2 * Various utilities for ffmpeg system
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * copyright (c) 2002 Francois Revol
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 /* needed by inet_aton() */
31 #include "os_support.h"
37 #elif HAVE_SYS_SELECT_H
38 #include <sys/select.h>
48 int inet_aton (const char * str, struct in_addr * add)
50 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
52 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
55 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
57 add->s_addr=(add4<<24)+(add3<<16)+(add2<<8)+add1;
61 #endif /* !HAVE_INET_ATON */
63 /* resolve host with also IP address parsing */
64 int resolve_host(struct in_addr *sin_addr, const char *hostname)
68 if (!inet_aton(hostname, sin_addr)) {
69 hp = gethostbyname(hostname);
72 memcpy(sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
77 int ff_socket_nonblock(int socket, int enable)
80 return ioctlsocket(socket, FIONBIO, &enable);
83 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
85 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
88 #endif /* CONFIG_NETWORK */
92 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
102 if (numfds >= FD_SETSIZE) {
110 FD_ZERO(&exception_set);
113 for(i = 0; i < numfds; i++) {
117 if (fds[i].fd >= FD_SETSIZE) {
123 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
124 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
125 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
132 /* Hey!? Nothing to poll, in fact!!! */
136 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
140 tv.tv_sec = timeout / 1000;
141 tv.tv_usec = 1000 * (timeout % 1000);
142 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
148 for(i = 0; i < (nfds_t) n; i++) {
151 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
152 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
153 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
158 #endif /* HAVE_POLL_H */
159 #endif /* CONFIG_FFSERVER */