From 7251a38930cd4c03ffe21a2ea705290bdb94bcc6 Mon Sep 17 00:00:00 2001
From: Elias Naur <elias.naur@gmail.com>
Date: Wed, 9 Mar 2005 13:06:17 +0000
Subject: [PATCH] OpenAL: Moved more library loading from native to java

---
 src/java/org/lwjgl/openal/AL.java | 63 ++++++++++++++-------------
 src/native/common/extal.c         | 71 ++++---------------------------
 src/native/common/extal.h         |  3 +-
 3 files changed, 42 insertions(+), 95 deletions(-)

diff --git a/src/java/org/lwjgl/openal/AL.java b/src/java/org/lwjgl/openal/AL.java
index 59d5abe1..69555bbe 100644
--- a/src/java/org/lwjgl/openal/AL.java
+++ b/src/java/org/lwjgl/openal/AL.java
@@ -35,6 +35,9 @@ import java.io.File;
 import java.lang.reflect.Method;
 import java.util.StringTokenizer;
 
+import java.util.List;
+import java.util.ArrayList;
+
 import org.lwjgl.LWJGLException;
 import org.lwjgl.Sys;
 
@@ -130,49 +133,49 @@ public final class AL {
 
 	private static String[] getOALPaths() throws LWJGLException {
 		// need to pass path of possible locations of OAL to native side
-		String libpath = System.getProperty("java.library.path");
-		String seperator = System.getProperty("path.separator");
-		String jwsLibname;
-
+		List possible_paths = new ArrayList();
+		
 		String osName = System.getProperty("os.name");
+
+		String libname;
 		if (osName.startsWith("Win")) {
-			jwsLibname = "lwjglaudio";
+			libname = "lwjglaudio";
 		} else if (osName.startsWith("Lin")) {
-			jwsLibname = "openal";
+			libname = "openal";
 		} else if (osName.startsWith("Mac")) {
-			jwsLibname = "openal";
+			libname = "openal";
 		} else {
 			throw new LWJGLException("Unknown platform: "+osName);
 		}
 		
-		String jwsPath = getPathFromClassLoader(jwsLibname);
-		if (jwsPath != null) {
-			Sys.log("getPathFromClassLoader: Path found: " + jwsPath);
-			libpath += seperator
-				+ jwsPath.substring(0, jwsPath.lastIndexOf(File.separator));
-		}
-		String lwjgl_jws_path = getPathFromClassLoader("lwjgl");
-		if (lwjgl_jws_path != null) {
-			Sys.log("getPathFromClassLoader: Path found: " + lwjgl_jws_path);
-			libpath += seperator
-				+ lwjgl_jws_path.substring(0, lwjgl_jws_path.lastIndexOf(File.separator));
-		}
-		StringTokenizer st = new StringTokenizer(libpath, seperator);
+		String platform_lib_name = System.mapLibraryName(libname);
 
-		//create needed string array
-		String[] oalPaths = new String[st.countTokens() + 1];
-
-		//build paths
-		for (int i = 0; i < oalPaths.length - 1; i++) {
-			oalPaths[i] = st.nextToken() + File.separator;
+		// Add all possible paths from java.library.path
+		String java_library_path = System.getProperty("java.library.path");
+		StringTokenizer st = new StringTokenizer(System.getProperty("java.library.path"), File.pathSeparator);
+		while (st.hasMoreTokens()) {
+			String path = st.nextToken();
+			possible_paths.add(path + File.separator + platform_lib_name);
 		}
-
-		for(int i=0 ; i<oalPaths.length; i++) {
-			Sys.log("Will search " + oalPaths[i] + " for " + jwsLibname);
+		
+		String classloader_path = getPathFromClassLoader(libname);
+		if (classloader_path != null) {
+			Sys.log("getPathFromClassLoader: Path found: " + classloader_path);
+			possible_paths.add(classloader_path);
+		}
+		String lwjgl_classloader_path = getPathFromClassLoader("lwjgl");
+		if (lwjgl_classloader_path != null) {
+			Sys.log("getPathFromClassLoader: Path found: " + lwjgl_classloader_path);
+			possible_paths.add(lwjgl_classloader_path.substring(0, lwjgl_classloader_path.lastIndexOf(File.separator))
+				+ File.separator + platform_lib_name);
 		}
 
 		//add cwd path
-		oalPaths[oalPaths.length - 1] = "";
+		possible_paths.add(platform_lib_name);
+		//create needed string array
+		String[] oalPaths = new String[possible_paths.size()];
+		possible_paths.toArray(oalPaths);
+
 		return oalPaths;
 	}
 
diff --git a/src/native/common/extal.c b/src/native/common/extal.c
index 6128384d..c20cdae1 100644
--- a/src/native/common/extal.c
+++ b/src/native/common/extal.c
@@ -50,22 +50,20 @@
  */
 #ifdef _WIN32
 /* Handle to OpenAL Library */
-HMODULE handleOAL;
+static HMODULE handleOAL;
 #endif
 #ifdef _X11
-void* handleOGG;
-void* handleVorbis;
-void* handleVorbisFile;
-void* handleOAL;
+static void* handleOAL;
 #endif
 #ifdef _MACOSX
 #include <mach-o/dyld.h>
 #include <stdlib.h>
 #include <string.h>
-const struct mach_header* handleOAL = NULL;
+static const struct mach_header* handleOAL;
 #endif
 
