/*
* UDP prototype streaming system
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+
+/**
+ * @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 "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
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#endif
+#ifndef IN_MULTICAST
+#define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
+#endif
+#ifndef IN6_IS_ADDR_MULTICAST
+#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
+#endif
typedef struct {
int udp_fd;
int ttl;
+ int buffer_size;
int is_multicast;
int local_port;
int reuse_socket;
-#ifndef CONFIG_IPV6
+#if !CONFIG_IPV6
struct sockaddr_in dest_addr;
#else
struct sockaddr_storage dest_addr;
#endif
- size_t dest_addr_len;
+ int dest_addr_len;
} UDPContext;
#define UDP_TX_BUF_SIZE 32768
#ifdef IP_MULTICAST_TTL
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) {
- perror("setsockopt(IP_MULTICAST_TTL)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL): %s\n", strerror(errno));
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) {
- perror("setsockopt(IPV6_MULTICAST_HOPS)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS): %s\n", strerror(errno));
return -1;
}
}
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
mreq.imr_interface.s_addr= INADDR_ANY;
if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
- perror("setsockopt(IP_ADD_MEMBERSHIP)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP): %s\n", strerror(errno));
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
mreq6.ipv6mr_interface= 0;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_ADD_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- perror("setsockopt(IPV6_ADD_MEMBERSHIP)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP): %s\n", strerror(errno));
return -1;
}
}
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
mreq.imr_interface.s_addr= INADDR_ANY;
if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) {
- perror("setsockopt(IP_DROP_MEMBERSHIP)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP): %s\n", strerror(errno));
return -1;
}
}
#endif
-#ifdef CONFIG_IPV6
+#if CONFIG_IPV6
if (addr->sa_family == AF_INET6) {
struct ipv6_mreq mreq6;
memcpy(&mreq6.ipv6mr_multiaddr, &(((struct sockaddr_in6 *)addr)->sin6_addr), sizeof(struct in6_addr));
mreq6.ipv6mr_interface= 0;
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_DROP_MEMBERSHIP, &mreq6, sizeof(mreq6)) < 0) {
- perror("setsockopt(IPV6_DROP_MEMBERSHIP)");
+ av_log(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP): %s\n", strerror(errno));
return -1;
}
}
return 0;
}
-#ifdef CONFIG_IPV6
+#if CONFIG_IPV6
static struct addrinfo* udp_ipv6_resolve_host(const char *hostname, int port, int type, int family, int flags) {
struct addrinfo hints, *res = 0;
int error;
return res;
}
-static int udp_ipv6_set_remote_url(URLContext *h, const char *uri) {
- UDPContext *s = h->priv_data;
- char hostname[256];
- int port;
+static int udp_set_url(struct sockaddr_storage *addr, const char *hostname, int port) {
struct addrinfo *res0;
- url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
+ int addr_len;
+
res0 = udp_ipv6_resolve_host(hostname, port, SOCK_DGRAM, AF_UNSPEC, 0);
if (res0 == 0) return AVERROR(EIO);
- memcpy(&s->dest_addr, res0->ai_addr, res0->ai_addrlen);
- s->dest_addr_len = res0->ai_addrlen;
+ memcpy(addr, res0->ai_addr, res0->ai_addrlen);
+ addr_len = res0->ai_addrlen;
freeaddrinfo(res0);
+
+ return addr_len;
+}
+
+static int is_multicast_address(struct sockaddr_storage *addr)
+{
+ if (addr->ss_family == AF_INET) {
+ return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
+ }
+ if (addr->ss_family == AF_INET6) {
+ return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
+ }
+
return 0;
}
-static int udp_ipv6_set_local(URLContext *h) {
- UDPContext *s = h->priv_data;
+static int udp_socket_create(UDPContext *s, struct sockaddr_storage *addr, int *addr_len)
+{
int udp_fd = -1;
- struct sockaddr_storage clientaddr;
- socklen_t addrlen;
- char sbuf[NI_MAXSERV];
- char hbuf[NI_MAXHOST];
struct addrinfo *res0 = NULL, *res = NULL;
int family = AF_UNSPEC;
for (res = res0; res; res=res->ai_next) {
udp_fd = socket(res->ai_family, SOCK_DGRAM, 0);
if (udp_fd > 0) break;
- perror("socket");
+ av_log(NULL, AV_LOG_ERROR, "socket: %s\n", strerror(errno));
}
if (udp_fd < 0)
goto fail;
- if (bind(udp_fd, res0->ai_addr, res0->ai_addrlen) < 0) {
- perror("bind");
- goto fail;
- }
- freeaddrinfo(res0);
- res0 = NULL;
-
- addrlen = sizeof(clientaddr);
- if (getsockname(udp_fd, (struct sockaddr *)&clientaddr, &addrlen) < 0) {
- perror("getsockname");
- goto fail;
- }
-
- if (getnameinfo((struct sockaddr *)&clientaddr, addrlen, hbuf, sizeof(hbuf), sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV) != 0) {
- perror("getnameinfo");
- goto fail;
- }
+ memcpy(addr, res->ai_addr, res->ai_addrlen);
+ *addr_len = res->ai_addrlen;
- s->local_port = strtol(sbuf, NULL, 10);
+ freeaddrinfo(res0);
return udp_fd;
return -1;
}
+static int udp_port(struct sockaddr_storage *addr, int addr_len)
+{
+ char sbuf[sizeof(int)*3+1];
+
+ if (getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0, sbuf, sizeof(sbuf), NI_NUMERICSERV) != 0) {
+ av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", strerror(errno));
+ return -1;
+ }
+
+ 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 */
* the remote server address.
