mirror of https://github.com/mpv-player/mpv
729 lines
19 KiB
C
729 lines
19 KiB
C
/*
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This file is part of FreeSDP
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Copyright (C) 2001,2002,2003 Federico Montesino Pouzols <fedemp@altern.org>
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FreeSDP is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Benjamin Zores, (C) 2006
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added support in parser for the a=control: lines.
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added support in parser for the a=range: lines.
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*/
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/**
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* @file parser.h
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* @ingroup parser
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* @short Specific public header for parsing module.
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**/
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#ifndef FSDP_PARSER_H
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#define FSDP_PARSER_H
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#include "common.h"
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BEGIN_C_DECLS
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/**
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* @defgroup parser FreeSDP Parsing Module
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*
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* SDP descriptions parsing routines.
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* @{
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**/
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/**
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* Parse a SDP description in <code>description</code>, extracting the
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* session properties into <code>dsc</code>. These properties can be
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* obtained individually later using the <code>fsdp_get_xxxx<code>
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* functions.
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*
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* @param description a multimedia session description formatted in
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* SDP.
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* @param dsc pointer that is updated to point to a fsdp_description_t
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* object. This fsdp_description_t object should have been previously
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* allocated using <code>fsdp_description_new()</code>; to free it,
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* <code>fsdp_description_delete()</code> should be used.
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*
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* @return FSDPE_OK when parsing completes successfully. Otherwise,
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* another error code is returned.
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**/
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fsdp_error_t fsdp_parse (const char *description, fsdp_description_t * dsc);
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/**
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* Get the SDP protocol version of the description.
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*
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* @return SDP protocol version number.
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**/
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unsigned int fsdp_get_version (const fsdp_description_t * dsc);
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/**
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* Get the username provided by the originator of the session.
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*
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* @param dsc SDP description object.
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* @return username of the session owner
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**/
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const char *fsdp_get_owner_username (const fsdp_description_t * dsc);
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/**
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* Get the id for the session described in <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return id string for this session.
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**/
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const char *fsdp_get_session_id (const fsdp_description_t * dsc);
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/**
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* Get the announcement version for the session description in
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return announcement version string for this description.
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**/
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const char *fsdp_get_announcement_version (const fsdp_description_t * dsc);
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/**
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* Get the the type of network the owner of the session described in
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* <code>dsc</code> is based on.
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*
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* @param dsc SDP description object.
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* @return network type for the owner of this session.
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**/
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fsdp_network_type_t
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fsdp_get_owner_network_type (const fsdp_description_t * dsc);
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/**
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* Get the the type of address the owner of the session described in
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* <code>dsc</code> is based on.
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*
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* @param dsc SDP description object.
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* @return network address type for the owner of this session.
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**/
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fsdp_address_type_t
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fsdp_get_owner_address_type (const fsdp_description_t * dsc);
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/**
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* Get the network address of the owner of the session described in
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return network address for the owner this session.
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**/
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const char *fsdp_get_owner_address (const fsdp_description_t * dsc);
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/**
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* Get the name of the session described in <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return name of this session.
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**/
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const char *fsdp_get_name (const fsdp_description_t * dsc);
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/**
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* Get the information about the session provided in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return information of this session.
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**/
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const char *fsdp_get_information (const fsdp_description_t * dsc);
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/**
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* Get an URI about the session provided in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return string containing an URI about the session. NULL if the
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* session uri is missing.
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**/
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const char *fsdp_get_uri (const fsdp_description_t * dsc);
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/**
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* Get the number of emails specified for the session in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return number of emails.
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**/
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unsigned int fsdp_get_emails_count (const fsdp_description_t * dsc);
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/**
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* Get the n-th email specified for the session in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @param index number of URI. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_emails_count() - 1.
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* @return string containing an email about the session. NULL if there
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* is no such index.
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**/
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const char *fsdp_get_email (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the number of phones specified for the session in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @return number of emails.
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**/
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unsigned int fsdp_get_phones_count (const fsdp_description_t * dsc);
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/**
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* Get the n-th phone specified for the session in the description
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* <code>dsc</code>.
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*
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* @param dsc SDP description object.
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* @param index number of URI. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_phones_count() - 1.
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* @return string containing a phone about the session. NULL if there
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* is no such index.
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**/
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const char *fsdp_get_phone (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the the global type of network of the multimedia session
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* connection.
