Add meta information to libvlc headers.

New doxygen command \libvlc_return_bool means that wrapper generators
should translate returning int to a boolean value.

For example, this is useful for Ruby, where every number, including 0,
is considered to be true.

For normal HTML/LaTeX documentation it's invisible.
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

doc/Doxyfile.in

@@ -180,6 +180,7 @@ TAB_SIZE               = 4
 # You can put \n's in the value part of an alias to insert newlines.
 
 ALIASES                =
+ALIASES += libvlc_return_bool="\if LIBVLC_RETURN_BOOL\n\par LIBVLC_RETURN_BOOL\n\endif"
 
 # Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C
 # sources only. Doxygen will then generate output that is more tailored for C.

include/vlc/libvlc.h

@@ -380,6 +380,8 @@ LIBVLC_API void libvlc_log_iterator_free( libvlc_log_iterator_t *p_iter );
  *
  * \param p_iter libvlc log iterator or NULL
  * \return true if iterator has more message objects, else false
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_log_iterator_has_next( const libvlc_log_iterator_t *p_iter );
 

include/vlc/libvlc_media.h

@@ -459,6 +459,8 @@ libvlc_media_parse_async( libvlc_media_t *p_md );
  *
  * \param p_md media descriptor object
  * \return true if media object has been parsed otherwise it returns false
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int
    libvlc_media_is_parsed( libvlc_media_t *p_md );

include/vlc/libvlc_media_discoverer.h

@@ -96,6 +96,8 @@ LIBVLC_API libvlc_event_manager_t *
  *
  * \param p_mdis media service discover object
  * \return true if running, false if not
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int
         libvlc_media_discoverer_is_running( libvlc_media_discoverer_t * p_mdis );

include/vlc/libvlc_media_list.h

@@ -167,6 +167,8 @@ LIBVLC_API int
  *
  * \param p_ml media list instance
  * \return 1 on readonly, 0 on readwrite
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int
     libvlc_media_list_is_readonly( libvlc_media_list_t * p_ml );

include/vlc/libvlc_media_player.h

@@ -179,6 +179,8 @@ LIBVLC_API libvlc_event_manager_t * libvlc_media_player_event_manager ( libvlc_m
  *
  * \param p_mi the Media Player
  * \return 1 if the media player is playing, 0 otherwise
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_media_player_is_playing ( libvlc_media_player_t *p_mi );
 
@@ -622,6 +624,8 @@ LIBVLC_API int libvlc_media_player_get_chapter_count( libvlc_media_player_t *p_m
  *
  * \param p_mi the Media Player
  * \return boolean
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_media_player_will_play( libvlc_media_player_t *p_mi );
 
@@ -724,6 +728,8 @@ LIBVLC_API unsigned libvlc_media_player_has_vout( libvlc_media_player_t *p_mi );
  *
  * \param p_mi the media player
  * \return true if the media player can seek
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi );
 
@@ -732,6 +738,8 @@ LIBVLC_API int libvlc_media_player_is_seekable( libvlc_media_player_t *p_mi );
  *
  * \param p_mi the media player
  * \return true if the media player can pause
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_media_player_can_pause( libvlc_media_player_t *p_mi );
 
@@ -794,6 +802,8 @@ LIBVLC_API void libvlc_set_fullscreen( libvlc_media_player_t *p_mi, int b_fullsc
  *
  * \param p_mi the media player
  * \return the fullscreen status (boolean)
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_get_fullscreen( libvlc_media_player_t *p_mi );
 
@@ -1379,6 +1389,8 @@ LIBVLC_API void libvlc_audio_toggle_mute( libvlc_media_player_t *p_mi );
  *
  * \param p_mi media player
  * \return the mute status (boolean)
+ *
+ * \libvlc_return_bool
  */
 LIBVLC_API int libvlc_audio_get_mute( libvlc_media_player_t *p_mi );