source: roaraudio/include/libroar/roardl.h @ 3360:ca067358e080

//roardl.h:

/*
 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2010
 *
 *  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 _LIBROARROARDL_H_
#define _LIBROARROARDL_H_

#include "libroar.h"

#define ROAR_DL_FLAG_DEFAUTS           -1

#define ROAR_DL_HANDLE_DEFAULT          ((struct roar_dl_lhandle*)(void*)0)
#define ROAR_DL_HANDLE_NEXT             ((struct roar_dl_lhandle*)(void*)1)

#define ROAR_DL_FN_DSTR                 0
#define ROAR_DL_FN_CDRIVER              1
#define ROAR_DL_FN_TRANSCODER           2
#define ROAR_DL_FN_DRIVER               3
#define ROAR_DL_FN_SOURCE               4
#define ROAR_DL_FN_FILTER               5
#define ROAR_DL_FN_FF                   6 /* file format */
#define ROAR_DL_FN_AUTH                 7
#define ROAR_DL_FN_BRIDGE               8
#define ROAR_DL_FN_ROARDSCHED           9
#define ROAR_DL_FN_APPSCHED            10
#define ROAR_DL_FN_PROTO               11
//#define ROAR_DL_FN_               9
#define ROAR_DL_FN_MAX                 16

#define ROAR_DL_LIBPARA_VERSION         0
#define ROAR_DL_LIBINST_VERSION         0

#define ROAR_DL_PLUGIN(lib) struct roar_dl_libraryinst *                                          \
                             _##lib##_roaraudio_library_init(struct roar_dl_librarypara * para);  \
                            struct roar_dl_libraryinst *                                          \
                             _roaraudio_library_init(struct roar_dl_librarypara * para) {         \
                              return _##lib##_roaraudio_library_init(para);                       \
                            }                                                                     \
                            struct roar_dl_libraryinst *                                          \
                             _##lib##_roaraudio_library_init(struct roar_dl_librarypara * para)   \

#define ROAR_DL_PLUGIN_START(xlib) ROAR_DL_PLUGIN(xlib) {                                         \
                                     static int _inited = 0;                                      \
                                     static struct roar_dl_libraryinst lib;                       \
                                     if ( _inited )                                               \
                                      return &lib;                                                \
                                     memset(&lib, 0, sizeof(lib));                                \
                                     lib.version = ROAR_DL_LIBINST_VERSION;                       \
                                     lib.len     = sizeof(lib);                                   \
                                     do

#define ROAR_DL_PLUGIN_END          while(0);                                                     \
                                    _inited = 1;                                                  \
                                    return &lib;                                                  \
                                   }

#define ROAR_DL_PLUGIN_REG(fn, func) (lib.func[(fn)] = (func))
#define ROAR_DL_PLUGIN_REG_UNLOAD(func) (lib.unload = (func))

struct roar_dl_librarypara {
 int version;
 size_t len;
};

struct roar_dl_libraryinst {
 int      version;
 size_t   len;
 int    (*unload)(struct roar_dl_librarypara * para, struct roar_dl_libraryinst * lib);
 int    (*func[ROAR_DL_FN_MAX])(struct roar_dl_librarypara * para, struct roar_dl_libraryinst * lib);
};

struct roar_dl_lhandle {
 struct roar_dl_librarypara * para;
 struct roar_dl_libraryinst * lib;
#if defined(ROAR_HAVE_LIBDL)
 void * handle;
#else
 char dummy[8];
#endif
};

struct roar_dl_lhandle * roar_dl_open(const char * filename, int flags, int ra_init);
int                      roar_dl_close(struct roar_dl_lhandle * lhandle);

void                   * roar_dl_getsym(struct roar_dl_lhandle * lhandle, const char * sym, int type);

int                      roar_dl_ra_init(struct roar_dl_lhandle * lhandle, const char * prefix);

#endif

//ll