mirror of
https://git.ffmpeg.org/ffmpeg.git
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122 lines
2.6 KiB
C
122 lines
2.6 KiB
C
/*
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* Buffered file io for ffmpeg system
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* Copyright (c) 2001 Gerard Lantau
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <sys/time.h>
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#include "avformat.h"
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/* standard file protocol */
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static int file_open(URLContext *h, const char *filename, int flags)
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{
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int access;
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int fd;
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if (flags & URL_WRONLY) {
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access = O_CREAT | O_TRUNC | O_WRONLY;
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} else {
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access = O_RDONLY;
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}
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fd = open(filename, access, 0666);
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if (fd < 0)
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return -ENOENT;
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h->priv_data = (void *)fd;
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return 0;
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}
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static int file_read(URLContext *h, unsigned char *buf, int size)
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{
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int fd = (int)h->priv_data;
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return read(fd, buf, size);
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}
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static int file_write(URLContext *h, unsigned char *buf, int size)
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{
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int fd = (int)h->priv_data;
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return write(fd, buf, size);
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}
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/* XXX: use llseek */
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static offset_t file_seek(URLContext *h, offset_t pos, int whence)
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{
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int fd = (int)h->priv_data;
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return lseek(fd, pos, whence);
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}
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static int file_close(URLContext *h)
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{
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int fd = (int)h->priv_data;
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return close(fd);
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}
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URLProtocol file_protocol = {
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"file",
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file_open,
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file_read,
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file_write,
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file_seek,
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file_close,
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};
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/* pipe protocol */
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static int pipe_open(URLContext *h, const char *filename, int flags)
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{
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int fd;
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if (flags & URL_WRONLY) {
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fd = 1;
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} else {
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fd = 0;
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}
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h->priv_data = (void *)fd;
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return 0;
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}
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static int pipe_read(URLContext *h, unsigned char *buf, int size)
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{
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int fd = (int)h->priv_data;
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return read(fd, buf, size);
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}
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static int pipe_write(URLContext *h, unsigned char *buf, int size)
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{
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int fd = (int)h->priv_data;
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return write(fd, buf, size);
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}
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static int pipe_close(URLContext *h)
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{
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return 0;
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}
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URLProtocol pipe_protocol = {
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"pipe",
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pipe_open,
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pipe_read,
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pipe_write,
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NULL,
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pipe_close,
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};
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