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2b8200409c
git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@1 3f6dc0c8-ddfe-455d-9043-3cd528dc4637
115 lines
3.8 KiB
C
115 lines
3.8 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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#ifndef RTP_H
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#define RTP_H
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#include <ortp/port.h>
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#include <ortp/str_utils.h>
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#define IPMAXLEN 20
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#define UDP_MAX_SIZE 1500
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#define RTP_FIXED_HEADER_SIZE 12
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#define RTP_DEFAULT_JITTER_TIME 80 /*miliseconds*/
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#define RTP_DEFAULT_MULTICAST_TTL 5 /*hops*/
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#define RTP_DEFAULT_MULTICAST_LOOPBACK 0 /*false*/
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#define RTP_DEFAULT_DSCP 0x00 /*best effort*/
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typedef struct rtp_header
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{
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#ifdef ORTP_BIGENDIAN
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uint16_t version:2;
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uint16_t padbit:1;
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uint16_t extbit:1;
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uint16_t cc:4;
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uint16_t markbit:1;
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uint16_t paytype:7;
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#else
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uint16_t cc:4;
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uint16_t extbit:1;
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uint16_t padbit:1;
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uint16_t version:2;
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uint16_t paytype:7;
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uint16_t markbit:1;
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#endif
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uint16_t seq_number;
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uint32_t timestamp;
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uint32_t ssrc;
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uint32_t csrc[16];
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} rtp_header_t;
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typedef struct rtp_stats
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{
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uint64_t packet_sent;
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uint64_t sent; /* bytes sent */
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uint64_t recv; /* bytes of payload received and delivered in time to the application */
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uint64_t hw_recv; /* bytes of payload received */
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uint64_t packet_recv; /* number of packets received */
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uint64_t unavaillable; /* packets not availlable when they were queried */
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uint64_t outoftime; /* number of packets that were received too late */
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uint64_t cum_packet_loss; /* cumulative number of packet lost */
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uint64_t bad; /* packets that did not appear to be RTP */
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uint64_t discarded; /* incoming packets discarded because the queue exceeds its max size */
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} rtp_stats_t;
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#define RTP_TIMESTAMP_IS_NEWER_THAN(ts1,ts2) \
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((uint32_t)((uint32_t)(ts1) - (uint32_t)(ts2))< (uint32_t)(1<<31))
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#define RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(ts1,ts2) \
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( ((uint32_t)((uint32_t)(ts1) - (uint32_t)(ts2))< (uint32_t)(1<<31)) && (ts1)!=(ts2) )
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#define TIME_IS_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_NEWER_THAN(t1,t2)
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#define TIME_IS_STRICTLY_NEWER_THAN(t1,t2) RTP_TIMESTAMP_IS_STRICTLY_NEWER_THAN(t1,t2)
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#ifdef __cplusplus
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extern "C"{
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#endif
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/* packet api */
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/* the first argument is a mblk_t. The header is supposed to be not splitted */
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#define rtp_set_markbit(mp,value) ((rtp_header_t*)((mp)->b_rptr))->markbit=(value)
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#define rtp_set_seqnumber(mp,seq) ((rtp_header_t*)((mp)->b_rptr))->seq_number=(seq)
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#define rtp_set_timestamp(mp,ts) ((rtp_header_t*)((mp)->b_rptr))->timestamp=(ts)
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#define rtp_set_ssrc(mp,_ssrc) ((rtp_header_t*)((mp)->b_rptr))->ssrc=(_ssrc)
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void rtp_add_csrc(mblk_t *mp ,uint32_t csrc);
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#define rtp_set_payload_type(mp,pt) ((rtp_header_t*)((mp)->b_rptr))->paytype=(pt)
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#define rtp_get_markbit(mp) (((rtp_header_t*)((mp)->b_rptr))->markbit)
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#define rtp_get_timestamp(mp) (((rtp_header_t*)((mp)->b_rptr))->timestamp)
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#define rtp_get_seqnumber(mp) (((rtp_header_t*)((mp)->b_rptr))->seq_number)
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#define rtp_get_payload_type(mp) (((rtp_header_t*)((mp)->b_rptr))->paytype)
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#define rtp_get_ssrc(mp) (((rtp_header_t*)((mp)->b_rptr))->ssrc)
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#define rtp_get_cc(mp) (((rtp_header_t*)((mp)->b_rptr))->cc)
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#define rtp_get_csrc(mp, idx) (((rtp_header_t*)((mp)->b_rptr))->csrc[idx])
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int rtp_get_payload(mblk_t *packet, unsigned char **start);
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#ifdef __cplusplus
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}
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#endif
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#endif
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