Merge pull request #575 from Rafostar/playlistable

Expandable playlists support

COPYING-LGPL

@@ -2,7 +2,7 @@
                        Version 2.1, February 1999
 
  Copyright (C) 1991, 1999 Free Software Foundation, Inc.
- 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -55,7 +55,7 @@ modified by someone else and passed on, the recipients should know
 that what they have is not the original version, so that the original
 author's reputation will not be affected by problems that might be
 introduced by others.
-
+
   Finally, software patents pose a constant threat to the existence of
 any free program.  We wish to make sure that a company cannot
 effectively restrict the users of a free program by obtaining a
@@ -111,7 +111,7 @@ modification follow.  Pay close attention to the difference between a
 "work based on the library" and a "work that uses the library".  The
 former contains code derived from the library, whereas the latter must
 be combined with the library in order to run.
-
+
                   GNU LESSER GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
@@ -158,7 +158,7 @@ Library.
   You may charge a fee for the physical act of transferring a copy,
 and you may at your option offer warranty protection in exchange for a
 fee.
-
+
   2. You may modify your copy or copies of the Library or any portion
 of it, thus forming a work based on the Library, and copy and
 distribute such modifications or work under the terms of Section 1
@@ -216,7 +216,7 @@ instead of to this License.  (If a newer version than version 2 of the
 ordinary GNU General Public License has appeared, then you can specify
 that version instead if you wish.)  Do not make any other change in
 these notices.
-
+
   Once this change is made in a given copy, it is irreversible for
 that copy, so the ordinary GNU General Public License applies to all
 subsequent copies and derivative works made from that copy.
@@ -267,7 +267,7 @@ Library will still fall under Section 6.)
 distribute the object code for the work under the terms of Section 6.
 Any executables containing that work also fall under Section 6,
 whether or not they are linked directly with the Library itself.
-
+
   6. As an exception to the Sections above, you may also combine or
 link a "work that uses the Library" with the Library to produce a
 work containing portions of the Library, and distribute that work
@@ -329,7 +329,7 @@ restrictions of other proprietary libraries that do not normally
 accompany the operating system.  Such a contradiction means you cannot
 use both them and the Library together in an executable that you
 distribute.
-
+
   7. You may place library facilities that are a work based on the
 Library side-by-side in a single library together with other library
 facilities not covered by this License, and distribute such a combined
@@ -370,7 +370,7 @@ subject to these terms and conditions.  You may not impose any further
 restrictions on the recipients' exercise of the rights granted herein.
 You are not responsible for enforcing compliance by third parties with
 this License.
-
+
   11. If, as a consequence of a court judgment or allegation of patent
 infringement or for any other reason (not limited to patent issues),
 conditions are imposed on you (whether by court order, agreement or
@@ -422,7 +422,7 @@ conditions either of that version or of any later version published by
 the Free Software Foundation.  If the Library does not specify a
 license version number, you may choose any version ever published by
 the Free Software Foundation.
-
+
   14. If you wish to incorporate parts of the Library into other free
 programs whose distribution conditions are incompatible with these,
 write to the author to ask for permission.  For software which is
@@ -456,7 +456,7 @@ SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGES.
 
                      END OF TERMS AND CONDITIONS
-
+
            How to Apply These Terms to Your New Libraries
 
   If you develop a new library, and you want it to be of the greatest
@@ -484,9 +484,7 @@ convey the exclusion of warranty; and each file should have at least the
     Lesser General Public License for more details.
 
     You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
-    USA
+    License along with this library; if not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -495,10 +493,9 @@ school, if any, to sign a "copyright disclaimer" for the library, if
 necessary.  Here is a sample; alter the names:
 
   Yoyodyne, Inc., hereby disclaims all copyright interest in the
-  library `Frob' (a library for tweaking knobs) written by James Random
-  Hacker.
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
 
-  <signature of Ty Coon>, 1 April 1990
-  Ty Coon, President of Vice
+  <signature of Moe Ghoul>, 1 April 1990
+  Moe Ghoul, President of Vice
 
 That's all there is to it!

meson.build

@@ -1,5 +1,5 @@
 project('clapper', 'c',
-  version: '0.9.0',
+  version: '0.9.1',
   meson_version: '>= 0.64.0',
   license: 'LGPL-2.1-or-later AND GPL-3.0-or-later', # LGPL-2.1+ for libs and gst-plugin, GPL-3.0+ for app
   default_options: [

src/bin/clapper-app/clapper-app-application.c

@@ -642,18 +642,6 @@ clapper_app_application_command_line (GApplication *app, GApplicationCommandLine
   return EXIT_SUCCESS;
 }
 
-static gboolean
-_is_claps_file (GFile *file)
-{
-  gchar *basename = g_file_get_basename (file);
-  gboolean is_claps;
-
-  is_claps = (basename && g_str_has_suffix (basename, ".claps"));
-  g_free (basename);
-
-  return is_claps;
-}
-
 static void
 add_item_from_file (GFile *file, ClapperQueue *queue)
 {
@@ -666,51 +654,6 @@ add_item_from_file (GFile *file, ClapperQueue *queue)
   gst_object_unref (item);
 }
 
-static void
-add_items_from_claps_file (GFile *file, ClapperQueue *queue)
-{
-  GDataInputStream *dstream = NULL;
-  GFileInputStream *stream;
-  GError *error = NULL;
-  gchar *line;
-
-  if (!(stream = g_file_read (file, NULL, &error)))
-    goto finish;
-
-  dstream = g_data_input_stream_new (G_INPUT_STREAM (stream));
-
-  while ((line = g_data_input_stream_read_line (
-      dstream, NULL, NULL, &error))) {
-    g_strstrip (line);
-
-    if (strlen (line) > 0) {
-      GFile *tmp_file = gst_uri_is_valid (line)
-          ? g_file_new_for_uri (line)
-          : g_file_new_for_path (line);
-
-      if (_is_claps_file (tmp_file))
-        add_items_from_claps_file (tmp_file, queue);
-      else
-        add_item_from_file (tmp_file, queue);
-
-      g_object_unref (tmp_file);
-    }
-
-    g_free (line);
-  }
-
-finish:
-  if (error) {
-    GST_ERROR ("Could not read \".claps\" file, reason: %s", error->message);
-    g_error_free (error);
-  }
-  if (stream) {
-    g_input_stream_close (G_INPUT_STREAM (stream), NULL, NULL);
-    g_object_unref (stream);
-  }
-  g_clear_object (&dstream);
-}
-
 static void
 add_item_with_subtitles (GFile *media_file,
     GFile *subs_file, ClapperQueue *queue)
@@ -779,12 +722,8 @@ clapper_app_application_open (GApplication *app,
   if (!handled) {
     gint i;
 
-    for (i = 0; i < n_files; ++i) {
-      if (_is_claps_file (files[i]))
-        add_items_from_claps_file (files[i], queue);
-      else
-        add_item_from_file (files[i], queue);
-    }
+    for (i = 0; i < n_files; ++i)
+      add_item_from_file (files[i], queue);
   }
 
   add_only = (g_strcmp0 (hint, "add-only") == 0);

src/bin/clapper-app/clapper-app-utils.c

@@ -582,7 +582,7 @@ _create_pipeline_svg_file_in_thread (GTask *task, GObject *source G_GNUC_UNUSED,
   GVC_t *gvc;
   gchar *path, *template = NULL, *dot_data = NULL, *img_data = NULL;
   gint fd;
-  guint size = 0;
+  gsize size = 0;
 
   if (!(tmp_subdir = _create_tmp_subdir ("pipelines", cancellable, &error)))
     goto finish;
@@ -610,7 +610,16 @@ _create_pipeline_svg_file_in_thread (GTask *task, GObject *source G_GNUC_UNUSED,
 
   gvc = gvContext ();
   gvLayout (gvc, graph, "dot");
+
+#ifdef HAVE_GVC_13
   gvRenderData (gvc, graph, "svg", &img_data, &size);
+#else
+  {
+    guint tmp_size = 0; // Temporary uint to satisfy older API
+    gvRenderData (gvc, graph, "svg", &img_data, &tmp_size);
+    size = tmp_size;
+  }
+#endif
 
   agclose (graph);
   gvFreeContext (gvc);

src/bin/clapper-app/clapper-app-window.c

@@ -86,9 +86,7 @@ typedef struct
   gint64 last_tick;
 } ClapperAppWindowResizeData;
 
-#if CLAPPER_HAVE_MPRIS
 static guint16 instance_count = 0;
-#endif
 
 static inline GQuark
 clapper_app_window_extra_options_get_quark (void)
@@ -1239,6 +1237,8 @@ clapper_app_window_constructed (GObject *object)
   ClapperAppWindow *self = CLAPPER_APP_WINDOW_CAST (object);
   ClapperPlayer *player = clapper_app_window_get_player (self);
   ClapperQueue *queue = clapper_player_get_queue (player);
+  ClapperEnhancerProxyList *proxies = clapper_player_get_enhancer_proxies (player);
+  ClapperEnhancerProxy *proxy;
   ClapperGtkExtraMenuButton *button;
   AdwStyleManager *manager;
 
@@ -1252,22 +1252,30 @@ clapper_app_window_constructed (GObject *object)
 #if (CLAPPER_HAVE_MPRIS || CLAPPER_HAVE_SERVER || CLAPPER_HAVE_DISCOVERER)
   ClapperFeature *feature = NULL;
 #endif
-#if CLAPPER_HAVE_MPRIS
+
   gchar mpris_name[45];
   g_snprintf (mpris_name, sizeof (mpris_name),
       "org.mpris.MediaPlayer2.Clapper.instance%" G_GUINT16_FORMAT, instance_count++);
-#endif
 
   self->settings = g_settings_new (CLAPPER_APP_ID);
   self->last_volume = PERCENTAGE_ROUND (g_settings_get_double (self->settings, "volume"));
 
+  if ((proxy = clapper_enhancer_proxy_list_get_proxy_by_module (proxies, "clapper-mpris"))) {
+    clapper_enhancer_proxy_set_locally (proxy,
+        "own-name", mpris_name,
+        "identity", CLAPPER_APP_NAME,
+        "desktop-entry", CLAPPER_APP_ID,
+        "queue-controllable", TRUE, NULL);
+    gst_object_unref (proxy);
+  } else {
 #if CLAPPER_HAVE_MPRIS
-  feature = CLAPPER_FEATURE (clapper_mpris_new (
-      mpris_name, CLAPPER_APP_NAME, CLAPPER_APP_ID));
-  clapper_mpris_set_queue_controllable (CLAPPER_MPRIS (feature), TRUE);
-  clapper_player_add_feature (player, feature);
-  gst_object_unref (feature);
+    feature = CLAPPER_FEATURE (clapper_mpris_new (
+        mpris_name, CLAPPER_APP_NAME, CLAPPER_APP_ID));
+    clapper_mpris_set_queue_controllable (CLAPPER_MPRIS (feature), TRUE);
+    clapper_player_add_feature (player, feature);
+    gst_object_unref (feature);
 #endif
+  }
 
 #if CLAPPER_HAVE_SERVER
   feature = CLAPPER_FEATURE (clapper_server_new ());

src/bin/clapper-app/main.c

@@ -31,8 +31,10 @@
 gint
 main (gint argc, gchar **argv)
 {
-  const gchar *clapper_ldir;
   GApplication *application;
+  ClapperEnhancerProxyList *proxies;
+  const gchar *clapper_ldir;
+  guint i, n_proxies;
   gint status;
 
 #ifdef G_OS_WIN32
@@ -64,6 +66,15 @@ main (gint argc, gchar **argv)
   resolution = clapper_app_utils_win_hi_res_clock_start ();
 #endif
 
