我正在使用gst-rtsp-server,我希望能够从服务器关闭正在进行的流。我正在尝试使用gst_rtsp_client_close()
函数。但是,当我调用它时,应用程序有时会变得无法响应。在日志中,我可以看到:GLib-CRITICAL **: g_main_context_unref: assertion 'g_atomic_int_get (&context->ref_count) > 0' failed
。
我修改了test-uri示例以触发此问题。每当客户端连接时,都会启动一个计时器。当计时器用完时,将为该客户端调用gst_rtsp_client_close()
。
/* 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>
#include <gst/rtsp-server/rtsp-media-factory-uri.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}
};
static void
client_closed(GstRTSPClient *client,
gpointer user_data)
{
g_print("client closed %p\n", client);
}
static gboolean
disconnect (GstRTSPClient * client)
{
g_print("disconnect client %p\n", client);
gst_rtsp_client_close(client);
return FALSE;
}
static void
client_connected(GstRTSPServer *server,
GstRTSPClient *client,
gpointer user_data)
{
g_print("client connected %p\n", client);
g_signal_connect(client, "closed", (GCallback)client_closed,
NULL);
g_timeout_add_seconds (8, (GSourceFunc) disconnect, client);
}
int
main (int argc, gchar * argv[])
{
GMainLoop *loop;
GstRTSPServer *server;
GstRTSPMountPoints *mounts;
GstRTSPMediaFactoryURI *factory;
GOptionContext *optctx;
GError *error = NULL;
gchar *uri;
guint major;
guint minor;
guint micro;
guint nano;
gst_version(&major, &minor, µ, &nano);
g_print("%s started. GST version %u.%u.%u.%u\n", argv[0], major, minor, micro, nano);
optctx = g_option_context_new ("<uri> - Test RTSP Server, URI");
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);
if (argc < 2) {
g_printerr ("Please pass an URI or file as argument!\n");
return -1;
}
loop = g_main_loop_new (NULL, FALSE);
/* create a server instance */
server = gst_rtsp_server_new ();
g_object_set (server, "service", port, NULL);
g_signal_connect(server, "client-connected", (GCallback)client_connected,
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 URI media factory for a test stream. */
factory = gst_rtsp_media_factory_uri_new ();
/* check if URI is valid, otherwise convert filename to URI if it's a file */
if (gst_uri_is_valid (argv[1])) {
uri = g_strdup (argv[1]);
} else if (g_file_test (argv[1], G_FILE_TEST_EXISTS)) {
uri = gst_filename_to_uri (argv[1], NULL);
} else {
g_printerr ("Unrecognised command line argument '%s'.\n"
"Please pass an URI or file as argument!\n", argv[1]);
return -1;
}
gst_rtsp_media_factory_uri_set_uri (factory, uri);
g_free (uri);
/* attach the test factory to the /test url */
gst_rtsp_mount_points_add_factory (mounts, "/test",
GST_RTSP_MEDIA_FACTORY (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;
/* start serving */
g_print ("stream ready at rtsp://127.0.0.1:%s/test\n", port);
g_main_loop_run (loop);
return 0;
/* ERRORS */
failed:
{
g_print ("failed to attach the server\n");
return -1;
}
}
我使用以下代码启动应用程序:./close-test-uri.out ~/Videos/big_buck_bunny.mp4
然后我使用客户端(VLC)连接到RTSP流:vlc -vvv "rtsp://127.0.0.1:8554/test"
视频将开始播放,8秒后它将(如预期的那样)断开连接。但是,如前所述,我收到了严重错误,应用程序无响应(有时会崩溃)。
我是以错误的方式使用gst_rtsp_client_close()
吗?
提前谢谢!