android: Move JNI setup and helpers to common

7 files changed, 969 insertions, 1 deletions

diff --git a/src/common/CMakeLists.txt b/src/common/CMakeLists.txt
index 85926fc8f..8ff1326f2 100644
--- a/src/common/CMakeLists.txt
+++ b/src/common/CMakeLists.txt
@@ -179,9 +179,15 @@ endif()
 
 if(ANDROID)
     target_sources(common
-        PRIVATE
+        PUBLIC
             fs/fs_android.cpp
             fs/fs_android.h
+            android/android_common.cpp
+            android/android_common.h
+            android/id_cache.cpp
+            android/id_cache.h
+            android/applets/software_keyboard.cpp
+            android/applets/software_keyboard.h
     )
 endif()
 
diff --git a/src/common/android/android_common.cpp b/src/common/android/android_common.cpp
new file mode 100644
index 000000000..e79005658
--- /dev/null
+++ b/src/common/android/android_common.cpp
@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "android_common.h"
+
+#include <string>
+#include <string_view>
+
+#include <jni.h>
+
+#include "common/android/id_cache.h"
+#include "common/string_util.h"
+
+namespace Common::Android {
+
+std::string GetJString(JNIEnv* env, jstring jstr) {
+    if (!jstr) {
+        return {};
+    }
+
+    const jchar* jchars = env->GetStringChars(jstr, nullptr);
+    const jsize length = env->GetStringLength(jstr);
+    const std::u16string_view string_view(reinterpret_cast<const char16_t*>(jchars),
+                                          static_cast<u32>(length));
+    const std::string converted_string = Common::UTF16ToUTF8(string_view);
+    env->ReleaseStringChars(jstr, jchars);
+
+    return converted_string;
+}
+
+jstring ToJString(JNIEnv* env, std::string_view str) {
+    const std::u16string converted_string = Common::UTF8ToUTF16(str);
+    return env->NewString(reinterpret_cast<const jchar*>(converted_string.data()),
+                          static_cast<jint>(converted_string.size()));
+}
+
+jstring ToJString(JNIEnv* env, std::u16string_view str) {
+    return ToJString(env, Common::UTF16ToUTF8(str));
+}
+
+double GetJDouble(JNIEnv* env, jobject jdouble) {
+    return env->GetDoubleField(jdouble, GetDoubleValueField());
+}
+
+jobject ToJDouble(JNIEnv* env, double value) {
+    return env->NewObject(GetDoubleClass(), GetDoubleConstructor(), value);
+}
+
+s32 GetJInteger(JNIEnv* env, jobject jinteger) {
+    return env->GetIntField(jinteger, GetIntegerValueField());
+}
+
+jobject ToJInteger(JNIEnv* env, s32 value) {
+    return env->NewObject(GetIntegerClass(), GetIntegerConstructor(), value);
+}
+
+bool GetJBoolean(JNIEnv* env, jobject jboolean) {
+    return env->GetBooleanField(jboolean, GetBooleanValueField());
+}
+
+jobject ToJBoolean(JNIEnv* env, bool value) {
+    return env->NewObject(GetBooleanClass(), GetBooleanConstructor(), value);
+}
+
+} // namespace Common::Android
diff --git a/src/common/android/android_common.h b/src/common/android/android_common.h
new file mode 100644
index 000000000..d0ccb4ec2
--- /dev/null
+++ b/src/common/android/android_common.h
@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+#include <jni.h>
+#include "common/common_types.h"
+
+namespace Common::Android {
+
+std::string GetJString(JNIEnv* env, jstring jstr);
+jstring ToJString(JNIEnv* env, std::string_view str);
+jstring ToJString(JNIEnv* env, std::u16string_view str);
+
+double GetJDouble(JNIEnv* env, jobject jdouble);
+jobject ToJDouble(JNIEnv* env, double value);
+
+s32 GetJInteger(JNIEnv* env, jobject jinteger);
+jobject ToJInteger(JNIEnv* env, s32 value);
+
+bool GetJBoolean(JNIEnv* env, jobject jboolean);
+jobject ToJBoolean(JNIEnv* env, bool value);
+
+} // namespace Common::Android
diff --git a/src/common/android/applets/software_keyboard.cpp b/src/common/android/applets/software_keyboard.cpp
new file mode 100644
index 000000000..477e62b16
--- /dev/null
+++ b/src/common/android/applets/software_keyboard.cpp
@@ -0,0 +1,277 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <map>
+#include <thread>
+
+#include <jni.h>
+
+#include "common/android/android_common.h"
+#include "common/android/applets/software_keyboard.h"
