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/* -*-c-*- ---------------- xmix_device.h :
* Protected declarations for mix_device_t
* ------------------------------------------------------------------
* Last change: Time-stamp: <2001-05-07 23:59:35 jao>
* ------------------------------------------------------------------
* Copyright (C) 2001 Free Software Foundation, Inc.
*
* This program 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.
*
* This program 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.
*
*/
#ifndef XMIX_DEVICE_H
#define XMIX_DEVICE_H
#include "mix_file.h"
#include "mix_device.h"
/* device file directory */
extern gchar *DEV_DIR_;
/* table of overridable device operations */
typedef gboolean (*mix_dev_write_func_t) (mix_device_t *, const mix_word_t *);
typedef gboolean (*mix_dev_read_func_t) (mix_device_t *, mix_word_t *);
typedef gboolean (*mix_dev_ioc_func_t) (mix_device_t *, mix_short_t);
typedef gboolean (*mix_dev_busy_func_t) (const mix_device_t *);
typedef void (*mix_dev_destroy_t) (mix_device_t *);
typedef struct mix_device_vtable_t
{
mix_dev_write_func_t write;
mix_dev_read_func_t read;
mix_dev_ioc_func_t ioc;
mix_dev_busy_func_t busy;
mix_dev_destroy_t destroy;
} mix_device_vtable_t;
/* default vtable */
extern const mix_device_vtable_t *DEF_DEV_VTABLE_;
/*
Actual definition of a mix device, which can be cast to
a mix file.
*/
struct mix_device_t
{
mix_iochannel_t *file;
mix_device_type_t type;
const mix_device_vtable_t *vtable;
};
/* constructors */
extern void
construct_device_ (mix_device_t *dev, mix_device_type_t type);
extern void
construct_device_with_name_ (mix_device_t *dev,
mix_device_type_t type, const gchar *name);
extern void
construct_device_with_file_ (mix_device_t *dev,
mix_device_type_t type, FILE *file);
#define GET_CHANNEL_(dev) (dev->file)
#define GET_FILE_(dev) ((mix_file_t *)(dev->file))
/* default extension for device files */
extern const char *DEV_EXT_;
/* default names for device files */
extern const char *DEF_NAMES_[];
/* block sizes for devices */
extern const size_t SIZES_[];
/* io modes for devices */
extern const mix_device_mode_t MODES_[];
/* files modes for devices */
extern const mix_fmode_t FMODES_[];
#endif /* XMIX_DEVICE_H */
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