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268 lines
7.5 KiB
C
268 lines
7.5 KiB
C
/* GStreamer
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* Copyright (C) <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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/*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "gstrtspext.h"
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GST_DEBUG_CATEGORY_STATIC (rtspext_debug);
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#define GST_CAT_DEFAULT (rtspext_debug)
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static GList *extensions;
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static gboolean
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gst_rtsp_ext_list_filter (GstPluginFeature * feature, gpointer user_data)
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{
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GstElementFactory *factory;
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guint rank;
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/* we only care about element factories */
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if (!GST_IS_ELEMENT_FACTORY (feature))
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return FALSE;
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factory = GST_ELEMENT_FACTORY (feature);
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if (!gst_element_factory_has_interface (factory, "GstRTSPExtension"))
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return FALSE;
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/* only select elements with autoplugging rank */
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rank = gst_plugin_feature_get_rank (feature);
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if (rank < GST_RANK_MARGINAL)
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return FALSE;
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return TRUE;
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}
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void
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gst_rtsp_ext_list_init (void)
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{
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GST_DEBUG_CATEGORY_INIT (rtspext_debug, "rtspext", 0, "RTSP extension");
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/* get a list of all extensions */
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extensions = gst_registry_feature_filter (gst_registry_get (),
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(GstPluginFeatureFilter) gst_rtsp_ext_list_filter, FALSE, NULL);
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}
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GstRTSPExtensionList *
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gst_rtsp_ext_list_get (void)
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{
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GstRTSPExtensionList *result;
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GList *walk;
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result = g_new0 (GstRTSPExtensionList, 1);
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for (walk = extensions; walk; walk = g_list_next (walk)) {
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GstElementFactory *factory = GST_ELEMENT_FACTORY (walk->data);
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GstElement *element;
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element = gst_element_factory_create (factory, NULL);
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if (!element) {
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GST_ERROR ("could not create extension instance");
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continue;
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}
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GST_DEBUG ("added extension interface for '%s'",
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GST_ELEMENT_NAME (element));
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result->extensions = g_list_prepend (result->extensions, element);
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}
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return result;
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}
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void
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gst_rtsp_ext_list_free (GstRTSPExtensionList * ext)
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{
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GList *walk;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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gst_object_unref (GST_OBJECT_CAST (elem));
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}
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g_list_free (ext->extensions);
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g_free (ext);
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}
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gboolean
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gst_rtsp_ext_list_detect_server (GstRTSPExtensionList * ext,
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GstRTSPMessage * resp)
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{
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GList *walk;
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gboolean res = TRUE;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_detect_server (elem, resp);
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_before_send (GstRTSPExtensionList * ext, GstRTSPMessage * req)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_before_send (elem, req);
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_after_send (GstRTSPExtensionList * ext, GstRTSPMessage * req,
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GstRTSPMessage * resp)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_after_send (elem, req, resp);
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_parse_sdp (GstRTSPExtensionList * ext, GstSDPMessage * sdp,
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GstStructure * s)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_parse_sdp (elem, sdp, s);
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_setup_media (GstRTSPExtensionList * ext, GstSDPMedia * media)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_setup_media (elem, media);
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}
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return res;
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}
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gboolean
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gst_rtsp_ext_list_configure_stream (GstRTSPExtensionList * ext, GstCaps * caps)
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{
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GList *walk;
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gboolean res = TRUE;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_configure_stream (elem, caps);
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if (!res)
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break;
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_get_transports (GstRTSPExtensionList * ext,
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GstRTSPLowerTrans protocols, gchar ** transport)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_get_transports (elem, protocols, transport);
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}
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return res;
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}
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GstRTSPResult
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gst_rtsp_ext_list_stream_select (GstRTSPExtensionList * ext, GstRTSPUrl * url)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_OK;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_stream_select (elem, url);
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}
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return res;
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}
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void
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gst_rtsp_ext_list_connect (GstRTSPExtensionList * ext,
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const gchar * detailed_signal, GCallback c_handler, gpointer data)
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{
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GList *walk;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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g_signal_connect (elem, detailed_signal, c_handler, data);
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}
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}
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GstRTSPResult
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gst_rtsp_ext_list_receive_request (GstRTSPExtensionList * ext,
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GstRTSPMessage * req)
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{
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GList *walk;
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GstRTSPResult res = GST_RTSP_ENOTIMPL;
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for (walk = ext->extensions; walk; walk = g_list_next (walk)) {
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GstRTSPExtension *elem = (GstRTSPExtension *) walk->data;
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res = gst_rtsp_extension_receive_request (elem, req);
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if (res != GST_RTSP_ENOTIMPL)
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break;
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}
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return res;
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}
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