101 lines
3.0 KiB
C
Executable File
101 lines
3.0 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, Mark Spencer
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*
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* Mark Spencer <markster@linux-support.net>
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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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/*! Maximum RTP-specific code */
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#define AST_RTP_MAX AST_RTP_CN
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struct ast_rtp_protocol {
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struct ast_rtp *(*get_rtp_info)(struct ast_channel *chan); /* Get RTP struct, or NULL if unwilling to transfer */
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int (*set_rtp_peer)(struct ast_channel *chan, struct ast_rtp *peer); /* Set RTP peer */
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int (*get_rtp_willing)(struct ast_channel *chan); /* Willing to native bridge */
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char *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);
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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 *rpt, 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_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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int ast_rtp_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_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 rtp_pt_init(struct ast_rtp* rtp);
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void rtp_set_m_type(struct ast_rtp* rtp, int pt);
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void 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 rtp_lookup_pt(struct ast_rtp* rtp, int pt);
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int rtp_lookup_code(struct ast_rtp* rtp, int isAstFormat, int code);
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void 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* rtp_lookup_mime_subtype(int isAstFormat, int code);
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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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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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