Android: Add input device selection

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/ControllerInterface.java

@@ -95,6 +95,8 @@ public final class ControllerInterface
    */
   public static native void refreshDevices();
 
+  public static native String[] getAllDeviceStrings();
+
   @Keep
   private static void registerInputDeviceListener()
   {

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/MappingCommon.java

@@ -2,6 +2,10 @@
 
 package org.dolphinemu.dolphinemu.features.input.model;
 
+import androidx.annotation.NonNull;
+
+import org.dolphinemu.dolphinemu.features.input.model.controlleremu.EmulatedController;
+
 public final class MappingCommon
 {
   private MappingCommon()
@@ -15,10 +19,13 @@ public final class MappingCommon
    * When this is being called, a separate thread must be calling ControllerInterface's
    * dispatchKeyEvent and dispatchGenericMotionEvent, otherwise no inputs will be registered.
    *
+   * @param controller The device to detect inputs from.
+   * @param allDevices Whether to also detect inputs from devices other than the specified one.
    * @return The input(s) pressed by the user in the form of an InputCommon expression,
    * or an empty string if there were no inputs.
    */
-  public static native String detectInput();
+  public static native String detectInput(@NonNull EmulatedController controller,
+          boolean allDevices);
 
   public static native void save();
 }

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/controlleremu/EmulatedController.java

@@ -21,6 +21,10 @@ public class EmulatedController
     mPointer = pointer;
   }
 
+  public native String getDefaultDevice();
+
+  public native void setDefaultDevice(String device);
+
   public native int getGroupCount();
 
   public native ControlGroup getGroup(int index);

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/view/InputDeviceSetting.java

@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.dolphinemu.dolphinemu.features.input.model.view;
+
+import android.content.Context;
+
+import org.dolphinemu.dolphinemu.features.input.model.ControllerInterface;
+import org.dolphinemu.dolphinemu.features.input.model.controlleremu.EmulatedController;
+import org.dolphinemu.dolphinemu.features.settings.model.Settings;
+import org.dolphinemu.dolphinemu.features.settings.model.view.StringSingleChoiceSetting;
+
+public class InputDeviceSetting extends StringSingleChoiceSetting
+{
+  private final EmulatedController mController;
+
+  public InputDeviceSetting(Context context, int titleId, int descriptionId,
+          EmulatedController controller)
+  {
+    super(context, null, titleId, descriptionId, null, null, null);
+
+    mController = controller;
+
+    refreshChoicesAndValues();
+  }
+
+  @Override
+  public String getSelectedChoice(Settings settings)
+  {
+    return mController.getDefaultDevice();
+  }
+
+  @Override
+  public String getSelectedValue(Settings settings)
+  {
+    return mController.getDefaultDevice();
+  }
+
+  @Override
+  public void setSelectedValue(Settings settings, String newValue)
+  {
+    mController.setDefaultDevice(newValue);
+  }
+
+  @Override
+  public void refreshChoicesAndValues()
+  {
+    String[] devices = ControllerInterface.getAllDeviceStrings();
+
+    mChoices = devices;
+    mValues = devices;
+  }
+
+  @Override
+  public boolean canClear()
+  {
+    return true;
+  }
+
+  @Override
+  public void clear(Settings settings)
+  {
+    setSelectedValue(settings, "");
+  }
+}

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/model/view/InputMappingControlSetting.java

@@ -47,4 +47,9 @@ public final class InputMappingControlSetting extends SettingsItem
   {
     return null;
   }
+
+  public EmulatedController getController()
+  {
+    return mController;
+  }
 }

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/input/ui/MotionAlertDialog.java

@@ -46,7 +46,7 @@ public final class MotionAlertDialog extends AlertDialog
     mRunning = true;
     new Thread(() ->
     {
-      String result = MappingCommon.detectInput();
+      String result = MappingCommon.detectInput(mSetting.getController(), false);
       mActivity.runOnUiThread(() ->
       {
         if (mRunning)

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/view/SettingsItem.java

@@ -95,6 +95,11 @@ public abstract class SettingsItem
     return getSetting() != null;
   }
 
+  public boolean canClear()
+  {
+    return hasSetting();
+  }
+
   public void clear(Settings settings)
   {
     getSetting().delete(settings);

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/model/view/StringSingleChoiceSetting.java

@@ -14,8 +14,8 @@ public class StringSingleChoiceSetting extends SettingsItem
 {
   private AbstractStringSetting mSetting;
 
