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/*
The oRTP library is an RTP (Realtime Transport Protocol - rfc1889) 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
*/
#ifndef TELEPHONYEVENTS_H
#define TELEPHONYEVENTS_H
#include <rtpsession.h>
struct _telephone_event
{
#ifdef WORDS_BIGENDIAN
guint32 event:8;
guint32 E:1;
guint32 R:1;
guint32 volume:6;
guint32 duration:16;
#else
guint32 event:8;
guint32 volume:6;
guint32 R:1;
guint32 E:1;
guint32 duration:16;
#endif
};
typedef struct _telephone_event telephone_event_t;
#ifdef __cplusplus
extern "C" {
#endif
extern PayloadType telephone_event;
/* 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 */
gint rtp_session_telephone_events_supported(RtpSession *session);
mblk_t *rtp_session_create_telephone_event_packet(RtpSession *session, int start);
gint rtp_session_add_telephone_event(RtpSession *session,
mblk_t *packet, guchar event, gint end, guchar volume, guint16 duration);
gint rtp_session_read_telephone_event(RtpSession *session,
mblk_t *packet,telephone_event_t **tab);
/* high level functions*/
gint rtp_session_send_dtmf(RtpSession *session, gchar dtmf, guint32 userts);
/* 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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