2 * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
3 * (c) 2005 Tim-Philipp Müller <tim centricular net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 * Boston, MA 02111-1307, USA.
21 * SECTION:element-gconfaudiosrc
22 * @see_also: #GstAlsaSrc, #GstAutoAudioSrc
24 * This element records sound from the audiosink that has been configured in
28 * <title>Example launch line</title>
30 * gst-launch gconfaudiosrc ! audioconvert ! wavenc ! filesink location=record.wav
31 * ]| Record from configured audioinput
41 #include "gstgconfelements.h"
42 #include "gstgconfaudiosrc.h"
44 static void gst_gconf_audio_src_dispose (GObject * object);
45 static void gst_gconf_audio_src_finalize (GstGConfAudioSrc * src);
46 static void cb_toggle_element (GConfClient * client,
47 guint connection_id, GConfEntry * entry, gpointer data);
48 static GstStateChangeReturn
49 gst_gconf_audio_src_change_state (GstElement * element,
50 GstStateChange transition);
52 GST_BOILERPLATE (GstGConfAudioSrc, gst_gconf_audio_src, GstSwitchSrc,
56 gst_gconf_audio_src_base_init (gpointer klass)
58 GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
60 gst_element_class_set_details_simple (eklass, "GConf audio source",
62 "Audio source embedding the GConf-settings for audio input",
63 "GStreamer maintainers <gstreamer-devel@lists.sourceforge.net>");
67 gst_gconf_audio_src_class_init (GstGConfAudioSrcClass * klass)
69 GObjectClass *oklass = G_OBJECT_CLASS (klass);
70 GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
72 oklass->dispose = gst_gconf_audio_src_dispose;
73 oklass->finalize = (GObjectFinalizeFunc) gst_gconf_audio_src_finalize;
74 eklass->change_state = gst_gconf_audio_src_change_state;
78 * Hack to make negotiation work.
82 gst_gconf_audio_src_reset (GstGConfAudioSrc * src)
84 gst_switch_src_set_child (GST_SWITCH_SRC (src), NULL);
86 g_free (src->gconf_str);
87 src->gconf_str = NULL;
92 gst_gconf_audio_src_init (GstGConfAudioSrc * src,
93 GstGConfAudioSrcClass * g_class)
95 gst_gconf_audio_src_reset (src);
97 src->client = gconf_client_get_default ();
98 gconf_client_add_dir (src->client, GST_GCONF_DIR,
99 GCONF_CLIENT_PRELOAD_RECURSIVE, NULL);
100 src->gconf_notify_id = gconf_client_notify_add (src->client,
101 GST_GCONF_DIR "/" GST_GCONF_AUDIOSRC_KEY,
102 cb_toggle_element, src, NULL, NULL);
106 gst_gconf_audio_src_dispose (GObject * object)
108 GstGConfAudioSrc *src = GST_GCONF_AUDIO_SRC (object);
111 if (src->gconf_notify_id) {
112 gconf_client_notify_remove (src->client, src->gconf_notify_id);
113 src->gconf_notify_id = 0;
116 g_object_unref (G_OBJECT (src->client));
120 GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
124 gst_gconf_audio_src_finalize (GstGConfAudioSrc * src)
126 g_free (src->gconf_str);
128 GST_CALL_PARENT (G_OBJECT_CLASS, finalize, ((GObject *) (src)));
132 do_toggle_element (GstGConfAudioSrc * src)
135 gchar *new_gconf_str;
137 new_gconf_str = gst_gconf_get_string (GST_GCONF_AUDIOSRC_KEY);
138 if (new_gconf_str != NULL && src->gconf_str != NULL &&
139 (strlen (new_gconf_str) == 0 ||
140 strcmp (src->gconf_str, new_gconf_str) == 0)) {
141 g_free (new_gconf_str);
142 GST_DEBUG_OBJECT (src, "GConf key was updated, but it didn't change");
146 GST_DEBUG_OBJECT (src, "GConf key changed: '%s' to '%s'",
147 GST_STR_NULL (src->gconf_str), GST_STR_NULL (new_gconf_str));
149 GST_DEBUG_OBJECT (src, "Creating new kid");
150 if (!(new_kid = gst_gconf_get_default_audio_src ())) {
151 GST_ELEMENT_ERROR (src, LIBRARY, SETTINGS, (NULL),
152 ("Failed to render audio src from GConf"));
156 if (!gst_switch_src_set_child (GST_SWITCH_SRC (src), new_kid)) {
157 GST_WARNING_OBJECT (src, "Failed to update child element");
161 g_free (src->gconf_str);
162 src->gconf_str = new_gconf_str;
164 GST_DEBUG_OBJECT (src, "done changing gconf audio src");
168 g_free (new_gconf_str);
173 cb_toggle_element (GConfClient * client,
174 guint connection_id, GConfEntry * entry, gpointer data)
176 do_toggle_element (GST_GCONF_AUDIO_SRC (data));
179 static GstStateChangeReturn
180 gst_gconf_audio_src_change_state (GstElement * element,
181 GstStateChange transition)
183 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
184 GstGConfAudioSrc *src = GST_GCONF_AUDIO_SRC (element);
186 switch (transition) {
187 case GST_STATE_CHANGE_NULL_TO_READY:
188 if (!do_toggle_element (src)) {
189 gst_gconf_audio_src_reset (src);
190 return GST_STATE_CHANGE_FAILURE;
197 ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
198 (element, transition), GST_STATE_CHANGE_SUCCESS);
200 switch (transition) {
201 case GST_STATE_CHANGE_READY_TO_NULL:
202 if (!gst_gconf_audio_src_reset (src))
203 ret = GST_STATE_CHANGE_FAILURE;