de6d9b64 |
/*
* UDP prototype streaming system |
406792e7 |
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
de6d9b64 |
* |
b78e7197 |
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
19720f15 |
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
b78e7197 |
* version 2.1 of the License, or (at your option) any later version. |
de6d9b64 |
* |
b78e7197 |
* FFmpeg is distributed in the hope that it will be useful, |
de6d9b64 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
19720f15 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details. |
de6d9b64 |
* |
19720f15 |
* You should have received a copy of the GNU Lesser General Public |
b78e7197 |
* License along with FFmpeg; if not, write to the Free Software |
5509bffa |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
de6d9b64 |
*/ |
3adfb377 |
/** |
ba87f080 |
* @file |
3adfb377 |
* UDP protocol
*/
|
26e8895b |
#define _DEFAULT_SOURCE |
a9e02947 |
#define _BSD_SOURCE /* Needed for using struct ip_mreq with recent glibc */ |
046f081b |
|
8be1c656 |
#include "avformat.h" |
4ec153bb |
#include "avio_internal.h" |
9b7a8bdd |
#include "libavutil/avassert.h" |
ab0287fc |
#include "libavutil/parseutils.h" |
03f8f397 |
#include "libavutil/fifo.h" |
20f0bf8c |
#include "libavutil/intreadwrite.h" |
65ac5137 |
#include "libavutil/avstring.h" |
aefed6ca |
#include "libavutil/opt.h"
#include "libavutil/log.h" |
9cf788ec |
#include "libavutil/time.h" |
e4a9e3cc |
#include "internal.h" |
42572ef5 |
#include "network.h" |
087b3272 |
#include "os_support.h" |
5cec8971 |
#include "url.h" |
124a9edb |
|
3c821a1a |
#ifdef __APPLE__
#include "TargetConditionals.h"
#endif
|
07c3a4f6 |
#if HAVE_UDPLITE_H
#include "udplite.h"
#else
/* On many Linux systems, udplite.h is missing but the kernel supports UDP-Lite.
* So, we provide a fallback here.
*/
#define UDPLITE_SEND_CSCOV 10
#define UDPLITE_RECV_CSCOV 11
#endif
#ifndef IPPROTO_UDPLITE
#define IPPROTO_UDPLITE 136
#endif
|
281bde27 |
#if HAVE_PTHREAD_CANCEL |
42756021 |
#include <pthread.h> |
124a9edb |
#endif
|
9c633e9a |
#ifndef IPV6_ADD_MEMBERSHIP
#define IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
#endif
|
20f0bf8c |
#define UDP_TX_BUF_SIZE 32768
#define UDP_MAX_PKT_SIZE 65536 |
07c3a4f6 |
#define UDP_HEADER_SIZE 8 |
20f0bf8c |
|
daf8cf35 |
typedef struct UDPContext { |
aefed6ca |
const AVClass *class; |
2d225591 |
int udp_fd;
int ttl; |
07c3a4f6 |
int udplite_coverage; |
236bb1ab |
int buffer_size; |
66028b7b |
int pkt_size; |
2d225591 |
int is_multicast; |
f1c16749 |
int is_broadcast; |
2d225591 |
int local_port; |
34ecc397 |
int reuse_socket; |
3069e70f |
int overrun_nonfatal; |
7a91333f |
struct sockaddr_storage dest_addr; |
397db8ac |
int dest_addr_len; |
6766a354 |
int is_connected; |
42756021 |
/* Circular Buffer variables for use in UDP receive code */
int circular_buffer_size; |
03f8f397 |
AVFifoBuffer *fifo; |
42756021 |
int circular_buffer_error; |
cc16229d |
int64_t bitrate; /* number of bits to send per second */
int64_t burst_bits; |
9b7a8bdd |
int close_req; |
281bde27 |
#if HAVE_PTHREAD_CANCEL |
42756021 |
pthread_t circular_buffer_thread; |
bc900501 |
pthread_mutex_t mutex;
pthread_cond_t cond; |
45c39e56 |
int thread_started; |
124a9edb |
#endif |
20f0bf8c |
uint8_t tmp[UDP_MAX_PKT_SIZE+4];
int remaining_in_dg; |
66028b7b |
char *localaddr; |
aefed6ca |
int timeout; |
5fe415f0 |
struct sockaddr_storage local_addr_storage; |
66028b7b |
char *sources;
char *block; |
de6d9b64 |
} UDPContext;
|
aefed6ca |
#define OFFSET(x) offsetof(UDPContext, x)
#define D AV_OPT_FLAG_DECODING_PARAM
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = { |
66028b7b |
{ "buffer_size", "System data size (in bytes)", OFFSET(buffer_size), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E }, |
cc16229d |
{ "bitrate", "Bits to send per second", OFFSET(bitrate), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, .flags = E },
{ "burst_bits", "Max length of bursts in bits (when using bitrate)", OFFSET(burst_bits), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, .flags = E }, |
4f3f5ee1 |
{ "localport", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, D|E }, |
66028b7b |
{ "local_port", "Local port", OFFSET(local_port), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
{ "localaddr", "Local address", OFFSET(localaddr), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = D|E }, |
4f3f5ee1 |
{ "udplite_coverage", "choose UDPLite head size which should be validated by checksum", OFFSET(udplite_coverage), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, D|E },
{ "pkt_size", "Maximum UDP packet size", OFFSET(pkt_size), AV_OPT_TYPE_INT, { .i64 = 1472 }, -1, INT_MAX, .flags = D|E }, |
43ecec0f |
{ "reuse", "explicitly allow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D|E },
{ "reuse_socket", "explicitly allow reusing UDP sockets", OFFSET(reuse_socket), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, .flags = D|E },
{ "broadcast", "explicitly allow or disallow broadcast destination", OFFSET(is_broadcast), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E }, |
4f3f5ee1 |
