2001-07-22 14:18:56 +00:00
|
|
|
/*
|
|
|
|
* Buffered file io for ffmpeg system
|
2002-05-25 22:34:32 +00:00
|
|
|
* Copyright (c) 2001 Fabrice Bellard
|
2001-07-22 14:18:56 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* This file is part of Libav.
|
2006-10-07 15:30:46 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is free software; you can redistribute it and/or
|
2002-05-25 22:34:32 +00:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2001-07-22 14:18:56 +00:00
|
|
|
*
|
2011-03-18 17:35:10 +00:00
|
|
|
* Libav is distributed in the hope that it will be useful,
|
2001-07-22 14:18:56 +00:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
2002-05-25 22:34:32 +00:00
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* Lesser General Public License for more details.
|
2001-07-22 14:18:56 +00:00
|
|
|
*
|
2002-05-25 22:34:32 +00:00
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2011-03-18 17:35:10 +00:00
|
|
|
* License along with Libav; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2001-07-22 14:18:56 +00:00
|
|
|
*/
|
2008-05-09 11:56:36 +00:00
|
|
|
|
|
|
|
#include "libavutil/avstring.h"
|
2001-08-13 21:37:10 +00:00
|
|
|
#include "avformat.h"
|
2001-07-22 14:18:56 +00:00
|
|
|
#include <fcntl.h>
|
2009-01-13 23:44:16 +00:00
|
|
|
#if HAVE_SETMODE
|
2009-01-11 22:05:43 +00:00
|
|
|
#include <io.h>
|
|
|
|
#endif
|
2001-08-13 21:37:10 +00:00
|
|
|
#include <unistd.h>
|
2010-04-04 14:21:29 +00:00
|
|
|
#include <sys/stat.h>
|
2007-08-17 15:14:29 +00:00
|
|
|
#include <stdlib.h>
|
2007-11-22 02:27:39 +00:00
|
|
|
#include "os_support.h"
|
2011-04-07 18:25:52 +00:00
|
|
|
#include "url.h"
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
|
|
|
|
/* standard file protocol */
|
|
|
|
|
2010-07-06 14:28:32 +00:00
|
|
|
static int file_read(URLContext *h, unsigned char *buf, int size)
|
|
|
|
{
|
|
|
|
int fd = (intptr_t) h->priv_data;
|
|
|
|
return read(fd, buf, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int file_write(URLContext *h, const unsigned char *buf, int size)
|
|
|
|
{
|
|
|
|
int fd = (intptr_t) h->priv_data;
|
|
|
|
return write(fd, buf, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int file_get_handle(URLContext *h)
|
|
|
|
{
|
|
|
|
return (intptr_t) h->priv_data;
|
|
|
|
}
|
|
|
|
|
|
|
|
#if CONFIG_FILE_PROTOCOL
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
static int file_open(URLContext *h, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
int access;
|
|
|
|
int fd;
|
|
|
|
|
2007-06-24 11:27:12 +00:00
|
|
|
av_strstart(filename, "file:", &filename);
|
2002-11-29 19:19:47 +00:00
|
|
|
|
2011-04-04 18:11:19 +00:00
|
|
|
if (flags & AVIO_RDWR) {
|
2004-02-14 16:25:32 +00:00
|
|
|
access = O_CREAT | O_TRUNC | O_RDWR;
|
2011-04-04 18:11:19 +00:00
|
|
|
} else if (flags & AVIO_WRONLY) {
|
2001-07-22 14:18:56 +00:00
|
|
|
access = O_CREAT | O_TRUNC | O_WRONLY;
|
|
|
|
} else {
|
|
|
|
access = O_RDONLY;
|
|
|
|
}
|
2007-06-25 20:34:20 +00:00
|
|
|
