/*
* UDP prototype streaming system
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
*/
/**
- * @file udp.c
+ * @file libavformat/udp.c
* UDP protocol
*/
+#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */
#include "avformat.h"
#include <unistd.h>
+#include "internal.h"
#include "network.h"
#include "os_support.h"
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#include <sys/time.h>
#ifndef IPV6_ADD_MEMBERSHIP
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
typedef struct {
int udp_fd;
int ttl;
+ int buffer_size;
int is_multicast;
int local_port;
int reuse_socket;
-#ifndef CONFIG_IPV6
- struct sockaddr_in dest_addr;
-#else
struct sockaddr_storage dest_addr;
-#endif
int dest_addr_len;
} UDPContext;
#define UDP_TX_BUF_SIZE 32768
#define UDP_MAX_PKT_SIZE 65536
-static int udp_set_multicast_ttl(int sockfd, int mcastTTL, struct sockaddr *addr) {
+static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
+ struct sockaddr *addr)
+{
#ifdef IP_MULTICAST_TTL
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
}
}
#endif
-#ifdef CONFIG_IPV6
+#if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS)
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS): %s\n", strerror(errno));
return 0;
}
-static int udp_join_multicast_group(int sockfd, struct sockaddr *addr) {
+static int udp_join_multicast_group(int sockfd, struct sockaddr *addr)
+{
#ifdef IP_ADD_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if HAVE_STRUCT_IPV6_MREQ
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
return 0;
}
-static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr) {
+static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr)
+{
#ifdef IP_DROP_MEMBERSHIP
if (addr->sa_family == AF_INET) {
struct ip_mreq mreq;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if HAVE_STRUCT_IPV6_MREQ
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
return 0;
}
-#ifdef CONFIG_IPV6
-static struct addrinfo* udp_ipv6_resolve_host(const char *hostname, int port, int type, int family, int flags) {
+static struct addrinfo* udp_resolve_host(const char *hostname, int port,
+ int type, int family, int flags)
+{
struct addrinfo hints, *res = 0;
int error;
char sport[16];
hints.ai_family = family;
hints.ai_flags = flags;
if ((error = getaddrinfo(node, service, &hints, &res))) {
- av_log(NULL, AV_LOG_ERROR, "udp_ipv6_resolve_host: %s\n", gai_strerror(error));
+ res = NULL;
+ av_log(NULL, AV_LOG_ERROR, "udp_resolve_host: %s\n", gai_strerror(error));
}
return res;
}
-static int udp_set_url(struct sockaddr_storage *addr, const char *hostname, int port) {
+static int udp_set_url(struct sockaddr_storage *addr,
+ const char *hostname, int port)
+{
struct addrinfo *res0;
int addr_len;
- res0 = udp_ipv6_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
+ res0 = udp_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
if (res0 == 0) return AVERROR(EIO);
memcpy(addr, res0->ai_addr, res0->ai_addrlen);
addr_len = res0->ai_addrlen;
if (addr->ss_family == AF_INET) {
return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
}
+#if HAVE_STRUCT_SOCKADDR_IN6
if (addr->ss_family == AF_INET6) {
return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
}
+#endif
return 0;
}
-static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr, int *addr_len)
+static int udp_socket_create(UDPContext *s,
+ struct sockaddr_storage *addr, int *addr_len)
{
int udp_fd = -1;
struct addrinfo *res0 = NULL, *res = NULL;
if (((struct sockaddr *) &s->dest_addr)->sa_family)
family = ((struct sockaddr *) &s->dest_addr)->sa_family;
- res0 = udp_ipv6_resolve_host(0, s->local_port, SOCK_DGRAM, family, AI_PASSIVE);
+ res0 = udp_resolve_host(0, s->local_port, SOCK_DGRAM, family, AI_PASSIVE);
if (res0 == 0)
goto fail;
for (res = res0; res; res=res->ai_next) {
return strtol(sbuf, NULL, 10);
}
-#else
-
-static int udp_set_url(struct sockaddr_in *addr, const char *hostname, int port)
-{
- /* set the destination address */
- if (resolve_host(&addr->sin_addr, hostname) < 0)
- return AVERROR(EIO);
- addr->sin_family = AF_INET;
- addr->sin_port = htons(port);
-
- return sizeof(struct sockaddr_in);
-}
-
-static int is_multicast_address(struct sockaddr_in *addr)
-{
- return IN_MULTICAST(ntohl(addr->sin_addr.s_addr));
-}
-
-static int udp_socket_create(UDPContext *s, struct sockaddr_in *addr, int *addr_len)
-{
- int fd;
-
- fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd < 0)
- return -1;
-
- addr->sin_family = AF_INET;
- addr->sin_addr.s_addr = htonl (INADDR_ANY);
- addr->sin_port = htons(s->local_port);
- *addr_len = sizeof(struct sockaddr_in);
-
- return fd;
-}
-
-static int udp_port(struct sockaddr_in *addr, int len)
-{
- return ntohs(addr->sin_port);
-}
-#endif /* CONFIG_IPV6 */
-
/**
* If no filename is given to av_open_input_file because you want to
char hostname[256];
int port;
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ ff_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* set the destination address */
s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
* streams at the same time.
