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() */
28 #include "os_support.h"
30 #if defined(_WIN32) && !defined(__MINGW32CE__)
34 int ff_win32_open(const char *filename_utf8, int oflag, int pmode)
40 /* convert UTF-8 to wide chars */
41 num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0);
44 filename_w = av_mallocz(sizeof(wchar_t) * num_chars);
45 MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars);
47 fd = _wopen(filename_w, oflag, pmode);
48 av_freep(&filename_w);
50 /* filename maybe be in CP_ACP */
51 if (fd == -1 && !(oflag & O_CREAT))
52 return open(filename_utf8, oflag, pmode);
65 #elif HAVE_SYS_SELECT_H
66 #include <sys/select.h>
76 int ff_inet_aton (const char * str, struct in_addr * add)
78 unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0;
80 if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4)
83 if (!add1 || (add1|add2|add3|add4) > 255) return 0;
85 add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4);
90 int ff_inet_aton (const char * str, struct in_addr * add)
92 return inet_aton(str, add);
94 #endif /* !HAVE_INET_ATON */
97 int ff_getaddrinfo(const char *node, const char *service,
98 const struct addrinfo *hints, struct addrinfo **res)
100 struct hostent *h = NULL;
102 struct sockaddr_in *sin;
105 int (WSAAPI *win_getaddrinfo)(const char *node, const char *service,
106 const struct addrinfo *hints,
107 struct addrinfo **res);
108 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
109 win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo");
111 return win_getaddrinfo(node, service, hints, res);
115 sin = av_mallocz(sizeof(struct sockaddr_in));
118 sin->sin_family = AF_INET;
121 if (!ff_inet_aton(node, &sin->sin_addr)) {
122 if (hints && (hints->ai_flags & AI_NUMERICHOST)) {
126 h = gethostbyname(node);
131 memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr));
134 if (hints && (hints->ai_flags & AI_PASSIVE)) {
135 sin->sin_addr.s_addr = INADDR_ANY;
137 sin->sin_addr.s_addr = INADDR_LOOPBACK;
140 /* Note: getaddrinfo allows service to be a string, which
141 * should be looked up using getservbyname. */
143 sin->sin_port = htons(atoi(service));
145 ai = av_mallocz(sizeof(struct addrinfo));
152 ai->ai_family = AF_INET;
153 ai->ai_socktype = hints ? hints->ai_socktype : 0;
154 switch (ai->ai_socktype) {
155 case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break;
156 case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break;
157 default: ai->ai_protocol = 0; break;
160 ai->ai_addr = (struct sockaddr *)sin;
161 ai->ai_addrlen = sizeof(struct sockaddr_in);
162 if (hints && (hints->ai_flags & AI_CANONNAME))
163 ai->ai_canonname = h ? av_strdup(h->h_name) : NULL;
169 void ff_freeaddrinfo(struct addrinfo *res)
172 void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res);
173 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
174 win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res))
175 GetProcAddress(ws2mod, "freeaddrinfo");
176 if (win_freeaddrinfo) {
177 win_freeaddrinfo(res);
182 av_free(res->ai_canonname);
183 av_free(res->ai_addr);
187 int ff_getnameinfo(const struct sockaddr *sa, int salen,
188 char *host, int hostlen,
189 char *serv, int servlen, int flags)
191 const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
194 int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen,
195 char *host, DWORD hostlen,
196 char *serv, DWORD servlen, int flags);
197 HMODULE ws2mod = GetModuleHandle("ws2_32.dll");
198 win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo");
200 return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags);
203 if (sa->sa_family != AF_INET)
208 if (host && hostlen > 0) {
209 struct hostent *ent = NULL;
211 if (!(flags & NI_NUMERICHOST))
212 ent = gethostbyaddr((const char *)&sin->sin_addr,
213 sizeof(sin->sin_addr), AF_INET);
216 snprintf(host, hostlen, "%s", ent->h_name);
217 } else if (flags & NI_NAMERQD) {
220 a = ntohl(sin->sin_addr.s_addr);
221 snprintf(host, hostlen, "%d.%d.%d.%d",
222 ((a >> 24) & 0xff), ((a >> 16) & 0xff),
223 ((a >> 8) & 0xff), ( a & 0xff));
227 if (serv && servlen > 0) {
228 struct servent *ent = NULL;
229 if (!(flags & NI_NUMERICSERV))
230 ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp");
233 snprintf(serv, servlen, "%s", ent->s_name);
235 snprintf(serv, servlen, "%d", ntohs(sin->sin_port));
241 const char *ff_gai_strerror(int ecode)
244 case EAI_FAIL : return "A non-recoverable error occurred";
245 case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family";
246 case EAI_NONAME : return "The name does not resolve for the supplied parameters";
249 return "Unknown error";
253 int ff_socket_nonblock(int socket, int enable)
256 return ioctlsocket(socket, FIONBIO, &enable);
259 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK);
261 return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK);
266 int poll(struct pollfd *fds, nfds_t numfds, int timeout)
270 fd_set exception_set;
276 if (numfds >= FD_SETSIZE) {
284 FD_ZERO(&exception_set);
287 for(i = 0; i < numfds; i++) {
291 if (fds[i].fd >= FD_SETSIZE) {
297 if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set);
298 if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set);
299 if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set);
306 /* Hey!? Nothing to poll, in fact!!! */
310 rc = select(n+1, &read_set, &write_set, &exception_set, NULL);
314 tv.tv_sec = timeout / 1000;
315 tv.tv_usec = 1000 * (timeout % 1000);
316 rc = select(n+1, &read_set, &write_set, &exception_set, &tv);
322 for(i = 0; i < numfds; i++) {
325 if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN;
326 if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT;
327 if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR;
332 #endif /* HAVE_POLL_H */
333 #endif /* CONFIG_NETWORK */