/usr/include/ortp/telephonyevents.h is in libortp-dev 3.3.2-4.1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | /*
The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) stack.
Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* \file telephonyevents.h
* \brief Receiving and sending telephone events (RFC2833)
*
**/
#ifndef TELEPHONYEVENTS_H
#define TELEPHONYEVENTS_H
#include <ortp/rtpsession.h>
struct _telephone_event
{
#ifdef ORTP_BIGENDIAN
uint32_t event:8;
uint32_t E:1;
uint32_t R:1;
uint32_t volume:6;
uint32_t duration:16;
#else
uint32_t event:8;
uint32_t volume:6;
uint32_t R:1;
uint32_t E:1;
uint32_t duration:16;
#endif
};
typedef struct _telephone_event telephone_event_t;
#ifdef __cplusplus
extern "C" {
#endif
/* tell if the session supports telephony events. For this the telephony events payload_type
must be present in the rtp profile used by the session */
/* low level functions */
int rtp_session_telephone_events_supported(RtpSession *session);
int rtp_session_send_telephone_events_supported(RtpSession *session);
int rtp_session_recv_telephone_events_supported(RtpSession *session);
mblk_t *rtp_session_create_telephone_event_packet(RtpSession *session, int start);
int rtp_session_add_telephone_event(RtpSession *session,
mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration);
int rtp_session_read_telephone_event(RtpSession *session,
mblk_t *packet,telephone_event_t **tab);
/* high level functions*/
int rtp_session_send_dtmf(RtpSession *session, char dtmf, uint32_t userts);
int rtp_session_send_dtmf2(RtpSession *session, char dtmf, uint32_t userts, int duration);
/* for high level telephony event callback */
void rtp_session_check_telephone_events(RtpSession *session, mblk_t *m0);
#ifdef __cplusplus
}
#endif
/* the size allocated for telephony events packets */
#define TELEPHONY_EVENTS_ALLOCATED_SIZE (4*sizeof(telephone_event_t))
/* list of named events */
#define TEV_DTMF_0 (0)
#define TEV_DTMF_1 (1)
#define TEV_DTMF_2 (2)
#define TEV_DTMF_3 (3)
#define TEV_DTMF_4 (4)
#define TEV_DTMF_5 (5)
#define TEV_DTMF_6 (6)
#define TEV_DTMF_7 (7)
#define TEV_DTMF_8 (8)
#define TEV_DTMF_9 (9)
#define TEV_DTMF_STAR (10)
#define TEV_DTMF_POUND (11)
#define TEV_DTMF_A (12)
#define TEV_DTMF_B (13)
#define TEV_DTMF_C (14)
#define TEV_DTMF_D (15)
#define TEV_FLASH (16)
#endif
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