1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/*
* Buffered file io for ffmpeg system
* Copyright (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avstring.h"
#include "avformat.h"
#include <fcntl.h>
#ifdef HAVE_SETMODE
#include <io.h>
#endif
#include <unistd.h>
#include <sys/time.h>
#include <stdlib.h>
#include "os_support.h"
/* standard file protocol */
static int file_open(URLContext *h, const char *filename, int flags)
{
int access;
int fd;
av_strstart(filename, "file:", &filename);
if (flags & URL_RDWR) {
access = O_CREAT | O_TRUNC | O_RDWR;
} else if (flags & URL_WRONLY) {
access = O_CREAT | O_TRUNC | O_WRONLY;
} else {
access = O_RDONLY;
}
#ifdef O_BINARY
access |= O_BINARY;
#endif
fd = open(filename, access, 0666);
if (fd < 0)
return AVERROR(ENOENT);
h->priv_data = (void *)(size_t)fd;
return 0;
}
static int file_read(URLContext *h, unsigned char *buf, int size)
{
int fd = (size_t)h->priv_data;
return read(fd, buf, size);
}
static int file_write(URLContext *h, unsigned char *buf, int size)
{
int fd = (size_t)h->priv_data;
return write(fd, buf, size);
}
/* XXX: use llseek */
static int64_t file_seek(URLContext *h, int64_t pos, int whence)
{
int fd = (size_t)h->priv_data;
return lseek(fd, pos, whence);
}
static int file_close(URLContext *h)
{
int fd = (size_t)h->priv_data;
return close(fd);
}
URLProtocol file_protocol = {
"file",
file_open,
file_read,
file_write,
file_seek,
file_close,
};
/* pipe protocol */
static int pipe_open(URLContext *h, const char *filename, int flags)
{
int fd;
char *final;
av_strstart(filename, "pipe:", &filename);
fd = strtol(filename, &final, 10);
if((filename == final) || *final ) {/* No digits found, or something like 10ab */
if (flags & URL_WRONLY) {
fd = 1;
} else {
fd = 0;
}
}
#ifdef HAVE_SETMODE
setmode(fd, O_BINARY);
#endif
h->priv_data = (void *)(size_t)fd;
h->is_streamed = 1;
return 0;
}
URLProtocol pipe_protocol = {
"pipe",
pipe_open,
file_read,
file_write,
};
|
