large fonts
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# - don't generate width table if fixed-width
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# - added defaultchar to output
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# - added bits_size member for loadable fonts
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# modified on 3/26/00 by G Haerr added ascent field, fixed $IMAGE_BITS
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# modified on 2/10/00 by K Harris to accept any size input character
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# modified by G Haerr from bdftobogl for 16 bit MWIMAGEBITS
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# originally from BOGL - Ben's Own Graphics Library <pfaffben@debian.org>.
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use POSIX;
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if ($#ARGV < 0) {
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print "Usage: convbdf font.bdf > font.c\n";
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exit -1;
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}
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##$LAST_CHAR = 0x7e;
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$IMAGE_BITS = 16;
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$IMAGE_NIBBLES = $IMAGE_BITS/4;
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$IMAGE_MASK = 0xffff;
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$file = $ARGV[0];
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$font = $file;
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$font =~ s/\.bdf//;
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$font =~ tr/a-zA-Z0-9_/_/cs;
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print "/* Generated by convbdf on ", substr(`date`, 0, -1), ". */\n";
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print "#include \"font.h\"\n\n";
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open BDF, "<$file" || die;
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while (<BDF>) {
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chop;
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$pixel_size = $1 if /^PIXEL_SIZE (\d+)$/;
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$font_ascent = $1 if /^FONT_ASCENT (\d+)$/;
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$font_descent = $1 if /^FONT_DESCENT (\d+)$/;
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$font_name = $1 if /^FONT (.*)$/;
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$default_char = $1 if /^DEFAULT_CHAR (\d+)$/;
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($fbbw, $fbbh, $fbbx, $fbby) = ($1, $2, $3, $4) if /^FONTBOUNDINGBOX (-?\d+) (-?\d+) (-?\d+) (-?\d+)/;
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last if /^CHARS /;
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}
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$font_width = $fbbw - $fbbx;
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undef $fbbw, undef $fbbh, undef $fbbx, undef $fbby;
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print "/* Font information:\n\n";
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print " name: $font_name\n";
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print " pixel size: $pixel_size\n" if defined $pixel_size;
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print " ascent: $font_ascent\n";
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print " descent: $font_descent\n";
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print "*/\n\n";
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print "/* Font character bitmap data. */\n";
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print "static MWIMAGEBITS ${font}_bits[] = {\n";
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$ch_height = $font_ascent + $font_descent;
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$ofs = 0;
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$maxwidth = 0;
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$firstchar = -1;
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$lastchar = -1;
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while (<BDF>) {
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chop;
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undef $encoding, undef $width, undef $bbx, undef $bby, undef $bbw, undef $bbh if /^STARTCHAR /;
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$encoding = $1 if /^ENCODING (\d+)/;
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## last if defined $encoding && $encoding > $LAST_CHAR;
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$width = $1 if /^DWIDTH (-?\d+)/;
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$width = $font_width if defined $width && $width <= 0;
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($bbw, $bbh, $bbx, $bby) = ($1, $2, $3, $4) if /^BBX (-?\d+) (-?\d+) (-?\d+) (-?\d+)/;
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if (/^BITMAP$/) {
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next if !defined $encoding;
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$firstchar = $encoding if $firstchar < 0;
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$lastchar = $encoding if $lastchar < $encoding;
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$encoding_tab[$encoding] = $ofs;
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$width -= $bbx, $bbx = 0 if $bbx < 0;
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$width[$encoding] = $width;
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$maxwidth = $width if $width > $maxwidth;
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$ch_words = int (($width+$IMAGE_BITS-1)/$IMAGE_BITS);
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$ch_bits = $ch_words*$IMAGE_BITS;
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for (my $i = 0; $i < $ch_height; $i++) {
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for (my $k = 0; $k < $ch_words; $k++) {
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$bm[$i][$k] = 0;
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}
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}
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for (my $i = 0; ; $i++) {
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$_ = <BDF>;
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chop;
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last if /^ENDCHAR$/;
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@hexnibbles = split //,$_;
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for (my $k=0; $k<$ch_words; $k++) {
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$ndx = $k*$IMAGE_NIBBLES;
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$padnibbles = @hexnibbles - $ndx;
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last if $padnibbles <= 0; # if bbx pushes bits into next word
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# and no more bits from bdf file
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$padnibbles = 0 if $padnibbles >= $IMAGE_NIBBLES;
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$value = hex join '',@hexnibbles[$ndx..($ndx+$IMAGE_NIBBLES-1-$padnibbles)];
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$value = $value << ($padnibbles*$IMAGE_NIBBLES);
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$bm[$ch_height - $font_descent - $bby - $bbh + $i][$k] |=
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$value >> ($bbx);
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if ($bbx) { # handle overflow into next image_word
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$bm[$ch_height - $font_descent - $bby - $bbh + $i][$k+1] =
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($value << ($IMAGE_BITS - $bbx)) & $IMAGE_MASK;
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}
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}
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}
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### printf "\n/* Character %c (0x%02x):\n", $encoding, $encoding;
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printf "\n/* Character (0x%02x):\n", $encoding;
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print " bbw=$bbw, bbh=$bbh, bbx=$bbx, bby=$bby, width=$width\n";
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print " +", ("-" x $ch_bits), "+\n";
