/pidgin/main: 3827fccb2f2b: mediamanager: register static elements

Changeset: 3827fccb2f2bc308b36bd473944de803bea498d6
Author:	 Jakub Adam <[email protected]>
Date:	 2016-06-22 12:09 +0200
Branch:	 default
URL: https://hg.pidgin.im/pidgin/main/rev/3827fccb2f2b

Description:

mediamanager: register static elements

These are source/sink elements which aren't dynamically inserted or
removed as the devices managed by GstDeviceMonitor come and go. Namely
they are default source and sinks (which represent their respective
"autodetect" GStreamer elements), audio and video test signal sources,
and video outputs (XVideo, OpenGL, DirectDraw, etc.).

diffstat:

 libpurple/mediamanager.c |  183 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 181 insertions(+), 2 deletions(-)

diffs (221 lines):

diff --git a/libpurple/mediamanager.c b/libpurple/mediamanager.c
--- a/libpurple/mediamanager.c
+++ b/libpurple/mediamanager.c
@@ -121,6 +121,7 @@ static void free_appdata_info_locked (Pu
 #endif
 #ifdef USE_GSTREAMER
 static void purple_media_manager_init_device_monitor(PurpleMediaManager *manager);
+static void purple_media_manager_register_static_elements(PurpleMediaManager *manager);
 #endif
 
 static GObjectClass *parent_class = NULL;
@@ -218,6 +219,7 @@ purple_media_manager_init (PurpleMediaMa
 #endif
 #ifdef USE_GSTREAMER
 	if (gst_init_check(NULL, NULL, &error)) {
+		purple_media_manager_register_static_elements(media);
 		purple_media_manager_init_device_monitor(media);
 	} else {
 		purple_debug_error("mediamanager",
@@ -1878,8 +1880,6 @@ purple_media_manager_receive_application
 
 #ifdef USE_GSTREAMER
 
-#if GST_CHECK_VERSION(1, 4, 0)
-
 static void
 videosink_disable_last_sample(GstElement *sink)
 {
@@ -1890,6 +1890,8 @@ videosink_disable_last_sample(GstElement
 	}
 }
 
+#if GST_CHECK_VERSION(1, 4, 0)
+
 static PurpleMediaElementType
 gst_class_to_purple_element_type(const gchar *device_class)
 {
@@ -2140,6 +2142,183 @@ purple_media_manager_enumerate_elements(
 	return result;
 }
 
