gstreamer/subprojects/gst-rtsp-server/gst/rtsp-server/rtsp-onvif-client.c

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/* 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;
gboolean has_replay = FALSE;
GString *unsupported = g_string_new ("");
while (*requirements) {
if (strcmp (*requirements, GST_RTSP_ONVIF_BACKCHANNEL_REQUIREMENT) == 0) {
has_backchannel = TRUE;
} else if (strcmp (*requirements, GST_RTSP_ONVIF_REPLAY_REQUIREMENT) == 0) {
has_replay = 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);
}
}
if (has_replay && !GST_IS_RTSP_ONVIF_MEDIA_FACTORY (factory)) {
if (unsupported->len)
g_string_append (unsupported, ", ");
g_string_append (unsupported, GST_RTSP_ONVIF_REPLAY_REQUIREMENT);
} else if (has_replay) {
GstRTSPOnvifMediaFactory *onvif_factory =
GST_RTSP_ONVIF_MEDIA_FACTORY (factory);
if (!gst_rtsp_onvif_media_factory_has_replay_support (onvif_factory)) {
if (unsupported->len)
g_string_append (unsupported, ", ");
g_string_append (unsupported, GST_RTSP_ONVIF_REPLAY_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 GstRTSPStatusCode
gst_rtsp_onvif_client_adjust_play_mode (GstRTSPClient * client,
GstRTSPContext * ctx, GstRTSPTimeRange ** range, GstSeekFlags * flags,
gdouble * rate, GstClockTime * trickmode_interval,
gboolean * enable_rate_control)
{
GstRTSPStatusCode ret = GST_RTSP_STS_BAD_REQUEST;
gchar **split = NULL;
gchar *str;
if (gst_rtsp_message_get_header (ctx->request, GST_RTSP_HDR_FRAMES,
&str, 0) == GST_RTSP_OK) {
split = g_strsplit (str, "/", 2);
if (!g_strcmp0 (split[0], "intra")) {
if (split[1]) {
guint64 interval;
gchar *end;
interval = g_ascii_strtoull (split[1], &end, 10);
if (!end || *end != '\0') {
GST_ERROR ("Unexpected interval value %s", split[1]);
goto done;
}
*trickmode_interval = interval * GST_MSECOND;
}
*flags |= GST_SEEK_FLAG_TRICKMODE_KEY_UNITS;
} else if (!g_strcmp0 (split[0], "predicted")) {
if (split[1]) {
GST_ERROR ("Predicted frames mode does not allow an interval (%s)",
str);
goto done;
}
*flags |= GST_SEEK_FLAG_TRICKMODE_FORWARD_PREDICTED;
} else {
GST_ERROR ("Invalid frames mode (%s)", str);
goto done;
}
}
if (gst_rtsp_message_get_header (ctx->request, GST_RTSP_HDR_RATE_CONTROL,
&str, 0) == GST_RTSP_OK) {
if (!g_strcmp0 (str, "no")) {
*enable_rate_control = FALSE;
} else if (!g_strcmp0 (str, "yes")) {
*enable_rate_control = TRUE;
} else {
GST_ERROR ("Invalid rate control header: %s", str);
goto done;
}
}
ret = GST_RTSP_STS_OK;
done:
if (split)
g_strfreev (split);
return ret;
}
static GstRTSPStatusCode
gst_rtsp_onvif_client_adjust_play_response (GstRTSPClient * client,
GstRTSPContext * ctx)
{
GstRTSPStatusCode ret = GST_RTSP_STS_OK;
gchar *str;
if (gst_rtsp_message_get_header (ctx->request, GST_RTSP_HDR_RATE_CONTROL,
&str, 0) == GST_RTSP_OK) {
gst_rtsp_message_add_header (ctx->response, GST_RTSP_HDR_RATE_CONTROL,
gst_rtsp_media_get_rate_control (ctx->media) ? "yes" : "no");
}
return ret;
}
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;
client_klass->adjust_play_mode = gst_rtsp_onvif_client_adjust_play_mode;
client_klass->adjust_play_response =
gst_rtsp_onvif_client_adjust_play_response;
}
static void
gst_rtsp_onvif_client_init (GstRTSPOnvifClient * client)
{
}
/**
* gst_rtsp_onvif_client_new:
*
* Create a new #GstRTSPOnvifClient instance.
*
* Returns: (transfer full): a new #GstRTSPOnvifClient
* Since: 1.18
*/
GstRTSPClient *
gst_rtsp_onvif_client_new (void)
{
GstRTSPClient *result;
result = g_object_new (GST_TYPE_RTSP_ONVIF_CLIENT, NULL);
return result;
}