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for (my $i = 0; $i < $ch_height; $i++) {
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print " |";
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for (my $k = 0; $k < $ch_words; $k++) {
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for (my $j = $IMAGE_BITS - 1; $j >= 0; $j--) {
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print $bm[$i][$k] & (1 << $j) ? "*" : " ";
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}
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}
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print "|\n";
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}
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print " +", ("-" x $ch_bits), "+ */\n";
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for (my $i = 0; $i < $ch_height; $i++) {
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for ($k=0; $k<$ch_words; $k++) {
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$ofs++;
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printf "0x%04x, ", $bm[$i][$k];
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}
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printf "\n";
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}
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}
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}
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print "};\n\n";
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##print STDERR "Maximum character width=$maxwidth\n";
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print "/* Character->glyph mapping. */\n";
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print "static unsigned long ${font}_offset[] = {\n";
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for (my $i = $firstchar; $i <= $lastchar; $i++) {
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my $char = $i;
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my $ofs = $encoding_tab[$i];
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$ofs = $encoding_tab[$default_char], $char = $default_char if !defined $ofs;
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### printf " $ofs,\t/* %c (0x%02x) */\n", $char, $i;
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printf " $ofs,\t/* (0x%02x) */\n", $i;
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}
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print "};\n\n";
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$gen_width_table = 0;
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for (my $i = $firstchar; $i <= $lastchar; $i++) {
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my $char = $i;
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my $width = $width[$i];
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$width = $width[$default_char], $char = $default_char if !defined $encoding_tab[$i];
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$gen_width_table = 1 if $width != $maxwidth
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}
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if ($gen_width_table) {
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print "/* Character width data. */\n";
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print "static unsigned char ${font}_width[] = {\n";
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for (my $i = $firstchar; $i <= $lastchar; $i++) {
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my $char = $i;
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my $width = $width[$i];
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$width = $width[$default_char], $char = $default_char if !defined $encoding_tab[$i];
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### printf " $width,\t/* %c (0x%02x) */\n", $char, $i;
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printf " $width,\t/* (0x%02x) */\n", $i;
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}
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print "};\n\n";
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}
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$size = $lastchar - $firstchar + 1;
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print "/* Exported structure definition. */\n";
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print "MWCFONT font_${font} = {\n";
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print " \"$font\",\n";
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print " $maxwidth,\n";
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print " $ch_height,\n";
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print " $font_ascent,\n";
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print " $firstchar,\n";
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print " $size,\n";
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print " ${font}_bits,\n";
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print " ${font}_offset,\n";
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if ($gen_width_table) {
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print " ${font}_width,\n";
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} else { print " 0, /* fixed width*/\n"; }
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print " $default_char,\n";
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print " sizeof(${font}_bits)/sizeof(MWIMAGEBITS),\n";
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print "};\n";
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39
tools/bdf2fnt
Executable file
39
tools/bdf2fnt
Executable file
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@ -0,0 +1,39 @@
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#!/bin/bash
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#
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# bdf2fnt - shell script to convert a BDF file to RBF format
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#
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# usage: bdf2fnt bdffile (don't use .bdf extension!)
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#
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# Example: bdf2fnt courB08
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# creates ./courB08.fnt and /tmp/courB08.c
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# the .fnt file can be renamed /system.fnt for loading
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# the .c file can be moved to firmware dir to compile-in font
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#
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# convert from bdf to C source
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./bdf2c $1.bdf > /tmp/$1.c
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# compile writerbf with linked C source font
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gcc -DFONT=font_$1 -I../firmware -o /tmp/writerbf writerbf.c /tmp/$1.c
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# run writerbf, will write linked incore font to .rbf format
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/tmp/writerbf
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rm /tmp/writerbf
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# load .rbf font and display it for test
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gcc -DMAX_FONT_SIZE=500000 -o /tmp/loadrbf loadrbf.c
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/tmp/loadrbf $1.fnt > /tmp/$1.1
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rm /tmp/loadrbf
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# link .c font and diff with .fnt load for test
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gcc -DFONT=font_$1 -I../firmware -o /tmp/loadrbf loadrbf.c /tmp/$1.c
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/tmp/loadrbf > /tmp/$1.2
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rm /tmp/loadrbf
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#
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# we diff the output to ensure correctness
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diff /tmp/$1.1 /tmp/$1.2
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# clean up
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rm /tmp/$1.1 /tmp/$1.2
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#rm /tmp/$1.c
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