Add Rumble to Android

android/app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.VIBRATE" />
 
     <application
         android:allowBackup="true"

android/app/src/main/cpp/chiaki-jni.c

@@ -133,6 +133,7 @@ typedef struct android_chiaki_session_t
 	jmethodID java_session_event_connected_meth;
 	jmethodID java_session_event_login_pin_request_meth;
 	jmethodID java_session_event_quit_meth;
+	jmethodID java_session_event_rumble_meth;
 	jfieldID java_controller_state_buttons;
 	jfieldID java_controller_state_l2_state;
 	jfieldID java_controller_state_r2_state;
@@ -192,6 +193,14 @@ static void android_chiaki_event_cb(ChiakiEvent *event, void *user)
 			free(reason_str);
 			break;
 		}
+		case CHIAKI_EVENT_RUMBLE:
+			E->CallVoidMethod(env, session->java_session,
+							  session->java_session_event_rumble_meth,
+							  (jint)event->rumble.left,
+							  (jint)event->rumble.right);
+			break;
+		default:
+			break;
 	}
 
 	(*global_vm)->DetachCurrentThread(global_vm);
@@ -310,6 +319,7 @@ JNIEXPORT void JNICALL JNI_FCN(sessionCreate)(JNIEnv *env, jobject obj, jobject
 	session->java_session_event_connected_meth = E->GetMethodID(env, session->java_session_class, "eventConnected", "()V");
 	session->java_session_event_login_pin_request_meth = E->GetMethodID(env, session->java_session_class, "eventLoginPinRequest", "(Z)V");
 	session->java_session_event_quit_meth = E->GetMethodID(env, session->java_session_class, "eventQuit", "(ILjava/lang/String;)V");
+	session->java_session_event_rumble_meth = E->GetMethodID(env, session->java_session_class, "eventRumble", "(II)V");
 
 	jclass controller_state_class = E->FindClass(env, BASE_PACKAGE"/ControllerState");
 	session->java_controller_state_buttons = E->GetFieldID(env, controller_state_class, "buttons", "I");

android/app/src/main/java/com/metallic/chiaki/common/Preferences.kt

@@ -68,11 +68,16 @@ class Preferences(context: Context)
 		get() = sharedPreferences.getBoolean(onScreenControlsEnabledKey, true)
 		set(value) { sharedPreferences.edit().putBoolean(onScreenControlsEnabledKey, value).apply() }
 
-	val touchpadOnlyEnabledKey get() = resources.getString(R.string.preferences_touchpad_only_key)
+	val touchpadOnlyEnabledKey get() = resources.getString(R.string.preferences_touchpad_only_enabled_key)
 	var touchpadOnlyEnabled
 		get() = sharedPreferences.getBoolean(touchpadOnlyEnabledKey, false)
 		set(value) { sharedPreferences.edit().putBoolean(touchpadOnlyEnabledKey, value).apply() }
 
+	val rumbleEnabledKey get() = resources.getString(R.string.preferences_rumble_enabled_key)
+	var rumbleEnabled
+		get() = sharedPreferences.getBoolean(rumbleEnabledKey, true)
+		set(value) { sharedPreferences.edit().putBoolean(rumbleEnabledKey, value).apply() }
+
 	val logVerboseKey get() = resources.getString(R.string.preferences_log_verbose_key)
 	var logVerbose
 		get() = sharedPreferences.getBoolean(logVerboseKey, false)

android/app/src/main/java/com/metallic/chiaki/lib/Chiaki.kt

@@ -289,6 +289,7 @@ sealed class Event
 object ConnectedEvent: Event()
 data class LoginPinRequestEvent(val pinIncorrect: Boolean): Event()
 data class QuitEvent(val reason: QuitReason, val reasonString: String?): Event()
+data class RumbleEvent(val left: UByte, val right: UByte): Event()
 
 class CreateError(val errorCode: ErrorCode): Exception("Failed to create a native object: $errorCode")
 
@@ -344,6 +345,11 @@ class Session(connectInfo: ConnectInfo, logFile: String?, logVerbose: Boolean)
 		event(QuitEvent(QuitReason(reasonValue), reasonString))
 	}
 
+	private fun eventRumble(left: Int, right: Int)
+	{
+		event(RumbleEvent(left.toUByte(), right.toUByte()))
+	}
+
 	fun setSurface(surface: Surface)
 	{
 		ChiakiNative.sessionSetSurface(nativePtr, surface)

android/app/src/main/java/com/metallic/chiaki/session/StreamSession.kt

@@ -25,6 +25,8 @@ class StreamSession(val connectInfo: ConnectInfo, val logManager: LogManager, va
 
 	private val _state = MutableLiveData<StreamState>(StreamStateIdle)
 	val state: LiveData<StreamState> get() = _state
+	private val _rumbleState = MutableLiveData<RumbleEvent>(RumbleEvent(0U, 0U))
+	val rumbleState: LiveData<RumbleEvent> get() = _rumbleState
 
 	var surfaceTexture: SurfaceTexture? = null
 
@@ -86,6 +88,7 @@ class StreamSession(val connectInfo: ConnectInfo, val logManager: LogManager, va
 					event.pinIncorrect
 				)
 			)
+			is RumbleEvent -> _rumbleState.postValue(event)
 		}
 	}
 

android/app/src/main/java/com/metallic/chiaki/settings/SettingsFragment.kt

@@ -26,6 +26,7 @@ class DataStore(val preferences: Preferences): PreferenceDataStore()
 	{
 		preferences.logVerboseKey -> preferences.logVerbose
 		preferences.swapCrossMoonKey -> preferences.swapCrossMoon
+		preferences.rumbleEnabledKey -> preferences.rumbleEnabled
 		else -> defValue
 	}
 
