include/vlc/libvlc.h: publish libvlc_media_instance_set_chapter,...

include/vlc/libvlc.h: publish libvlc_media_instance_set_chapter, libvlc_media_instance_get_chapter, libvlc_media_instance_get_chapter_count, libvlc_audio_get_track_count.(Patch by Enrique Osuna).@

include/vlc/libvlc.h

@@ -413,6 +413,9 @@ VLC_PUBLIC_API vlc_int64_t libvlc_media_instance_get_time       ( libvlc_media_i
 VLC_PUBLIC_API void        libvlc_media_instance_set_time       ( libvlc_media_instance_t *, vlc_int64_t, libvlc_exception_t *);
 VLC_PUBLIC_API float       libvlc_media_instance_get_position   ( libvlc_media_instance_t *, libvlc_exception_t *);
 VLC_PUBLIC_API void        libvlc_media_instance_set_position   ( libvlc_media_instance_t *, float, libvlc_exception_t *);
+VLC_PUBLIC_API void        libvlc_media_instance_set_chapter    ( libvlc_media_instance_t *, int, libvlc_exception_t *);
+VLC_PUBLIC_API int         libvlc_media_instance_get_chapter    (libvlc_media_instance_t *, libvlc_exception_t *);
+VLC_PUBLIC_API int         libvlc_media_instance_get_chapter_count( libvlc_media_instance_t *, libvlc_exception_t *);
 VLC_PUBLIC_API vlc_bool_t  libvlc_media_instance_will_play      ( libvlc_media_instance_t *, libvlc_exception_t *);
 VLC_PUBLIC_API float       libvlc_media_instance_get_rate       ( libvlc_media_instance_t *, libvlc_exception_t *);
 VLC_PUBLIC_API void        libvlc_media_instance_set_rate       ( libvlc_media_instance_t *, float, libvlc_exception_t *);
@@ -928,6 +931,14 @@ VLC_PUBLIC_API int libvlc_audio_get_volume( libvlc_instance_t *, libvlc_exceptio
  */
 VLC_PUBLIC_API void libvlc_audio_set_volume( libvlc_instance_t *, int, libvlc_exception_t *);
 
+/**
+ * Get number of available audio tracks
+ * \param p_mi media instance
+ * \param p_e an initialized exception
+ * \return the number of available audio tracks (int)
+ */
+VLC_PUBLIC_API int libvlc_audio_get_track_count( libvlc_media_instance_t *,  libvlc_exception_t * );
+
 /**
 +  * Get current audio track
 +  * \param p_input input instance