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  1. /*
  2.  * various OS-feature replacement utilities
  3.  * copyright (c) 2000, 2001, 2002 Fabrice Bellard
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  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.
  11.  *
  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.
  16.  *
  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
  20.  */
  21.  
  22. #ifndef AVFORMAT_OS_SUPPORT_H
  23. #define AVFORMAT_OS_SUPPORT_H
  24.  
  25. /**
  26.  * @file
  27.  * miscellaneous OS support macros and functions.
  28.  */
  29.  
  30. #include "config.h"
  31.  
  32. #include <sys/stat.h>
  33.  
  34. #if defined(_WIN32) && !defined(__MINGW32CE__)
  35. #  include <fcntl.h>
  36. #  ifdef lseek
  37. #   undef lseek
  38. #  endif
  39. #  define lseek(f,p,w) _lseeki64((f), (p), (w))
  40. #  ifdef stat
  41. #   undef stat
  42. #  endif
  43. #  define stat _stati64
  44. #  ifdef fstat
  45. #   undef fstat
  46. #  endif
  47. #  define fstat(f,s) _fstati64((f), (s))
  48. #endif /* defined(__MINGW32__) && !defined(__MINGW32CE__) */
  49.  
  50. #ifdef _WIN32
  51. #if HAVE_DIRECT_H
  52. #include <direct.h>
  53. #elif HAVE_IO_H
  54. #include <io.h>
  55. #endif
  56. #define mkdir(a, b) _mkdir(a)
  57. #endif
  58.  
  59. static inline int is_dos_path(const char *path)
  60. {
  61. #if HAVE_DOS_PATHS
  62.     if (path[0] && path[1] == ':')
  63.         return 1;
  64. #endif
  65.     return 0;
  66. }
  67.  
  68. #if defined(__OS2__) || defined(__Plan9__)
  69. #define SHUT_RD 0
  70. #define SHUT_WR 1
  71. #define SHUT_RDWR 2
  72. #endif
  73.  
  74. #if defined(_WIN32)
  75. #define SHUT_RD SD_RECEIVE
  76. #define SHUT_WR SD_SEND
  77. #define SHUT_RDWR SD_BOTH
  78.  
  79. #ifndef S_IRUSR
  80. #define S_IRUSR S_IREAD
  81. #endif
  82. #ifndef S_IWUSR
  83. #define S_IWUSR S_IWRITE
  84. #endif
  85. #endif
  86.  
  87. #if CONFIG_NETWORK
  88. #if !HAVE_SOCKLEN_T
  89. typedef int socklen_t;
  90. #endif
  91.  
  92. /* most of the time closing a socket is just closing an fd */
  93. #if !HAVE_CLOSESOCKET
  94. #define closesocket close
  95. #endif
  96.  
  97. #if !HAVE_POLL_H
  98. typedef unsigned long nfds_t;
  99.  
  100. #if HAVE_WINSOCK2_H
  101. #include <winsock2.h>
  102. #endif
  103. #if !HAVE_STRUCT_POLLFD
  104. struct pollfd {
  105.     int fd;
  106.     short events;  /* events to look for */
  107.     short revents; /* events that occurred */
  108. };
  109.  
  110. /* events & revents */
  111. #define POLLIN     0x0001  /* any readable data available */
  112. #define POLLOUT    0x0002  /* file descriptor is writeable */
  113. #define POLLRDNORM POLLIN
  114. #define POLLWRNORM POLLOUT
  115. #define POLLRDBAND 0x0008  /* priority readable data */
  116. #define POLLWRBAND 0x0010  /* priority data can be written */
  117. #define POLLPRI    0x0020  /* high priority readable data */
  118.  
  119. /* revents only */
  120. #define POLLERR    0x0004  /* errors pending */
  121. #define POLLHUP    0x0080  /* disconnected */
  122. #define POLLNVAL   0x1000  /* invalid file descriptor */
  123. #endif
  124.  
  125.  
  126. int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
  127. #define poll ff_poll
  128. #endif /* HAVE_POLL_H */
  129. #endif /* CONFIG_NETWORK */
  130.  
  131. #endif /* AVFORMAT_OS_SUPPORT_H */
  132.