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/*
* %W% %E%
*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
/*****************************************************************************
* Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
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* - Redistribution of source code must retain the above copyright notice,
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package net.java.games.input;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.List;
import java.util.ArrayList;
import java.io.File;
import java.io.IOException;
import net.java.games.util.plugins.Plugin;
/** DirectInput implementation of controller environment
* @author martak
* @author elias
* @version 1.0
*/
public final class RawInputEnvironmentPlugin extends ControllerEnvironment implements Plugin {
private static boolean supported = false;
/**
* Static utility method for loading native libraries.
* It will try to load from either the path given by
* the net.java.games.input.librarypath property
* or through System.loadLibrary().
*
*/
static void loadLibrary(final String lib_name) {
AccessController.doPrivileged(
new PrivilegedAction() {
public final Object run() {
try {
String lib_path = System.getProperty("net.java.games.input.librarypath");
if (lib_path != null)
System.load(lib_path + File.separator + System.mapLibraryName(lib_name));
else
System.loadLibrary(lib_name);
} catch (UnsatisfiedLinkError e) {
e.printStackTrace();
supported = false;
}
return null;
}
});
}
static String getPrivilegedProperty(final String property) {
return (String)AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return System.getProperty(property);
}
});
}
static String getPrivilegedProperty(final String property, final String default_value) {
return (String)AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return System.getProperty(property, default_value);
}
});
}
static {
String osName = getPrivilegedProperty("os.name", "").trim();
if(osName.startsWith("Windows")) {
supported = true;
if("x86".equals(getPrivilegedProperty("os.arch"))) {
loadLibrary("jinput-raw");
} else {
loadLibrary("jinput-raw_64");
}
}
}
private final Controller[] controllers;
/** Creates new DirectInputEnvironment */
public RawInputEnvironmentPlugin() {
RawInputEventQueue queue;
Controller[] controllers = new Controller[]{};
if(isSupported()) {
try {
queue = new RawInputEventQueue();
controllers = enumControllers(queue);
} catch (IOException e) {
log("Failed to enumerate devices: " + e.getMessage());
}
}
this.controllers = controllers;
}
public final Controller[] getControllers() {
return controllers;
}
private final static SetupAPIDevice lookupSetupAPIDevice(String device_name, List setupapi_devices) {
/* First, replace # with / in the device name, since that
* seems to be the format in raw input device name
*/
device_name = device_name.replaceAll("#", "\\\\").toUpperCase();
for (int i = 0; i < setupapi_devices.size(); i++) {
SetupAPIDevice device = (SetupAPIDevice)setupapi_devices.get(i);
if (device_name.indexOf(device.getInstanceId().toUpperCase()) != -1)
return device;
}
return null;
}
private final static void createControllersFromDevices(RawInputEventQueue queue, List controllers, List devices, List setupapi_devices) throws IOException {
List active_devices = new ArrayList();
for (int i = 0; i < devices.size(); i++) {
RawDevice device = (RawDevice)devices.get(i);
SetupAPIDevice setupapi_device = lookupSetupAPIDevice(device.getName(), setupapi_devices);
if (setupapi_device == null) {
/* Either the device is an RDP or we failed to locate the
* SetupAPI device that matches
*/
continue;
}
RawDeviceInfo info = device.getInfo();
Controller controller = info.createControllerFromDevice(device, setupapi_device);
if (controller != null) {
controllers.add(controller);
active_devices.add(device);
}
}
queue.start(active_devices);
}
private final static native void enumerateDevices(RawInputEventQueue queue, List devices) throws IOException;
private final Controller[] enumControllers(RawInputEventQueue queue) throws IOException {
List controllers = new ArrayList();
List devices = new ArrayList();
enumerateDevices(queue, devices);
List setupapi_devices = enumSetupAPIDevices();
createControllersFromDevices(queue, controllers, devices, setupapi_devices);
Controller[] controllers_array = new Controller[controllers.size()];
controllers.toArray(controllers_array);
return controllers_array;
}
public boolean isSupported() {
return supported;
}
/*
* The raw input API, while being able to access
* multiple mice and keyboards, is a bit raw (hah)
* since it lacks some important features:
*
* 1. The list of keyboards and the list of mice
* both include useless Terminal Server
* devices (RDP_MOU and RDP_KEY) that we'd
* like to skip.
* 2. The device names returned by GetRawInputDeviceInfo()
* are not for display, but instead synthesized
* from a combination of a device instance id
* and a GUID.
*
* A solution to both problems is the SetupAPI that allows
* us to enumerate all keyboard and mouse devices and fetch their
* descriptive names and at the same time filter out the unwanted
* RDP devices.
*/
private final static List enumSetupAPIDevices() throws IOException {
List devices = new ArrayList();
nEnumSetupAPIDevices(getKeyboardClassGUID(), devices);
nEnumSetupAPIDevices(getMouseClassGUID(), devices);
return devices;
}
private final static native void nEnumSetupAPIDevices(byte[] guid, List devices) throws IOException;
private final static native byte[] getKeyboardClassGUID();
private final static native byte[] getMouseClassGUID();
} // class DirectInputEnvironment