{ "ttl", "Time to live (multicast only)", OFFSET(ttl), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, INT_MAX, E }, |
43ecec0f |
{ "connect", "set if connect() should be called on socket", OFFSET(is_connected), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, .flags = D|E }, |
4f3f5ee1 |
{ "fifo_size", "set the UDP receiving circular buffer size, expressed as a number of packets with size of 188 bytes", OFFSET(circular_buffer_size), AV_OPT_TYPE_INT, {.i64 = 7*4096}, 0, INT_MAX, D }, |
43ecec0f |
{ "overrun_nonfatal", "survive in case of UDP receiving circular buffer overrun", OFFSET(overrun_nonfatal), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, D }, |
4f3f5ee1 |
{ "timeout", "set raise error timeout (only in read mode)", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D }, |
66028b7b |
{ "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 },
{ NULL } |
aefed6ca |
};
|
66028b7b |
static const AVClass udp_class = {
.class_name = "udp",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT, |
aefed6ca |
};
|
07c3a4f6 |
static const AVClass udplite_context_class = {
.class_name = "udplite",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
|
a840cdda |
static void log_net_error(void *ctx, int level, const char* prefix)
{
char errbuf[100];
av_strerror(ff_neterrno(), errbuf, sizeof(errbuf));
av_log(ctx, level, "%s: %s\n", prefix, errbuf);
}
|
64810754 |
static int udp_set_multicast_ttl(int sockfd, int mcastTTL,
struct sockaddr *addr)
{ |
a8bde059 |
#ifdef IP_MULTICAST_TTL |
7a91333f |
if (addr->sa_family == AF_INET) {
if (setsockopt(sockfd, IPPROTO_IP, IP_MULTICAST_TTL, &mcastTTL, sizeof(mcastTTL)) < 0) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_MULTICAST_TTL)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
b4d68544 |
#if defined(IPPROTO_IPV6) && defined(IPV6_MULTICAST_HOPS) |
7a91333f |
if (addr->sa_family == AF_INET6) {
if (setsockopt(sockfd, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, &mcastTTL, sizeof(mcastTTL)) < 0) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_MULTICAST_HOPS)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
7a91333f |
return 0;
}
|
5fe415f0 |
static int udp_join_multicast_group(int sockfd, struct sockaddr *addr,struct sockaddr *local_addr) |
64810754 |
{ |
a8bde059 |
#ifdef IP_ADD_MEMBERSHIP |
7a91333f |
if (addr->sa_family == AF_INET) { |
a8bde059 |
struct ip_mreq mreq;
|
7a91333f |
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; |
5fe415f0 |
if (local_addr)
mreq.imr_interface= ((struct sockaddr_in *)local_addr)->sin_addr;
else
mreq.imr_interface.s_addr= INADDR_ANY; |
7a91333f |
if (setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_MEMBERSHIP)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
63206a8f |
#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6) |
7a91333f |
if (addr->sa_family == AF_INET6) { |
a8bde059 |
struct ipv6_mreq mreq6;
|
7a91333f |
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) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_ADD_MEMBERSHIP)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
7a91333f |
return 0;
}
|
5fe415f0 |
static int udp_leave_multicast_group(int sockfd, struct sockaddr *addr,struct sockaddr *local_addr) |
64810754 |
{ |
a8bde059 |
#ifdef IP_DROP_MEMBERSHIP |
7a91333f |
if (addr->sa_family == AF_INET) { |
a8bde059 |
struct ip_mreq mreq;
|
7a91333f |
mreq.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr; |
5fe415f0 |
if (local_addr)
mreq.imr_interface= ((struct sockaddr_in *)local_addr)->sin_addr;
else
mreq.imr_interface.s_addr= INADDR_ANY; |
7a91333f |
if (setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, (const void *)&mreq, sizeof(mreq)) < 0) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_DROP_MEMBERSHIP)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
63206a8f |
#if HAVE_STRUCT_IPV6_MREQ && defined(IPPROTO_IPV6) |
7a91333f |
if (addr->sa_family == AF_INET6) { |
a8bde059 |
struct ipv6_mreq mreq6;
|
7a91333f |
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) { |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IPV6_DROP_MEMBERSHIP)"); |
7a91333f |
return -1;
}
} |
a8bde059 |
#endif |
7a91333f |
return 0;
}
|
34af7813 |
static struct addrinfo *udp_resolve_host(URLContext *h,
const char *hostname, int port, |
64810754 |
int type, int family, int flags)
{ |
a92be9b8 |
struct addrinfo hints = { 0 }, *res = 0; |
7a91333f |
int error;
char sport[16]; |
d607861c |
const char *node = 0, *service = "0"; |
7a91333f |
if (port > 0) { |
2fc8ea24 |
snprintf(sport, sizeof(sport), "%d", port); |
7a91333f |
service = sport;
}
if ((hostname) && (hostname[0] != '\0') && (hostname[0] != '?')) {
node = hostname;
} |
7d8576c2 |
hints.ai_socktype = type;
hints.ai_family = family;
hints.ai_flags = flags;
if ((error = getaddrinfo(node, service, &hints, &res))) { |
11a74f36 |
res = NULL; |
12b14382 |
av_log(h, AV_LOG_ERROR, "getaddrinfo(%s, %s): %s\n",
node ? node : "unknown", |
8b05a7ff |
service, |
34af7813 |
gai_strerror(error)); |
7d8576c2 |
}
|
7a91333f |
return res;
}
|
34af7813 |
static int udp_set_multicast_sources(URLContext *h,
int sockfd, struct sockaddr *addr, |
75d339e0 |
int addr_len, char **sources,
