Linux rumbler support

IT DOES NOT WORK YET though.

I'm in contact with the kernel module developers as I think it's a kernel bug

coreAPI/src/java/net/java/games/input/test/RumbleTest.java

@@ -24,7 +24,7 @@ public class RumbleTest {
             Rumbler[] rumblers = controllers[i].getRumblers();
             System.out.println("Found " + rumblers.length + " rumblers");
             for(int j=0;j<rumblers.length;j++) {
-                System.out.println("Rumbler " + rumblers[j].getAxisName() + " on axis " + rumblers[j].getAxisIdentifier().getName());
+                System.out.println("Rumbler " + rumblers[j].getAxisName() + " on axis " + rumblers[j].getAxisIdentifier());
                 System.out.println("Rumbling with intensity: " + 0.5f);
                 rumblers[j].rumble(0.5f);
                 try {

plugins/linux/src/java/net/java/games/input/LinuxDevice.java

@@ -176,6 +176,18 @@ public class LinuxDevice extends AbstractController {
         components = (Component[]) axesArray.toArray(components);
         
         guessType();
+		
+		if(getFFEnabled()) {
+			System.out.println("Java code thinks FF is enabled for device " + name);
+			Rumbler[] tempRumblers = rumblers;
+			rumblers = new Rumbler[rumblers.length+1];
+			System.arraycopy(tempRumblers,0,rumblers,0,tempRumblers.length);
+			rumblers[rumblers.length-1] = new LinuxDeviceRumbler(nativeID);
+			System.out.println("rumblers.length: " + rumblers.length);
+			System.out.println("getRumblers().length: " + getRumblers().length);
+		} else {
+			System.out.println("Java code thinks FF is disabled for device " + name);
+		}
     }
     
     /*public Axis[] getAxes(){
@@ -565,6 +577,13 @@ public class LinuxDevice extends AbstractController {
         getNativeSupportedRelAxes(nativeID, supportedRelAxes);
     }
 	
+	/** Returns the status of FF support for this device
+	 * 
+	 */
+	private boolean getFFEnabled() {
+		return getNativeFFEnabled(nativeID);
+	}
+    
     /** Native call to get the supported absolute axes for a device
      * @param deviceID The native device number
      * @param supportedAbsAxes aray to populate
@@ -612,6 +631,12 @@ public class LinuxDevice extends AbstractController {
      */    
     private native int getNativePortType(int deviceID);
 	
+	/** Gets the status of FF support for this device
+     * @param deviceID The device to get the port type for
+     * @return The port type
+	 */
+	private native boolean getNativeFFEnabled(int deviceID);
+    
     /**
      * A device that represents a joystick coolie hat.
      * @author Jeremy Booth (jeremy@newdawnsoftware.com)

plugins/linux/src/native/Device.h

@@ -64,6 +64,8 @@ class Device {
     virtual int getAbsAxisMinimum(int axisNumber) = 0;
     virtual int getAbsAxisMaximum(int axisNumber) = 0;
     virtual int getAbsAxisFuzz(int axisNumber) = 0;
+    virtual bool getFFEnabled() = 0;
+    virtual void rumble(float force) = 0;
 };
 
 #endif //eventInterface_Device_h

plugins/linux/src/native/EventDevice.cpp

@@ -55,6 +55,27 @@ EventDevice::EventDevice(char *deviceFileName) {
 		inited = 0;
 		return;
 	  }
+  } else {
+      if(ioctl(fd, EVIOCGBIT(EV_FF, sizeof(ff_bitmask)), ff_bitmask) < 0) {
+	    char errorMessage[512];
+	    sprintf(errorMessage, "Error reading device %s\n", deviceFileName);
+	    perror(errorMessage);
+	  }
+	  if(getBit(FF_RUMBLE, ff_bitmask)==1) {
+	  	ffSupported = 1;
+	  	//LOG_TRACE("Force feedback supported for %s\n", deviceFileName);
+		  int n_effects = 0;
+		  if (ioctl(fd, EVIOCGEFFECTS, &n_effects) == -1) {
+		  	char errorMessage[512];
+		  	sprintf(errorMessage, "Failed to get number of effects for device %s\n", deviceFileName);
+	        perror(errorMessage);
+	      }
+	      LOG_TRACE("Device %s supports %d simultanious effects\n", deviceFileName, n_effects);
+	      effect_playing = false;
+	  } else {
+	  	ffSupported = 0;
+	  	LOG_TRACE("Force feedback not supported for %s %d\n", deviceFileName, getBit(FF_RUMBLE, ff_bitmask));
+	  }
   }
 
   if(ioctl(fd, EVIOCGNAME(sizeof(tempName)), tempName) < 0) {
@@ -105,9 +126,7 @@ EventDevice::EventDevice(char *deviceFileName) {
     numAbsAxes = 0;
   }
 
