os_support.h
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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 Libav.
6  *
7  * Libav 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  * Libav 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 Libav; 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 
30 #include "config.h"
31 
32 #if defined(__MINGW32__) && !defined(__MINGW32CE__)
33 # include <fcntl.h>
34 # define lseek(f,p,w) _lseeki64((f), (p), (w))
35 # define stat _stati64
36 # define fstat(f,s) _fstati64((f), (s))
37 #endif /* defined(__MINGW32__) && !defined(__MINGW32CE__) */
38 
39 static inline int is_dos_path(const char *path)
40 {
41 #if HAVE_DOS_PATHS
42  if (path[0] && path[1] == ':')
43  return 1;
44 #endif
45  return 0;
46 }
47 
48 #if defined(_WIN32) && !defined(__MINGW32CE__)
49 int ff_win32_open(const char *filename, int oflag, int pmode);
50 #define open ff_win32_open
51 #endif
52 
53 #if CONFIG_NETWORK
54 #if !HAVE_SOCKLEN_T
55 typedef int socklen_t;
56 #endif
57 
58 /* most of the time closing a socket is just closing an fd */
59 #if !HAVE_CLOSESOCKET
60 #define closesocket close
61 #endif
62 
63 #if !HAVE_POLL_H
64 typedef unsigned long nfds_t;
65 
66 struct pollfd {
67  int fd;
68  short events; /* events to look for */
69  short revents; /* events that occurred */
70 };
71 
72 /* events & revents */
73 #define POLLIN 0x0001 /* any readable data available */
74 #define POLLOUT 0x0002 /* file descriptor is writeable */
75 #define POLLRDNORM POLLIN
76 #define POLLWRNORM POLLOUT
77 #define POLLRDBAND 0x0008 /* priority readable data */
78 #define POLLWRBAND 0x0010 /* priority data can be written */
79 #define POLLPRI 0x0020 /* high priority readable data */
80 
81 /* revents only */
82 #define POLLERR 0x0004 /* errors pending */
83 #define POLLHUP 0x0080 /* disconnected */
84 #define POLLNVAL 0x1000 /* invalid file descriptor */
85 
86 
87 int poll(struct pollfd *fds, nfds_t numfds, int timeout);
88 #endif /* HAVE_POLL_H */
89 #endif /* CONFIG_NETWORK */
90 
91 #endif /* AVFORMAT_OS_SUPPORT_H */