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2f96504ff9
Original commit message from CVS: Based on Patch by: Tero Saarni <tero dot saarni at gmail dot com> * gst-libs/gst/sdp/gstsdpmessage.c: (gst_sdp_parse_line), (print_media), (gst_sdp_message_dump): Fix parsing of the c= field containing multicast addresses. Fixes #552199. Add the connection info to the session or streams. Fix parsing of the bandwidth. Add debugging for the connections and bandwidths for a media. Add debugging for the bandwidth of the session.
2040 lines
51 KiB
C
2040 lines
51 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, 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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/**
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* SECTION:gstsdpmessage
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* @short_description: Helper methods for dealing with SDP messages
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*
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* <refsect2>
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* <para>
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* The GstSDPMessage helper functions makes it easy to parse and create SDP
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* messages.
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* </para>
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* </refsect2>
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*
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* Last reviewed on 2007-07-24 (0.10.14)
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <glib.h> /* for G_OS_WIN32 */
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#include <gst/gstinfo.h> /* For GST_STR_NULL */
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#ifdef G_OS_WIN32
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#ifdef _MSC_VER
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#include <Winsock2.h>
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#endif
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/* ws2_32.dll has getaddrinfo and freeaddrinfo on Windows XP and later.
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* minwg32 headers check WINVER before allowing the use of these */
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#ifndef WINVER
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#define WINVER 0x0501
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#endif
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#include <ws2tcpip.h>
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#else
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#include <sys/socket.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#endif
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#include "gstsdpmessage.h"
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/* FIXME, is currently allocated on the stack */
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#define MAX_LINE_LEN 1024 * 16
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#define FREE_STRING(field) g_free (field); (field) = NULL
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#define REPLACE_STRING(field, val) FREE_STRING(field); (field) = g_strdup (val)
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#define INIT_ARRAY(field, type, init_func) \
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G_STMT_START { \
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if (field) { \
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guint i; \
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for(i = 0; i < (field)->len; i++) \
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init_func (&g_array_index ((field), type, i)); \
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g_array_set_size ((field), 0); \
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} \
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else \
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(field) = g_array_new (FALSE, TRUE, sizeof (type)); \
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} G_STMT_END
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#define FREE_ARRAY(field) \
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G_STMT_START { \
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if (field) \
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g_array_free ((field), TRUE); \
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(field) = NULL; \
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} G_STMT_END
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#define INIT_PTR_ARRAY(field, type, init_func) \
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G_STMT_START { \
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if (field) { \
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guint i; \
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for(i = 0; i < (field)->len; i++) \
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init_func (g_array_index ((field), type, i)); \
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g_array_set_size ((field), 0); \
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} \
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else \
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(field) = g_array_new (FALSE, TRUE, sizeof (type)); \
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} G_STMT_END
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#define FREE_PTR_ARRAY(field) FREE_ARRAY(field)
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#define DEFINE_STRING_SETTER(field) \
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GstSDPResult gst_sdp_message_set_##field (GstSDPMessage *msg, const gchar *val) { \
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g_free (msg->field); \
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msg->field = g_strdup (val); \
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return GST_SDP_OK; \
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}
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#define DEFINE_STRING_GETTER(field) \
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const gchar* gst_sdp_message_get_##field (const GstSDPMessage *msg) { \
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return msg->field; \
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}
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#define DEFINE_ARRAY_LEN(field) \
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guint gst_sdp_message_##field##_len (const GstSDPMessage *msg) { \
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return msg->field->len; \
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}
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#define DEFINE_ARRAY_GETTER(method, field, type) \
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type * gst_sdp_message_get_##method (const GstSDPMessage *msg, guint idx) { \
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return &g_array_index (msg->field, type, idx); \
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}
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#define DEFINE_PTR_ARRAY_LEN(field) DEFINE_ARRAY_LEN(field)
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#define DEFINE_PTR_ARRAY_GETTER(method, field, type) \
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type gst_sdp_message_get_##method (const GstSDPMessage *msg, guint idx) { \
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return g_array_index (msg->field, type, idx); \
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}
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#define DEFINE_PTR_ARRAY_ADDER(method, field, type, dup_method) \
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GstSDPResult gst_sdp_message_add_##method (GstSDPMessage *msg, type val) { \
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type v = dup_method (val); \
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g_array_append_val (msg->field, v); \
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return GST_SDP_OK; \
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}
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static void
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gst_sdp_origin_init (GstSDPOrigin * origin)
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{
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FREE_STRING (origin->username);
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FREE_STRING (origin->sess_id);
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FREE_STRING (origin->sess_version);
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FREE_STRING (origin->nettype);
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FREE_STRING (origin->addrtype);
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FREE_STRING (origin->addr);
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}
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static void
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gst_sdp_connection_init (GstSDPConnection * connection)
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{
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FREE_STRING (connection->nettype);
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FREE_STRING (connection->addrtype);
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FREE_STRING (connection->address);
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connection->ttl = 0;
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connection->addr_number = 0;
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}
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static void
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gst_sdp_bandwidth_init (GstSDPBandwidth * bandwidth)
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{
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FREE_STRING (bandwidth->bwtype);
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bandwidth->bandwidth = 0;
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}
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static void
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gst_sdp_time_init (GstSDPTime * t)
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{
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FREE_STRING (t->start);
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FREE_STRING (t->stop);
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INIT_PTR_ARRAY (t->repeat, gchar *, g_free);
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FREE_PTR_ARRAY (t->repeat);
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}
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static void
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gst_sdp_zone_init (GstSDPZone * zone)
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{
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FREE_STRING (zone->time);
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FREE_STRING (zone->typed_time);
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}
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static void
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gst_sdp_key_init (GstSDPKey * key)
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{
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FREE_STRING (key->type);
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FREE_STRING (key->data);
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}
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static void
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gst_sdp_attribute_init (GstSDPAttribute * attr)
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{
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FREE_STRING (attr->key);
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FREE_STRING (attr->value);
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}
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/**
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* gst_sdp_message_new:
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* @msg: pointer to new #GstSDPMessage
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*
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* Allocate a new GstSDPMessage and store the result in @msg.
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*
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* Returns: a #GstSDPResult.
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*/
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GstSDPResult
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gst_sdp_message_new (GstSDPMessage ** msg)
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{
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GstSDPMessage *newmsg;
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g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
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newmsg = g_new0 (GstSDPMessage, 1);
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*msg = newmsg;
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return gst_sdp_message_init (newmsg);
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}
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/**
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* gst_sdp_message_init:
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* @msg: a #GstSDPMessage
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*
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* Initialize @msg so that its contents are as if it was freshly allocated
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* with gst_sdp_message_new(). This function is mostly used to initialize a message
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* allocated on the stack. gst_sdp_message_uninit() undoes this operation.
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*
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* When this function is invoked on newly allocated data (with malloc or on the
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* stack), its contents should be set to 0 before calling this function.
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*
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* Returns: a #GstSDPResult.