#ifdef O_BINARY
|
2001-08-13 21:37:10 +00:00
|
|
|
access |= O_BINARY;
|
|
|
|
#endif
|
2001-07-22 14:18:56 +00:00
|
|
|
fd = open(filename, access, 0666);
|
2009-07-27 12:36:22 +00:00
|
|
|
if (fd == -1)
|
2010-04-26 22:36:51 +00:00
|
|
|
return AVERROR(errno);
|
2009-03-26 01:34:02 +00:00
|
|
|
h->priv_data = (void *) (intptr_t) fd;
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* XXX: use llseek */
|
2008-10-03 10:16:29 +00:00
|
|
|
static int64_t file_seek(URLContext *h, int64_t pos, int whence)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
2009-03-26 01:34:02 +00:00
|
|
|
int fd = (intptr_t) h->priv_data;
|
2010-04-04 14:21:29 +00:00
|
|
|
if (whence == AVSEEK_SIZE) {
|
|
|
|
struct stat st;
|
|
|
|
int ret = fstat(fd, &st);
|
|
|
|
return ret < 0 ? AVERROR(errno) : st.st_size;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
return lseek(fd, pos, whence);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int file_close(URLContext *h)
|
|
|
|
{
|
2009-03-26 01:34:02 +00:00
|
|
|
int fd = (intptr_t) h->priv_data;
|
2001-07-22 14:18:56 +00:00
|
|
|
return close(fd);
|
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
URLProtocol ff_file_protocol = {
|
2011-04-08 05:41:47 +00:00
|
|
|
.name = "file",
|
|
|
|
.url_open = file_open,
|
|
|
|
.url_read = file_read,
|
|
|
|
.url_write = file_write,
|
|
|
|
.url_seek = file_seek,
|
|
|
|
.url_close = file_close,
|
2009-03-03 17:04:51 +00:00
|
|
|
.url_get_file_handle = file_get_handle,
|
2001-07-22 14:18:56 +00:00
|
|
|
};
|
|
|
|
|
2010-07-06 14:28:32 +00:00
|
|
|
#endif /* CONFIG_FILE_PROTOCOL */
|
|
|
|
|
|
|
|
#if CONFIG_PIPE_PROTOCOL
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
static int pipe_open(URLContext *h, const char *filename, int flags)
|
|
|
|
{
|
|
|
|
int fd;
|
2008-05-27 01:19:19 +00:00
|
|
|
char *final;
|
2007-08-17 15:14:29 +00:00
|
|
|
av_strstart(filename, "pipe:", &filename);
|
2001-07-22 14:18:56 +00:00
|
|
|
|
2007-08-17 15:14:29 +00:00
|
|
|
fd = strtol(filename, &final, 10);
|
|
|
|
if((filename == final) || *final ) {/* No digits found, or something like 10ab */
|
2011-04-04 18:11:19 +00:00
|
|
|
if (flags & AVIO_WRONLY) {
|
2007-08-17 15:12:30 +00:00
|
|
|
fd = 1;
|
|
|
|
} else {
|
|
|
|
fd = 0;
|
|
|
|
}
|
2007-08-17 15:14:29 +00:00
|
|
|
}
|
2009-01-13 23:44:16 +00:00
|
|
|
#if HAVE_SETMODE
|
2004-03-24 18:29:30 +00:00
|
|
|
setmode(fd, O_BINARY);
|
|
|
|
#endif
|
2009-03-26 01:34:02 +00:00
|
|
|
h->priv_data = (void *) (intptr_t) fd;
|
2004-12-06 00:08:37 +00:00
|
|
|
h->is_streamed = 1;
|
2001-07-22 14:18:56 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
URLProtocol ff_pipe_protocol = {
|
2011-04-08 05:41:47 +00:00
|
|
|
.name = "pipe",
|
|
|
|
.url_open = pipe_open,
|
|
|
|
.url_read = file_read,
|
|
|
|
.url_write = file_write,
|
2009-03-03 17:04:51 +00:00
|
|
|
.url_get_file_handle = file_get_handle,
|
2001-07-22 14:18:56 +00:00
|
|
|
};
|
2010-07-06 14:28:32 +00:00
|
|
|
|
|
|
|
#endif /* CONFIG_PIPE_PROTOCOL */
|