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- /*
- * various OS-feature replacement utilities
- * copyright (c) 2000, 2001, 2002 Fabrice Bellard
- *
- * This file is part of Libav.
- *
- * Libav 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.
- *
- * Libav 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 Libav; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
- #ifndef AVFORMAT_OS_SUPPORT_H
- #define AVFORMAT_OS_SUPPORT_H
- /**
- * @file
- * miscellaneous OS support macros and functions.
- */
- #include "config.h"
- #include <sys/stat.h>
- #ifdef _WIN32
- #if HAVE_DIRECT_H
- #include <direct.h>
- #endif
- #if HAVE_IO_H
- #include <io.h>
- #endif
- #endif
- #if defined(_WIN32) && !defined(__MINGW32CE__)
- # include <fcntl.h>
- # undef lseek
- # define lseek(f,p,w) _lseeki64((f), (p), (w))
- # undef stat
- # define stat _stati64
- # undef fstat
- # define fstat(f,s) _fstati64((f), (s))
- #endif /* defined(_WIN32) && !defined(__MINGW32CE__) */
- static inline int is_dos_path(const char *path)
- {
- #if HAVE_DOS_PATHS
- if (path[0] && path[1] == ':')
- return 1;
- #endif
- return 0;
- }
- #if defined(__OS2__)
- #define SHUT_RD 0
- #define SHUT_WR 1
- #define SHUT_RDWR 2
- #endif
- #if defined(_WIN32)
- #define SHUT_RD SD_RECEIVE
- #define SHUT_WR SD_SEND
- #define SHUT_RDWR SD_BOTH
- #ifndef S_IRUSR
- #define S_IRUSR S_IREAD
- #endif
- #ifndef S_IWUSR
- #define S_IWUSR S_IWRITE
- #endif
- #endif
- #if CONFIG_NETWORK
- #if !HAVE_SOCKLEN_T
- typedef int socklen_t;
- #endif
- /* most of the time closing a socket is just closing an fd */
- #if !HAVE_CLOSESOCKET
- #define closesocket close
- #endif
- #if !HAVE_POLL_H
- typedef unsigned long nfds_t;
- #if HAVE_WINSOCK2_H
- #include <winsock2.h>
- #endif
- #if !HAVE_STRUCT_POLLFD
- struct pollfd {
- int fd;
- short events; /* events to look for */
- short revents; /* events that occurred */
- };
- /* events & revents */
- #define POLLIN 0x0001 /* any readable data available */
- #define POLLOUT 0x0002 /* file descriptor is writeable */
- #define POLLRDNORM POLLIN
- #define POLLWRNORM POLLOUT
- #define POLLRDBAND 0x0008 /* priority readable data */
- #define POLLWRBAND 0x0010 /* priority data can be written */
- #define POLLPRI 0x0020 /* high priority readable data */
- /* revents only */
- #define POLLERR 0x0004 /* errors pending */
- #define POLLHUP 0x0080 /* disconnected */
- #define POLLNVAL 0x1000 /* invalid file descriptor */
- #endif
- int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
- #define poll ff_poll
- #endif /* HAVE_POLL_H */
- #endif /* CONFIG_NETWORK */
- #if defined(__MINGW32CE__)
- #define mkdir(a, b) _mkdir(a)
- #elif defined(_WIN32)
- #include <stdio.h>
- #include <windows.h>
- #include "libavutil/wchar_filename.h"
- #ifdef WINAPI_FAMILY
- #include <winapifamily.h>
- // If a WINAPI_FAMILY is defined, check that the desktop API subset
- // is enabled
- #if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
- #define USE_MOVEFILEEXA
- #endif
- #else
- // If no WINAPI_FAMILY is defined, assume the full API subset
- #define USE_MOVEFILEEXA
- #endif
- #define DEF_FS_FUNCTION(name, wfunc, afunc) \
- static inline int win32_##name(const char *filename_utf8) \
- { \
- wchar_t *filename_w; \
- int ret; \
- \
- if (utf8towchar(filename_utf8, &filename_w)) \
- return -1; \
- if (!filename_w) \
- goto fallback; \
- \
- ret = wfunc(filename_w); \
- av_free(filename_w); \
- return ret; \
- \
- fallback: \
- /* filename may be be in CP_ACP */ \
- return afunc(filename_utf8); \
- }
- DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
- DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
- DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
- static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
- {
- wchar_t *src_w, *dest_w;
- int ret;
- if (utf8towchar(src_utf8, &src_w))
- return -1;
- if (utf8towchar(dest_utf8, &dest_w)) {
- av_free(src_w);
- return -1;
- }
- if (!src_w || !dest_w) {
- av_free(src_w);
- av_free(dest_w);
- goto fallback;
- }
- ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
- av_free(src_w);
- av_free(dest_w);
- // Lacking proper mapping from GetLastError() error codes to errno codes
- if (ret)
- errno = EPERM;
- return ret;
- fallback:
- /* filename may be be in CP_ACP */
- #ifdef USE_MOVEFILEEXA
- ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
- if (ret)
- errno = EPERM;
- #else
- /* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
- * it is available but not allowed by the app certification kit. However,
- * it's unlikely that anybody would input filenames in CP_ACP there, so this
- * fallback is kept mostly for completeness. Alternatively we could
- * do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
- * explicit conversions with CP_ACP is allegedly forbidden in windows
- * store apps (or windows phone), and the notion of a native code page
- * doesn't make much sense there. */
- ret = rename(src_utf8, dest_utf8);
- #endif
- return ret;
- }
- #define mkdir(a, b) win32_mkdir(a)
- #define rename win32_rename
- #define rmdir win32_rmdir
- #define unlink win32_unlink
- #endif
- #endif /* AVFORMAT_OS_SUPPORT_H */
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