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57a92a6a7c
Review: https://reviewboard.asterisk.org/r/795 git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@278908 65c4cc65-6c06-0410-ace0-fbb531ad65f3
157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* UDPTL support for T.38
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*
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* Copyright (C) 2005, Steve Underwood, partly based on RTP code which is
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* Copyright (C) 1999-2004, Digium, Inc.
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*
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* Steve Underwood <steveu@coppice.org>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*
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* A license has been granted to Digium (via disclaimer) for the use of
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* this code.
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*/
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/*! \file
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* \brief UDPTL support for T.38
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* \author Steve Underwood <steveu@coppice.org>
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* \ref udptl.c
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* \todo add doxygen documentation to this file!
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*/
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#ifndef _ASTERISK_UDPTL_H
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#define _ASTERISK_UDPTL_H
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#include "asterisk/network.h"
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#include "asterisk/frame.h"
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#include "asterisk/io.h"
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#include "asterisk/sched.h"
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#include "asterisk/channel.h"
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#include "asterisk/netsock2.h"
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enum ast_t38_ec_modes {
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UDPTL_ERROR_CORRECTION_NONE,
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UDPTL_ERROR_CORRECTION_FEC,
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UDPTL_ERROR_CORRECTION_REDUNDANCY
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};
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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struct ast_udptl_protocol {
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/*! \brief Get UDPTL struct, or NULL if unwilling to transfer */
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struct ast_udptl *(*get_udptl_info)(struct ast_channel *chan);
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/*! \brief Set UDPTL peer */
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int (* const set_udptl_peer)(struct ast_channel *chan, struct ast_udptl *peer);
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const char * const type;
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AST_RWLIST_ENTRY(ast_udptl_protocol) list;
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};
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struct ast_udptl;
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typedef int (*ast_udptl_callback)(struct ast_udptl *udptl, struct ast_frame *f, void *data);
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struct ast_udptl *ast_udptl_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int callbackmode, struct ast_sockaddr *in);
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/*!
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* \brief Associates a character string 'tag' with a UDPTL session.
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* \param udptl The UDPTL session.
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* \param format printf-style format string used to construct the tag
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*
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* This function formats a tag for the specified UDPTL
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* session, so that any log messages generated by the UDPTL stack
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* related to that session will include the tag and the reader of
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* the messages will be able to identify which endpoint caused them
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* to be generated.
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*
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* \retval none
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*/
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void __attribute__((format(printf, 2, 3))) ast_udptl_set_tag(struct ast_udptl *udptl, const char *format, ...);
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void ast_udptl_set_peer(struct ast_udptl *udptl, const struct ast_sockaddr *them);
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void ast_udptl_get_peer(const struct ast_udptl *udptl, struct ast_sockaddr *them);
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void ast_udptl_get_us(const struct ast_udptl *udptl, struct ast_sockaddr *us);
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void ast_udptl_destroy(struct ast_udptl *udptl);
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void ast_udptl_reset(struct ast_udptl *udptl);
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void ast_udptl_set_callback(struct ast_udptl *udptl, ast_udptl_callback callback);
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void ast_udptl_set_data(struct ast_udptl *udptl, void *data);
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int ast_udptl_write(struct ast_udptl *udptl, struct ast_frame *f);
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struct ast_frame *ast_udptl_read(struct ast_udptl *udptl);
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int ast_udptl_fd(const struct ast_udptl *udptl);
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int ast_udptl_setqos(struct ast_udptl *udptl, unsigned int tos, unsigned int cos);
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void ast_udptl_set_m_type(struct ast_udptl *udptl, unsigned int pt);
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void ast_udptl_set_udptlmap_type(struct ast_udptl *udptl, unsigned int pt,
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char *mimeType, char *mimeSubtype);
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enum ast_t38_ec_modes ast_udptl_get_error_correction_scheme(const struct ast_udptl *udptl);
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void ast_udptl_set_error_correction_scheme(struct ast_udptl *udptl, enum ast_t38_ec_modes ec);
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void ast_udptl_set_local_max_ifp(struct ast_udptl *udptl, unsigned int max_ifp);
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/*!
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* \brief retrieves local_max_datagram.
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*
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* \retval positive value representing max datagram size.
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* \retval 0 if no value is present
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*/
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unsigned int ast_udptl_get_local_max_datagram(struct ast_udptl *udptl);
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/*!
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* \brief sets far max datagram size. If max_datagram is = 0, the far max datagram
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* size is set to a default value.
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*/
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void ast_udptl_set_far_max_datagram(struct ast_udptl *udptl, unsigned int max_datagram);
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unsigned int ast_udptl_get_far_max_datagram(const struct ast_udptl *udptl);
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/*!
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* \brief retrieves far max ifp
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*
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* \retval positive value representing max ifp size
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* \retval 0 if no value is present
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*/
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unsigned int ast_udptl_get_far_max_ifp(struct ast_udptl *udptl);
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void ast_udptl_setnat(struct ast_udptl *udptl, int nat);
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int ast_udptl_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags,
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struct ast_frame **fo, struct ast_channel **rc);
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int ast_udptl_proto_register(struct ast_udptl_protocol *proto);
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void ast_udptl_proto_unregister(struct ast_udptl_protocol *proto);
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void ast_udptl_stop(struct ast_udptl *udptl);
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void ast_udptl_init(void);
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/*!
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* \version 1.6.1 return changed to int
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*/
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int ast_udptl_reload(void);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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