-alGetProcAddressPROC alGetProcAddress = NULL;
+typedef ALvoid* (ALAPIENTRY *alGetProcAddressPROC)( ALubyte* fname );
+static alGetProcAddressPROC alGetProcAddress = NULL;
 
 /* Loads OpenAL */
 static bool LoadOpenAL(JNIEnv *env, jobjectArray oalPaths);
@@ -108,35 +106,6 @@ static void* extal_GetProcAddress(const char* function) {
 	return p;
 }
 
-/**
- * Concatenate two strings
- */
-static char *concatenate(const char *str1, const char *str2) {
-	int length1 = strlen(str1);
-	int length2 = strlen(str2);
-	char *str = (char *)calloc(length1 + length2 + 1, sizeof(char));
-	strncpy(str, str1, length1);
-	strncpy(str + length1, str2, length2 + 1);
-	return str;
-}
-
-#ifdef _X11
-static void closeVorbisLibs(void) {
-	if (handleOGG != NULL) {
-		dlclose(handleOGG);
-		handleOGG = NULL;
-	}
-	if (handleVorbis != NULL) {
-		dlclose(handleVorbis);
-		handleVorbis = NULL;
-	}
-	if (handleVorbisFile != NULL) {
-		dlclose(handleVorbisFile);
-		handleVorbisFile = NULL;
-	}
-}
-#endif
-
 /**
  * Loads the OpenAL Library
  */
@@ -145,7 +114,6 @@ static bool LoadOpenAL(JNIEnv *env, jobjectArray oalPaths) {
 	int i;
 	jstring path;
 	char *path_str;
-	char *lib_str;
 
 	printfDebug("Found %d OpenAL paths\n", (int)pathcount);
 	for(i=0;i<pathcount;i++) {
@@ -153,35 +121,13 @@ static bool LoadOpenAL(JNIEnv *env, jobjectArray oalPaths) {
 		path_str = GetStringNativeChars(env, path);
 		printfDebug("Testing '%s'\n", path_str);
 #ifdef _WIN32
-		lib_str = concatenate(path_str, "lwjglaudio.dll");
-		handleOAL = LoadLibrary(lib_str);
-		free(lib_str);
+		handleOAL = LoadLibrary(path_str);
 #endif
 #ifdef _X11
-		lib_str = concatenate(path_str, "libogg.so.0");
-		handleOGG = dlopen(lib_str, RTLD_LAZY);
-		free(lib_str);
-
-		lib_str = concatenate(path_str, "libvorbis.so.0");
-		handleVorbis = dlopen(lib_str, RTLD_LAZY);
-		free(lib_str);
-
-		lib_str = concatenate(path_str, "libvorbisfile.so.3");
-		handleVorbisFile = dlopen(lib_str, RTLD_LAZY);
-		free(lib_str);
-
-		lib_str = concatenate(path_str, "libopenal.so");
-		handleOAL = dlopen(lib_str, RTLD_LAZY);
-		free(lib_str);
-
-		if (handleOAL == NULL) {
-			closeVorbisLibs();
-		}
+		handleOAL = dlopen(path_str, RTLD_LAZY);
 #endif
 #ifdef _MACOSX
-		lib_str = concatenate(path_str, "openal.dylib");
-		handleOAL = NSAddImage(lib_str, NSADDIMAGE_OPTION_RETURN_ON_ERROR);
-		free(lib_str);
+		handleOAL = NSAddImage(path_str, NSADDIMAGE_OPTION_RETURN_ON_ERROR);
 #endif
 		if (handleOAL != NULL) {
 			printfDebug("Found OpenAL at '%s'\n", path_str);
@@ -207,7 +153,6 @@ static void UnLoadOpenAL() {
 		dlclose(handleOAL);
 		handleOAL = NULL;
 	}
-	closeVorbisLibs();
 #endif
 #ifdef _MACOSX
 	// Cannot remove the image
diff --git a/src/native/common/extal.h b/src/native/common/extal.h
index 37b26c34..eacdaafc 100644
--- a/src/native/common/extal.h
+++ b/src/native/common/extal.h
@@ -96,8 +96,7 @@ extern "C" {
 void InitializeOpenAL(JNIEnv *env, jobjectArray oalPaths);
 void DeInitializeOpenAL();
 
-typedef ALvoid*	    (ALAPIENTRY *alGetProcAddressPROC)( ALubyte* fname );
-extern alGetProcAddressPROC alGetProcAddress;
+//extern alGetProcAddressPROC alGetProcAddress;
 
 typedef ALCcontext* (ALCAPIENTRY *alcGetCurrentContextPROC)(ALCvoid);
 extern alcGetCurrentContextPROC alcGetCurrentContext;