@@ -35,6 +36,7 @@ class DataStore(val preferences: Preferences): PreferenceDataStore()
 		{
 			preferences.logVerboseKey -> preferences.logVerbose = value
 			preferences.swapCrossMoonKey -> preferences.swapCrossMoon = value
+			preferences.rumbleEnabledKey -> preferences.rumbleEnabled = value
 		}
 	}
 

android/app/src/main/java/com/metallic/chiaki/stream/StreamActivity.kt

@@ -9,6 +9,8 @@ import android.content.res.Configuration
 import android.graphics.Matrix
 import android.os.Bundle
 import android.os.Handler
+import android.os.VibrationEffect
+import android.os.Vibrator
 import android.view.KeyEvent
 import android.view.MotionEvent
 import android.view.TextureView
@@ -30,6 +32,7 @@ import com.metallic.chiaki.session.*
 import com.metallic.chiaki.touchcontrols.TouchpadOnlyFragment
 import com.metallic.chiaki.touchcontrols.TouchControlsFragment
 import kotlinx.android.synthetic.main.activity_stream.*
+import kotlin.math.min
 
 private sealed class DialogContents
 private object StreamQuitDialog: DialogContents()
@@ -105,6 +108,19 @@ class StreamActivity : AppCompatActivity(), View.OnSystemUiVisibilityChangeListe
 		textureView.addOnLayoutChangeListener { _, _, _, _, _, _, _, _, _ ->
 			adjustTextureViewAspect()
 		}
+
+		if(Preferences(this).rumbleEnabled)
+		{
+			val vibrator = getSystemService(VIBRATOR_SERVICE) as Vibrator
+			viewModel.session.rumbleState.observe(this, Observer {
+				val amplitude = min(255, (it.left.toInt() + it.right.toInt()) / 2)
+				vibrator.cancel()
+				if(amplitude == 0)
+					return@Observer
+				if(android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O)
+					vibrator.vibrate(VibrationEffect.createOneShot(1000, amplitude))
+			})
+		}
 	}
 
 	override fun onAttachFragment(fragment: Fragment)

android/app/src/main/res/drawable/ic_rumble.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:fillColor="?android:attr/textColorPrimary"
+      android:pathData="M0,15h2L2,9L0,9v6zM3,17h2L5,7L3,7v10zM22,9v6h2L24,9h-2zM19,17h2L21,7h-2v10zM16.5,3h-9C6.67,3 6,3.67 6,4.5v15c0,0.83 0.67,1.5 1.5,1.5h9c0.83,0 1.5,-0.67 1.5,-1.5v-15c0,-0.83 -0.67,-1.5 -1.5,-1.5zM16,19L8,19L8,5h8v14z"/>
+</vector>

android/app/src/main/res/values/strings.xml

@@ -88,6 +88,8 @@
     <string name="preferences_codec_title_h265">H265 (PS5 only)</string>
     <string name="preferences_swap_cross_moon_title">Swap Cross/Moon and Box/Pyramid Buttons</string>
     <string name="preferences_swap_cross_moon_summary">Swap face buttons if default mapping is incorrect (e.g. for 8BitDo controllers)</string>
+    <string name="preferences_rumble_enabled_title">Rumble</string>
+    <string name="preferences_rumble_enabled_summary">Use phone vibration motor for rumble</string>
     <string name="alert_message_delete_registered_host">Are you sure you want to delete the registered console %s with ID %s?</string>
     <string name="alert_message_delete_manual_host">Are you sure you want to delete the console entry for %s?</string>
     <string name="action_keep">Keep</string>
@@ -101,7 +103,8 @@
     <!-- Don't localize these -->
     <string name="preferences_discovery_enabled_key">discovery_enabled</string>
     <string name="preferences_on_screen_controls_enabled_key">on_screen_controls_enabled</string>
-    <string name="preferences_touchpad_only_key">touchpad_only_enabled</string>
+    <string name="preferences_touchpad_only_enabled_key">touchpad_only_enabled</string>
+    <string name="preferences_rumble_enabled_key">rumble_enabled</string>
     <string name="preferences_log_verbose_key">log_verbose</string>
     <string name="preferences_import_settings_key">import_settings</string>
     <string name="preferences_export_settings_key">export_settings</string>

android/app/src/main/res/xml/preferences.xml

@@ -19,6 +19,12 @@
             app:summary="@string/preferences_swap_cross_moon_summary"
             app:icon="@drawable/ic_gamepad" />
 
+        <SwitchPreference
+            app:key="@string/preferences_rumble_enabled_key"
+            app:title="@string/preferences_rumble_enabled_title"
+            app:summary="@string/preferences_rumble_enabled_summary"
+            app:icon="@drawable/ic_rumble" />
+
         <SwitchPreference
             app:key="@string/preferences_log_verbose_key"
             app:title="@string/preferences_log_verbose_title"