arch/all-hosted/hidd/sdl/sdl_hostlib.c

   1 /*
   2  * sdl.hidd - SDL graphics/sound/keyboard for AROS hosted
   3  * Copyright (c) 2007 Robert Norris. All rights reserved.
   4  * Copyright (c) 2007-2011 The AROS Development Team
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the same terms as AROS itself.
   8  */
   9
  10 #include <aros/kernel.h>
  11 #include <aros/symbolsets.h>
  12 #include <exec/semaphores.h>
  13
  14 #include <proto/bootloader.h>
  15 #include <proto/exec.h>
  16 #include <proto/hostlib.h>
  17 #include <proto/kernel.h>
  18
  19 #include "sdl_intern.h"
  20
  21 #define DEBUG 0
  22 #include <aros/debug.h>
  23
  24 struct sdl_funcs sdl_funcs;
  25
  26 static const char *sdl_func_names[] = {
  27     "SDL_GetError",
  28     "SDL_VideoDriverName",
  29     "SDL_GetVideoSurface",
  30     "SDL_GetVideoInfo",
  31     "SDL_ListModes",
  32     "SDL_SetVideoMode",
  33     "SDL_UpdateRect",
  34     "SDL_SetColors",
  35     "SDL_CreateRGBSurface",
  36     "SDL_CreateRGBSurfaceFrom",
  37     "SDL_FreeSurface",
  38     "SDL_LockSurface",
  39     "SDL_UnlockSurface",
  40     "SDL_UpperBlit",
  41     "SDL_FillRect",
  42     "SDL_WM_SetCaption",
  43     "SDL_WM_SetIcon",
  44     "SDL_ShowCursor",
  45     "SDL_PumpEvents",
  46     "SDL_PeepEvents",
  47     "SDL_Linked_Version",
  48     "SDL_Init",
  49     "SDL_Quit",
  50     NULL
  51 };
  52
  53 APTR HostLibBase;
  54
  55 static void *sdl_hostlib_load_so(const char *sofile, const char **names, void **funcptr) {
  56     void *handle;
  57     char *err;
  58     int i;
  59
  60     D(bug("[sdl] loading functions from %s\n", sofile));
  61
  62     if ((handle = HostLib_Open(sofile, &err)) == NULL) {
  63         kprintf("[sdl] couldn't open '%s': %s\n", sofile, err);
  64         return NULL;
  65     }
  66
  67     for (i = 0; names[i]; i++) {
  68         funcptr[i] = HostLib_GetPointer(handle, names[i], &err);
  69         if (err != NULL) {
  70             kprintf("[sdl] couldn't get symbol '%s' from '%s': %s\n", names[i], sofile, err);
  71             HostLib_FreeErrorStr(err);
  72             HostLib_Close(handle, NULL);
  73             return NULL;
  74         }
  75     }
  76
  77     D(bug("[sdl] done\n"));
  78
  79     return handle;
  80 }
  81
  82 int sdl_hostlib_init(LIBBASETYPEPTR LIBBASE)
  83 {
  84     STRPTR LibraryFile = SDL_SOFILE;
  85     APTR KernelBase;
  86     const char *arch;
  87
  88     D(bug("[sdl] hostlib init\n"));
  89
  90     if ((HostLibBase = OpenResource("hostlib.resource")) == NULL) {
  91         kprintf("[sdl] couldn't open hostlib.resource\n");
  92         return FALSE;
  93     }
  94
  95     KernelBase = OpenResource("kernel.resource");
  96     if (!KernelBase)
  97         return FALSE;
  98
  99     arch = (const char *)KrnGetSystemAttr(KATTR_Architecture);
 100     D(bug("[sdl] Host operating system: %s\n", arch));
 101
 102     if (!strcmp(arch, "mingw32-i386"))
 103         LibraryFile = SDL_DLLFILE;
 104
 105     if ((LIBBASE->sdl_handle = sdl_hostlib_load_so(LibraryFile, sdl_func_names, (void **) &sdl_funcs)) == NULL)
 106         return FALSE;
 107
 108     return TRUE;
 109 }
 110
 111 int sdl_hostlib_expunge(LIBBASETYPEPTR LIBBASE) {
 112     D(bug("[sdl] hostlib expunge\n"));
 113
 114     if (LIBBASE->sdl_handle != NULL)
 115         HostLib_Close(LIBBASE->sdl_handle, NULL);
 116
 117     return TRUE;
 118 }