Add FFMPEG_ prefix to all multiple inclusion guards.
[libav.git] / 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 FFMPEG_OS_SUPPORT_H
23 #define FFMPEG_OS_SUPPORT_H
24
25 /**
26 * @file os_support.h
27 * miscellaneous OS support macros and functions.
28 *
29 * - socklen_t typedef (BeOS, Innotek libc)
30 * - usleep() (Win32, BeOS)
31 * - lseek() (Win32)
32 * - closesocket()
33 * - poll() (BeOS, MinGW)
34 */
35
36 #if defined(__BEOS__) || defined(__INNOTEK_LIBC__)
37 typedef int socklen_t;
38 #endif
39
40 #ifdef __MINGW32__
41 __declspec(dllimport) void __stdcall Sleep(unsigned long dwMilliseconds);
42 // # include <windows.h>
43 # define usleep(t) Sleep((t) / 1000)
44 # include <fcntl.h>
45 # define lseek(f,p,w) _lseeki64((f), (p), (w))
46 #endif
47
48 #ifdef __BEOS__
49 # include <sys/socket.h>
50 # include <netinet/in.h>
51 /* not net_server ? */
52 # include <BeBuild.h>
53 /* R5 didn't have usleep, fake it. Haiku and Zeta has it now. */
54 # if B_BEOS_VERSION <= B_BEOS_VERSION_5
55 # include <OS.h>
56 /* doesn't set errno but that's enough */
57 # define usleep(t) snooze((bigtime_t)(t))
58 # endif
59 # ifndef SA_RESTART
60 # warning SA_RESTART not implemented; ffserver might misbehave.
61 # define SA_RESTART 0
62 # endif
63 #endif
64
65 /* most of the time closing a socket is just closing an fd */
66 #ifndef HAVE_CLOSESOCKET
67 #define closesocket close
68 #endif
69
70 #ifdef CONFIG_FFSERVER
71 #ifndef HAVE_SYS_POLL_H
72 typedef unsigned long nfds_t;
73
74 struct pollfd {
75 int fd;
76 short events; /* events to look for */
77 short revents; /* events that occured */
78 };
79
80 /* events & revents */
81 #define POLLIN 0x0001 /* any readable data available */
82 #define POLLOUT 0x0002 /* file descriptor is writeable */
83 #define POLLRDNORM POLLIN
84 #define POLLWRNORM POLLOUT
85 #define POLLRDBAND 0x0008 /* priority readable data */
86 #define POLLWRBAND 0x0010 /* priority data can be written */
87 #define POLLPRI 0x0020 /* high priority readable data */
88
89 /* revents only */
90 #define POLLERR 0x0004 /* errors pending */
91 #define POLLHUP 0x0080 /* disconnected */
92 #define POLLNVAL 0x1000 /* invalid file descriptor */
93
94
95 extern int poll(struct pollfd *fds, nfds_t numfds, int timeout);
96 #endif /* HAVE_SYS_POLL_H */
97 #endif /* CONFIG_FFSERVER */
98
99 #endif /* FFMPEG_OS_SUPPORT_H */