+  proxies = clapper_get_global_enhancer_proxies ();
+  n_proxies = clapper_enhancer_proxy_list_get_n_proxies (proxies);
+
+  /* Allow usage of all enhancers */
+  for (i = 0; i < n_proxies; ++i) {
+    ClapperEnhancerProxy *proxy = clapper_enhancer_proxy_list_peek_proxy (proxies, i);
+    clapper_enhancer_proxy_set_target_creation_allowed (proxy, TRUE);
+  }
+
   application = clapper_app_application_new ();
 
   status = g_application_run (application, argc, argv);

src/bin/clapper-app/meson.build

@@ -105,6 +105,9 @@ if not pp_option.disabled()
   if cgraph_dep.found() and gvc_dep.found()
     clapperapp_c_args += ['-DHAVE_GRAPHVIZ']
     clapperapp_deps += [cgraph_dep, gvc_dep]
+    if gvc_dep.version().version_compare('>= 13.0.0')
+      clapperapp_c_args += ['-DHAVE_GVC_13']
+    endif
     clapperapp_available_functionalities += 'pipeline-preview'
   elif pp_option.enabled()
     error('pipeline-preview option was enabled, but required dependencies were not found')

src/lib/clapper-gtk/clapper-gtk-billboard.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-billboard.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-buffering-animation-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-buffering-animation.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include <clapper/clapper.h>

src/lib/clapper-gtk/clapper-gtk-buffering-paintable-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-buffering-paintable.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "clapper-gtk-buffering-paintable-private.h"

src/lib/clapper-gtk/clapper-gtk-container-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-container.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-container.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-enums.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-extra-menu-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-extra-menu-button.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-lead-container.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-lead-container.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-limited-layout-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-limited-layout.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include <clapper/clapper.h>

src/lib/clapper-gtk/clapper-gtk-next-item-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-next-item-button.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-previous-item-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-previous-item-button.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-seek-bar.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -396,6 +395,47 @@ _update_duration_label (ClapperGtkSeekBar *self, gdouble duration)
   gtk_adjustment_set_upper (adjustment, duration);
 }
 
+static gboolean
+_find_marks_in_widget (GtkWidget *widget, GtkWidget **top_marks, GtkWidget **bottom_marks)
+{
+  GtkWidget *child;
+
+  if (g_strcmp0 (gtk_widget_get_css_name (widget), "marks") == 0) {
+    if (gtk_widget_has_css_class (widget, "top"))
+      *top_marks = widget;
+    else if (gtk_widget_has_css_class (widget, "bottom"))
+      *bottom_marks = widget;
+
+    /* Its unexpected to have marks within marks,
+     * so do not iterate children of marks widget */
+    return (*top_marks && *bottom_marks);
+  }
+
+  child = gtk_widget_get_first_child (widget);
+
+  while (child != NULL) {
+    if (_find_marks_in_widget (child, top_marks, bottom_marks))
+      return TRUE;
+
+    child = gtk_widget_get_next_sibling (child);
+  }
+
+  return FALSE;
+}
+
+static gboolean
+_find_last_mark_in_marks (GtkWidget *marks, GtkWidget **last_mark)
+{
+  GtkWidget *widget = gtk_widget_get_last_child (marks);
+
+  if (widget && g_strcmp0 (gtk_widget_get_css_name (widget), "mark") == 0) {
+    *last_mark = widget;
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
 static void
 _update_scale_marks (ClapperGtkSeekBar *self, ClapperTimeline *timeline)
 {
@@ -424,11 +464,43 @@ _update_scale_marks (ClapperGtkSeekBar *self, ClapperTimeline *timeline)
 
   for (i = 0; i < n_markers; ++i) {
     ClapperMarker *marker = clapper_timeline_get_marker (timeline, i);
+    ClapperMarkerType marker_type = clapper_marker_get_marker_type (marker);
     gdouble start = clapper_marker_get_start (marker);
 
     gtk_scale_add_mark (GTK_SCALE (self->scale), start, GTK_POS_TOP, NULL);
     gtk_scale_add_mark (GTK_SCALE (self->scale), start, GTK_POS_BOTTOM, NULL);
 
+    if (marker_type >= CLAPPER_MARKER_TYPE_CUSTOM_1) {
+      GtkWidget *top_marks = NULL, *bottom_marks = NULL;
+      GtkWidget *top_mark = NULL, *bottom_mark = NULL;
+
+      if (_find_marks_in_widget (self->scale, &top_marks, &bottom_marks)
+          && _find_last_mark_in_marks (top_marks, &top_mark)
+          && _find_last_mark_in_marks (bottom_marks, &bottom_mark)) {
+        const gchar *custom_name;
+
+        switch (marker_type) {
+          case CLAPPER_MARKER_TYPE_CUSTOM_1:
+            custom_name = "custom1";
+            break;
+          case CLAPPER_MARKER_TYPE_CUSTOM_2:
+            custom_name = "custom2";
+            break;
+          case CLAPPER_MARKER_TYPE_CUSTOM_3:
+            custom_name = "custom3";
+            break;
+          default:
+            custom_name = NULL;
+            break;
+        }
+
+        if (G_LIKELY (custom_name != NULL)) {
+          gtk_widget_add_css_class (top_mark, custom_name);
+          gtk_widget_add_css_class (bottom_mark, custom_name);
+        }
+      }
+    }
+
     gst_object_unref (marker);
   }
 

src/lib/clapper-gtk/clapper-gtk-seek-bar.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-simple-controls.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-simple-controls.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-status-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-status.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"

src/lib/clapper-gtk/clapper-gtk-stream-check-button-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-stream-check-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"

src/lib/clapper-gtk/clapper-gtk-title-header.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-title-header.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-title-label.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-title-label.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-toggle-fullscreen-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-toggle-fullscreen-button.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-toggle-play-button.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-toggle-play-button.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-utils-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-utils.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"

src/lib/clapper-gtk/clapper-gtk-utils.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-version.h.in

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-video-placeholder-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk-video-placeholder.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"

src/lib/clapper-gtk/clapper-gtk-video.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper-gtk/clapper-gtk-video.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/clapper-gtk.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper-gtk/css/styles.css

@@ -129,6 +129,15 @@ clapper-gtk-seek-bar label {
   margin-left: 2px;
   margin-right: 2px;
 }
+clapper-gtk-seek-bar scale marks .custom1 indicator {
+  color: tomato;
+}
+clapper-gtk-seek-bar scale marks .custom2 indicator {
+  color: goldenrod;
+}
+clapper-gtk-seek-bar scale marks .custom3 indicator {
+  color: limegreen;
+}
 
 clapper-gtk-extra-menu-button popover .spinsidebutton {
   min-width: 28px;

src/lib/clapper/clapper-app-bus-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -45,6 +44,8 @@ void clapper_app_bus_post_refresh_streams (ClapperAppBus *app_bus, GstObject *sr
 
 void clapper_app_bus_post_refresh_timeline (ClapperAppBus *app_bus, GstObject *src);
 
+void clapper_app_bus_post_insert_playlist (ClapperAppBus *app_bus, GstObject *src, GstObject *playlist_item, GObject *playlist);
+
 void clapper_app_bus_post_simple_signal (ClapperAppBus *app_bus, GstObject *src, guint signal_id);
 
 void clapper_app_bus_post_object_desc_signal (ClapperAppBus *app_bus, GstObject *src, guint signal_id, GstObject *object, const gchar *desc);

src/lib/clapper/clapper-app-bus.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include <gio/gio.h>
@@ -22,6 +21,7 @@
 #include "clapper-bus-private.h"
 #include "clapper-app-bus-private.h"
 #include "clapper-player-private.h"
+#include "clapper-queue-private.h"
 #include "clapper-media-item-private.h"
 #include "clapper-timeline-private.h"
 
@@ -42,6 +42,7 @@ enum
   CLAPPER_APP_BUS_STRUCTURE_PROP_NOTIFY,
   CLAPPER_APP_BUS_STRUCTURE_REFRESH_STREAMS,
   CLAPPER_APP_BUS_STRUCTURE_REFRESH_TIMELINE,
+  CLAPPER_APP_BUS_STRUCTURE_INSERT_PLAYLIST,
   CLAPPER_APP_BUS_STRUCTURE_SIMPLE_SIGNAL,
   CLAPPER_APP_BUS_STRUCTURE_OBJECT_DESC_SIGNAL,
   CLAPPER_APP_BUS_STRUCTURE_DESC_WITH_DETAILS_SIGNAL,
@@ -53,6 +54,7 @@ static ClapperBusQuark _structure_quarks[] = {
   {"prop-notify", 0},
   {"refresh-streams", 0},
   {"refresh-timeline", 0},
+  {"insert-playlist", 0},
   {"simple-signal", 0},
   {"object-desc-signal", 0},
   {"desc-with-details-signal", 0},
@@ -66,6 +68,7 @@ enum
   CLAPPER_APP_BUS_FIELD_PSPEC,
   CLAPPER_APP_BUS_FIELD_SIGNAL_ID,
   CLAPPER_APP_BUS_FIELD_OBJECT,
+  CLAPPER_APP_BUS_FIELD_OTHER_OBJECT,
   CLAPPER_APP_BUS_FIELD_DESC,
   CLAPPER_APP_BUS_FIELD_DETAILS,
   CLAPPER_APP_BUS_FIELD_ERROR,
@@ -77,6 +80,7 @@ static ClapperBusQuark _field_quarks[] = {
   {"pspec", 0},
   {"signal-id", 0},
   {"object", 0},
+  {"other-object", 0},
   {"desc", 0},
   {"details", 0},
   {"error", 0},
@@ -161,6 +165,36 @@ _handle_refresh_timeline_msg (GstMessage *msg, const GstStructure *structure)
   clapper_timeline_refresh (timeline);
 }
 
+void
+clapper_app_bus_post_insert_playlist (ClapperAppBus *self, GstObject *src,
+    GstObject *playlist_item, GObject *playlist)
+{
+  GstStructure *structure = gst_structure_new_id (_STRUCTURE_QUARK (INSERT_PLAYLIST),
+      _FIELD_QUARK (OBJECT), GST_TYPE_OBJECT, playlist_item,
+      _FIELD_QUARK (OTHER_OBJECT), G_TYPE_OBJECT, playlist,
+      NULL);
+  gst_bus_post (GST_BUS_CAST (self), gst_message_new_application (src, structure));
+}
+
+static inline void
+_handle_insert_playlist_msg (GstMessage *msg, const GstStructure *structure)
+{
+  ClapperPlayer *player = CLAPPER_PLAYER_CAST (GST_MESSAGE_SRC (msg));
+  ClapperQueue *queue = clapper_player_get_queue (player);
+  GstObject *playlist_item;
+  GObject *playlist;
+
+  gst_structure_id_get (structure,
+      _FIELD_QUARK (OBJECT), GST_TYPE_OBJECT, &playlist_item,
+      _FIELD_QUARK (OTHER_OBJECT), G_TYPE_OBJECT, &playlist,
+      NULL);
+  clapper_queue_handle_playlist (queue,
+      CLAPPER_MEDIA_ITEM (playlist_item), G_LIST_STORE (playlist));
+
+  gst_object_unref (playlist_item);
+  g_object_unref (playlist);
+}
+
 void
 clapper_app_bus_post_simple_signal (ClapperAppBus *self, GstObject *src, guint signal_id)
 {
@@ -286,6 +320,8 @@ clapper_app_bus_message_func (GstBus *bus, GstMessage *msg, gpointer user_data G
       _handle_refresh_streams_msg (msg, structure);
     else if (quark == _STRUCTURE_QUARK (REFRESH_TIMELINE))
       _handle_refresh_timeline_msg (msg, structure);
+    else if (quark == _STRUCTURE_QUARK (INSERT_PLAYLIST))
+      _handle_insert_playlist_msg (msg, structure);
     else if (quark == _STRUCTURE_QUARK (SIMPLE_SIGNAL))
       _handle_simple_signal_msg (msg, structure);
     else if (quark == _STRUCTURE_QUARK (OBJECT_DESC_SIGNAL))

src/lib/clapper/clapper-audio-stream-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-audio-stream.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper/clapper-audio-stream.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-basic-functions.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
@@ -29,6 +28,7 @@
 #include "clapper-app-bus-private.h"
 #include "clapper-features-bus-private.h"
 #include "clapper-enhancer-proxy-list-private.h"
+#include "clapper-reactables-manager-private.h"
 #include "gst/clapper-plugin-private.h"
 
