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Diffstat (limited to 'include/gutenprint/module.h')
| -rw-r--r-- | include/gutenprint/module.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/include/gutenprint/module.h b/include/gutenprint/module.h new file mode 100644 index 0000000..3e54099 --- /dev/null +++ b/include/gutenprint/module.h @@ -0,0 +1,111 @@ +/* + * "$Id: module.h,v 1.1 2004/09/17 18:38:01 rleigh Exp $" + * + * libgimpprint module loader - load modules with libltdl/libdl. + * + * Copyright 1997-2000 Michael Sweet (mike@easysw.com), + * Robert Krawitz (rlk@alum.mit.edu) and Michael Natterer (mitch@gimp.org) + * Copyright 2002 Roger Leigh (rleigh@debian.org) + * + * 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. + */ + +/** + * @file gutenprint/module.h + * @brief Module functions. + */ + +/* + * This file must include only standard C header files. The core code must + * compile on generic platforms that don't support glib, gimp, gtk, etc. + */ + +#ifndef GUTENPRINT_MODULE_H +#define GUTENPRINT_MODULE_H + +#ifdef __cplusplus +extern "C" { +#endif + +#include <gutenprint/list.h> + +#ifdef USE_LTDL +#include <ltdl.h> +#elif defined(USE_DLOPEN) +#include <dlfcn.h> +#endif + + +#ifdef USE_LTDL +#define DLOPEN(Filename) lt_dlopen(Filename) +#define DLSYM(Handle, Symbol) lt_dlsym(Handle, Symbol) +#define DLCLOSE(Handle) lt_dlclose(Handle) +#define DLERROR() lt_dlerror() +#elif defined(USE_DLOPEN) +#define DLOPEN(Filename) dlopen(Filename, RTLD_LAZY) +#define DLSYM(Handle, Symbol) stp_dlsym(Handle, Symbol, modulename) +#define DLCLOSE(Handle) dlclose(Handle) +#define DLERROR() dlerror() +#endif + +typedef struct stp_module_version +{ + int major; + int minor; +} stp_module_version_t; + + +typedef enum +{ + STP_MODULE_CLASS_INVALID, + STP_MODULE_CLASS_MISC, + STP_MODULE_CLASS_FAMILY, + STP_MODULE_CLASS_COLOR, + STP_MODULE_CLASS_DITHER +} stp_module_class_t; + + +typedef struct stp_module +{ + const char *name; /* module name */ + const char *version; /* module version number */ + const char *comment; /* description of module function */ + stp_module_class_t class; /* type of module */ +#ifdef USE_LTDL + lt_dlhandle handle; /* ltdl module pointer (set by libgimpprint) */ +#else + void *handle; /* dlopen or static module pointer */ +#endif + int (*init)(void); /* initialisation function */ + int (*fini)(void); /* finalise (cleanup and removal) function */ + void *syms; /* pointer to e.g. a struct containing + internal module symbols (class-specific + functions and data) */ +} stp_module_t; + + +extern int stp_module_load(void); +extern int stp_module_exit(void); +extern int stp_module_open(const char *modulename); +extern int stp_module_init(void); +extern int stp_module_close(stp_list_item_t *module); +extern stp_list_t *stp_module_get_class(stp_module_class_t class); + + +#ifdef __cplusplus + } +#endif + +#endif /* GUTENPRINT_MODULE_H */ |