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*/
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GstSDPResult
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gst_sdp_message_init (GstSDPMessage * msg)
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{
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g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
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FREE_STRING (msg->version);
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gst_sdp_origin_init (&msg->origin);
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FREE_STRING (msg->session_name);
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FREE_STRING (msg->information);
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FREE_STRING (msg->uri);
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INIT_PTR_ARRAY (msg->emails, gchar *, g_free);
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INIT_PTR_ARRAY (msg->phones, gchar *, g_free);
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gst_sdp_connection_init (&msg->connection);
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INIT_ARRAY (msg->bandwidths, GstSDPBandwidth, gst_sdp_bandwidth_init);
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INIT_ARRAY (msg->times, GstSDPTime, gst_sdp_time_init);
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INIT_ARRAY (msg->zones, GstSDPZone, gst_sdp_zone_init);
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gst_sdp_key_init (&msg->key);
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INIT_ARRAY (msg->attributes, GstSDPAttribute, gst_sdp_attribute_init);
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INIT_ARRAY (msg->medias, GstSDPMedia, gst_sdp_media_uninit);
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return GST_SDP_OK;
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}
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/**
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* gst_sdp_message_uninit:
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* @msg: a #GstSDPMessage
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*
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* Free all resources allocated in @msg. @msg should not be used anymore after
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* this function. This function should be used when @msg was allocated on the
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* stack and initialized with gst_sdp_message_init().
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*
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* Returns: a #GstSDPResult.
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*/
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GstSDPResult
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gst_sdp_message_uninit (GstSDPMessage * msg)
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{
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g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
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gst_sdp_message_init (msg);
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FREE_PTR_ARRAY (msg->emails);
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FREE_PTR_ARRAY (msg->phones);
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FREE_ARRAY (msg->bandwidths);
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FREE_ARRAY (msg->times);
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FREE_ARRAY (msg->zones);
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FREE_ARRAY (msg->attributes);
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FREE_ARRAY (msg->medias);
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return GST_SDP_OK;
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}
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/**
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* gst_sdp_message_free:
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* @msg: a #GstSDPMessage
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*
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* Free all resources allocated by @msg. @msg should not be used anymore after
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* this function. This function should be used when @msg was dynamically
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* allocated with gst_sdp_message_new().
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*
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* Returns: a #GstSDPResult.
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*/
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GstSDPResult
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gst_sdp_message_free (GstSDPMessage * msg)
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{
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g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
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gst_sdp_message_uninit (msg);
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g_free (msg);
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return GST_SDP_OK;
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}
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static gboolean
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is_multicast_address (const gchar * host_name, guint * family)
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{
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struct addrinfo hints;
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struct addrinfo *ai;
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struct addrinfo *res;
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gboolean ret = FALSE;
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int err;
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memset (&hints, 0, sizeof (hints));
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hints.ai_socktype = SOCK_DGRAM;
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g_return_val_if_fail (host_name, FALSE);
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if ((err = getaddrinfo (host_name, NULL, &hints, &res)) < 0)
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return FALSE;
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for (ai = res; !ret && ai; ai = ai->ai_next) {
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if (ai->ai_family == AF_INET)
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ret =
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IN_MULTICAST (ntohl (((struct sockaddr_in *) ai->ai_addr)->sin_addr.
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s_addr));
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else
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ret =
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IN6_IS_ADDR_MULTICAST (&((struct sockaddr_in6 *) ai->ai_addr)->
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sin6_addr);
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if (ret && family)
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*family = ai->ai_family;
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}
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freeaddrinfo (res);
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return ret;
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}
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/**
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* gst_sdp_message_as_text:
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* @msg: a #GstSDPMessage
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*
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* Convert the contents of @msg to a text string.
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*
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* Returns: A dynamically allocated string representing the SDP description.
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*/
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gchar *
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gst_sdp_message_as_text (const GstSDPMessage * msg)
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{
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/* change all vars so they match rfc? */
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GString *lines;
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guint i;
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g_return_val_if_fail (msg != NULL, NULL);
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lines = g_string_new ("");
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if (msg->version)
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g_string_append_printf (lines, "v=%s\r\n", msg->version);
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if (msg->origin.sess_id && msg->origin.sess_version && msg->origin.nettype &&
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msg->origin.addrtype && msg->origin.addr)
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g_string_append_printf (lines, "o=%s %s %s %s %s %s\r\n",
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msg->origin.username ? msg->origin.username : "-", msg->origin.sess_id,
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msg->origin.sess_version, msg->origin.nettype, msg->origin.addrtype,
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msg->origin.addr);
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if (msg->session_name)
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g_string_append_printf (lines, "s=%s\r\n", msg->session_name);
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if (msg->information)
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g_string_append_printf (lines, "i=%s\r\n", msg->information);
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if (msg->uri)
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g_string_append_printf (lines, "u=%s\r\n", msg->uri);
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for (i = 0; i < gst_sdp_message_emails_len (msg); i++)
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g_string_append_printf (lines, "e=%s\r\n",
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gst_sdp_message_get_email (msg, i));
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for (i = 0; i < gst_sdp_message_phones_len (msg); i++)
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g_string_append_printf (lines, "p=%s\r\n",
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gst_sdp_message_get_phone (msg, i));
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if (gst_sdp_message_emails_len (msg) == 0 &&
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gst_sdp_message_phones_len (msg) == 0)
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g_string_append_printf (lines, "e=NONE\r\n");
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if (msg->connection.nettype && msg->connection.addrtype &&
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msg->connection.address) {
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guint family;
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g_string_append_printf (lines, "c=%s %s %s", msg->connection.nettype,
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msg->connection.addrtype, msg->connection.address);
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if (is_multicast_address (msg->connection.address, &family)) {
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if (family == AF_INET)
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g_string_append_printf (lines, "/%u", msg->connection.ttl);
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if (msg->connection.addr_number > 1)
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g_string_append_printf (lines, "/%u", msg->connection.addr_number);
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}
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g_string_append_printf (lines, "\r\n");
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}
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for (i = 0; i < gst_sdp_message_bandwidths_len (msg); i++) {
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const GstSDPBandwidth *bandwidth = gst_sdp_message_get_bandwidth (msg, i);
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g_string_append_printf (lines, "b=%s:%u\r\n", bandwidth->bwtype,
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bandwidth->bandwidth);
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}
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for (i = 0; i < gst_sdp_message_times_len (msg); i++) {
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const GstSDPTime *times = gst_sdp_message_get_time (msg, i);
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g_string_append_printf (lines, "t=%s %s\r\n", times->start, times->stop);
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if (times->repeat != NULL) {
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guint j;
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g_string_append_printf (lines, "r=%s",
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g_array_index (times->repeat, gchar *, 0));
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for (j = 1; j < times->repeat->len; j++)
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g_string_append_printf (lines, " %s",
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g_array_index (times->repeat, gchar *, j));
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g_string_append_printf (lines, "\r\n");
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}
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}
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if (gst_sdp_message_zones_len (msg) > 0) {
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const GstSDPZone *zone = gst_sdp_message_get_zone (msg, 0);
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g_string_append_printf (lines, "z=%s %s", zone->time, zone->typed_time);
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for (i = 1; i < gst_sdp_message_zones_len (msg); i++) {
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zone = gst_sdp_message_get_zone (msg, i);
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g_string_append_printf (lines, " %s %s", zone->time, zone->typed_time);
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}
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g_string_append_printf (lines, "\r\n");
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}
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if (msg->key.type) {
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g_string_append_printf (lines, "k=%s", msg->key.type);
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if (msg->key.data)
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g_string_append_printf (lines, ":%s", msg->key.data);
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g_string_append_printf (lines, "\r\n");
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}
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for (i = 0; i < gst_sdp_message_attributes_len (msg); i++) {
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const GstSDPAttribute *attr = gst_sdp_message_get_attribute (msg, i);
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if (attr->key) {
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g_string_append_printf (lines, "a=%s", attr->key);
|
|
if (attr->value)
|
|
g_string_append_printf (lines, ":%s", attr->value);
|
|
g_string_append_printf (lines, "\r\n");
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < gst_sdp_message_medias_len (msg); i++) {
|
|
const GstSDPMedia *media = gst_sdp_message_get_media (msg, i);
|
|
gchar *sdp_media_str;
|
|
|
|
sdp_media_str = gst_sdp_media_as_text (media);
|
|
g_string_append_printf (lines, "%s", sdp_media_str);
|
|
g_free (sdp_media_str);
|
|
}
|
|
|
|
return g_string_free (lines, FALSE);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_set_version:
|
|
* @msg: a #GstSDPMessage
|
|
* @version: the version
|
|
*
|
|
* Set the version in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_SETTER (version);
|
|
/**
|
|
* gst_sdp_message_get_version:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the version in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_GETTER (version);
|
|
|
|
/**
|
|
* gst_sdp_message_set_origin:
|
|
* @msg: a #GstSDPMessage
|
|
* @username: the user name
|
|
* @sess_id: a session id
|
|
* @sess_version: a session version
|
|
* @nettype: a network type
|
|
* @addrtype: an address type
|
|
* @addr: an address
|
|
*
|
|
* Configure the SDP origin in @msg with the given parameters.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_set_origin (GstSDPMessage * msg, const gchar * username,
|
|
const gchar * sess_id, const gchar * sess_version, const gchar * nettype,
|
|
const gchar * addrtype, const gchar * addr)
|
|
{
|
|
REPLACE_STRING (msg->origin.username, username);
|
|
REPLACE_STRING (msg->origin.sess_id, sess_id);
|
|
REPLACE_STRING (msg->origin.sess_version, sess_version);
|
|
REPLACE_STRING (msg->origin.nettype, nettype);
|
|
REPLACE_STRING (msg->origin.addrtype, addrtype);
|
|
REPLACE_STRING (msg->origin.addr, addr);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_get_origin:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the origin of @msg.
