libavformat/os_support.h

   1 /*
   2  * various utilities for ffmpeg system
   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 os_support.h
  27  * miscellaneous OS support macros and functions.
  28  */
  29
  30 #ifdef __MINGW32__
  31 #  include <fcntl.h>
  32 #  define lseek(f,p,w) _lseeki64((f), (p), (w))
  33 #endif
  34
  35 static inline int is_dos_path(const char *path)
  36 {
  37 #if HAVE_DOS_PATHS
  38     if (path[0] && path[1] == ':')
  39         return 1;
  40 #endif
  41     return 0;
  42 }
  43
  44 #ifdef __BEOS__
  45 #  include <sys/socket.h>
  46 #  include <netinet/in.h>
  47    /* not net_server ? */
  48 #  include <BeBuild.h>
  49    /* R5 didn't have usleep, fake it. Haiku and Zeta has it now. */
  50 #  if B_BEOS_VERSION <= B_BEOS_VERSION_5
  51 #    include <OS.h>
  52      /* doesn't set errno but that's enough */
  53 #    define usleep(t)  snooze((bigtime_t)(t))
  54 #  endif
  55 #  ifndef SA_RESTART
  56 #    warning SA_RESTART not implemented; ffserver might misbehave.
  57 #    define SA_RESTART 0
  58 #  endif
  59 #endif
  60
  61 #if CONFIG_NETWORK
  62 #if !HAVE_SOCKLEN_T
  63 typedef int socklen_t;
  64 #endif
  65
  66 /* most of the time closing a socket is just closing an fd */
  67 #if !HAVE_CLOSESOCKET
  68 #define closesocket close
  69 #endif
  70
  71 #if CONFIG_FFSERVER
  72 #if !HAVE_POLL_H
  73 typedef unsigned long nfds_t;
  74
  75 struct pollfd {
  76     int fd;
  77     short events;  /* events to look for */
  78     short revents; /* events that occurred */
  79 };
  80
  81 /* events & revents */
  82 #define POLLIN     0x0001  /* any readable data available */
  83 #define POLLOUT    0x0002  /* file descriptor is writeable */
  84 #define POLLRDNORM POLLIN
  85 #define POLLWRNORM POLLOUT
  86 #define POLLRDBAND 0x0008  /* priority readable data */
  87 #define POLLWRBAND 0x0010  /* priority data can be written */
  88 #define POLLPRI    0x0020  /* high priority readable data */
  89
  90 /* revents only */
  91 #define POLLERR    0x0004  /* errors pending */
  92 #define POLLHUP    0x0080  /* disconnected */
  93 #define POLLNVAL   0x1000  /* invalid file descriptor */
  94
  95
  96 int poll(struct pollfd *fds, nfds_t numfds, int timeout);
  97 #endif /* HAVE_POLL_H */
  98 #endif /* CONFIG_FFSERVER */
  99 #endif /* CONFIG_NETWORK */
 100
 101 #endif /* AVFORMAT_OS_SUPPORT_H */