moved matrix init away from MPV_common_init()
[libav.git] / libav / file.c
CommitLineData
de6d9b64
FB
1/*
2 * Buffered file io for ffmpeg system
3 * Copyright (c) 2001 Gerard Lantau
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19#include <stdlib.h>
20#include <stdio.h>
21#include <unistd.h>
22#include <fcntl.h>
23#include <sys/ioctl.h>
24#include <errno.h>
25#include <sys/time.h>
26
27#include "avformat.h"
28
29/* standard file protocol */
30
31static int file_open(URLContext *h, const char *filename, int flags)
32{
33 int access;
34 int fd;
35
36 if (flags & URL_WRONLY) {
37 access = O_CREAT | O_TRUNC | O_WRONLY;
38 } else {
39 access = O_RDONLY;
40 }
41 fd = open(filename, access, 0666);
42 if (fd < 0)
43 return -ENOENT;
44 h->priv_data = (void *)fd;
45 return 0;
46}
47
48static int file_read(URLContext *h, unsigned char *buf, int size)
49{
50 int fd = (int)h->priv_data;
51 return read(fd, buf, size);
52}
53
54static int file_write(URLContext *h, unsigned char *buf, int size)
55{
56 int fd = (int)h->priv_data;
57 return write(fd, buf, size);
58}
59
60/* XXX: use llseek */
61static offset_t file_seek(URLContext *h, offset_t pos, int whence)
62{
63 int fd = (int)h->priv_data;
64 return lseek(fd, pos, whence);
65}
66
67static int file_close(URLContext *h)
68{
69 int fd = (int)h->priv_data;
70 return close(fd);
71}
72
73URLProtocol file_protocol = {
74 "file",
75 file_open,
76 file_read,
77 file_write,
78 file_seek,
79 file_close,
80};
81
82/* pipe protocol */
83
84static int pipe_open(URLContext *h, const char *filename, int flags)
85{
86 int fd;
87
88 if (flags & URL_WRONLY) {
89 fd = 1;
90 } else {
91 fd = 0;
92 }
93 h->priv_data = (void *)fd;
94 return 0;
95}
96
97static int pipe_read(URLContext *h, unsigned char *buf, int size)
98{
99 int fd = (int)h->priv_data;
100 return read(fd, buf, size);
101}
102
103static int pipe_write(URLContext *h, unsigned char *buf, int size)
104{
105 int fd = (int)h->priv_data;
106 return write(fd, buf, size);
107}
108
109static int pipe_close(URLContext *h)
110{
111 return 0;
112}
113
114URLProtocol pipe_protocol = {
115 "pipe",
116 pipe_open,
117 pipe_read,
118 pipe_write,
119 NULL,
120 pipe_close,
121};