|
|
*
|
|
* Returns: a #GstSDPOrigin. The result remains valid as long as @msg is valid.
|
|
*/
|
|
const GstSDPOrigin *
|
|
gst_sdp_message_get_origin (const GstSDPMessage * msg)
|
|
{
|
|
return &msg->origin;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_set_session_name:
|
|
* @msg: a #GstSDPMessage
|
|
* @session_name: the session name
|
|
*
|
|
* Set the session name in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_SETTER (session_name);
|
|
/**
|
|
* gst_sdp_message_get_session_name:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the session name in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_GETTER (session_name);
|
|
/**
|
|
* gst_sdp_message_set_information:
|
|
* @msg: a #GstSDPMessage
|
|
* @information: the information
|
|
*
|
|
* Set the information in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_SETTER (information);
|
|
/**
|
|
* gst_sdp_message_get_information:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the information in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_GETTER (information);
|
|
/**
|
|
* gst_sdp_message_set_uri:
|
|
* @msg: a #GstSDPMessage
|
|
* @uri: the URI
|
|
*
|
|
* Set the URI in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_SETTER (uri);
|
|
/**
|
|
* gst_sdp_message_get_uri:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the URI in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_STRING_GETTER (uri);
|
|
|
|
/**
|
|
* gst_sdp_message_emails_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of emails in @msg.
|
|
*
|
|
* Returns: the number of emails in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (emails);
|
|
/**
|
|
* gst_sdp_message_get_email:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: an email index
|
|
*
|
|
* Get the email with number @idx from @msg.
|
|
*
|
|
* Returns: the email at position @idx.
|
|
*/
|
|
DEFINE_PTR_ARRAY_GETTER (email, emails, const gchar *);
|
|
|
|
/**
|
|
* gst_sdp_message_add_email:
|
|
* @msg: a #GstSDPMessage
|
|
* @email: an email
|
|
*
|
|
* Add @email to the list of emails in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_PTR_ARRAY_ADDER (email, emails, const gchar *, g_strdup);
|
|
|
|
/**
|
|
* gst_sdp_message_phones_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of phones in @msg.
|
|
*
|
|
* Returns: the number of phones in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (phones);
|
|
/**
|
|
* gst_sdp_message_get_phone:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: a phone index
|
|
*
|
|
* Get the phone with number @idx from @msg.
|
|
*
|
|
* Returns: the phone at position @idx.
|
|
*/
|
|
DEFINE_PTR_ARRAY_GETTER (phone, phones, const gchar *);
|
|
|
|
/**
|
|
* gst_sdp_message_add_phone:
|
|
* @msg: a #GstSDPMessage
|
|
* @phone: a phone
|
|
*
|
|
* Add @phone to the list of phones in @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
DEFINE_PTR_ARRAY_ADDER (phone, phones, const gchar *, g_strdup);
|
|
|
|
/**
|
|
* gst_sdp_message_set_connection:
|
|
* @msg: a #GstSDPMessage
|
|
* @nettype: the type of network. "IN" is defined to have the meaning
|
|
* "Internet".
|
|
* @addrtype: the type of address.
|
|
* @address: the address
|
|
* @ttl: the time to live of the address
|
|
* @addr_number: the number of layers
|
|
*
|
|
* Configure the SDP connection in @msg with the given parameters.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_set_connection (GstSDPMessage * msg, const gchar * nettype,
|
|
const gchar * addrtype, const gchar * address, guint ttl, guint addr_number)
|
|
{
|
|
REPLACE_STRING (msg->connection.nettype, nettype);
|
|
REPLACE_STRING (msg->connection.addrtype, addrtype);
|
|
REPLACE_STRING (msg->connection.address, address);
|
|
msg->connection.ttl = ttl;
|
|
msg->connection.addr_number = addr_number;
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_get_connection:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the connection of @msg.
|
|
*
|
|
* Returns: a #GstSDPConnection. The result remains valid as long as @msg is valid.
|
|
*/
|
|
const GstSDPConnection *
|
|
gst_sdp_message_get_connection (const GstSDPMessage * msg)
|
|
{
|
|
return &msg->connection;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_bandwidths_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of bandwidth information in @msg.
|
|
*
|
|
* Returns: the number of bandwidth information in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (bandwidths);
|
|
/**
|
|
* gst_sdp_message_get_bandwidth:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: the bandwidth index
|
|
*
|
|
* Get the bandwidth at index @idx from @msg.
|
|
*
|
|
* Returns: a #GstSDPBandwidth.
|
|
*/
|
|
DEFINE_ARRAY_GETTER (bandwidth, bandwidths, const GstSDPBandwidth);
|
|
|
|
/**
|
|
* gst_sdp_message_add_bandwidth:
|
|
* @msg: a #GstSDPMessage
|
|
* @bwtype: the bandwidth modifier type
|
|
* @bandwidth: the bandwidth in kilobits per second
|
|
*
|
|
* Add the specified bandwidth information to @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
|
|
GstSDPResult
|
|
gst_sdp_message_add_bandwidth (GstSDPMessage * msg, const gchar * bwtype,
|
|
guint bandwidth)
|
|
{
|
|
GstSDPBandwidth bw;
|
|
|
|
bw.bwtype = g_strdup (bwtype);
|
|
bw.bandwidth = bandwidth;
|
|
|
|
g_array_append_val (msg->bandwidths, bw);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_times_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of time information entries in @msg.
