oRTP 0.25.0

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telephonyevents.h
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1 /*
2 The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) stack.
3 Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19
27 #ifndef TELEPHONYEVENTS_H
28 #define TELEPHONYEVENTS_H
29
30 #include <ortp/rtpsession.h>
31
32
33 struct _telephone_event
34 {
35 #ifdef ORTP_BIGENDIAN
36 uint32_t event:8;
37 uint32_t E:1;
38 uint32_t R:1;
39 uint32_t volume:6;
40 uint32_t duration:16;
41 #else
42 uint32_t event:8;
43 uint32_t volume:6;
44 uint32_t R:1;
45 uint32_t E:1;
46 uint32_t duration:16;
47 #endif
48 };
49
50 typedef struct _telephone_event telephone_event_t;
51
52 #ifdef __cplusplus
53 extern "C" {
54 #endif
55
56 /* tell if the session supports telephony events. For this the telephony events payload_type
57 must be present in the rtp profile used by the session */
58
59 /* low level functions */
60 ORTP_PUBLIC int rtp_session_telephone_events_supported(RtpSession *session);
61 ORTP_PUBLIC int rtp_session_send_telephone_events_supported(RtpSession *session);
62 ORTP_PUBLIC int rtp_session_recv_telephone_events_supported(RtpSession *session);
63 ORTP_PUBLIC mblk_t *rtp_session_create_telephone_event_packet(RtpSession *session, int start);
64
65 ORTP_PUBLIC int rtp_session_add_telephone_event(RtpSession *session,
66 mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration);
67
68 ORTP_PUBLIC int rtp_session_read_telephone_event(RtpSession *session,
69 mblk_t *packet,telephone_event_t **tab);
70
71 /* high level functions*/
72 ORTP_PUBLIC int rtp_session_send_dtmf(RtpSession *session, char dtmf, uint32_t userts);
73 ORTP_PUBLIC int rtp_session_send_dtmf2(RtpSession *session, char dtmf, uint32_t userts, int duration);
74 /* for high level telephony event callback */
75 ORTP_PUBLIC void rtp_session_check_telephone_events(RtpSession *session, mblk_t *m0);
76
77 #ifdef __cplusplus
78 }
79 #endif
80
81 /* the size allocated for telephony events packets */
82 #define TELEPHONY_EVENTS_ALLOCATED_SIZE (4*sizeof(telephone_event_t))
83
84 /* list of named events */
85 #define TEV_DTMF_0 (0)
86 #define TEV_DTMF_1 (1)
87 #define TEV_DTMF_2 (2)
88 #define TEV_DTMF_3 (3)
89 #define TEV_DTMF_4 (4)
90 #define TEV_DTMF_5 (5)
91 #define TEV_DTMF_6 (6)
92 #define TEV_DTMF_7 (7)
93 #define TEV_DTMF_8 (8)
94 #define TEV_DTMF_9 (9)
95 #define TEV_DTMF_STAR (10)
96 #define TEV_DTMF_POUND (11)
97 #define TEV_DTMF_A (12)
98 #define TEV_DTMF_B (13)
99 #define TEV_DTMF_C (14)
100 #define TEV_DTMF_D (15)
101 #define TEV_FLASH (16)
102
103
104 #endif
rtp_session_recv_telephone_events_supported
ORTP_PUBLIC int rtp_session_recv_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:75
rtp_session_read_telephone_event
ORTP_PUBLIC int rtp_session_read_telephone_event(RtpSession *session, mblk_t *packet, telephone_event_t **tab)
Definition: telephonyevents.c:318
_RtpSession
Definition: rtpsession.h:354
msgb
Definition: str_utils.h:49
rtp_session_send_telephone_events_supported
ORTP_PUBLIC int rtp_session_send_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:63
rtp_session_send_dtmf2
ORTP_PUBLIC int rtp_session_send_dtmf2(RtpSession *session, char dtmf, uint32_t userts, int duration)
Definition: telephonyevents.c:201
rtp_session_telephone_events_supported
ORTP_PUBLIC int rtp_session_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:44
rtp_session_add_telephone_event
ORTP_PUBLIC int rtp_session_add_telephone_event(RtpSession *session, mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration)
Definition: telephonyevents.c:151
rtpsession.h
The RtpSession api.
rtp_session_send_dtmf
ORTP_PUBLIC int rtp_session_send_dtmf(RtpSession *session, char dtmf, uint32_t userts)
Definition: telephonyevents.c:187
_telephone_event
Definition: telephonyevents.h:33
rtp_session_create_telephone_event_packet
ORTP_PUBLIC mblk_t * rtp_session_create_telephone_event_packet(RtpSession *session, int start)
Definition: telephonyevents.c:94