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
28 /* standard file protocol */
30 static int file_open(URLContext *h, const char *filename, int flags)
35 av_strstart(filename, "file:", &filename);
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;
47 fd = open(filename, access, 0666);
49 return AVERROR(ENOENT);
50 h->priv_data = (void *)(size_t)fd;
54 static int file_read(URLContext *h, unsigned char *buf, int size)
56 int fd = (size_t)h->priv_data;
57 return read(fd, buf, size);
60 static int file_write(URLContext *h, unsigned char *buf, int size)
62 int fd = (size_t)h->priv_data;
63 return write(fd, buf, size);
67 static offset_t file_seek(URLContext *h, offset_t pos, int whence)
69 int fd = (size_t)h->priv_data;
70 return lseek(fd, pos, whence);
73 static int file_close(URLContext *h)
75 int fd = (size_t)h->priv_data;
79 URLProtocol file_protocol = {
90 static int pipe_open(URLContext *h, const char *filename, int flags)
94 if (flags & URL_WRONLY) {
100 setmode(fd, O_BINARY);
102 h->priv_data = (void *)(size_t)fd;
107 static int pipe_read(URLContext *h, unsigned char *buf, int size)
109 int fd = (size_t)h->priv_data;
110 return read(fd, buf, size);
113 static int pipe_write(URLContext *h, unsigned char *buf, int size)
115 int fd = (size_t)h->priv_data;
116 return write(fd, buf, size);
119 static int pipe_close(URLContext *h)
124 URLProtocol pipe_protocol = {