|
|
*
|
|
* Returns: the number of time information entries in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (times);
|
|
|
|
/**
|
|
* gst_sdp_message_get_time:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: the time index
|
|
*
|
|
* Get time information with index @idx from @msg.
|
|
*
|
|
* Returns: a #GstSDPTime.
|
|
*/
|
|
DEFINE_ARRAY_GETTER (time, times, const GstSDPTime);
|
|
|
|
/**
|
|
* gst_sdp_message_add_time:
|
|
* @msg: a #GstSDPMessage
|
|
* @start: the start time
|
|
* @stop: the stop time
|
|
* @repeat: the repeat times
|
|
*
|
|
* Add time information @start and @stop to @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_add_time (GstSDPMessage * msg, const gchar * start,
|
|
const gchar * stop, const gchar ** repeat)
|
|
{
|
|
GstSDPTime times;
|
|
|
|
times.start = g_strdup (start);
|
|
times.stop = g_strdup (stop);
|
|
if (repeat) {
|
|
times.repeat = g_array_new (FALSE, TRUE, sizeof (gchar *));
|
|
for (; *repeat; repeat++) {
|
|
gchar *r = g_strdup (*repeat);
|
|
|
|
g_array_append_val (times.repeat, r);
|
|
}
|
|
} else
|
|
times.repeat = NULL;
|
|
g_array_append_val (msg->times, times);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_zones_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of time zone information entries in @msg.
|
|
*
|
|
* Returns: the number of time zone information entries in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (zones);
|
|
/**
|
|
* gst_sdp_message_get_zone:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: the zone index
|
|
*
|
|
* Get time zone information with index @idx from @msg.
|
|
*
|
|
* Returns: a #GstSDPZone.
|
|
*/
|
|
DEFINE_ARRAY_GETTER (zone, zones, const GstSDPZone);
|
|
|
|
/**
|
|
* gst_sdp_message_add_zone:
|
|
* @msg: a #GstSDPMessage
|
|
* @adj_time: the NTP time that a time zone adjustment happens
|
|
* @typed_time: the offset from the time when the session was first scheduled
|
|
*
|
|
* Add time zone information to @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_add_zone (GstSDPMessage * msg, const gchar * adj_time,
|
|
const gchar * typed_time)
|
|
{
|
|
GstSDPZone zone;
|
|
|
|
zone.time = g_strdup (adj_time);
|
|
zone.typed_time = g_strdup (typed_time);
|
|
|
|
g_array_append_val (msg->zones, zone);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_set_key:
|
|
* @msg: a #GstSDPMessage
|
|
* @type: the encryption type
|
|
* @data: the encryption data
|
|
*
|
|
* Adds the encryption information to @msg.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_set_key (GstSDPMessage * msg, const gchar * type,
|
|
const gchar * data)
|
|
{
|
|
REPLACE_STRING (msg->key.type, type);
|
|
REPLACE_STRING (msg->key.data, data);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_get_key:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the encryption information from @msg.
|
|
*
|
|
* Returns: a #GstSDPKey.
|
|
*/
|
|
const GstSDPKey *
|
|
gst_sdp_message_get_key (const GstSDPMessage * msg)
|
|
{
|
|
return &msg->key;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_attributes_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of attributes in @msg.
|
|
*
|
|
* Returns: the number of attributes in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (attributes);
|
|
|
|
/**
|
|
* gst_sdp_message_get_attribute:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: the index
|
|
*
|
|
* Get the attribute at position @idx in @msg.
|
|
*
|
|
* Returns: the #GstSDPAttribute at position @idx.
|
|
*/
|
|
DEFINE_ARRAY_GETTER (attribute, attributes, const GstSDPAttribute);
|
|
|
|
/**
|
|
* gst_sdp_message_get_attribute_val_n:
|
|
* @msg: a #GstSDPMessage
|
|
* @key: the key
|
|
* @nth: the index
|
|
*
|
|
* Get the @nth attribute with key @key in @msg.
|
|
*
|
|
* Returns: the attribute value of the @nth attribute with @key.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_message_get_attribute_val_n (const GstSDPMessage * msg,
|
|
const gchar * key, guint nth)
|
|
{
|
|
guint i;
|
|
|
|
for (i = 0; i < msg->attributes->len; i++) {
|
|
GstSDPAttribute *attr;
|
|
|
|
attr = &g_array_index (msg->attributes, GstSDPAttribute, i);
|
|
if (!strcmp (attr->key, key)) {
|
|
if (nth == 0)
|
|
return attr->value;
|
|
else
|
|
nth--;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_get_attribute_val:
|
|
* @msg: a #GstSDPMessage
|
|
* @key: the key
|
|
*
|
|
* Get the first attribute with key @key in @msg.
|
|
*
|
|
* Returns: the attribute value of the first attribute with @key.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_message_get_attribute_val (const GstSDPMessage * msg, const gchar * key)
|
|
{
|
|
return gst_sdp_message_get_attribute_val_n (msg, key, 0);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_add_attribute:
|
|
* @msg: a #GstSDPMessage
|
|
* @key: the key
|
|
* @value: the value
|
|
*
|
|
* Add the attribute with @key and @value to @msg.
|
|
*
|
|
* Returns: @GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_add_attribute (GstSDPMessage * msg, const gchar * key,
|
|
const gchar * value)
|
|
{
|
|
GstSDPAttribute attr;
|
|
|
|
attr.key = g_strdup (key);
|
|
attr.value = g_strdup (value);
|
|
|
|
g_array_append_val (msg->attributes, attr);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_medias_len:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Get the number of media descriptions in @msg.
|
|
*
|
|
* Returns: the number of media descriptions in @msg.
|
|
*/
|
|
DEFINE_ARRAY_LEN (medias);
|
|
/**
|
|
* gst_sdp_message_get_media:
|
|
* @msg: a #GstSDPMessage
|
|
* @idx: the index
|
|
*
|
|
* Get the media description at index @idx in @msg.
|
|
*
|
|
* Returns: a #GstSDPMedia.
|
|
*/
|
|
DEFINE_ARRAY_GETTER (media, medias, const GstSDPMedia);
|
|
|
|
/**
|
|
* gst_sdp_message_add_media:
|
|
* @msg: a #GstSDPMessage
|
|
* @media: a #GstSDPMedia to add
|
|
*
|
|
* Adds @media to the array of medias in @msg. This function takes ownership of
|
|
* the contents of @media so that @media will have to be reinitialized with
|
|
* gst_media_init() before it can be used again.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_add_media (GstSDPMessage * msg, GstSDPMedia * media)
|
|
{
|
|
guint len;
|
|
GstSDPMedia *nmedia;
|
|
|
|
len = msg->medias->len;
|
|
g_array_set_size (msg->medias, len + 1);
|
|
nmedia = &g_array_index (msg->medias, GstSDPMedia, len);
|
|
|
|
memcpy (nmedia, media, sizeof (GstSDPMedia));
|
|
memset (media, 0, sizeof (GstSDPMedia));
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/* media access */
|
|
|
|
/**
|
|
* gst_sdp_media_new:
|
|
* @media: pointer to new #GstSDPMedia
|
|
*
|
|
* Allocate a new GstSDPMedia and store the result in @media.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_new (GstSDPMedia ** media)
|
|
{
|
|
GstSDPMedia *newmedia;
|
|
|
|
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
|
|
|
|
newmedia = g_new0 (GstSDPMedia, 1);
|
|
|
|
*media = newmedia;
|
|
|
|
return gst_sdp_media_init (newmedia);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_init:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Initialize @media so that its contents are as if it was freshly allocated
|
|
* with gst_sdp_media_new(). This function is mostly used to initialize a media
|
|
* allocated on the stack. gst_sdp_media_uninit() undoes this operation.
