]> git.sesse.net Git - vlc/blobdiff - include/vlc_input.h
Removes trailing spaces. Removes tabs.
[vlc] / include / vlc_input.h
index a6825f30e82292b46314b3494289587fc4924e75..e185d4c40bd4f143bdc81cf0029a754303f35ff5 100644 (file)
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  *****************************************************************************/
 
+#if !defined( __LIBVLC__ )
+  #error You are not libvlc or one of its plugins. You cannot include this file
+#endif
+
 /* __ is need because conflict with <vlc/input.h> */
 #ifndef _VLC__INPUT_H
 #define _VLC__INPUT_H 1
 
 #include <vlc_es.h>
 #include <vlc_meta.h>
+#include <vlc_epg.h>
+#include <vlc_events.h>
+
+#include <string.h>                                     /* strcasestr() */
 
 struct vlc_meta_t;
 
@@ -75,32 +83,31 @@ struct input_item_t
 
     vlc_meta_t *p_meta;
 
-    vlc_mutex_t lock;                /**< Lock for the item */
+    vlc_event_manager_t event_manager;
+
+    vlc_mutex_t lock;                 /**< Lock for the item */
 };
 
 #define ITEM_TYPE_UNKNOWN       0
-#define ITEM_TYPE_AFILE         1
-#define ITEM_TYPE_VFILE         2
-#define ITEM_TYPE_DIRECTORY     3
-#define ITEM_TYPE_DISC          4
-#define ITEM_TYPE_CDDA          5
-#define ITEM_TYPE_CARD          6
-#define ITEM_TYPE_NET           7
-#define ITEM_TYPE_PLAYLIST      8
-#define ITEM_TYPE_NODE          9
-#define ITEM_TYPE_NUMBER        10
+#define ITEM_TYPE_FILE          1
+#define ITEM_TYPE_DIRECTORY     2
+#define ITEM_TYPE_DISC          3
+#define ITEM_TYPE_CDDA          4
+#define ITEM_TYPE_CARD          5
+#define ITEM_TYPE_NET           6
+#define ITEM_TYPE_PLAYLIST      7
+#define ITEM_TYPE_NODE          8
+#define ITEM_TYPE_NUMBER        9
 
 static inline void input_ItemInit( vlc_object_t *p_o, input_item_t *p_i )
 {
     memset( p_i, 0, sizeof(input_item_t) );
-    p_i->psz_name = 0;
-    p_i->psz_uri = 0;
-    p_i->i_es = 0;
-    p_i->es = 0;
-    p_i->i_options  = 0;
-    p_i->ppsz_options = 0;
-    p_i->i_categories = 0 ;
-    p_i->pp_categories = 0;
+    p_i->psz_name = NULL;
+    p_i->psz_uri = NULL;
+    TAB_INIT( p_i->i_es, p_i->es );
+    TAB_INIT( p_i->i_options, p_i->ppsz_options );
+    TAB_INIT( p_i->i_categories, p_i->pp_categories );
+
     p_i->i_type = ITEM_TYPE_UNKNOWN;
     p_i->b_fixed_name = VLC_TRUE;
 
@@ -108,6 +115,11 @@ static inline void input_ItemInit( vlc_object_t *p_o, input_item_t *p_i )
     p_i->p_meta = NULL;
 
     vlc_mutex_init( p_o, &p_i->lock );
+    vlc_event_manager_init( &p_i->event_manager, p_i, p_o );
+    vlc_event_manager_register_event_type( &p_i->event_manager,
+        vlc_InputItemMetaChanged );
+    vlc_event_manager_register_event_type( &p_i->event_manager,
+        vlc_InputItemSubItemAdded );
 }
 
 static inline void input_ItemCopyOptions( input_item_t *p_parent,
@@ -125,11 +137,38 @@ static inline void input_ItemCopyOptions( input_item_t *p_parent,
     }
 }
 
