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/* GStreamer
* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.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-rtspwms
*
* A WMS RTSP extension
*
* Last reviewed on 2007-07-25 (0.10.14)
*/
#include <string.h>
#include <gst/rtsp/gstrtspextension.h>
#include "gstrtspwms.h"
GST_DEBUG_CATEGORY_STATIC (rtspwms_debug);
#define GST_CAT_DEFAULT (rtspwms_debug)
#define SERVER_PREFIX "WMServer/"
#define HEADER_PREFIX "data:application/vnd.ms.wms-hdr.asfv1;base64,"
#define EXTENSION_CMD "application/x-wms-extension-cmd"
static GstRTSPResult
gst_rtsp_wms_before_send (GstRTSPExtension * ext, GstRTSPMessage * request)
{
GstRTSPWMS *ctx = (GstRTSPWMS *) 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_wms_after_send (GstRTSPExtension * ext, GstRTSPMessage * req,
GstRTSPMessage * resp)
{
GstRTSPWMS *ctx = (GstRTSPWMS *) 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_wms_parse_sdp (GstRTSPExtension * ext, GstSDPMessage * sdp,
GstStructure * props)
{
const gchar *config, *maxps;
gint i;
GstRTSPWMS *ctx = (GstRTSPWMS *) ext;
if (!ctx->active)
return GST_RTSP_OK;
for (i = 0; (config = gst_sdp_message_get_attribute_val_n (sdp, "pgmpu", i));
i++) {
if (g_str_has_prefix (config, HEADER_PREFIX)) {
config += strlen (HEADER_PREFIX);
gst_structure_set (props, "config", G_TYPE_STRING, config, NULL);
break;
}
}
if (config == NULL)
goto no_config;
gst_structure_set (props, "config", G_TYPE_STRING, config, NULL);
maxps = gst_sdp_message_get_attribute_val (sdp, "maxps");
if (maxps)
gst_structure_set (props, "maxps", G_TYPE_STRING, maxps, NULL);
gst_structure_set (props, "encoding-name", G_TYPE_STRING, "X-ASF-PF", NULL);
gst_structure_set (props, "media", G_TYPE_STRING, "application", NULL);
return GST_RTSP_OK;
/* ERRORS */
no_config:
{
GST_DEBUG_OBJECT (ctx, "Could not find config SDP field, deactivating.");
ctx->active = FALSE;
return GST_RTSP_OK;
}
}
static gboolean
gst_rtsp_wms_configure_stream (GstRTSPExtension * ext, GstCaps * caps)
{
GstRTSPWMS *ctx;
GstStructure *s;
const gchar *encoding;
ctx = (GstRTSPWMS *) ext;
s = gst_caps_get_structure (caps, 0);
encoding = gst_structure_get_string (s, "encoding-name");
if (!encoding)
return TRUE;
GST_DEBUG_OBJECT (ctx, "%" GST_PTR_FORMAT " encoding-name: %s", caps,
encoding);
/* rtx streams do not need to be configured */
if (!strcmp (encoding, "X-WMS-RTX"))
return FALSE;
return TRUE;
}
static GstRTSPResult
gst_rtsp_wms_receive_request (GstRTSPExtension * ext, GstRTSPMessage * request)
{
GstRTSPWMS *ctx;
GstRTSPResult res = GST_RTSP_ENOTIMPL;
GstRTSPMessage response = { 0 };
ctx = (GstRTSPWMS *) ext;
GST_DEBUG_OBJECT (ext, "before send");
switch (request->type_data.request.method) {
case GST_RTSP_SET_PARAMETER:
{
gchar *content_type = NULL;
gst_rtsp_message_get_header (request, GST_RTSP_HDR_CONTENT_TYPE,
&content_type, 0);
if (content_type && !g_ascii_strcasecmp (content_type, EXTENSION_CMD)) {
/* parse the command */
/* default implementation, send OK */
res = gst_rtsp_message_init_response (&response, GST_RTSP_STS_OK, "OK",
request);
if (res < 0)
goto send_error;
GST_DEBUG_OBJECT (ctx, "replying with OK");
/* send reply */
if ((res = gst_rtsp_extension_send (ext, request, &response)) < 0)
goto send_error;
res = GST_RTSP_EEOF;
}
break;
}
default:
break;
}
return res;
send_error:
{
return res;
}
}
static void gst_rtsp_wms_extension_init (gpointer g_iface, gpointer iface_data);
G_DEFINE_TYPE_WITH_CODE (GstRTSPWMS, gst_rtsp_wms, GST_TYPE_ELEMENT,
G_IMPLEMENT_INTERFACE (GST_TYPE_RTSP_EXTENSION,
gst_rtsp_wms_extension_init));
static void
gst_rtsp_wms_class_init (GstRTSPWMSClass * g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GST_DEBUG_CATEGORY_INIT (rtspwms_debug, "rtspwms", 0, "WMS RTSP extension");
gst_element_class_set_static_metadata (element_class, "WMS RTSP Extension",
"Network/Extension/Protocol",
"Extends RTSP so that it can handle WMS setup",
"Wim Taymans <wim.taymans@gmail.com>");
}
static void
gst_rtsp_wms_init (GstRTSPWMS * rtspwms)
{
}
static void
gst_rtsp_wms_extension_init (gpointer g_iface, gpointer iface_data)
{
GstRTSPExtensionInterface *iface = (GstRTSPExtensionInterface *) g_iface;
iface->parse_sdp = gst_rtsp_wms_parse_sdp;
iface->before_send = gst_rtsp_wms_before_send;
iface->after_send = gst_rtsp_wms_after_send;
iface->configure_stream = gst_rtsp_wms_configure_stream;
iface->receive_request = gst_rtsp_wms_receive_request;
}
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