int nb_sources, int include)
{ |
3c821a1a |
#if HAVE_STRUCT_GROUP_SOURCE_REQ && defined(MCAST_BLOCK_SOURCE) && !defined(_WIN32) && (!defined(TARGET_OS_TV) || !TARGET_OS_TV) |
75d339e0 |
/* These ones are available in the microsoft SDK, but don't seem to work
* as on linux, so just prefer the v4-only approach there for now. */
int i;
for (i = 0; i < nb_sources; i++) {
struct group_source_req mreqs;
int level = addr->sa_family == AF_INET ? IPPROTO_IP : IPPROTO_IPV6; |
34af7813 |
struct addrinfo *sourceaddr = udp_resolve_host(h, sources[i], 0, |
75d339e0 |
SOCK_DGRAM, AF_UNSPEC, |
3357bccc |
0); |
75d339e0 |
if (!sourceaddr)
return AVERROR(ENOENT);
mreqs.gsr_interface = 0;
memcpy(&mreqs.gsr_group, addr, addr_len);
memcpy(&mreqs.gsr_source, sourceaddr->ai_addr, sourceaddr->ai_addrlen);
freeaddrinfo(sourceaddr);
if (setsockopt(sockfd, level,
include ? MCAST_JOIN_SOURCE_GROUP : MCAST_BLOCK_SOURCE,
(const void *)&mreqs, sizeof(mreqs)) < 0) {
if (include)
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_JOIN_SOURCE_GROUP)");
else
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(MCAST_BLOCK_SOURCE)");
return ff_neterrno();
}
}
#elif HAVE_STRUCT_IP_MREQ_SOURCE && defined(IP_BLOCK_SOURCE)
int i;
if (addr->sa_family != AF_INET) {
av_log(NULL, AV_LOG_ERROR,
"Setting multicast sources only supported for IPv4\n");
return AVERROR(EINVAL);
}
for (i = 0; i < nb_sources; i++) {
struct ip_mreq_source mreqs; |
34af7813 |
struct addrinfo *sourceaddr = udp_resolve_host(h, sources[i], 0, |
75d339e0 |
SOCK_DGRAM, AF_UNSPEC, |
3357bccc |
0); |
75d339e0 |
if (!sourceaddr)
return AVERROR(ENOENT);
if (sourceaddr->ai_addr->sa_family != AF_INET) {
freeaddrinfo(sourceaddr);
av_log(NULL, AV_LOG_ERROR, "%s is of incorrect protocol family\n",
sources[i]);
return AVERROR(EINVAL);
}
mreqs.imr_multiaddr.s_addr = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
mreqs.imr_interface.s_addr = INADDR_ANY;
mreqs.imr_sourceaddr.s_addr = ((struct sockaddr_in *)sourceaddr->ai_addr)->sin_addr.s_addr;
freeaddrinfo(sourceaddr);
if (setsockopt(sockfd, IPPROTO_IP,
include ? IP_ADD_SOURCE_MEMBERSHIP : IP_BLOCK_SOURCE,
(const void *)&mreqs, sizeof(mreqs)) < 0) {
if (include)
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_ADD_SOURCE_MEMBERSHIP)");
else
log_net_error(NULL, AV_LOG_ERROR, "setsockopt(IP_BLOCK_SOURCE)");
return ff_neterrno();
}
}
#else
return AVERROR(ENOSYS);
#endif
return 0;
} |
34af7813 |
static int udp_set_url(URLContext *h,
struct sockaddr_storage *addr, |
64810754 |
const char *hostname, int port)
{ |
7a91333f |
struct addrinfo *res0; |
d05cb726 |
int addr_len;
|
34af7813 |
res0 = udp_resolve_host(h, hostname, port, SOCK_DGRAM, AF_UNSPEC, 0); |
7916053c |
if (!res0) return AVERROR(EIO); |
d05cb726 |
memcpy(addr, res0->ai_addr, res0->ai_addrlen);
addr_len = res0->ai_addrlen; |
7a91333f |
freeaddrinfo(res0); |
d05cb726 |
return addr_len; |
7a91333f |
}
|
34af7813 |
static int udp_socket_create(URLContext *h, struct sockaddr_storage *addr, |
be2efe0c |
socklen_t *addr_len, const char *localaddr) |
aa519c47 |
{ |
34af7813 |
UDPContext *s = h->priv_data; |
7a91333f |
int udp_fd = -1; |
74c81106 |
struct addrinfo *res0, *res; |
51844e6c |
int family = AF_UNSPEC; |
115329f1 |
|
51844e6c |
if (((struct sockaddr *) &s->dest_addr)->sa_family)
family = ((struct sockaddr *) &s->dest_addr)->sa_family; |
34af7813 |
res0 = udp_resolve_host(h, (localaddr && localaddr[0]) ? localaddr : NULL,
s->local_port, |
65ac5137 |
SOCK_DGRAM, family, AI_PASSIVE); |
7916053c |
if (!res0) |
7d8576c2 |
goto fail;
for (res = res0; res; res=res->ai_next) { |
07c3a4f6 |
if (s->udplite_coverage)
udp_fd = ff_socket(res->ai_family, SOCK_DGRAM, IPPROTO_UDPLITE);
else
udp_fd = ff_socket(res->ai_family, SOCK_DGRAM, 0); |
042b272a |
if (udp_fd != -1) break; |
a840cdda |
log_net_error(NULL, AV_LOG_ERROR, "socket"); |
7d8576c2 |
} |
276358c1 |
if (udp_fd < 0) |
7a91333f |
goto fail; |
115329f1 |
|
aa519c47 |
memcpy(addr, res->ai_addr, res->ai_addrlen);
*addr_len = res->ai_addrlen; |
7a91333f |
|
aa519c47 |
freeaddrinfo(res0); |
115329f1 |
|
7a91333f |
return udp_fd; |
115329f1 |
|
7a91333f |
fail:
if (udp_fd >= 0)
closesocket(udp_fd); |
88730be6 |
if(res0)
freeaddrinfo(res0); |
7a91333f |
return -1;
}
|
aa519c47 |
static int udp_port(struct sockaddr_storage *addr, int addr_len)
{ |
03c09e43 |
char sbuf[sizeof(int)*3+1]; |
860b40f1 |
int error; |
aa519c47 |
|
860b40f1 |
if ((error = getnameinfo((struct sockaddr *)addr, addr_len, NULL, 0, sbuf, sizeof(sbuf), NI_NUMERICSERV)) != 0) {
av_log(NULL, AV_LOG_ERROR, "getnameinfo: %s\n", gai_strerror(error)); |
aa519c47 |
return -1;
}
return strtol(sbuf, NULL, 10);
}
|
7a91333f |
|
2d225591 |
/**
* 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...] |
35b74c3d |
* option: 'ttl=n' : set the ttl value (for multicast only) |
2d225591 |
* 'localport=n' : set the local port |
9899efb4 |
* 'pkt_size=n' : set max packet size |
34ecc397 |
* 'reuse=1' : enable reusing the socket |
3069e70f |
* 'overrun_nonfatal=1': survive in case of circular buffer overrun |
2d225591 |
* |
9a58234f |
* @param h media file context |
2d225591 |
* @param uri of the remote server
* @return zero if no error.
