access: extend STREAM_IS_DIRECTORY

It now takes two new bool* arguments.

 - specify if the access returns items that are already sorted.
 - specify if directories can loop into themselves

include/vlc_access.h

@@ -111,6 +111,13 @@ struct access_t
     {
         uint64_t     i_pos;     /* idem */
         bool         b_eof;     /* idem */
+
+        bool         b_dir_sorted; /* Set it to true if items returned by
+                                    * pf_readdir are already sorted. */
+
+        bool         b_dir_can_loop;  /* Set it to true if the access can't know
+                                       * if children can loop into their parents.
+                                       * It's the case for most network accesses. */
     } info;
     access_sys_t *p_sys;
 

include/vlc_stream.h

@@ -93,7 +93,7 @@ enum stream_query_e
     STREAM_CAN_FASTSEEK,        /**< arg1= bool *   res=cannot fail*/
     STREAM_CAN_PAUSE,           /**< arg1= bool *   res=cannot fail*/
     STREAM_CAN_CONTROL_PACE,    /**< arg1= bool *   res=cannot fail*/
-    STREAM_IS_DIRECTORY,        /**< arg1= bool *   res=cannot fail*/
+    STREAM_IS_DIRECTORY,        /**< arg1= bool *, arg2= bool *, arg3=bool *, res=cannot fail*/
 
     /* */
     STREAM_SET_POSITION,        /**< arg1= uint64_t       res=can fail  */

modules/access/archive/stream.c

@@ -47,8 +47,17 @@ static int Control(stream_t *p_stream, int i_query, va_list args)
     switch( i_query )
     {
         case STREAM_IS_DIRECTORY:
-            *va_arg( args, bool* ) = true;
+        {
+            bool *pb_canreaddir = va_arg( args, bool * );
+            bool *pb_dirsorted = va_arg( args, bool * );
+            bool *pb_dircanloop = va_arg( args, bool * );
+            *pb_canreaddir = true;
+            if (pb_dirsorted)
+                *pb_dirsorted = false;
+            if (pb_dircanloop)
+                pb_dircanloop = false;
             break;
+        }
 
         case STREAM_CAN_SEEK:
         case STREAM_CAN_FASTSEEK:

modules/demux/playlist/directory.c

@@ -44,7 +44,8 @@ int Import_Dir ( vlc_object_t *p_this)
     demux_t  *p_demux = (demux_t *)p_this;
 
     bool b_is_dir = false;
-    int i_err = stream_Control( p_demux->s, STREAM_IS_DIRECTORY, &b_is_dir );
+    int i_err = stream_Control( p_demux->s, STREAM_IS_DIRECTORY, &b_is_dir,
+                                NULL, NULL );
 
     if ( !( i_err == VLC_SUCCESS && b_is_dir ) )
         return VLC_EGENERIC;

modules/demux/playlist/playlist.h

@@ -84,7 +84,7 @@ bool CheckContentType( stream_t * p_stream, const char * psz_ctype );
 
 #define CHECK_FILE() do { \
     bool b_is_dir = false; \
-    stream_Control( ((demux_t *)p_this)->s, STREAM_IS_DIRECTORY, &b_is_dir ); \
+    stream_Control( ((demux_t *)p_this)->s, STREAM_IS_DIRECTORY, &b_is_dir, NULL, NULL ); \
     if( b_is_dir ) \
         return VLC_EGENERIC; \
 } while(0)

src/input/demux.c

@@ -309,7 +309,11 @@ int demux_vaControlHelper( stream_t *s,
             return stream_vaControl( s, STREAM_GET_META, args );
 
         case DEMUX_IS_PLAYLIST:
-            return stream_vaControl(s, STREAM_IS_DIRECTORY, args );
+        {
+            bool *pb_isplaylist = va_arg( args, bool * );
+            return stream_Control( s, STREAM_IS_DIRECTORY, pb_isplaylist,
+                                   NULL, NULL );
+        }
 
         case DEMUX_GET_PTS_DELAY:
         case DEMUX_GET_FPS:

src/input/stream.c

@@ -644,7 +644,13 @@ static int AStreamControl( stream_t *s, int i_query, va_list args )
         case STREAM_IS_DIRECTORY:
         {
             bool *pb_canreaddir = va_arg( args, bool * );
+            bool *pb_dirsorted = va_arg( args, bool * );
+            bool *pb_dircanloop = va_arg( args, bool * );
             *pb_canreaddir = p_sys->method == STREAM_METHOD_READDIR;
+            if( pb_dirsorted )
+                *pb_dirsorted = p_access->info.b_dir_sorted;
+            if( pb_dircanloop )
+                *pb_dircanloop = p_access->info.b_dir_can_loop;
             return VLC_SUCCESS;
         }