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package com.sun.media.sound;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.StringTokenizer;

Audio configuration class for exposing attributes specific to the platform or system.
Author:Kara Kytle, Florian Bomers
/** * Audio configuration class for exposing attributes specific to the platform or system. * * @author Kara Kytle * @author Florian Bomers */
final class Platform { // native library we need to load private static final String libName = "jsound"; private static boolean isNativeLibLoaded; // SYSTEM CHARACTERISTICS // vary according to hardware architecture // intel is little-endian. sparc is big-endian. private static boolean bigEndian; static { loadLibraries(); }
Private constructor.
/** * Private constructor. */
private Platform() { }
Dummy method for forcing initialization.
/** * Dummy method for forcing initialization. */
static void initialize() { }
Determine whether the system is big-endian.
/** * Determine whether the system is big-endian. */
static boolean isBigEndian() { return bigEndian; }
Load the native library or libraries.
/** * Load the native library or libraries. */
private static void loadLibraries() { // load the native library isNativeLibLoaded = true; try { AccessController.doPrivileged((PrivilegedAction<Void>) () -> { System.loadLibrary(libName); return null; }); } catch (Throwable t) { if (Printer.err) Printer.err("Couldn't load library "+libName+": "+t.toString()); isNativeLibLoaded = false; } if (isNativeLibLoaded) { bigEndian = nIsBigEndian(); } } static boolean isMidiIOEnabled() { return isNativeLibLoaded; } static boolean isPortsEnabled() { return isNativeLibLoaded; } static boolean isDirectAudioEnabled() { return isNativeLibLoaded; } // the following native method is implemented in Platform.c private static native boolean nIsBigEndian(); }