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/* GStreamer
* Copyright (C) <2008> Wim Taymans <wim.taymans@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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/* Element-Checklist-Version: 5 */
/**
* SECTION:element-rtspgoogle
*
* A Google RTSP extension
*
* Last reviewed on 2008-08-20 (0.10.10)
*/
#include <string.h>
#include <gst/rtsp/gstrtspextension.h>
#include "gstrtspgoogle.h"
GST_DEBUG_CATEGORY_STATIC (rtspgoogle_debug);
#define GST_CAT_DEFAULT (rtspgoogle_debug)
/* elementfactory information */
static const GstElementDetails rtspgoogle_details =
GST_ELEMENT_DETAILS ("Google RTSP Extension",
"Network/Extension/Protocol",
"Extends RTSP so that it can handle Google setup",
"Wim Taymans <wim.taymans@gmail.com>");
#define SERVER_PREFIX "Google RTSP"
static GstRTSPResult
gst_rtsp_google_before_send (GstRTSPExtension * ext, GstRTSPMessage * request)
{
GstRTSPGoogle *ctx = (GstRTSPGoogle *) ext;
GST_DEBUG_OBJECT (ext, "before send");
switch (request->type_data.request.method) {
case GST_RTSP_OPTIONS:
{
/* activate ourselves with the first request */
ctx->active = TRUE;
break;
}
default:
break;
}
return GST_RTSP_OK;
}
static GstRTSPResult
gst_rtsp_google_after_send (GstRTSPExtension * ext, GstRTSPMessage * req,
GstRTSPMessage * resp)
{
GstRTSPGoogle *ctx = (GstRTSPGoogle *) ext;
GST_DEBUG_OBJECT (ext, "after send");
switch (req->type_data.request.method) {
case GST_RTSP_OPTIONS:
{
gchar *server = NULL;
gst_rtsp_message_get_header (resp, GST_RTSP_HDR_SERVER, &server, 0);
if (server && g_str_has_prefix (server, SERVER_PREFIX))
ctx->active = TRUE;
else
ctx->active = FALSE;
break;
}
default:
break;
}
return GST_RTSP_OK;
}
static GstRTSPResult
gst_rtsp_google_get_transports (GstRTSPExtension * ext,
GstRTSPLowerTrans protocols, gchar ** transport)
{
GstRTSPResult res;
GstRTSPGoogle *ctx = (GstRTSPGoogle *) ext;
GString *result;
if (!ctx->active)
return GST_RTSP_OK;
/* always only suggest UDP */
if (protocols & GST_RTSP_LOWER_TRANS_UDP) {
result = g_string_new ("");
GST_DEBUG_OBJECT (ext, "adding UDP unicast");
g_string_append (result, "RTP/AVP");
g_string_append (result, ";unicast;client_port=%%u1-%%u2");
*transport = g_string_free (result, FALSE);
res = GST_RTSP_OK;
} else {
res = GST_RTSP_ERROR;
}
return res;
}
static void gst_rtsp_google_finalize (GObject * object);
static GstStateChangeReturn gst_rtsp_google_change_state (GstElement * element,
GstStateChange transition);
static void gst_rtsp_google_extension_init (gpointer g_iface,
gpointer iface_data);
static void
_do_init (GType rtspgoogle_type)
{
static const GInterfaceInfo rtspextension_info = {
gst_rtsp_google_extension_init,
NULL,
NULL
};
g_type_add_interface_static (rtspgoogle_type, GST_TYPE_RTSP_EXTENSION,
&rtspextension_info);
}
GST_BOILERPLATE_FULL (GstRTSPGoogle, gst_rtsp_google, GstElement,
GST_TYPE_ELEMENT, _do_init);
static void
gst_rtsp_google_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_set_details (element_class, &rtspgoogle_details);
}
static void
gst_rtsp_google_class_init (GstRTSPGoogleClass * g_class)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstRTSPGoogleClass *klass;
klass = (GstRTSPGoogleClass *) g_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gobject_class->finalize = gst_rtsp_google_finalize;
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_rtsp_google_change_state);
GST_DEBUG_CATEGORY_INIT (rtspgoogle_debug, "rtspgoogle", 0,
"Google RTSP extension");
}
static void
gst_rtsp_google_init (GstRTSPGoogle * rtspgoogle, GstRTSPGoogleClass * klass)
{
}
static void
gst_rtsp_google_finalize (GObject * object)
{
GstRTSPGoogle *rtspgoogle;
rtspgoogle = GST_RTSP_GOOGLE (object);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstStateChangeReturn
gst_rtsp_google_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstRTSPGoogle *rtspgoogle;
rtspgoogle = GST_RTSP_GOOGLE (element);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return ret;
}
static void
gst_rtsp_google_extension_init (gpointer g_iface, gpointer iface_data)
{
GstRTSPExtensionInterface *iface = (GstRTSPExtensionInterface *) g_iface;
iface->before_send = gst_rtsp_google_before_send;
iface->after_send = gst_rtsp_google_after_send;
iface->get_transports = gst_rtsp_google_get_transports;
}
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