sip: Add media manager and sipify origin

* pipeline: we should bind the used socket of our udpsink to the socket udpsrc

plugins/sip/calls-sip-media-manager.h

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 Purism SPC
+ *
+ * This file is part of Calls.
+ *
+ * Calls is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Calls 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Calls.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Evangelos Ribeiro Tzaras <evangelos.tzaras@puri.sm>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ *
+ */
+
+#pragma once
+
+#include "gst-rfc3551.h"
+
+#include <sofia-sip/nua.h>
+#include <glib-object.h>
+
+#define CALLS_TYPE_SIP_MEDIA_MANAGER (calls_sip_media_manager_get_type ())
+
+G_DECLARE_FINAL_TYPE (CallsSipMediaManager, calls_sip_media_manager, CALLS, SIP_MEDIA_MANAGER, GObject)
+
+
+CallsSipMediaManager* calls_sip_media_manager_default                       (void);
+gchar*                calls_sip_media_manager_static_capabilities           (CallsSipMediaManager *self,
+                                                                             guint port,
+                                                                             gboolean use_srtp);
+gboolean              calls_sip_media_manager_supports_media                (CallsSipMediaManager *self,
+                                                                             const char *media_type);
+void                  calls_sip_media_manager_activate_media                (CallsSipMediaManager *self);
+void                  calls_sip_media_manager_deactivate_media              (CallsSipMediaManager *self);
+MediaCodecInfo*       get_best_codec                                        (CallsSipMediaManager *self);