3 * Copyright (c) 2013 Luca Barbato
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * Unix socket url_protocol
31 #include "libavutil/avstring.h"
32 #include "libavutil/opt.h"
33 #include "os_support.h"
37 typedef struct UnixContext {
39 struct sockaddr_un addr;
46 #define OFFSET(x) offsetof(UnixContext, x)
47 #define ED AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_ENCODING_PARAM
48 static const AVOption unix_options[] = {
49 { "listen", "Open socket for listening", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ED },
50 { "timeout", "Timeout in ms", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, ED },
51 { "type", "Socket type", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
52 { "stream", "Stream (reliable stream-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_STREAM }, INT_MIN, INT_MAX, ED, "type" },
53 { "datagram", "Datagram (unreliable packet-oriented)", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_DGRAM }, INT_MIN, INT_MAX, ED, "type" },
54 { "seqpacket", "Seqpacket (reliable packet-oriented", 0, AV_OPT_TYPE_CONST, { .i64 = SOCK_SEQPACKET }, INT_MIN, INT_MAX, ED, "type" },
58 static const AVClass unix_class = {
60 .item_name = av_default_item_name,
61 .option = unix_options,
62 .version = LIBAVUTIL_VERSION_INT,
65 static int unix_open(URLContext *h, const char *filename, int flags)
67 UnixContext *s = h->priv_data;
70 av_strstart(filename, "unix:", &filename);
71 s->addr.sun_family = AF_UNIX;
72 av_strlcpy(s->addr.sun_path, filename, sizeof(s->addr.sun_path));
74 if ((fd = ff_socket(AF_UNIX, s->type, 0)) < 0)
78 fd = ff_listen_bind(fd, (struct sockaddr *)&s->addr,
79 sizeof(s->addr), s->timeout, h);
85 ret = ff_listen_connect(fd, (struct sockaddr *)&s->addr,
86 sizeof(s->addr), s->timeout, h);
96 if (s->listen && ret != EADDRINUSE)
97 unlink(s->addr.sun_path);
103 static int unix_read(URLContext *h, uint8_t *buf, int size)
105 UnixContext *s = h->priv_data;
108 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
109 ret = ff_network_wait_fd(s->fd, 0);
113 ret = recv(s->fd, buf, size, 0);
114 return ret < 0 ? ff_neterrno() : ret;
117 static int unix_write(URLContext *h, const uint8_t *buf, int size)
119 UnixContext *s = h->priv_data;
122 if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
123 ret = ff_network_wait_fd(s->fd, 1);
127 ret = send(s->fd, buf, size, 0);
128 return ret < 0 ? ff_neterrno() : ret;
131 static int unix_close(URLContext *h)
133 UnixContext *s = h->priv_data;
135 unlink(s->addr.sun_path);
140 static int unix_get_file_handle(URLContext *h)
142 UnixContext *s = h->priv_data;
146 URLProtocol ff_unix_protocol = {
148 .url_open = unix_open,
149 .url_read = unix_read,
150 .url_write = unix_write,
151 .url_close = unix_close,
152 .url_get_file_handle = unix_get_file_handle,
153 .priv_data_size = sizeof(UnixContext),
154 .priv_data_class = &unix_class,
155 .flags = URL_PROTOCOL_FLAG_NETWORK,