mirror of
https://github.com/kevinbentley/Descent3.git
synced 2025-01-23 12:08:56 +00:00
81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#ifdef DECLARE_POINTERS
|
|
#define FEXTERN
|
|
#else
|
|
#define FEXTERN extern
|
|
#endif
|
|
#include <X11/Xlib.h>
|
|
#include <X11/Xutil.h>
|
|
#include <X11/extensions/xf86dga.h>
|
|
|
|
#define XF86DGAQueryVersion DGAQueryVersion
|
|
#define XF86DGAQueryExtension DGAQueryExtension
|
|
#define XF86DGADirectVideo DGADirectVideo
|
|
|
|
typedef Bool (*DGAQueryVersion_fp)(Display *pa, int *pb, int *pc);
|
|
FEXTERN DGAQueryVersion_fp DGAQueryVersion;
|
|
|
|
typedef Bool (*DGAQueryExtension_fp)(Display *pa, int *pb, int *pc);
|
|
FEXTERN DGAQueryExtension_fp DGAQueryExtension;
|
|
|
|
typedef Status (*DGADirectVideo_fp)(Display *pa, int pb, int pc);
|
|
FEXTERN DGADirectVideo_fp DGADirectVideo;
|
|
|
|
#ifndef DECLARE_POINTERS
|
|
bool LoadOutrageXWindowsLib(bool load = true);
|
|
#else
|
|
#include <dlfcn.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
void LoadOutrageXWindowsLibSetNULL(void) {
|
|
DGAQueryVersion = NULL;
|
|
DGAQueryExtension = NULL;
|
|
DGADirectVideo = NULL;
|
|
}
|
|
|
|
bool LoadOutrageXWindowsLib(bool load) {
|
|
#define XWINDOWSEXTLIB "OutrageDynXLib.so"
|
|
static void *handle = NULL;
|
|
|
|
if (!load) {
|
|
LoadOutrageXWindowsLibSetNULL();
|
|
if (handle) {
|
|
dlclose(handle);
|
|
handle = NULL;
|
|
return true;
|
|
}
|
|
fprintf(stderr, "Library Unload Failed: %s\n", XWINDOWSEXTLIB);
|
|
return false;
|
|
}
|
|
|
|
if (handle)
|
|
return true;
|
|
|
|
// Load the library
|
|
handle = dlopen(XWINDOWSEXTLIB, RTLD_LAZY | RTLD_GLOBAL);
|
|
if (!handle) {
|
|
fprintf(stderr, "Library Load Failed: %s\n", XWINDOWSEXTLIB);
|
|
return false;
|
|
}
|
|
|
|
DGAQueryVersion = (DGAQueryVersion_fp)dlsym(handle, "DGAQueryVersion");
|
|
if (!DGAQueryVersion)
|
|
goto load_error;
|
|
|
|
DGAQueryExtension = (DGAQueryExtension_fp)dlsym(handle, "DGAQueryExtension");
|
|
if (!DGAQueryExtension)
|
|
goto load_error;
|
|
|
|
DGADirectVideo = (DGADirectVideo_fp)dlsym(handle, "DGADirectVideo");
|
|
if (!DGADirectVideo)
|
|
goto load_error;
|
|
|
|
return true;
|
|
|
|
load_error:
|
|
LoadOutrageXWindowsLibSetNULL();
|
|
fprintf(stderr, "Library Symbol Resolve Error: %s\n", XWINDOWSEXTLIB);
|
|
dlclose(handle);
|
|
handle = NULL;
|
|
return false;
|
|
}
|
|
#endif |