diff options
author | Tim-Philipp Müller <tim@centricular.net> | 2006-01-06 16:28:30 +0000 |
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committer | Tim-Philipp Müller <tim@centricular.net> | 2006-01-06 16:28:30 +0000 |
commit | cc627c9c818eed1ebac140036e4a3fe767acbe18 (patch) | |
tree | 2c180b6a6a9459caeefe654d1ee9a039902f1173 /ext/gconf/gstgconfvideosrc.c | |
parent | c6b9d19c3100c3600243526986f9adb205bc55e1 (diff) |
ext/gconf/: Add new gconfaudiosrc and gconfvideosrc elements (needed for gnome-sound-recorder).
Original commit message from CVS:
* ext/gconf/Makefile.am:
* ext/gconf/gstgconfaudiosrc.c: (gst_gconf_audio_src_base_init),
(gst_gconf_audio_src_class_init), (gst_gconf_audio_src_reset),
(gst_gconf_audio_src_init), (gst_gconf_audio_src_dispose),
(do_toggle_element), (cb_toggle_element),
(gst_gconf_audio_src_change_state):
* ext/gconf/gstgconfaudiosrc.h:
* ext/gconf/gstgconfelements.c: (plugin_init):
* ext/gconf/gstgconfvideosrc.c: (gst_gconf_video_src_base_init),
(gst_gconf_video_src_class_init), (gst_gconf_video_src_reset),
(gst_gconf_video_src_init), (gst_gconf_video_src_dispose),
(do_toggle_element), (cb_toggle_element),
(gst_gconf_video_src_change_state):
* ext/gconf/gstgconfvideosrc.h:
Add new gconfaudiosrc and gconfvideosrc elements
(needed for gnome-sound-recorder).
Diffstat (limited to 'ext/gconf/gstgconfvideosrc.c')
-rw-r--r-- | ext/gconf/gstgconfvideosrc.c | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/ext/gconf/gstgconfvideosrc.c b/ext/gconf/gstgconfvideosrc.c new file mode 100644 index 00000000..ecc3cc27 --- /dev/null +++ b/ext/gconf/gstgconfvideosrc.c @@ -0,0 +1,185 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2005 Tim-Philipp Müller <tim centricular 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 "gstgconfvideosrc.h" + +static void gst_gconf_video_src_dispose (GObject * object); +static void cb_toggle_element (GConfClient * client, + guint connection_id, GConfEntry * entry, gpointer data); +static GstStateChangeReturn +gst_gconf_video_src_change_state (GstElement * element, + GstStateChange transition); + +GST_BOILERPLATE (GstGConfVideoSrc, gst_gconf_video_src, GstBin, GST_TYPE_BIN); + +static void +gst_gconf_video_src_base_init (gpointer klass) +{ + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + GstElementDetails gst_gconf_video_src_details = { + "GConf video source", + "Source/Video", + "Video source embedding the GConf-settings for video input", + "Ronald Bultje <rbultje@ronald.bitfreak.net>" + }; + GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + + gst_element_class_add_pad_template (eklass, + gst_static_pad_template_get (&src_template)); + gst_element_class_set_details (eklass, &gst_gconf_video_src_details); +} + +static void +gst_gconf_video_src_class_init (GstGConfVideoSrcClass * klass) +{ + GObjectClass *oklass = G_OBJECT_CLASS (klass); + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + + oklass->dispose = gst_gconf_video_src_dispose; + eklass->change_state = gst_gconf_video_src_change_state; +} + +/* + * Hack to make negotiation work. + */ + +static void +gst_gconf_video_src_reset (GstGConfVideoSrc * src) +{ + GstPad *targetpad; + + /* fakesrc */ + if (src->kid) { + gst_element_set_state (src->kid, GST_STATE_NULL); + gst_bin_remove (GST_BIN (src), src->kid); + } + src->kid = gst_element_factory_make ("fakesrc", "testsrc"); + gst_bin_add (GST_BIN (src), src->kid); + + targetpad = gst_element_get_pad (src->kid, "src"); + gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad); + gst_object_unref (targetpad); +} + +static void +gst_gconf_video_src_init (GstGConfVideoSrc * src, + GstGConfVideoSrcClass * g_class) +{ + src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC); + gst_element_add_pad (GST_ELEMENT (src), src->pad); + + gst_gconf_video_src_reset (src); + + src->client = gconf_client_get_default (); + gconf_client_add_dir (src->client, GST_GCONF_DIR, + GCONF_CLIENT_PRELOAD_RECURSIVE, NULL); + gconf_client_notify_add (src->client, GST_GCONF_DIR "/default/videosrc", + cb_toggle_element, src, NULL, NULL); +} + +static void +gst_gconf_video_src_dispose (GObject * object) +{ + GstGConfVideoSrc *src = GST_GCONF_VIDEO_SRC (object); + + if (src->client) { + g_object_unref (G_OBJECT (src->client)); + src->client = NULL; + } + + GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object)); +} + +static gboolean +do_toggle_element (GstGConfVideoSrc * src) +{ + GstPad *targetpad; + + /* kill old element */ + if (src->kid) { + GST_DEBUG_OBJECT (src, "Removing old kid"); + gst_element_set_state (src->kid, GST_STATE_NULL); + gst_bin_remove (GST_BIN (src), src->kid); + src->kid = NULL; + } + + GST_DEBUG_OBJECT (src, "Creating new kid"); + if (!(src->kid = gst_gconf_get_default_video_src ())) { + GST_ELEMENT_ERROR (src, LIBRARY, SETTINGS, (NULL), + ("Failed to render video source from GConf")); + return FALSE; + } + gst_element_set_state (src->kid, GST_STATE (src)); + gst_bin_add (GST_BIN (src), src->kid); + + /* re-attach ghostpad */ + GST_DEBUG_OBJECT (src, "Creating new ghostpad"); + targetpad = gst_element_get_pad (src->kid, "src"); + gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad); + gst_object_unref (targetpad); + GST_DEBUG_OBJECT (src, "done changing gconf video source"); + + return TRUE; +} + +static void +cb_toggle_element (GConfClient * client, + guint connection_id, GConfEntry * entry, gpointer data) +{ + do_toggle_element (GST_GCONF_VIDEO_SRC (data)); +} + +static GstStateChangeReturn +gst_gconf_video_src_change_state (GstElement * element, + GstStateChange transition) +{ + GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; + GstGConfVideoSrc *src = GST_GCONF_VIDEO_SRC (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + if (!do_toggle_element (src)) + return GST_STATE_CHANGE_FAILURE; + break; + default: + break; + } + + ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state, + (element, transition), GST_STATE_CHANGE_SUCCESS); + + switch (transition) { + case GST_STATE_CHANGE_READY_TO_NULL: + gst_gconf_video_src_reset (src); + break; + default: + break; + } + + return ret; +} |