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oRTP: include/ortp/telephonyevents.h Source File
oRTP  0.24.0
telephonyevents.h
Go to the documentation of this file.
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 
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);
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
ORTP_PUBLIC int rtp_session_recv_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:75
ORTP_PUBLIC int rtp_session_read_telephone_event(RtpSession *session, mblk_t *packet, telephone_event_t **tab)
Definition: telephonyevents.c:303
Definition: rtpsession.h:348
Definition: str_utils.h:49
ORTP_PUBLIC int rtp_session_send_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:63
ORTP_PUBLIC int rtp_session_send_dtmf2(RtpSession *session, char dtmf, uint32_t userts, int duration)
Definition: telephonyevents.c:186
ORTP_PUBLIC int rtp_session_telephone_events_supported(RtpSession *session)
Definition: telephonyevents.c:44
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:136
The RtpSession api.
ORTP_PUBLIC int rtp_session_send_dtmf(RtpSession *session, char dtmf, uint32_t userts)
Definition: telephonyevents.c:172
Definition: telephonyevents.h:33
ORTP_PUBLIC mblk_t * rtp_session_create_telephone_event_packet(RtpSession *session, int start)
Definition: telephonyevents.c:94