replace the uses of old string functions that Reimar missed
[libav.git] / libavformat / file.c
1 /*
2 * Buffered file io for ffmpeg system
3 * Copyright (c) 2001 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 #include "avformat.h"
22 #include "avstring.h"
23 #include <fcntl.h>
24 #include <unistd.h>
25 #include <sys/time.h>
26
27
28 /* standard file protocol */
29
30 static int file_open(URLContext *h, const char *filename, int flags)
31 {
32 int access;
33 int fd;
34
35 av_strstart(filename, "file:", &filename);
36
37 if (flags & URL_RDWR) {
38 access = O_CREAT | O_TRUNC | O_RDWR;
39 } else if (flags & URL_WRONLY) {
40 access = O_CREAT | O_TRUNC | O_WRONLY;
41 } else {
42 access = O_RDONLY;
43 }
44 #if defined(__MINGW32__) || defined(CONFIG_OS2) || defined(__CYGWIN__)
45 access |= O_BINARY;
46 #endif
47 fd = open(filename, access, 0666);
48 if (fd < 0)
49 return AVERROR(ENOENT);
50 h->priv_data = (void *)(size_t)fd;
51 return 0;
52 }
53
54 static int file_read(URLContext *h, unsigned char *buf, int size)
55 {
56 int fd = (size_t)h->priv_data;
57 return read(fd, buf, size);
58 }
59
60 static int file_write(URLContext *h, unsigned char *buf, int size)
61 {
62 int fd = (size_t)h->priv_data;
63 return write(fd, buf, size);
64 }
65
66 /* XXX: use llseek */
67 static offset_t file_seek(URLContext *h, offset_t pos, int whence)
68 {
69 int fd = (size_t)h->priv_data;
70 return lseek(fd, pos, whence);
71 }
72
73 static int file_close(URLContext *h)
74 {
75 int fd = (size_t)h->priv_data;
76 return close(fd);
77 }
78
79 URLProtocol file_protocol = {
80 "file",
81 file_open,
82 file_read,
83 file_write,
84 file_seek,
85 file_close,
86 };
87
88 /* pipe protocol */
89
90 static int pipe_open(URLContext *h, const char *filename, int flags)
91 {
92 int fd;
93
94 if (flags & URL_WRONLY) {
95 fd = 1;
96 } else {
97 fd = 0;
98 }
99 #if defined(__MINGW32__) || defined(CONFIG_OS2) || defined(__CYGWIN__)
100 setmode(fd, O_BINARY);
101 #endif
102 h->priv_data = (void *)(size_t)fd;
103 h->is_streamed = 1;
104 return 0;
105 }
106
107 static int pipe_read(URLContext *h, unsigned char *buf, int size)
108 {
109 int fd = (size_t)h->priv_data;
110 return read(fd, buf, size);
111 }
112
113 static int pipe_write(URLContext *h, unsigned char *buf, int size)
114 {
115 int fd = (size_t)h->priv_data;
116 return write(fd, buf, size);
117 }
118
119 static int pipe_close(URLContext *h)
120 {
121 return 0;
122 }
123
124 URLProtocol pipe_protocol = {
125 "pipe",
126 pipe_open,
127 pipe_read,
128 pipe_write,
129 NULL,
130 pipe_close,
131 };