+static inline void input_item_SetName( input_item_t *p_item, const char *psz_name )
+{
+    if( p_item->psz_name ) free( p_item->psz_name );
+    p_item->psz_name = strdup( psz_name );
+}
+
+/* This won't hold the item, but can tell to interested third parties
+ * Like the playlist, that there is a new sub item. With this design
+ * It is not the input item's responsability to keep all the ref of
+ * the input item children. */
+static inline void input_ItemAddSubItem( input_item_t *p_parent,
+                                         input_item_t *p_child )
+{
+    vlc_event_t event;
+
+    p_parent->i_type = ITEM_TYPE_PLAYLIST;
+
+    /* Notify interested third parties */
+    event.type = vlc_InputItemSubItemAdded;
+    event.u.input_item_subitem_added.p_new_child = p_child;
+    vlc_event_send( &p_parent->event_manager, &event );
+}
+
 VLC_EXPORT( void, input_ItemAddOption,( input_item_t *, const char * ) );
 VLC_EXPORT( void, input_ItemAddOptionNoDup,( input_item_t *, const char * ) );
 
 static inline void input_ItemClean( input_item_t *p_i )
 {
+    int i;
+
+    vlc_event_manager_fini( &p_i->event_manager );
+
     free( p_i->psz_name );
     free( p_i->psz_uri );
     if( p_i->p_stats )
@@ -138,60 +177,296 @@ static inline void input_ItemClean( input_item_t *p_i )
         free( p_i->p_stats );
     }
 
-    if( p_i->p_meta ) vlc_meta_Delete( p_i->p_meta );
+    if( p_i->p_meta )
+        vlc_meta_Delete( p_i->p_meta );
 
-    while( p_i->i_options )
+    for( i = 0; i < p_i->i_options; i++ )
     {
-        p_i->i_options--;
-        if( p_i->ppsz_options[p_i->i_options] )
-            free( p_i->ppsz_options[p_i->i_options] );
-        if( !p_i->i_options ) free( p_i->ppsz_options );
+        if( p_i->ppsz_options[i] )
+            free( p_i->ppsz_options[i] );
     }
+    TAB_CLEAN( p_i->i_options, p_i->ppsz_options );
 
-    while( p_i->i_es )
+    for( i = 0; i < p_i->i_es; i++ )
     {
-        p_i->i_es--;
-        es_format_Clean( p_i->es[p_i->i_es] );
-        if( !p_i->i_es ) free( p_i->es );
+        es_format_Clean( p_i->es[i] );
+        free( p_i->es[i] );
     }
+    TAB_CLEAN( p_i->i_es, p_i->es );
 
-    while( p_i->i_categories )
+    for( i = 0; i < p_i->i_categories; i++ )
     {
-        info_category_t *p_category =
-            p_i->pp_categories[--(p_i->i_categories)];
+        info_category_t *p_category = p_i->pp_categories[i];
+        int j;
 
-        while( p_category->i_infos )
+        for( j = 0; j < p_category->i_infos; j++ )
         {
-            p_category->i_infos--;
-
-            if( p_category->pp_infos[p_category->i_infos]->psz_name )
-                free( p_category->pp_infos[p_category->i_infos]->psz_name);
-            if( p_category->pp_infos[p_category->i_infos]->psz_value )
-                free( p_category->pp_infos[p_category->i_infos]->psz_value );
-            free( p_category->pp_infos[p_category->i_infos] );
+            struct info_t *p_info = p_category->pp_infos[j];
 
-            if( !p_category->i_infos ) free( p_category->pp_infos );
+            if( p_info->psz_name )
+                free( p_info->psz_name);
+            if( p_info->psz_value )
+                free( p_info->psz_value );
+            free( p_info );
         }
+        TAB_CLEAN( p_category->i_infos, p_category->pp_infos );
 
         if( p_category->psz_name ) free( p_category->psz_name );
         free( p_category );
-
-        if( !p_i->i_categories ) free( p_i->pp_categories );
     }
+    TAB_CLEAN( p_i->i_categories, p_i->pp_categories );
 