-  private String[] mChoices;
-  private String[] mValues;
+  protected String[] mChoices;
+  protected String[] mValues;
   private MenuTag mMenuTag;
 
   public StringSingleChoiceSetting(Context context, AbstractStringSetting setting, int titleId,
@@ -60,6 +60,19 @@ public class StringSingleChoiceSetting extends SettingsItem
     return mValues;
   }
 
+  public String getChoiceAt(int index)
+  {
+    if (mChoices == null)
+      return null;
+
+    if (index >= 0 && index < mChoices.length)
+    {
+      return mChoices[index];
+    }
+
+    return "";
+  }
+
   public String getValueAt(int index)
   {
     if (mValues == null)
@@ -73,6 +86,11 @@ public class StringSingleChoiceSetting extends SettingsItem
     return "";
   }
 
+  public String getSelectedChoice(Settings settings)
+  {
+    return getChoiceAt(getSelectedValueIndex(settings));
+  }
+
   public String getSelectedValue(Settings settings)
   {
     return mSetting.getString(settings);
@@ -102,6 +120,10 @@ public class StringSingleChoiceSetting extends SettingsItem
     mSetting.setString(settings, selection);
   }
 
+  public void refreshChoicesAndValues()
+  {
+  }
+
   @Override
   public int getType()
   {

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsAdapter.java

@@ -253,6 +253,8 @@ public final class SettingsAdapter extends RecyclerView.Adapter<SettingViewHolde
     mClickedItem = item;
     mClickedPosition = position;
 
+    item.refreshChoicesAndValues();
+
     mDialog = new MaterialAlertDialogBuilder(mView.getActivity())
             .setTitle(item.getName())
             .setSingleChoiceItems(item.getChoices(), item.getSelectedValueIndex(getSettings()),

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/SettingsFragmentPresenter.java

@@ -22,6 +22,7 @@ import org.dolphinemu.dolphinemu.features.input.model.controlleremu.ControlGroup
 import org.dolphinemu.dolphinemu.features.input.model.ControlGroupEnabledSetting;
 import org.dolphinemu.dolphinemu.features.input.model.controlleremu.EmulatedController;
 import org.dolphinemu.dolphinemu.features.input.model.controlleremu.NumericSetting;
+import org.dolphinemu.dolphinemu.features.input.model.view.InputDeviceSetting;
 import org.dolphinemu.dolphinemu.features.input.model.view.InputMappingControlSetting;
 import org.dolphinemu.dolphinemu.features.settings.model.AbstractBooleanSetting;
 import org.dolphinemu.dolphinemu.features.settings.model.AbstractIntSetting;
@@ -1107,7 +1108,10 @@ public final class SettingsFragmentPresenter
   {
     if (gcPadType == 6) // Emulated
     {
-      addControllerSettings(sl, EmulatedController.getGcPad(gcPadNumber), null);
+      EmulatedController gcPad = EmulatedController.getGcPad(gcPadNumber);
+
+      addControllerMetaSettings(sl, gcPad);
+      addControllerMappingSettings(sl, gcPad, null);
     }
     else if (gcPadType == 12) // Adapter
     {
@@ -1120,6 +1124,10 @@ public final class SettingsFragmentPresenter
 
   private void addWiimoteSubSettings(ArrayList<SettingsItem> sl, int wiimoteNumber)
   {
+    EmulatedController wiimote = EmulatedController.getWiimote(wiimoteNumber);
+
+    addControllerMetaSettings(sl, wiimote);
+
     sl.add(new HeaderSetting(mContext, R.string.wiimote, 0));
     sl.add(new SubmenuSetting(mContext, R.string.wiimote_general,
             MenuTag.getWiimoteGeneralMenuTag(wiimoteNumber)));
@@ -1130,44 +1138,58 @@ public final class SettingsFragmentPresenter
 
     // TYPE_OTHER is included here instead of in addWiimoteGeneralSubSettings so that touchscreen
     // users won't have to dig into a submenu to find the Sideways Wii Remote setting
-    addControllerSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
+    addControllerMappingSettings(sl, wiimote,
             new ArraySet<>(Arrays.asList(ControlGroup.TYPE_ATTACHMENTS, ControlGroup.TYPE_OTHER)));
   }
 
   private void addExtensionTypeSettings(ArrayList<SettingsItem> sl, int wiimoteNumber,
           int extensionType)
   {
-    addControllerSettings(sl,
+    addControllerMappingSettings(sl,
             EmulatedController.getWiimoteAttachment(wiimoteNumber, extensionType), null);
   }
 
