/* GStreamer * Copyright (C) <2005,2006> Wim Taymans * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, 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. */ #ifndef __GST_SDP_MESSAGE_H__ #define __GST_SDP_MESSAGE_H__ #include #include #include G_BEGIN_DECLS /** * GstSDPOrigin: * @username: the user's login on the originating host, or it is "-" * if the originating host does not support the concept of user ids. * @sess_id: is a numeric string such that the tuple of @username, @sess_id, * @nettype, @addrtype and @addr form a globally unique identifier for the * session. * @sess_version: a version number for this announcement * @nettype: the type of network. "IN" is defined to have the meaning * "Internet". * @addrtype: the type of @addr. * @addr: the globally unique address of the machine from which the session was * created. * * The contents of the SDP "o=" field which gives the originator of the session * (their username and the address of the user's host) plus a session id and * session version number. */ typedef struct { gchar *username; gchar *sess_id; gchar *sess_version; gchar *nettype; gchar *addrtype; gchar *addr; } GstSDPOrigin; /** * GstSDPConnection: * @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 * * The contents of the SDP "c=" field which contains connection data. */ typedef struct { gchar *nettype; gchar *addrtype; gchar *address; guint ttl; guint addr_number; } GstSDPConnection; /** * GST_SDP_BWTYPE_CT: * * The Conference Total bandwidth modifier. */ #define GST_SDP_BWTYPE_CT "CT" /** * GST_SDP_BWTYPE_AS: * * The Application-Specific Maximum bandwidth modifier. */ #define GST_SDP_BWTYPE_AS "AS" /** * GST_SDP_BWTYPE_EXT_PREFIX: * * The extension prefix bandwidth modifier. */ #define GST_SDP_BWTYPE_EXT_PREFIX "X-" /** * GST_SDP_BWTYPE_RS: * * RTCP bandwidth allocated to active data senders (RFC 3556). */ #define GST_SDP_BWTYPE_RS "RS" /** * GST_SDP_BWTYPE_RR: * * RTCP bandwidth allocated to data receivers (RFC 3556). */ #define GST_SDP_BWTYPE_RR "RR" /** * GST_SDP_BWTYPE_TIAS: * * Transport Independent Application Specific Maximum bandwidth (RFC 3890). */ #define GST_SDP_BWTYPE_TIAS "TIAS" /** * GstSDPBandwidth: * @bwtype: the bandwidth modifier type * @bandwidth: the bandwidth in kilobits per second * * The contents of the SDP "b=" field which specifies the proposed bandwidth to * be used by the session or media. */ typedef struct { gchar *bwtype; guint bandwidth; } GstSDPBandwidth; /** * GstSDPTime: * @start: start time for the conference. The value is the decimal * representation of Network Time Protocol (NTP) time values in seconds * @stop: stop time for the conference. The value is the decimal * representation of Network Time Protocol (NTP) time values in seconds * @repeat: repeat times for a session * * The contents of the SDP "t=" field which specify the start and stop times for * a conference session. */ typedef struct { gchar *start; gchar *stop; GArray *repeat; } GstSDPTime; /** * GstSDPZone: * @time: the NTP time that a time zone adjustment happens * @typed_time: the offset from the time when the session was first scheduled * * The contents of the SDP "z=" field which allows the sender to * specify a list of time zone adjustments and offsets from the base * time. */ typedef struct { gchar *time; gchar *typed_time; } GstSDPZone; /** * GstSDPKey: * @type: the encryption type * @data: the encryption data * * The contents of the SDP "k=" field which is used to convey encryption * keys. */ typedef struct { gchar *type; gchar *data; } GstSDPKey; /** * GstSDPAttribute: * @key: the attribute key * @value: the attribute value or NULL when it was a property attribute * * The contents of the SDP "a=" field which contains a key/value pair. */ typedef struct { gchar *key; gchar *value; } GstSDPAttribute; /** * GstSDPMedia: * @media: the media type * @port: the transport port to which the media stream will be sent * @num_ports: the number of ports or -1 if only one port was specified * @proto: the transport protocol * @fmts: an array of #gchar formats * @information: the media title * @connections: array of #GstSDPConnection with media connection information * @bandwidths: array of #GstSDPBandwidth with media bandwidth information * @key: the encryption key * @attributes: array of #GstSDPAttribute with the additional media attributes * * The contents of the SDP "m=" field with all related fields. */ typedef struct { gchar *media; guint port; guint num_ports; gchar *proto; GArray *fmts; gchar *information; GArray *connections; GArray *bandwidths; GstSDPKey key; GArray *attributes; } GstSDPMedia; /** * GstSDPMessage: * @version: the protocol version * @origin: owner/creator and session identifier * @session_name: session name * @information: session information * @uri: URI of description * @emails: array of #gchar with email addresses * @phones: array of #gchar with phone numbers * @connection: connection information for the session * @bandwidths: array of #GstSDPBandwidth with bandwidth information * @times: array of #GstSDPTime with time descriptions * @zones: array of #GstSDPZone with time zone adjustments * @key: encryption key * @attributes: array of #GstSDPAttribute with session attributes * @medias: array of #GstSDPMedia with media descriptions * * The contents of the SDP message. */ typedef struct { gchar *version; GstSDPOrigin origin; gchar *session_name; gchar *information; gchar *uri; GArray *emails; GArray *phones; GstSDPConnection connection; GArray *bandwidths; GArray *times; GArray *zones; GstSDPKey key; GArray *attributes; GArray *medias; } GstSDPMessage; /* Session descriptions */ GstSDPResult gst_sdp_message_new (GstSDPMessage **msg); GstSDPResult gst_sdp_message_init (GstSDPMessage *msg); GstSDPResult gst_sdp_message_uninit (GstSDPMessage *msg); GstSDPResult gst_sdp_message_free (GstSDPMessage *msg); GstSDPResult gst_sdp_message_parse_buffer (const guint8 *data, guint size, GstSDPMessage *msg); gchar* gst_sdp_message_as_text (const GstSDPMessage *msg); /* convert from/to uri */ GstSDPResult gst_sdp_message_parse_uri (const gchar *uri, GstSDPMessage *msg); gchar* gst_sdp_message_as_uri (const gchar *scheme, const GstSDPMessage *msg); /* utils */ gboolean gst_sdp_address_is_multicast (const gchar *nettype, const gchar *addrtype, const gchar *addr); /* v=.. */ const gchar* gst_sdp_message_get_version (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_version (GstSDPMessage *msg, const gchar *version); /* o= */ const GstSDPOrigin* gst_sdp_message_get_origin (const GstSDPMessage *msg); 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); /* s= */ const gchar* gst_sdp_message_get_session_name (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_session_name (GstSDPMessage *msg, const gchar *session_name); /* i= */ const gchar* gst_sdp_message_get_information (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_information (GstSDPMessage *msg, const gchar *information); /* u= */ const gchar* gst_sdp_message_get_uri (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_uri (GstSDPMessage *msg, const gchar *uri); /* e= */ guint gst_sdp_message_emails_len (const GstSDPMessage *msg); const gchar* gst_sdp_message_get_email (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_email (GstSDPMessage *msg, const gchar *email); /* p= */ guint gst_sdp_message_phones_len (const GstSDPMessage *msg); const gchar* gst_sdp_message_get_phone (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_phone (GstSDPMessage *msg, const gchar *phone); /* c= [/][/] */ const GstSDPConnection* gst_sdp_message_get_connection (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_connection (GstSDPMessage *msg, const gchar *nettype, const gchar *addrtype, const gchar *address, guint ttl, guint addr_number); /* b=: */ guint gst_sdp_message_bandwidths_len (const GstSDPMessage *msg); const GstSDPBandwidth* gst_sdp_message_get_bandwidth (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_bandwidth (GstSDPMessage *msg, const gchar *bwtype, guint bandwidth); /* t= and * r= */ guint gst_sdp_message_times_len (const GstSDPMessage *msg); const GstSDPTime* gst_sdp_message_get_time (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_time (GstSDPMessage *msg, const gchar *start, const gchar *stop, const gchar **repeat); /* z= .... */ guint gst_sdp_message_zones_len (const GstSDPMessage *msg); const GstSDPZone* gst_sdp_message_get_zone (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_zone (GstSDPMessage *msg, const gchar *adj_time, const gchar *typed_time); /* k=[:] */ const GstSDPKey* gst_sdp_message_get_key (const GstSDPMessage *msg); GstSDPResult gst_sdp_message_set_key (GstSDPMessage *msg, const gchar *type, const gchar *data); /* a=... */ guint gst_sdp_message_attributes_len (const GstSDPMessage *msg); const GstSDPAttribute* gst_sdp_message_get_attribute (const GstSDPMessage *msg, guint idx); const gchar* gst_sdp_message_get_attribute_val (const GstSDPMessage *msg, const gchar *key); const gchar* gst_sdp_message_get_attribute_val_n (const GstSDPMessage *msg, const gchar *key, guint nth); GstSDPResult gst_sdp_message_add_attribute (GstSDPMessage *msg, const gchar *key, const gchar *value); /* m=.. sections */ guint gst_sdp_message_medias_len (const GstSDPMessage *msg); const GstSDPMedia* gst_sdp_message_get_media (const GstSDPMessage *msg, guint idx); GstSDPResult gst_sdp_message_add_media (GstSDPMessage *msg, GstSDPMedia *media); GstSDPResult gst_sdp_message_dump (const GstSDPMessage *msg); /* Media descriptions */ GstSDPResult gst_sdp_media_new (GstSDPMedia **media); GstSDPResult gst_sdp_media_init (GstSDPMedia *media); GstSDPResult gst_sdp_media_uninit (GstSDPMedia *media); GstSDPResult gst_sdp_media_free (GstSDPMedia *media); gchar* gst_sdp_media_as_text (const GstSDPMedia *media); /* m= / ... */ const gchar* gst_sdp_media_get_media (const GstSDPMedia *media); GstSDPResult gst_sdp_media_set_media (GstSDPMedia *media, const gchar *med); guint gst_sdp_media_get_port (const GstSDPMedia *media); guint gst_sdp_media_get_num_ports (const GstSDPMedia *media); GstSDPResult gst_sdp_media_set_port_info (GstSDPMedia *media, guint port, guint num_ports); const gchar* gst_sdp_media_get_proto (const GstSDPMedia *media); GstSDPResult gst_sdp_media_set_proto (GstSDPMedia *media, const gchar *proto); guint gst_sdp_media_formats_len (const GstSDPMedia *media); const gchar* gst_sdp_media_get_format (const GstSDPMedia *media, guint idx); GstSDPResult gst_sdp_media_add_format (GstSDPMedia *media, const gchar *format); /* i= */ const gchar* gst_sdp_media_get_information (const GstSDPMedia *media); GstSDPResult gst_sdp_media_set_information (GstSDPMedia *media, const gchar *information); /* c= [/][/] */ guint gst_sdp_media_connections_len (const GstSDPMedia *media); const GstSDPConnection* gst_sdp_media_get_connection (const GstSDPMedia *media, guint idx); GstSDPResult gst_sdp_media_add_connection (GstSDPMedia *media, const gchar *nettype, const gchar *addrtype, const gchar *address, guint ttl, guint addr_number); /* b=: */ guint gst_sdp_media_bandwidths_len (const GstSDPMedia *media); const GstSDPBandwidth* gst_sdp_media_get_bandwidth (const GstSDPMedia *media, guint idx); GstSDPResult gst_sdp_media_add_bandwidth (GstSDPMedia *media, const gchar *bwtype, guint bandwidth); /* k=: */ const GstSDPKey* gst_sdp_media_get_key (const GstSDPMedia *media); GstSDPResult gst_sdp_media_set_key (GstSDPMedia *media, const gchar *type, const gchar *data); /* a=... */ guint gst_sdp_media_attributes_len (const GstSDPMedia *media); const GstSDPAttribute * gst_sdp_media_get_attribute (const GstSDPMedia *media, guint idx); const gchar* gst_sdp_media_get_attribute_val (const GstSDPMedia *media, const gchar *key); const gchar* gst_sdp_media_get_attribute_val_n (const GstSDPMedia *media, const gchar *key, guint nth); GstSDPResult gst_sdp_media_add_attribute (GstSDPMedia *media, const gchar *key, const gchar *value); G_END_DECLS #endif /* __GST_SDP_MESSAGE_H__ */