*/ |
4ec153bb |
int ff_udp_set_remote_url(URLContext *h, const char *uri) |
2d225591 |
{
UDPContext *s = h->priv_data; |
21a569f3 |
char hostname[256], buf[10]; |
2d225591 |
int port; |
21a569f3 |
const char *p; |
115329f1 |
|
f3bfe388 |
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri); |
de6d9b64 |
|
2d225591 |
/* set the destination address */ |
34af7813 |
s->dest_addr_len = udp_set_url(h, &s->dest_addr, hostname, port); |
d05cb726 |
if (s->dest_addr_len < 0) { |
6f3e0b21 |
return AVERROR(EIO); |
d05cb726 |
} |
55b6bd1c |
s->is_multicast = ff_is_multicast_address((struct sockaddr*) &s->dest_addr); |
21a569f3 |
p = strchr(uri, '?');
if (p) { |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) { |
21a569f3 |
int was_connected = s->is_connected;
s->is_connected = strtol(buf, NULL, 10);
if (s->is_connected && !was_connected) {
if (connect(s->udp_fd, (struct sockaddr *) &s->dest_addr,
s->dest_addr_len)) {
s->is_connected = 0; |
a840cdda |
log_net_error(h, AV_LOG_ERROR, "connect"); |
21a569f3 |
return AVERROR(EIO);
}
}
}
} |
d05cb726 |
|
2d225591 |
return 0;
}
/** |
48e77473 |
* Return the local port used by the UDP connection |
9a58234f |
* @param h media file context |
2d225591 |
* @return the local port number
*/ |
4ec153bb |
int ff_udp_get_local_port(URLContext *h) |
2d225591 |
{
UDPContext *s = h->priv_data;
return s->local_port;
}
/**
* Return the udp file handle for select() usage to wait for several RTP
* streams at the same time.
* @param h media file context
*/ |
c4efa7c2 |
static int udp_get_file_handle(URLContext *h) |
2d225591 |
{
UDPContext *s = h->priv_data;
return s->udp_fd;
}
|
281bde27 |
#if HAVE_PTHREAD_CANCEL |
413c842a |
static void *circular_buffer_task_rx( void *_URLContext) |
42756021 |
{
URLContext *h = _URLContext;
UDPContext *s = h->priv_data; |
aa129788 |
int old_cancelstate; |
42756021 |
|
aa129788 |
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate); |
afbf9ed0 |
pthread_mutex_lock(&s->mutex); |
282a6308 |
if (ff_socket_nonblock(s->udp_fd, 0) < 0) {
av_log(h, AV_LOG_ERROR, "Failed to set blocking mode");
s->circular_buffer_error = AVERROR(EIO);
goto end;
} |
aa129788 |
while(1) { |
42756021 |
int len;
|
afbf9ed0 |
pthread_mutex_unlock(&s->mutex); |
aa129788 |
/* Blocking operations are always cancellation points;
see "General Information" / "Thread Cancelation Overview"
in Single Unix. */
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancelstate); |
20f0bf8c |
len = recv(s->udp_fd, s->tmp+4, sizeof(s->tmp)-4, 0); |
aa129788 |
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate); |
afbf9ed0 |
pthread_mutex_lock(&s->mutex); |
42756021 |
if (len < 0) {
if (ff_neterrno() != AVERROR(EAGAIN) && ff_neterrno() != AVERROR(EINTR)) { |
e1838835 |
s->circular_buffer_error = ff_neterrno(); |
bc900501 |
goto end; |
42756021 |
} |
7c4e4c6a |
continue; |
42756021 |
} |
20f0bf8c |
AV_WL32(s->tmp, len); |
5deb5ccb |
if(av_fifo_space(s->fifo) < len + 4) { |
3069e70f |
/* No Space left */
if (s->overrun_nonfatal) {
av_log(h, AV_LOG_WARNING, "Circular buffer overrun. "
"Surviving due to overrun_nonfatal option\n");
continue;
} else {
av_log(h, AV_LOG_ERROR, "Circular buffer overrun. "
"To avoid, increase fifo_size URL option. "
"To survive in such case, use overrun_nonfatal option\n");
s->circular_buffer_error = AVERROR(EIO);
goto end;
}
} |
20f0bf8c |
av_fifo_generic_write(s->fifo, s->tmp, len+4, NULL); |
bc900501 |
pthread_cond_signal(&s->cond); |
42756021 |
}
|
bc900501 |
end:
pthread_cond_signal(&s->cond);
pthread_mutex_unlock(&s->mutex); |
42756021 |
return NULL;
} |
413c842a |
static void *circular_buffer_task_tx( void *_URLContext)
{
URLContext *h = _URLContext;
UDPContext *s = h->priv_data;
int old_cancelstate; |
cc16229d |
int64_t target_timestamp = av_gettime_relative();
int64_t start_timestamp = av_gettime_relative();
int64_t sent_bits = 0;
int64_t burst_interval = s->bitrate ? (s->burst_bits * 1000000 / s->bitrate) : 0;
int64_t max_delay = s->bitrate ? ((int64_t)h->max_packet_size * 8 * 1000000 / s->bitrate + 1) : 0; |
413c842a |
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate); |
9b7a8bdd |
pthread_mutex_lock(&s->mutex);
if (ff_socket_nonblock(s->udp_fd, 0) < 0) {
av_log(h, AV_LOG_ERROR, "Failed to set blocking mode");
s->circular_buffer_error = AVERROR(EIO);
goto end;
} |
413c842a |
for(;;) {
int len; |
9b7a8bdd |
const uint8_t *p; |
413c842a |
uint8_t tmp[4]; |
0a065694 |
int64_t timestamp; |
413c842a |
len=av_fifo_size(s->fifo);
while (len<4) { |
9b7a8bdd |
if (s->close_req)
goto end; |
413c842a |
if (pthread_cond_wait(&s->cond, &s->mutex) < 0) {
goto end;
}
len=av_fifo_size(s->fifo);
}
|
9b7a8bdd |
av_fifo_generic_read(s->fifo, tmp, 4, NULL); |
413c842a |
len=AV_RL32(tmp);
|
9b7a8bdd |
av_assert0(len >= 0);
av_assert0(len <= sizeof(s->tmp));
av_fifo_generic_read(s->fifo, s->tmp, len, NULL);