     vlc_mutex_destroy( &p_i->lock );
 }
 
+static inline void input_item_SetMeta( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz_val )
+{
+    vlc_event_t event;
+
+    vlc_mutex_lock( &p_i->lock );
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+    vlc_meta_Set( p_i->p_meta, meta_type, psz_val );
+    vlc_mutex_unlock( &p_i->lock );
+
+    /* Notify interested third parties */
+    event.type = vlc_InputItemMetaChanged;
+    event.u.input_item_meta_changed.meta_type = meta_type;
+    vlc_event_send( &p_i->event_manager, &event );
+}
+
+static inline vlc_bool_t input_item_MetaMatch( input_item_t *p_i, vlc_meta_type_t meta_type, const char *psz )
+{
+    vlc_mutex_lock( &p_i->lock );
+    if( !p_i->p_meta )
+    {
+        vlc_mutex_unlock( &p_i->lock );
+        return VLC_FALSE;
+    }
+    const char * meta = vlc_meta_Get( p_i->p_meta, meta_type );
+    vlc_bool_t ret = meta && strcasestr( meta, psz );
+    vlc_mutex_unlock( &p_i->lock );
+
+    return ret;
+}
+
+static inline char * input_item_GetMeta( input_item_t *p_i, vlc_meta_type_t meta_type )
+{
+    char * psz = NULL;
+    vlc_mutex_lock( &p_i->lock );
+
+    if( !p_i->p_meta )
+    {
+        vlc_mutex_unlock( &p_i->lock );
+        return NULL;
+    }
+
+    if( vlc_meta_Get( p_i->p_meta, meta_type ) )
+        psz = strdup( vlc_meta_Get( p_i->p_meta, meta_type ) );
+
+    vlc_mutex_unlock( &p_i->lock );
+    return psz;
+}
+
+static inline char * input_item_GetName( input_item_t * p_i )
+{
+    vlc_mutex_lock( &p_i->lock );
+    char *psz_s = p_i->psz_name ? strdup( p_i->psz_name ) : NULL;
+    vlc_mutex_unlock( &p_i->lock );
+    return psz_s;
+}
+
+static inline char * input_item_GetURI( input_item_t * p_i )
+{
+    vlc_mutex_lock( &p_i->lock );
+    char *psz_s = p_i->psz_uri ? strdup( p_i->psz_uri ) : NULL;
+    vlc_mutex_unlock( &p_i->lock );
+    return psz_s;
+}
+
+static inline void input_item_SetURI( input_item_t * p_i, char * psz_uri )
+{
+    vlc_mutex_lock( &p_i->lock );
+    if( p_i->psz_uri ) free( p_i->psz_uri );
+        p_i->psz_uri = strdup( psz_uri );
+    vlc_mutex_unlock( &p_i->lock );
+}
+
+static inline mtime_t input_item_GetDuration( input_item_t * p_i )
+{
+    vlc_mutex_lock( &p_i->lock );
+    mtime_t i_duration = p_i->i_duration;
+    vlc_mutex_unlock( &p_i->lock );
+    return i_duration;
+}
+
+static inline void input_item_SetDuration( input_item_t * p_i, mtime_t i_duration )
+{
+    vlc_mutex_lock( &p_i->lock );
+    p_i->i_duration = i_duration;
+    vlc_mutex_unlock( &p_i->lock );
+    return;
+}
+
+static inline void input_item_SetPreparsed( input_item_t *p_i, vlc_bool_t preparsed )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    if( preparsed )
+        p_i->p_meta->i_status |= ITEM_PREPARSED;
+    else
+        p_i->p_meta->i_status &= ~ITEM_PREPARSED;
+}
+
+static inline vlc_bool_t input_item_IsPreparsed( input_item_t *p_i )
+{
+    return p_i->p_meta ? p_i->p_meta->i_status & ITEM_PREPARSED : VLC_FALSE ;
+}
+
+static inline void input_item_SetMetaFetched( input_item_t *p_i, vlc_bool_t metafetched )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    if( metafetched )
+        p_i->p_meta->i_status |= ITEM_META_FETCHED;
+    else
+        p_i->p_meta->i_status &= ~ITEM_META_FETCHED;
+}
+
+static inline vlc_bool_t input_item_IsMetaFetched( input_item_t *p_i )
+{
+    return p_i->p_meta ? p_i->p_meta->i_status & ITEM_META_FETCHED : VLC_FALSE ;
+}
+
+
+static inline void input_item_SetArtNotFound( input_item_t *p_i, vlc_bool_t notfound )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    if( notfound )
+        p_i->p_meta->i_status |= ITEM_ART_NOTFOUND;
+    else
+        p_i->p_meta->i_status &= ~ITEM_ART_NOTFOUND;
+}
+
+static inline void input_item_SetArtFetched( input_item_t *p_i, vlc_bool_t artfetched )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    if( artfetched )
+        p_i->p_meta->i_status |= ITEM_ART_FETCHED;
+    else
+        p_i->p_meta->i_status &= ~ITEM_ART_FETCHED;
+}
+
