2 * various OS-feature replacement utilities
3 * copyright (c) 2000, 2001, 2002 Fabrice Bellard
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
22 #ifndef AVFORMAT_OS_SUPPORT_H
23 #define AVFORMAT_OS_SUPPORT_H
27 * miscellaneous OS support macros and functions.
48 # define lseek(f,p,w) _lseeki64((f), (p), (w))
53 # define stat win32_stat
56 * The POSIX definition for the stat() function uses a struct of the
57 * same name (struct stat), that why it takes this extra effort for
58 * redirecting/replacing the stat() function with our own one which
59 * is capable to handle long path names on Windows.
60 * The struct below roughly follows the POSIX definition. Time values
61 * are 64bit, but in cases when _USE_32BIT_TIME_T is defined, they
62 * will be set to values no larger than INT32_MAX which corresponds
63 * to file times up to the year 2038.
67 _dev_t st_dev; /* ID of device containing file */
68 _ino_t st_ino; /* inode number */
69 unsigned short st_mode; /* protection */
70 short st_nlink; /* number of hard links */
71 short st_uid; /* user ID of owner */
72 short st_gid; /* group ID of owner */
73 _dev_t st_rdev; /* device ID (if special file) */
74 int64_t st_size; /* total size, in bytes */
75 int64_t st_atime; /* time of last access */
76 int64_t st_mtime; /* time of last modification */
77 int64_t st_ctime; /* time of last status change */
83 # define fstat win32_fstat
84 #endif /* defined(_WIN32) */
94 # define lseek(f,p,w) lseek64((f), (p), (w))
97 static inline int is_dos_path(const char *path)
100 if (path[0] && path[1] == ':')
108 #define S_IRUSR S_IREAD
111 #define S_IWUSR S_IWRITE
117 #define SHUT_RD SD_RECEIVE
118 #define SHUT_WR SD_SEND
119 #define SHUT_RDWR SD_BOTH
121 #include <sys/socket.h>
122 #if !defined(SHUT_RD) /* OS/2, DJGPP */
130 typedef int socklen_t;
133 /* most of the time closing a socket is just closing an fd */
134 #if !HAVE_CLOSESOCKET
135 #define closesocket close
139 typedef unsigned long nfds_t;
142 #include <winsock2.h>
144 #if !HAVE_STRUCT_POLLFD
147 short events; /* events to look for */
148 short revents; /* events that occurred */
151 /* events & revents */
152 #define POLLIN 0x0001 /* any readable data available */
153 #define POLLOUT 0x0002 /* file descriptor is writeable */
154 #define POLLRDNORM POLLIN
155 #define POLLWRNORM POLLOUT
156 #define POLLRDBAND 0x0008 /* priority readable data */
157 #define POLLWRBAND 0x0010 /* priority data can be written */
158 #define POLLPRI 0x0020 /* high priority readable data */
161 #define POLLERR 0x0004 /* errors pending */
162 #define POLLHUP 0x0080 /* disconnected */
163 #define POLLNVAL 0x1000 /* invalid file descriptor */
167 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
169 #endif /* HAVE_POLL_H */
170 #endif /* CONFIG_NETWORK */
175 #include "libavutil/wchar_filename.h"
177 #define DEF_FS_FUNCTION(name, wfunc, afunc) \
178 static inline int win32_##name(const char *filename_utf8) \
180 wchar_t *filename_w; \
183 if (get_extended_win32_path(filename_utf8, &filename_w)) \
188 ret = wfunc(filename_w); \
189 av_free(filename_w); \
193 /* filename may be be in CP_ACP */ \
194 return afunc(filename_utf8); \
197 DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
198 DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
199 DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
201 static inline int win32_access(const char *filename_utf8, int mode)
205 if (get_extended_win32_path(filename_utf8, &filename_w))
209 ret = _waccess(filename_w, mode);
213 return _access(filename_utf8, mode);
216 static inline void copy_stat(struct _stat64 *crtstat, struct win32_stat *buf)
218 buf->st_dev = crtstat->st_dev;
219 buf->st_ino = crtstat->st_ino;
220 buf->st_mode = crtstat->st_mode;
221 buf->st_nlink = crtstat->st_nlink;
222 buf->st_uid = crtstat->st_uid;
223 buf->st_gid = crtstat->st_gid;
224 buf->st_rdev = crtstat->st_rdev;
225 buf->st_size = crtstat->st_size;
226 buf->st_atime = crtstat->st_atime;
227 buf->st_mtime = crtstat->st_mtime;
228 buf->st_ctime = crtstat->st_ctime;
231 static inline int win32_stat(const char *filename_utf8, struct win32_stat *buf)
233 struct _stat64 crtstat = { 0 };
237 if (get_extended_win32_path(filename_utf8, &filename_w))
241 ret = _wstat64(filename_w, &crtstat);
244 ret = _stat64(filename_utf8, &crtstat);
246 copy_stat(&crtstat, buf);
251 static inline int win32_fstat(int fd, struct win32_stat *buf)
253 struct _stat64 crtstat = { 0 };
256 ret = _fstat64(fd, &crtstat);
258 copy_stat(&crtstat, buf);
263 static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
265 wchar_t *src_w, *dest_w;
268 if (get_extended_win32_path(src_utf8, &src_w))
270 if (get_extended_win32_path(dest_utf8, &dest_w)) {
274 if (!src_w || !dest_w) {
280 ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
283 // Lacking proper mapping from GetLastError() error codes to errno codes
289 /* filename may be be in CP_ACP */
291 ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
295 /* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
296 * it is available but not allowed by the app certification kit. However,
297 * it's unlikely that anybody would input filenames in CP_ACP there, so this
298 * fallback is kept mostly for completeness. Alternatively we could
299 * do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
300 * explicit conversions with CP_ACP is allegedly forbidden in windows
301 * store apps (or windows phone), and the notion of a native code page
302 * doesn't make much sense there. */
303 ret = rename(src_utf8, dest_utf8);
308 #define mkdir(a, b) win32_mkdir(a)
309 #define rename win32_rename
310 #define rmdir win32_rmdir
311 #define unlink win32_unlink
312 #define access win32_access
316 #endif /* AVFORMAT_OS_SUPPORT_H */