nx平台视频推流

#include
#include rtsp-server/rtsp-server.h>
#define DEFAULT_RTSP_PORT "8554"
​//./test-launch2 --gst-debug-level=3 "(v4l2src device=/dev/video2 ! nvvidconv ! omxh265enc  !  rtph265pay name=pay0 pt=0 )"
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 (" - 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]);
​
   //新增加 客户端之间共享管道 不用重新建立
  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;
}

编译：

//gcc test-launch2.c -o test-launch2 $(pkg-config --cflags --libs gstreamer-rtsp-server-1.0 gstreamer-1.0)

硬件解码：
./test-launch2 --gst-debug-level=3 "(v4l2src device=/dev/video2 ! nvvidconv ! omxh264enc  !  rtph264pay name=pay0 pt=0 )"

软件解码：
./test-launch2 --gst-debug-level=3 "( v4l2src device=/dev/video2 ! videoconvert! videoscale ! video/x-raw, width=640, height=480, framerate=25/1 ! queue ! x264enc bitrate=2048 !  rtph264pay name=pay0 pt=96 )"