   private void addWiimoteGeneralSubSettings(ArrayList<SettingsItem> sl, int wiimoteNumber)
   {
-    addControllerSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
+    addControllerMappingSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
             Collections.singleton(ControlGroup.TYPE_BUTTONS));
   }
 
   private void addWiimoteMotionSimulationSubSettings(ArrayList<SettingsItem> sl, int wiimoteNumber)
   {
-    addControllerSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
+    addControllerMappingSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
             new ArraySet<>(Arrays.asList(ControlGroup.TYPE_FORCE, ControlGroup.TYPE_TILT,
                     ControlGroup.TYPE_CURSOR, ControlGroup.TYPE_SHAKE)));
   }
 
   private void addWiimoteMotionInputSubSettings(ArrayList<SettingsItem> sl, int wiimoteNumber)
   {
-    addControllerSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
+    addControllerMappingSettings(sl, EmulatedController.getWiimote(wiimoteNumber),
             new ArraySet<>(Arrays.asList(ControlGroup.TYPE_IMU_ACCELEROMETER,
                     ControlGroup.TYPE_IMU_GYROSCOPE, ControlGroup.TYPE_IMU_CURSOR)));
   }
 
   /**
+   * Adds settings and actions that apply to a controller as a whole.
+   * For instance, the device setting and the Clear action.
+   *
+   * @param sl         The list to place controller settings into.
+   * @param controller The controller to add settings for.
+   */
+  private void addControllerMetaSettings(ArrayList<SettingsItem> sl, EmulatedController controller)
+  {
+    sl.add(new InputDeviceSetting(mContext, R.string.input_device, 0, controller));
+  }
+
+  /**
+   * Adds mapping settings and other control-specific settings.
+   *
    * @param sl              The list to place controller settings into.
    * @param controller      The controller to add settings for.
    * @param groupTypeFilter If this is non-null, only groups whose types match this are considered.
    */
-  private void addControllerSettings(ArrayList<SettingsItem> sl, EmulatedController controller,
-          Set<Integer> groupTypeFilter)
+  private void addControllerMappingSettings(ArrayList<SettingsItem> sl,
+          EmulatedController controller, Set<Integer> groupTypeFilter)
   {
     int groupCount = controller.getGroupCount();
     for (int i = 0; i < groupCount; i++)

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/viewholder/SettingViewHolder.java

@@ -83,7 +83,7 @@ public abstract class SettingViewHolder extends RecyclerView.ViewHolder
   {
     SettingsItem item = getItem();
 
-    if (item == null || !item.hasSetting())
+    if (item == null || !item.canClear())
       return false;
 
     if (!item.isEditable())

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/features/settings/ui/viewholder/SingleChoiceViewHolder.java

@@ -64,10 +64,8 @@ public final class SingleChoiceViewHolder extends SettingViewHolder
     else if (item instanceof StringSingleChoiceSetting)
     {
       StringSingleChoiceSetting setting = (StringSingleChoiceSetting) item;
-      String[] choices = setting.getChoices();
-      int valueIndex = setting.getSelectedValueIndex(settings);
-      if (valueIndex != -1)
-        mBinding.textSettingDescription.setText(choices[valueIndex]);
+      String choice = setting.getSelectedChoice(settings);
+      mBinding.textSettingDescription.setText(choice);
     }
     else if (item instanceof SingleChoiceSettingDynamicDescriptions)
     {

Source/Android/app/src/main/res/values/strings.xml

@@ -27,6 +27,8 @@
     <string name="wiimote_motion_input">Motion Input</string>
     <string name="wiimote_extensions">Extension</string>
 
+    <string name="input_device">Device</string>
+
     <string name="input_binding">Input Binding</string>
     <string name="input_binding_description">Press or move an input to bind it to %1$s.</string>
 

Source/Android/jni/CMakeLists.txt

@@ -17,6 +17,7 @@ add_library(main SHARED
   Input/ControlReference.cpp
   Input/ControlReference.h
   Input/EmulatedController.cpp
+  Input/EmulatedController.h
   Input/InputOverrider.cpp
   Input/MappingCommon.cpp
   Input/NumericSetting.cpp

Source/Android/jni/Input/EmulatedController.cpp

@@ -16,7 +16,7 @@
 #include "jni/Input/ControlGroup.h"
 #include "jni/Input/ControlReference.h"
 
