anyway, added an additional proofing check to vorbisfile to aid a
developer figuring out what he's doing wrong.
svn path=/trunk/vorbis/; revision=13210
/* we can seek, so set out learning all about this file */
(vf->callbacks.seek_func)(vf->datasource,0,SEEK_END);
vf->offset=vf->end=(vf->callbacks.tell_func)(vf->datasource);
-
+
+ /* If seek_func is implemented, tell_func must also be implemented */
+ if(vf->end==-1) return(OV_EINVAL);
+
/* We get the offset for the last page of the physical bitstream.
Most OggVorbis files will contain a single logical bitstream */
end=_get_prev_page(vf,&og);