rtpproto.c File Reference

RTP protocol. More...

#include "libavutil/parseutils.h"
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avformat.h"
#include "avio_internal.h"
#include "rtp.h"
#include "rtpproto.h"
#include "url.h"
#include "ip.h"
#include <stdarg.h>
#include "internal.h"
#include "network.h"
#include "os_support.h"
#include <fcntl.h>

Go to the source code of this file.

Data Structures
struct	RTPContext

Macros
#define	OFFSET(x)   offsetof(RTPContext, x)
#define	D   AV_OPT_FLAG_DECODING_PARAM
#define	E   AV_OPT_FLAG_ENCODING_PARAM

Functions
int	ff_rtp_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...
static int	get_port (const struct sockaddr_storage *ss)
static void	set_port (struct sockaddr_storage *ss, int port)
static	av_printf_format (3, 4)
	add option to url of the form: "http://host:port/path?option1=val1&option2=val2... More...
static void	build_udp_url (RTPContext *s, char *buf, int buf_size, const char *hostname, int port, int local_port, const char *include_sources, const char *exclude_sources)
static int	rtp_open (URLContext *h, const char *uri, int flags)
	url syntax: rtp://host:port[?option=val...] option: 'ttl=n' : set the ttl value (for multicast only) 'rtcpport=n' : set the remote rtcp port to n 'localrtpport=n' : set the local rtp port to n 'localrtcpport=n' : set the local rtcp port to n 'pkt_size=n' : set max packet size 'connect=0/1' : do a connect() on the UDP socket 'sources=ip[,ip]' : list allowed source IP addresses 'block=ip[,ip]' : list disallowed source IP addresses 'write_to_source=0/1' : send packets to the source address of the latest received packet 'dscp=n' : set DSCP value to n (QoS) deprecated option: 'localport=n' : set the local port to n More...
static int	rtp_read (URLContext *h, uint8_t *buf, int size)
static int	rtp_write (URLContext *h, const uint8_t *buf, int size)
static int	rtp_close (URLContext *h)
int	ff_rtp_get_local_rtp_port (URLContext *h)
	Return the local rtp port used by the RTP connection. More...
static int	rtp_get_file_handle (URLContext *h)
	Return the local rtcp port used by the RTP connection. More...
static int	rtp_get_multi_file_handle (URLContext *h, int **handles, int *numhandles)

Variables
static const AVOption	options []
static const AVClass	rtp_class
const URLProtocol	ff_rtp_protocol

Detailed Description

RTP protocol.

Definition in file rtpproto.c.

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(RTPContext, x)

Definition at line 65 of file rtpproto.c.

#define D   AV_OPT_FLAG_DECODING_PARAM

Definition at line 66 of file rtpproto.c.

#define E   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 67 of file rtpproto.c.

Function Documentation

int ff_rtp_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.

Parameters

h	media file context
uri	of the remote server

Returns

zero if no error.

Definition at line 101 of file rtpproto.c.

static int get_port ( const struct sockaddr_storage *  ss )

static

Definition at line 130 of file rtpproto.c.

Referenced by rtp_write().

static void set_port ( struct sockaddr_storage *  ss, int  port  )

static

Definition at line 141 of file rtpproto.c.

Referenced by rtp_write().

static av_printf_format ( 3  , 4    )

static

add option to url of the form: "http://host:port/path?option1=val1&option2=val2...

Definition at line 156 of file rtpproto.c.

static void build_udp_url ( RTPContext *  s, char *  buf, int  buf_size, const char *  hostname, int  port, int  local_port, const char *  include_sources, const char *  exclude_sources  )

static

Definition at line 171 of file rtpproto.c.