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*
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* @param dsc SDP description object.
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* @return global network type for this
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* connection. FSDP_NETWORK_TYPE_UNDEFINED if no global network
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* address type is included in the description.
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**/
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fsdp_network_type_t
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fsdp_get_global_conn_network_type (const fsdp_description_t * dsc);
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/**
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* Get the the global type of network address of the multimedia
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* session connection.
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*
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* @param dsc SDP description object.
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* @return global network address type for this connection.
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* FSDP_ADDRESS_TYPE_UNDEFINED if no global network address type is
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* included in the description.
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**/
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fsdp_address_type_t
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fsdp_get_global_conn_address_type (const fsdp_description_t * dsc);
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/**
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* Get the the global address of the multimedia session connection.
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*
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* @param dsc SDP description object.
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* @return global address for this connection.
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**/
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const char *fsdp_get_global_conn_address (const fsdp_description_t * dsc);
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unsigned int
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fsdp_get_global_conn_address_ttl (const fsdp_description_t * dsc);
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unsigned int
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fsdp_get_global_conn_address_count (const fsdp_description_t * dsc);
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/**
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* Get the number of bandwidth modifiers specified for this session.
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*
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* @param dsc SDP description object.
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* @return number of bandwidth modifiers.
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**/
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unsigned int fsdp_get_bw_modifier_count (const fsdp_description_t * dsc);
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/**
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* Get the bandwidth modifier type for the session.
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*
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* @param dsc SDP description object.
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* @param index number of bandwidth modifier.
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*
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* @return global bandwidth modifier type.
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* @retval FSDP_BW_MOD_TYPE_UNDEFINED if no global bandwith modifier
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* type is defined or invalid index.
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* @retval FSDP_BW_MOD_TYPE_UNKNOWN if an unknown bandwith modifier is
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* specified or an invalid index is provided. In this case
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* fsdp_get_bw_modifer_type_unknown() can be called to get the
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* modifier as a character string.
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**/
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fsdp_bw_modifier_type_t
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fsdp_get_bw_modifier_type (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the textual bandwidth modifier type when it is unknown.
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*
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* @param dsc SDP description object.
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* @param index number of bandwidth modifier.
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*
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* @return global bandwidth modifier type.
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* @retval empty string if the provided bandwidth type is not unknown,
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* the provided index is invalid or or there was a parse error.
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**/
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const char *fsdp_get_bw_modifier_type_unknown (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the value for the bandwidth modifier.
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*
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* @param dsc SDP description object.
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* @param index number of bandwidth modifier.
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* @return global bandwidth value.
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* @retval 0 if no bandwidth is specified for this session or an
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* invalid index has been provided.
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**/
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unsigned long int
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fsdp_get_bw_value (const fsdp_description_t * dsc, unsigned int index);
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/**
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* Get the number of time periods specified for this session
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*
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* @param dsc SDP description object.
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* @return number of time periods
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**/
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unsigned long int fsdp_get_period_count (const fsdp_description_t * dsc);
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/**
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* Get the start time for the period selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of time period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @return start time
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* @retval 0 if an invalid index is provided.
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**/
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time_t
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fsdp_get_period_start (const fsdp_description_t * dsc, unsigned int index);
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/**
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* Get the stop time for the period selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of time period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @return stop time
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* @retval 0 if an invalid index is provided.
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**/
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time_t
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fsdp_get_period_stop (const fsdp_description_t * dsc, unsigned int index);
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/**
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* Get the number of repeats for the period selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of the period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @return number of repeats
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* @retval 0 if an invalid index is provided.
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**/
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unsigned int
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fsdp_get_period_repeats_count (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the interval time of the repeat selected by rindex for the
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* period selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of time period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @param rindex number of repeat
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* @return interval time
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* @retval 0 if an invalid index is provided.
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**/
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unsigned long int
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fsdp_get_period_repeat_interval (const fsdp_description_t * dsc,
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unsigned int index, unsigned int rindex);
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/**
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* Get the duration of the repeat selected by rindex for the period
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* selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of time period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @param rindex number of repeat
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* @return duration
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* @retval 0 if an invalid index is provided.
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**/
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unsigned long int
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fsdp_get_period_repeat_duration (const fsdp_description_t * dsc,
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unsigned int index, unsigned int rindex);
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/**
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* Get the offsets of the repeat selected by rindex for the period
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* selected by index.
