Commit 5935dc9c authored by hartman's avatar hartman
Browse files

We no longer need this.

parent 86bc7bb8
How to create new subtitles fonts
---------------------------------
VLC uses run-length encoded fonts. We already provide 2 of these fonts
(share/font-eutopiabold21.rle and share/font-eutopiabold36.rle) but you might
also want to generate your own.
Two (very basic) perl scripts are provided to generate these fonts files,
vlc-gimp.pl and vlc-font.pl. vlc-gimp.pl is perl-fu, and uses gimp's font
plotting routines to create an image, which should be saved as an RAW PNM.
Installing vlc-gimp.pl with "gimptool --install-bin vlc-gimp.pl" will add a new
entry in the Xtns/Perl-Fu menu in gimp.
vlc-font.pl extracts the characters from the raw PNM, and creates a run-length
encoded font file which VLC can use. As already stated these scripts are quite
basic so you will have to hack them to your liking.
Also note that the subtitler engine in VLC is currently being replaced to use
the freetype library which will allow the use of fonts already available on
your system and some other new powerful features.
\ No newline at end of file
#! /usr/bin/perl
$file_input="font.pnm";
$file_output="eutopiabold36.rle";
$border=-1;
$spaceborder=4;
$|=1;
open(INPUT,$file_input) || die "Couldn't open font: $!\n";
$tag=<INPUT>; chop($tag);
if($tag ne "P6")
{ die "Couldn't process image: not a pnm file ($tag)"; }
$comment=<INPUT>;
$dimensions=<INPUT>; chop($dimensions);
if($dimensions =~ /(\d+) (\d+)/)
{ $width=$1; $height=$2; }
else
{ die "Couldn't process image: couldn't get dimensions"; }
$bits=<INPUT>;
print "width $width height $height\n";
for($j=0; $j<$height; $j++)
{ for($i=0; $i<$width; $i++)
{
$red[$i][$j]=ord(getc(INPUT));
$green[$i][$j]=ord(getc(INPUT));
$blue[$i][$j]=ord(getc(INPUT));
}
print ".";
}
print "\n";
close(INPUT);
open(OUTPUT,">".$file_output) || die "Couldn't open output: $!\n";
# Put header
print OUTPUT pack("C2",0x36,0x05);
# Put font height
print OUTPUT pack("C",$height);
$xstart=0;
# Search for space
$xstart=2;
$x=$xstart; $blank=0;
while($x<$width && !$blank)
{ $blank=1;
for($y=0; $y<$height; $y++)
{ if($blue[$x][$y]!=255)
{ $blank=0; }
}
if(!$blank)
{ $x++; }
}
$xstart=$x;
$x=$xstart; $blank=1;
while($x<$width && $blank)
{ $blank=1;
for($y=0; $y<$height; $y++)
{ if($blue[$x][$y]!=255)
{ $blank=0; }
}
if($blank)
{ $x++; }
}
$xend=$x;
$spacewidth=$xend-$xstart+$spaceborder;
$spacewidth=$spacewidth/2;
if($spacewidth==0)
{ $spacewidth=1; }
print "space start=$xstart end=$xend -> width=$spacewidth\n\n";
# Put space character code
print OUTPUT pack("C",32);
# Put space width
print OUTPUT pack("C",$spacewidth);
# Put space RLE data
for($y=0;$y<$height;$y++)
{ print OUTPUT pack("C",1);
print OUTPUT pack("C",0);
print OUTPUT pack("C",$spacewidth);
}
$char=33;
while($xstart<$width)
{
print "looking for character $char \"".chr($char)."\"\n";
$x=$xstart; $blank=1;
while($x<$width && $blank)
{ $blank=1;
for($y=0; $y<$height; $y++)
{ if($blue[$x][$y]!=255)
{ $blank=0; }
}
if($blank)
{ $x++; }
}
$xstart=$x;
$x=$xstart; $blank=0;
while($x<$width && !$blank)
{ $blank=1;
for($y=0; $y<$height; $y++)
{ if($blue[$x][$y]!=255)
{ $blank=0; }
}
if(!$blank)
{ $x++; }
}
$xend=$x;
print "start=$xstart end=$xend\n";
$dstart=$xstart-$border;
if($dstart < 0)
{ $dstart = 0; }
$dend=$xend+$border;
if($dend > $width)
{ $dend = $width; }
# Put character
print OUTPUT pack("C",$char);
# Put character width
print OUTPUT pack("C",$dend-$dstart);