 #include "clapper-functionalities-availability.h"
@@ -56,6 +56,7 @@ clapper_init_check_internal (int *argc, char **argv[])
   clapper_playbin_bus_initialize ();
   clapper_app_bus_initialize ();
   clapper_features_bus_initialize ();
+  clapper_reactables_manager_initialize ();
 
   _proxies = clapper_enhancer_proxy_list_new_named ("global-proxy-list");
 

src/lib/clapper/clapper-basic-functions.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-bus-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-cache-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-cache.c

@@ -12,20 +12,24 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "clapper-cache-private.h"
 #include "clapper-version.h"
+
 #include "clapper-extractable.h"
+#include "clapper-playlistable.h"
+#include "clapper-reactable.h"
 
 #define CLAPPER_CACHE_HEADER "CLAPPER"
 
 typedef enum
 {
   CLAPPER_CACHE_IFACE_EXTRACTABLE = 1,
+  CLAPPER_CACHE_IFACE_PLAYLISTABLE,
+  CLAPPER_CACHE_IFACE_REACTABLE,
 } ClapperCacheIfaces;
 
 static GArray *enum_registry = NULL;
@@ -243,6 +247,10 @@ clapper_cache_read_iface (const gchar **data)
   switch (iface_id) {
     case CLAPPER_CACHE_IFACE_EXTRACTABLE:
       return CLAPPER_TYPE_EXTRACTABLE;
+    case CLAPPER_CACHE_IFACE_PLAYLISTABLE:
+      return CLAPPER_TYPE_PLAYLISTABLE;
+    case CLAPPER_CACHE_IFACE_REACTABLE:
+      return CLAPPER_TYPE_REACTABLE;
     default:
       return 0;
   }
@@ -433,6 +441,10 @@ clapper_cache_store_iface (GByteArray *bytes, GType iface)
 
   if (iface == CLAPPER_TYPE_EXTRACTABLE)
     iface_id = CLAPPER_CACHE_IFACE_EXTRACTABLE;
+  else if (iface == CLAPPER_TYPE_PLAYLISTABLE)
+    iface_id = CLAPPER_CACHE_IFACE_PLAYLISTABLE;
+  else if (iface == CLAPPER_TYPE_REACTABLE)
+    iface_id = CLAPPER_CACHE_IFACE_REACTABLE;
   else
     return FALSE;
 

src/lib/clapper/clapper-enhancer-proxy-list-private.h

@@ -12,14 +12,14 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
 
 #include <glib.h>
+#include <glib-object.h>
 
 #include "clapper-enhancer-proxy-list.h"
 #include "clapper-enhancer-proxy.h"
@@ -38,4 +38,7 @@ void clapper_enhancer_proxy_list_fill_from_global_proxies (ClapperEnhancerProxyL
 G_GNUC_INTERNAL
 void clapper_enhancer_proxy_list_sort (ClapperEnhancerProxyList *list);
 
+G_GNUC_INTERNAL
+gboolean clapper_enhancer_proxy_list_has_proxy_with_interface (ClapperEnhancerProxyList *list, GType iface_type);
+
 G_END_DECLS

src/lib/clapper/clapper-enhancer-proxy-list.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -161,6 +160,29 @@ clapper_enhancer_proxy_list_sort (ClapperEnhancerProxyList *self)
   g_ptr_array_sort_values (self->proxies, (GCompareFunc) _sort_values_by_name);
 }
 
+/*
+ * clapper_enhancer_proxy_list_has_proxy_with_interface:
+ * @iface_type: an interface #GType
+ *
+ * Check if any enhancer implementing given interface type is available.
+ *
+ * Returns: whether any enhancer proxy was found.
+ */
+gboolean
+clapper_enhancer_proxy_list_has_proxy_with_interface (ClapperEnhancerProxyList *self, GType iface_type)
+{
+  guint i;
+
+  for (i = 0; i < self->proxies->len; ++i) {
+    ClapperEnhancerProxy *proxy = clapper_enhancer_proxy_list_peek_proxy (self, i);
+
+    if (clapper_enhancer_proxy_target_has_interface (proxy, iface_type))
+      return TRUE;
+  }
+
+  return FALSE;
+}
+
 /**
  * clapper_enhancer_proxy_list_get_proxy:
  * @list: a #ClapperEnhancerProxyList

src/lib/clapper/clapper-enhancer-proxy-list.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-enhancer-proxy-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -45,6 +44,9 @@ void clapper_enhancer_proxy_export_to_cache (ClapperEnhancerProxy *proxy);
 G_GNUC_INTERNAL
 GObject * clapper_enhancer_proxy_get_peas_info (ClapperEnhancerProxy *proxy);
 
+G_GNUC_INTERNAL
+gboolean clapper_enhancer_proxy_has_locally_set (ClapperEnhancerProxy *proxy, const gchar *property_name);
+
 G_GNUC_INTERNAL
 GstStructure * clapper_enhancer_proxy_make_current_config (ClapperEnhancerProxy *proxy);
 

src/lib/clapper/clapper-enhancer-proxy.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -47,9 +46,14 @@
 #include "clapper-enhancer-proxy-list.h"
 #include "clapper-basic-functions.h"
 #include "clapper-cache-private.h"
-#include "clapper-extractable.h"
+#include "clapper-player-private.h"
+#include "clapper-utils-private.h"
 #include "clapper-enums.h"
 
+#include "clapper-extractable.h"
+#include "clapper-playlistable.h"
+#include "clapper-reactable.h"
+
 #include "clapper-functionalities-availability.h"
 
 #if CLAPPER_WITH_ENHANCERS_LOADER
@@ -84,6 +88,8 @@ struct _ClapperEnhancerProxy
   ClapperEnhancerParamFlags scope;
   GstStructure *local_config;
 
+  gboolean allowed;
+
   /* GSettings are not thread-safe,
    * so store schema instead */
   GSettingsSchema *schema;
@@ -98,6 +104,7 @@ enum
   PROP_MODULE_DIR,
   PROP_DESCRIPTION,
   PROP_VERSION,
+  PROP_TARGET_CREATION_ALLOWED,
   PROP_LAST
 };
 
@@ -213,7 +220,7 @@ clapper_enhancer_proxy_copy (ClapperEnhancerProxy *src_proxy, const gchar *copy_
   copy->pspecs = g_new (GParamSpec *, copy->n_pspecs);
 
   for (i = 0; i < src_proxy->n_pspecs; ++i)
-    copy->pspecs[i] = src_proxy->pspecs[i];
+    copy->pspecs[i] = g_param_spec_ref (src_proxy->pspecs[i]);
 
   copy->scope = CLAPPER_ENHANCER_PARAM_LOCAL;
 
@@ -227,6 +234,8 @@ clapper_enhancer_proxy_copy (ClapperEnhancerProxy *src_proxy, const gchar *copy_
   if (src_proxy->local_config)
     copy->local_config = gst_structure_copy (src_proxy->local_config);
 
+  copy->allowed = src_proxy->allowed;
+
   GST_OBJECT_UNLOCK (src_proxy);
 
   gst_object_ref_sink (copy);
@@ -357,6 +366,8 @@ clapper_enhancer_proxy_fill_from_cache (ClapperEnhancerProxy *self)
       if (G_UNLIKELY ((self->ifaces[i] = clapper_cache_read_iface (&data)) == 0))
         goto abort_reading;
     }
+    /* Reactable type is always last */
+    self->allowed = (self->ifaces[self->n_ifaces - 1] != CLAPPER_TYPE_REACTABLE);
   }
 
   /* Restore ParamSpecs */
@@ -454,7 +465,8 @@ clapper_enhancer_proxy_export_to_cache (ClapperEnhancerProxy *self)
 gboolean
 clapper_enhancer_proxy_fill_from_instance (ClapperEnhancerProxy *self, GObject *enhancer)
 {
-  GType enhancer_types[1] = { CLAPPER_TYPE_EXTRACTABLE };
+  /* NOTE: REACTABLE must be last for "allowed" to work as expected */
+  const GType enhancer_types[] = { CLAPPER_TYPE_EXTRACTABLE, CLAPPER_TYPE_PLAYLISTABLE, CLAPPER_TYPE_REACTABLE };
   GType *ifaces;
   GParamSpec **pspecs;
   GParamFlags enhancer_flags;
@@ -463,9 +475,12 @@ clapper_enhancer_proxy_fill_from_instance (ClapperEnhancerProxy *self, GObject *
   /* Filter to only Clapper interfaces */
   ifaces = g_type_interfaces (G_OBJECT_TYPE (enhancer), &n);
   for (i = 0; i < n; ++i) {
-    for (j = 0; j < G_N_ELEMENTS (enhancer_types); ++j) {
+    const guint n_types = G_N_ELEMENTS (enhancer_types);
+
+    for (j = 0; j < n_types; ++j) {
       if (ifaces[i] == enhancer_types[j]) {
         ifaces[write_index++] = ifaces[i];
+        self->allowed = (j < n_types - 1);
         break; // match found, do next iface
       }
     }
@@ -500,6 +515,18 @@ clapper_enhancer_proxy_get_peas_info (ClapperEnhancerProxy *self)
   return self->peas_info;
 }
 
+gboolean
+clapper_enhancer_proxy_has_locally_set (ClapperEnhancerProxy *self, const gchar *property_name)
+{
+  gboolean has_field;
+
+  GST_OBJECT_LOCK (self);
+  has_field = (self->local_config && gst_structure_has_field (self->local_config, property_name));
+  GST_OBJECT_UNLOCK (self);
+
+  return has_field;
+}
+
 static gboolean
 _apply_config_cb (GQuark field_id, const GValue *value, GObject *enhancer)
 {
@@ -527,6 +554,7 @@ clapper_enhancer_proxy_make_current_config (ClapperEnhancerProxy *self)
 
     /* Using "has_field", as set value might be %NULL */
     if ((pspec->flags & CLAPPER_ENHANCER_PARAM_LOCAL)
+        && self->local_config
         && gst_structure_has_field (self->local_config, pspec->name)) {
       if (!merged_config)
         merged_config = gst_structure_new_empty (CONFIG_STRUCTURE_NAME);
@@ -540,44 +568,13 @@ clapper_enhancer_proxy_make_current_config (ClapperEnhancerProxy *self)
       GVariant *def = g_settings_get_default_value (settings, pspec->name);
 
       if (!g_variant_equal (val, def)) {
-        if (!merged_config)
-          merged_config = gst_structure_new_empty (CONFIG_STRUCTURE_NAME);
+        GValue value = G_VALUE_INIT;
 
