timeline: Make use of the Project API for timeline saving

API:
    *  Add a formatter_type paramatter to ges_timeline_save_to_uri

ges/ges-timeline.c

@@ -32,8 +32,6 @@
  *
  * To save/load a timeline, you can use the ges_timeline_load_from_uri() and
  * ges_timeline_save_to_uri() methods to use the default format. If you wish
- * to specify the format to save/load the timeline from, please consult the
- * documentation about #GESFormatter.
  */
 
 #include "ges-internal.h"
@@ -1653,27 +1651,18 @@ ges_timeline_new (void)
  * Returns: A new timeline if the uri was loaded successfully, or NULL if the
  * uri could not be loaded
  */
-
 GESTimeline *
 ges_timeline_new_from_uri (const gchar * uri, GError ** error)
 {
   GESTimeline *ret;
+  GESProject *project = ges_project_new (uri);
 
-  /* FIXME : we should have a GError** argument so the user can know why
-   * it wasn't able to load the uri
-   */
-
-  ret = ges_timeline_new ();
-
-  if (!ges_timeline_load_from_uri (ret, uri, error)) {
-    g_object_unref (ret);
-    return NULL;
-  }
+  ret = GES_TIMELINE (ges_asset_extract (GES_ASSET (project), error));
+  gst_object_unref (ret);
 
   return ret;
 }
 
-
 /**
  * ges_timeline_load_from_uri:
  * @timeline: an empty #GESTimeline into which to load the formatter
@@ -1684,32 +1673,62 @@ ges_timeline_new_from_uri (const gchar * uri, GError ** error)
  * Returns: TRUE if the timeline was loaded successfully, or FALSE if the uri
  * could not be loaded.
  */
-
 gboolean
 ges_timeline_load_from_uri (GESTimeline * timeline, const gchar * uri,
     GError ** error)
 {
-  GST_FIXME ("This should be reimplemented");
-  return FALSE;
+  GESProject *project;
+  gboolean ret = FALSE;
+
+  g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
+  g_return_val_if_fail ((ges_extractable_get_asset (GES_EXTRACTABLE
+              (timeline)) == NULL), FALSE);
+
+  project = ges_project_new (uri);
+  ret = ges_project_load (project, timeline, error);
+  gst_object_unref (project);
+
+  return ret;
 }
 
 /**
  * ges_timeline_save_to_uri:
  * @timeline: a #GESTimeline
  * @uri: The location to save to
+ * @formatter_asset: (allow-none): The formatter asset to use or %NULL. If %NULL,
+ * will try to save in the same format as the one from which the timeline as been loaded
+ * or default to the formatter with highest rank
+ * @overwrite: %TRUE to overwrite file if it exists
+ * @error: (out) (allow-none): An error to be set in case something wrong happens or %NULL
  *
  * Saves the timeline to the given location
  *
  * Returns: TRUE if the timeline was successfully saved to the given location,
  * else FALSE.
  */
-
 gboolean
 ges_timeline_save_to_uri (GESTimeline * timeline, const gchar * uri,
-    GError ** error)
+    GESAsset * formatter_asset, gboolean overwrite, GError ** error)
 {
-  GST_FIXME ("This should be reimplemented");
-  return FALSE;
+  gboolean ret, created_proj;
+  GESProject *project;
+
+  g_return_val_if_fail (GES_IS_TIMELINE (timeline), FALSE);
+  project =
+      GES_PROJECT (ges_extractable_get_asset (GES_EXTRACTABLE (timeline)));
+
+  if (project == NULL) {
+    project = ges_project_new (NULL);
+    created_proj = TRUE;
+  }
+
+  ret = ges_project_save (project, timeline, uri, formatter_asset, overwrite,
+      error);
+
+  if (created_proj)
+    gst_object_unref (project);
+
+  return ret;
 }
 
 /**

ges/ges-timeline.h

@@ -48,6 +48,13 @@ G_BEGIN_DECLS
 #define GES_TIMELINE_GET_TRACKS(obj) (GES_TIMELINE (obj)->tracks)
 #define GES_TIMELINE_GET_LAYERS(obj) (GES_TIMELINE (obj)->layers)
 
+/**
+ * ges_timeline_get_project:
+ *
+ * Helper macro to retrieve the project from which a #GESTimeline as been extracted
+ */
+#define ges_timeline_get_project(obj) (GES_TIMELINE (ges_extractable_get_asset (obj))
+
 typedef struct _GESTimelinePrivate GESTimelinePrivate;
 
 /**
@@ -95,8 +102,8 @@ GESTimeline* ges_timeline_new (void);
 GESTimeline* ges_timeline_new_from_uri (const gchar *uri, GError **error);
 
 gboolean ges_timeline_load_from_uri (GESTimeline *timeline, const gchar *uri, GError **error);
-gboolean ges_timeline_save_to_uri (GESTimeline *timeline, const gchar *uri, GError **error);
-
+gboolean ges_timeline_save_to_uri (GESTimeline * timeline, const gchar * uri,
+    GESAsset *formatter_asset, gboolean overwrite, GError ** error);
 gboolean ges_timeline_add_layer (GESTimeline *timeline, GESTimelineLayer *layer);
 GESTimelineLayer * ges_timeline_append_layer (GESTimeline * timeline);
 gboolean ges_timeline_remove_layer (GESTimeline *timeline, GESTimelineLayer *layer);

tests/examples/ges-ui.c

@@ -1239,7 +1239,7 @@ app_add_transition (App * app)
 static void
 app_save_to_uri (App * app, gchar * uri)
 {
-  ges_timeline_save_to_uri (app->timeline, uri, NULL);
+  ges_timeline_save_to_uri (app->timeline, uri, NULL, FALSE, NULL);
 }
 
 static void
@@ -1377,20 +1377,10 @@ fail:
 static gboolean
 load_file_async (App * app)
 {
-
-#if 0
-  GESFormatter *formatter;
-  g_printf ("%s\n", app->pending_uri);
-
-  formatter = ges_formatter_new_for_uri (app->pending_uri);
-  ges_formatter_load_from_uri (formatter, app->timeline, app->pending_uri,
-      NULL);
+  ges_timeline_load_from_uri (app->timeline, app->pending_uri, NULL);
 
   g_free (app->pending_uri);
   app->pending_uri = NULL;
-#endif
-
-  GST_FIXME ("This should be reimplemented");
 
   return FALSE;
 }

tools/ges-launch.c

@@ -275,7 +275,7 @@ create_pipeline (gchar * load_path, gchar * save_path, int argc, char **argv,
       g_error ("couldn't create uri for '%s", save_path);
       goto failure;
     }
-    ges_timeline_save_to_uri (timeline, uri, NULL);
+    ges_timeline_save_to_uri (timeline, uri, NULL, TRUE, NULL);
     g_free (uri);
   }