Since setting the maximum number of threads to use to 1 causes sporadically
files missing add a simple alternative implementation that doesn't use futures.
This is a stop-gap solution to fix voice files not creating (reported on
Windows with SAPI voices, see FS#11994). Encoding doesn't seem to be affected
by the problem and is unchanged.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29762 a1c6a512-1295-4272-9138-f99709370657
- introduce a talkgenerator to better share code between voice and talk generation.
- name intermediate .talkfiles after the md5sum of the text. (prevents naming problems).
- do not directly use the logger, instead emit signals.
- move talkfile and voicefile generation to base/
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21524 a1c6a512-1295-4272-9138-f99709370657
