-VLC_EXPORT( void, aout_VolumeSoftInit, ( aout_instance_t * ) );
-VLC_EXPORT( void, aout_VolumeNoneInit, ( aout_instance_t * ) );
-#define aout_VolumeGet(a, b) __aout_VolumeGet(VLC_OBJECT(a), b)
-VLC_EXPORT( int, __aout_VolumeGet, ( vlc_object_t *, audio_volume_t * ) );
-#define aout_VolumeSet(a, b) __aout_VolumeSet(VLC_OBJECT(a), b)
-VLC_EXPORT( int, __aout_VolumeSet, ( vlc_object_t *, audio_volume_t ) );
-#define aout_VolumeInfos(a, b) __aout_VolumeInfos(VLC_OBJECT(a), b)
-VLC_EXPORT( int, __aout_VolumeInfos, ( vlc_object_t *, audio_volume_t * ) );
-#define aout_VolumeUp(a, b, c) __aout_VolumeUp(VLC_OBJECT(a), b, c)
-VLC_EXPORT( int, __aout_VolumeUp, ( vlc_object_t *, int, audio_volume_t * ) );
-#define aout_VolumeDown(a, b, c) __aout_VolumeDown(VLC_OBJECT(a), b, c)
-VLC_EXPORT( int, __aout_VolumeDown, ( vlc_object_t *, int, audio_volume_t * ) );
-#define aout_VolumeMute(a, b) __aout_VolumeMute(VLC_OBJECT(a), b)
-VLC_EXPORT( int, __aout_VolumeMute, ( vlc_object_t *, audio_volume_t * ) );
-VLC_EXPORT( int, aout_FindAndRestart, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
-VLC_EXPORT( int, aout_ChannelsRestart, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
-
-VLC_EXPORT( void, aout_EnableFilter, (vlc_object_t *, const char *, bool ));
-
-#define aout_VisualNext(a) aout_VisualChange( VLC_OBJECT(a),1 )
-#define aout_VisualPrev(a) aout_VisualChange( VLC_OBJECT(a),-1 )
-
-VLC_EXPORT( char *, aout_VisualChange, (vlc_object_t *, int ) );
+VLC_API void aout_VolumeSoftInit( aout_instance_t * );
+VLC_API void aout_VolumeNoneInit( aout_instance_t * );
+VLC_API audio_volume_t aout_VolumeGet( vlc_object_t * );
+#define aout_VolumeGet(a) aout_VolumeGet(VLC_OBJECT(a))
+VLC_API int aout_VolumeSet( vlc_object_t *, audio_volume_t );
+#define aout_VolumeSet(a, b) aout_VolumeSet(VLC_OBJECT(a), b)
+VLC_API int aout_VolumeUp( vlc_object_t *, int, audio_volume_t * );
+#define aout_VolumeUp(a, b, c) aout_VolumeUp(VLC_OBJECT(a), b, c)
+VLC_API int aout_VolumeDown( vlc_object_t *, int, audio_volume_t * );
+#define aout_VolumeDown(a, b, c) aout_VolumeDown(VLC_OBJECT(a), b, c)
+VLC_API int aout_ToggleMute( vlc_object_t *, audio_volume_t * );
+#define aout_ToggleMute(a, b) aout_ToggleMute(VLC_OBJECT(a), b)
+VLC_API int aout_SetMute( vlc_object_t *, audio_volume_t *, bool );
+VLC_API bool aout_IsMuted( vlc_object_t * );
+VLC_API int aout_ChannelsRestart( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * );
+
+VLC_API void aout_EnableFilter(vlc_object_t *, const char *, bool );
+#define aout_EnableFilter( o, n, b ) \
+ aout_EnableFilter( VLC_OBJECT(o), n, b )
+
+/* */
+VLC_API vout_thread_t * aout_filter_RequestVout( filter_t *, vout_thread_t *p_vout, video_format_t *p_fmt ) VLC_USED;