Referenced by rtp_open().

static int rtp_open ( URLContext *  h, const char *  uri, int  flags  )

static

url syntax: rtp://host:port[?option=val...] option: 'ttl=n' : set the ttl value (for multicast only) 'rtcpport=n' : set the remote rtcp port to n 'localrtpport=n' : set the local rtp port to n 'localrtcpport=n' : set the local rtcp port to n 'pkt_size=n' : set max packet size 'connect=0/1' : do a connect() on the UDP socket 'sources=ip[,ip]' : list allowed source IP addresses 'block=ip[,ip]' : list disallowed source IP addresses 'write_to_source=0/1' : send packets to the source address of the latest received packet 'dscp=n' : set DSCP value to n (QoS) deprecated option: 'localport=n' : set the local port to n

if rtcpport isn't set the rtcp port will be the rtp port + 1 if local rtp port isn't set any available port will be used for the local rtp and rtcp ports if the local rtcp port is not set it will be the local rtp port + 1

Definition at line 219 of file rtpproto.c.

static int rtp_read ( URLContext *  h, uint8_t *  buf, int  size  )

static

Definition at line 376 of file rtpproto.c.

static int rtp_write ( URLContext *  h, const uint8_t *  buf, int  size  )

static

Definition at line 417 of file rtpproto.c.

static int rtp_close ( URLContext *  h )

static

Definition at line 503 of file rtpproto.c.

int ff_rtp_get_local_rtp_port

(

URLContext *

h

)

Return the local rtp port used by the RTP connection.

Parameters

h	media file context

Returns

the local port number

Definition at line 521 of file rtpproto.c.

Referenced by rtsp_read_setup().

static int rtp_get_file_handle ( URLContext *  h )

static

Return the local rtcp port used by the RTP connection.

Parameters

h	media file context

Returns

the local port number

Definition at line 533 of file rtpproto.c.

static int rtp_get_multi_file_handle ( URLContext *  h, int **  handles, int *  numhandles  )

static

Definition at line 539 of file rtpproto.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "ttl",                "Time to live (in milliseconds, multicast only)",                   OFFSET(ttl),             AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "buffer_size",        "Send/Receive buffer size (in bytes)",                              OFFSET(buffer_size),     AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "rtcp_port",          "Custom rtcp port",                                                 OFFSET(rtcp_port),       AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "local_rtpport",      "Local rtp port",                                                   OFFSET(local_rtpport),   AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "local_rtcpport",     "Local rtcp port",                                                  OFFSET(local_rtcpport),  AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "connect",            "Connect socket",                                                   OFFSET(connect),         AV_OPT_TYPE_BOOL,   { .i64 =  0 },     0, 1,       .flags = D|E },
    { "write_to_source",    "Send packets to the source address of the latest received packet", OFFSET(write_to_source), AV_OPT_TYPE_BOOL,   { .i64 =  0 },     0, 1,       .flags = D|E },
    { "pkt_size",           "Maximum packet size",                                              OFFSET(pkt_size),        AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "dscp",               "DSCP class",                                                       OFFSET(dscp),            AV_OPT_TYPE_INT,    { .i64 = -1 },    -1, INT_MAX, .flags = D|E },
    { "sources",            "Source list",                                                      OFFSET(sources),         AV_OPT_TYPE_STRING, { .str = NULL },               .flags = D|E },
    { "block",              "Block list",                                                       OFFSET(block),           AV_OPT_TYPE_STRING, { .str = NULL },               .flags = D|E },
    { "fec",                "FEC",                                                              OFFSET(fec_options_str), AV_OPT_TYPE_STRING, { .str = NULL },               .flags = E },
    { NULL }
}

Definition at line 68 of file rtpproto.c.

const AVClass rtp_class

static

Initial value:

= {
    .class_name = "rtp",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 84 of file rtpproto.c.

const URLProtocol ff_rtp_protocol

Initial value:

= {
    .name                      = "rtp",
    .url_open                  = rtp_open,
    .url_read                  = rtp_read,
    .url_write                 = rtp_write,
    .url_close                 = rtp_close,
    .url_get_file_handle       = rtp_get_file_handle,
    .url_get_multi_file_handle = rtp_get_multi_file_handle,
    .priv_data_size            = sizeof(RTPContext),
    .flags                     = URL_PROTOCOL_FLAG_NETWORK,
    .priv_data_class           = &rtp_class,
}

Definition at line 552 of file rtpproto.c.