Remove some unnecessary recursive includes

Remove some #include lines from headers, some of those removals made
possible by using incomplete struct types instead of typedefs. Include
mp_osd.h in mplayer.c and command.c after removing it from mp_core.h.
Remove "#ifdef USE_ASS" around some "struct ass_track_s *" fields
which will now compile even without ASS support.

command.c

@@ -18,6 +18,7 @@
 #include "metadata.h"
 #include "libmpcodecs/vf.h"
 #include "libmpcodecs/vd.h"
+#include "mp_osd.h"
 #include "libvo/video_out.h"
 #include "libvo/font_load.h"
 #include "playtree.h"

libmpdemux/demuxer.h

@@ -6,9 +6,6 @@
 #include <string.h>
 
 #include "stream/stream.h"
-#ifdef USE_ASS
-#include "libass/ass_types.h"
-#endif
 
 struct MPOpts;
 
@@ -108,7 +105,7 @@ typedef struct demux_packet_st {
   struct demux_packet_st* next;
 } demux_packet_t;
 
-typedef struct {
+typedef struct demux_stream {
   int buffer_pos;          // current buffer position
   int buffer_size;         // current buffer size
   unsigned char* buffer;   // current buffer, never free() it, always use free_demux_packet(buffer_ref);

libmpdemux/stheader.h

@@ -1,7 +1,6 @@
 #ifndef MPLAYER_STHEADER_H
 #define MPLAYER_STHEADER_H
 
-#include "demuxer.h"
 #include "aviheader.h"
 #include "ms_hdr.h"
 struct MPOpts;
@@ -11,7 +10,7 @@ struct MPOpts;
 typedef struct sh_audio {
   struct MPOpts *opts;
   int aid;
-  demux_stream_t *ds;
+  struct demux_stream *ds;
   struct codecs_st *codec;
   unsigned int format;
   int initialized;
@@ -59,7 +58,7 @@ typedef struct sh_audio {
 typedef struct sh_video {
   struct MPOpts *opts;
   int vid;
-  demux_stream_t *ds;
+  struct demux_stream *ds;
   struct codecs_st *codec;
   unsigned int format;
   int initialized;
@@ -109,9 +108,7 @@ typedef struct sh_sub {
   int forced_subs_only;
   unsigned char* extradata; // extra header data passed from demuxer
   int extradata_len;
-#ifdef USE_ASS
-  ass_track_t* ass_track;  // for SSA/ASS streams (type == 'a')
-#endif
+  struct ass_track_s *ass_track;  // for SSA/ASS streams (type == 'a')
   char* lang; // track language
   int default_track;
 } sh_sub_t;

mp_core.h

@@ -2,14 +2,7 @@
 #define MPLAYER_MP_CORE_H
 
 #include "options.h"
-#include "mp_osd.h"
-#include "libao2/audio_out.h"
-#include "playtree.h"
-#include "stream/stream.h"
-#include "libmpdemux/demuxer.h"
-#include "libmpdemux/stheader.h"
 #include "mixer.h"
-#include "libvo/video_out.h"
 #include "subreader.h"
 
 // definitions used internally by the core player code
@@ -48,18 +41,18 @@ typedef struct MPContext {
     int osd_show_percentage;
     int osd_function;
     const ao_functions_t *audio_out;
-    play_tree_t *playtree;
-    play_tree_iter_t *playtree_iter;
+    struct play_tree *playtree;
+    struct play_tree_iter *playtree_iter;
     int eof;
     int play_tree_step;
 
-    stream_t *stream;
-    demuxer_t *demuxer;
-    sh_audio_t *sh_audio;
-    sh_video_t *sh_video;
-    demux_stream_t *d_audio;
-    demux_stream_t *d_video;
-    demux_stream_t *d_sub;
+    struct stream_st *stream;
+    struct demuxer_st *demuxer;
+    struct sh_audio *sh_audio;
+    struct sh_video *sh_video;
+    struct demux_stream *d_audio;
+    struct demux_stream *d_video;
+    struct demux_stream *d_sub;
     mixer_t mixer;
     struct vo *video_out;
     // Frames buffered in the vo ready to flip. Currently always 0 or 1.
@@ -88,11 +81,9 @@ typedef struct MPContext {
     int set_of_sub_pos;
     int set_of_sub_size;
     int global_sub_indices[SUB_SOURCES];
-#ifdef USE_ASS
     // set_of_ass_tracks[i] contains subtitles from set_of_subtitles[i]
     // parsed by libass or NULL if format unsupported
-    ass_track_t* set_of_ass_tracks[MAX_SUBTITLE_FILES];
-#endif
+    struct ass_track_s *set_of_ass_tracks[MAX_SUBTITLE_FILES];
     sub_data* set_of_subtitles[MAX_SUBTITLE_FILES];
 
     int file_format;
@@ -118,7 +109,7 @@ extern int file_filter;
 extern int forced_subs_only;
 
 
-int build_afilter_chain(struct MPContext *mpctx, sh_audio_t *sh_audio, ao_data_t *ao_data);
+int build_afilter_chain(struct MPContext *mpctx, struct sh_audio *sh_audio, struct ao_data_s *ao_data);
 void uninit_player(struct MPContext *mpctx, unsigned int mask);
 void reinit_audio_chain(struct MPContext *mpctx);
 void init_vo_spudec(struct MPContext *mpctx);

mplayer.c

@@ -54,6 +54,7 @@
 
 #include "subreader.h"
 
+#include "mp_osd.h"
 #include "libvo/video_out.h"
 
 #include "libvo/font_load.h"