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*
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* @param dsc SDP description object.
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* @param index number of time period. Note that this index follows the
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* traditional C convention: from 0 to fsdp_get_period_count() - 1.
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* @param rindex number of repeat
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* @return array of offsets
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* @retval NULL if an invalid index is provided.
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**/
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const unsigned long int *fsdp_get_period_repeat_offsets (const
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fsdp_description_t *
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dsc,
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unsigned int index,
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unsigned int rindex);
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/**
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* Get the encryption method defined for this session.
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*
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* @param dsc SDP description object.
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* @return encryption method. FSDP_ENCRYPTION_METHOD_UNDEFINED if no
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* encryption method is specified.
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**/
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fsdp_encryption_method_t
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fsdp_get_encryption_method (const fsdp_description_t * dsc);
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/**
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* Get the encryption key or a URI pointing to the encryption key for
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* this session.
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*
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* @param dsc SDP description object.
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* @return encryption key unless FSDP_ENCRYPTION_METHOD_URI is
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* specified, in which case a URI pointing to the key is returned. If
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* the global encryption method is undefined, NULL is returned.
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**/
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const char *fsdp_get_encryption_content (const fsdp_description_t * dsc);
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/**
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* Get timezone adjustments.
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*
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* @param dsc SDP description object.
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* @return string with list of timezone adjustments
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* @retval NULL if no timezone adjustment list was specified or there
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* was a parse error.
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**/
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const char *fsdp_get_timezone_adj (const fsdp_description_t * dsc);
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/**
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*
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**/
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unsigned int
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fsdp_get_unidentified_attribute_count (const fsdp_description_t * dsc);
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/**
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*
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**/
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const char *fsdp_get_unidentified_attribute (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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*
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**/
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unsigned int
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fsdp_get_media_rtpmap_count (const fsdp_media_description_t * mdsc);
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/**
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*
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**/
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const char *fsdp_get_media_rtpmap_payload_type (const fsdp_media_description_t
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* mdsc, unsigned int index);
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/**
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*
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**/
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const char *fsdp_get_media_rtpmap_encoding_name (const
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fsdp_media_description_t *
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mdsc, unsigned int index);
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/**
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*
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**/
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unsigned int
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fsdp_get_media_rtpmap_clock_rate (const fsdp_media_description_t * mdsc,
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unsigned int index);
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/**
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*
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**/
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const char *fsdp_get_media_rtpmap_encoding_parameters (const
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fsdp_description_t *
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mdsc,
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unsigned int index);
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/**
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* Get the value of the session attribute specified in
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* <code>att</code>. This function works for all the session
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* attributes whose value is a character string. These attributes are
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* defined in the session_string_attribute_t enumerated type.
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*
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* @param dsc SDP description object.
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* @param att attribute to get.
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*
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* @return value of the attribute <code>att</code>.
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* @retval NULL if the attribute was not specified or there was a
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* parse error or an invalid att is given.
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**/
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const char *fsdp_get_str_att (const fsdp_description_t * dsc,
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fsdp_session_str_att_t att);
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/**
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*
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**/
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unsigned int fsdp_get_sdplang_count (const fsdp_description_t * dsc);
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/**
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*
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**/
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const char *fsdp_get_sdplang (const fsdp_description_t * dsc,
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unsigned int index);
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/**
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* Get the mode of the conference, specified with attributes sendrecv,
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* sendonly, recvonly and inactive.
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*
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* @param dsc SDP description object.
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* @return send/rec conference mode.
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* @retval FSDP_SENDRECV_UNDEFINED if conference mode not provided.
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**/
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fsdp_sendrecv_mode_t fsdp_get_sendrecv_mode (const fsdp_description_t * dsc);
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/**
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* Get the type of conference, such as broadcast, meeting, moderated,
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* test or H332.
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*
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* @param dsc SDP description object.
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* @return conference type.
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* @retval FSDP_SESSION_TYPE_UNDEFINED if conference type not provided.
