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104 lines
3.8 KiB
C
104 lines
3.8 KiB
C
/*
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Gnome-o-Phone - A program for internet telephony
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Copyright (C) 1999 Roland Dreier
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id$
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*/
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#ifndef _RTP_PACKET_H
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#define _RTP_PACKET_H 1
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#include <glib.h>
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#include <netinet/in.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum {
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RTP_VERSION = 2,
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RTP_HEADER_LEN = 12,
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RTP_MTU = 2048
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};
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typedef struct Rtp_Header *Rtp_Header;
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struct Rtp_Packet_Struct {
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gpointer data;
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guint data_len;
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};
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struct Rtp_Header {
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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unsigned int csrc_count:4; /* CSRC count */
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unsigned int extension:1; /* header extension flag */
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unsigned int padding:1; /* padding flag */
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unsigned int version:2; /* protocol version */
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unsigned int payload_type:7; /* payload type */
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unsigned int marker:1; /* marker bit */
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#elif G_BYTE_ORDER == G_BIG_ENDIAN
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unsigned int version:2; /* protocol version */
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unsigned int padding:1; /* padding flag */
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unsigned int extension:1; /* header extension flag */
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unsigned int csrc_count:4; /* CSRC count */
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unsigned int marker:1; /* marker bit */
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unsigned int payload_type:7; /* payload type */
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#else
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#error "G_BYTE_ORDER should be big or little endian."
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#endif
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guint16 seq; /* sequence number */
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guint32 timestamp; /* timestamp */
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guint32 ssrc; /* synchronization source */
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guint32 csrc[1]; /* optional CSRC list */
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};
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typedef struct Rtp_Packet_Struct *Rtp_Packet;
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Rtp_Packet rtp_packet_new_take_data(gpointer data, guint data_len);
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Rtp_Packet rtp_packet_new_copy_data(gpointer data, guint data_len);
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Rtp_Packet rtp_packet_new_allocate(guint payload_len,
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guint pad_len, guint csrc_count);
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void rtp_packet_free(Rtp_Packet packet);
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Rtp_Packet rtp_packet_read(int fd, struct sockaddr *fromaddr, socklen_t *fromlen);
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void rtp_packet_send(Rtp_Packet packet, int fd, struct sockaddr *toaddr, socklen_t tolen);
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guint8 rtp_packet_get_version(Rtp_Packet packet);
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void rtp_packet_set_version(Rtp_Packet packet, guint8 version);
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guint8 rtp_packet_get_padding(Rtp_Packet packet);
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void rtp_packet_set_padding(Rtp_Packet packet, guint8 padding);
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guint8 rtp_packet_get_csrc_count(Rtp_Packet packet);
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guint8 rtp_packet_get_extension(Rtp_Packet packet);
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void rtp_packet_set_extension(Rtp_Packet packet, guint8 extension);
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void rtp_packet_set_csrc_count(Rtp_Packet packet, guint8 csrc_count);
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guint8 rtp_packet_get_marker(Rtp_Packet packet);
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void rtp_packet_set_marker(Rtp_Packet packet, guint8 marker);
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guint8 rtp_packet_get_payload_type(Rtp_Packet packet);
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void rtp_packet_set_payload_type(Rtp_Packet packet, guint8 payload_type);
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guint16 rtp_packet_get_seq(Rtp_Packet packet);
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void rtp_packet_set_seq(Rtp_Packet packet, guint16 seq);
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guint32 rtp_packet_get_timestamp(Rtp_Packet packet);
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void rtp_packet_set_timestamp(Rtp_Packet packet, guint32 timestamp);
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guint32 rtp_packet_get_ssrc(Rtp_Packet packet);
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void rtp_packet_set_ssrc(Rtp_Packet packet, guint32 ssrc);
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guint rtp_packet_get_payload_len(Rtp_Packet packet);
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gpointer rtp_packet_get_payload(Rtp_Packet packet);
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guint rtp_packet_get_packet_len(Rtp_Packet packet);
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#ifdef __cplusplus
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}
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#endif
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#endif /* rtp-packet.h */
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