|
|
*
|
|
* When this function is invoked on newly allocated data (with malloc or on the
|
|
* stack), its contents should be set to 0 before calling this function.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_init (GstSDPMedia * media)
|
|
{
|
|
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
|
|
|
|
FREE_STRING (media->media);
|
|
media->port = 0;
|
|
media->num_ports = 0;
|
|
FREE_STRING (media->proto);
|
|
INIT_PTR_ARRAY (media->fmts, gchar *, g_free);
|
|
FREE_STRING (media->information);
|
|
INIT_ARRAY (media->connections, GstSDPConnection, gst_sdp_connection_init);
|
|
INIT_ARRAY (media->bandwidths, GstSDPBandwidth, gst_sdp_bandwidth_init);
|
|
gst_sdp_key_init (&media->key);
|
|
INIT_ARRAY (media->attributes, GstSDPAttribute, gst_sdp_attribute_init);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_uninit:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Free all resources allocated in @media. @media should not be used anymore after
|
|
* this function. This function should be used when @media was allocated on the
|
|
* stack and initialized with gst_sdp_media_init().
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_uninit (GstSDPMedia * media)
|
|
{
|
|
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
|
|
|
|
gst_sdp_media_init (media);
|
|
FREE_PTR_ARRAY (media->fmts);
|
|
FREE_ARRAY (media->connections);
|
|
FREE_ARRAY (media->bandwidths);
|
|
FREE_ARRAY (media->attributes);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_free:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Free all resources allocated by @media. @media should not be used anymore after
|
|
* this function. This function should be used when @media was dynamically
|
|
* allocated with gst_sdp_media_new().
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_free (GstSDPMedia * media)
|
|
{
|
|
g_return_val_if_fail (media != NULL, GST_SDP_EINVAL);
|
|
|
|
gst_sdp_media_uninit (media);
|
|
g_free (media);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_as_text:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Convert the contents of @media to a text string.
|
|
*
|
|
* Returns: A dynamically allocated string representing the media.
|
|
*/
|
|
gchar *
|
|
gst_sdp_media_as_text (const GstSDPMedia * media)
|
|
{
|
|
GString *lines;
|
|
guint i;
|
|
|
|
g_return_val_if_fail (media != NULL, NULL);
|
|
|
|
lines = g_string_new ("");
|
|
|
|
if (media->media)
|
|
g_string_append_printf (lines, "m=%s", media->media);
|
|
|
|
g_string_append_printf (lines, " %u", media->port);
|
|
|
|
if (media->num_ports > 1)
|
|
g_string_append_printf (lines, "/%u", media->num_ports);
|
|
|
|
g_string_append_printf (lines, " %s", media->proto);
|
|
|
|
for (i = 0; i < gst_sdp_media_formats_len (media); i++)
|
|
g_string_append_printf (lines, " %s", gst_sdp_media_get_format (media, i));
|
|
g_string_append_printf (lines, "\r\n");
|
|
|
|
if (media->information)
|
|
g_string_append_printf (lines, "i=%s", media->information);
|
|
|
|
for (i = 0; i < gst_sdp_media_connections_len (media); i++) {
|
|
const GstSDPConnection *conn = gst_sdp_media_get_connection (media, i);
|
|
|
|
if (conn->nettype && conn->addrtype && conn->address) {
|
|
guint family;
|
|
|
|
g_string_append_printf (lines, "c=%s %s %s", conn->nettype,
|
|
conn->addrtype, conn->address);
|
|
if (is_multicast_address (conn->address, &family)) {
|
|
if (family == AF_INET)
|
|
g_string_append_printf (lines, "/%u", conn->ttl);
|
|
if (conn->addr_number > 1)
|
|
g_string_append_printf (lines, "/%u", conn->addr_number);
|
|
}
|
|
g_string_append_printf (lines, "\r\n");
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < gst_sdp_media_bandwidths_len (media); i++) {
|
|
const GstSDPBandwidth *bandwidth = gst_sdp_media_get_bandwidth (media, i);
|
|
|
|
g_string_append_printf (lines, "b=%s:%u\r\n", bandwidth->bwtype,
|
|
bandwidth->bandwidth);
|
|
}
|
|
|
|
if (media->key.type) {
|
|
g_string_append_printf (lines, "k=%s", media->key.type);
|
|
if (media->key.data)
|
|
g_string_append_printf (lines, ":%s", media->key.data);
|
|
g_string_append_printf (lines, "\r\n");
|
|
}
|
|
|
|
for (i = 0; i < gst_sdp_media_attributes_len (media); i++) {
|
|
const GstSDPAttribute *attr = gst_sdp_media_get_attribute (media, i);
|
|
|
|
if (attr->key) {
|
|
g_string_append_printf (lines, "a=%s", attr->key);
|
|
if (attr->value)
|
|
g_string_append_printf (lines, ":%s", attr->value);
|
|
g_string_append_printf (lines, "\r\n");
|
|
}
|
|
}
|
|
|
|
return g_string_free (lines, FALSE);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_media:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the media description of @media.
|
|
*
|
|
* Returns: the media description.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_media (const GstSDPMedia * media)
|
|
{
|
|
return media->media;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_set_media:
|
|
* @media: a #GstSDPMedia
|
|
* @med: the media description
|
|
*
|
|
* Set the media description of @media to @med.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_set_media (GstSDPMedia * media, const gchar * med)
|
|
{
|
|
g_free (media->media);
|
|
media->media = g_strdup (med);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_port:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the port number for @media.
|
|
*
|
|
* Returns: the port number of @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_get_port (const GstSDPMedia * media)
|
|
{
|
|
return media->port;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_num_ports:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the number of ports for @media.
|
|
*
|
|
* Returns: the number of ports for @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_get_num_ports (const GstSDPMedia * media)
|
|
{
|
|
return media->num_ports;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_set_port_info:
|
|
* @media: a #GstSDPMedia
|
|
* @port: the port number
|
|
* @num_ports: the number of ports
|
|
*
|
|
* Set the port information in @media.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_set_port_info (GstSDPMedia * media, guint port, guint num_ports)
|
|
{
|
|
media->port = port;
|
|
media->num_ports = num_ports;
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_proto:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the transport protocol of @media
|
|
*
|
|
* Returns: the transport protocol of @media.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_proto (const GstSDPMedia * media)
|
|
{
|
|
return media->proto;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_set_proto:
|
|
* @media: a #GstSDPMedia
|
|
* @proto: the media transport protocol
|
|
*
|
|
* Set the media transport protocol of @media to @proto.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_set_proto (GstSDPMedia * media, const gchar * proto)
|
|
{
|
|
g_free (media->proto);
|
|
media->proto = g_strdup (proto);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_formats_len:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the number of formats in @media.
|
|
*
|
|
* Returns: the number of formats in @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_formats_len (const GstSDPMedia * media)
|
|
{
|
|
return media->fmts->len;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_format:
|
|
* @media: a #GstSDPMedia
|
|
* @idx: an index
|
|
*
|
|
* Get the format information at position @idx in @media.
