/*
 * plugin.h -- enfle plugin interface header
 * (C)Copyright 1999 by Hiroshi Takekawa
 * Last Modified: Thu Sep  9 19:52:56 1999.
 * $Id: plugin.h,v 1.5 1999/09/09 20:53:56 sian Exp $
 */

#ifndef _PLUGIN_H
#define _PLUGIN_H

#include <stdio.h>
#include <dlfcn.h>

typedef enum _plugintype {
  _Loader,
  _Saver,
  _Archiver
} PluginType;

typedef struct _plugininfo PluginInfo;

#include "enfle.h"
#include "image.h"
#include "dlist.h"

/* plugin interface version 1 */
#define METHOD(type, name, args) type (*name)args
struct _plugininfo {
  int version;
  PluginType type;
  char *pluginname;
  char *pluginshortname;
  unsigned char *author;
  void *dlhandle;
  union _functions {
    struct _loader {
      METHOD(int, load_image, (Info *, Image *));
    } loader;
    struct _saver {
      METHOD(int, save_image, (Info *, Image *, char *));
    } saver;
    struct _archiver {
      METHOD(int, open, (Archive *));
    } archiver;
  } functions;
};

PluginInfo *plugin_retrieve_info(int (*)(PluginInfo *));
int plugin_install(Dlist *, PluginInfo *);
int plugin_uninstall(PluginInfo *);
int plugin_load(Dlist *, char *);
int plugin_scan_directory(Dlist *, char *);
int plugin_destroy(Dlist *);

#include "archive.h"

#endif