/* LIBGIMP - The GIMP Library                                                   
 * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library 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.
 */

#ifndef __GIMP_WIRE_H__
#define __GIMP_WIRE_H__


#include <glib.h>


typedef struct _WireMessage  WireMessage;

typedef void (* WireReadFunc)    (GIOChannel *channel, WireMessage *msg);
typedef void (* WireWriteFunc)   (GIOChannel *channel, WireMessage *msg);
typedef void (* WireDestroyFunc) (WireMessage *msg);
typedef int  (* WireIOFunc)      (GIOChannel *channel, guint8 *buf, gulong count);
typedef int  (* WireFlushFunc)   (GIOChannel *channel);


struct _WireMessage
{
  guint32 type;
  gpointer data;
};


void wire_register     (guint32          type,
		        WireReadFunc     read_func,
		        WireWriteFunc    write_func,
		        WireDestroyFunc  destroy_func);
void wire_set_reader   (WireIOFunc       read_func);
void wire_set_writer   (WireIOFunc       write_func);
void wire_set_flusher  (WireFlushFunc    flush_func);
int  wire_read         (GIOChannel	*channel,
			guint8          *buf,
			gulong           count);
int  wire_write        (GIOChannel	*channel,
			guint8          *buf,
			gulong           count);
int  wire_flush        (GIOChannel	*channel);
int  wire_error        (void);
void wire_clear_error  (void);
int  wire_read_msg     (GIOChannel	*channel,
		        WireMessage     *msg);
int  wire_write_msg    (GIOChannel	*channel,
		        WireMessage     *msg);
void wire_destroy      (WireMessage     *msg);
int  wire_read_int32   (GIOChannel	*channel,
		        guint32         *data,
		        gint             count);
int  wire_read_int16   (GIOChannel	*channel,
		        guint16         *data,
		        gint             count);
int  wire_read_int8    (GIOChannel	*channel,
		        guint8          *data,
		        gint             count);
int  wire_read_double  (GIOChannel	*channel,
		        gdouble         *data,
		        gint             count);
int  wire_read_string  (GIOChannel	*channel,
			gchar          **data,
			gint             count);
int  wire_write_int32  (GIOChannel	*channel,
		        guint32         *data,
		        gint             count);
int  wire_write_int16  (GIOChannel	*channel,
		        guint16         *data,
		        gint             count);
int  wire_write_int8   (GIOChannel	*channel,
		        guint8          *data,
		        gint             count);
int  wire_write_double (GIOChannel	*channel,
			gdouble         *data,
			gint             count);
int  wire_write_string (GIOChannel	*channel,
			gchar          **data,
			gint             count);

#endif /* __GIMP_WIRE_H__ */