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**/
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fsdp_session_type_t fsdp_get_session_type (const fsdp_description_t * dsc);
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/**
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*
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**/
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unsigned int fsdp_get_media_count (const fsdp_description_t * dsc);
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/**
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*
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**/
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const fsdp_media_description_t *fsdp_get_media (const fsdp_description_t *
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dsc, unsigned int index);
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/**
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*
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**/
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fsdp_media_t fsdp_get_media_type (const fsdp_media_description_t * dsc);
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/**
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*
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**/
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unsigned int fsdp_get_media_port (const fsdp_media_description_t * dsc);
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unsigned int fsdp_get_media_port_count (const fsdp_media_description_t * dsc);
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/**
|
|
*
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|
**/
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fsdp_transport_protocol_t
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fsdp_get_media_transport_protocol (const fsdp_media_description_t * dsc);
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/**
|
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*
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|
**/
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const char *fsdp_get_media_formats (const fsdp_media_description_t * dsc);
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/**
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|
*
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|
**/
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unsigned int
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|
fsdp_get_media_formats_count (const fsdp_media_description_t * dsc);
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/**
|
|
*
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|
**/
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const char *fsdp_get_media_format (const fsdp_media_description_t * dsc,
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unsigned int index);
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/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_title (const fsdp_media_description_t * dsc);
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/**
|
|
*
|
|
**/
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|
fsdp_network_type_t
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|
fsdp_get_media_network_type (const fsdp_media_description_t * dsc);
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/**
|
|
*
|
|
**/
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|
fsdp_address_type_t
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|
fsdp_get_media_address_type (const fsdp_media_description_t * dsc);
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/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_address (const fsdp_media_description_t * dsc);
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|
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unsigned int
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fsdp_get_media_address_ttl (const fsdp_media_description_t * mdsc);
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unsigned int
|
|
fsdp_get_media_address_count (const fsdp_media_description_t * mdsc);
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|
|
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/**
|
|
*
|
|
**/
|
|
fsdp_bw_modifier_type_t
|
|
fsdp_get_media_bw_modifier_type (const fsdp_media_description_t * dsc,
|
|
unsigned int index);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_bw_modifier_type_unknown (const
|
|
fsdp_media_description_t
|
|
* dsc,
|
|
unsigned int index);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned long int
|
|
fsdp_get_media_bw_value (const fsdp_media_description_t * dsc,
|
|
unsigned int index);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
fsdp_encryption_method_t
|
|
fsdp_get_media_encryption_method (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_encryption_content (const fsdp_media_description_t
|
|
* dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int fsdp_get_media_ptime (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int fsdp_get_media_maxptime (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int
|
|
fsdp_get_media_fmtp_count (const fsdp_media_description_t * mdsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_fmtp (const fsdp_media_description_t * mdsc,
|
|
unsigned int index);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int
|
|
fsdp_get_media_sdplang_count (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_sdplang (const fsdp_media_description_t * dsc,
|
|
unsigned int index);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int fsdp_get_media_lang_count (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_lang (const fsdp_media_description_t * dsc,
|
|
unsigned int index);
|
|
|
|
|
|
unsigned int fsdp_get_control_count (const fsdp_description_t * dsc);
|
|
|
|
const char *fsdp_get_control (const fsdp_description_t * dsc,
|
|
unsigned int index);
|
|
|
|
const char *fsdp_get_range (const fsdp_description_t * dsc);
|
|
|
|
unsigned int
|
|
fsdp_get_media_control_count (const fsdp_media_description_t * mdsc);
|
|
|
|
char *fsdp_get_media_control (const fsdp_media_description_t * mdsc,
|
|
unsigned int index);
|
|
|
|
char *fsdp_get_media_range (const fsdp_media_description_t * mdsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
fsdp_orient_t fsdp_get_media_orient (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
fsdp_sendrecv_mode_t
|
|
fsdp_get_media_sendrecv (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
float fsdp_get_media_framerate (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int fsdp_get_media_quality (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int fsdp_get_media_rtcp_port (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
fsdp_network_type_t
|
|
fsdp_get_media_rtcp_network_type (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
fsdp_address_type_t
|
|
fsdp_get_media_rtcp_address_type (const fsdp_media_description_t * dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_rtcp_address (const fsdp_media_description_t *
|
|
dsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
unsigned int
|
|
fsdp_get_media_unidentified_attribute_count (const fsdp_media_description_t
|
|
* mdsc);
|
|
|
|
/**
|
|
*
|
|
**/
|
|
const char *fsdp_get_media_unidentified_attribute (const
|
|
fsdp_media_description_t *
|
|
mdsc, unsigned int index);
|
|
|
|
|
|
/** @} *//* closes parser group */
|
|
|
|
END_C_DECLS
|
|
#endif /* FSDP_PARSER_H */
|