put in gconf sinks

Original commit message from CVS:
put in gconf sinks

1 files changed, 195 insertions, 0 deletions

diff --git a/ext/gconf/gstgconfaudiosink.c b/ext/gconf/gstgconfaudiosink.c
new file mode 100644
index 00000000..1db9a138
--- /dev/null
+++ b/ext/gconf/gstgconfaudiosink.c
@@ -0,0 +1,195 @@
+/* GStreamer
+ * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * 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 "gstgconfelements.h"
+#include "gstgconfaudiosink.h"
+
+static void gst_gconf_audio_sink_base_init (GstGConfAudioSinkClass * klass);
+static void gst_gconf_audio_sink_class_init (GstGConfAudioSinkClass * klass);
+static void gst_gconf_audio_sink_init (GstGConfAudioSink * sink);
+static void gst_gconf_audio_sink_dispose (GObject * object);
+
+static void cb_toggle_element (GConfClient * client,
+    guint connection_id, GConfEntry * entry, gpointer data);
+
+static GstElementStateReturn
+gst_gconf_audio_sink_change_state (GstElement * element);
+
+static GstBinClass *parent_class = NULL;
+
+GType
+gst_gconf_audio_sink_get_type (void)
+{
+  static GType gst_gconf_audio_sink_type = 0;
+
+  if (!gst_gconf_audio_sink_type) {
+    static const GTypeInfo gst_gconf_audio_sink_info = {
+      sizeof (GstGConfAudioSinkClass),
+      (GBaseInitFunc) gst_gconf_audio_sink_base_init,
+      NULL,
+      (GClassInitFunc) gst_gconf_audio_sink_class_init,
+      NULL,
+      NULL,
+      sizeof (GstGConfAudioSink),
+      0,
+      (GInstanceInitFunc) gst_gconf_audio_sink_init,
+    };
+
+    gst_gconf_audio_sink_type = g_type_register_static (GST_TYPE_BIN,
+        "GstGConfAudioSink", &gst_gconf_audio_sink_info, 0);
+  }
+
+  return gst_gconf_audio_sink_type;
+}
+
+static void
+gst_gconf_audio_sink_base_init (GstGConfAudioSinkClass * klass)
+{
+  GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+  GstElementDetails gst_gconf_audio_sink_details = {
+    "GConf audio sink",
+    "Sink/Audio",
+    "Audio sink embedding the GConf-settings for audio output",
+    "Ronald Bultje <rbultje@ronald.bitfreak.net>"
+  };
+  GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
+      GST_PAD_SINK,
+      GST_PAD_ALWAYS,
+      GST_STATIC_CAPS_ANY);
+
+  gst_element_class_add_pad_template (eklass,
+      gst_static_pad_template_get (&sink_template));
+  gst_element_class_set_details (eklass, &gst_gconf_audio_sink_details);
+}
+
+static void
+gst_gconf_audio_sink_class_init (GstGConfAudioSinkClass * klass)
+{
+  GObjectClass *oklass = G_OBJECT_CLASS (klass);
+  GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
+
+  parent_class = g_type_class_ref (GST_TYPE_BIN);
+
+  oklass->dispose = gst_gconf_audio_sink_dispose;
+  eklass->change_state = gst_gconf_audio_sink_change_state;
+}
+
+static void
+gst_gconf_audio_sink_init (GstGConfAudioSink * sink)
+{
+  sink->pad = NULL;
+  sink->kid = NULL;
+
+  sink->client = gconf_client_get_default ();
+  gconf_client_add_dir (sink->client, GST_GCONF_DIR,
+      GCONF_CLIENT_PRELOAD_RECURSIVE, NULL);
+  gconf_client_notify_add (sink->client, GST_GCONF_DIR "/default/audiosink",
+      cb_toggle_element, sink, NULL, NULL);
+  cb_toggle_element (sink->client, 0, NULL, sink);
+
+  sink->init = FALSE;
+}
+
+static void
+gst_gconf_audio_sink_dispose (GObject * object)
+{
+  GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (object);
+
+  if (sink->client) {
+    g_object_unref (G_OBJECT (sink->client));
+    sink->client = NULL;
+  }
+
+  G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+cb_toggle_element (GConfClient * client,
+    guint connection_id, GConfEntry * entry, gpointer data)
+{
+  GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (data);
+  GstPad *peer = NULL;
+  GstElementState state = GST_STATE (sink);
+
+  /* save ghostpad */
+  if (sink->pad) {
+    gst_object_ref (GST_OBJECT (sink->pad));
+    peer = GST_PAD_PEER (GST_PAD_REALIZE (sink->pad));
+    if (peer)
+      gst_pad_unlink (peer, sink->pad);
+  }
+
+  /* kill old element */
+  if (sink->kid) {
+    GST_DEBUG_OBJECT (sink, "Removing old kid");
+    gst_bin_remove (GST_BIN (sink), sink->kid);
+    sink->kid = NULL;
+  }
+
+  GST_DEBUG_OBJECT (sink, "Creating new kid (%ssink)",
+      entry ? "audio" : "fake");
+  sink->kid = entry ? gst_gconf_get_default_audio_sink () :
+      gst_element_factory_make ("fakesink", "temporary-element");
+  if (!sink->kid) {
+    GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
+        ("Failed to render audio sink from GConf"));
+    return;
+  }
+  gst_bin_add (GST_BIN (sink), sink->kid);
+
+  /* re-attach ghostpad */
+  if (sink->pad) {
+    GST_DEBUG_OBJECT (sink, "Re-doing existing ghostpad");
+    gst_pad_add_ghost_pad (gst_element_get_pad (sink->kid, "sink"), sink->pad);
+  } else {
+    GST_DEBUG_OBJECT (sink, "Creating new ghostpad");
+    sink->pad = gst_ghost_pad_new ("sink",
+        gst_element_get_pad (sink->kid, "sink"));
+    gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
+  }
+  if (peer) {
+    GST_DEBUG_OBJECT (sink, "Linking...");
+    gst_pad_link (peer, sink->pad);
+  }
+  GST_DEBUG_OBJECT (sink, "Syncing state");
+  gst_element_set_state (GST_ELEMENT (sink), state);
+
+  GST_DEBUG_OBJECT (sink, "done changing gconf audio sink");
+  sink->init = TRUE;
+}
+
+static GstElementStateReturn
+gst_gconf_audio_sink_change_state (GstElement * element)
+{
+  GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (element);
+
+  if (GST_STATE_TRANSITION (element) == GST_STATE_NULL_TO_READY && !sink->init) {
+    cb_toggle_element (sink->client, 0,
+        gconf_client_get_entry (sink->client,
+            GST_GCONF_DIR "/default/audiosink", NULL, TRUE, NULL), sink);
+    if (!sink->init)
+      return GST_STATE_FAILURE;
+  }
+
+  return GST_ELEMENT_CLASS (parent_class)->change_state (element);
+}