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1f9ab2380a
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5490 65c4cc65-6c06-0410-ace0-fbb531ad65f3
129 lines
4.0 KiB
C
Executable File
129 lines
4.0 KiB
C
Executable File
/*
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* Asterisk -- A telephony toolkit for Linux.
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*
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* Real-time Transport Protocol support
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*
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* Copyright (C) 1999-2005, Digium
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*
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* Mark Spencer <markster@digium.com>
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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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#ifndef _ASTERISK_RTP_H
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#define _ASTERISK_RTP_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 <netinet/in.h>
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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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/* Codes for RTP-specific data - not defined by our AST_FORMAT codes */
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/*! DTMF (RFC2833) */
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#define AST_RTP_DTMF (1 << 0)
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/*! 'Comfort Noise' (RFC3389) */
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#define AST_RTP_CN (1 << 1)
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/*! DTMF (Cisco Proprietary) */
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#define AST_RTP_CISCO_DTMF (1 << 2)
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/*! Maximum RTP-specific code */
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#define AST_RTP_MAX AST_RTP_CISCO_DTMF
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struct ast_rtp_protocol {
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/* Get RTP struct, or NULL if unwilling to transfer */
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struct ast_rtp *(* const get_rtp_info)(struct ast_channel *chan);
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/* Get RTP struct, or NULL if unwilling to transfer */
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struct ast_rtp *(* const get_vrtp_info)(struct ast_channel *chan);
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/* Set RTP peer */
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int (* const set_rtp_peer)(struct ast_channel *chan, struct ast_rtp *peer, struct ast_rtp *vpeer, int codecs);
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int (* const get_codec)(struct ast_channel *chan);
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const char * const type;
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struct ast_rtp_protocol *next;
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};
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struct ast_rtp;
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typedef int (*ast_rtp_callback)(struct ast_rtp *rtp, struct ast_frame *f, void *data);
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struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode);
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struct ast_rtp *ast_rtp_new_with_bindaddr(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr in);
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void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them);
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void ast_rtp_get_peer(struct ast_rtp *rtp, struct sockaddr_in *them);
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void ast_rtp_get_us(struct ast_rtp *rtp, struct sockaddr_in *us);
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void ast_rtp_destroy(struct ast_rtp *rtp);
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void ast_rtp_reset(struct ast_rtp *rtp);
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void ast_rtp_set_callback(struct ast_rtp *rtp, ast_rtp_callback callback);
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void ast_rtp_set_data(struct ast_rtp *rtp, void *data);
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int ast_rtp_write(struct ast_rtp *rtp, struct ast_frame *f);
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struct ast_frame *ast_rtp_read(struct ast_rtp *rtp);
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struct ast_frame *ast_rtcp_read(struct ast_rtp *rtp);
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int ast_rtp_fd(struct ast_rtp *rtp);
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int ast_rtcp_fd(struct ast_rtp *rtp);
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int ast_rtp_senddigit(struct ast_rtp *rtp, char digit);
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int ast_rtp_sendcng(struct ast_rtp *rtp, int level);
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int ast_rtp_settos(struct ast_rtp *rtp, int tos);
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/* Setting RTP payload types from lines in a SDP description: */
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void ast_rtp_pt_clear(struct ast_rtp* rtp);
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/* Set payload types to defaults */
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void ast_rtp_pt_default(struct ast_rtp* rtp);
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void ast_rtp_set_m_type(struct ast_rtp* rtp, int pt);
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void ast_rtp_set_rtpmap_type(struct ast_rtp* rtp, int pt,
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char* mimeType, char* mimeSubtype);
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/* Mapping between RTP payload format codes and Asterisk codes: */
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struct rtpPayloadType ast_rtp_lookup_pt(struct ast_rtp* rtp, int pt);
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int ast_rtp_lookup_code(struct ast_rtp* rtp, int isAstFormat, int code);
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void ast_rtp_offered_from_local(struct ast_rtp* rtp, int local);
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void ast_rtp_get_current_formats(struct ast_rtp* rtp,
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int* astFormats, int* nonAstFormats);
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/* Mapping an Asterisk code into a MIME subtype (string): */
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char* ast_rtp_lookup_mime_subtype(int isAstFormat, int code);
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/* Build a string of MIME subtype names from a capability list */
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char *ast_rtp_lookup_mime_multiple(char *buf, int size, const int capability, const int isAstFormat);
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void ast_rtp_setnat(struct ast_rtp *rtp, int nat);
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int ast_rtp_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc);
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int ast_rtp_proto_register(struct ast_rtp_protocol *proto);
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void ast_rtp_proto_unregister(struct ast_rtp_protocol *proto);
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void ast_rtp_stop(struct ast_rtp *rtp);
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void ast_rtp_init(void);
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void ast_rtp_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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