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lavf: Support unix sockets

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This commit is contained in:
Luca Barbato 2013-07-30 01:34:56 +02:00
parent bc54c2ae3c
commit 605387582b
5 changed files with 182 additions and 0 deletions
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4
configure vendored
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@ -1354,6 +1354,7 @@ HAVE_LIST="
sys_select_h
sys_soundcard_h
sys_time_h
sys_un_h
sys_videoio_h
threads
unistd_h
@ -1874,6 +1875,8 @@ tcp_protocol_select="network"
tls_protocol_deps_any="openssl gnutls"
tls_protocol_select="tcp_protocol"
udp_protocol_select="network"
unix_protocol_deps="sys_un_h"
unix_protocol_select="network"
# filters
blackframe_filter_deps="gpl"
@ -3657,6 +3660,7 @@ check_header sys/param.h
check_header sys/resource.h
check_header sys/select.h
check_header sys/time.h
check_header sys/un.h
check_header unistd.h
check_header vdpau/vdpau.h
check_header vdpau/vdpau_x11.h

20
doc/protocols.texi
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@ -626,4 +626,24 @@ To receive over UDP from a remote endpoint:
avconv -i udp://[@var{multicast-address}]:@var{port}
@end example
@section unix
Unix local socket
The required syntax for a Unix socket URL is:
@example
unix://@var{filepath}
@end example
The following parameters can be set via command line options
(or in code via @code{AVOption}s):
@table @option
@item timeout
Timeout in ms.
@item listen
Create the Unix socket in listening mode.
@end table
@c man end PROTOCOLS

1
libavformat/Makefile
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@ -376,6 +376,7 @@ OBJS-$(CONFIG_SRTP_PROTOCOL) += srtpproto.o srtp.o
OBJS-$(CONFIG_TCP_PROTOCOL) += tcp.o
OBJS-$(CONFIG_TLS_PROTOCOL) += tls.o
OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o
OBJS-$(CONFIG_UNIX_PROTOCOL) += unix.o
SKIPHEADERS-$(CONFIG_FFRTMPCRYPT_PROTOCOL) += rtmpdh.h
SKIPHEADERS-$(CONFIG_NETWORK) += network.h rtsp.h

1
libavformat/allformats.c
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@ -281,6 +281,7 @@ void av_register_all(void)
REGISTER_PROTOCOL(TCP, tcp);
REGISTER_PROTOCOL(TLS, tls);
REGISTER_PROTOCOL(UDP, udp);
REGISTER_PROTOCOL(UNIX, unix);
/* external libraries */
REGISTER_PROTOCOL(LIBRTMP, librtmp);

156
libavformat/unix.c Normal file
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@ -0,0 +1,156 @@
/*
* Unix socket protocol
* Copyright (c) 2013 Luca Barbato
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
*
* Unix socket url_protocol
*
*/
#include <sys/un.h>
#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "os_support.h"
#include "network.h"
#include "url.h"
typedef struct UnixContext {
const AVClass *class;
struct sockaddr_un addr;
int timeout;
int listen;
int type;
int fd;
} UnixContext;
#define OFFSET(x) offsetof(UnixContext, x)
#define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM
static const AVOption unix_options[] = {
{ "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ED },
{ "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED },
{ "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
{ "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
{ "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, "type" },
{ "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, "type" },
{ NULL }
};
static const AVClass unix_class = {
.class_name = "unix",
.item_name = av_default_item_name,
.option = unix_options,
.version = LIBAVUTIL_VERSION_INT,
};
static int unix_open(URLContext *h, const char *filename, int flags)
{
UnixContext *s = h->priv_data;
int fd, ret;
av_strstart(filename, "unix:", &filename);
s->addr.sun_family = AF_UNIX;
av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path));
if ((fd = socket(AF_UNIX, s->type, 0)) < 0)
return ff_neterrno();
if (s->listen) {
fd = ff_listen_bind(fd, (struct sockaddr *)&s->addr,
sizeof(s->addr), s->timeout, h);
if (fd < 0) {
ret = fd;
goto fail;
}
} else {
ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr,
sizeof(s->addr), s->timeout, h);
if (ret < 0)
goto fail;
}
s->fd = fd;
return 0;
fail:
if (s->listen && ret != EADDRINUSE)
unlink(s->addr.sun_path);
if (fd >= 0)
closesocket(fd);
return ret;
}
static int unix_read(URLContext *h, uint8_t *buf, int size)
{
UnixContext *s = h->priv_data;
int ret;
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
ret = ff_network_wait_fd(s->fd, 0);
if (ret < 0)
return ret;
}
ret = recv(s->fd, buf, size, 0);
return ret < 0 ? ff_neterrno() : ret;
}
static int unix_write(URLContext *h, const uint8_t *buf, int size)
{
UnixContext *s = h->priv_data;
int ret;
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
ret = ff_network_wait_fd(s->fd, 1);
if (ret < 0)
return ret;
}
ret = send(s->fd, buf, size, 0);
return ret < 0 ? ff_neterrno() : ret;
}
static int unix_close(URLContext *h)
{
UnixContext *s = h->priv_data;
if (s->listen)
unlink(s->addr.sun_path);
closesocket(s->fd);
return 0;
}
static int unix_get_file_handle(URLContext *h)
{
UnixContext *s = h->priv_data;
return s->fd;
}
URLProtocol ff_unix_protocol = {
.name = "unix",
.url_open = unix_open,
.url_read = unix_read,
.url_write = unix_write,
.url_close = unix_close,
.url_get_file_handle = unix_get_file_handle,
.priv_data_size = sizeof(UnixContext),
.priv_data_class = &unix_class,
.flags = URL_PROTOCOL_FLAG_NETWORK,
};