subs: Change global subtitle numbering scheme

subs: Change global subtitle numbering scheme

Change numbering so that demuxers can "asynchronously" add subtitles
during playback.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31678 b3059339-0415-0410-9bf9-f77b7e298cf2

Fix calculation of global_sub_size.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31711 b3059339-0415-0410-9bf9-f77b7e298cf2

Update global_sub_pos if we auto-selected a subtitle.
This avoid strange behaviour with subtitle selection in that
case, because the subtitle selection code thinks no subtitle
was displayed while we actually did display one.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31863 b3059339-0415-0410-9bf9-f77b7e298cf2

Move function to avoid a forward declaration.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31864 b3059339-0415-0410-9bf9-f77b7e298cf2

Fix subtitle selection: make selecting -sid 0 work again by replacing the
M_PROPERTY_STEP_UP hack by M_PROPERTY_SET and set the global sub pos also
when we do not yet have a subtitle stream but do know the number of subs
from out-of-band as e.g. for DVD.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31882 b3059339-0415-0410-9bf9-f77b7e298cf2

100l, re-add vobsub_get_id_by_index call accidentally removed in
r31678.
Patch by ubitux [ubitux gmail com].

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31985 b3059339-0415-0410-9bf9-f77b7e298cf2