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/*
* Copyright (C) 2000-2003 the xine project,
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*
* abortable i/o helper functions
*/
#ifndef IO_HELPER_H
#define IO_HELPER_H
#include "xine_internal.h"
/* select states */
#define XIO_READ_READY 1
#define XIO_WRITE_READY 2
/* xine select return codes */
#define XIO_READY 0
#define XIO_ERROR 1
#define XIO_ABORTED 2
#define XIO_TIMEOUT 3
/*
* Waits for a file descriptor/socket to change status.
*
* network input plugins should use this function in order to
* not freeze the engine.
*
* params :
* fd file/socket descriptor
* state XIO_READ_READY, XIO_WRITE_READY
* *abort an other thread can abort this function by setting *abort
* timeout_sec timeout in seconds
*
* return value :
* XIO_READY the file descriptor is ready for cmd
* XIO_ERROR an i/o error occured
* XIO_ABORTED command aborted by an other thread
* XIO_TIMEOUT the file descriptor is not ready after timeout_msec milliseconds
*/
int xio_select (xine_stream_t *stream, int fd, int state, int timeout_msec);
/*
* open a tcp connection
*
* returns a socket descriptor or -1 if an error occured
*/
int xio_tcp_connect(xine_stream_t *stream, const char *host, int port);
/*
* read from tcp socket checking demux_action_pending
*
* network input plugins should use this function in order to
* not freeze the engine.
*
* aborts with zero if no data is available and *abort is set
*/
off_t xio_tcp_read (xine_stream_t *stream, int s, char *buf, off_t todo);
/*
* write to a tcp socket checking demux_action_pending
*
* network input plugins should use this function in order to
* not freeze the engine.
*
* aborts with zero if no data is available and *abort is set
*/
off_t xio_tcp_write (xine_stream_t *stream, int s, char *buf, off_t todo);
/*
* read from a file descriptor checking demux_action_pending
*
* the fifo input plugin should use this function in order to
* not freeze the engine.
*
* aborts with zero if no data is available and *abort is set
*/
off_t xio_file_read (xine_stream_t *stream, int fd, char *buf, off_t todo);
/*
* write to a tcp socket checking demux_action_pending
*
* the fifo input plugin should use this function in order to
* not freeze the engine.
*
* aborts with zero if *abort is set
*/
off_t xio_file_write (xine_stream_t *stream, int fd, char *buf, off_t todo);
#endif
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