diff options
Diffstat (limited to 'ffmpeg/libavformat/os_support.c')
| -rw-r--r-- | ffmpeg/libavformat/os_support.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/ffmpeg/libavformat/os_support.c b/ffmpeg/libavformat/os_support.c new file mode 100644 index 0000000..0a901f6 --- /dev/null +++ b/ffmpeg/libavformat/os_support.c @@ -0,0 +1,377 @@ +/* + * various OS-feature replacement utilities + * Copyright (c) 2000, 2001, 2002 Fabrice Bellard + * copyright (c) 2002 Francois Revol + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* needed by inet_aton() */ +#define _SVID_SOURCE + +#include "config.h" +#include "avformat.h" +#include "os_support.h" + +#if defined(_WIN32) && !defined(__MINGW32CE__) +#undef open +#undef lseek +#undef stat +#undef fstat +#include <fcntl.h> +#include <io.h> +#include <windows.h> +#include <share.h> + +int ff_win32_open(const char *filename_utf8, int oflag, int pmode) +{ + int fd; + int num_chars; + wchar_t *filename_w; + + /* convert UTF-8 to wide chars */ + num_chars = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, filename_utf8, -1, NULL, 0); + if (num_chars <= 0) + goto fallback; + filename_w = av_mallocz(sizeof(wchar_t) * num_chars); + if (!filename_w) + return -1; + MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars); + + fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode); + av_freep(&filename_w); + + if (fd != -1 || (oflag & O_CREAT)) + return fd; + +fallback: + /* filename maybe be in CP_ACP */ + return _sopen(filename_utf8, oflag, SH_DENYNO, pmode); +} +#endif + +#if CONFIG_NETWORK +#include <fcntl.h> +#if !HAVE_POLL_H +#if HAVE_SYS_TIME_H +#include <sys/time.h> +#endif +#if HAVE_WINSOCK2_H +#include <winsock2.h> +#elif HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif +#endif + +#include "network.h" + +#if !HAVE_INET_ATON +#include <stdlib.h> + +int ff_inet_aton(const char *str, struct in_addr *add) +{ + unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0; + + if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4) + return 0; + + if (!add1 || (add1 | add2 | add3 | add4) > 255) + return 0; + + add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4); + + return 1; +} +#else +int ff_inet_aton(const char *str, struct in_addr *add) +{ + return inet_aton(str, add); +} +#endif /* !HAVE_INET_ATON */ + +#if !HAVE_GETADDRINFO +int ff_getaddrinfo(const char *node, const char *service, + const struct addrinfo *hints, struct addrinfo **res) +{ + struct hostent *h = NULL; + struct addrinfo *ai; + struct sockaddr_in *sin; + +#if HAVE_WINSOCK2_H + int (WSAAPI *win_getaddrinfo)(const char *node, const char *service, + const struct addrinfo *hints, + struct addrinfo **res); + HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); + win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo"); + if (win_getaddrinfo) + return win_getaddrinfo(node, service, hints, res); +#endif + + *res = NULL; + sin = av_mallocz(sizeof(struct sockaddr_in)); + if (!sin) + return EAI_FAIL; + sin->sin_family = AF_INET; + + if (node) { + if (!ff_inet_aton(node, &sin->sin_addr)) { + if (hints && (hints->ai_flags & AI_NUMERICHOST)) { + av_free(sin); + return EAI_FAIL; + } + h = gethostbyname(node); + if (!h) { + av_free(sin); + return EAI_FAIL; + } + memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr)); + } + } else { + if (hints && (hints->ai_flags & AI_PASSIVE)) + sin->sin_addr.s_addr = INADDR_ANY; + else + sin->sin_addr.s_addr = INADDR_LOOPBACK; + } + + /* Note: getaddrinfo allows service to be a string, which + * should be looked up using getservbyname. */ + if (service) + sin->sin_port = htons(atoi(service)); + + ai = av_mallocz(sizeof(struct addrinfo)); + if (!ai) { + av_free(sin); + return EAI_FAIL; + } + + *res = ai; + ai->ai_family = AF_INET; + ai->ai_socktype = hints ? hints->ai_socktype : 0; + switch (ai->ai_socktype) { + case SOCK_STREAM: + ai->ai_protocol = IPPROTO_TCP; + break; + case SOCK_DGRAM: + ai->ai_protocol = IPPROTO_UDP; + break; + default: + ai->ai_protocol = 0; + break; + } + + ai->ai_addr = (struct sockaddr *)sin; + ai->ai_addrlen = sizeof(struct sockaddr_in); + if (hints && (hints->ai_flags & AI_CANONNAME)) + ai->ai_canonname = h ? av_strdup(h->h_name) : NULL; + + ai->ai_next = NULL; + return 0; +} + +void ff_freeaddrinfo(struct addrinfo *res) +{ +#if HAVE_WINSOCK2_H + void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res); + HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); + win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res)) + GetProcAddress(ws2mod, "freeaddrinfo"); + if (win_freeaddrinfo) { + win_freeaddrinfo(res); + return; + } +#endif + + av_free(res->ai_canonname); + av_free(res->ai_addr); + av_free(res); +} + +int ff_getnameinfo(const struct sockaddr *sa, int salen, + char *host, int hostlen, + char *serv, int servlen, int flags) +{ + const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; + +#if HAVE_WINSOCK2_H + int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen, + char *host, DWORD hostlen, + char *serv, DWORD servlen, int flags); + HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); + win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo"); + if (win_getnameinfo) + return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); +#endif + + if (sa->sa_family != AF_INET) + return EAI_FAMILY; + if (!host && !serv) + return EAI_NONAME; + + if (host && hostlen > 0) { + struct hostent *ent = NULL; + uint32_t a; + if (!(flags & NI_NUMERICHOST)) + ent = gethostbyaddr((const char *)&sin->sin_addr, + sizeof(sin->sin_addr), AF_INET); + + if (ent) { + snprintf(host, hostlen, "%s", ent->h_name); + } else if (flags & NI_NAMERQD) { + return EAI_NONAME; + } else { + a = ntohl(sin->sin_addr.s_addr); + snprintf(host, hostlen, "%d.%d.%d.%d", + ((a >> 24) & 0xff), ((a >> 16) & 0xff), + ((a >> 8) & 0xff), (a & 0xff)); + } + } + + if (serv && servlen > 0) { + struct servent *ent = NULL; +#if HAVE_GETSERVBYPORT + if (!(flags & NI_NUMERICSERV)) + ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp"); +#endif + + if (ent) + snprintf(serv, servlen, "%s", ent->s_name); + else + snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); + } + + return 0; +} +#endif /* !HAVE_GETADDRINFO */ + +#if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H +const char *ff_gai_strerror(int ecode) +{ + switch (ecode) { + case EAI_AGAIN: + return "Temporary failure in name resolution"; + case EAI_BADFLAGS: + return "Invalid flags for ai_flags"; + case EAI_FAIL: + return "A non-recoverable error occurred"; + case EAI_FAMILY: + return "The address family was not recognized or the address " + "length was invalid for the specified family"; + case EAI_MEMORY: + return "Memory allocation failure"; +#if EAI_NODATA != EAI_NONAME + case EAI_NODATA: + return "No address associated with hostname"; +#endif + case EAI_NONAME: + return "The name does not resolve for the supplied parameters"; + case EAI_SERVICE: + return "servname not supported for ai_socktype"; + case EAI_SOCKTYPE: + return "ai_socktype not supported"; + } + + return "Unknown error"; +} +#endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */ + +int ff_socket_nonblock(int socket, int enable) +{ +#if HAVE_WINSOCK2_H + u_long param = enable; + return ioctlsocket(socket, FIONBIO, ¶m); +#else + if (enable) + return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK); + else + return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK); +#endif +} + +#if !HAVE_POLL_H +int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout) +{ + fd_set read_set; + fd_set write_set; + fd_set exception_set; + nfds_t i; + int n; + int rc; + +#if HAVE_WINSOCK2_H + if (numfds >= FD_SETSIZE) { + errno = EINVAL; + return -1; + } +#endif + + FD_ZERO(&read_set); + FD_ZERO(&write_set); + FD_ZERO(&exception_set); + + n = 0; + for (i = 0; i < numfds; i++) { + if (fds[i].fd < 0) + continue; +#if !HAVE_WINSOCK2_H + if (fds[i].fd >= FD_SETSIZE) { + errno = EINVAL; + return -1; + } +#endif + + if (fds[i].events & POLLIN) + FD_SET(fds[i].fd, &read_set); + if (fds[i].events & POLLOUT) + FD_SET(fds[i].fd, &write_set); + if (fds[i].events & POLLERR) + FD_SET(fds[i].fd, &exception_set); + + if (fds[i].fd >= n) + n = fds[i].fd + 1; + } + + if (n == 0) + /* Hey!? Nothing to poll, in fact!!! */ + return 0; + + if (timeout < 0) { + rc = select(n, &read_set, &write_set, &exception_set, NULL); + } else { + struct timeval tv; + tv.tv_sec = timeout / 1000; + tv.tv_usec = 1000 * (timeout % 1000); + rc = select(n, &read_set, &write_set, &exception_set, &tv); + } + + if (rc < 0) + return rc; + + for (i = 0; i < numfds; i++) { + fds[i].revents = 0; + + if (FD_ISSET(fds[i].fd, &read_set)) + fds[i].revents |= POLLIN; + if (FD_ISSET(fds[i].fd, &write_set)) + fds[i].revents |= POLLOUT; + if (FD_ISSET(fds[i].fd, &exception_set)) + fds[i].revents |= POLLERR; + } + + return rc; +} +#endif /* HAVE_POLL_H */ +#endif /* CONFIG_NETWORK */ |