-        switch (pspec->value_type) {
-          case G_TYPE_BOOLEAN:
-            gst_structure_set (merged_config, pspec->name,
-                pspec->value_type, g_variant_get_boolean (val), NULL);
-            break;
-          case G_TYPE_INT:
-            gst_structure_set (merged_config, pspec->name,
-                pspec->value_type, g_variant_get_int32 (val), NULL);
-            break;
-          case G_TYPE_UINT:
-            gst_structure_set (merged_config, pspec->name,
-                pspec->value_type, g_variant_get_uint32 (val), NULL);
-            break;
-          case G_TYPE_DOUBLE:
-            gst_structure_set (merged_config, pspec->name,
-                pspec->value_type, g_variant_get_double (val), NULL);
-            break;
-          case G_TYPE_STRING:
-            gst_structure_set (merged_config, pspec->name,
-                pspec->value_type, g_variant_get_string (val, NULL), NULL);
-            break;
-          default:{
-            if (G_IS_PARAM_SPEC_ENUM (pspec)) {
-              gst_structure_set (merged_config, pspec->name,
-                  G_TYPE_INT, g_variant_get_int32 (val), NULL);
-              break;
-            } else if (G_IS_PARAM_SPEC_FLAGS (pspec)) {
-              gst_structure_set (merged_config, pspec->name,
-                  G_TYPE_UINT, g_variant_get_uint32 (val), NULL);
-              break;
-            }
-            GST_ERROR_OBJECT (self, "Unsupported enhancer \"%s\" setting type: %s",
-                pspec->name, g_type_name (pspec->value_type));
-            break;
-          }
+        if (G_LIKELY (clapper_utils_set_value_from_variant (&value, val))) {
+          if (!merged_config)
+            merged_config = gst_structure_new_empty (CONFIG_STRUCTURE_NAME);
+
+          gst_structure_take_value (merged_config, pspec->name, &value);
         }
       }
 
@@ -706,7 +703,7 @@ clapper_enhancer_proxy_get_version (ClapperEnhancerProxy *self)
  *
  * Get extra data from enhancer plugin info file specified by @key.
  *
- * External data in the plugin info file is prefixed with `X-`.
+ * Extra data in the plugin info file is prefixed with `X-`.
  * For example `X-Schemes=https`.
  *
  * Returns: (nullable): extra data value of the proxied enhancer.
@@ -740,6 +737,10 @@ clapper_enhancer_proxy_get_extra_data (ClapperEnhancerProxy *self, const gchar *
  * calling this function with "X-Schemes" as key and "http" as value will
  * return %TRUE.
  *
+ * It is also safe to call this function when there is no such @key
+ * in plugin info file. Use [method@Clapper.EnhancerProxy.get_extra_data]
+ * if you need to know whether key exists.
+ *
  * Returns: whether list named with @key existed and contained @value.
  *
  * Since: 0.10
@@ -943,6 +944,20 @@ _structure_take_value_by_pspec (ClapperEnhancerProxy *self,
   return FALSE;
 }
 
+static void
+_trigger_reactable_configure_take (ClapperEnhancerProxy *self, GstStructure *structure)
+{
+  ClapperPlayer *player = clapper_player_get_from_ancestor (GST_OBJECT_CAST (self));
+
+  if (G_LIKELY (player != NULL)) {
+    clapper_reactables_manager_trigger_configure_take_config (
+        player->reactables_manager, self, structure);
+    gst_object_unref (player);
+  } else {
+    gst_structure_free (structure);
+  }
+}
+
 /**
  * clapper_enhancer_proxy_set_locally:
  * @proxy: a #ClapperEnhancerProxy
@@ -1013,10 +1028,10 @@ clapper_enhancer_proxy_set_locally (ClapperEnhancerProxy *self, const gchar *fir
 
   _update_local_config_from_structure (self, structure);
 
-  /* TODO: _post_local_config instead of free if managed
-   * (for when managed interfaces are implemented) */
-
-  gst_structure_free (structure);
+  if (clapper_enhancer_proxy_target_has_interface (self, CLAPPER_TYPE_REACTABLE))
+    _trigger_reactable_configure_take (self, structure);
+  else
+    gst_structure_free (structure);
 }
 
 /**
@@ -1080,10 +1095,62 @@ clapper_enhancer_proxy_set_locally_with_table (ClapperEnhancerProxy *self, GHash
 
   _update_local_config_from_structure (self, structure);
 
-  /* TODO: _post_local_config instead of free if managed
-   * (for when managed interfaces are implemented) */
+  if (clapper_enhancer_proxy_target_has_interface (self, CLAPPER_TYPE_REACTABLE))
+    _trigger_reactable_configure_take (self, structure);
+  else
+    gst_structure_free (structure);
+}
 
-  gst_structure_free (structure);
+/**
+ * clapper_enhancer_proxy_set_target_creation_allowed:
+ * @proxy: a #ClapperEnhancerProxy
+ * @allowed: whether allowed
+ *
+ * Set whether to allow instances of proxy target to be created.
+ *
+ * See [property@Clapper.EnhancerProxy:target-creation-allowed] for
+ * detailed descripton what this does.
+ *
+ * Since: 0.10
+ */
+void
+clapper_enhancer_proxy_set_target_creation_allowed (ClapperEnhancerProxy *self, gboolean allowed)
+{
+  gboolean changed;
+
+  g_return_if_fail (CLAPPER_IS_ENHANCER_PROXY (self));
+
+  GST_OBJECT_LOCK (self);
+  if ((changed = self->allowed != allowed))
+    self->allowed = allowed;
+  GST_OBJECT_UNLOCK (self);
+
+  if (changed)
+    g_object_notify_by_pspec (G_OBJECT (self), param_specs[PROP_TARGET_CREATION_ALLOWED]);
+}
+
+/**
+ * clapper_enhancer_proxy_get_target_creation_allowed:
+ * @proxy: a #ClapperEnhancerProxy
+ *
+ * Get whether it is allowed to create instances of enhancer that this proxy targets.
+ *
+ * Returns: whether target creation is allowed.
+ *
+ * Since: 0.10
+ */
+gboolean
+clapper_enhancer_proxy_get_target_creation_allowed (ClapperEnhancerProxy *self)
+{
+  gboolean allowed;
+
+  g_return_val_if_fail (CLAPPER_IS_ENHANCER_PROXY (self), FALSE);
+
+  GST_OBJECT_LOCK (self);
+  allowed = self->allowed;
+  GST_OBJECT_UNLOCK (self);
+
+  return allowed;
 }
 
 static void
@@ -1135,6 +1202,25 @@ clapper_enhancer_proxy_get_property (GObject *object, guint prop_id,
     case PROP_VERSION:
       g_value_set_string (value, clapper_enhancer_proxy_get_version (self));
       break;
+    case PROP_TARGET_CREATION_ALLOWED:
+      g_value_set_boolean (value, clapper_enhancer_proxy_get_target_creation_allowed (self));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+clapper_enhancer_proxy_set_property (GObject *object, guint prop_id,
+    const GValue *value, GParamSpec *pspec)
+{
+  ClapperEnhancerProxy *self = CLAPPER_ENHANCER_PROXY_CAST (object);
+
+  switch (prop_id) {
+    case PROP_TARGET_CREATION_ALLOWED:
+      clapper_enhancer_proxy_set_target_creation_allowed (self, g_value_get_boolean (value));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -1150,6 +1236,7 @@ clapper_enhancer_proxy_class_init (ClapperEnhancerProxyClass *klass)
       "Clapper Enhancer Proxy");
 
   gobject_class->get_property = clapper_enhancer_proxy_get_property;
+  gobject_class->set_property = clapper_enhancer_proxy_set_property;
   gobject_class->finalize = clapper_enhancer_proxy_finalize;
 
   /**
@@ -1207,5 +1294,29 @@ clapper_enhancer_proxy_class_init (ClapperEnhancerProxyClass *klass)
       NULL, NULL, NULL,
       G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
 
+  /**
+   * ClapperEnhancerProxy:target-creation-allowed:
+   *
+   * Whether to allow instances of proxy target to be created.
+   *
+   * This effectively means whether the given enhancer can be used.
+   *
+   * By default all enhancers that work on-demand ([iface@Clapper.Extractable], [iface@Clapper.Playlistable])
+   * are allowed while enhancers implementing [iface@Clapper.Reactable] are not.
+   *
+   * Value of this property from a `GLOBAL` [class@Clapper.EnhancerProxyList] will carry
+   * over to all newly created [class@Clapper.Player] objects, while altering this on
+   * `LOCAL` proxy list will only influence given player instance that list belongs to.
+   *
+   * Changing this property will not remove already created enhancer instances, thus
+   * it is usually best practice to allow/disallow creation of given enhancer plugin
+   * right after [class@Clapper.Player] is created (before it or its queue are used).
+   *
+   * Since: 0.10
+   */
+  param_specs[PROP_TARGET_CREATION_ALLOWED] = g_param_spec_boolean ("target-creation-allowed",
+      NULL, NULL, FALSE,
+      G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
   g_object_class_install_properties (gobject_class, PROP_LAST, param_specs);
 }

src/lib/clapper/clapper-enhancer-proxy.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -77,4 +76,10 @@ void clapper_enhancer_proxy_set_locally (ClapperEnhancerProxy *proxy, const gcha
 CLAPPER_API
 void clapper_enhancer_proxy_set_locally_with_table (ClapperEnhancerProxy *proxy, GHashTable *table);
 
+CLAPPER_API
+void clapper_enhancer_proxy_set_target_creation_allowed (ClapperEnhancerProxy *proxy, gboolean allowed);
+
+CLAPPER_API
+gboolean clapper_enhancer_proxy_get_target_creation_allowed (ClapperEnhancerProxy *proxy);
+
 G_END_DECLS

src/lib/clapper/clapper-enhancers-loader-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-enhancers-loader.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "config.h"
@@ -33,6 +32,8 @@ static HMODULE _enhancers_dll_handle = NULL;
 
 // Supported interfaces
 #include "clapper-extractable.h"
+#include "clapper-playlistable.h"
+#include "clapper-reactable.h"
 
 #define GST_CAT_DEFAULT clapper_enhancers_loader_debug
 GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
@@ -52,6 +53,28 @@ _import_enhancers (const gchar *enhancers_path)
   g_strfreev (dir_paths);
 }
 
+static GObject *
+_force_create_enhancer (ClapperEnhancerProxy *proxy, GType iface_type)
+{
+  GObject *enhancer = NULL;
+  PeasPluginInfo *info = (PeasPluginInfo *) clapper_enhancer_proxy_get_peas_info (proxy);
+
+  g_mutex_lock (&load_lock);
+
+  if (!peas_plugin_info_is_loaded (info) && !peas_engine_load_plugin (_engine, info)) {
+    GST_ERROR ("Could not load enhancer: %s", peas_plugin_info_get_module_name (info));
+  } else if (!peas_engine_provides_extension (_engine, info, iface_type)) {
+    GST_LOG ("No \"%s\" enhancer in module: %s", g_type_name (iface_type),
+        peas_plugin_info_get_module_name (info));
+  } else {
+    enhancer = peas_engine_create_extension (_engine, info, iface_type, NULL);
+  }
+
+  g_mutex_unlock (&load_lock);
+
+  return enhancer;
+}
+
 /*
  * clapper_enhancers_loader_initialize:
  *
@@ -118,12 +141,12 @@ clapper_enhancers_loader_initialize (ClapperEnhancerProxyList *proxies)
      * Otherwise make an instance and fill missing data from it (slow). */
     if (!(filled = clapper_enhancer_proxy_fill_from_cache (proxy))) {
       GObject *enhancer;
-      GType main_types[1] = { CLAPPER_TYPE_EXTRACTABLE };
+      const GType main_types[] = { CLAPPER_TYPE_EXTRACTABLE, CLAPPER_TYPE_PLAYLISTABLE, CLAPPER_TYPE_REACTABLE };
       guint j;
 
