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https://gitlab.linphone.org/BC/public/linphone-iphone.git
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2b8200409c
git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@1 3f6dc0c8-ddfe-455d-9043-3cd528dc4637
105 lines
3 KiB
C
105 lines
3 KiB
C
/*
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The oRTP library is an RTP (Realtime Transport Protocol - rfc3550) stack.
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Copyright (C) 2001 Simon MORLAT simon.morlat@linphone.org
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* \file telephonyevents.h
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* \brief Receiving and sending telephone events (RFC2833)
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*
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**/
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#ifndef TELEPHONYEVENTS_H
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#define TELEPHONYEVENTS_H
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#include <ortp/rtpsession.h>
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struct _telephone_event
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{
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#ifdef ORTP_BIGENDIAN
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uint32_t event:8;
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uint32_t E:1;
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uint32_t R:1;
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uint32_t volume:6;
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uint32_t duration:16;
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#else
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uint32_t event:8;
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uint32_t volume:6;
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uint32_t R:1;
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uint32_t E:1;
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uint32_t duration:16;
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#endif
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};
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typedef struct _telephone_event telephone_event_t;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* tell if the session supports telephony events. For this the telephony events payload_type
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must be present in the rtp profile used by the session */
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/* low level functions */
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int rtp_session_telephone_events_supported(RtpSession *session);
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int rtp_session_send_telephone_events_supported(RtpSession *session);
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int rtp_session_recv_telephone_events_supported(RtpSession *session);
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mblk_t *rtp_session_create_telephone_event_packet(RtpSession *session, int start);
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int rtp_session_add_telephone_event(RtpSession *session,
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mblk_t *packet, uint8_t event, int end, uint8_t volume, uint16_t duration);
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int rtp_session_read_telephone_event(RtpSession *session,
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mblk_t *packet,telephone_event_t **tab);
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/* high level functions*/
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int rtp_session_send_dtmf(RtpSession *session, char dtmf, uint32_t userts);
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int rtp_session_send_dtmf2(RtpSession *session, char dtmf, uint32_t userts, int duration);
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/* for high level telephony event callback */
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void rtp_session_check_telephone_events(RtpSession *session, mblk_t *m0);
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#ifdef __cplusplus
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}
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#endif
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/* the size allocated for telephony events packets */
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#define TELEPHONY_EVENTS_ALLOCATED_SIZE (4*sizeof(telephone_event_t))
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/* list of named events */
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#define TEV_DTMF_0 (0)
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#define TEV_DTMF_1 (1)
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#define TEV_DTMF_2 (2)
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#define TEV_DTMF_3 (3)
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#define TEV_DTMF_4 (4)
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#define TEV_DTMF_5 (5)
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#define TEV_DTMF_6 (6)
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#define TEV_DTMF_7 (7)
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#define TEV_DTMF_8 (8)
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#define TEV_DTMF_9 (9)
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#define TEV_DTMF_STAR (10)
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#define TEV_DTMF_POUND (11)
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#define TEV_DTMF_A (12)
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#define TEV_DTMF_B (13)
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#define TEV_DTMF_C (14)
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#define TEV_DTMF_D (15)
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#define TEV_FLASH (16)
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#endif
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