pthread_mutex_unlock(&s->mutex);
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old_cancelstate);
|
cc16229d |
if (s->bitrate) { |
0a065694 |
timestamp = av_gettime_relative();
if (timestamp < target_timestamp) { |
cc16229d |
int64_t delay = target_timestamp - timestamp;
if (delay > max_delay) {
delay = max_delay;
start_timestamp = timestamp + delay;
sent_bits = 0;
}
av_usleep(delay); |
0a065694 |
} else { |
cc16229d |
if (timestamp - burst_interval > target_timestamp) {
start_timestamp = timestamp - burst_interval;
sent_bits = 0;
} |
0a065694 |
} |
cc16229d |
sent_bits += len * 8;
target_timestamp = start_timestamp + sent_bits * 1000000 / s->bitrate; |
0a065694 |
}
|
9b7a8bdd |
p = s->tmp;
while (len) {
int ret;
av_assert0(len > 0);
if (!s->is_connected) {
ret = sendto (s->udp_fd, p, len, 0,
(struct sockaddr *) &s->dest_addr,
s->dest_addr_len);
} else
ret = send(s->udp_fd, p, len, 0);
if (ret >= 0) {
len -= ret;
p += ret;
} else {
ret = ff_neterrno();
if (ret != AVERROR(EAGAIN) && ret != AVERROR(EINTR)) { |
4865252c |
pthread_mutex_lock(&s->mutex); |
9b7a8bdd |
s->circular_buffer_error = ret; |
4865252c |
pthread_mutex_unlock(&s->mutex); |
9b7a8bdd |
return NULL;
} |
413c842a |
}
}
|
9b7a8bdd |
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &old_cancelstate);
pthread_mutex_lock(&s->mutex); |
413c842a |
}
end:
pthread_mutex_unlock(&s->mutex);
return NULL;
}
|
bc900501 |
#endif |
42756021 |
|
7d99c929 |
static int parse_source_list(char *buf, char **sources, int *num_sources,
int max_sources)
{
char *source_start;
source_start = buf;
while (1) {
char *next = strchr(source_start, ',');
if (next)
*next = '\0';
sources[*num_sources] = av_strdup(source_start);
if (!sources[*num_sources])
return AVERROR(ENOMEM);
source_start = next + 1;
(*num_sources)++;
if (*num_sources >= max_sources || !next)
break;
}
return 0;
}
|
2d225591 |
/* put it in UDP context */ |
de6d9b64 |
/* return non zero if error */
static int udp_open(URLContext *h, const char *uri, int flags)
{ |
65ac5137 |
char hostname[1024], localaddr[1024] = ""; |
5269cef4 |
int port, udp_fd = -1, tmp, bind_ret = -1, dscp = -1; |
7e580505 |
UDPContext *s = h->priv_data; |
88730be6 |
int is_output; |
2d225591 |
const char *p;
char buf[256]; |
aa519c47 |
struct sockaddr_storage my_addr; |
be2efe0c |
socklen_t len; |
7d99c929 |
int i, num_include_sources = 0, num_exclude_sources = 0;
char *include_sources[32], *exclude_sources[32]; |
de6d9b64 |
h->is_streamed = 1;
|
a7ea5e3d |
is_output = !(flags & AVIO_FLAG_READ); |
66028b7b |
if (s->buffer_size < 0) |
aefed6ca |
s->buffer_size = is_output ? UDP_TX_BUF_SIZE : UDP_MAX_PKT_SIZE; |
42756021 |
|
66028b7b |
if (s->sources) {
if (parse_source_list(s->sources, include_sources,
&num_include_sources,
FF_ARRAY_ELEMS(include_sources)))
goto fail;
}
if (s->block) {
if (parse_source_list(s->block, exclude_sources, &num_exclude_sources,
FF_ARRAY_ELEMS(exclude_sources)))
goto fail;
}
|
ff7adead |
if (s->pkt_size > 0) |
66028b7b |
h->max_packet_size = s->pkt_size; |
236bb1ab |
|
2d225591 |
p = strchr(uri, '?');
if (p) { |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "reuse", p)) { |
5d62d0b1 |
char *endptr = NULL; |
00952be4 |
s->reuse_socket = strtol(buf, &endptr, 10);
/* assume if no digits were found it is a request to enable it */
if (buf == endptr)
s->reuse_socket = 1;
} |
3069e70f |
if (av_find_info_tag(buf, sizeof(buf), "overrun_nonfatal", p)) {
char *endptr = NULL;
s->overrun_nonfatal = strtol(buf, &endptr, 10);
/* assume if no digits were found it is a request to enable it */
if (buf == endptr)
s->overrun_nonfatal = 1; |
a8d8e868 |
if (!HAVE_PTHREAD_CANCEL)
av_log(h, AV_LOG_WARNING,
"'overrun_nonfatal' option was set but it is not supported "
"on this build (pthread support is required)\n"); |
3069e70f |
} |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "ttl", p)) { |
2d225591 |
s->ttl = strtol(buf, NULL, 10);
} |
07c3a4f6 |
if (av_find_info_tag(buf, sizeof(buf), "udplite_coverage", p)) {
s->udplite_coverage = strtol(buf, NULL, 10);
} |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "localport", p)) { |
2d225591 |
s->local_port = strtol(buf, NULL, 10);
} |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "pkt_size", p)) { |
4f3f5ee1 |
s->pkt_size = strtol(buf, NULL, 10); |
9899efb4 |
} |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "buffer_size", p)) { |
236bb1ab |
s->buffer_size = strtol(buf, NULL, 10);
} |
ab0287fc |
if (av_find_info_tag(buf, sizeof(buf), "connect", p)) { |
6766a354 |
s->is_connected = strtol(buf, NULL, 10);
} |
5269cef4 |
if (av_find_info_tag(buf, sizeof(buf), "dscp", p)) {
dscp = strtol(buf, NULL, 10);
} |
bd652ff6 |
if (av_find_info_tag(buf, sizeof(buf), "fifo_size", p)) { |
aefed6ca |
s->circular_buffer_size = strtol(buf, NULL, 10); |
a8d8e868 |
if (!HAVE_PTHREAD_CANCEL)