-static ControllerEmu::EmulatedController* GetPointer(JNIEnv* env, jobject obj)
+ControllerEmu::EmulatedController* EmulatedControllerFromJava(JNIEnv* env, jobject obj)
 {
   return reinterpret_cast<ControllerEmu::EmulatedController*>(
       env->GetLongField(obj, IDCache::GetEmulatedControllerPointer()));
@@ -34,25 +34,40 @@ static jobject EmulatedControllerToJava(JNIEnv* env, ControllerEmu::EmulatedCont
 
 extern "C" {
 
+JNIEXPORT jstring JNICALL
+Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_getDefaultDevice(
+    JNIEnv* env, jobject obj)
+{
+  return ToJString(env, EmulatedControllerFromJava(env, obj)->GetDefaultDevice().ToString());
+}
+
+JNIEXPORT void JNICALL
+Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_setDefaultDevice(
+    JNIEnv* env, jobject obj, jstring j_device)
+{
+  return EmulatedControllerFromJava(env, obj)->SetDefaultDevice(GetJString(env, j_device));
+}
+
 JNIEXPORT jint JNICALL
 Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_getGroupCount(
     JNIEnv* env, jobject obj)
 {
-  return static_cast<jint>(GetPointer(env, obj)->groups.size());
+  return static_cast<jint>(EmulatedControllerFromJava(env, obj)->groups.size());
 }
 
 JNIEXPORT jobject JNICALL
 Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_getGroup(
     JNIEnv* env, jobject obj, jint controller_index)
 {
-  return ControlGroupToJava(env, GetPointer(env, obj)->groups[controller_index].get());
+  return ControlGroupToJava(env,
+                            EmulatedControllerFromJava(env, obj)->groups[controller_index].get());
 }
 
 JNIEXPORT void JNICALL
 Java_org_dolphinemu_dolphinemu_features_input_model_controlleremu_EmulatedController_updateSingleControlReference(
     JNIEnv* env, jobject obj, jobject control_reference)
 {
-  return GetPointer(env, obj)->UpdateSingleControlReference(
+  return EmulatedControllerFromJava(env, obj)->UpdateSingleControlReference(
       g_controller_interface, ControlReferenceFromJava(env, control_reference));
 }
 

Source/Android/jni/Input/EmulatedController.h

@@ -0,0 +1,13 @@
+// Copyright 2022 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <jni.h>
+
+namespace ControllerEmu
+{
+class ControlReference;
+}
+
+ControllerEmu::EmulatedController* EmulatedControllerFromJava(JNIEnv* env, jobject obj);

Source/Android/jni/Input/MappingCommon.cpp

@@ -17,6 +17,7 @@
 #include "InputCommon/ControllerInterface/ControllerInterface.h"
 #include "InputCommon/ControllerInterface/MappingCommon.h"
 #include "jni/AndroidCommon/AndroidCommon.h"
+#include "jni/Input/EmulatedController.h"
 
 namespace
 {
@@ -28,10 +29,19 @@ constexpr auto INPUT_DETECT_MAXIMUM_TIME = std::chrono::seconds(5);
 extern "C" {
 
 JNIEXPORT jstring JNICALL
-Java_org_dolphinemu_dolphinemu_features_input_model_MappingCommon_detectInput(JNIEnv* env, jclass)
+Java_org_dolphinemu_dolphinemu_features_input_model_MappingCommon_detectInput(
+    JNIEnv* env, jclass, jobject j_emulated_controller, jboolean all_devices)
 {
-  const std::vector<std::string> device_strings = g_controller_interface.GetAllDeviceStrings();
-  const ciface::Core::DeviceQualifier default_device{};
+  ControllerEmu::EmulatedController* emulated_controller =
+      EmulatedControllerFromJava(env, j_emulated_controller);
+
+  const ciface::Core::DeviceQualifier default_device = emulated_controller->GetDefaultDevice();
+
+  std::vector<std::string> device_strings;
+  if (all_devices)
+    device_strings = g_controller_interface.GetAllDeviceStrings();
+  else
+    device_strings = {default_device.ToString()};
 
   auto detections =
       g_controller_interface.DetectInput(device_strings, INPUT_DETECT_INITIAL_TIME,

Source/Core/InputCommon/ControllerInterface/Android/Android.cpp

@@ -1122,4 +1122,11 @@ Java_org_dolphinemu_dolphinemu_features_input_model_ControllerInterface_refreshD
 {
   g_controller_interface.RefreshDevices();
 }
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_dolphinemu_dolphinemu_features_input_model_ControllerInterface_getAllDeviceStrings(
+    JNIEnv* env, jclass)
+{
+  return VectorToJStringArray(env, g_controller_interface.GetAllDeviceStrings());
+}
 }