udp.c File Reference

UDP protocol. More...

#include "avformat.h"
#include "avio_internal.h"
#include "libavutil/avassert.h"
#include "libavutil/parseutils.h"
#include "libavutil/fifo.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "libavutil/log.h"
#include "libavutil/time.h"
#include "internal.h"
#include "network.h"
#include "os_support.h"
#include "url.h"

Classes
struct	UDPContext

Macros
#define	_DEFAULT_SOURCE
#define	_BSD_SOURCE   /* Needed for using struct ip_mreq with recent glibc */
#define	UDPLITE_SEND_CSCOV   10
#define	UDPLITE_RECV_CSCOV   11
#define	IPPROTO_UDPLITE   136
#define	IPV6_ADD_MEMBERSHIP   IPV6_JOIN_GROUP
#define	IPV6_DROP_MEMBERSHIP   IPV6_LEAVE_GROUP
#define	UDP_TX_BUF_SIZE   32768
#define	UDP_MAX_PKT_SIZE   65536
#define	UDP_HEADER_SIZE   8
#define	OFFSET(x)   offsetof(UDPContext, x)
#define	D   AV_OPT_FLAG_DECODING_PARAM
#define	E   AV_OPT_FLAG_ENCODING_PARAM

Typedefs
typedef struct UDPContext	UDPContext

Functions
int	ff_udp_set_remote_url (URLContext *h, const char *uri)
	If no filename is given to av_open_input_file because you want to get the local port first, then you must call this function to set the remote server address. More...
int	ff_udp_get_local_port (URLContext *h)
	Return the local port used by the UDP connection. More...

Variables
const URLProtocol	ff_udp_protocol
const URLProtocol	ff_udplite_protocol

Detailed Description

UDP protocol.

Function Documentation

ff_udp_get_local_port()

int ff_udp_get_local_port

(

URLContext *

h

)

Return the local port used by the UDP connection.

Parameters

h	media file context

Returns

the local port number

ff_udp_set_remote_url()

int ff_udp_set_remote_url	(	URLContext *	h,
		const char *	uri
	)

If no filename is given to av_open_input_file because you want to get the local port first, then you must call this function to set the remote server address.

url syntax: udp://host:port[?option=val...] option: 'ttl=n' : set the ttl value (for multicast only) 'localport=n' : set the local port 'pkt_size=n' : set max packet size 'reuse=1' : enable reusing the socket 'overrun_nonfatal=1': survive in case of circular buffer overrun

Parameters

h	media file context
uri	of the remote server

Returns

zero if no error.

Variable Documentation

ff_udp_protocol

const URLProtocol ff_udp_protocol

Initial value:

= {
    .name                = "udp",
    .url_open            = udp_open,
    .url_read            = udp_read,
    .url_write           = udp_write,
    .url_close           = udp_close,
    .url_get_file_handle = udp_get_file_handle,
    .priv_data_size      = sizeof(UDPContext),
    .priv_data_class     = &udp_class,
    .flags               = URL_PROTOCOL_FLAG_NETWORK,
}

ff_udplite_protocol

const URLProtocol ff_udplite_protocol

Initial value:

= {
    .name                = "udplite",
    .url_open            = udplite_open,
    .url_read            = udp_read,
    .url_write           = udp_write,
    .url_close           = udp_close,
    .url_get_file_handle = udp_get_file_handle,
    .priv_data_size      = sizeof(UDPContext),
    .priv_data_class     = &udplite_context_class,
    .flags               = URL_PROTOCOL_FLAG_NETWORK,
}