av_log(h, AV_LOG_WARNING,
"'circular_buffer_size' option was set but it is not supported "
"on this build (pthread support is required)\n"); |
42756021 |
} |
cc16229d |
if (av_find_info_tag(buf, sizeof(buf), "bitrate", p)) {
s->bitrate = strtoll(buf, NULL, 10); |
413c842a |
if (!HAVE_PTHREAD_CANCEL)
av_log(h, AV_LOG_WARNING, |
cc16229d |
"'bitrate' option was set but it is not supported " |
413c842a |
"on this build (pthread support is required)\n");
} |
cc16229d |
if (av_find_info_tag(buf, sizeof(buf), "burst_bits", p)) {
s->burst_bits = strtoll(buf, NULL, 10);
} |
65ac5137 |
if (av_find_info_tag(buf, sizeof(buf), "localaddr", p)) {
av_strlcpy(localaddr, buf, sizeof(localaddr));
} |
7d99c929 |
if (av_find_info_tag(buf, sizeof(buf), "sources", p)) {
if (parse_source_list(buf, include_sources, &num_include_sources,
FF_ARRAY_ELEMS(include_sources)))
goto fail;
}
if (av_find_info_tag(buf, sizeof(buf), "block", p)) {
if (parse_source_list(buf, exclude_sources, &num_exclude_sources,
FF_ARRAY_ELEMS(exclude_sources)))
goto fail; |
75d339e0 |
} |
028b6d2b |
if (!is_output && av_find_info_tag(buf, sizeof(buf), "timeout", p)) |
aefed6ca |
s->timeout = strtol(buf, NULL, 10); |
f1c16749 |
if (is_output && av_find_info_tag(buf, sizeof(buf), "broadcast", p))
s->is_broadcast = strtol(buf, NULL, 10); |
de6d9b64 |
} |
aefed6ca |
/* handling needed to support options picking from both AVOption and URL */
s->circular_buffer_size *= 188; |
804c7b2c |
if (flags & AVIO_FLAG_WRITE) { |
4f3f5ee1 |
h->max_packet_size = s->pkt_size; |
804c7b2c |
} else {
h->max_packet_size = UDP_MAX_PKT_SIZE;
} |
aefed6ca |
h->rw_timeout = s->timeout; |
2d225591 |
/* fill the dest addr */ |
f3bfe388 |
av_url_split(NULL, 0, NULL, 0, hostname, sizeof(hostname), &port, NULL, 0, uri); |
115329f1 |
|
f3bfe388 |
/* XXX: fix av_url_split */ |
2d225591 |
if (hostname[0] == '\0' || hostname[0] == '?') {
/* only accepts null hostname if input */ |
a7ea5e3d |
if (!(flags & AVIO_FLAG_READ)) |
2d225591 |
goto fail;
} else { |
4ec153bb |
if (ff_udp_set_remote_url(h, uri) < 0) |
82505611 |
goto fail; |
2d225591 |
} |
de6d9b64 |
|
4f3f5ee1 |
if ((s->is_multicast || s->local_port <= 0) && (h->flags & AVIO_FLAG_READ)) |
882d00f2 |
s->local_port = port; |
66028b7b |
if (localaddr[0]) |
34af7813 |
udp_fd = udp_socket_create(h, &my_addr, &len, localaddr); |
66028b7b |
else |
34af7813 |
udp_fd = udp_socket_create(h, &my_addr, &len, s->localaddr); |
2d225591 |
if (udp_fd < 0)
goto fail;
|
5fe415f0 |
s->local_addr_storage=my_addr; //store for future multicast join
|
00952be4 |
/* Follow the requested reuse option, unless it's multicast in which |
da9cea77 |
* case enable reuse unless explicitly disabled. |
00952be4 |
*/ |
66028b7b |
if (s->reuse_socket > 0 || (s->is_multicast && s->reuse_socket < 0)) { |
00952be4 |
s->reuse_socket = 1; |
34ecc397 |
if (setsockopt (udp_fd, SOL_SOCKET, SO_REUSEADDR, &(s->reuse_socket), sizeof(s->reuse_socket)) != 0)
goto fail; |
00952be4 |
} |
34ecc397 |
|
f1c16749 |
if (s->is_broadcast) { |
b2d1e22c |
#ifdef SO_BROADCAST |
f1c16749 |
if (setsockopt (udp_fd, SOL_SOCKET, SO_BROADCAST, &(s->is_broadcast), sizeof(s->is_broadcast)) != 0) |
b2d1e22c |
#endif |
f1c16749 |
goto fail;
}
|
07c3a4f6 |
/* Set the checksum coverage for UDP-Lite (RFC 3828) for sending and receiving.
* The receiver coverage has to be less than or equal to the sender coverage.
* Otherwise, the receiver will drop all packets.
*/
if (s->udplite_coverage) {
if (setsockopt (udp_fd, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV, &(s->udplite_coverage), sizeof(s->udplite_coverage)) != 0)
av_log(h, AV_LOG_WARNING, "socket option UDPLITE_SEND_CSCOV not available");
if (setsockopt (udp_fd, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV, &(s->udplite_coverage), sizeof(s->udplite_coverage)) != 0)
av_log(h, AV_LOG_WARNING, "socket option UDPLITE_RECV_CSCOV not available");
}
|
5269cef4 |
if (dscp >= 0) {
dscp <<= 2;
if (setsockopt (udp_fd, IPPROTO_IP, IP_TOS, &dscp, sizeof(dscp)) != 0)
goto fail;
}
|
1b89bcdd |
/* If multicast, try binding the multicast address first, to avoid
* receiving UDP packets from other sources aimed at the same UDP |
c700fdb0 |
* port. This fails on windows. This makes sending to the same address
* using sendto() fail, so only do it if we're opened in read-only mode. */
if (s->is_multicast && !(h->flags & AVIO_FLAG_WRITE)) { |
36b53281 |
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 */ |
113d3e10 |
/* the bind is needed to give a port to the socket now */ |
a887c87c |
if (bind_ret < 0 && bind(udp_fd,(struct sockaddr *)&my_addr, len) < 0) { |
a840cdda |
log_net_error(h, AV_LOG_ERROR, "bind failed"); |
de6d9b64 |
goto fail; |
a887c87c |
} |
de6d9b64 |
|
d4936869 |
len = sizeof(my_addr);
getsockname(udp_fd, (struct sockaddr *)&my_addr, &len); |
aa519c47 |
