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240 lines
6.2 KiB
C
240 lines
6.2 KiB
C
/* GStreamer
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* Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/* Element-Checklist-Version: 5 */
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/**
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* SECTION:element-rtspwms
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* @title: rtspwms
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*
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* A WMS RTSP extension
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*/
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#include <string.h>
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#include <gst/rtsp/gstrtspextension.h>
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#include "gstasfelements.h"
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#include "gstrtspwms.h"
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GST_DEBUG_CATEGORY_STATIC (rtspwms_debug);
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#define GST_CAT_DEFAULT (rtspwms_debug)
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#define SERVER_PREFIX "WMServer/"
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#define HEADER_PREFIX "data:application/vnd.ms.wms-hdr.asfv1;base64,"
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#define EXTENSION_CMD "application/x-wms-extension-cmd"
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static GstRTSPResult
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gst_rtsp_wms_before_send (GstRTSPExtension * ext, GstRTSPMessage * request)
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{
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GstRTSPWMS *ctx = (GstRTSPWMS *) ext;
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GST_DEBUG_OBJECT (ext, "before send");
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switch (request->type_data.request.method) {
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case GST_RTSP_OPTIONS:
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{
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/* activate ourselves with the first request */
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ctx->active = TRUE;
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break;
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}
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default:
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break;
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}
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return GST_RTSP_OK;
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}
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static GstRTSPResult
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gst_rtsp_wms_after_send (GstRTSPExtension * ext, GstRTSPMessage * req,
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GstRTSPMessage * resp)
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{
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GstRTSPWMS *ctx = (GstRTSPWMS *) ext;
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GST_DEBUG_OBJECT (ext, "after send");
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switch (req->type_data.request.method) {
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case GST_RTSP_OPTIONS:
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{
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gchar *server = NULL;
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gst_rtsp_message_get_header (resp, GST_RTSP_HDR_SERVER, &server, 0);
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if (server && g_str_has_prefix (server, SERVER_PREFIX))
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ctx->active = TRUE;
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else
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ctx->active = FALSE;
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break;
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}
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default:
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break;
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}
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return GST_RTSP_OK;
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}
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static GstRTSPResult
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gst_rtsp_wms_parse_sdp (GstRTSPExtension * ext, GstSDPMessage * sdp,
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GstStructure * props)
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{
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const gchar *config, *maxps;
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gint i;
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GstRTSPWMS *ctx = (GstRTSPWMS *) ext;
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if (!ctx->active)
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return GST_RTSP_OK;
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for (i = 0; (config = gst_sdp_message_get_attribute_val_n (sdp, "pgmpu", i));
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i++) {
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if (g_str_has_prefix (config, HEADER_PREFIX)) {
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config += strlen (HEADER_PREFIX);
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gst_structure_set (props, "config", G_TYPE_STRING, config, NULL);
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break;
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}
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}
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if (config == NULL)
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goto no_config;
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gst_structure_set (props, "config", G_TYPE_STRING, config, NULL);
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maxps = gst_sdp_message_get_attribute_val (sdp, "maxps");
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if (maxps)
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gst_structure_set (props, "maxps", G_TYPE_STRING, maxps, NULL);
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gst_structure_set (props, "encoding-name", G_TYPE_STRING, "X-ASF-PF", NULL);
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gst_structure_set (props, "media", G_TYPE_STRING, "application", NULL);
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return GST_RTSP_OK;
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/* ERRORS */
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no_config:
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{
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GST_DEBUG_OBJECT (ctx, "Could not find config SDP field, deactivating.");
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ctx->active = FALSE;
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return GST_RTSP_OK;
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}
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}
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static gboolean
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gst_rtsp_wms_configure_stream (GstRTSPExtension * ext, GstCaps * caps)
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{
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GstRTSPWMS *ctx;
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GstStructure *s;
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const gchar *encoding;
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ctx = (GstRTSPWMS *) ext;
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s = gst_caps_get_structure (caps, 0);
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encoding = gst_structure_get_string (s, "encoding-name");
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if (!encoding)
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return TRUE;
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GST_DEBUG_OBJECT (ctx, "%" GST_PTR_FORMAT " encoding-name: %s", caps,
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encoding);
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/* rtx streams do not need to be configured */
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if (!strcmp (encoding, "X-WMS-RTX"))
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return FALSE;
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return TRUE;
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}
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static GstRTSPResult
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gst_rtsp_wms_receive_request (GstRTSPExtension * ext, GstRTSPMessage * request)
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{
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GstRTSPWMS *ctx;
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GstRTSPResult res = GST_RTSP_ENOTIMPL;
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GstRTSPMessage response = { 0 };
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ctx = (GstRTSPWMS *) ext;
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GST_DEBUG_OBJECT (ext, "before send");
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switch (request->type_data.request.method) {
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case GST_RTSP_SET_PARAMETER:
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{
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gchar *content_type = NULL;
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gst_rtsp_message_get_header (request, GST_RTSP_HDR_CONTENT_TYPE,
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&content_type, 0);
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if (content_type && !g_ascii_strcasecmp (content_type, EXTENSION_CMD)) {
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/* parse the command */
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/* default implementation, send OK */
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res = gst_rtsp_message_init_response (&response, GST_RTSP_STS_OK, "OK",
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request);
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if (res < 0)
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goto send_error;
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GST_DEBUG_OBJECT (ctx, "replying with OK");
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/* send reply */
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if ((res = gst_rtsp_extension_send (ext, request, &response)) < 0)
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goto send_error;
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res = GST_RTSP_EEOF;
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}
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break;
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}
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default:
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break;
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}
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return res;
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send_error:
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{
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return res;
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}
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}
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static void gst_rtsp_wms_extension_init (gpointer g_iface, gpointer iface_data);
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G_DEFINE_TYPE_WITH_CODE (GstRTSPWMS, gst_rtsp_wms, GST_TYPE_ELEMENT,
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G_IMPLEMENT_INTERFACE (GST_TYPE_RTSP_EXTENSION,
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gst_rtsp_wms_extension_init));
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (rtspwms, "rtspwms", GST_RANK_SECONDARY,
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GST_TYPE_RTSP_WMS, asf_element_init (plugin));
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static void
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gst_rtsp_wms_class_init (GstRTSPWMSClass * g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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GST_DEBUG_CATEGORY_INIT (rtspwms_debug, "rtspwms", 0, "WMS RTSP extension");
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gst_element_class_set_static_metadata (element_class, "WMS RTSP Extension",
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"Network/Extension/Protocol",
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"Extends RTSP so that it can handle WMS setup",
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"Wim Taymans <wim.taymans@gmail.com>");
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}
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static void
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gst_rtsp_wms_init (GstRTSPWMS * rtspwms)
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{
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}
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static void
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gst_rtsp_wms_extension_init (gpointer g_iface, gpointer iface_data)
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{
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GstRTSPExtensionInterface *iface = (GstRTSPExtensionInterface *) g_iface;
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iface->parse_sdp = gst_rtsp_wms_parse_sdp;
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iface->before_send = gst_rtsp_wms_before_send;
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iface->after_send = gst_rtsp_wms_after_send;
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iface->configure_stream = gst_rtsp_wms_configure_stream;
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iface->receive_request = gst_rtsp_wms_receive_request;
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}
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