mirror of
https://github.com/shadowfacts/lwjgl2-arm64.git
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119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/* Handle to ilu Library */
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#ifdef _WIN32
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#include "extilu.h"
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static HMODULE devILUhandle;
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#endif
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#ifdef _X11
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#include "extilu.h"
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static void* devILUhandle;
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#endif
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#ifdef _MACOSX
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#include <mach-o/dyld.h>
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#include <stdlib.h>
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#include <string.h>
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// note, we use the IL handle since it's all in one lib
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extern const struct mach_header* devILhandle;
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static const struct mach_header* devILUhandle; // never actually used, just makes it shut up
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#include "extilu.h"
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#endif
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/**
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* Retrieves a function pointer from the ilu library
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* @param function Name of function to retrieve
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*/
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static void *NativeGetFunctionPointer(const char *function) {
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#ifdef _WIN32
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return GetProcAddress(devILUhandle, function);
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#endif
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#ifdef _X11
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return dlsym(devILUhandle, function);
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#endif
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#ifdef _MACOSX
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char *mac_symbol_name = (char *)malloc((strlen(function) + 2)*sizeof(char));
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if (mac_symbol_name == NULL)
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return NULL;
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mac_symbol_name[0] = '_';
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strcpy(&(mac_symbol_name[1]), function);
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NSSymbol symbol = NSLookupSymbolInImage(devILhandle, mac_symbol_name, NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
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free(mac_symbol_name);
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if (symbol == NULL)
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return NULL;
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return NSAddressOfSymbol(symbol);
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#endif
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}
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/**
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* Retrieves a pointer to the named function
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*
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* @param function Name of function
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* @return pointer to named function, or NULL if not found
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*/
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static void* extilu_GetProcAddress(const char* function) {
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void *p = NativeGetFunctionPointer(function);
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if (p == NULL) {
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printfDebug("Could not locate symbol %s\n", function);
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}
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return p;
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}
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/**
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* Initializes all functions for class
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*/
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void extilu_InitializeClass(JNIEnv *env, jclass clazz, int num_functions, JavaMethodAndExtFunction *functions) {
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ext_InitializeClass(env, clazz, &extilu_GetProcAddress, num_functions, functions);
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}
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/**
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* Opens the native library
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*/
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bool extilu_Open(JNIEnv *env, jobjectArray ilPaths) {
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jsize pathcount = (*env)->GetArrayLength(env, ilPaths);
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int i;
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jstring path;
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char *path_str;
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printfDebug("Found %d ilu paths\n", (int)pathcount);
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for(i=0;i<pathcount;i++) {
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path = (jstring) (*env)->GetObjectArrayElement(env, ilPaths, i);
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path_str = GetStringNativeChars(env, path);
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printfDebug("Testing '%s'\n", path_str);
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#ifdef _WIN32
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devILUhandle = LoadLibrary(path_str);
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#endif
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#ifdef _X11
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devILUhandle = dlopen(path_str, RTLD_LAZY);
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#endif
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#ifdef _MACOSX
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devILUhandle = NSAddImage(path_str, NSADDIMAGE_OPTION_RETURN_ON_ERROR);
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#endif
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if (devILUhandle != NULL) {
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printfDebug("Found ilu at '%s'\n", path_str);
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}
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free(path_str);
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if (devILUhandle != NULL) {
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return true;
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}
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}
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throwException(env, "Could not load ilu library.");
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return false;
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}
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/**
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* Closes the native library
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*/
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void extilu_Close(void) {
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#ifdef _WIN32
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FreeLibrary(devILUhandle);
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#endif
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#ifdef _X11
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if (devILUhandle != NULL) {
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dlclose(devILUhandle);
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}
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#endif
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#ifdef _MACOSX
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// Cannot remove the image
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#endif
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devILUhandle = NULL;
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}
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