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
27 #include "os_support.h"
30 /* standard file protocol */
32 static int file_open(URLContext *h, const char *filename, int flags)
37 av_strstart(filename, "file:", &filename);
39 if (flags & URL_RDWR) {
40 access = O_CREAT | O_TRUNC | O_RDWR;
41 } else if (flags & URL_WRONLY) {
42 access = O_CREAT | O_TRUNC | O_WRONLY;
49 fd = open(filename, access, 0666);
51 return AVERROR(ENOENT);
52 h->priv_data = (void *)(size_t)fd;
56 static int file_read(URLContext *h, unsigned char *buf, int size)
58 int fd = (size_t)h->priv_data;
59 return read(fd, buf, size);
62 static int file_write(URLContext *h, unsigned char *buf, int size)
64 int fd = (size_t)h->priv_data;
65 return write(fd, buf, size);
69 static offset_t file_seek(URLContext *h, offset_t pos, int whence)
71 int fd = (size_t)h->priv_data;
72 return lseek(fd, pos, whence);
75 static int file_close(URLContext *h)
77 int fd = (size_t)h->priv_data;
81 URLProtocol file_protocol = {
92 static int pipe_open(URLContext *h, const char *filename, int flags)
96 av_strstart(filename, "pipe:", &filename);
98 fd = strtol(filename, &final, 10);
99 if((filename == final) || *final ) {/* No digits found, or something like 10ab */
100 if (flags & URL_WRONLY) {
107 setmode(fd, O_BINARY);
109 h->priv_data = (void *)(size_t)fd;
114 URLProtocol pipe_protocol = {