+#include "common/android/id_cache.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+
+static jclass s_software_keyboard_class;
+static jclass s_keyboard_config_class;
+static jclass s_keyboard_data_class;
+static jmethodID s_swkbd_execute_normal;
+static jmethodID s_swkbd_execute_inline;
+
+namespace Common::Android::SoftwareKeyboard {
+
+static jobject ToJKeyboardParams(const Core::Frontend::KeyboardInitializeParameters& config) {
+    JNIEnv* env = GetEnvForThread();
+    jobject object = env->AllocObject(s_keyboard_config_class);
+
+    env->SetObjectField(object,
+                        env->GetFieldID(s_keyboard_config_class, "ok_text", "Ljava/lang/String;"),
+                        ToJString(env, config.ok_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "header_text", "Ljava/lang/String;"),
+        ToJString(env, config.header_text));
+    env->SetObjectField(object,
+                        env->GetFieldID(s_keyboard_config_class, "sub_text", "Ljava/lang/String;"),
+                        ToJString(env, config.sub_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "guide_text", "Ljava/lang/String;"),
+        ToJString(env, config.guide_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "initial_text", "Ljava/lang/String;"),
+        ToJString(env, config.initial_text));
+    env->SetShortField(object,
+                       env->GetFieldID(s_keyboard_config_class, "left_optional_symbol_key", "S"),
+                       static_cast<jshort>(config.left_optional_symbol_key));
+    env->SetShortField(object,
+                       env->GetFieldID(s_keyboard_config_class, "right_optional_symbol_key", "S"),
+                       static_cast<jshort>(config.right_optional_symbol_key));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "max_text_length", "I"),
+                     static_cast<jint>(config.max_text_length));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "min_text_length", "I"),
+                     static_cast<jint>(config.min_text_length));
+    env->SetIntField(object,
+                     env->GetFieldID(s_keyboard_config_class, "initial_cursor_position", "I"),
+                     static_cast<jint>(config.initial_cursor_position));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "type", "I"),
+                     static_cast<jint>(config.type));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "password_mode", "I"),
+                     static_cast<jint>(config.password_mode));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "text_draw_type", "I"),
+                     static_cast<jint>(config.text_draw_type));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "key_disable_flags", "I"),
+                     static_cast<jint>(config.key_disable_flags.raw));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "use_blur_background", "Z"),
+                         static_cast<jboolean>(config.use_blur_background));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "enable_backspace_button", "Z"),
+                         static_cast<jboolean>(config.enable_backspace_button));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "enable_return_button", "Z"),
+                         static_cast<jboolean>(config.enable_return_button));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "disable_cancel_button", "Z"),
+                         static_cast<jboolean>(config.disable_cancel_button));
+
+    return object;
+}
+
+AndroidKeyboard::ResultData AndroidKeyboard::ResultData::CreateFromFrontend(jobject object) {
+    JNIEnv* env = GetEnvForThread();
+    const jstring string = reinterpret_cast<jstring>(env->GetObjectField(
+        object, env->GetFieldID(s_keyboard_data_class, "text", "Ljava/lang/String;")));
+    return ResultData{GetJString(env, string),
+                      static_cast<Service::AM::Frontend::SwkbdResult>(env->GetIntField(
+                          object, env->GetFieldID(s_keyboard_data_class, "result", "I")))};
+}
+
+AndroidKeyboard::~AndroidKeyboard() = default;
+
+void AndroidKeyboard::InitializeKeyboard(
