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/* 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_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);
GST_BOILERPLATE (GstGConfAudioSink, gst_gconf_audio_sink, GstBin, GST_TYPE_BIN);
static void
gst_gconf_audio_sink_base_init (gpointer 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);
oklass->dispose = gst_gconf_audio_sink_dispose;
eklass->change_state = gst_gconf_audio_sink_change_state;
}
/*
* Hack to make negotiation work.
*/
static void
gst_gconf_audio_sink_reset (GstGConfAudioSink * sink)
{
GstPad *targetpad;
/* fakesink */
if (sink->kid) {
gst_bin_remove (GST_BIN (sink), sink->kid);
}
sink->kid = gst_element_factory_make ("fakesink", "testsink");
gst_bin_add (GST_BIN (sink), sink->kid);
targetpad = gst_element_get_pad (sink->kid, "sink");
gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
gst_object_unref (targetpad);
}
static void
gst_gconf_audio_sink_init (GstGConfAudioSink * sink)
{
sink->pad = gst_ghost_pad_new_notarget ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
gst_gconf_audio_sink_reset (sink);
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);
}
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;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static gboolean
do_toggle_element (GstGConfAudioSink * sink)
{
GstPad *targetpad;
/* 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");
if (!(sink->kid = gst_gconf_get_default_audio_sink ())) {
GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
("Failed to render audio sink from GConf"));
return FALSE;
}
gst_element_set_state (sink->kid, GST_STATE (sink));
gst_bin_add (GST_BIN (sink), sink->kid);
/* re-attach ghostpad */
GST_DEBUG_OBJECT (sink, "Creating new ghostpad");
targetpad = gst_element_get_pad (sink->kid, "sink");
gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
gst_object_unref (targetpad);
GST_DEBUG_OBJECT (sink, "done changing gconf audio sink");
return TRUE;
}
static void
cb_toggle_element (GConfClient * client,
guint connection_id, GConfEntry * entry, gpointer data)
{
do_toggle_element (GST_GCONF_AUDIO_SINK (data));
}
static GstElementStateReturn
gst_gconf_audio_sink_change_state (GstElement * element)
{
GstGConfAudioSink *sink = GST_GCONF_AUDIO_SINK (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!do_toggle_element (sink))
return GST_STATE_FAILURE;
break;
case GST_STATE_READY_TO_NULL:
gst_gconf_audio_sink_reset (sink);
break;
default:
break;
}
return GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element), GST_STATE_SUCCESS);
}
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