for($y=0; $y<$height; $y++)
{ $linecode=""; $bytecode=""; $lastcolour=-1; $count=0;
for($x=$dstart; $x<$dend; $x++)
{
# Transparent background
$c=":"; $colour=0;
# Anti-aliased foreground
if($blue[$x][$y]<255 && $red[$x][$y]>0)
{ $c="+"; $colour=1; }
# Solid foreground
if($blue[$x][$y]==255 && $red[$x][$y]==255 )
{ $c="#"; $colour=2; }
# Anti-aliased shadow (same as shadow)
if($blue[$x][$y]<255 && $red[$x][$y]==0)
{ $c="."; $colour=3; }
# Solid shadow
if($blue[$x][$y]==0 && $red[$x][$y]==0)
{ $c=" "; $colour=3; }
print $c;
if($colour != $lastcolour)
{
if($lastcolour!=-1)
{ $linecode.=" $lastcolour,$count";
$bytecode.=pack("C2",$lastcolour,$count);
}
$lastcolour=$colour; $count=1;
}
else
{ $count++; }
}
if($lastcolour!=-1)
{ $linecode.=" $lastcolour,$count";
$bytecode.=pack("C2",$lastcolour,$count);
}
print " [$linecode]\n";
# Put length of RLE line
print OUTPUT pack("C*",length($bytecode)/2);
# Put RLE line
print OUTPUT $bytecode;
}
print "\n";
$xstart=$xend+1;
$char++;
}
print OUTPUT pack("C",255);
print "Done!\n";
close(OUTPUT);
#!/usr/bin/perl
use Gimp ":auto";
use Gimp::Fu;
sub vlc_subtitler_font
{
$shadowcolour=[0,0,0];
$textcolour=[255,255,255];
$backcolour=[0,0,255];
$font="-*-utopia-bold-r-*-*-21-*-*-*-*-*-*-*";
$border=3;
$alias=1;
$text="_ ";
for($i=33; $i<127; $i++)
{ $text.=chr($i); $text.=" "; }
# Create a new image of an arbitrary size with
$img = gimp_image_new(100, 100, RGB);
# Create a new layer for the background of arbitrary size, and
# add it to the image
my $background = gimp_layer_new($img, 100, 100,
RGB, "Background", 100,
NORMAL_MODE);
gimp_image_add_layer($background, 1);
# Choose color of text
gimp_palette_set_foreground($textcolour);
# Create the text layer. Using -1 as the drawable creates a new layer.
my $text_layer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
# Get size of the text drawable and resize the image and the
# background layer to this size.
my($width, $height) = ($text_layer->width, $text_layer->height);
gimp_image_resize($img, $width, $height, 0, 0);
gimp_layer_resize($background, $width, $height, 0, 0);
gimp_layer_delete($text_layer);
# Fill the background layer now when it has the right size.
gimp_palette_set_background($backcolour);
gimp_edit_fill($background, BG_IMAGE_FILL);
my $shadowlayer, $textlayer;
# Plot eight shadow copies of the text
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, -2, 0);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, 2, 0);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, 0, -2);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, 0, 2);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, -1, -1);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, -1, 1);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, 1, -1);
gimp_image_flatten($img);
gimp_palette_set_foreground($shadowcolour);
$shadowlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_layer_translate($shadowlayer, 1, 1);
gimp_image_flatten($img);
# Plot the text itself
gimp_palette_set_foreground($textcolour);
$textlayer = gimp_text_fontname($img, -1, 0, 0, $text,
$border, $alias,
xlfd_size($font), $font);
gimp_image_flatten($img);
return $img;
}
# register the script
register "vlc_subtitler_font",
"vlc subtitler font",
"vlc subtitler font",
"Andrew Flintham",
"Andrew Flintham",
"2002-06-18",
"<Toolbox>/Xtns/Perl-Fu/VLC Subtitles Font",
"*",
[],
\&vlc_subtitler_font;
# Handle over control to gimp
exit main();
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