+    bool is_inline, Core::Frontend::KeyboardInitializeParameters initialize_parameters,
+    SubmitNormalCallback submit_normal_callback_, SubmitInlineCallback submit_inline_callback_) {
+    if (is_inline) {
+        LOG_WARNING(
+            Frontend,
+            "(STUBBED) called, backend requested to initialize the inline software keyboard.");
+
+        submit_inline_callback = std::move(submit_inline_callback_);
+    } else {
+        LOG_WARNING(
+            Frontend,
+            "(STUBBED) called, backend requested to initialize the normal software keyboard.");
+
+        submit_normal_callback = std::move(submit_normal_callback_);
+    }
+
+    parameters = std::move(initialize_parameters);
+
+    LOG_INFO(Frontend,
+             "\nKeyboardInitializeParameters:"
+             "\nok_text={}"
+             "\nheader_text={}"
+             "\nsub_text={}"
+             "\nguide_text={}"
+             "\ninitial_text={}"
+             "\nmax_text_length={}"
+             "\nmin_text_length={}"
+             "\ninitial_cursor_position={}"
+             "\ntype={}"
+             "\npassword_mode={}"
+             "\ntext_draw_type={}"
+             "\nkey_disable_flags={}"
+             "\nuse_blur_background={}"
+             "\nenable_backspace_button={}"
+             "\nenable_return_button={}"
+             "\ndisable_cancel_button={}",
+             Common::UTF16ToUTF8(parameters.ok_text), Common::UTF16ToUTF8(parameters.header_text),
+             Common::UTF16ToUTF8(parameters.sub_text), Common::UTF16ToUTF8(parameters.guide_text),
+             Common::UTF16ToUTF8(parameters.initial_text), parameters.max_text_length,
+             parameters.min_text_length, parameters.initial_cursor_position, parameters.type,
+             parameters.password_mode, parameters.text_draw_type, parameters.key_disable_flags.raw,
+             parameters.use_blur_background, parameters.enable_backspace_button,
+             parameters.enable_return_button, parameters.disable_cancel_button);
+}
+
+void AndroidKeyboard::ShowNormalKeyboard() const {
+    LOG_DEBUG(Frontend, "called, backend requested to show the normal software keyboard.");
+
+    ResultData data{};
+
+    // Pivot to a new thread, as we cannot call GetEnvForThread() from a Fiber.
+    std::thread([&] {
+        data = ResultData::CreateFromFrontend(GetEnvForThread()->CallStaticObjectMethod(
+            s_software_keyboard_class, s_swkbd_execute_normal, ToJKeyboardParams(parameters)));
+    }).join();
+
+    SubmitNormalText(data);
+}
+
+void AndroidKeyboard::ShowTextCheckDialog(
+    Service::AM::Frontend::SwkbdTextCheckResult text_check_result,
+    std::u16string text_check_message) const {
+    LOG_WARNING(Frontend, "(STUBBED) called, backend requested to show the text check dialog.");
+}
+
+void AndroidKeyboard::ShowInlineKeyboard(
+    Core::Frontend::InlineAppearParameters appear_parameters) const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to show the inline software keyboard.");
+
+    LOG_INFO(Frontend,
+             "\nInlineAppearParameters:"
+             "\nmax_text_length={}"
+             "\nmin_text_length={}"
+             "\nkey_top_scale_x={}"
+             "\nkey_top_scale_y={}"
+             "\nkey_top_translate_x={}"
+             "\nkey_top_translate_y={}"
+             "\ntype={}"
+             "\nkey_disable_flags={}"
+             "\nkey_top_as_floating={}"
+             "\nenable_backspace_button={}"
+             "\nenable_return_button={}"
+             "\ndisable_cancel_button={}",
+             appear_parameters.max_text_length, appear_parameters.min_text_length,
+             appear_parameters.key_top_scale_x, appear_parameters.key_top_scale_y,
+             appear_parameters.key_top_translate_x, appear_parameters.key_top_translate_y,
+             appear_parameters.type, appear_parameters.key_disable_flags.raw,
+             appear_parameters.key_top_as_floating, appear_parameters.enable_backspace_button,
+             appear_parameters.enable_return_button, appear_parameters.disable_cancel_button);
+
+    // Pivot to a new thread, as we cannot call GetEnvForThread() from a Fiber.