+static inline vlc_bool_t input_item_IsArtFetched( input_item_t *p_i )
+{
+    return p_i->p_meta ? p_i->p_meta->i_status & ITEM_ART_FETCHED : VLC_FALSE ;
+}
+
+static inline const vlc_meta_t * input_item_GetMetaObject( input_item_t *p_i )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    return p_i->p_meta;
+}
+
+static inline void input_item_MetaMerge( input_item_t *p_i, const vlc_meta_t * p_new_meta )
+{
+    if( !p_i->p_meta )
+        p_i->p_meta = vlc_meta_New();
+
+    vlc_meta_Merge( p_i->p_meta, p_new_meta );
+}
+
+#define input_item_SetTitle( item, b )       input_item_SetMeta( item, vlc_meta_Title, b )
+#define input_item_SetArtist( item, b )      input_item_SetMeta( item, vlc_meta_Artist, b )
+#define input_item_SetGenre( item, b )       input_item_SetMeta( item, vlc_meta_Genre, b )
+#define input_item_SetCopyright( item, b )   input_item_SetMeta( item, vlc_meta_Copyright, b )
+#define input_item_SetAlbum( item, b )       input_item_SetMeta( item, vlc_meta_Album, b )
+#define input_item_SetTrackNum( item, b )    input_item_SetMeta( item, vlc_meta_TrackNumber, b )
+#define input_item_SetDescription( item, b ) input_item_SetMeta( item, vlc_meta_Description, b )
+#define input_item_SetRating( item, b )      input_item_SetMeta( item, vlc_meta_Rating, b )
+#define input_item_SetDate( item, b )        input_item_SetMeta( item, vlc_meta_Date, b )
+#define input_item_SetSetting( item, b )     input_item_SetMeta( item, vlc_meta_Setting, b )
+#define input_item_SetURL( item, b )         input_item_SetMeta( item, vlc_meta_URL, b )
+#define input_item_SetLanguage( item, b )    input_item_SetMeta( item, vlc_meta_Language, b )
+#define input_item_SetNowPlaying( item, b )  input_item_SetMeta( item, vlc_meta_NowPlaying, b )
+#define input_item_SetPublisher( item, b )   input_item_SetMeta( item, vlc_meta_Publisher, b )
+#define input_item_SetEncodedBy( item, b )   input_item_SetMeta( item, vlc_meta_EncodedBy, b )
+#define input_item_SetArtURL( item, b )      input_item_SetMeta( item, vlc_meta_ArtworkURL, b )
+#define input_item_SetTrackID( item, b )     input_item_SetMeta( item, vlc_meta_TrackID, b )
+
+#define input_item_GetTitle( item )          input_item_GetMeta( item, vlc_meta_Title )
+#define input_item_GetArtist( item )         input_item_GetMeta( item, vlc_meta_Artist )
+#define input_item_GetGenre( item )          input_item_GetMeta( item, vlc_meta_Genre )
+#define input_item_GetCopyright( item )      input_item_GetMeta( item, vlc_meta_Copyright )
+#define input_item_GetAlbum( item )          input_item_GetMeta( item, vlc_meta_Album )
+#define input_item_GetTrackNum( item )       input_item_GetMeta( item, vlc_meta_TrackNumber )
+#define input_item_GetDescription( item )    input_item_GetMeta( item, vlc_meta_Description )
+#define input_item_GetRating( item )         input_item_GetMeta( item, vlc_meta_Rating )
+#define input_item_GetDate( item )           input_item_GetMeta( item, vlc_meta_Date )
+#define input_item_GetGetting( item )        input_item_GetMeta( item, vlc_meta_Getting )
+#define input_item_GetURL( item )            input_item_GetMeta( item, vlc_meta_URL )
+#define input_item_GetLanguage( item )       input_item_GetMeta( item, vlc_meta_Language )
+#define input_item_GetNowPlaying( item )     input_item_GetMeta( item, vlc_meta_NowPlaying )
+#define input_item_GetPublisher( item )      input_item_GetMeta( item, vlc_meta_Publisher )
+#define input_item_GetEncodedBy( item )      input_item_GetMeta( item, vlc_meta_EncodedBy )
+#define input_item_GetArtURL( item )         input_item_GetMeta( item, vlc_meta_ArtworkURL )
+#define input_item_GetTrackID( item )        input_item_GetMeta( item, vlc_meta_TrackID )
+#define input_item_GetSetting( item )        input_item_GetMeta( item, vlc_meta_Setting )
+
 VLC_EXPORT( char *, input_ItemGetInfo, ( input_item_t *p_i, const char *psz_cat,const char *psz_name ) );
 VLC_EXPORT(int, input_ItemAddInfo, ( input_item_t *p_i, const char *psz_cat, const char *psz_name, const char *psz_format, ... ) );
 
