[PATCH 3/7] grl-inspect: Add delay when listing sources

["Juan A. Suarez Romero" <jasuarez igalia com>]

As sources are dynamic, some of them can show up after a period of time.

Add a new parameter to gst-inspect to wait for some seconds before
introspecting the available sources.
---
 tools/grilo-inspect/grl-inspect.c |   57 ++++++++++++++++++++++++++++++++----
 1 files changed, 50 insertions(+), 7 deletions(-)

diff --git a/tools/grilo-inspect/grl-inspect.c b/tools/grilo-inspect/grl-inspect.c
index 9cd6d25..58a051b 100644
--- a/tools/grilo-inspect/grl-inspect.c
+++ b/tools/grilo-inspect/grl-inspect.c
@@ -23,26 +23,69 @@
 #include <grilo.h>
 #include <glib.h>
 
-int
-main (int argc, char *argv[])
+gint delay = 0;
+GMainLoop *mainloop = NULL;
+
+static GOptionEntry entries[] = {
+  { "delay", 'd', 0,
+    G_OPTION_ARG_INT, &delay,
+    "Wait some seconds before showing results",
+    NULL },
+  { NULL }
+};
+
+static gboolean
+list_all_sources (gpointer data)
 {
   GrlMediaPlugin **plugin;
   GrlMediaPlugin **plugins;
   GrlPluginRegistry *registry;
 
+  registry = grl_plugin_registry_get_instance ();
+
+  plugins = grl_plugin_registry_get_sources (registry, FALSE);
+  for (plugin = plugins; *plugin; plugin++) {
+    g_print ("%s\n", grl_media_plugin_get_id (*plugin));
+  }
+
+  g_main_loop_quit (mainloop);
+
+  return FALSE;
+}
+
+int
+main (int argc, char *argv[])
+{
+  GError *error = NULL;
+  GOptionContext *context;
+  GrlPluginRegistry *registry;
+
+  context = g_option_context_new ("- introspect Grilo plugins");
+  g_option_context_add_main_entries (context, entries, NULL);
+  g_option_context_add_group (context, grl_init_get_option_group ());
+  g_option_context_parse (context, &argc, &argv, &error);
+  g_option_context_free (context);
+
+  if (error) {
+    g_printerr ("Invalid arguments, %s\n", error->message);
+    g_clear_error (&error);
+    return -1;
+  }
+
   grl_init (&argc, &argv);
   grl_log_init ("*:-");
 
   registry = grl_plugin_registry_get_instance ();
+  mainloop = g_main_loop_new (NULL, FALSE);
 
   grl_plugin_registry_load_all (registry);
 
-  plugins = grl_plugin_registry_get_sources (registry, FALSE);
-  for (plugin = plugins; *plugin; plugin++) {
-    g_print ("%s\n", grl_media_plugin_get_id (*plugin));
+  if (delay > 0) {
+    g_timeout_add_seconds ((guint) delay, list_all_sources, NULL);
+  } else {
+    g_idle_add (list_all_sources, NULL);
   }
 
-  g_free (plugins);
-
+  g_main_loop_run (mainloop);
   return 0;
 }
-- 
1.7.0.4