+static GstElement *
+gst_factory_make_cb(PurpleMediaElementInfo *info, PurpleMedia *media,
+		const gchar *session_id, const gchar *participant)
+{
+	gchar *id;
+	GstElement *element;
+
+	id = purple_media_element_info_get_id(info);
+
+	element = gst_element_factory_make(id, NULL);
+
+	g_free(id);
+
+	return element;
+}
+
+static void
+autovideosink_child_added_cb (GstChildProxy *child_proxy, GObject *object,
+		gchar *name, gpointer user_data)
+{
+	videosink_disable_last_sample(GST_ELEMENT(object));
+}
+
+static GstElement *
+default_video_sink_create_cb(PurpleMediaElementInfo *info, PurpleMedia *media,
+		const gchar *session_id, const gchar *participant)
+{
+	GstElement *videosink = gst_element_factory_make("autovideosink", NULL);
+
+	g_signal_connect(videosink, "child-added",
+			G_CALLBACK(autovideosink_child_added_cb), NULL);
+
+	return videosink;
+}
+
+static GstElement *
+disabled_video_create_cb(PurpleMediaElementInfo *info, PurpleMedia *media,
+		const gchar *session_id, const gchar *participant)
+{
+	GstElement *src = gst_element_factory_make("videotestsrc", NULL);
+
+	/* GST_VIDEO_TEST_SRC_BLACK */
+	g_object_set(src, "pattern", 2, NULL);
+
+	return src;
+}
+
+static GstElement *
+test_video_create_cb(PurpleMediaElementInfo *info, PurpleMedia *media,
+		const gchar *session_id, const gchar *participant)
+{
+	GstElement *src = gst_element_factory_make("videotestsrc", NULL);
+
+	g_object_set(src, "is-live", TRUE, NULL);
+
+	return src;
+}
+
+static void
+purple_media_manager_register_static_elements(PurpleMediaManager *manager)
+{
+	static const gchar *VIDEO_SINK_PLUGINS[] = {
+		/* "aasink", "AALib", Didn't work for me */
+		"directdrawsink", "DirectDraw",
+		"glimagesink", "OpenGL",
+		"ximagesink", "X Window System",
+		"xvimagesink", "X Window System (Xv)",
+		NULL
+	};
+	const gchar **sinks = VIDEO_SINK_PLUGINS;
+
+	/* Default auto* elements. */
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "autoaudiosrc",
+			"name", N_("Default"),
+			"type", PURPLE_MEDIA_ELEMENT_AUDIO
+				| PURPLE_MEDIA_ELEMENT_SRC
+				| PURPLE_MEDIA_ELEMENT_ONE_SRC
+				| PURPLE_MEDIA_ELEMENT_UNIQUE,
+			"create-cb", gst_factory_make_cb,
+			NULL));
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "autoaudiosink",
+			"name", N_("Default"),
+			"type", PURPLE_MEDIA_ELEMENT_AUDIO
+					| PURPLE_MEDIA_ELEMENT_SINK
+					| PURPLE_MEDIA_ELEMENT_ONE_SINK,
+			"create-cb", gst_factory_make_cb,
+			NULL));
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "autovideosrc",
+			"name", N_("Default"),
+			"type", PURPLE_MEDIA_ELEMENT_VIDEO
+				| PURPLE_MEDIA_ELEMENT_SRC
+				| PURPLE_MEDIA_ELEMENT_ONE_SRC
+				| PURPLE_MEDIA_ELEMENT_UNIQUE,
+			"create-cb", gst_factory_make_cb,
+			NULL));
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "autovideosink",
+			"name", N_("Default"),
+			"type", PURPLE_MEDIA_ELEMENT_VIDEO
+				| PURPLE_MEDIA_ELEMENT_SINK
+				| PURPLE_MEDIA_ELEMENT_ONE_SINK,
+			"create-cb", default_video_sink_create_cb,
+			NULL));
+
+	/* Special elements */
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "audiotestsrc",
+			/* Translators: This is a noun that refers to one
+			 * possible audio input device. The user can employ the
+			 * device to sanity check basic audio functionality
+			 * within the libpurple client. */
+			"name", N_("Test Sound"),
+			"type", PURPLE_MEDIA_ELEMENT_AUDIO
+				| PURPLE_MEDIA_ELEMENT_SRC
+				| PURPLE_MEDIA_ELEMENT_ONE_SRC,
+			"create-cb", gst_factory_make_cb,
+			NULL));
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "disabledvideosrc",
+			"name", N_("Disabled"),
+			"type", PURPLE_MEDIA_ELEMENT_VIDEO
+				| PURPLE_MEDIA_ELEMENT_SRC
+				| PURPLE_MEDIA_ELEMENT_ONE_SINK,
+			"create-cb", disabled_video_create_cb,
+			NULL));
+
+	purple_media_manager_register_element(manager,
+		g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+			"id", "videotestsrc",
+			/* Translators: This is a noun that refers to one
+			 * possible video input device. The user can employ the
+			 * device to sanity check basic video functionality
+			 * within the libpurple client. */
+			"name", N_("Test Pattern"),
+			"type", PURPLE_MEDIA_ELEMENT_VIDEO
+				| PURPLE_MEDIA_ELEMENT_SRC
+				| PURPLE_MEDIA_ELEMENT_ONE_SRC,
+			"create-cb", test_video_create_cb,
+			NULL));
+
+	for (sinks = VIDEO_SINK_PLUGINS; sinks[0]; sinks += 2) {
+		GstElementFactory *factory;
+
+		factory = gst_element_factory_find(sinks[0]);
+		if (!factory) {
+			continue;
+		}
+
+		purple_media_manager_register_element(manager,
+			g_object_new(PURPLE_TYPE_MEDIA_ELEMENT_INFO,
+				"id", sinks[0],
+				"name", sinks[1],
+				"type", PURPLE_MEDIA_ELEMENT_VIDEO
+					| PURPLE_MEDIA_ELEMENT_SINK
+					| PURPLE_MEDIA_ELEMENT_ONE_SINK,
+				"create-cb", gst_factory_make_cb,
+				NULL));
+
+		gst_object_unref(factory);
+	}
+}
+
 /*
  * PurpleMediaElementType
  */

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