 #define input_ItemNew( a,b,c ) input_ItemNewExt( a, b, c, 0, NULL, -1 )
 #define input_ItemNewExt(a,b,c,d,e,f) __input_ItemNewExt( VLC_OBJECT(a),b,c,d,e,f)
-VLC_EXPORT( input_item_t *, __input_ItemNewExt, (vlc_object_t *, const char *, const char*, int, const char *const *, int)  );
-VLC_EXPORT( input_item_t *, input_ItemNewWithType, ( vlc_object_t *, const char *, const char *e, int, const char *const *, int, int ) );
+VLC_EXPORT( input_item_t *, __input_ItemNewExt, (vlc_object_t *, const char *, const char*, int, const char *const *, mtime_t i_duration )  );
+VLC_EXPORT( input_item_t *, input_ItemNewWithType, ( vlc_object_t *, const char *, const char *e, int, const char *const *, mtime_t i_duration, int ) );
 
 VLC_EXPORT( input_item_t *, input_ItemGetById, (playlist_t *, int ) );
 
+/*****************************************************************************
+ * Meta data helpers
+ *****************************************************************************/
+static inline void vlc_audio_replay_gain_MergeFromMeta( audio_replay_gain_t *p_dst,
+                                                        const vlc_meta_t *p_meta )
+{
+    char * psz_value;
+
+    if( !p_meta )
+        return;
+
+    if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_GAIN" )) ||
+        (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_RADIO" )) )
+    {
+        p_dst->pb_gain[AUDIO_REPLAY_GAIN_TRACK] = VLC_TRUE;
+        p_dst->pf_gain[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
+    }
+    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_TRACK_PEAK" )) ||
+             (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_PEAK" )) )
+    {
+        p_dst->pb_peak[AUDIO_REPLAY_GAIN_TRACK] = VLC_TRUE;
+        p_dst->pf_peak[AUDIO_REPLAY_GAIN_TRACK] = atof( psz_value );
+    }
+    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_GAIN" )) ||
+             (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "RG_AUDIOPHILE" )) )
+    {
+        p_dst->pb_gain[AUDIO_REPLAY_GAIN_ALBUM] = VLC_TRUE;
+        p_dst->pf_gain[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
+    }
+    else if( (psz_value = (char *)vlc_dictionary_value_for_key( &p_meta->extra_tags, "REPLAYGAIN_ALBUM_PEAK" )) )
+    {
+        p_dst->pb_peak[AUDIO_REPLAY_GAIN_ALBUM] = VLC_TRUE;
+        p_dst->pf_peak[AUDIO_REPLAY_GAIN_ALBUM] = atof( psz_value );
+    }
+}
+
 /*****************************************************************************
  * Seek point: (generalisation of chapters)
  *****************************************************************************/
@@ -300,7 +575,57 @@ static inline input_title_t *vlc_input_title_Duplicate( input_title_t *t )
 