|
|
*
|
|
* Returns: the format at position @idx.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_format (const GstSDPMedia * media, guint idx)
|
|
{
|
|
if (idx >= media->fmts->len)
|
|
return NULL;
|
|
return g_array_index (media->fmts, gchar *, idx);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_add_format:
|
|
* @media: a #GstSDPMedia
|
|
* @format: the format
|
|
*
|
|
* Add the format information to @media.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_add_format (GstSDPMedia * media, const gchar * format)
|
|
{
|
|
gchar *fmt;
|
|
|
|
fmt = g_strdup (format);
|
|
|
|
g_array_append_val (media->fmts, fmt);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_information:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the information of @media
|
|
*
|
|
* Returns: the information of @media.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_information (const GstSDPMedia * media)
|
|
{
|
|
return media->information;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_set_information:
|
|
* @media: a #GstSDPMedia
|
|
* @information: the media information
|
|
*
|
|
* Set the media information of @media to @information.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_set_information (GstSDPMedia * media, const gchar * information)
|
|
{
|
|
g_free (media->information);
|
|
media->information = g_strdup (information);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_connections_len:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the number of connection fields in @media.
|
|
*
|
|
* Returns: the number of connections in @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_connections_len (const GstSDPMedia * media)
|
|
{
|
|
return media->connections->len;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_connection:
|
|
* @media: a #GstSDPMedia
|
|
* @idx: an index
|
|
*
|
|
* Get the connection at position @idx in @media.
|
|
*
|
|
* Returns: the #GstSDPConnection at position @idx.
|
|
*/
|
|
const GstSDPConnection *
|
|
gst_sdp_media_get_connection (const GstSDPMedia * media, guint idx)
|
|
{
|
|
return &g_array_index (media->connections, GstSDPConnection, idx);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_add_connection:
|
|
* @media: a #GstSDPMedia
|
|
* @nettype: the type of network. "IN" is defined to have the meaning
|
|
* "Internet".
|
|
* @addrtype: the type of address.
|
|
* @address: the address
|
|
* @ttl: the time to live of the address
|
|
* @addr_number: the number of layers
|
|
*
|
|
* Add the given connection parameters to @media.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_add_connection (GstSDPMedia * media, const gchar * nettype,
|
|
const gchar * addrtype, const gchar * address, guint ttl, guint addr_number)
|
|
{
|
|
GstSDPConnection conn;
|
|
|
|
conn.nettype = g_strdup (nettype);
|
|
conn.addrtype = g_strdup (addrtype);
|
|
conn.address = g_strdup (address);
|
|
conn.ttl = ttl;
|
|
conn.addr_number = addr_number;
|
|
|
|
g_array_append_val (media->connections, conn);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_bandwidths_len:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the number of bandwidth fields in @media.
|
|
*
|
|
* Returns: the number of bandwidths in @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_bandwidths_len (const GstSDPMedia * media)
|
|
{
|
|
return media->bandwidths->len;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_bandwidth:
|
|
* @media: a #GstSDPMedia
|
|
* @idx: an index
|
|
*
|
|
* Get the bandwidth at position @idx in @media.
|
|
*
|
|
* Returns: the #GstSDPBandwidth at position @idx.
|
|
*/
|
|
const GstSDPBandwidth *
|
|
gst_sdp_media_get_bandwidth (const GstSDPMedia * media, guint idx)
|
|
{
|
|
return &g_array_index (media->bandwidths, GstSDPBandwidth, idx);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_add_bandwidth:
|
|
* @media: a #GstSDPMedia
|
|
* @bwtype: the bandwidth modifier type
|
|
* @bandwidth: the bandwidth in kilobits per second
|
|
*
|
|
* Add the bandwidth information with @bwtype and @bandwidth to @media.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_add_bandwidth (GstSDPMedia * media, const gchar * bwtype,
|
|
guint bandwidth)
|
|
{
|
|
GstSDPBandwidth bw;
|
|
|
|
bw.bwtype = g_strdup (bwtype);
|
|
bw.bandwidth = bandwidth;
|
|
|
|
g_array_append_val (media->bandwidths, bw);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_set_key:
|
|
* @media: a #GstSDPMedia
|
|
* @type: the encryption type
|
|
* @data: the encryption data
|
|
*
|
|
* Adds the encryption information to @media.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_set_key (GstSDPMedia * media, const gchar * type,
|
|
const gchar * data)
|
|
{
|
|
g_free (media->key.type);
|
|
media->key.type = g_strdup (type);
|
|
g_free (media->key.data);
|
|
media->key.data = g_strdup (data);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_key:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the encryption information from @media.
|
|
*
|
|
* Returns: a #GstSDPKey.
|
|
*/
|
|
const GstSDPKey *
|
|
gst_sdp_media_get_key (const GstSDPMedia * media)
|
|
{
|
|
return &media->key;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_attributes_len:
|
|
* @media: a #GstSDPMedia
|
|
*
|
|
* Get the number of attribute fields in @media.
|
|
*
|
|
* Returns: the number of attributes in @media.
|
|
*/
|
|
guint
|
|
gst_sdp_media_attributes_len (const GstSDPMedia * media)
|
|
{
|
|
return media->attributes->len;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_add_attribute:
|
|
* @media: a #GstSDPMedia
|
|
* @key: a key
|
|
* @value: a value
|
|
*
|
|
* Add the attribute with @key and @value to @media.
|
|
*
|
|
* Returns: #GST_SDP_OK.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_media_add_attribute (GstSDPMedia * media, const gchar * key,
|
|
const gchar * value)
|
|
{
|
|
GstSDPAttribute attr;
|
|
|
|
attr.key = g_strdup (key);
|
|
attr.value = g_strdup (value);
|
|
|
|
g_array_append_val (media->attributes, attr);
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_attribute:
|
|
* @media: a #GstSDPMedia
|
|
* @idx: an index
|
|
*
|
|
* Get the attribute at position @idx in @media.
|
|
*
|
|
* Returns: the #GstSDPAttribute at position @idx.
|
|
*/
|
|
const GstSDPAttribute *
|
|
gst_sdp_media_get_attribute (const GstSDPMedia * media, guint idx)
|
|
{
|
|
return &g_array_index (media->attributes, GstSDPAttribute, idx);
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_attribute_val_n:
|
|
* @media: a #GstSDPMedia
|
|
* @key: a key
|
|
* @nth: an index
|
|
*
|
|
* Get the @nth attribute value for @key in @media.
|
|
*
|
|
* Returns: the @nth attribute value.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_attribute_val_n (const GstSDPMedia * media, const gchar * key,
|
|
guint nth)
|
|
{
|
|
guint i;
|
|
|
|
for (i = 0; i < media->attributes->len; i++) {
|
|
GstSDPAttribute *attr;
|
|
|
|
attr = &g_array_index (media->attributes, GstSDPAttribute, i);
|
|
if (!strcmp (attr->key, key)) {
|
|
if (nth == 0)
|
|
return attr->value;
|
|
else
|
|
nth--;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_media_get_attribute_val:
|
|
* @media: a #GstSDPMedia
|
|
* @key: a key
|
|
*
|
|
* Get the first attribute value for @key in @media.
|
|
*
|
|
* Returns: the first attribute value for @key.
