net.java.games.input.LinuxEventDevice Maven / Gradle / Ivy
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/**
* Copyright (C) 2003 Jeremy Booth ([email protected])
*
* 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.
* The name of the author may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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
*/
package net.java.games.input;
import java.io.IOException;
import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.ArrayList;
/**
* @author elias
*/
final class LinuxEventDevice implements LinuxDevice {
private final Map component_map = new HashMap();
private final Rumbler[] rumblers;
private final long fd;
private final String name;
private final LinuxInputID input_id;
private final List components;
private final Controller.Type type;
/* Closed state variable that protects the validity of the file descriptor.
* Access to the closed state must be synchronized
*/
private boolean closed;
/* Access to the key_states array could be synchronized, but
* it doesn't hurt to have multiple threads read/write from/to it
*/
private final byte[] key_states = new byte[NativeDefinitions.KEY_MAX/8 + 1];
public LinuxEventDevice(String filename) throws IOException {
long fd;
boolean detect_rumblers = true;
try {
fd = nOpen(filename, true);
} catch (IOException e) {
fd = nOpen(filename, false);
detect_rumblers = false;
}
this.fd = fd;
try {
this.name = getDeviceName();
this.input_id = getDeviceInputID();
this.components = getDeviceComponents();
if (detect_rumblers)
this.rumblers = enumerateRumblers();
else
this.rumblers = new Rumbler[]{};
this.type = guessType();
} catch (IOException e) {
close();
throw e;
}
}
private final static native long nOpen(String filename, boolean rw) throws IOException;
public final Controller.Type getType() {
return type;
}
private final static int countComponents(List components, Class id_type, boolean relative) {
int count = 0;
for (int i = 0; i < components.size(); i++) {
LinuxEventComponent component = (LinuxEventComponent)components.get(i);
if (id_type.isInstance(component.getIdentifier()) && relative == component.isRelative())
count++;
}
return count;
}
private final Controller.Type guessType() throws IOException {
Controller.Type type_from_usages = guessTypeFromUsages();
if (type_from_usages == Controller.Type.UNKNOWN)
return guessTypeFromComponents();
else
return type_from_usages;
}
private final Controller.Type guessTypeFromUsages() throws IOException {
byte[] usage_bits = getDeviceUsageBits();
if (isBitSet(usage_bits, NativeDefinitions.USAGE_MOUSE))
return Controller.Type.MOUSE;
else if (isBitSet(usage_bits, NativeDefinitions.USAGE_KEYBOARD))
return Controller.Type.KEYBOARD;
else if (isBitSet(usage_bits, NativeDefinitions.USAGE_GAMEPAD))
return Controller.Type.GAMEPAD;
else if (isBitSet(usage_bits, NativeDefinitions.USAGE_JOYSTICK))
return Controller.Type.STICK;
else
return Controller.Type.UNKNOWN;
}
private final Controller.Type guessTypeFromComponents() throws IOException {
List components = getComponents();
if (components.size() == 0)
return Controller.Type.UNKNOWN;
int num_rel_axes = countComponents(components, Component.Identifier.Axis.class, true);
int num_abs_axes = countComponents(components, Component.Identifier.Axis.class, false);
int num_keys = countComponents(components, Component.Identifier.Key.class, false);
int mouse_traits = 0;
int keyboard_traits = 0;
int joystick_traits = 0;
int gamepad_traits = 0;
if (name.toLowerCase().indexOf("mouse") != -1)
mouse_traits++;
if (name.toLowerCase().indexOf("keyboard") != -1)
keyboard_traits++;
if (name.toLowerCase().indexOf("joystick") != -1)
joystick_traits++;
if (name.toLowerCase().indexOf("gamepad") != -1)
gamepad_traits++;
int num_keyboard_button_traits = 0;
int num_mouse_button_traits = 0;
int num_joystick_button_traits = 0;
int num_gamepad_button_traits = 0;
// count button traits
for (int i = 0; i < components.size(); i++) {
LinuxEventComponent component = (LinuxEventComponent)components.get(i);
if (component.getButtonTrait() == Controller.Type.MOUSE)
num_mouse_button_traits++;
else if (component.getButtonTrait() == Controller.Type.KEYBOARD)
num_keyboard_button_traits++;
else if (component.getButtonTrait() == Controller.Type.GAMEPAD)
num_gamepad_button_traits++;
else if (component.getButtonTrait() == Controller.Type.STICK)
num_joystick_button_traits++;
}
if ((num_mouse_button_traits >= num_keyboard_button_traits) && (num_mouse_button_traits >= num_joystick_button_traits) && (num_mouse_button_traits >= num_gamepad_button_traits)) {
