gstreamer/gst/rtsp/gstrtspext.c
Wim Taymans a8ee445da6 gst/rtsp/: Clean up the interface list.
Original commit message from CVS:
* gst/rtsp/gstrtspext.c: (gst_rtsp_ext_list_free),
(gst_rtsp_ext_list_connect):
* gst/rtsp/gstrtspext.h:
* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_init),
(gst_rtspsrc_finalize), (gst_rtspsrc_send_cb):
Clean up the interface list.
Allow connecting to interface signals for the extensions.
Remove old extension code.
Free list on cleanup.
Allow extensions to send additional RTSP messages.
2007-07-27 11:21:20 +00:00

249 lines
7.1 KiB
C

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