s->local_port = udp_port(&my_addr, len);
|
7a91333f |
if (s->is_multicast) { |
2bfd92b3 |
if (h->flags & AVIO_FLAG_WRITE) { |
a8bde059 |
/* output */ |
9cdcb04f |
if (udp_set_multicast_ttl(udp_fd, s->ttl, (struct sockaddr *)&s->dest_addr) < 0) |
7a91333f |
goto fail; |
2bfd92b3 |
}
if (h->flags & AVIO_FLAG_READ) { |
a8bde059 |
/* input */ |
7d99c929 |
if (num_include_sources && num_exclude_sources) {
av_log(h, AV_LOG_ERROR, "Simultaneously including and excluding multicast sources is not supported\n");
goto fail;
}
if (num_include_sources) { |
34af7813 |
if (udp_set_multicast_sources(h, udp_fd,
(struct sockaddr *)&s->dest_addr,
s->dest_addr_len,
include_sources,
num_include_sources, 1) < 0) |
7d99c929 |
goto fail;
} else { |
5fe415f0 |
if (udp_join_multicast_group(udp_fd, (struct sockaddr *)&s->dest_addr,(struct sockaddr *)&s->local_addr_storage) < 0) |
75d339e0 |
goto fail; |
7d99c929 |
}
if (num_exclude_sources) { |
34af7813 |
if (udp_set_multicast_sources(h, udp_fd,
(struct sockaddr *)&s->dest_addr,
s->dest_addr_len,
exclude_sources,
num_exclude_sources, 0) < 0) |
75d339e0 |
goto fail;
} |
7a91333f |
}
} |
de6d9b64 |
|
2d225591 |
if (is_output) {
/* limit the tx buf size to limit latency */ |
236bb1ab |
tmp = s->buffer_size; |
2d225591 |
if (setsockopt(udp_fd, SOL_SOCKET, SO_SNDBUF, &tmp, sizeof(tmp)) < 0) { |
a840cdda |
log_net_error(h, AV_LOG_ERROR, "setsockopt(SO_SNDBUF)"); |
2d225591 |
goto fail;
} |
f18cae4d |
} else { |
0b4c5c99 |
/* set udp recv buffer size to the requested value (default 64K) */ |
236bb1ab |
tmp = s->buffer_size;
if (setsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, sizeof(tmp)) < 0) { |
a840cdda |
log_net_error(h, AV_LOG_WARNING, "setsockopt(SO_RECVBUF)"); |
236bb1ab |
} |
2be1e1b2 |
len = sizeof(tmp);
if (getsockopt(udp_fd, SOL_SOCKET, SO_RCVBUF, &tmp, &len) < 0) {
log_net_error(h, AV_LOG_WARNING, "getsockopt(SO_RCVBUF)"); |
0b4c5c99 |
} else { |
2be1e1b2 |
av_log(h, AV_LOG_DEBUG, "end receive buffer size reported is %d\n", tmp); |
0b4c5c99 |
if(tmp < s->buffer_size)
av_log(h, AV_LOG_WARNING, "attempted to set receive buffer to size %d but it only ended up set as %d", s->buffer_size, tmp);
} |
2be1e1b2 |
|
ce09d560 |
/* make the socket non-blocking */
ff_socket_nonblock(udp_fd, 1); |
2d225591 |
} |
6766a354 |
if (s->is_connected) {
if (connect(udp_fd, (struct sockaddr *) &s->dest_addr, s->dest_addr_len)) { |
a840cdda |
log_net_error(h, AV_LOG_ERROR, "connect"); |
6766a354 |
goto fail;
}
} |
2d225591 |
|
7d99c929 |
for (i = 0; i < num_include_sources; i++)
av_freep(&include_sources[i]);
for (i = 0; i < num_exclude_sources; i++)
av_freep(&exclude_sources[i]); |
75d339e0 |
|
2d225591 |
s->udp_fd = udp_fd; |
42756021 |
|
281bde27 |
#if HAVE_PTHREAD_CANCEL |
413c842a |
/*
Create thread in case of:
1. Input and circular_buffer_size is set |
cc16229d |
2. Output and bitrate and circular_buffer_size is set |
413c842a |
*/
|
cc16229d |
if (is_output && s->bitrate && !s->circular_buffer_size) { |
413c842a |
/* Warn user in case of 'circular_buffer_size' is not set */ |
cc16229d |
av_log(h, AV_LOG_WARNING,"'bitrate' option was set but 'circular_buffer_size' is not, but required\n"); |
413c842a |
}
|
cc16229d |
if ((!is_output && s->circular_buffer_size) || (is_output && s->bitrate && s->circular_buffer_size)) { |
45c39e56 |
int ret;
|
42756021 |
/* start the task going */ |
03f8f397 |
s->fifo = av_fifo_alloc(s->circular_buffer_size); |
45c39e56 |
ret = pthread_mutex_init(&s->mutex, NULL);
if (ret != 0) {
av_log(h, AV_LOG_ERROR, "pthread_mutex_init failed : %s\n", strerror(ret)); |
42756021 |
goto fail;
} |
45c39e56 |
ret = pthread_cond_init(&s->cond, NULL);
if (ret != 0) {
av_log(h, AV_LOG_ERROR, "pthread_cond_init failed : %s\n", strerror(ret));
goto cond_fail;
} |
413c842a |
ret = pthread_create(&s->circular_buffer_thread, NULL, is_output?circular_buffer_task_tx:circular_buffer_task_rx, h); |
45c39e56 |
if (ret != 0) {
av_log(h, AV_LOG_ERROR, "pthread_create failed : %s\n", strerror(ret));
goto thread_fail;
}
s->thread_started = 1; |
42756021 |
} |
124a9edb |
#endif |
42756021 |
|
de6d9b64 |
return 0; |
281bde27 |
#if HAVE_PTHREAD_CANCEL |
45c39e56 |
thread_fail:
pthread_cond_destroy(&s->cond);
cond_fail:
pthread_mutex_destroy(&s->mutex);
#endif |
de6d9b64 |
fail: |
2d225591 |
if (udp_fd >= 0) |
9ddd71fc |
closesocket(udp_fd); |
ce1eefe6 |
av_fifo_freep(&s->fifo); |
7d99c929 |
for (i = 0; i < num_include_sources; i++)
av_freep(&include_sources[i]);
for (i = 0; i < num_exclude_sources; i++)
av_freep(&exclude_sources[i]); |
6f3e0b21 |
return AVERROR(EIO); |
de6d9b64 |
}
|
07c3a4f6 |
static int udplite_open(URLContext *h, const char *uri, int flags)
{
UDPContext *s = h->priv_data;
// set default checksum coverage
s->udplite_coverage = UDP_HEADER_SIZE;
return udp_open(h, uri, flags);
}
|
0c1a9eda |
