Add simple rtsp server

Makefile

@@ -54,6 +54,9 @@ wfb_tx_cmd: src/tx_cmd.o
 wfb_tun: src/wfb_tun.o
 	$(CC) -o $@ $^ $(LDFLAGS) -levent_core
 
+wfb_rtsp: src/rtsp_server.c
+	$(CC) $(shell pkg-config --cflags gstreamer-rtsp-server-1.0) -o $@ $^ $(shell pkg-config --libs gstreamer-rtsp-server-1.0)
+
 test: all_bin
 	PYTHONPATH=`pwd` trial3 wfb_ng.tests
 

scripts/systemd/rtsp@.service

@@ -0,0 +1,14 @@
+[Unit]
+Description=WFB-ng %i RTSP server
+After=network-online.target
+
+[Service]
+ExecStart=/usr/bin/wfb_rtsp %i
+Type=simple
+Restart=always
+RestartSec=1s
+TimeoutStopSec=10s
+KillMode=control-group
+
+[Install]
+WantedBy=multi-user.target

src/rtsp_server.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
+ * Copyright (C) 2025 Vasily Evseenko <svpcom@p2ptech.org>
+
+ *   This program 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; version 3.
+ *
+ *   This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <stdio.h>
+#include <gst/gst.h>
+#include <gst/rtsp-server/rtsp-server.h>
+
+/* this timeout is periodically run to clean up the expired sessions from the
+ * pool. This needs to be run explicitly currently but might be done
+ * automatically as part of the mainloop. */
+
+static gboolean
+timeout (GstRTSPServer * server)
+{
+    GstRTSPSessionPool *pool;
+
+    pool = gst_rtsp_server_get_session_pool (server);
+    gst_rtsp_session_pool_cleanup (pool);
+    g_object_unref (pool);
+
+    return TRUE;
+}
+
+int
+main (int argc, char *argv[])
+{
+    GMainLoop *loop;
+    GstRTSPServer *server;
+    GstRTSPMountPoints *mounts;
+    GstRTSPMediaFactory *factory;
+    int mode;
+    char buf[2048];
+
+    gst_init (&argc, &argv);
+
+    if(argc != 2 || (strcmp(argv[1], "h264") != 0 && strcmp(argv[1], "h265") != 0))
+    {
+        fprintf(stderr, "Usage: %s (h264 | h265)\n", argv[0]);
+        exit(1);
+    }
+
+    mode = atoi(argv[1] + 1);
+    loop = g_main_loop_new (NULL, FALSE);
+
+    /* create a server instance */
+    server = gst_rtsp_server_new ();
+
+    /* get the mount points for this server, every server has a default object
+     * that be used to map uri mount points to media factories */
+    mounts = gst_rtsp_server_get_mount_points (server);
+
+    /* make a media factory for a test stream. The default media factory can use
+     * gst-launch syntax to create pipelines.
+     * any launch line works as long as it contains elements named pay%d. Each
+     * element with pay%d names will be a stream */
+
+    factory = gst_rtsp_media_factory_new ();
+
+    snprintf(buf, sizeof(buf),
+             "( udpsrc port=5600 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H%d ! rtph%ddepay ! rtph%dpay name=pay0 pt=96 )",
+             mode, mode, mode);
+
+    gst_rtsp_media_factory_set_launch (factory, buf);
+    gst_rtsp_media_factory_set_shared (factory, TRUE);
+
+    /* attach the test factory to the /test url */
+    gst_rtsp_mount_points_add_factory (mounts, "/wfb", factory);
+
+    /* don't need the ref to the mapper anymore */
+    g_object_unref (mounts);
+
+    /* attach the server to the default maincontext */
+    if (gst_rtsp_server_attach (server, NULL) == 0)
+        goto failed;
+
+    /* add a timeout for the session cleanup */
+    g_timeout_add_seconds (2, (GSourceFunc) timeout, server);
+
+    /* start serving, this never stops */
+    g_print ("H%d stream ready at rtsp://127.0.0.1:8554/wfb\n", mode);
+    g_main_loop_run (loop);
+
+    return 0;
+
+    /* ERRORS */
+failed:
+    {
+        g_print ("failed to attach the server\n");
+        return -1;
+    }
+}