+    m_is_inline_active = true;
+    std::thread([&] {
+        GetEnvForThread()->CallStaticVoidMethod(s_software_keyboard_class, s_swkbd_execute_inline,
+                                                ToJKeyboardParams(parameters));
+    }).join();
+}
+
+void AndroidKeyboard::HideInlineKeyboard() const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to hide the inline software keyboard.");
+}
+
+void AndroidKeyboard::InlineTextChanged(
+    Core::Frontend::InlineTextParameters text_parameters) const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to change the inline keyboard text.");
+
+    LOG_INFO(Frontend,
+             "\nInlineTextParameters:"
+             "\ninput_text={}"
+             "\ncursor_position={}",
+             Common::UTF16ToUTF8(text_parameters.input_text), text_parameters.cursor_position);
+
+    submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString,
+                           text_parameters.input_text, text_parameters.cursor_position);
+}
+
+void AndroidKeyboard::ExitKeyboard() const {
+    LOG_WARNING(Frontend, "(STUBBED) called, backend requested to exit the software keyboard.");
+}
+
+void AndroidKeyboard::SubmitInlineKeyboardText(std::u16string submitted_text) {
+    if (!m_is_inline_active) {
+        return;
+    }
+
+    m_current_text += submitted_text;
+
+    submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString, m_current_text,
+                           static_cast<int>(m_current_text.size()));
+}
+
+void AndroidKeyboard::SubmitInlineKeyboardInput(int key_code) {
+    static constexpr int KEYCODE_BACK = 4;
+    static constexpr int KEYCODE_ENTER = 66;
+    static constexpr int KEYCODE_DEL = 67;
+
+    if (!m_is_inline_active) {
+        return;
+    }
+
+    switch (key_code) {
+    case KEYCODE_BACK:
+    case KEYCODE_ENTER:
+        m_is_inline_active = false;
+        submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::DecidedEnter, m_current_text,
+                               static_cast<s32>(m_current_text.size()));
+        break;
+    case KEYCODE_DEL:
+        m_current_text.pop_back();
+        submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString, m_current_text,
+                               static_cast<int>(m_current_text.size()));
+        break;
+    }
+}
+
+void AndroidKeyboard::SubmitNormalText(const ResultData& data) const {
+    submit_normal_callback(data.result, Common::UTF8ToUTF16(data.text), true);
+}
+
+void InitJNI(JNIEnv* env) {
+    s_software_keyboard_class = reinterpret_cast<jclass>(
+        env->NewGlobalRef(env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard")));
+    s_keyboard_config_class = reinterpret_cast<jclass>(env->NewGlobalRef(
+        env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig")));
+    s_keyboard_data_class = reinterpret_cast<jclass>(env->NewGlobalRef(
+        env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardData")));
+
+    s_swkbd_execute_normal = env->GetStaticMethodID(
+        s_software_keyboard_class, "executeNormal",
+        "(Lorg/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig;)Lorg/yuzu/yuzu_emu/"
+        "applets/keyboard/SoftwareKeyboard$KeyboardData;");
+    s_swkbd_execute_inline = env->GetStaticMethodID(
+        s_software_keyboard_class, "executeInline",
+        "(Lorg/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig;)V");
+}
+
+void CleanupJNI(JNIEnv* env) {
+    env->DeleteGlobalRef(s_software_keyboard_class);
+    env->DeleteGlobalRef(s_keyboard_config_class);
+    env->DeleteGlobalRef(s_keyboard_data_class);
+}
+
+} // namespace Common::Android::SoftwareKeyboard
