How to send video stream over UDP network by RTP

Thanks. I just checked and I use with the $, but still the smae error.

gcc test-launch.c -o test-launch $(pkg-config --cflags --libs gstreamer-1.0 gstreamer-rtsp-server-1.0)

error

warning: implicit declaration of function ‘gst_rtsp_media_factory_set_enable_rtcp’; did you mean ‘gst_rtsp_media_factory_set_latency’? [-Wimplicit-function-declaration]
gst_rtsp_media_factory_set_enable_rtcp (factory, !disable_rtcp);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gst_rtsp_media_factory_set_latency
/tmp/ccznBraB.o: In function main': test-launch.c:(.text+0x154): undefined reference to gst_rtsp_media_factory_set_enable_rtcp’
collect2: error: ld returned 1 exit status

What give these commands ?

sudo apt search gstreamer | grep rtsp
pkg-config --cflags --libs gstreamer-1.0
pkg-config --cflags --libs gstreamer-rtsp-server-1.0
1 Like

for sudo apt search gstreamer | grep rtsp

gir1.2-gst-rtsp-server-1.0/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 arm64 [installed,automatic]
gstreamer1.0-rtsp/bionic-updates 1.14.5-0ubuntu1~18.04.1 arm64
gstreamer1.0-rtsp-dbg/bionic-updates 1.14.5-0ubuntu1~18.04.1 arm64
libgstrtspserver-1.0-0/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 arm64 [installed]
libgstrtspserver-1.0-0-dbg/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 arm64 [installed]
libgstrtspserver-1.0-dev/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 arm64 [installed]
libgstrtspserver-1.0-doc/bionic-updates,now 1.14.5-0ubuntu1~18.04.1 all [installed]

for pkg-config --cflags --libs gstreamer-1.0

-pthread -I/usr/include/gstreamer-1.0 -I/usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0

for pkg-config --cflags --libs gstreamer-rtsp-server-1.0

-pthread -I/usr/include/gstreamer-1.0 -I/usr/include/glib-2.0 -I/usr/lib/aarch64-linux-gnu/glib-2.0/include -lgstrtspserver-1.0 -lgstbase-1.0 -lgstreamer-1.0 -lgobject-2.0 -lglib-2.0

Seems ok.
Is your test-launch.c file different from this ?

/* GStreamer
 * Copyright (C) 2008 Wim Taymans <wim.taymans at gmail.com>
 *
 * 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., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include <gst/gst.h>

#include <gst/rtsp-server/rtsp-server.h>

#define DEFAULT_RTSP_PORT "8554"

static char *port = (char *) DEFAULT_RTSP_PORT;

static GOptionEntry entries[] = {
  {"port", 'p', 0, G_OPTION_ARG_STRING, &port,
      "Port to listen on (default: " DEFAULT_RTSP_PORT ")", "PORT"},
  {NULL}
};

int
main (int argc, char *argv[])
{
  GMainLoop *loop;
  GstRTSPServer *server;
  GstRTSPMountPoints *mounts;
  GstRTSPMediaFactory *factory;
  GOptionContext *optctx;
  GError *error = NULL;

  optctx = g_option_context_new ("<launch line> - Test RTSP Server, Launch\n\n"
      "Example: \"( videotestsrc ! x264enc ! rtph264pay name=pay0 pt=96 )\"");
  g_option_context_add_main_entries (optctx, entries, NULL);
  g_option_context_add_group (optctx, gst_init_get_option_group ());
  if (!g_option_context_parse (optctx, &argc, &argv, &error)) {
    g_printerr ("Error parsing options: %s\n", error->message);
    g_option_context_free (optctx);
    g_clear_error (&error);
    return -1;
  }
  g_option_context_free (optctx);

  loop = g_main_loop_new (NULL, FALSE);

  /* create a server instance */
  server = gst_rtsp_server_new ();
  g_object_set (server, "service", port, NULL);

  /* 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 ();
  gst_rtsp_media_factory_set_launch (factory, argv[1]);
  gst_rtsp_media_factory_set_shared (factory, TRUE);

  /* attach the test factory to the /test url */
  gst_rtsp_mount_points_add_factory (mounts, "/test", factory);

  /* don't need the ref to the mapper anymore */
  g_object_unref (mounts);

  /* attach the server to the default maincontext */
  gst_rtsp_server_attach (server, NULL);

  /* start serving */
  g_print ("stream ready at rtsp://127.0.0.1:%s/test\n", port);
  g_main_loop_run (loop);

  return 0;
}

2 Likes

haha…! yes , that was it!

I got the code directly from gst-rtsp-server/test-launch.c at master · GStreamer/gst-rtsp-server · GitHub and it has some differences with your code.

I copied your code instead and that was it! now it works!

thank you very much for your help

1 Like
  • This is because of the different versions of the reason. I’m glad you’ve solved it

I was having exactly the same problem. I mean… I couldn’t find the function declared anywhere.
That becomes clear when you compile with:

g++ -I/usr/include/gstreamer-1.0/ -I/usr/include/glib-2.0/ -I/usr/lib/aarch64-linux-gnu/glib-2.0/include/ test-launch.c -o test-launch
    test-launch.c:77:3: error: ‘gst_rtsp_media_factory_set_enable_rtcp’ was not declared in this scope
       gst_rtsp_media_factory_set_enable_rtcp (factory, !disable_rtcp);

This wouldn’t link the to the libraries anyway, because there are no library paths included in the compilation command but it was clear that the method was not nowhere in the *.h included.