Android: Add input device selection

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,