       /* We cannot ask libpeas for "any" of our main interfaces, so try each one until found */
       for (j = 0; j < G_N_ELEMENTS (main_types); ++j) {
-        if ((enhancer = clapper_enhancers_loader_create_enhancer (proxy, main_types[j]))) {
+        if ((enhancer = _force_create_enhancer (proxy, main_types[j]))) {
           filled = clapper_enhancer_proxy_fill_from_instance (proxy, enhancer);
           g_object_unref (enhancer);
 
@@ -168,21 +191,8 @@ clapper_enhancers_loader_initialize (ClapperEnhancerProxyList *proxies)
 GObject *
 clapper_enhancers_loader_create_enhancer (ClapperEnhancerProxy *proxy, GType iface_type)
 {
-  GObject *enhancer = NULL;
-  PeasPluginInfo *info = (PeasPluginInfo *) clapper_enhancer_proxy_get_peas_info (proxy);
+  if (!clapper_enhancer_proxy_get_target_creation_allowed (proxy))
+    return NULL;
 
-  g_mutex_lock (&load_lock);
-
-  if (!peas_plugin_info_is_loaded (info) && !peas_engine_load_plugin (_engine, info)) {
-    GST_ERROR ("Could not load enhancer: %s", peas_plugin_info_get_module_name (info));
-  } else if (!peas_engine_provides_extension (_engine, info, iface_type)) {
-    GST_LOG ("No \"%s\" enhancer in module: %s", g_type_name (iface_type),
-        peas_plugin_info_get_module_name (info));
-  } else {
-    enhancer = peas_engine_create_extension (_engine, info, iface_type, NULL);
-  }
-
-  g_mutex_unlock (&load_lock);
-
-  return enhancer;
+  return _force_create_enhancer (proxy, iface_type);
 }

src/lib/clapper/clapper-enums-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-enums.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -151,4 +150,23 @@ typedef enum
   CLAPPER_ENHANCER_PARAM_DIRPATH = 1 << 20,
 } ClapperEnhancerParamFlags;
 
+/**
+ * ClapperReactableItemUpdatedFlags:
+ * @CLAPPER_REACTABLE_ITEM_UPDATED_TITLE: Media item title was updated.
+ * @CLAPPER_REACTABLE_ITEM_UPDATED_DURATION: Media item duration was updated.
+ * @CLAPPER_REACTABLE_ITEM_UPDATED_TIMELINE: Media item timeline was updated.
+ * @CLAPPER_REACTABLE_ITEM_UPDATED_TAGS: Media item tags were updated.
+ *
+ * Flags informing which properties were updated within [class@Clapper.MediaItem].
+ *
+ * Since: 0.10
+ */
+typedef enum
+{
+  CLAPPER_REACTABLE_ITEM_UPDATED_TITLE = 1 << 0,
+  CLAPPER_REACTABLE_ITEM_UPDATED_DURATION = 1 << 1,
+  CLAPPER_REACTABLE_ITEM_UPDATED_TIMELINE = 1 << 2,
+  CLAPPER_REACTABLE_ITEM_UPDATED_TAGS = 1 << 3,
+} ClapperReactableItemUpdatedFlags;
+
 G_END_DECLS

src/lib/clapper/clapper-extractable-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-extractable.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper/clapper-extractable.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-feature-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-feature.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -30,6 +29,8 @@
  * virtual functions logic, while for controlling playback implementation
  * may call [method@Gst.Object.get_parent] to acquire a weak reference on
  * a parent [class@Clapper.Player] object feature was added to.
+ *
+ * Deprecated: 0.10: Use [iface@Clapper.Reactable] instead.
  */
 
 #include "clapper-feature.h"

src/lib/clapper/clapper-feature.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -37,7 +36,7 @@ G_BEGIN_DECLS
 #define CLAPPER_TYPE_FEATURE (clapper_feature_get_type())
 #define CLAPPER_FEATURE_CAST(obj) ((ClapperFeature *)(obj))
 
-CLAPPER_API
+CLAPPER_DEPRECATED_FOR(ClapperReactable)
 G_DECLARE_DERIVABLE_TYPE (ClapperFeature, clapper_feature, CLAPPER, FEATURE, GstObject)
 
 /**

src/lib/clapper/clapper-features-bus-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-features-bus.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "clapper-bus-private.h"

src/lib/clapper/clapper-features-manager-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-features-manager.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include "clapper-features-manager-private.h"

src/lib/clapper/clapper-functionalities-availability.h.in

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-harvest-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -30,6 +29,9 @@ G_BEGIN_DECLS
 G_GNUC_INTERNAL
 ClapperHarvest * clapper_harvest_new (void);
 
+G_GNUC_INTERNAL
+void clapper_harvest_set_enhancer_in_caps (ClapperHarvest *harvest, ClapperEnhancerProxy *proxy);
+
 G_GNUC_INTERNAL
 gboolean clapper_harvest_unpack (ClapperHarvest *harvest, GstBuffer **buffer, gsize *buf_size, GstCaps **caps, GstTagList **tags, GstToc **toc, GstStructure **headers);
 

src/lib/clapper/clapper-harvest.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -95,6 +94,13 @@ clapper_harvest_new (void)
   return harvest;
 }
 
+void
+clapper_harvest_set_enhancer_in_caps (ClapperHarvest *self, ClapperEnhancerProxy *proxy)
+{
+  gst_caps_set_simple (self->caps, "enhancer", G_TYPE_STRING,
+      clapper_enhancer_proxy_get_module_name (proxy), NULL);
+}
+
 gboolean
 clapper_harvest_unpack (ClapperHarvest *self,
     GstBuffer **buffer, gsize *buf_size, GstCaps **caps,
@@ -222,7 +228,6 @@ clapper_harvest_fill_from_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
   gchar *filename;
   const gchar *data, *read_str;
   const guint8 *buf_data;
-  guint8 *buf_copy;
   gsize buf_size;
   gint64 epoch_cached, epoch_now = 0;
   gdouble exp_seconds;
@@ -282,10 +287,10 @@ clapper_harvest_fill_from_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
     goto finish;
   }
 
-  /* Read media type */
+  /* Read caps */
   read_str = clapper_cache_read_string (&data);
   if (G_UNLIKELY (read_str == NULL)) {
-    GST_ERROR_OBJECT (self, "Could not read media type from cache file");
+    GST_ERROR_OBJECT (self, "Could not read caps from cache file");
     goto finish;
   }
 
@@ -297,9 +302,12 @@ clapper_harvest_fill_from_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
   }
 
   /* Fill harvest */
-  buf_copy = g_memdup2 (buf_data, buf_size);
-  if (!clapper_harvest_fill (self, read_str, buf_copy, buf_size))
+  if (!(self->caps = gst_caps_from_string (read_str))) {
+    GST_ERROR_OBJECT (self, "Could not construct caps from cache");
     goto finish;
+  }
+  self->buffer = gst_buffer_new_memdup (buf_data, buf_size);
+  self->buf_size = buf_size;
 
   /* Read tags */
   read_str = clapper_cache_read_string (&data);
@@ -333,7 +341,6 @@ clapper_harvest_export_to_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
     const GstStructure *config, GUri *uri)
 {
   GByteArray *bytes;
-  const GstStructure *caps_structure;
   gchar *filename, *temp_str = NULL;
   gboolean data_ok = TRUE;
 
@@ -367,12 +374,13 @@ clapper_harvest_export_to_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
   clapper_cache_store_string (bytes, temp_str); // NULL when no config
   g_clear_pointer (&temp_str, g_free);
 
-  /* Store media type */
-  caps_structure = gst_caps_get_structure (self->caps, 0);
-  if (G_LIKELY (caps_structure != NULL)) {
-    clapper_cache_store_string (bytes, gst_structure_get_name (caps_structure));
+  /* Store caps */
+  temp_str = gst_caps_to_string (self->caps);
+  if (G_LIKELY (temp_str != NULL)) {
+    clapper_cache_store_string (bytes, temp_str);
+    g_clear_pointer (&temp_str, g_free);
   } else {
-    GST_ERROR_OBJECT (self, "Cannot cache empty caps");
+    GST_ERROR_OBJECT (self, "Cannot cache caps");
     data_ok = FALSE;
   }
 
@@ -435,11 +443,15 @@ clapper_harvest_export_to_cache (ClapperHarvest *self, ClapperEnhancerProxy *pro
  *
  * Commonly used media types are:
  *
- *   * `application/dash+xml`
+ *   * `application/dash+xml` - DASH manifest
  *
- *   * `application/x-hls`
+ *   * `application/x-hls` - HLS manifest
  *
- *   * `text/uri-list`
+ *   * `text/x-uri` - direct media URI
+ *
+ *   * `text/uri-list` - playlist of URIs
+ *
+ *   * `application/clapper-playlist` - custom playlist format
  *
  * Returns: %TRUE when filled successfully, %FALSE if taken data was empty.
  *
@@ -460,6 +472,7 @@ clapper_harvest_fill (ClapperHarvest *self, const gchar *media_type, gpointer da
   if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= GST_LEVEL_LOG) {
     gboolean is_printable = (strcmp (media_type, "application/dash+xml") == 0)
         || (strcmp (media_type, "application/x-hls") == 0)
+        || (strcmp (media_type, "text/x-uri") == 0)
         || (strcmp (media_type, "text/uri-list") == 0);
 
     if (is_printable) {

src/lib/clapper/clapper-harvest.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-marker-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-marker.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**

src/lib/clapper/clapper-marker.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-media-item-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -23,7 +22,7 @@
 #include <gst/pbutils/pbutils.h>
 
 #include "clapper-media-item.h"
-#include "clapper-player-private.h"
+#include "clapper-player.h"
 #include "clapper-app-bus-private.h"
 
 G_BEGIN_DECLS
@@ -34,6 +33,9 @@ void clapper_media_item_update_from_tag_list (ClapperMediaItem *item, const GstT
 G_GNUC_INTERNAL
 void clapper_media_item_update_from_discoverer_info (ClapperMediaItem *self, GstDiscovererInfo *info);
 
+G_GNUC_INTERNAL
+gboolean clapper_media_item_update_from_item (ClapperMediaItem *item, ClapperMediaItem *other_item, ClapperPlayer *player);
+
 G_GNUC_INTERNAL
 gboolean clapper_media_item_set_duration (ClapperMediaItem *item, gdouble duration, ClapperAppBus *app_bus);
 

src/lib/clapper/clapper-media-item.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -30,6 +29,7 @@
 #include "clapper-timeline-private.h"
 #include "clapper-player-private.h"
 #include "clapper-playbin-bus-private.h"
+#include "clapper-reactables-manager-private.h"
 #include "clapper-features-manager-private.h"
 #include "clapper-utils-private.h"
 
@@ -43,6 +43,7 @@ struct _ClapperMediaItem
   gchar *uri;
   gchar *suburi;
 
+  GstTagList *tags;
   ClapperTimeline *timeline;
 
   guint id;
@@ -50,12 +51,23 @@ struct _ClapperMediaItem
   gchar *container_format;
   gdouble duration;
 
+  /* Whether using title from URI */
+  gboolean title_is_parsed;
+
+  GSList *redirects;
   gchar *cache_uri;
 
   /* For shuffle */
   gboolean used;
 };
 
