1 /* GStreamer
2  * Copyright (C) 2005 Andy Wingo <wingo@pobox.com>
3  * Copyright (C) 2015 Sebastian Dröge <sebastian@centricular.com>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Library General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 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  * Library General Public License for more details.
14  *
15  * You should have received a copy of the GNU Library General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18  * Boston, MA 02110-1301, USA.
19  */
20 
21 
22 #ifndef __GST_NTP_PACKET_H__
23 #define __GST_NTP_PACKET_H__
24 
25 #include <gst/gst.h>
26 #include <gio/gio.h>
27 
28 G_BEGIN_DECLS
29 
30 /**
31  * GST_NTP_PACKET_SIZE:
32  *
33  * The size of the packets sent between NTP clocks.
34  */
35 #define GST_NTP_PACKET_SIZE 48
36 
37 typedef struct _GstNtpPacket GstNtpPacket;
38 
39 /**
40  * GstNtpPacket:
41  * @origin_time: the time the client packet was sent for the server
42  * @receive_time: the time the client packet was received
43  * @transmit_time: the time the packet was sent
44  * @poll_interval: maximum poll interval
45  *
46  * Content of a #GstNtpPacket.
47  */
48 struct _GstNtpPacket {
49   GstClockTime origin_time;
50   GstClockTime receive_time;
51   GstClockTime transmit_time;
52 
53   GstClockTime poll_interval;
54 };
55 
56 GType gst_ntp_packet_get_type(void) G_GNUC_INTERNAL;
57 
58 enum {
59   GST_NTP_ERROR_WRONG_VERSION,
60   GST_NTP_ERROR_KOD_DENY,
61   GST_NTP_ERROR_KOD_RATE,
62   GST_NTP_ERROR_KOD_UNKNOWN
63 };
64 
65 GQuark gst_ntp_error_quark (void) G_GNUC_INTERNAL;
66 #define GST_NTP_ERROR (gst_ntp_error_quark ())
67 
68 GstNtpPacket*           gst_ntp_packet_new         (const guint8 *buffer,
69                                                     GError      ** error) G_GNUC_INTERNAL;
70 GstNtpPacket*           gst_ntp_packet_copy        (const GstNtpPacket *packet) G_GNUC_INTERNAL;
71 void                    gst_ntp_packet_free        (GstNtpPacket *packet) G_GNUC_INTERNAL;
72 
73 guint8*                 gst_ntp_packet_serialize   (const GstNtpPacket *packet) G_GNUC_INTERNAL;
74 
75 GstNtpPacket*           gst_ntp_packet_receive     (GSocket         * socket,
76                                                     GSocketAddress ** src_address,
77                                                     GError         ** error) G_GNUC_INTERNAL;
78 
79 gboolean                gst_ntp_packet_send        (const GstNtpPacket * packet,
80                                                     GSocket            * socket,
81                                                     GSocketAddress     * dest_address,
82                                                     GError            ** error) G_GNUC_INTERNAL;
83 
84 G_END_DECLS
85 
86 #endif /* __GST_NET_TIME_PACKET_H__ */
87