SDL 2.0
SDL_DirectFB_dyn.c
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1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2019 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../../SDL_internal.h"
22
23#if SDL_VIDEO_DRIVER_DIRECTFB
24
25#include "SDL_DirectFB_video.h"
26#include "SDL_DirectFB_dyn.h"
27
28#ifdef SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC
29#include "SDL_name.h"
30#include "SDL_loadso.h"
31
32#define DFB_SYM(ret, name, args, al, func) ret (*name) args;
33static struct _SDL_DirectFB_Symbols
34{
36 const unsigned int *directfb_major_version;
37 const unsigned int *directfb_minor_version;
38 const unsigned int *directfb_micro_version;
39} SDL_DirectFB_Symbols;
40#undef DFB_SYM
41
42#define DFB_SYM(ret, name, args, al, func) ret name args { func SDL_DirectFB_Symbols.name al ; }
44#undef DFB_SYM
45
46static void *handle = NULL;
47
48int
50{
51 int retval = 0;
52
53 if (handle == NULL) {
54 handle = SDL_LoadObject(SDL_VIDEO_DRIVER_DIRECTFB_DYNAMIC);
55 if (handle != NULL) {
56 retval = 1;
57#define DFB_SYM(ret, name, args, al, func) if (!(SDL_DirectFB_Symbols.name = SDL_LoadFunction(handle, # name))) retval = 0;
59#undef DFB_SYM
60 if (!
61 (SDL_DirectFB_Symbols.directfb_major_version =
62 SDL_LoadFunction(handle, "directfb_major_version")))
63 retval = 0;
64 if (!
65 (SDL_DirectFB_Symbols.directfb_minor_version =
66 SDL_LoadFunction(handle, "directfb_minor_version")))
67 retval = 0;
68 if (!
69 (SDL_DirectFB_Symbols.directfb_micro_version =
70 SDL_LoadFunction(handle, "directfb_micro_version")))
71 retval = 0;
72 }
73 }
74 if (retval) {
75 const char *stemp = DirectFBCheckVersion(DIRECTFB_MAJOR_VERSION,
76 DIRECTFB_MINOR_VERSION,
77 DIRECTFB_MICRO_VERSION);
78 /* Version Check */
79 if (stemp != NULL) {
80 fprintf(stderr,
81 "DirectFB Lib: Version mismatch. Compiled: %d.%d.%d Library %d.%d.%d\n",
82 DIRECTFB_MAJOR_VERSION, DIRECTFB_MINOR_VERSION,
83 DIRECTFB_MICRO_VERSION,
84 *SDL_DirectFB_Symbols.directfb_major_version,
85 *SDL_DirectFB_Symbols.directfb_minor_version,
86 *SDL_DirectFB_Symbols.directfb_micro_version);
87 retval = 0;
88 }
89 }
90 if (!retval)
92 return retval;
93}
94
95void
97{
98 if (handle != NULL) {
100 handle = NULL;
101 }
102}
103
104#else
105int
107{
108 return 1;
109}
110
111void
113{
114}
115#endif
116
117#endif /* SDL_VIDEO_DRIVER_DIRECTFB */
void SDL_DirectFB_UnLoadLibrary(void)
#define DFB_SYMS
int SDL_DirectFB_LoadLibrary(void)
#define SDL_LoadObject
#define SDL_UnloadObject
void * SDL_LoadFunction(void *handle, const char *name)
#define NULL
Definition: begin_code.h:167
EGLImageKHR EGLint EGLint * handle
Definition: eglext.h:937
SDL_bool retval