Add config option to disable initial file scan

forked-daapd.conf

@@ -31,23 +31,27 @@ library {
 	# names. If there is a match all items in the directory are marked as 
 	# podcasts. Eg. if you index /srv/music, and your podcasts are in
 	# /srv/music/Podcasts, you can set this to "/Podcasts".
+	# (changing this setting only takes effect after rescan, see the README)
 	podcasts = { "/Podcasts" }
 
 	# Directories containing audiobooks
 	# For each directory that is indexed the path is matched against these
 	# names. If there is a match all items in the directory are marked as 
 	# audiobooks.
+	# (changing this setting only takes effect after rescan, see the README)
 	audiobooks = { "/Audiobooks" }
 
 	# Directories containing compilations (eg soundtracks)
 	# For each directory that is indexed the path is matched against these
 	# names. If there is a match all items in the directory are marked as 
 	# compilations.
+	# (changing this setting only takes effect after rescan, see the README)
 	compilations = { "/Compilations" }
 
 	# Compilations usually have many artists, and if you don't want every
 	# artist to be listed when artist browsing in Remote, you can set
 	# a single name which will be used for all music in the compilation dir
+	# (changing this setting only takes effect after rescan, see the README)
 	compilation_artist = "Various artists"
 
 	# There are 5 default playlists: "Library", "Music", "Movies", "TV Shows"
@@ -69,8 +73,18 @@ library {
 	# scan time. By default .db and .ini are ignored.
 #	filetypes_ignore = { ".db", ".ini" }
 
+	# Disable startup file scanning
+	# When forked-daapd starts it will do an initial file scan of your
+	# library (and then watch it for changes). If you are sure your library
+	# never changes while forked-daapd is not running, you can disable the
+	# initial file scan and save some system ressources. Disabling this scan
+	# may lead to forked-daapd's database coming out of sync with the
+	# library. If that happens read the instructions in the README on how
+	# to trigger a full rescan.
+#	filescan_disable = false
+
 	# Should iTunes metadata override ours?
-#	itunes_overrides = true
+#	itunes_overrides = false
 
 	# Formats: mp4a, mp4v, mpeg, alac, flac, mpc, ogg, wma, wmal, wmav, aif, wav
 	# Formats that should never be transcoded

src/conffile.c

@@ -49,7 +49,7 @@ static cfg_opt_t sec_general[] =
     CFG_STR("logfile", STATEDIR "/log/" PACKAGE ".log", CFGF_NONE),
     CFG_STR("db_path", STATEDIR "/cache/" PACKAGE "/songs3.db", CFGF_NONE),
     CFG_INT_CB("loglevel", E_LOG, CFGF_NONE, &cb_loglevel),
-    CFG_BOOL("ipv6", cfg_true, CFGF_NONE),
+    CFG_BOOL("ipv6", cfg_false, CFGF_NONE),
     CFG_END()
   };
 
@@ -72,6 +72,7 @@ static cfg_opt_t sec_library[] =
     CFG_STR("name_audiobooks", "Audiobooks", CFGF_NONE),
     CFG_STR_LIST("artwork_basenames", "{artwork,cover,Folder}", CFGF_NONE),
     CFG_STR_LIST("filetypes_ignore", "{.db,.ini}", CFGF_NONE),
+    CFG_BOOL("filescan_disable", cfg_false, CFGF_NONE),
     CFG_BOOL("itunes_overrides", cfg_false, CFGF_NONE),
     CFG_STR_LIST("no_transcode", NULL, CFGF_NONE),
     CFG_STR_LIST("force_transcode", NULL, CFGF_NONE),

src/filescanner.c

@@ -63,6 +63,7 @@
 
 #define F_SCAN_BULK    (1 << 0)
 #define F_SCAN_RESCAN  (1 << 1)
+#define F_SCAN_FAST    (1 << 2)
 
 struct deferred_pl {
   char *path;
@@ -92,7 +93,7 @@ static struct stacked_dir *dirstack;
 
 /* Forward */
 static void
-bulk_scan(void);
+bulk_scan(int flags);
 
 static int
 push_dir(struct stacked_dir **s, char *path)
@@ -601,7 +602,7 @@ process_file(char *file, time_t mtime, off_t size, int type, int flags)
 	    {
 	      DPRINTF(E_LOG, L_SCAN, "Forcing full rescan, found force-rescan file: %s\n", file);
 	      db_purge_all();
-	      bulk_scan();
+	      bulk_scan(F_SCAN_BULK);
 
 	      return;
 	    }
@@ -748,7 +749,10 @@ process_directory(char *path, int flags)
 	}
 
       if (S_ISREG(sb.st_mode))
-	process_file(entry, sb.st_mtime, sb.st_size, type, flags);
+	{
+	  if (!(flags & F_SCAN_FAST))
+	    process_file(entry, sb.st_mtime, sb.st_size, type, flags);
+	}
       else if (S_ISDIR(sb.st_mode))
 	push_dir(&dirstack, entry);
       else
@@ -832,7 +836,7 @@ process_directories(char *root, int flags)
 
 /* Thread: scan */
 static void
-bulk_scan(void)
+bulk_scan(int flags)
 {
   cfg_t *lib;
   int ndirs;
@@ -868,7 +872,7 @@ bulk_scan(void)
 	  continue;
 	}
 
-      process_directories(deref, F_SCAN_BULK);
+      process_directories(deref, flags);
 
       free(deref);
 
@@ -876,7 +880,7 @@ bulk_scan(void)
 	return;
     }
 
-  if (playlists)
+  if (!(flags & F_SCAN_FAST) && playlists)
     process_deferred_playlists();
 
   if (scan_exit)
@@ -885,10 +889,15 @@ bulk_scan(void)
   if (dirstack)
     DPRINTF(E_LOG, L_SCAN, "WARNING: unhandled leftover directories\n");
 
-  DPRINTF(E_DBG, L_SCAN, "Purging old database content\n");
-  db_purge_cruft(start);
+  if (flags & F_SCAN_FAST)
+    DPRINTF(E_LOG, L_SCAN, "Bulk library scan complete (with file scan disabled)\n");
+  else
+    {
+      DPRINTF(E_DBG, L_SCAN, "Purging old database content\n");
+      db_purge_cruft(start);
 
-  DPRINTF(E_LOG, L_SCAN, "Bulk library scan complete\n");
+      DPRINTF(E_LOG, L_SCAN, "Bulk library scan complete\n");
+    }
 }
 
 
@@ -929,7 +938,10 @@ filescanner(void *arg)
   db_files_update_songartistid();
   db_files_update_songalbumid();
 
-  bulk_scan();
+  if (cfg_getbool(cfg_getsec(cfg, "library"), "filescan_disable"))
+    bulk_scan(F_SCAN_BULK | F_SCAN_FAST);
+  else
+    bulk_scan(F_SCAN_BULK);
 
   db_hook_post_scan();