     return dup;
 }
+/*****************************************************************************
+ * Attachments
+ *****************************************************************************/
+struct input_attachment_t
+{
+    char *psz_name;
+    char *psz_mime;
+    char *psz_description;
 
+    int  i_data;
+    void *p_data;
+};
+static inline input_attachment_t *vlc_input_attachment_New( const char *psz_name,
+                                                            const char *psz_mime,
+                                                            const char *psz_description,
+                                                            const void *p_data,
+                                                            int i_data )
+{
+    input_attachment_t *a =
+        (input_attachment_t*)malloc( sizeof(input_attachment_t) );
+    if( !a )
+        return NULL;
+    a->psz_name = strdup( psz_name ? psz_name : "" );
+    a->psz_mime = strdup( psz_mime ? psz_mime : "" );
+    a->psz_description = strdup( psz_description ? psz_description : "" );
+    a->i_data = i_data;
+    a->p_data = NULL;
+    if( i_data > 0 )
+    {
+        a->p_data = malloc( i_data );
+        if( a->p_data && p_data )
+            memcpy( a->p_data, p_data, i_data );
+    }
+    return a;
+}
+static inline input_attachment_t *vlc_input_attachment_Duplicate( const input_attachment_t *a )
+{
+    return vlc_input_attachment_New( a->psz_name, a->psz_mime, a->psz_description,
+                                     a->p_data, a->i_data );
+}
+static inline void vlc_input_attachment_Delete( input_attachment_t *a )
+{
+    if( !a )
+        return;
+    free( a->psz_name );
+    free( a->psz_mime );
+    free( a->psz_description );
+    if( a->p_data )
+        free( a->p_data );
+    free( a );
+}
 /*****************************************************************************
  * input defines/constants.
  *****************************************************************************/
@@ -323,7 +648,7 @@ enum input_state_e
  */
 #define INPUT_RATE_DEFAULT  1000
 #define INPUT_RATE_MIN       125            /* Up to 8/1 */
-#define INPUT_RATE_MAX      8000            /* Up to 1/8 */
+#define INPUT_RATE_MAX     32000            /* Up to 1/32 */
 
 /* i_update field of access_t/demux_t */
 #define INPUT_UPDATE_NONE       0x0000
@@ -369,8 +694,6 @@ struct input_thread_t
  *****************************************************************************/
 #define input_CreateThread(a,b) __input_CreateThread(VLC_OBJECT(a),b)
 VLC_EXPORT( input_thread_t *, __input_CreateThread, ( vlc_object_t *, input_item_t * ) );
-#define input_CreateThread2(a,b,c) __input_CreateThread2(VLC_OBJECT(a),b,c)
-VLC_EXPORT( input_thread_t *, __input_CreateThread2, ( vlc_object_t *, input_item_t *, char * ) );
 #define input_Preparse(a,b) __input_Preparse(VLC_OBJECT(a),b)
 VLC_EXPORT( int, __input_Preparse, ( vlc_object_t *, input_item_t * ) );
 
@@ -427,6 +750,10 @@ enum input_query_e
     INPUT_DEL_BOOKMARK,    /* arg1= seekpoint_t *  res=can fail   */
     INPUT_SET_BOOKMARK,    /* arg1= int  res=can fail    */
 
+    /* Attachments */
+    INPUT_GET_ATTACHMENTS, /* arg1=input_attachment_t***, arg2=int*  res=can fail */
+    INPUT_GET_ATTACHMENT,  /* arg1=input_attachment_t**, arg2=char*  res=can fail */
+
     /* On the fly input slave */
     INPUT_ADD_SLAVE        /* arg1= char * */
 };