+typedef struct
+{
+  ClapperMediaItem *item;
+  gboolean changed;
+  gboolean from_user;
+} ClapperMediaItemTagIterData;
+
 enum
 {
   PROP_0,
@@ -63,6 +75,7 @@ enum
   PROP_URI,
   PROP_SUBURI,
   PROP_CACHE_LOCATION,
+  PROP_TAGS,
   PROP_TITLE,
   PROP_CONTAINER_FORMAT,
   PROP_DURATION,
@@ -111,8 +124,8 @@ clapper_media_item_new (const gchar *uri)
 
   /* FIXME: Set initial container format from file extension parsing */
 
-  GST_TRACE_OBJECT (item, "New media item, ID: %u, URI: %s, title: %s",
-      item->id, item->uri, item->title);
+  GST_TRACE_OBJECT (item, "New media item, ID: %u, URI: \"%s\", title: \"%s\"",
+      item->id, item->uri, GST_STR_NULL (item->title));
 
   return item;
 }
@@ -189,6 +202,12 @@ clapper_media_item_get_id (ClapperMediaItem *self)
   return self->id;
 }
 
+/* FIXME: 1.0:
+ * Consider change to be transfer-full and just return latest data from redirects
+ * list (alternatively expose redirect URI). This should make it possible to work
+ * with enhancers that would benefit from knowledge about URI changes
+ * (e.g "Recall" could read actual media instead of playlist file).
+ */
 /**
  * clapper_media_item_get_uri:
  * @item: a #ClapperMediaItem
@@ -258,27 +277,6 @@ clapper_media_item_get_suburi (ClapperMediaItem *self)
   return suburi;
 }
 
-static gboolean
-clapper_media_item_take_title (ClapperMediaItem *self, gchar *title,
-    ClapperAppBus *app_bus)
-{
-  gboolean changed;
-
-  GST_OBJECT_LOCK (self);
-  if ((changed = g_strcmp0 (self->title, title) != 0)) {
-    g_free (self->title);
-    self->title = title;
-  }
-  GST_OBJECT_UNLOCK (self);
-
-  if (changed)
-    clapper_app_bus_post_prop_notify (app_bus, GST_OBJECT_CAST (self), param_specs[PROP_TITLE]);
-  else
-    g_free (title);
-
-  return changed;
-}
-
 /**
  * clapper_media_item_get_title:
  * @item: a #ClapperMediaItem
@@ -305,25 +303,24 @@ clapper_media_item_get_title (ClapperMediaItem *self)
   return title;
 }
 
-static gboolean
-clapper_media_item_take_container_format (ClapperMediaItem *self, gchar *container_format,
-    ClapperAppBus *app_bus)
+static inline gboolean
+_refresh_tag_prop_unlocked (ClapperMediaItem *self, const gchar *tag,
+    gboolean allow_overwrite, gchar **tag_ptr)
 {
-  gboolean changed;
+  const gchar *string;
 
-  GST_OBJECT_LOCK (self);
-  if ((changed = g_strcmp0 (self->container_format, container_format) != 0)) {
-    g_free (self->container_format);
-    self->container_format = container_format;
-  }
-  GST_OBJECT_UNLOCK (self);
+  if ((*tag_ptr && !allow_overwrite)
+      || !gst_tag_list_peek_string_index (self->tags, tag, 0, &string) // guarantees non-empty string
+      || (g_strcmp0 (*tag_ptr, string) == 0))
+    return FALSE;
 
-  if (changed)
-    clapper_app_bus_post_prop_notify (app_bus, GST_OBJECT_CAST (self), param_specs[PROP_CONTAINER_FORMAT]);
-  else
-    g_free (container_format);
+  GST_LOG_OBJECT (self, "Tag prop \"%s\" update: \"%s\" -> \"%s\"",
+      tag, GST_STR_NULL (*tag_ptr), string);
 
-  return changed;
+  g_free (*tag_ptr);
+  *tag_ptr = g_strdup (string);
+
+  return TRUE;
 }
 
 /**
@@ -333,6 +330,8 @@ clapper_media_item_take_container_format (ClapperMediaItem *self, gchar *contain
  * Get media item container format.
  *
  * Returns: (transfer full) (nullable): media container format.
+ *
+ * Deprecated: 0.10: Get `container-format` from [property@Clapper.MediaItem:tags] instead.
  */
 gchar *
 clapper_media_item_get_container_format (ClapperMediaItem *self)
@@ -389,11 +388,215 @@ clapper_media_item_get_duration (ClapperMediaItem *self)
   return duration;
 }
 
+/**
+ * clapper_media_item_get_tags:
+ * @item: a #ClapperMediaItem
+ *
+ * Get readable list of tags stored in media item.
+ *
+ * Returns: (transfer full): a #GstTagList.
+ *
+ * Since: 0.10
+ */
+GstTagList *
+clapper_media_item_get_tags (ClapperMediaItem *self)
+{
+  GstTagList *tags = NULL;
+
+  g_return_val_if_fail (CLAPPER_IS_MEDIA_ITEM (self), NULL);
+
+  GST_OBJECT_LOCK (self);
+  tags = gst_tag_list_ref (self->tags);
+  GST_OBJECT_UNLOCK (self);
+
+  return tags;
+}
+
+static void
+_tags_replace_func (const GstTagList *tags, const gchar *tag, ClapperMediaItemTagIterData *data)
+{
+  ClapperMediaItem *self = data->item;
+  guint index = 0;
+  gboolean replace = FALSE;
+
+  while (TRUE) {
+    const GValue *old_value = gst_tag_list_get_value_index (self->tags, tag, index);
+    const GValue *new_value = gst_tag_list_get_value_index (tags, tag, index);
+
+    /* Number of old values is the same or greater and
+     * all values until this iteration were the same */
+    if (!new_value)
+      break;
+
+    /* A wild new tag appeared */
+    if (!old_value) {
+      replace = TRUE;
+      break;
+    }
+
+    /* Users can only set non-existing tags */
+    if (data->from_user)
+      break;
+
+    /* Check with tolerance for doubles */
+    if (G_VALUE_TYPE (old_value) == G_TYPE_DOUBLE
+        && G_VALUE_TYPE (new_value) == G_TYPE_DOUBLE) {
+      gdouble old_dbl, new_dbl;
+
+      old_dbl = g_value_get_double (old_value);
+      new_dbl = g_value_get_double (new_value);
+
+      if ((replace = !G_APPROX_VALUE (old_dbl, new_dbl, FLT_EPSILON)))
+        break;
+    } else if (gst_value_compare (old_value, new_value) != GST_VALUE_EQUAL) {
+      replace = TRUE;
+      break;
+    }
+
+    ++index;
+  }
+
+  if (replace) {
+    const GValue *value;
+    index = 0;
+
+    GST_LOG_OBJECT (self, "Replacing \"%s\" tag value", tag);
+
+    /* Ensure writable, but only when replacing something */
+    if (!data->changed) {
+      self->tags = gst_tag_list_make_writable (self->tags);
+      data->changed = TRUE;
+    }
+
+    /* Replace first tag value (so it becomes sole member) */
+    value = gst_tag_list_get_value_index (tags, tag, index);
+    gst_tag_list_add_value (self->tags, GST_TAG_MERGE_REPLACE, tag, value);
+
+    /* Append any remaining tags (so next time we iterate indexes will match) */
+    while ((value = gst_tag_list_get_value_index (tags, tag, ++index)))
+      gst_tag_list_add_value (self->tags, GST_TAG_MERGE_APPEND, tag, value);
+  }
+}
+
+static gboolean
+clapper_media_item_insert_tags_internal (ClapperMediaItem *self, const GstTagList *tags,
+    ClapperAppBus *app_bus, gboolean from_user, ClapperReactableItemUpdatedFlags *flags)
+{
+  ClapperMediaItemTagIterData data;
+  gboolean title_changed = FALSE, cont_changed = FALSE;
+
+  GST_OBJECT_LOCK (self);
+
+  data.item = self;
+  data.changed = FALSE;
+  data.from_user = from_user;
+
+  if (G_LIKELY (tags != self->tags))
+    gst_tag_list_foreach (tags, (GstTagForeachFunc) _tags_replace_func, &data);
+
+  if (data.changed) {
+    *flags |= CLAPPER_REACTABLE_ITEM_UPDATED_TAGS;
+
+    if ((title_changed = _refresh_tag_prop_unlocked (self, GST_TAG_TITLE,
+        (!from_user || self->title_is_parsed), &self->title))) {
+      self->title_is_parsed = FALSE;
+      *flags |= CLAPPER_REACTABLE_ITEM_UPDATED_TITLE;
+    }
+    cont_changed = _refresh_tag_prop_unlocked (self, GST_TAG_CONTAINER_FORMAT,
+        !from_user, &self->container_format);
+  }
+
+  GST_OBJECT_UNLOCK (self);
+
+  if (!data.changed)
+    return FALSE;
+
+  if (app_bus) {
+    GstObject *src = GST_OBJECT_CAST (self);
+
+    clapper_app_bus_post_prop_notify (app_bus, src, param_specs[PROP_TAGS]);
+
+    if (title_changed)
+      clapper_app_bus_post_prop_notify (app_bus, src, param_specs[PROP_TITLE]);
+    if (cont_changed)
+      clapper_app_bus_post_prop_notify (app_bus, src, param_specs[PROP_CONTAINER_FORMAT]);
+  } else {
+    GObject *src = G_OBJECT (self);
+
+    clapper_utils_prop_notify_on_main_sync (src, param_specs[PROP_TAGS]);
+
+    if (title_changed)
+      clapper_utils_prop_notify_on_main_sync (src, param_specs[PROP_TITLE]);
+    if (cont_changed)
+      clapper_utils_prop_notify_on_main_sync (src, param_specs[PROP_CONTAINER_FORMAT]);
+  }
+
+  return TRUE;
+}
+
+/**
+ * clapper_media_item_populate_tags:
+ * @item: a #ClapperMediaItem
+ * @tags: a #GstTagList of GLOBAL scope
+ *
+ * Populate non-existing tags in @item tag list.
+ *
+ * Passed @tags must use [enum@Gst.TagScope.GLOBAL] scope.
+ *
+ * Note that tags are automatically determined during media playback
+ * and those take precedence. This function can be useful if an app can
+ * determine some tags that are not in media metadata or for filling
+ * item with some initial/cached tags to display in UI before playback.
+ *
+ * When a tag already exists in the tag list (was populated) this
+ * function will not overwrite it. If you really need to permanently
+ * override some tags in media, you can use `taginject` element as
+ * player video/audio filter instead.
+ *
+ * Returns: whether at least one tag got updated.
+ *
+ * Since: 0.10
+ */
+gboolean
+clapper_media_item_populate_tags (ClapperMediaItem *self, const GstTagList *tags)
+{
+  ClapperPlayer *player;
+  ClapperAppBus *app_bus = NULL;
+  ClapperReactableItemUpdatedFlags flags = 0;
+  gboolean changed;
+
+  g_return_val_if_fail (CLAPPER_IS_MEDIA_ITEM (self), FALSE);
+  g_return_val_if_fail (tags != NULL, FALSE);
+
+  if (G_UNLIKELY (gst_tag_list_get_scope (tags) != GST_TAG_SCOPE_GLOBAL)) {
+    g_warning ("Cannot populate media item tags using a list with non-global tag scope");
+    return FALSE;
+  }
+
+  if ((player = clapper_player_get_from_ancestor (GST_OBJECT_CAST (self))))
+    app_bus = player->app_bus;
+
+  changed = clapper_media_item_insert_tags_internal (self, tags, app_bus, TRUE, &flags);
+
+  if (changed && player) {
+    ClapperFeaturesManager *features_manager;
+
+    if (player->reactables_manager)
+      clapper_reactables_manager_trigger_item_updated (player->reactables_manager, self, flags);
+    if ((features_manager = clapper_player_get_features_manager (player)))
+      clapper_features_manager_trigger_item_updated (features_manager, self);
+  }
+
+  gst_clear_object (&player);
+
+  return changed;
+}
+
 /**
  * clapper_media_item_get_timeline:
  * @item: a #ClapperMediaItem
  *
- * Get the [class@Clapper.Timeline] assosiated with @item.
+ * Get the [class@Clapper.Timeline] associated with @item.
  *
  * Returns: (transfer none): a #ClapperTimeline of item.
  */
@@ -405,21 +608,6 @@ clapper_media_item_get_timeline (ClapperMediaItem *self)
   return self->timeline;
 }
 