static int udp_read(URLContext *h, uint8_t *buf, int size) |
de6d9b64 |
{
UDPContext *s = h->priv_data; |
7d084299 |
int ret; |
97cebf31 |
#if HAVE_PTHREAD_CANCEL |
463705bd |
int avail, nonblock = h->flags & AVIO_FLAG_NONBLOCK; |
42756021 |
|
e60e54ce |
if (s->fifo) { |
bc900501 |
pthread_mutex_lock(&s->mutex); |
42756021 |
do { |
03f8f397 |
avail = av_fifo_size(s->fifo); |
42756021 |
if (avail) { // >=size) { |
20f0bf8c |
uint8_t tmp[4];
av_fifo_generic_read(s->fifo, tmp, 4, NULL);
avail= AV_RL32(tmp);
if(avail > size){
av_log(h, AV_LOG_WARNING, "Part of datagram lost due to insufficient buffer size\n");
avail= size;
} |
42756021 |
|
20f0bf8c |
av_fifo_generic_read(s->fifo, buf, avail, NULL); |
b2bdca1b |
av_fifo_drain(s->fifo, AV_RL32(tmp) - avail); |
afbf9ed0 |
pthread_mutex_unlock(&s->mutex); |
20f0bf8c |
return avail; |
3dcbafc7 |
} else if(s->circular_buffer_error){ |
afbf9ed0 |
int err = s->circular_buffer_error; |
bc900501 |
pthread_mutex_unlock(&s->mutex); |
afbf9ed0 |
return err; |
463705bd |
} else if(nonblock) { |
9f50dafe |
pthread_mutex_unlock(&s->mutex);
return AVERROR(EAGAIN); |
42756021 |
}
else { |
463705bd |
/* FIXME: using the monotonic clock would be better,
but it does not exist on all supported platforms. */
int64_t t = av_gettime() + 100000;
struct timespec tv = { .tv_sec = t / 1000000,
.tv_nsec = (t % 1000000) * 1000 }; |
044c0e62 |
if (pthread_cond_timedwait(&s->cond, &s->mutex, &tv) < 0) {
pthread_mutex_unlock(&s->mutex); |
463705bd |
return AVERROR(errno == ETIMEDOUT ? EAGAIN : errno); |
044c0e62 |
} |
463705bd |
nonblock = 1; |
42756021 |
}
} while( 1);
} |
bc900501 |
#endif |
2d225591 |
|
f87b1b37 |
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
ebba2b3e |
ret = ff_network_wait_fd(s->udp_fd, 0);
if (ret < 0)
return ret; |
2d225591 |
} |
ebba2b3e |
ret = recv(s->udp_fd, buf, size, 0); |
42756021 |
|
ebba2b3e |
return ret < 0 ? ff_neterrno() : ret; |
de6d9b64 |
}
|
27241cbf |
static int udp_write(URLContext *h, const uint8_t *buf, int size) |
de6d9b64 |
{
UDPContext *s = h->priv_data; |
2d225591 |
int ret;
|
413c842a |
#if HAVE_PTHREAD_CANCEL
if (s->fifo) {
uint8_t tmp[4];
pthread_mutex_lock(&s->mutex);
/*
Return error if last tx failed.
Here we can't know on which packet error was, but it needs to know that error exists.
*/
if (s->circular_buffer_error<0) {
int err=s->circular_buffer_error;
pthread_mutex_unlock(&s->mutex);
return err;
}
if(av_fifo_space(s->fifo) < size + 4) {
/* What about a partial packet tx ? */
pthread_mutex_unlock(&s->mutex);
return AVERROR(ENOMEM);
}
AV_WL32(tmp, size);
av_fifo_generic_write(s->fifo, tmp, 4, NULL); /* size of packet */
av_fifo_generic_write(s->fifo, (uint8_t *)buf, size, NULL); /* the data */
pthread_cond_signal(&s->cond);
pthread_mutex_unlock(&s->mutex);
return size;
}
#endif |
f87b1b37 |
if (!(h->flags & AVIO_FLAG_NONBLOCK)) { |
ebba2b3e |
ret = ff_network_wait_fd(s->udp_fd, 1);
if (ret < 0)
return ret; |
de6d9b64 |
} |
ebba2b3e |
if (!s->is_connected) {
ret = sendto (s->udp_fd, buf, size, 0,
(struct sockaddr *) &s->dest_addr,
s->dest_addr_len);
} else
ret = send(s->udp_fd, buf, size, 0);
return ret < 0 ? ff_neterrno() : ret; |
2d225591 |
}
static int udp_close(URLContext *h)
{
UDPContext *s = h->priv_data;
|
9b7a8bdd |
#if HAVE_PTHREAD_CANCEL
// Request close once writing is finished
if (s->thread_started && !(h->flags & AVIO_FLAG_READ)) {
pthread_mutex_lock(&s->mutex);
s->close_req = 1;
pthread_cond_signal(&s->cond);
pthread_mutex_unlock(&s->mutex);
}
#endif
|
a7ea5e3d |
if (s->is_multicast && (h->flags & AVIO_FLAG_READ)) |
5fe415f0 |
udp_leave_multicast_group(s->udp_fd, (struct sockaddr *)&s->dest_addr,(struct sockaddr *)&s->local_addr_storage); |
281bde27 |
#if HAVE_PTHREAD_CANCEL |
45c39e56 |
if (s->thread_started) { |
97cebf31 |
int ret; |
9b7a8bdd |
// Cancel only read, as write has been signaled as success to the user
if (h->flags & AVIO_FLAG_READ)
pthread_cancel(s->circular_buffer_thread); |
45c39e56 |
ret = pthread_join(s->circular_buffer_thread, NULL);
if (ret != 0)
av_log(h, AV_LOG_ERROR, "pthread_join(): %s\n", strerror(ret)); |
388243bb |
pthread_mutex_destroy(&s->mutex);
pthread_cond_destroy(&s->cond); |
45c39e56 |
} |
bc900501 |
#endif |
9591ca70 |
closesocket(s->udp_fd); |
ce1eefe6 |
av_fifo_freep(&s->fifo); |
2d225591 |
return 0; |
de6d9b64 |
}
|
2758cded |
const URLProtocol ff_udp_protocol = { |
f35ff97f |
.name = "udp",
.url_open = udp_open,
.url_read = udp_read,
.url_write = udp_write,
.url_close = udp_close, |
f0a80394 |
.url_get_file_handle = udp_get_file_handle, |
7e580505 |
.priv_data_size = sizeof(UDPContext), |
66028b7b |
.priv_data_class = &udp_class, |
32b83aee |
.flags = URL_PROTOCOL_FLAG_NETWORK, |
de6d9b64 |
}; |
07c3a4f6 |
|
9c75148e |
const URLProtocol ff_udplite_protocol = { |
07c3a4f6 |
.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,
}; |