|
|
*/
|
|
const gchar *
|
|
gst_sdp_media_get_attribute_val (const GstSDPMedia * media, const gchar * key)
|
|
{
|
|
return gst_sdp_media_get_attribute_val_n (media, key, 0);
|
|
}
|
|
|
|
static void
|
|
read_string (gchar * dest, guint size, gchar ** src)
|
|
{
|
|
guint idx;
|
|
|
|
idx = 0;
|
|
/* skip spaces */
|
|
while (g_ascii_isspace (**src))
|
|
(*src)++;
|
|
|
|
while (!g_ascii_isspace (**src) && **src != '\0') {
|
|
if (idx < size - 1)
|
|
dest[idx++] = **src;
|
|
(*src)++;
|
|
}
|
|
if (size > 0)
|
|
dest[idx] = '\0';
|
|
}
|
|
|
|
static void
|
|
read_string_del (gchar * dest, guint size, gchar del, gchar ** src)
|
|
{
|
|
guint idx;
|
|
|
|
idx = 0;
|
|
/* skip spaces */
|
|
while (g_ascii_isspace (**src))
|
|
(*src)++;
|
|
|
|
while (**src != del && **src != '\0') {
|
|
if (idx < size - 1)
|
|
dest[idx++] = **src;
|
|
(*src)++;
|
|
}
|
|
if (size > 0)
|
|
dest[idx] = '\0';
|
|
}
|
|
|
|
enum
|
|
{
|
|
SDP_SESSION,
|
|
SDP_MEDIA,
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
guint state;
|
|
GstSDPMessage *msg;
|
|
GstSDPMedia *media;
|
|
} SDPContext;
|
|
|
|
static gboolean
|
|
gst_sdp_parse_line (SDPContext * c, gchar type, gchar * buffer)
|
|
{
|
|
gchar str[8192];
|
|
gchar *p = buffer;
|
|
|
|
#define READ_STRING(field) read_string (str, sizeof (str), &p); REPLACE_STRING (field, str)
|
|
#define READ_UINT(field) read_string (str, sizeof (str), &p); field = strtoul (str, NULL, 10)
|
|
|
|
switch (type) {
|
|
case 'v':
|
|
if (buffer[0] != '0')
|
|
g_warning ("wrong SDP version");
|
|
gst_sdp_message_set_version (c->msg, buffer);
|
|
break;
|
|
case 'o':
|
|
READ_STRING (c->msg->origin.username);
|
|
READ_STRING (c->msg->origin.sess_id);
|
|
READ_STRING (c->msg->origin.sess_version);
|
|
READ_STRING (c->msg->origin.nettype);
|
|
READ_STRING (c->msg->origin.addrtype);
|
|
READ_STRING (c->msg->origin.addr);
|
|
break;
|
|
case 's':
|
|
REPLACE_STRING (c->msg->session_name, buffer);
|
|
break;
|
|
case 'i':
|
|
if (c->state == SDP_SESSION) {
|
|
REPLACE_STRING (c->msg->information, buffer);
|
|
} else {
|
|
REPLACE_STRING (c->media->information, buffer);
|
|
}
|
|
break;
|
|
case 'u':
|
|
REPLACE_STRING (c->msg->uri, buffer);
|
|
break;
|
|
case 'e':
|
|
gst_sdp_message_add_email (c->msg, buffer);
|
|
break;
|
|
case 'p':
|
|
gst_sdp_message_add_phone (c->msg, buffer);
|
|
break;
|
|
case 'c':
|
|
{
|
|
GstSDPConnection conn;
|
|
gchar *str2;
|
|
|
|
memset (&conn, 0, sizeof (conn));
|
|
|
|
str2 = p;
|
|
while ((str2 = strchr (str2, '/')))
|
|
*str2++ = ' ';
|
|
READ_STRING (conn.nettype);
|
|
READ_STRING (conn.addrtype);
|
|
READ_STRING (conn.address);
|
|
READ_UINT (conn.ttl);
|
|
READ_UINT (conn.addr_number);
|
|
|
|
if (c->state == SDP_SESSION) {
|
|
gst_sdp_message_set_connection (c->msg, conn.nettype, conn.addrtype,
|
|
conn.address, conn.ttl, conn.addr_number);
|
|
} else {
|
|
gst_sdp_media_add_connection (c->media, conn.nettype, conn.addrtype,
|
|
conn.address, conn.ttl, conn.addr_number);
|
|
}
|
|
gst_sdp_connection_init (&conn);
|
|
break;
|
|
}
|
|
case 'b':
|
|
{
|
|
gchar str2[MAX_LINE_LEN];
|
|
|
|
read_string_del (str, sizeof (str), ':', &p);
|
|
if (*p != '\0')
|
|
p++;
|
|
read_string (str2, sizeof (str2), &p);
|
|
if (c->state == SDP_SESSION)
|
|
gst_sdp_message_add_bandwidth (c->msg, str, atoi (str2));
|
|
else
|
|
gst_sdp_media_add_bandwidth (c->media, str, atoi (str2));
|
|
break;
|
|
}
|
|
case 't':
|
|
break;
|
|
case 'k':
|
|
break;
|
|
case 'a':
|
|
read_string_del (str, sizeof (str), ':', &p);
|
|
if (*p != '\0')
|
|
p++;
|
|
if (c->state == SDP_SESSION)
|
|
gst_sdp_message_add_attribute (c->msg, str, p);
|
|
else
|
|
gst_sdp_media_add_attribute (c->media, str, p);
|
|
break;
|
|
case 'm':
|
|
{
|
|
gchar *slash;
|
|
GstSDPMedia nmedia;
|
|
|
|
c->state = SDP_MEDIA;
|
|
memset (&nmedia, 0, sizeof (nmedia));
|
|
gst_sdp_media_init (&nmedia);
|
|
|
|
/* m=<media> <port>/<number of ports> <proto> <fmt> ... */
|
|
READ_STRING (nmedia.media);
|
|
read_string (str, sizeof (str), &p);
|
|
slash = g_strrstr (str, "/");
|
|
if (slash) {
|
|
*slash = '\0';
|
|
nmedia.port = atoi (str);
|
|
nmedia.num_ports = atoi (slash + 1);
|
|
} else {
|
|
nmedia.port = atoi (str);
|
|
nmedia.num_ports = -1;
|
|
}
|
|
READ_STRING (nmedia.proto);
|
|
do {
|
|
read_string (str, sizeof (str), &p);
|
|
gst_sdp_media_add_format (&nmedia, str);
|
|
} while (*p != '\0');
|
|
|
|
gst_sdp_message_add_media (c->msg, &nmedia);
|
|
c->media =
|
|
&g_array_index (c->msg->medias, GstSDPMedia, c->msg->medias->len - 1);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_parse_buffer:
|
|
* @data: the start of the buffer
|
|
* @size: the size of the buffer
|
|
* @msg: the result #GstSDPMessage
|
|
*
|
|
* Parse the contents of @size bytes pointed to by @data and store the result in
|
|
* @msg.
