This plugin allows you to create your own subtitle fonts for mplayer
with gimp. It creates two gimp functions:

  <Toolbox>/Xtns/MPlayer/Render Subfont
  <Image>/Filters/MPlayer/Render Shadow

The first one renders a complete subfont (with a font specified by you)
and saves its 'bitmap' and 'alpha' images and its font.desc to files
specified by you.

The second one renders just the so-called 'alpha' image, which is
actually the black outline displayed around the characters in mplayer
(both images are actually alpha only - only the 'alpha' image is drawn
with black while the 'bitmap' image is drawn with white). This can be
useful if you want to make your own osd/progress subfonts, which can
rarely be rendered from a real font :) It operates on a flattened image
and creates a new image containing the 'alpha' map.

The "Render Subfont" function also puts the unicode mapping for the
selected font's encoding, if the mapping is available - see README.enc
for info on that.

This plugin requires the HSI-Raw plugin, available from

  http://www.ee.oulu.fi/~tuukkat/releases.html

You might run into problems compiling HSI-Raw, I found that changing

  CC   = gcc

to

  CC   = gcc -DGIMP_ENABLE_COMPAT_CRUFT

in the Makefile fixed them.
