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
26 #include "os_support.h"
30 #ifdef HAVE_WINSOCK2_H
32 #elif defined (HAVE_SYS_SELECT_H)
33 #include <sys/select.h>
39 #if !defined(HAVE_INET_ATON)
43 int inet_aton (const char * str, struct in_addr * add)
45 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
47 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
50 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
52 add->s_addr=(add4<<24)+(add3<<16)+(add2<<8)+add1;
56 #endif /* !defined(HAVE_INET_ATON) */
58 /* resolve host with also IP address parsing */
59 int resolve_host(struct in_addr *sin_addr, const char *hostname)
63 if (!inet_aton(hostname, sin_addr)) {
64 hp = gethostbyname(hostname);
67 memcpy(sin_addr, hp->h_addr, sizeof(struct in_addr));
72 int ff_socket_nonblock(int socket, int enable)
74 #ifdef HAVE_WINSOCK2_H
75 return ioctlsocket(socket, FIONBIO, &enable);
78 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
80 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
83 #endif /* CONFIG_NETWORK */
85 #ifdef CONFIG_FFSERVER
87 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
96 #ifdef HAVE_WINSOCK2_H
97 if (numfds >= FD_SETSIZE) {
105 FD_ZERO(&exception_set);
108 for(i = 0; i < numfds; i++) {
111 #ifndef HAVE_WINSOCK2_H
112 if (fds[i].fd >= FD_SETSIZE) {
118 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
119 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
120 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
127 /* Hey!? Nothing to poll, in fact!!! */
131 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
135 tv.tv_sec = timeout / 1000;
136 tv.tv_usec = 1000 * (timeout % 1000);
137 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
143 for(i = 0; i < (nfds_t) n; i++) {
146 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
147 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
148 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
153 #endif /* HAVE_POLL_H */
154 #endif /* CONFIG_FFSERVER */