gstreamer/gst/rtsp-server/rtsp-onvif-client.c
Sebastian Dröge 72dc8acd86 rtsp: Add support for ONVIF backchannel
This adds a new RTSP server, client, media-factory and media subclass
for handling the specifics of the backchannel. Ideally this later can be
extended with other ONVIF specific features.
2018-02-16 11:04:53 +02:00

100 lines
3 KiB
C

/* GStreamer
* Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "rtsp-onvif-client.h"
#include "rtsp-onvif-server.h"
#include "rtsp-onvif-media-factory.h"
G_DEFINE_TYPE (GstRTSPOnvifClient, gst_rtsp_onvif_client, GST_TYPE_RTSP_CLIENT);
static gchar *
gst_rtsp_onvif_client_check_requirements (GstRTSPClient * client,
GstRTSPContext * ctx, gchar ** requirements)
{
GstRTSPMountPoints *mount_points = NULL;
GstRTSPMediaFactory *factory = NULL;
gchar *path = NULL;
gboolean has_backchannel = FALSE;
GString *unsupported = g_string_new ("");
while (*requirements) {
if (strcmp (*requirements, GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT) == 0) {
has_backchannel = TRUE;
} else {
if (unsupported->len)
g_string_append (unsupported, ", ");
g_string_append (unsupported, *requirements);
}
requirements++;
}
if (unsupported->len)
goto out;
mount_points = gst_rtsp_client_get_mount_points (client);
if (!(path = gst_rtsp_mount_points_make_path (mount_points, ctx->uri)))
goto out;
if (!(factory = gst_rtsp_mount_points_match (mount_points, path, NULL)))
goto out;
if (has_backchannel && !GST_IS_RTSP_ONVIF_MEDIA_FACTORY (factory)) {
if (unsupported->len)
g_string_append (unsupported, ", ");
g_string_append (unsupported, GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT);
} else if (has_backchannel) {
GstRTSPOnvifMediaFactory *onvif_factory =
GST_RTSP_ONVIF_MEDIA_FACTORY (factory);
if (!gst_rtsp_onvif_media_factory_has_backchannel_support (onvif_factory)) {
if (unsupported->len)
g_string_append (unsupported, ", ");
g_string_append (unsupported, GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT);
}
}
out:
if (path)
g_free (path);
if (factory)
g_object_unref (factory);
if (mount_points)
g_object_unref (mount_points);
return g_string_free (unsupported, FALSE);
}
static void
gst_rtsp_onvif_client_class_init (GstRTSPOnvifClientClass * klass)
{
GstRTSPClientClass *client_klass = (GstRTSPClientClass *) klass;
client_klass->check_requirements = gst_rtsp_onvif_client_check_requirements;
}
static void
gst_rtsp_onvif_client_init (GstRTSPOnvifClient * client)
{
}