diff --git a/src/common/android/applets/software_keyboard.h b/src/common/android/applets/software_keyboard.h
new file mode 100644
index 000000000..9fd09d27c
--- /dev/null
+++ b/src/common/android/applets/software_keyboard.h
@@ -0,0 +1,78 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <jni.h>
+
+#include "core/frontend/applets/software_keyboard.h"
+
+namespace Common::Android::SoftwareKeyboard {
+
+class AndroidKeyboard final : public Core::Frontend::SoftwareKeyboardApplet {
+public:
+    ~AndroidKeyboard() override;
+
+    void Close() const override {
+        ExitKeyboard();
+    }
+
+    void InitializeKeyboard(bool is_inline,
+                            Core::Frontend::KeyboardInitializeParameters initialize_parameters,
+                            SubmitNormalCallback submit_normal_callback_,
+                            SubmitInlineCallback submit_inline_callback_) override;
+
+    void ShowNormalKeyboard() const override;
+
+    void ShowTextCheckDialog(Service::AM::Frontend::SwkbdTextCheckResult text_check_result,
+                             std::u16string text_check_message) const override;
+
+    void ShowInlineKeyboard(
+        Core::Frontend::InlineAppearParameters appear_parameters) const override;
+
+    void HideInlineKeyboard() const override;
+
+    void InlineTextChanged(Core::Frontend::InlineTextParameters text_parameters) const override;
+
+    void ExitKeyboard() const override;
+
+    void SubmitInlineKeyboardText(std::u16string submitted_text);
+
+    void SubmitInlineKeyboardInput(int key_code);
+
+private:
+    struct ResultData {
+        static ResultData CreateFromFrontend(jobject object);
+
+        std::string text;
+        Service::AM::Frontend::SwkbdResult result{};
+    };
+
+    void SubmitNormalText(const ResultData& result) const;
+
+    Core::Frontend::KeyboardInitializeParameters parameters{};
+
+    mutable SubmitNormalCallback submit_normal_callback;
+    mutable SubmitInlineCallback submit_inline_callback;
+
+private:
+    mutable bool m_is_inline_active{};
+    std::u16string m_current_text;
+};
+
+// Should be called in JNI_Load
+void InitJNI(JNIEnv* env);
+
+// Should be called in JNI_Unload
+void CleanupJNI(JNIEnv* env);
+
+} // namespace Common::Android::SoftwareKeyboard
+
+// Native function calls
+extern "C" {
+JNIEXPORT jobject JNICALL Java_org_citra_citra_1emu_applets_SoftwareKeyboard_ValidateFilters(
+    JNIEnv* env, jclass clazz, jstring text);
+
+JNIEXPORT jobject JNICALL Java_org_citra_citra_1emu_applets_SoftwareKeyboard_ValidateInput(
+    JNIEnv* env, jclass clazz, jstring text);
+}
diff --git a/src/common/android/id_cache.cpp b/src/common/android/id_cache.cpp
new file mode 100644
index 000000000..f39262db9
--- /dev/null
+++ b/src/common/android/id_cache.cpp
@@ -0,0 +1,428 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <jni.h>
+
+#include "applets/software_keyboard.h"
+#include "common/android/id_cache.h"
+#include "common/assert.h"
+#include "common/fs/fs_android.h"
+#include "video_core/rasterizer_interface.h"
+
+static JavaVM* s_java_vm;
+static jclass s_native_library_class;
+static jclass s_disk_cache_progress_class;
+static jclass s_load_callback_stage_class;
+static jclass s_game_dir_class;
+static jmethodID s_game_dir_constructor;
+static jmethodID s_exit_emulation_activity;
+static jmethodID s_disk_cache_load_progress;
+static jmethodID s_on_emulation_started;
+static jmethodID s_on_emulation_stopped;
+static jmethodID s_on_program_changed;
+
+static jclass s_game_class;
+static jmethodID s_game_constructor;
+static jfieldID s_game_title_field;