-  if(getBit(EV_FF, evtype_bitmask)) {
+  if(!getBit(EV_FF, evtype_bitmask)) {
-    ffSupported = 1;
-  } else {
     ffSupported = 0;
   }
 
@@ -382,3 +401,56 @@ int EventDevice::getAbsAxisMaximum(int axisNumber) {
 int EventDevice::getAbsAxisFuzz(int axisNumber) {
   return abs_features[axisNumber].fuzz;
 }
+
+bool EventDevice::getFFEnabled() {
+	if(ffSupported==1) {
+		//LOG_TRACE("FF is supported for %s\n", getName());
+		return true;
+	}
+	//LOG_TRACE("FF is not supported for %s\n", getName());
+	return false;
+}
+
+void EventDevice::rumble(float force) {
+	if(force>1) force=1;
+	if(force<-1) force=-1;
+	LOG_TRACE("Rumbling at %d%%, (shh, pretend)\n", (int)(force*100));
+	
+	if(effect_playing==true) {
+		stop.type=EV_FF;
+		stop.code = effect.id;
+		stop.value=0;
+		
+		if (ioctl(fd, EVIOCRMFF, effect.id) == -1) {
+		        perror("Remove effect");
+		}
+    
+	}
+	
+	effect.type=FF_RUMBLE;
+	effect.id=-1;
+	effect.u.rumble.strong_magnitude = (int)(0x8000*force);
+    effect.u.rumble.weak_magnitude = (int)(0xc000*force);
+    effect.replay.length = 5000;
+    effect.replay.delay = 0;
+
+    if (ioctl(fd, EVIOCSFF, &effect) == -1) {
+            perror("Upload effect");
+    }
+    
+    play.type = EV_FF;
+    play.code=effect.id;
+    play.value=1;
+    
+	if(effect_playing==true) {
+		if (write(fd, (const void*) &stop, sizeof(stop)) == -1) {
+	        perror("Failed to stop effect");
+	    }
+	}
+    if (write(fd, (const void*) &play, sizeof(play)) == -1) {
+        perror("Failed to play effect");
+    } else {
+    	effect_playing=true;
+    }
+    
+}

plugins/linux/src/native/EventDevice.h

@@ -56,10 +56,14 @@ class EventDevice : public Device {
     uint8_t key_bitmask[KEY_MAX/8 + 1];
     uint8_t rel_bitmask[REL_MAX/8 + 1];
     uint8_t abs_bitmask[ABS_MAX/8 + 1];
+    uint8_t ff_bitmask[16];
     struct input_absinfo *abs_features;
     int absAxisLookup[ABS_MAX];
     int relAxisLookup[REL_MAX];
     int buttonLookup[KEY_MAX];
+	struct ff_effect effect;
+	struct input_event play, stop;
+	bool effect_playing;
 
   public:
     EventDevice(char *deviceFilename);
@@ -80,7 +84,8 @@ class EventDevice : public Device {
     int getAbsAxisMaximum(int axisNumber);
     int getAbsAxisFuzz(int axisNumber);
     int isValidDevice();
-
+    bool getFFEnabled(); 
+	void rumble(float force);
 };
 
 #endif //eventInterface_eventDevice_h

plugins/linux/src/native/JoystickDevice.cpp

@@ -186,3 +186,11 @@ int JoystickDevice::getAbsAxisMaximum(int axisNumber) {
 int JoystickDevice::getAbsAxisFuzz(int axisNumber) {
   return 0;
 }
+
+bool JoystickDevice::getFFEnabled() {
+	return false;
+}
+
+void JoystickDevice::rumble(float force) {
+	return;
+}

plugins/linux/src/native/JoystickDevice.h

@@ -62,7 +62,8 @@ class JoystickDevice : public Device {
     int getAbsAxisMaximum(int axisNumber);
     int getAbsAxisFuzz(int axisNumber);
     int isValidDevice();
-
+	bool getFFEnabled();
+	void rumble(float force);
 };
 
