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https://github.com/FFmpeg/FFmpeg.git
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lavf: Support unix sockets
This commit is contained in:
Luca Barbato
parent
bc54c2ae3c
commit
605387582b
4
configure
vendored
4
configure
vendored
@ -1354,6 +1354,7 @@ HAVE_LIST="
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sys_select_h
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sys_soundcard_h
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sys_time_h
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sys_un_h
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sys_videoio_h
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threads
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unistd_h
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@ -1874,6 +1875,8 @@ tcp_protocol_select="network"
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tls_protocol_deps_any="openssl gnutls"
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tls_protocol_select="tcp_protocol"
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udp_protocol_select="network"
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unix_protocol_deps="sys_un_h"
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unix_protocol_select="network"
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# filters
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blackframe_filter_deps="gpl"
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@ -3657,6 +3660,7 @@ check_header sys/param.h
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check_header sys/resource.h
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check_header sys/select.h
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check_header sys/time.h
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check_header sys/un.h
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check_header unistd.h
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check_header vdpau/vdpau.h
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check_header vdpau/vdpau_x11.h
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@ -626,4 +626,24 @@ To receive over UDP from a remote endpoint:
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avconv -i udp://[@var{multicast-address}]:@var{port}
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@end example
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@section unix
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Unix local socket
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The required syntax for a Unix socket URL is:
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@example
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unix://@var{filepath}
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@end example
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The following parameters can be set via command line options
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(or in code via @code{AVOption}s):
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@table @option
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@item timeout
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Timeout in ms.
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@item listen
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Create the Unix socket in listening mode.
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@end table
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@c man end PROTOCOLS
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@ -376,6 +376,7 @@ OBJS-$(CONFIG_SRTP_PROTOCOL) += srtpproto.o srtp.o
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OBJS-$(CONFIG_TCP_PROTOCOL) += tcp.o
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OBJS-$(CONFIG_TLS_PROTOCOL) += tls.o
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OBJS-$(CONFIG_UDP_PROTOCOL) += udp.o
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OBJS-$(CONFIG_UNIX_PROTOCOL) += unix.o
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SKIPHEADERS-$(CONFIG_FFRTMPCRYPT_PROTOCOL) += rtmpdh.h
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SKIPHEADERS-$(CONFIG_NETWORK) += network.h rtsp.h
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@ -281,6 +281,7 @@ void av_register_all(void)
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REGISTER_PROTOCOL(TCP, tcp);
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REGISTER_PROTOCOL(TLS, tls);
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REGISTER_PROTOCOL(UDP, udp);
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REGISTER_PROTOCOL(UNIX, unix);
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/* external libraries */
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REGISTER_PROTOCOL(LIBRTMP, librtmp);
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156
libavformat/unix.c
Normal file
156
libavformat/unix.c
Normal file
@ -0,0 +1,156 @@
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/*
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* Unix socket protocol
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* Copyright (c) 2013 Luca Barbato
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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*
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* Unix socket url_protocol
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*
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*/
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#include <sys/un.h>
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "os_support.h"
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#include "network.h"
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#include "url.h"
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typedef struct UnixContext {
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const AVClass *class;
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struct sockaddr_un addr;
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int timeout;
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int listen;
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int type;
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int fd;
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} UnixContext;
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#define OFFSET(x) offsetof(UnixContext, x)
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#define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption unix_options[] = {
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{ "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ED },
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{ "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED },
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{ "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, "type" },
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{ "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, "type" },
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{ NULL }
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};
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static const AVClass unix_class = {
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.class_name = "unix",
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.item_name = av_default_item_name,
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.option = unix_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static int unix_open(URLContext *h, const char *filename, int flags)
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{
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UnixContext *s = h->priv_data;
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int fd, ret;
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av_strstart(filename, "unix:", &filename);
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s->addr.sun_family = AF_UNIX;
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av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path));
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if ((fd = socket(AF_UNIX, s->type, 0)) < 0)
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return ff_neterrno();
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if (s->listen) {
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fd = ff_listen_bind(fd, (struct sockaddr *)&s->addr,
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sizeof(s->addr), s->timeout, h);
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if (fd < 0) {
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ret = fd;
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goto fail;
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}
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} else {
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ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr,
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sizeof(s->addr), s->timeout, h);
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if (ret < 0)
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goto fail;
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}
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s->fd = fd;
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return 0;
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fail:
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if (s->listen && ret != EADDRINUSE)
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unlink(s->addr.sun_path);
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if (fd >= 0)
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closesocket(fd);
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return ret;
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}
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static int unix_read(URLContext *h, uint8_t *buf, int size)
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{
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UnixContext *s = h->priv_data;
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int ret;
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if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
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ret = ff_network_wait_fd(s->fd, 0);
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if (ret < 0)
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return ret;
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}
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ret = recv(s->fd, buf, size, 0);
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return ret < 0 ? ff_neterrno() : ret;
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}
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static int unix_write(URLContext *h, const uint8_t *buf, int size)
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{
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UnixContext *s = h->priv_data;
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int ret;
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if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
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ret = ff_network_wait_fd(s->fd, 1);
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if (ret < 0)
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return ret;
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}
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ret = send(s->fd, buf, size, 0);
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return ret < 0 ? ff_neterrno() : ret;
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}
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static int unix_close(URLContext *h)
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{
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UnixContext *s = h->priv_data;
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if (s->listen)
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unlink(s->addr.sun_path);
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closesocket(s->fd);
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return 0;
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}
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static int unix_get_file_handle(URLContext *h)
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{
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UnixContext *s = h->priv_data;
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return s->fd;
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}
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URLProtocol ff_unix_protocol = {
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.name = "unix",
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.url_open = unix_open,
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.url_read = unix_read,
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.url_write = unix_write,
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.url_close = unix_close,
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.url_get_file_handle = unix_get_file_handle,
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.priv_data_size = sizeof(UnixContext),
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.priv_data_class = &unix_class,
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.flags = URL_PROTOCOL_FLAG_NETWORK,
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};
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