//vio_cmd.h:

/*
 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008
 *
 *  This file is part of libroar a part of RoarAudio,
 *  a cross-platform sound system for both, home and professional use.
 *  See README for details.
 *
 *  This file is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 3
 *  as published by the Free Software Foundation.
 *
 *  libroar 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 software; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  NOTE for everyone want's to change something and send patches:
 *  read README and HACKING! There a addition information on
 *  the license of this document you need to read before you send
 *  any patches.
 *
 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
 *  or libpulse*:
 *  The libs libroaresd, libroararts and libroarpulse link this lib
 *  and are therefore GPL. Because of this it may be illigal to use
 *  them with any software that uses libesd, libartsc or libpulse*.
 */

#ifndef _LIBROARVIO_CMD_H_
#define _LIBROARVIO_CMD_H_

#include "libroar.h"

#define ROAR_VIO_CMD_OPTS_NONE      0x00
#define ROAR_VIO_CMD_OPTS_NONBLOCK  0x01
#define ROAR_VIO_CMD_OPTS_ON_DEMAND 0x02

#define ROAR_VIO_CMD_BUFSIZE        1024

struct roar_vio_cmd_child {
 int opened;
 pid_t pid;
 int in;
 int out;
 char * cmd;
};

struct roar_vio_cmd_state {
 struct roar_vio_calls * next;
 int options;

 struct roar_vio_cmd_child reader;
 struct roar_vio_cmd_child writer;
};

int roar_vio_open_cmd(struct roar_vio_calls * calls, struct roar_vio_calls * dst,
                      char * reader, char * writer, int options);
int roar_vio_cmd_close(struct roar_vio_calls * vio);
int roar_vio_cmd_fork(struct roar_vio_cmd_child * child);
int roar_vio_cmd_wait(struct roar_vio_cmd_child * child);

// possible VIOs:

// cmd:
ssize_t roar_vio_cmd_read    (struct roar_vio_calls * vio, void *buf, size_t count);
ssize_t roar_vio_cmd_write   (struct roar_vio_calls * vio, void *buf, size_t count);
int     roar_vio_cmd_nonblock(struct roar_vio_calls * vio, int state);
int     roar_vio_cmd_sync    (struct roar_vio_calls * vio);

/*
// pass
int     roar_vio_open_pass    (struct roar_vio_calls * calls, struct roar_vio_calls * dst);
ssize_t roar_vio_pass_read    (struct roar_vio_calls * vio, void *buf, size_t count);
ssize_t roar_vio_pass_write   (struct roar_vio_calls * vio, void *buf, size_t count);
off_t   roar_vio_pass_lseek   (struct roar_vio_calls * vio, off_t offset, int whence);
int     roar_vio_pass_nonblock(struct roar_vio_calls * vio, int state);
int     roar_vio_pass_sync    (struct roar_vio_calls * vio);
int     roar_vio_pass_ctl     (struct roar_vio_calls * vio, int cmd, void * data);
int     roar_vio_pass_close   (struct roar_vio_calls * vio);
*/

// MISC:
int roar_vio_open_gzip(struct roar_vio_calls * calls, struct roar_vio_calls * dst, int level);

#endif

//ll