move old example to tests/examples/volume/volune.c

Original commit message from CVS:
* configure.ac:
* gst/volume/Makefile.am:
* gst/volume/demo.c:
move old example to tests/examples/volume/volune.c
* tests/examples/Makefile.am:
* tests/examples/seek/seek.c: (main):
change window-close event from "delete-event" to "destroy"
* tests/examples/volume/Makefile.am:
* tests/examples/volume/volume.c: (value_changed_callback),
(setup_gui), (message_received), (eos_message_received), (main):
fix event handling and bus usage

ChangeLog

@@ -1,3 +1,18 @@
+2005-12-30  Stefan Kost  <ensonic@users.sf.net>
+
+	* configure.ac:
+	* gst/volume/Makefile.am:
+	* gst/volume/demo.c:
+          move old example to tests/examples/volume/volune.c
+	* tests/examples/Makefile.am:
+	* tests/examples/seek/seek.c: (main):
+          change window-close event from "delete-event" to "destroy"
+	* tests/examples/volume/Makefile.am:
+	* tests/examples/volume/volume.c: (value_changed_callback),
+	(setup_gui), (message_received), (eos_message_received), (main):
+          fix event handling and bus usage
+
+
 2005-12-29  Stefan Kost  <ensonic@users.sf.net>
 
 	* gst/audiotestsrc/gstaudiotestsrc.c:

configure.ac

@@ -640,6 +640,7 @@ tests/Makefile
 tests/check/Makefile
 tests/examples/Makefile
 tests/examples/seek/Makefile
+tests/examples/volume/Makefile
 tests/icles/Makefile
 docs/Makefile
 docs/libs/Makefile

gst/volume/Makefile.am

@@ -11,9 +11,3 @@ libgstvolume_la_LIBADD = \
 
 noinst_HEADERS = gstvolume.h
 
-if HAVE_GTK
-noinst_PROGRAMS = demo
-demo_SOURCES = demo.c
-demo_CFLAGS = $(GTK_CFLAGS) $(GST_CFLAGS) -D_GNU_SOURCE
-demo_LDFLAGS = $(GTK_LIBS) $(GST_LIBS) -lm
-endif

tests/examples/Makefile.am

@@ -4,6 +4,6 @@ else
 FT2_SUBDIRS =
 endif
 
-SUBDIRS = $(FT2_SUBDIRS)
+SUBDIRS = $(FT2_SUBDIRS) volume
 
-DIST_SUBDIRS = seek
+DIST_SUBDIRS = seek volume

tests/examples/seek/seek.c

@@ -1440,7 +1440,7 @@ main (int argc, char **argv)
   g_signal_connect (G_OBJECT (flush_checkbox), "toggled",
       G_CALLBACK (flush_toggle_cb), pipeline);
 
-  g_signal_connect (G_OBJECT (window), "delete_event", gtk_main_quit, NULL);
+  g_signal_connect (G_OBJECT (window), "destroy", gtk_main_quit, NULL);
 
   /* show the gui. */
   gtk_widget_show_all (window);

tests/examples/volume/Makefile.am

@@ -0,0 +1,6 @@
+if HAVE_GTK
+noinst_PROGRAMS = volume
+volume_SOURCES = volume.c
+volume_CFLAGS = $(GTK_CFLAGS) $(GST_CFLAGS) -D_GNU_SOURCE
+volume_LDFLAGS = $(GTK_LIBS) $(GST_LIBS) -lm
+endif

tests/examples/volume/volume.c

@@ -1,6 +1,6 @@
 /* GStreamer
  *
- * demo.c: sample application to change the volume of a pipeline
+ * volume.c: sample application to change the volume of a pipeline
  *
  * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
  *
@@ -85,6 +85,34 @@ setup_gui (GstElement * volume)
   gtk_widget_show_all (GTK_WIDGET (window));
 }
 
+static void
+message_received (GstBus * bus, GstMessage * message, GstPipeline * pipeline)
+{
+  const GstStructure *s;
+
+  s = gst_message_get_structure (message);
+  g_print ("message from \"%s\" (%s): ",
+      GST_STR_NULL (GST_ELEMENT_NAME (GST_MESSAGE_SRC (message))),
+      gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
+  if (s) {
+    gchar *sstr;
+
+    sstr = gst_structure_to_string (s);
+    g_print ("%s\n", sstr);
+    g_free (sstr);
+  } else {
+    g_print ("no message details\n");
+  }
+}
+
+static void
+eos_message_received (GstBus * bus, GstMessage * message,
+    GstPipeline * pipeline)
+{
+  message_received (bus, message, pipeline);
+  gtk_main_quit ();
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -92,6 +120,7 @@ main (int argc, char *argv[])
   GstElement *pipeline = NULL;
   GError *error = NULL;
   GstElement *volume;
+  GstBus *bus;
 
   gst_init (&argc, &argv);
   gtk_init (&argc, &argv);
@@ -111,14 +140,24 @@ main (int argc, char *argv[])
     return 1;
   }
 
+  /* setup message handling */
+  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
+  gst_bus_add_signal_watch_full (bus, G_PRIORITY_HIGH);
+  g_signal_connect (bus, "message::error", (GCallback) message_received,
+      pipeline);
+  g_signal_connect (bus, "message::warning", (GCallback) message_received,
+      pipeline);
+  g_signal_connect (bus, "message::eos", (GCallback) eos_message_received,
+      pipeline);
+
   /* setup GUI */
   setup_gui (volume);
 
   /* go to main loop */
   gst_element_set_state (pipeline, GST_STATE_PLAYING);
-  gst_bus_poll (gst_element_get_bus (pipeline),
+  gtk_main ();
-      GST_MESSAGE_EOS | GST_MESSAGE_ERROR, -1);
   gst_element_set_state (pipeline, GST_STATE_NULL);
+  gst_object_unref (pipeline);
 
   return 0;
 }