Remove the following arguments as redundant: in_channels, in_format,
out_minsize, out_maxsize. The first two always equal fields of the
sh_audio_t struct given as the first argument to the function. The
last two are unused after the allocation of sh_audio->a_out_buffer
was changed to be done on demand.
After the out_minsize and out_maxsize arguments are removed the
function preinit_audio_filters() is identical to init_audio_filters(),
so remove it and use the latter instead.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@24922 b3059339-0415-0410-9bf9-f77b7e298cf2