-static gboolean
-clapper_media_item_update_from_container_tags (ClapperMediaItem *self, const GstTagList *tags,
-    ClapperAppBus *app_bus)
-{
-  gchar *string = NULL;
-  gboolean changed = FALSE;
-
-  if (gst_tag_list_get_string (tags, GST_TAG_CONTAINER_FORMAT, &string))
-    changed |= clapper_media_item_take_container_format (self, string, app_bus);
-  if (gst_tag_list_get_string (tags, GST_TAG_TITLE, &string))
-    changed |= clapper_media_item_take_title (self, string, app_bus);
-
-  return changed;
-}
-
 void
 clapper_media_item_update_from_tag_list (ClapperMediaItem *self, const GstTagList *tags,
     ClapperPlayer *player)
@@ -427,11 +615,14 @@ clapper_media_item_update_from_tag_list (ClapperMediaItem *self, const GstTagLis
   GstTagScope scope = gst_tag_list_get_scope (tags);
 
   if (scope == GST_TAG_SCOPE_GLOBAL) {
-    gboolean changed = clapper_media_item_update_from_container_tags (self, tags, player->app_bus);
+    ClapperReactableItemUpdatedFlags flags = 0;
+    gboolean changed = clapper_media_item_insert_tags_internal (self, tags, player->app_bus, FALSE, &flags);
 
     if (changed) {
       ClapperFeaturesManager *features_manager;
 
+      if (player->reactables_manager)
+        clapper_reactables_manager_trigger_item_updated (player->reactables_manager, self, flags);
       if ((features_manager = clapper_player_get_features_manager (player)))
         clapper_features_manager_trigger_item_updated (features_manager, self);
     }
@@ -444,6 +635,7 @@ clapper_media_item_update_from_discoverer_info (ClapperMediaItem *self, GstDisco
   ClapperPlayer *player;
   GstDiscovererStreamInfo *sinfo;
   GstClockTime duration;
+  ClapperReactableItemUpdatedFlags flags = 0;
   gdouble val_dbl;
   gboolean changed = FALSE;
 
@@ -459,7 +651,7 @@ clapper_media_item_update_from_discoverer_info (ClapperMediaItem *self, GstDisco
       GstDiscovererContainerInfo *cinfo = (GstDiscovererContainerInfo *) sinfo;
 
       if ((tags = gst_discoverer_container_info_get_tags (cinfo)))
-        changed |= clapper_media_item_update_from_container_tags (self, tags, player->app_bus);
+        changed |= clapper_media_item_insert_tags_internal (self, tags, player->app_bus, FALSE, &flags);
     }
     gst_discoverer_stream_info_unref (sinfo);
   }
@@ -470,11 +662,16 @@ clapper_media_item_update_from_discoverer_info (ClapperMediaItem *self, GstDisco
     duration = 0;
 
   val_dbl = (gdouble) duration / GST_SECOND;
-  changed |= clapper_media_item_set_duration (self, val_dbl, player->app_bus);
+  if (clapper_media_item_set_duration (self, val_dbl, player->app_bus)) {
+    changed = TRUE;
+    flags |= CLAPPER_REACTABLE_ITEM_UPDATED_DURATION;
+  }
 
   if (changed) {
     ClapperFeaturesManager *features_manager;
 
+    if (player->reactables_manager)
+      clapper_reactables_manager_trigger_item_updated (player->reactables_manager, self, flags);
     if ((features_manager = clapper_player_get_features_manager (player)))
       clapper_features_manager_trigger_item_updated (features_manager, self);
   }
@@ -482,6 +679,61 @@ clapper_media_item_update_from_discoverer_info (ClapperMediaItem *self, GstDisco
   gst_object_unref (player);
 }
 
+/* XXX: Must be set from player thread */
+static inline gboolean
+clapper_media_item_set_redirect_uri (ClapperMediaItem *self, const gchar *redirect_uri)
+{
+  /* Check if we did not already redirect into that URI (prevent endless loop) */
+  if (!redirect_uri || g_slist_find_custom (self->redirects, redirect_uri, (GCompareFunc) strcmp))
+    return FALSE;
+
+  self->redirects = g_slist_prepend (self->redirects, g_strdup (redirect_uri));
+  GST_DEBUG_OBJECT (self, "Set redirect URI: \"%s\"", (gchar *) self->redirects->data);
+
+  return TRUE;
+}
+
+gboolean
+clapper_media_item_update_from_item (ClapperMediaItem *self, ClapperMediaItem *other_item,
+    ClapperPlayer *player)
+{
+  gboolean title_changed = FALSE;
+
+  if (!clapper_media_item_set_redirect_uri (self, clapper_media_item_get_uri (other_item)))
+    return FALSE;
+
+  GST_OBJECT_LOCK (other_item);
+
+  if (other_item->tags)
+    clapper_media_item_update_from_tag_list (self, other_item->tags, player);
+
+  /* Since its redirect now, we have to update title to describe new file instead of
+   * being a playlist title. If other item had parsed title, it also means that tags
+   * did not contain it, thus we have to manually update it and notify. */
+  if (other_item->title_is_parsed) {
+    GST_OBJECT_LOCK (self);
+    title_changed = g_set_str (&self->title, other_item->title);
+    self->title_is_parsed = TRUE;
+    GST_OBJECT_UNLOCK (self);
+  }
+
+  GST_OBJECT_UNLOCK (other_item);
+
+  if (title_changed) {
+    ClapperReactableItemUpdatedFlags flags = CLAPPER_REACTABLE_ITEM_UPDATED_TITLE;
+    ClapperFeaturesManager *features_manager;
+
+    clapper_app_bus_post_prop_notify (player->app_bus, GST_OBJECT_CAST (self), param_specs[PROP_TITLE]);
+
+    if (player->reactables_manager)
+      clapper_reactables_manager_trigger_item_updated (player->reactables_manager, self, flags);
+    if ((features_manager = clapper_player_get_features_manager (player)))
+      clapper_features_manager_trigger_item_updated (features_manager, self);
+  }
+
+  return TRUE;
+}
+
 /* XXX: Must be set from player thread or upon construction */
 void
 clapper_media_item_set_cache_location (ClapperMediaItem *self, const gchar *location)
@@ -496,7 +748,7 @@ clapper_media_item_set_cache_location (ClapperMediaItem *self, const gchar *loca
 }
 
 /* XXX: Can only be read from player thread.
- * Returns cache URI if available, item URI otherwise. */
+ * Returns cache URI if available, otherwise redirect or item URI. */
 inline const gchar *
 clapper_media_item_get_playback_uri (ClapperMediaItem *self)
 {
@@ -516,6 +768,9 @@ clapper_media_item_get_playback_uri (ClapperMediaItem *self)
     clapper_media_item_set_cache_location (self, NULL);
   }
 
+  if (self->redirects)
+    return self->redirects->data;
+
   return self->uri;
 }
 
@@ -542,6 +797,9 @@ clapper_media_item_get_used (ClapperMediaItem *self)
 static void
 clapper_media_item_init (ClapperMediaItem *self)
 {
+  self->tags = gst_tag_list_new_empty ();
+  gst_tag_list_set_scope (self->tags, GST_TAG_SCOPE_GLOBAL);
+
   self->timeline = clapper_timeline_new ();
   gst_object_set_parent (GST_OBJECT_CAST (self->timeline), GST_OBJECT_CAST (self));
 }
@@ -556,6 +814,7 @@ clapper_media_item_constructed (GObject *object)
     self->uri = g_strdup ("file://");
 
   self->title = clapper_utils_title_from_uri (self->uri);
+  self->title_is_parsed = (self->title != NULL);
 
   G_OBJECT_CLASS (parent_class)->constructed (object);
 }
@@ -571,9 +830,12 @@ clapper_media_item_finalize (GObject *object)
   g_free (self->title);
   g_free (self->container_format);
 
+  gst_tag_list_unref (self->tags);
+
   gst_object_unparent (GST_OBJECT_CAST (self->timeline));
   gst_object_unref (self->timeline);
 
+  g_slist_free_full (self->redirects, g_free);
   g_free (self->cache_uri);
 
   G_OBJECT_CLASS (parent_class)->finalize (object);
@@ -617,6 +879,9 @@ clapper_media_item_get_property (GObject *object, guint prop_id,
     case PROP_SUBURI:
       g_value_take_string (value, clapper_media_item_get_suburi (self));
       break;
+    case PROP_TAGS:
+      g_value_take_boxed (value, clapper_media_item_get_tags (self));
+      break;
     case PROP_TITLE:
       g_value_take_string (value, clapper_media_item_get_title (self));
       break;
@@ -686,10 +951,28 @@ clapper_media_item_class_init (ClapperMediaItemClass *klass)
       NULL, NULL, NULL,
       G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
 
+  /**
+   * ClapperMediaItem:tags:
+   *
+   * A readable list of tags stored in media item.
+   *
+   * Since: 0.10
+   */
+  param_specs[PROP_TAGS] = g_param_spec_boxed ("tags",
+      NULL, NULL, GST_TYPE_TAG_LIST,
+      G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+
+  /* FIXME: 1.0: Consider rename to e.g. "(menu/display)-title"
+   * and also make it non-nullable (return URI as final fallback).
+   * NOTE: It would probably need to work with redirect URI */
   /**
    * ClapperMediaItem:title:
    *
    * Media title.
+   *
+   * This might be a different string compared to `title` from
+   * [property@Clapper.MediaItem:tags], as this gives parsed
+   * title from file name/URI as fallback when no `title` tag.
    */
   param_specs[PROP_TITLE] = g_param_spec_string ("title",
       NULL, NULL, NULL,
@@ -699,15 +982,21 @@ clapper_media_item_class_init (ClapperMediaItemClass *klass)
    * ClapperMediaItem:container-format:
    *
    * Media container format.
+   *
+   * Deprecated: 0.10: Get `container-format` from [property@Clapper.MediaItem:tags] instead.
    */
   param_specs[PROP_CONTAINER_FORMAT] = g_param_spec_string ("container-format",
       NULL, NULL, NULL,
-      G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS);
+      G_PARAM_READABLE | G_PARAM_EXPLICIT_NOTIFY | G_PARAM_STATIC_STRINGS | G_PARAM_DEPRECATED);
 
   /**
    * ClapperMediaItem:duration:
    *
    * Media duration as a decimal number in seconds.
+   *
+   * This might be a different value compared to `duration` from
+   * [property@Clapper.MediaItem:tags], as this value is updated
+   * during decoding instead of being a fixed value from metadata.
    */
   param_specs[PROP_DURATION] = g_param_spec_double ("duration",
       NULL, NULL, 0, G_MAXDOUBLE, 0,

src/lib/clapper/clapper-media-item.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -27,6 +26,7 @@
 #include <glib-object.h>
 #include <gio/gio.h>
 #include <gst/gst.h>
+#include <gst/tag/tag.h>
 