mouse_traits++;
} else if ((num_keyboard_button_traits >= num_mouse_button_traits) && (num_keyboard_button_traits >= num_joystick_button_traits) && (num_keyboard_button_traits >= num_gamepad_button_traits)) {
keyboard_traits++;
} else if ((num_joystick_button_traits >= num_keyboard_button_traits) && (num_joystick_button_traits >= num_mouse_button_traits) && (num_joystick_button_traits >= num_gamepad_button_traits)) {
joystick_traits++;
} else if ((num_gamepad_button_traits >= num_keyboard_button_traits) && (num_gamepad_button_traits >= num_mouse_button_traits) && (num_gamepad_button_traits >= num_joystick_button_traits)) {
gamepad_traits++;
}
if (num_rel_axes >= 2) {
mouse_traits++;
}
if (num_abs_axes >= 2) {
joystick_traits++;
gamepad_traits++;
}
if ((mouse_traits >= keyboard_traits) && (mouse_traits >= joystick_traits) && (mouse_traits >= gamepad_traits)) {
return Controller.Type.MOUSE;
} else if ((keyboard_traits >= mouse_traits) && (keyboard_traits >= joystick_traits) && (keyboard_traits >= gamepad_traits)) {
return Controller.Type.KEYBOARD;
} else if ((joystick_traits >= mouse_traits) && (joystick_traits >= keyboard_traits) && (joystick_traits >= gamepad_traits)) {
return Controller.Type.STICK;
} else if ((gamepad_traits >= mouse_traits) && (gamepad_traits >= keyboard_traits) && (gamepad_traits >= joystick_traits)) {
return Controller.Type.GAMEPAD;
} else
return null;
}
private final Rumbler[] enumerateRumblers() {
List rumblers = new ArrayList();
try {
int num_effects = getNumEffects();
if (num_effects <= 0)
return (Rumbler[])rumblers.toArray(new Rumbler[]{});
byte[] ff_bits = getForceFeedbackBits();
if (isBitSet(ff_bits, NativeDefinitions.FF_RUMBLE) && num_effects > rumblers.size()) {
rumblers.add(new LinuxRumbleFF(this));
}
} catch (IOException e) {
LinuxEnvironmentPlugin.logln("Failed to enumerate rumblers: " + e.getMessage());
}
return (Rumbler[])rumblers.toArray(new Rumbler[]{});
}
public final Rumbler[] getRumblers() {
return rumblers;
}
public final synchronized int uploadRumbleEffect(int id, int trigger_button, int direction, int trigger_interval, int replay_length, int replay_delay, int strong_magnitude, int weak_magnitude) throws IOException {
checkClosed();
return nUploadRumbleEffect(fd, id, direction, trigger_button, trigger_interval, replay_length, replay_delay, strong_magnitude, weak_magnitude);
}
private final static native int nUploadRumbleEffect(long fd, int id, int direction, int trigger_button, int trigger_interval, int replay_length, int replay_delay, int strong_magnitude, int weak_magnitude) throws IOException;
public final synchronized int uploadConstantEffect(int id, int trigger_button, int direction, int trigger_interval, int replay_length, int replay_delay, int constant_level, int constant_env_attack_length, int constant_env_attack_level, int constant_env_fade_length, int constant_env_fade_level) throws IOException {
checkClosed();
return nUploadConstantEffect(fd, id, direction, trigger_button, trigger_interval, replay_length, replay_delay, constant_level, constant_env_attack_length, constant_env_attack_level, constant_env_fade_length, constant_env_fade_level);
}
private final static native int nUploadConstantEffect(long fd, int id, int direction, int trigger_button, int trigger_interval, int replay_length, int replay_delay, int constant_level, int constant_env_attack_length, int constant_env_attack_level, int constant_env_fade_length, int constant_env_fade_level) throws IOException;
final void eraseEffect(int id) throws IOException {
nEraseEffect(fd, id);
}
private final static native void nEraseEffect(long fd, int ff_id) throws IOException;
public final synchronized void writeEvent(int type, int code, int value) throws IOException {
checkClosed();
nWriteEvent(fd, type, code, value);
}
private final static native void nWriteEvent(long fd, int type, int code, int value) throws IOException;
public final void registerComponent(LinuxAxisDescriptor desc, LinuxComponent component) {
component_map.put(desc, component);
}
public final LinuxComponent mapDescriptor(LinuxAxisDescriptor desc) {
return (LinuxComponent)component_map.get(desc);
}
public final Controller.PortType getPortType() throws IOException {
return input_id.getPortType();
}
public final LinuxInputID getInputID() {
return input_id;
}
private final LinuxInputID getDeviceInputID() throws IOException {
return nGetInputID(fd);
}
private final static native LinuxInputID nGetInputID(long fd) throws IOException;
