Check in TimelineObject what tracks are supported before creating TrackObject-s

We used to do it in TimelineFileSource which does not make sense.

At the same time we set  AUDIO | VIDEO as default supported types as it is more
likely to be what subclasses support. If it is not the case, they need to
specify it as shown in ges-timeline-custom-timeline-source.c

+ Fix the tests accordingly

ges/ges-custom-timeline-source.c

@@ -65,8 +65,8 @@ static GParameter *
 extractable_get_parameters_from_id (const gchar * id, guint * n_params)
 {
   gchar **func_udata;
-  GParameter *params = g_new0 (GParameter, 2);
-  *n_params = 2;
+  GParameter *params = g_new0 (GParameter, 3);
+  *n_params = 3;
 
   /* We already know that we have a valid ID here */
   func_udata = g_strsplit (id, "!", -1);
@@ -81,6 +81,10 @@ extractable_get_parameters_from_id (const gchar * id, guint * n_params)
   g_value_set_pointer (&params[1].value,
       GUINT_TO_POINTER (g_ascii_strtoll (func_udata[1], NULL, 10)));
 
+  params[2].name = g_strdup ("supported-formats");
+  g_value_init (&params[2].value, G_TYPE_ENUM);
+  g_value_set_enum (&params[2].value, GES_TRACK_TYPE_CUSTOM);
+
   g_strfreev (func_udata);
 
   return params;
@@ -231,7 +235,8 @@ ges_custom_timeline_source_new (GESFillTrackObjectUserFunc func,
 {
   GESCustomTimelineSource *src;
 
-  src = g_object_new (GES_TYPE_CUSTOM_TIMELINE_SOURCE, NULL);
+  src = g_object_new (GES_TYPE_CUSTOM_TIMELINE_SOURCE, "supported-formats",
+      GES_TRACK_TYPE_CUSTOM, NULL);
   src->priv->filltrackobjectfunc = func;
   src->priv->user_data = user_data;
 

ges/ges-timeline-file-source.c

@@ -58,6 +58,7 @@ enum
   PROP_URI,
   PROP_MUTE,
   PROP_IS_IMAGE,
+  PROP_SUPPORTED_FORMATS,
 };
 
 
@@ -86,6 +87,11 @@ ges_timeline_filesource_get_property (GObject * object, guint property_id,
     case PROP_IS_IMAGE:
       g_value_set_boolean (value, priv->is_image);
       break;
+    case PROP_SUPPORTED_FORMATS:
+      g_value_set_flags (value,
+          ges_timeline_object_get_supported_formats (GES_TIMELINE_OBJECT
+              (object)));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
   }
@@ -107,6 +113,10 @@ ges_timeline_filesource_set_property (GObject * object, guint property_id,
     case PROP_IS_IMAGE:
       ges_timeline_filesource_set_is_image (tfs, g_value_get_boolean (value));
       break;
+    case PROP_SUPPORTED_FORMATS:
+      ges_timeline_object_set_supported_formats (GES_TIMELINE_OBJECT (tfs),
+          g_value_get_flags (value));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
   }
@@ -164,6 +174,14 @@ ges_timeline_filesource_class_init (GESTimelineFileSourceClass * klass)
           "Whether the timeline object represents a still image or not",
           FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
 
+  /* Redefine the supported formats property so the default value is UNKNOWN
+   * and not AUDIO | VIDEO */
+  g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
+      g_param_spec_flags ("supported-formats",
+          "Supported formats", "Formats supported by the file",
+          GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_UNKNOWN,
+          G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
   timobj_class->create_track_object =
       ges_timeline_filesource_create_track_object;
   timobj_class->set_max_duration = filesource_set_max_duration;
@@ -183,7 +201,7 @@ extractable_check_id (GType type, const gchar * id)
 static GParameter *
 extractable_get_parameters_from_id (const gchar * id, guint * n_params)
 {
-  GParameter *params = g_new0 (GParameter, 3);
+  GParameter *params = g_new0 (GParameter, 2);
 
   params[0].name = g_strdup ("uri");
   g_value_init (&params[0].value, G_TYPE_STRING);
@@ -418,12 +436,6 @@ ges_timeline_filesource_create_track_object (GESTimelineObject * obj,
   GESTimelineFileSourcePrivate *priv = GES_TIMELINE_FILE_SOURCE (obj)->priv;
   GESTrackObject *res;
 
-  if (!(ges_timeline_object_get_supported_formats (obj) & track->type)) {
-    GST_DEBUG ("We don't support this track format (caps %" GST_PTR_FORMAT
-        ")", ges_track_get_caps (track));
-    return NULL;
-  }
-
   if (priv->is_image) {
     if (track->type != GES_TRACK_TYPE_VIDEO) {
       GST_DEBUG ("Object is still image, not adding any audio source");

ges/ges-timeline-object.c

@@ -314,7 +314,7 @@ ges_timeline_object_class_init (GESTimelineObjectClass * klass)
    */
   properties[PROP_SUPPORTED_FORMATS] = g_param_spec_flags ("supported-formats",
       "Supported formats", "Formats supported by the file",
-      GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_UNKNOWN,
+      GES_TYPE_TRACK_TYPE, GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO,
       G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
 
   g_object_class_install_property (object_class, PROP_SUPPORTED_FORMATS,
@@ -473,6 +473,13 @@ ges_timeline_object_create_track_object (GESTimelineObject * object,
   g_return_val_if_fail (GES_IS_TIMELINE_OBJECT (object), NULL);
   g_return_val_if_fail (GES_IS_TRACK (track), NULL);
 
+  if (!(track->type & object->priv->supportedformats)) {
+    GST_DEBUG ("We don't support this track format (supported: %i caps %"
+        GST_PTR_FORMAT ")", object->priv->supportedformats,
+        ges_track_get_caps (track));
+    return NULL;
+  }
+
   class = GES_TIMELINE_OBJECT_GET_CLASS (object);
 
   if (G_UNLIKELY (class->create_track_object == NULL)) {

tests/check/ges/layer.c

@@ -165,12 +165,18 @@ GST_START_TEST (test_layer_priorities)
   object1 =
       GES_TIMELINE_OBJECT (ges_custom_timeline_source_new (my_fill_track_func,
           NULL));
+  ges_timeline_object_set_supported_formats (object1,
+      GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO);
   object2 =
       GES_TIMELINE_OBJECT (ges_custom_timeline_source_new (my_fill_track_func,
           NULL));
+  ges_timeline_object_set_supported_formats (object2,
+      GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO);
   object3 =
       GES_TIMELINE_OBJECT (ges_custom_timeline_source_new (my_fill_track_func,
           NULL));
+  ges_timeline_object_set_supported_formats (object3,
+      GES_TRACK_TYPE_AUDIO | GES_TRACK_TYPE_VIDEO);
   fail_unless (object1 != NULL);
   fail_unless (object2 != NULL);
   fail_unless (object3 != NULL);