 #endif //eventInterface_eventDevice_h

plugins/linux/src/native/MixedDevice.cpp

@@ -113,3 +113,11 @@ int MixedDevice::getAbsAxisMaximum(int axisNumber) {
 int MixedDevice::getAbsAxisFuzz(int axisNumber) {
   return joystickDevice->getAbsAxisFuzz(axisNumber);
 }
+
+bool MixedDevice::getFFEnabled() {
+	return eventDevice->getFFEnabled();
+}
+
+void MixedDevice::rumble(float force) {
+	eventDevice->rumble(force);
+}

plugins/linux/src/native/MixedDevice.h

@@ -62,7 +62,8 @@ class MixedDevice : public Device {
     int getAbsAxisMinimum(int axisNumber);
     int getAbsAxisMaximum(int axisNumber);
     int getAbsAxisFuzz(int axisNumber);
-
+	bool getFFEnabled();
+	void rumble(float force);
 };
 
 #endif //eventInterface_eventDevice_h

plugins/linux/src/native/jinput.cpp

@@ -32,6 +32,7 @@
 #include "net_java_games_input_LinuxDevice.h"
 #include "net_java_games_input_LinuxEnvironmentPlugin.h"
 #include "net_java_games_input_LinuxKeyboard.h"
+#include "net_java_games_input_LinuxDeviceRumbler.h"
 
 #include "Device.h"
 #include "EventDevice.h"
@@ -302,7 +303,7 @@ JNIEXPORT jint JNICALL Java_net_java_games_input_LinuxDevice_getNativePortType
   (JNIEnv *, jobject, jint deviceID) {
 
   LOG_TRACE("Getting bus type for device %d\n", deviceID);
-  jinputDeviceList[deviceID]->getBusType();
+  return jinputDeviceList[deviceID]->getBusType();
 }
 
 /* Inaccessible static: NO_RUMBLERS */
@@ -357,5 +358,32 @@ JNIEXPORT jint JNICALL Java_net_java_games_input_LinuxKeyboard_getNativePortType
   (JNIEnv *, jobject, jint deviceID) {
 
   LOG_TRACE("Getting bus type for keyboard device %d\n", deviceID);
-  jinputDeviceList[deviceID]->getBusType();
+  return jinputDeviceList[deviceID]->getBusType();
+}
+
+/*
+ * Class:     net_java_games_input_LinuxDevice
+ * Method:    getFFEnabled
+ * Signature: (I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_net_java_games_input_LinuxDevice_getNativeFFEnabled
+  (JNIEnv *, jobject, jint deviceID) {
+  	
+  LOG_TRACE("Getting FFEnabled status for device %d\n", deviceID);
+  if(jinputDeviceList[deviceID]->getFFEnabled()) {
+  	//LOG_TRACE("jinput lib thinks device %d is ff enabled\n", deviceID);
+  	return JNI_TRUE;
+  }
+  	//LOG_TRACE("jinput lib thinks device %d is ff disabled\n", deviceID);
+  return JNI_FALSE;
+}
+
+/*
+ * Class:     net_java_games_input_LinuxRumblerDevice
+ * Method:    nativeRumble
+ * Signature: (IF)V
+ */
+JNIEXPORT void JNICALL Java_net_java_games_input_LinuxDeviceRumbler_nativeRumble
+  (JNIEnv *, jobject, jint deviceID, jfloat force) {
+  	jinputDeviceList[deviceID]->rumble(force);
 }

plugins/linux/src/native/net_java_games_input_LinuxDevice.h

@@ -74,6 +74,14 @@ JNIEXPORT jint JNICALL Java_net_java_games_input_LinuxDevice_getNativeAbsAxisMin
 JNIEXPORT jint JNICALL Java_net_java_games_input_LinuxDevice_getNativePortType
   (JNIEnv *, jobject, jint);
   
+/*
+ * Class:     net_java_games_input_LinuxDevice
+ * Method:    getFFEnabled
+ * Signature: (I)Z
+ */
+JNIEXPORT jboolean JNICALL Java_net_java_games_input_LinuxDevice_getNativeFFEnabled
+  (JNIEnv *, jobject, jint);
+
 #ifdef __cplusplus
 }
 #endif

plugins/linux/src/native/net_java_games_input_LinuxDeviceRumbler.h

@@ -0,0 +1,20 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class net_java_games_input_LinuxDeviceRumbler */
+
+#ifndef _Included_net_java_games_input_LinuxDeviceRumbler
+#define _Included_net_java_games_input_LinuxDeviceRumbler
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     net_java_games_input_LinuxDeviceRumbler
+ * Method:    nativeRumble
+ * Signature: (IF)V
+ */
+JNIEXPORT void JNICALL Java_net_java_games_input_LinuxDeviceRumbler_nativeRumble
+  (JNIEnv *, jobject, jint, jfloat);
+#ifdef __cplusplus
+}
+#endif
+#endif