FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
os_support.h
Go to the documentation of this file.
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 #else
58 #include <sys/stat.h>
59 #endif
60 
61 static inline int is_dos_path(const char *path)
62 {
63 #if HAVE_DOS_PATHS
64  if (path[0] && path[1] == ':')
65  return 1;
66 #endif
67  return 0;
68 }
69 
70 #if defined(__OS2__) || defined(__Plan9__)
71 #define SHUT_RD 0
72 #define SHUT_WR 1
73 #define SHUT_RDWR 2
74 #endif
75 
76 #if defined(_WIN32)
77 #define SHUT_RD SD_RECEIVE
78 #define SHUT_WR SD_SEND
79 #define SHUT_RDWR SD_BOTH
80 
81 #ifndef S_IRUSR
82 #define S_IRUSR S_IREAD
83 #endif
84 #ifndef S_IWUSR
85 #define S_IWUSR S_IWRITE
86 #endif
87 #endif
88 
89 #if defined(_WIN32) && !defined(__MINGW32CE__)
90 int ff_win32_open(const char *filename, int oflag, int pmode);
91 #define open ff_win32_open
92 #endif
93 
94 #if CONFIG_NETWORK
95 #if !HAVE_SOCKLEN_T
96 typedef int socklen_t;
97 #endif
98 
99 /* most of the time closing a socket is just closing an fd */
100 #if !HAVE_CLOSESOCKET
101 #define closesocket close
102 #endif
103 
104 #if !HAVE_POLL_H
105 typedef unsigned long nfds_t;
106 
107 #if HAVE_WINSOCK2_H
108 #include <winsock2.h>
109 #endif
110 #if !HAVE_STRUCT_POLLFD
111 struct pollfd {
112  int fd;
113  short events; /* events to look for */
114  short revents; /* events that occurred */
115 };
116 
117 /* events & revents */
118 #define POLLIN 0x0001 /* any readable data available */
119 #define POLLOUT 0x0002 /* file descriptor is writeable */
120 #define POLLRDNORM POLLIN
121 #define POLLWRNORM POLLOUT
122 #define POLLRDBAND 0x0008 /* priority readable data */
123 #define POLLWRBAND 0x0010 /* priority data can be written */
124 #define POLLPRI 0x0020 /* high priority readable data */
125 
126 /* revents only */
127 #define POLLERR 0x0004 /* errors pending */
128 #define POLLHUP 0x0080 /* disconnected */
129 #define POLLNVAL 0x1000 /* invalid file descriptor */
130 #endif
131 
132 
133 int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout);
134 #define poll ff_poll
135 #endif /* HAVE_POLL_H */
136 #endif /* CONFIG_NETWORK */
137 
138 #endif /* AVFORMAT_OS_SUPPORT_H */