*
* url syntax: udp://host:port[?option=val...]
- * option: 'multicast=1' : enable multicast
- * 'ttl=n' : set the ttl value (for multicast only)
+ * 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
*/
int udp_set_remote_url(URLContext *h, const char *uri)
{
-#ifdef CONFIG_IPV6
- return udp_ipv6_set_remote_url(h, uri);
-#else
UDPContext *s = h->priv_data;
char hostname[256];
int port;
url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri);
/* set the destination address */
- if (resolve_host(&s->dest_addr.sin_addr, hostname) < 0)
+ s->dest_addr_len = udp_set_url(&s->dest_addr, hostname, port);
+ if (s->dest_addr_len < 0) {
return AVERROR(EIO);
- s->dest_addr.sin_family = AF_INET;
- s->dest_addr.sin_port = htons(port);
- s->dest_addr_len = sizeof(s->dest_addr);
+ }
+ s->is_multicast = is_multicast_address(&s->dest_addr);
+
return 0;
-#endif
}
/**
* 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, my_addr1;
- int len;
+#if !CONFIG_IPV6
+ struct sockaddr_in my_addr;
+#else
+ struct sockaddr_storage my_addr;
#endif
+ int len;
h->is_streamed = 1;
h->max_packet_size = 1472;
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->is_multicast = 0;
- s->local_port = 0;
- s->reuse_socket = 0;
+ s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE;
+
p = strchr(uri, '?');
if (p) {
- s->is_multicast = find_info_tag(buf, sizeof(buf), "multicast", p);
s->reuse_socket = find_info_tag(buf, sizeof(buf), "reuse", p);
if (find_info_tag(buf, sizeof(buf), "ttl", p)) {
s->ttl = strtol(buf, NULL, 10);
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 */
/* XXX: fix url_split */
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */
- if (s->is_multicast || (flags & URL_WRONLY))
+ if (flags & URL_WRONLY)
goto fail;
} else {
udp_set_remote_url(h, uri);
}
- if(!ff_network_init())
- return AVERROR(EIO);
-
-#ifndef CONFIG_IPV6
- udp_fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (s->is_multicast && !(h->flags & URL_WRONLY))
+ s->local_port = port;
+ udp_fd = udp_socket_create(s, &my_addr, &len);
if (udp_fd < 0)
goto fail;
- my_addr.sin_family = AF_INET;
- my_addr.sin_addr.s_addr = htonl (INADDR_ANY);
- if (s->is_multicast && !(h->flags & URL_WRONLY)) {
- /* special case: the bind must be done on the multicast address port */
- my_addr.sin_port = s->dest_addr.sin_port;
- } else {
- my_addr.sin_port = htons(s->local_port);
- }
-
if (s->reuse_socket)
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
goto fail;
/* the bind is needed to give a port to the socket now */
- if (bind(udp_fd,(struct sockaddr *)&my_addr, sizeof(my_addr)) < 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_addr1);
- getsockname(udp_fd, (struct sockaddr *)&my_addr1, &len);
- s->local_port = ntohs(my_addr1.sin_port);
-#else
- if (s->is_multicast && !(h->flags & URL_WRONLY))
- s->local_port = port;
- udp_fd = udp_ipv6_set_local(h);
- if (udp_fd < 0)
- goto fail;
-#endif /* CONFIG_IPV6 */
+ len = sizeof(my_addr);
+ getsockname(udp_fd, (struct sockaddr *)&my_addr, &len);
+ s->local_port = udp_port(&my_addr, len);
+
if (s->is_multicast) {
if (h->flags & URL_WRONLY) {
/* output */
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) {
- perror("setsockopt sndbuf");
+ 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;
static int udp_read(URLContext *h, uint8_t *buf, int size)
{
UDPContext *s = h->priv_data;
-#ifndef CONFIG_IPV6
- struct sockaddr_in from;
-#else
- struct sockaddr_storage from;
-#endif
- socklen_t from_len;
int len;
+ fd_set rfds;
+ int ret;
+ struct timeval tv;
for(;;) {
- from_len = sizeof(from);
- len = recvfrom (s->udp_fd, buf, size, 0,
- (struct sockaddr *)&from, &from_len);
+ 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) &&
ff_neterrno() != FF_NETERROR(EINTR))
udp_write,
NULL, /* seek */
udp_close,
+ .url_get_file_handle = udp_get_file_handle,
};
projects / frescor / ffmpeg.git / blobdiff