2 * Buffered file io for ffmpeg system
3 * Copyright (c) 2001 Fabrice Bellard
5 * This file is part of FFmpeg.
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.
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.
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
22 #include "libavutil/avstring.h"
28 #include "os_support.h"
31 /* standard file protocol */
33 static int file_open(URLContext *h, const char *filename, int flags)
38 av_strstart(filename, "file:", &filename);
40 if (flags & URL_RDWR) {
41 access = O_CREAT | O_TRUNC | O_RDWR;
42 } else if (flags & URL_WRONLY) {
43 access = O_CREAT | O_TRUNC | O_WRONLY;
50 fd = open(filename, access, 0666);
52 return AVERROR(ENOENT);
53 h->priv_data = (void *)(size_t)fd;
57 static int file_read(URLContext *h, unsigned char *buf, int size)
59 int fd = (size_t)h->priv_data;
60 return read(fd, buf, size);
63 static int file_write(URLContext *h, unsigned char *buf, int size)
65 int fd = (size_t)h->priv_data;
66 return write(fd, buf, size);
70 static int64_t file_seek(URLContext *h, int64_t pos, int whence)
72 int fd = (size_t)h->priv_data;
73 return lseek(fd, pos, whence);
76 static int file_close(URLContext *h)
78 int fd = (size_t)h->priv_data;
82 URLProtocol file_protocol = {
93 static int pipe_open(URLContext *h, const char *filename, int flags)
97 av_strstart(filename, "pipe:", &filename);
99 fd = strtol(filename, &final, 10);
100 if((filename == final) || *final ) {/* No digits found, or something like 10ab */
101 if (flags & URL_WRONLY) {
108 setmode(fd, O_BINARY);
110 h->priv_data = (void *)(size_t)fd;
115 URLProtocol pipe_protocol = {