early-access version 1432
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pineappleEA
250
externals/ffmpeg/libavformat/os_support.h
vendored
Executable file
250
externals/ffmpeg/libavformat/os_support.h
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/*
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* various OS-feature replacement utilities
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* copyright (c) 2000, 2001, 2002 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_OS_SUPPORT_H
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#define AVFORMAT_OS_SUPPORT_H
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/**
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* @file
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* miscellaneous OS support macros and functions.
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*/
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#include "config.h"
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#include <sys/stat.h>
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#ifdef _WIN32
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#if HAVE_DIRECT_H
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#include <direct.h>
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#endif
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#if HAVE_IO_H
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#include <io.h>
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#endif
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#endif
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#ifdef _WIN32
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# include <fcntl.h>
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# ifdef lseek
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# undef lseek
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# endif
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# define lseek(f,p,w) _lseeki64((f), (p), (w))
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# ifdef stat
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# undef stat
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# endif
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# define stat _stati64
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# ifdef fstat
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# undef fstat
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# endif
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# define fstat(f,s) _fstati64((f), (s))
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#endif /* defined(_WIN32) */
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#ifdef __ANDROID__
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# if HAVE_UNISTD_H
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# include <unistd.h>
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# endif
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# ifdef lseek
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# undef lseek
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# endif
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# define lseek(f,p,w) lseek64((f), (p), (w))
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#endif
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static inline int is_dos_path(const char *path)
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{
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#if HAVE_DOS_PATHS
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if (path[0] && path[1] == ':')
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return 1;
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#endif
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return 0;
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}
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#if defined(_WIN32)
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#ifndef S_IRUSR
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#define S_IRUSR S_IREAD
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#endif
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#ifndef S_IWUSR
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#define S_IWUSR S_IWRITE
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#endif
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#endif
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#if CONFIG_NETWORK
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#if defined(_WIN32)
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#define SHUT_RD SD_RECEIVE
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#define SHUT_WR SD_SEND
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#define SHUT_RDWR SD_BOTH
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#else
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#include <sys/socket.h>
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#if !defined(SHUT_RD) /* OS/2, DJGPP */
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#define SHUT_RD 0
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#define SHUT_WR 1
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#define SHUT_RDWR 2
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#endif
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#endif
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#if !HAVE_SOCKLEN_T
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typedef int socklen_t;
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#endif
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/* most of the time closing a socket is just closing an fd */
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#if !HAVE_CLOSESOCKET
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#define closesocket close
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#endif
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#if !HAVE_POLL_H
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typedef unsigned long nfds_t;
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#if HAVE_WINSOCK2_H
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#include <winsock2.h>
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#endif
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#if !HAVE_STRUCT_POLLFD
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struct pollfd {
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int fd;
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short events; /* events to look for */
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short revents; /* events that occurred */
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};
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/* events & revents */
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#define POLLIN 0x0001 /* any readable data available */
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#define POLLOUT 0x0002 /* file descriptor is writeable */
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#define POLLRDNORM POLLIN
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#define POLLWRNORM POLLOUT
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#define POLLRDBAND 0x0008 /* priority readable data */
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#define POLLWRBAND 0x0010 /* priority data can be written */
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#define POLLPRI 0x0020 /* high priority readable data */
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/* revents only */
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#define POLLERR 0x0004 /* errors pending */
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#define POLLHUP 0x0080 /* disconnected */
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#define POLLNVAL 0x1000 /* invalid file descriptor */
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#endif
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int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
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#define poll ff_poll
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#endif /* HAVE_POLL_H */
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#endif /* CONFIG_NETWORK */
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#ifdef _WIN32
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#include <stdio.h>
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#include <windows.h>
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#include "libavutil/wchar_filename.h"
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#define DEF_FS_FUNCTION(name, wfunc, afunc) \
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static inline int win32_##name(const char *filename_utf8) \
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{ \
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wchar_t *filename_w; \
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int ret; \
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\
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if (utf8towchar(filename_utf8, &filename_w)) \
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return -1; \
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if (!filename_w) \
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goto fallback; \
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\
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ret = wfunc(filename_w); \
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av_free(filename_w); \
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return ret; \
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\
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fallback: \
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/* filename may be be in CP_ACP */ \
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return afunc(filename_utf8); \
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}
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DEF_FS_FUNCTION(unlink, _wunlink, _unlink)
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DEF_FS_FUNCTION(mkdir, _wmkdir, _mkdir)
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DEF_FS_FUNCTION(rmdir, _wrmdir , _rmdir)
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#define DEF_FS_FUNCTION2(name, wfunc, afunc, partype) \
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static inline int win32_##name(const char *filename_utf8, partype par) \
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{ \
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wchar_t *filename_w; \
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int ret; \
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\
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if (utf8towchar(filename_utf8, &filename_w)) \
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return -1; \
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if (!filename_w) \
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goto fallback; \
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\
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ret = wfunc(filename_w, par); \
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av_free(filename_w); \
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return ret; \
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\
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fallback: \
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/* filename may be be in CP_ACP */ \
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return afunc(filename_utf8, par); \
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}
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DEF_FS_FUNCTION2(access, _waccess, _access, int)
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DEF_FS_FUNCTION2(stat, _wstati64, _stati64, struct stat*)
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static inline int win32_rename(const char *src_utf8, const char *dest_utf8)
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{
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wchar_t *src_w, *dest_w;
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int ret;
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if (utf8towchar(src_utf8, &src_w))
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return -1;
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if (utf8towchar(dest_utf8, &dest_w)) {
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av_free(src_w);
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return -1;
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}
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if (!src_w || !dest_w) {
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av_free(src_w);
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av_free(dest_w);
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goto fallback;
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}
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ret = MoveFileExW(src_w, dest_w, MOVEFILE_REPLACE_EXISTING);
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av_free(src_w);
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av_free(dest_w);
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// Lacking proper mapping from GetLastError() error codes to errno codes
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if (ret)
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errno = EPERM;
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return ret;
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fallback:
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/* filename may be be in CP_ACP */
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#if !HAVE_UWP
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ret = MoveFileExA(src_utf8, dest_utf8, MOVEFILE_REPLACE_EXISTING);
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if (ret)
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errno = EPERM;
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#else
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/* Windows Phone doesn't have MoveFileExA, and for Windows Store apps,
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* it is available but not allowed by the app certification kit. However,
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* it's unlikely that anybody would input filenames in CP_ACP there, so this
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* fallback is kept mostly for completeness. Alternatively we could
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* do MultiByteToWideChar(CP_ACP) and use MoveFileExW, but doing
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* explicit conversions with CP_ACP is allegedly forbidden in windows
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* store apps (or windows phone), and the notion of a native code page
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* doesn't make much sense there. */
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ret = rename(src_utf8, dest_utf8);
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#endif
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return ret;
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}
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#define mkdir(a, b) win32_mkdir(a)
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#define rename win32_rename
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#define rmdir win32_rmdir
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#define unlink win32_unlink
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#define access win32_access
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#endif
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#endif /* AVFORMAT_OS_SUPPORT_H */
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