|
|
*
|
|
* Returns: #GST_SDP_OK on success.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_parse_buffer (const guint8 * data, guint size,
|
|
GstSDPMessage * msg)
|
|
{
|
|
gchar *p;
|
|
SDPContext c;
|
|
gchar type;
|
|
gchar buffer[MAX_LINE_LEN];
|
|
guint idx = 0;
|
|
|
|
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
|
|
g_return_val_if_fail (data != NULL, GST_SDP_EINVAL);
|
|
g_return_val_if_fail (size != 0, GST_SDP_EINVAL);
|
|
|
|
c.state = SDP_SESSION;
|
|
c.msg = msg;
|
|
c.media = NULL;
|
|
|
|
p = (gchar *) data;
|
|
while (TRUE) {
|
|
while (g_ascii_isspace (*p))
|
|
p++;
|
|
|
|
type = *p++;
|
|
if (type == '\0')
|
|
break;
|
|
|
|
if (*p != '=')
|
|
goto line_done;
|
|
p++;
|
|
|
|
idx = 0;
|
|
while (*p != '\n' && *p != '\r' && *p != '\0') {
|
|
if (idx < sizeof (buffer) - 1)
|
|
buffer[idx++] = *p;
|
|
p++;
|
|
}
|
|
buffer[idx] = '\0';
|
|
gst_sdp_parse_line (&c, type, buffer);
|
|
|
|
line_done:
|
|
while (*p != '\n' && *p != '\0')
|
|
p++;
|
|
if (*p == '\n')
|
|
p++;
|
|
}
|
|
|
|
return GST_SDP_OK;
|
|
}
|
|
|
|
static void
|
|
print_media (GstSDPMedia * media)
|
|
{
|
|
g_print (" media: '%s'\n", GST_STR_NULL (media->media));
|
|
g_print (" port: '%u'\n", media->port);
|
|
g_print (" num_ports: '%u'\n", media->num_ports);
|
|
g_print (" proto: '%s'\n", GST_STR_NULL (media->proto));
|
|
if (media->fmts->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" formats:\n");
|
|
for (i = 0; i < media->fmts->len; i++) {
|
|
g_print (" format '%s'\n", g_array_index (media->fmts, gchar *, i));
|
|
}
|
|
}
|
|
g_print (" information: '%s'\n", GST_STR_NULL (media->information));
|
|
if (media->connections->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" connections:\n");
|
|
for (i = 0; i < media->connections->len; i++) {
|
|
GstSDPConnection *conn =
|
|
&g_array_index (media->connections, GstSDPConnection, i);
|
|
|
|
g_print (" nettype: '%s'\n", GST_STR_NULL (conn->nettype));
|
|
g_print (" addrtype: '%s'\n", GST_STR_NULL (conn->addrtype));
|
|
g_print (" address: '%s'\n", GST_STR_NULL (conn->address));
|
|
g_print (" ttl: '%u'\n", conn->ttl);
|
|
g_print (" addr_number: '%u'\n", conn->addr_number);
|
|
}
|
|
}
|
|
if (media->bandwidths->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" bandwidths:\n");
|
|
for (i = 0; i < media->bandwidths->len; i++) {
|
|
GstSDPBandwidth *bw =
|
|
&g_array_index (media->bandwidths, GstSDPBandwidth, i);
|
|
|
|
g_print (" type: '%s'\n", GST_STR_NULL (bw->bwtype));
|
|
g_print (" bandwidth: '%u'\n", bw->bandwidth);
|
|
}
|
|
}
|
|
g_print (" key:\n");
|
|
g_print (" type: '%s'\n", GST_STR_NULL (media->key.type));
|
|
g_print (" data: '%s'\n", GST_STR_NULL (media->key.data));
|
|
if (media->attributes->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" attributes:\n");
|
|
for (i = 0; i < media->attributes->len; i++) {
|
|
GstSDPAttribute *attr =
|
|
&g_array_index (media->attributes, GstSDPAttribute, i);
|
|
|
|
g_print (" attribute '%s' : '%s'\n", attr->key, attr->value);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_sdp_message_dump:
|
|
* @msg: a #GstSDPMessage
|
|
*
|
|
* Dump the parsed contents of @msg to stdout.
|
|
*
|
|
* Returns: a #GstSDPResult.
|
|
*/
|
|
GstSDPResult
|
|
gst_sdp_message_dump (const GstSDPMessage * msg)
|
|
{
|
|
g_return_val_if_fail (msg != NULL, GST_SDP_EINVAL);
|
|
|
|
g_print ("sdp packet %p:\n", msg);
|
|
g_print (" version: '%s'\n", GST_STR_NULL (msg->version));
|
|
g_print (" origin:\n");
|
|
g_print (" username: '%s'\n", GST_STR_NULL (msg->origin.username));
|
|
g_print (" sess_id: '%s'\n", GST_STR_NULL (msg->origin.sess_id));
|
|
g_print (" sess_version: '%s'\n", GST_STR_NULL (msg->origin.sess_version));
|
|
g_print (" nettype: '%s'\n", GST_STR_NULL (msg->origin.nettype));
|
|
g_print (" addrtype: '%s'\n", GST_STR_NULL (msg->origin.addrtype));
|
|
g_print (" addr: '%s'\n", GST_STR_NULL (msg->origin.addr));
|
|
g_print (" session_name: '%s'\n", GST_STR_NULL (msg->session_name));
|
|
g_print (" information: '%s'\n", GST_STR_NULL (msg->information));
|
|
g_print (" uri: '%s'\n", GST_STR_NULL (msg->uri));
|
|
|
|
if (msg->emails->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" emails:\n");
|
|
for (i = 0; i < msg->emails->len; i++) {
|
|
g_print (" email '%s'\n", g_array_index (msg->emails, gchar *, i));
|
|
}
|
|
}
|
|
if (msg->phones->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" phones:\n");
|
|
for (i = 0; i < msg->phones->len; i++) {
|
|
g_print (" phone '%s'\n", g_array_index (msg->phones, gchar *, i));
|
|
}
|
|
}
|
|
g_print (" connection:\n");
|
|
g_print (" nettype: '%s'\n", GST_STR_NULL (msg->connection.nettype));
|
|
g_print (" addrtype: '%s'\n", GST_STR_NULL (msg->connection.addrtype));
|
|
g_print (" address: '%s'\n", GST_STR_NULL (msg->connection.address));
|
|
g_print (" ttl: '%u'\n", msg->connection.ttl);
|
|
g_print (" addr_number: '%u'\n", msg->connection.addr_number);
|
|
if (msg->bandwidths->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" bandwidths:\n");
|
|
for (i = 0; i < msg->bandwidths->len; i++) {
|
|
GstSDPBandwidth *bw =
|
|
&g_array_index (msg->bandwidths, GstSDPBandwidth, i);
|
|
|
|
g_print (" type: '%s'\n", GST_STR_NULL (bw->bwtype));
|
|
g_print (" bandwidth: '%u'\n", bw->bandwidth);
|
|
}
|
|
}
|
|
g_print (" key:\n");
|
|
g_print (" type: '%s'\n", GST_STR_NULL (msg->key.type));
|
|
g_print (" data: '%s'\n", GST_STR_NULL (msg->key.data));
|
|
if (msg->attributes->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" attributes:\n");
|
|
for (i = 0; i < msg->attributes->len; i++) {
|
|
GstSDPAttribute *attr =
|
|
&g_array_index (msg->attributes, GstSDPAttribute, i);
|
|
|
|
g_print (" attribute '%s' : '%s'\n", attr->key, attr->value);
|
|
}
|
|
}
|
|
if (msg->medias->len > 0) {
|
|
guint i;
|
|
|
|
g_print (" medias:\n");
|
|
for (i = 0; i < msg->medias->len; i++) {
|
|
g_print (" media %u:\n", i);
|
|
print_media (&g_array_index (msg->medias, GstSDPMedia, i));
|
|
}
|
|
}
|
|
return GST_SDP_OK;
|
|
}
|