 #include <clapper/clapper-visibility.h>
 #include <clapper/clapper-timeline.h>
@@ -63,12 +63,18 @@ gchar * clapper_media_item_get_suburi (ClapperMediaItem *item);
 CLAPPER_API
 gchar * clapper_media_item_get_title (ClapperMediaItem *item);
 
-CLAPPER_API
+CLAPPER_DEPRECATED_FOR(clapper_media_item_get_tags)
 gchar * clapper_media_item_get_container_format (ClapperMediaItem *item);
 
 CLAPPER_API
 gdouble clapper_media_item_get_duration (ClapperMediaItem *item);
 
+CLAPPER_API
+GstTagList * clapper_media_item_get_tags (ClapperMediaItem *item);
+
+CLAPPER_API
+gboolean clapper_media_item_populate_tags (ClapperMediaItem *item, const GstTagList *tags);
+
 CLAPPER_API
 ClapperTimeline * clapper_media_item_get_timeline (ClapperMediaItem *item);
 

src/lib/clapper/clapper-playbin-bus-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-playbin-bus.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #include <gst/pbutils/pbutils.h>
@@ -173,6 +172,10 @@ _update_current_duration (ClapperPlayer *player)
     if (clapper_media_item_set_duration (player->played_item, duration_dbl, player->app_bus)) {
       ClapperFeaturesManager *features_manager;
 
+      if (player->reactables_manager) {
+        clapper_reactables_manager_trigger_item_updated (player->reactables_manager, player->played_item,
+            CLAPPER_REACTABLE_ITEM_UPDATED_DURATION);
+      }
       if ((features_manager = clapper_player_get_features_manager (player)))
         clapper_features_manager_trigger_item_updated (features_manager, player->played_item);
     }
@@ -828,6 +831,71 @@ _handle_element_msg (GstMessage *msg, ClapperPlayer *player)
 
     g_free (name);
     g_free (details);
+  } else if (gst_message_has_name (msg, "ClapperPlaylistParsed")) {
+    ClapperMediaItem *playlist_item = NULL;
+    GListStore *playlist = NULL;
+    const GstStructure *structure = gst_message_get_structure (msg);
+    guint n_items;
+
+    /* If message contains item, use that.
+     * Otherwise assume pending item was parsed. */
+    if (gst_structure_has_field (structure, "item")) {
+      gst_structure_get (structure,
+          "item", CLAPPER_TYPE_MEDIA_ITEM, &playlist_item, NULL);
+    } else {
+      GST_OBJECT_LOCK (player);
+
+      /* Playlist is always parsed before playback starts */
+      if (player->pending_item)
+        playlist_item = gst_object_ref (player->pending_item);
+
+      GST_OBJECT_UNLOCK (player);
+    }
+
+    if (G_UNLIKELY (playlist_item == NULL)) {
+      GST_WARNING_OBJECT (player, "Playlist parsed without media item set");
+      return;
+    }
+
+    GST_INFO_OBJECT (player, "Received parsed playlist of %" GST_PTR_FORMAT
+        "(%s)", playlist_item, clapper_media_item_get_uri (playlist_item));
+
+    gst_structure_get (structure,
+        "playlist", G_TYPE_LIST_STORE, &playlist, NULL);
+
+    n_items = g_list_model_get_n_items (G_LIST_MODEL (playlist));
+
+    if (G_LIKELY (n_items > 0)) {
+      ClapperMediaItem *active_item = g_list_model_get_item (G_LIST_MODEL (playlist), 0);
+      gboolean updated;
+
+      /* Update redirect URI (must be done from player thread) */
+      updated = clapper_media_item_update_from_item (playlist_item, active_item, player);
+      gst_object_unref (active_item);
+
+      if (!updated) {
+        GstMessage *msg;
+        GError *error;
+
+        error = g_error_new (GST_RESOURCE_ERROR, GST_RESOURCE_ERROR_FAILED,
+            "Detected infinite redirection in playlist");
+        msg = gst_message_new_error (GST_OBJECT (player), error, NULL);
+
+        _handle_error_msg (msg, player);
+
+        g_error_free (error);
+        gst_message_unref (msg);
+      } else if (n_items > 1) {
+        /* Forward to append remaining items (must be done from main thread) */
+        clapper_app_bus_post_insert_playlist (player->app_bus,
+            GST_OBJECT_CAST (player),
+            GST_OBJECT_CAST (playlist_item),
+            G_OBJECT (playlist));
+      }
+    }
+
+    gst_object_unref (playlist_item);
+    g_object_unref (playlist);
   } else if (gst_message_has_name (msg, "GstCacheDownloadComplete")) {
     ClapperMediaItem *downloaded_item = NULL;
     const GstStructure *structure;
@@ -1046,6 +1114,8 @@ _handle_stream_start_msg (GstMessage *msg, ClapperPlayer *player)
   if (G_LIKELY (changed)) {
     clapper_queue_handle_played_item_changed (player->queue, player->played_item, player->app_bus);
 
+    if (player->reactables_manager)
+      clapper_reactables_manager_trigger_played_item_changed (player->reactables_manager, player->played_item);
     if (clapper_player_get_have_features (player))
       clapper_features_manager_trigger_played_item_changed (player->features_manager, player->played_item);
   }

src/lib/clapper/clapper-player-private.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once
@@ -27,6 +26,7 @@
 
 #include "clapper-app-bus-private.h"
 #include "clapper-features-manager-private.h"
+#include "clapper-reactables-manager-private.h"
 
 G_BEGIN_DECLS
 
@@ -47,6 +47,8 @@ struct _ClapperPlayer
   ClapperFeaturesManager *features_manager;
   gint have_features; // atomic integer
 
+  ClapperReactablesManager *reactables_manager;
+
   ClapperEnhancerProxyList *enhancer_proxies;
 
   /* This is different from queue current item as it is used/changed only

src/lib/clapper/clapper-player.c

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -50,6 +49,7 @@
 #include "clapper-audio-stream-private.h"
 #include "clapper-subtitle-stream-private.h"
 #include "clapper-enhancer-proxy-list-private.h"
+#include "clapper-reactable.h"
 #include "clapper-enums-private.h"
 #include "clapper-utils-private.h"
 #include "../shared/clapper-shared-utils-private.h"
@@ -159,6 +159,8 @@ clapper_player_refresh_position (ClapperPlayer *self)
 
     clapper_app_bus_post_prop_notify (self->app_bus,
         GST_OBJECT_CAST (self), param_specs[PROP_POSITION]);
+    if (self->reactables_manager)
+      clapper_reactables_manager_trigger_position_changed (self->reactables_manager, position_dbl);
     if (clapper_player_get_have_features (self))
       clapper_features_manager_trigger_position_changed (self->features_manager, position_dbl);
   }
@@ -225,6 +227,8 @@ clapper_player_handle_playbin_state_changed (ClapperPlayer *self)
 
     clapper_app_bus_post_prop_notify (self->app_bus,
         GST_OBJECT_CAST (self), param_specs[PROP_STATE]);
+    if (self->reactables_manager)
+      clapper_reactables_manager_trigger_state_changed (self->reactables_manager, state);
     if (clapper_player_get_have_features (self))
       clapper_features_manager_trigger_state_changed (self->features_manager, state);
   }
@@ -256,6 +260,8 @@ clapper_player_handle_playbin_volume_changed (ClapperPlayer *self, const GValue
 
     clapper_app_bus_post_prop_notify (self->app_bus,
         GST_OBJECT_CAST (self), param_specs[PROP_VOLUME]);
+    if (self->reactables_manager)
+      clapper_reactables_manager_trigger_volume_changed (self->reactables_manager, volume);
     if (clapper_player_get_have_features (self))
       clapper_features_manager_trigger_volume_changed (self->features_manager, volume);
   }
@@ -280,6 +286,8 @@ clapper_player_handle_playbin_mute_changed (ClapperPlayer *self, const GValue *v
 
     clapper_app_bus_post_prop_notify (self->app_bus,
         GST_OBJECT_CAST (self), param_specs[PROP_MUTE]);
+    if (self->reactables_manager)
+      clapper_reactables_manager_trigger_mute_changed (self->reactables_manager, mute);
     if (clapper_player_get_have_features (self))
       clapper_features_manager_trigger_mute_changed (self->features_manager, mute);
   }
@@ -400,6 +408,8 @@ clapper_player_handle_playbin_rate_changed (ClapperPlayer *self, gdouble speed)
 
     clapper_app_bus_post_prop_notify (self->app_bus,
         GST_OBJECT_CAST (self), param_specs[PROP_SPEED]);
+    if (self->reactables_manager)
+      clapper_reactables_manager_trigger_speed_changed (self->reactables_manager, speed);
     if (clapper_player_get_have_features (self))
       clapper_features_manager_trigger_speed_changed (self->features_manager, speed);
   }
@@ -816,7 +826,8 @@ _element_setup_cb (GstElement *playbin, GstElement *element, ClapperPlayer *self
   factory_name = g_intern_static_string (GST_OBJECT_NAME (factory));
   GST_INFO_OBJECT (self, "Element setup: %s", factory_name);
 
-  if (factory_name == g_intern_static_string ("clapperextractablesrc")) {
+  if (factory_name == g_intern_static_string ("clapperextractablesrc")
+      || factory_name == g_intern_static_string ("clapperplaylistdemux")) {
     g_object_set (element,
         "enhancer-proxies", self->enhancer_proxies,
         NULL);
@@ -2326,6 +2337,11 @@ clapper_player_init (ClapperPlayer *self)
 
   clapper_enhancer_proxy_list_fill_from_global_proxies (self->enhancer_proxies);
 
+  if (clapper_enhancer_proxy_list_has_proxy_with_interface (self->enhancer_proxies, CLAPPER_TYPE_REACTABLE)) {
+    self->reactables_manager = clapper_reactables_manager_new ();
+    gst_object_set_parent (GST_OBJECT_CAST (self->reactables_manager), GST_OBJECT_CAST (self));
+  }
+
   self->position_query = gst_query_new_position (GST_FORMAT_TIME);
 
   self->current_state = GST_STATE_NULL;
@@ -2392,6 +2408,11 @@ clapper_player_finalize (GObject *object)
   gst_object_unparent (GST_OBJECT_CAST (self->subtitle_streams));
   gst_object_unref (self->subtitle_streams);
 
+  if (self->reactables_manager) {
+    gst_object_unparent (GST_OBJECT_CAST (self->reactables_manager));
+    gst_object_unref (self->reactables_manager);
+  }
+
   gst_object_unparent (GST_OBJECT_CAST (self->enhancer_proxies));
   gst_object_unref (self->enhancer_proxies);
 
@@ -2833,7 +2854,7 @@ clapper_player_class_init (ClapperPlayerClass *klass)
    * An initial bitrate (bits/s) to select during
    * starting adaptive streaming such as DASH or HLS.
    *
-   * If value is higher than lowest available bitrate in streaming
+   * If value is lower than the lowest available bitrate in streaming
    * manifest, then lowest possible bitrate will be selected.
    *
    * Since: 0.8

src/lib/clapper/clapper-player.h

@@ -12,9 +12,8 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
  */
 
 #pragma once

src/lib/clapper/clapper-playlistable-private.h

@@ -0,0 +1,31 @@
+/* Clapper Playback Library
+ * Copyright (C) 2025 Rafał Dzięgiel <rafostar.github@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <glib.h>
+#include <gio/gio.h>
+
+#include "clapper-playlistable.h"
+
+G_BEGIN_DECLS
+
+G_GNUC_INTERNAL
+gboolean clapper_playlistable_parse (ClapperPlaylistable *playlistable, GUri *uri, GBytes *bytes, GListStore *playlist, GCancellable *cancellable, GError **error);
+
+G_END_DECLS