mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-24 12:09:55 +00:00
138 lines
3.1 KiB
C
138 lines
3.1 KiB
C
/*
|
|
* Buffered file io for ffmpeg system
|
|
* Copyright (c) 2001 Fabrice Bellard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include "avformat.h"
|
|
#include <fcntl.h>
|
|
#ifndef CONFIG_WIN32
|
|
#include <unistd.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/time.h>
|
|
#else
|
|
#include <io.h>
|
|
#define open(fname,oflag,pmode) _open(fname,oflag,pmode)
|
|
#endif /* CONFIG_WIN32 */
|
|
|
|
|
|
/* standard file protocol */
|
|
|
|
static int file_open(URLContext *h, const char *filename, int flags)
|
|
{
|
|
int access;
|
|
int fd;
|
|
|
|
strstart(filename, "file:", &filename);
|
|
|
|
if (flags & URL_RDWR) {
|
|
access = O_CREAT | O_TRUNC | O_RDWR;
|
|
} else if (flags & URL_WRONLY) {
|
|
access = O_CREAT | O_TRUNC | O_WRONLY;
|
|
} else {
|
|
access = O_RDONLY;
|
|
}
|
|
#if defined(CONFIG_WIN32) || defined(CONFIG_OS2) || defined(__CYGWIN__)
|
|
access |= O_BINARY;
|
|
#endif
|
|
fd = open(filename, access, 0666);
|
|
if (fd < 0)
|
|
return -ENOENT;
|
|
h->priv_data = (void *)(size_t)fd;
|
|
return 0;
|
|
}
|
|
|
|
static int file_read(URLContext *h, unsigned char *buf, int size)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
return read(fd, buf, size);
|
|
}
|
|
|
|
static int file_write(URLContext *h, unsigned char *buf, int size)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
return write(fd, buf, size);
|
|
}
|
|
|
|
/* XXX: use llseek */
|
|
static offset_t file_seek(URLContext *h, offset_t pos, int whence)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
#ifdef CONFIG_WIN32
|
|
return _lseeki64(fd, pos, whence);
|
|
#else
|
|
return lseek(fd, pos, whence);
|
|
#endif
|
|
}
|
|
|
|
static int file_close(URLContext *h)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
return close(fd);
|
|
}
|
|
|
|
URLProtocol file_protocol = {
|
|
"file",
|
|
file_open,
|
|
file_read,
|
|
file_write,
|
|
file_seek,
|
|
file_close,
|
|
};
|
|
|
|
/* pipe protocol */
|
|
|
|
static int pipe_open(URLContext *h, const char *filename, int flags)
|
|
{
|
|
int fd;
|
|
|
|
if (flags & URL_WRONLY) {
|
|
fd = 1;
|
|
} else {
|
|
fd = 0;
|
|
}
|
|
#if defined(CONFIG_WIN32) || defined(CONFIG_OS2) || defined(__CYGWIN__)
|
|
setmode(fd, O_BINARY);
|
|
#endif
|
|
h->priv_data = (void *)(size_t)fd;
|
|
return 0;
|
|
}
|
|
|
|
static int pipe_read(URLContext *h, unsigned char *buf, int size)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
return read(fd, buf, size);
|
|
}
|
|
|
|
static int pipe_write(URLContext *h, unsigned char *buf, int size)
|
|
{
|
|
int fd = (size_t)h->priv_data;
|
|
return write(fd, buf, size);
|
|
}
|
|
|
|
static int pipe_close(URLContext *h)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
URLProtocol pipe_protocol = {
|
|
"pipe",
|
|
pipe_open,
|
|
pipe_read,
|
|
pipe_write,
|
|
NULL,
|
|
pipe_close,
|
|
};
|