[Java-game-lib-cvs] LWJGL/src/native/macosx macosx_al.c,NONE,1.1

Update of /cvsroot/java-game-lib/LWJGL/src/native/macosx
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv26957/src/native/macosx

Added Files:
	macosx_al.c 
Log Message:
OpenAL: Split platform dependent code from extal.c into platform subdirs. Made nCreate take a path instead of an array of paths.

--- NEW FILE: macosx_al.c ---
/* 
 * Copyright (c) 2002-2004 LWJGL Project
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are 
 * met:
 * 
 * * Redistributions of source code must retain the above copyright 
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'LWJGL' nor the names of 
 *   its contributors may be used to endorse or promote products derived 
 *   from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <mach-o/dyld.h>
#include <stdlib.h>
#include <string.h>
#include <CoreFoundation/CoreFoundation.h>
#include "extal.h"
#include "common_tools.h"

/**
 * $Id: macosx_al.c,v 1.1 2006/01/16 15:54:50 elias_naur Exp $
 *
 * This file contains the AL extension assigning mechanism
 *
 * @author Brian Matzon <br...@ma...>
 * @version $Revision: 1.1 $
 */

static const struct mach_header* handleOAL = NULL;
static CFBundleRef openal_bundle = NULL;

void *NativeGetFunctionPointer(const char *function) {
	char *mac_symbol_name = (char *)malloc((strlen(function) + 2)*sizeof(char));
	void *address = NULL;
	if (mac_symbol_name == NULL)
		return NULL;
	mac_symbol_name[0] = '_';
	strcpy(&(mac_symbol_name[1]), function);
	if (handleOAL != NULL) {
		NSSymbol symbol = NSLookupSymbolInImage(handleOAL, mac_symbol_name, NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR);
		if (symbol != NULL) {
			address = NSAddressOfSymbol(symbol);
		}
	} else if (openal_bundle != NULL) {
		CFStringRef cf_function = CFStringCreateWithCString(NULL, function, kCFStringEncodingUTF8);
		address = CFBundleGetFunctionPointerForName(openal_bundle, cf_function);
		CFRelease(cf_function);
	}
	free(mac_symbol_name);
	return address;
}

static CFBundleRef tryLoadFramework(JNIEnv *env) {
	CFStringRef framework_path = CFSTR("/System/Library/Frameworks/OpenAL.framework");
	if (framework_path == NULL) {
		printfDebugJava(env, "Failed to allocate string");
		return NULL;
	}
	CFURLRef url = CFURLCreateWithFileSystemPath(NULL, framework_path, kCFURLPOSIXPathStyle, TRUE);
	if (url == NULL) {
		printfDebugJava(env, "Failed to allocate URL");
		return NULL;
	}
	CFBundleRef openal_bundle = CFBundleCreate(NULL, url);
	CFRelease(url);
	return openal_bundle;
}

bool tryLoadLibrary(JNIEnv *env, jstring path) {
	const char *path_str = (*env)->GetStringUTFChars(env, path, NULL);
	printfDebugJava(env, "Testing '%s'", path_str);
	handleOAL = NSAddImage(path_str, NSADDIMAGE_OPTION_RETURN_ON_ERROR);
	if (handleOAL != NULL) {
		printfDebugJava(env, "Found OpenAL at '%s'", path_str);
	}
	(*env)->ReleaseStringUTFChars(env, path, path_str);
	openal_bundle = tryLoadFramework(env);
	if (openal_bundle != NULL)
		printfDebugJava(env, "Found OpenAL Bundle");
	return handleOAL != NULL || openal_bundle != NULL;
}

/**
 * Unloads the OpenAL Library
 */
void UnLoadOpenAL() {
	if (openal_bundle != NULL) {
		CFRelease(openal_bundle);
		openal_bundle = NULL;
	}
}