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GStreamer 0.10 Library Reference Manual | |
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GstNetTimePacketGstNetTimePacket — Helper structure to construct clock packets used by network clocks. |
#include <gst/net/gstnet.h>
GstNetTimePacket;
#define GST_NET_TIME_PACKET_SIZE
GstNetTimePacket* gst_net_time_packet_new (const guint8 *buffer);
GstNetTimePacket* gst_net_time_packet_receive (gint fd,
struct sockaddr *addr,
socklen_t *len);
gint gst_net_time_packet_send (const GstNetTimePacket *packet,
gint fd,
struct sockaddr *addr,
socklen_t len);
guint8* gst_net_time_packet_serialize (const GstNetTimePacket *packet);
Various functions for receiving, sending an serializing GstNetTimePacket structures.
Last reviewed on 2005-11-23 (0.9.5)
typedef struct {
GstClockTime local_time;
GstClockTime remote_time;
} GstNetTimePacket;
Content of a GstNetTimePacket.
GstClockTime local_time; |
the local time when this packet was sent |
GstClockTime remote_time; |
the remote time observation |
#define GST_NET_TIME_PACKET_SIZE 16
The size of the packets sent between network clocks.
GstNetTimePacket* gst_net_time_packet_new (const guint8 *buffer);
Creates a new GstNetTimePacket from a buffer received over the network. The
caller is responsible for ensuring that buffer is at least
GST_NET_TIME_PACKET_SIZE bytes long.
If buffer is NULL, the local and remote times will be set to
GST_CLOCK_TIME_NONE.
MT safe. Caller owns return value (g_free to free).
buffer : |
a buffer from which to construct the packet, or NULL |
| Returns : | The new GstNetTimePacket. |
GstNetTimePacket* gst_net_time_packet_receive (gint fd, struct sockaddr *addr, socklen_t *len);
Receives a GstNetTimePacket over a socket. Handles interrupted system calls,
but otherwise returns NULL on error. See recvfrom(2) for more information on
how to interpret sockaddr.
MT safe. Caller owns return value (g_free to free).
fd : |
a file descriptor created by socket(2) |
addr : |
a pointer to a sockaddr to hold the address of the sender |
len : |
a pointer to the size of the data pointed to by addr
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| Returns : | The new GstNetTimePacket. |
gint gst_net_time_packet_send (const GstNetTimePacket *packet, gint fd, struct sockaddr *addr, socklen_t len);
Sends a GstNetTimePacket over a socket. Essentially a thin wrapper around
sendto(2) and gst_net_time_packet_serialize().
MT safe.
packet : |
the GstNetTimePacket |
fd : |
a file descriptor created by socket(2) |
addr : |
a pointer to a sockaddr to hold the address of the sender |
len : |
the size of the data pointed to by addr
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| Returns : | The return value of sendto(2). |
guint8* gst_net_time_packet_serialize (const GstNetTimePacket *packet);
Serialized a GstNetTimePacket into a newly-allocated sequence of GST_NET_TIME_PACKET_SIZE bytes, in network byte order. The value returned is suitable for passing to write(2) or sendto(2) for communication over the network.
MT safe. Caller owns return value (g_free to free).
packet : |
the GstNetTimePacket |
| Returns : | A newly allocated sequence of GST_NET_TIME_PACKET_SIZE bytes. |