public final int getNumEffects() throws IOException {
return nGetNumEffects(fd);
}
private final static native int nGetNumEffects(long fd) throws IOException;
private final int getVersion() throws IOException {
return nGetVersion(fd);
}
private final static native int nGetVersion(long fd) throws IOException;
public final synchronized boolean getNextEvent(LinuxEvent linux_event) throws IOException {
checkClosed();
return nGetNextEvent(fd, linux_event);
}
private final static native boolean nGetNextEvent(long fd, LinuxEvent linux_event) throws IOException;
public final synchronized void getAbsInfo(int abs_axis, LinuxAbsInfo abs_info) throws IOException {
checkClosed();
nGetAbsInfo(fd, abs_axis, abs_info);
}
private final static native void nGetAbsInfo(long fd, int abs_axis, LinuxAbsInfo abs_info) throws IOException;
private final void addKeys(List components) throws IOException {
byte[] bits = getKeysBits();
for (int i = 0; i < bits.length*8; i++) {
if (isBitSet(bits, i)) {
Component.Identifier id = LinuxNativeTypesMap.getButtonID(i);
components.add(new LinuxEventComponent(this, id, false, NativeDefinitions.EV_KEY, i));
}
}
}
private final void addAbsoluteAxes(List components) throws IOException {
byte[] bits = getAbsoluteAxesBits();
for (int i = 0; i < bits.length*8; i++) {
if (isBitSet(bits, i)) {
Component.Identifier id = LinuxNativeTypesMap.getAbsAxisID(i);
components.add(new LinuxEventComponent(this, id, false, NativeDefinitions.EV_ABS, i));
}
}
}
private final void addRelativeAxes(List components) throws IOException {
byte[] bits = getRelativeAxesBits();
for (int i = 0; i < bits.length*8; i++) {
if (isBitSet(bits, i)) {
Component.Identifier id = LinuxNativeTypesMap.getRelAxisID(i);
components.add(new LinuxEventComponent(this, id, true, NativeDefinitions.EV_REL, i));
}
}
}
public final List getComponents() {
return components;
}
private final List getDeviceComponents() throws IOException {
List components = new ArrayList();
byte[] evtype_bits = getEventTypeBits();
if (isBitSet(evtype_bits, NativeDefinitions.EV_KEY))
addKeys(components);
if (isBitSet(evtype_bits, NativeDefinitions.EV_ABS))
addAbsoluteAxes(components);
if (isBitSet(evtype_bits, NativeDefinitions.EV_REL))
addRelativeAxes(components);
return components;
}
private final byte[] getForceFeedbackBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.FF_MAX/8 + 1];
nGetBits(fd, NativeDefinitions.EV_FF, bits);
return bits;
}
private final byte[] getKeysBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.KEY_MAX/8 + 1];
nGetBits(fd, NativeDefinitions.EV_KEY, bits);
return bits;
}
private final byte[] getAbsoluteAxesBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.ABS_MAX/8 + 1];
nGetBits(fd, NativeDefinitions.EV_ABS, bits);
return bits;
}
private final byte[] getRelativeAxesBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.REL_MAX/8 + 1];
nGetBits(fd, NativeDefinitions.EV_REL, bits);
return bits;
}
private final byte[] getEventTypeBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.EV_MAX/8 + 1];
nGetBits(fd, 0, bits);
return bits;
}
private final static native void nGetBits(long fd, int ev_type, byte[] evtype_bits) throws IOException;
private final byte[] getDeviceUsageBits() throws IOException {
byte[] bits = new byte[NativeDefinitions.USAGE_MAX/8 + 1];
if (getVersion() >= 0x010001) {
nGetDeviceUsageBits(fd, bits);
}
return bits;
}
private final static native void nGetDeviceUsageBits(long fd, byte[] type_bits) throws IOException;
public final synchronized void pollKeyStates() throws IOException {
nGetKeyStates(fd, key_states);
}
private final static native void nGetKeyStates(long fd, byte[] states) throws IOException;
public final boolean isKeySet(int bit) {
return isBitSet(key_states, bit);
}
public final static boolean isBitSet(byte[] bits, int bit) {
return (bits[bit/8] & (1<<(bit%8))) != 0;
}
public final String getName() {
return name;
}
private final String getDeviceName() throws IOException {
return nGetName(fd);
}
private final static native String nGetName(long fd) throws IOException;
public synchronized final void close() throws IOException {
if (closed)
return;
closed = true;
LinuxEnvironmentPlugin.execute(new LinuxDeviceTask() {
protected final Object execute() throws IOException {
nClose(fd);
return null;
}
});
}
private final static native void nClose(long fd) throws IOException;
private final void checkClosed() throws IOException {
if (closed)
throw new IOException("Device is closed");
}
protected void finalize() throws IOException {
close();
}
}