* @param h media file context
*/
+#if (LIBAVFORMAT_VERSION_MAJOR >= 53)
+static
+#endif
int udp_get_file_handle(URLContext *h)
{
UDPContext *s = h->priv_data;
static int udp_open(URLContext *h, const char *uri, int flags)
{
char hostname[1024];
- int port, udp_fd = -1, tmp;
+ int port, udp_fd = -1, tmp, bind_ret = -1;
UDPContext *s = NULL;
int is_output;
const char *p;
char buf[256];
-#ifndef CONFIG_IPV6
- struct sockaddr_in my_addr;
-#else
struct sockaddr_storage my_addr;
-#endif
int len;
h->is_streamed = 1;
is_output = (flags & URL_WRONLY);
- if(!ff_network_init())
- return AVERROR(EIO);
-
s = av_mallocz(sizeof(UDPContext));
if (!s)
return AVERROR(ENOMEM);
h->priv_data = s;
s->ttl = 16;
+ s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
+
p = strchr(uri, '?');
if (p) {
s->reuse_socket = find_info_tag(buf, sizeof(buf), "reuse", p);
if (find_info_tag(buf, sizeof(buf), "pkt_size", p)) {
h->max_packet_size = strtol(buf, NULL, 10);
}
+ if (find_info_tag(buf, sizeof(buf), "buffer_size", p)) {
+ s->buffer_size = strtol(buf, NULL, 10);
+ }
}
/* fill the dest addr */
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ ff_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
- /* XXX: fix url_split */
+ /* XXX: fix ff_url_split */
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */
if (flags & URL_WRONLY)
goto fail;
/* the bind is needed to give a port to the socket now */
- if (bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
+ /* if multicast, try the multicast address bind first */
+ if (s->is_multicast && !(h->flags & URL_WRONLY)) {
+ bind_ret = bind(udp_fd,(struct sockaddr *)&s->dest_addr, len);
+ }
+ /* bind to the local address if not multicast or if the multicast
+ * bind failed */
+ if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0)
goto fail;
len = sizeof(my_addr);
if (is_output) {
/* limit the tx buf size to limit latency */
- tmp = UDP_TX_BUF_SIZE;
+ tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) {
av_log(NULL, AV_LOG_ERROR, "setsockopt(SO_SNDBUF): %s\n", strerror(errno));
goto fail;
} else {
/* set udp recv buffer size to the largest possible udp packet size to
* avoid losing data on OSes that set this too low by default. */
- tmp = UDP_MAX_PKT_SIZE;
- setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp));
+ tmp = s->buffer_size;
+ if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) {
+ av_log(NULL, AV_LOG_WARNING, "setsockopt(SO_RECVBUF): %s\n", strerror(errno));
+ }
+ /* make the socket non-blocking */
+ ff_socket_nonblock(udp_fd, 1);
}
s->udp_fd = udp_fd;
{
UDPContext *s = h->priv_data;
int len;
+ fd_set rfds;
+ int ret;
+ struct timeval tv;
for(;;) {
+ if (url_interrupt_cb())
+ return AVERROR(EINTR);
+ FD_ZERO(&rfds);
+ FD_SET(s->udp_fd, &rfds);
+ tv.tv_sec = 0;
+ tv.tv_usec = 100 * 1000;
+ ret = select(s->udp_fd + 1, &rfds, NULL, NULL, &tv);
+ if (ret < 0)
+ return AVERROR(EIO);
+ if (!(ret > 0 && FD_ISSET(s->udp_fd, &rfds)))
+ continue;
len = recv(s->udp_fd, buf, size, 0);
if (len < 0) {
if (ff_neterrno() != FF_NETERROR(EAGAIN) &&
if (s->is_multicast && !(h->flags & URL_WRONLY))
udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr);
closesocket(s->udp_fd);
- ff_network_close();
av_free(s);
return 0;
}
udp_write,
NULL, /* seek */
udp_close,
+ .url_get_file_handle = udp_get_file_handle,
};
projects / ffmpeg / blobdiff