--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gst_plugins_base/gst/playback/test.c	Thu Dec 17 08:53:32 2009 +0200
@@ -0,0 +1,193 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <gst/gst.h>
+
+#include <stdlib.h>
+
+static GMainLoop *loop;
+
+static GstElement *
+gen_video_element (void)
+{
+  GstElement *element;
+  GstElement *conv;
+  GstElement *sink;
+  GstPad *pad;
+
+  element = gst_bin_new ("vbin");
+  conv = gst_element_factory_make ("ffmpegcolorspace", "conv");
+  sink = gst_element_factory_make (DEFAULT_VIDEOSINK, "sink");
+
+  gst_bin_add (GST_BIN (element), conv);
+  gst_bin_add (GST_BIN (element), sink);
+  gst_element_link_pads (conv, "src", sink, "sink");
+
+  pad = gst_element_get_pad (conv, "sink");
+  gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
+  gst_object_unref (pad);
+
+  return element;
+}
+
+static GstElement *
+gen_audio_element (void)
+{
+  GstElement *element;
+  GstElement *conv;
+  GstElement *sink;
+  GstPad *pad;
+
+  element = gst_bin_new ("abin");
+  conv = gst_element_factory_make ("audioconvert", "conv");
+  sink = gst_element_factory_make (DEFAULT_AUDIOSINK, "sink");
+
+  gst_bin_add (GST_BIN (element), conv);
+  gst_bin_add (GST_BIN (element), sink);
+  gst_element_link_pads (conv, "src", sink, "sink");
+
+  pad = gst_element_get_pad (conv, "sink");
+  gst_element_add_pad (element, gst_ghost_pad_new ("sink", pad));
+  gst_object_unref (pad);
+
+  return element;
+}
+
+static void
+cb_newpad (GstElement * decodebin, GstPad * pad, gboolean last, gpointer data)
+{
+  GstCaps *caps;
+  GstStructure *str;
+  GstPad *sinkpad;
+  GstElement *sink;
+  GstElement *pipeline;
+  const gchar *name;
+  GstStateChangeReturn ret;
+  GstPadLinkReturn lret;
+
+  /* check media type */
+  caps = gst_pad_get_caps (pad);
+  str = gst_caps_get_structure (caps, 0);
+
+  name = gst_structure_get_name (str);
+  g_print ("name: %s\n", name);
+
+  if (g_strrstr (name, "audio")) {
+    sink = gen_audio_element ();
+  } else if (g_strrstr (name, "video")) {
+    sink = gen_video_element ();
+  } else {
+    sink = NULL;
+  }
+  gst_caps_unref (caps);
+
+  if (sink) {
+    pipeline = GST_ELEMENT_CAST (data);
+
+    /* add new sink to the pipeline */
+    gst_bin_add (GST_BIN_CAST (pipeline), sink);
+
+    /* set the new sink tp PAUSED as well */
+    ret = gst_element_set_state (sink, GST_STATE_PAUSED);
+    if (ret == GST_STATE_CHANGE_FAILURE)
+      goto state_error;
+
+    /* get the ghostpad of the sink bin */
+    sinkpad = gst_element_get_pad (sink, "sink");
+
+    /* link'n'play */
+    lret = gst_pad_link (pad, sinkpad);
+    if (lret != GST_PAD_LINK_OK)
+      goto link_failed;
+
+    gst_object_unref (sinkpad);
+  }
+  return;
+
+  /* ERRORS */
+state_error:
+  {
+    gst_bin_remove (GST_BIN_CAST (pipeline), sink);
+    g_warning ("could not change state of new sink (%d)", ret);
+    return;
+  }
+link_failed:
+  {
+    g_warning ("could not link pad and sink (%d)", lret);
+    return;
+  }
+}
+
+gint
+main (gint argc, gchar * argv[])
+{
+  GstElement *pipeline, *filesrc, *decodebin;
+  GstStateChangeReturn res;
+
+  gst_init (&argc, &argv);
+
+  pipeline = gst_pipeline_new ("pipeline");
+
+  filesrc = gst_element_factory_make ("filesrc", "filesrc");
+  g_assert (filesrc);
+  decodebin = gst_element_factory_make ("decodebin", "decodebin");
+  g_assert (decodebin);
+
+  g_signal_connect (G_OBJECT (decodebin), "new-decoded-pad",
+      G_CALLBACK (cb_newpad), pipeline);
+
+  gst_bin_add_many (GST_BIN (pipeline), filesrc, decodebin, NULL);
+  gst_element_link (filesrc, decodebin);
+
+  if (argc < 2) {
+    g_print ("usage: %s <uri>\n", argv[0]);
+    exit (-1);
+  }
+  g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
+
+  /* set to paused, decodebin will autoplug and signal new_pad callbacks */
+  res = gst_element_set_state (pipeline, GST_STATE_PAUSED);
+  if (res == GST_STATE_CHANGE_FAILURE) {
+    g_print ("could not pause\n");
+    return -1;
+  }
+  /* wait for paused to complete */
+  res = gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE);
+  if (res == GST_STATE_CHANGE_FAILURE) {
+    g_print ("could not pause\n");
+    return -1;
+  }
+
+  /* play, now all the sinks are added to the pipeline and are prerolled and
+   * ready to play. */
+  res = gst_element_set_state (pipeline, GST_STATE_PLAYING);
+  if (res == GST_STATE_CHANGE_FAILURE) {
+    g_print ("could not play\n");
+    return -1;
+  }
+
+  /* go in the mainloop now */
+  loop = g_main_loop_new (NULL, TRUE);
+  g_main_loop_run (loop);
+
+  return 0;
+}