+static jfieldID s_game_path_field;
+static jfieldID s_game_program_id_field;
+static jfieldID s_game_developer_field;
+static jfieldID s_game_version_field;
+static jfieldID s_game_is_homebrew_field;
+
+static jclass s_string_class;
+static jclass s_pair_class;
+static jmethodID s_pair_constructor;
+static jfieldID s_pair_first_field;
+static jfieldID s_pair_second_field;
+
+static jclass s_overlay_control_data_class;
+static jmethodID s_overlay_control_data_constructor;
+static jfieldID s_overlay_control_data_id_field;
+static jfieldID s_overlay_control_data_enabled_field;
+static jfieldID s_overlay_control_data_landscape_position_field;
+static jfieldID s_overlay_control_data_portrait_position_field;
+static jfieldID s_overlay_control_data_foldable_position_field;
+
+static jclass s_patch_class;
+static jmethodID s_patch_constructor;
+static jfieldID s_patch_enabled_field;
+static jfieldID s_patch_name_field;
+static jfieldID s_patch_version_field;
+static jfieldID s_patch_type_field;
+static jfieldID s_patch_program_id_field;
+static jfieldID s_patch_title_id_field;
+
+static jclass s_double_class;
+static jmethodID s_double_constructor;
+static jfieldID s_double_value_field;
+
+static jclass s_integer_class;
+static jmethodID s_integer_constructor;
+static jfieldID s_integer_value_field;
+
+static jclass s_boolean_class;
+static jmethodID s_boolean_constructor;
+static jfieldID s_boolean_value_field;
+
+static constexpr jint JNI_VERSION = JNI_VERSION_1_6;
+
+namespace Common::Android {
+
+JNIEnv* GetEnvForThread() {
+    thread_local static struct OwnedEnv {
+        OwnedEnv() {
+            status = s_java_vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6);
+            if (status == JNI_EDETACHED)
+                s_java_vm->AttachCurrentThread(&env, nullptr);
+        }
+
+        ~OwnedEnv() {
+            if (status == JNI_EDETACHED)
+                s_java_vm->DetachCurrentThread();
+        }
+
+        int status;
+        JNIEnv* env = nullptr;
+    } owned;
+    return owned.env;
+}
+
+jclass GetNativeLibraryClass() {
+    return s_native_library_class;
+}
+
+jclass GetDiskCacheProgressClass() {
+    return s_disk_cache_progress_class;
+}
+
+jclass GetDiskCacheLoadCallbackStageClass() {
+    return s_load_callback_stage_class;
+}
+
+jclass GetGameDirClass() {
+    return s_game_dir_class;
+}
+
+jmethodID GetGameDirConstructor() {
+    return s_game_dir_constructor;
+}
+
+jmethodID GetExitEmulationActivity() {
+    return s_exit_emulation_activity;
+}
+
+jmethodID GetDiskCacheLoadProgress() {
+    return s_disk_cache_load_progress;
+}
+
+jmethodID GetOnEmulationStarted() {
+    return s_on_emulation_started;
+}
+
+jmethodID GetOnEmulationStopped() {
+    return s_on_emulation_stopped;
+}
+
+jmethodID GetOnProgramChanged() {
+    return s_on_program_changed;
+}
+
+jclass GetGameClass() {
+    return s_game_class;
+}
+
+jmethodID GetGameConstructor() {
+    return s_game_constructor;
+}
+
+jfieldID GetGameTitleField() {
+    return s_game_title_field;
+}
+
+jfieldID GetGamePathField() {
+    return s_game_path_field;
+}
+
+jfieldID GetGameProgramIdField() {
+    return s_game_program_id_field;
+}
+
+jfieldID GetGameDeveloperField() {
+    return s_game_developer_field;
+}
+
+jfieldID GetGameVersionField() {
+    return s_game_version_field;
+}
+
+jfieldID GetGameIsHomebrewField() {
+    return s_game_is_homebrew_field;
+}
+
+jclass GetStringClass() {
+    return s_string_class;
+}
+
+jclass GetPairClass() {
+    return s_pair_class;
+}
+
+jmethodID GetPairConstructor() {
+    return s_pair_constructor;
+}
+
+jfieldID GetPairFirstField() {
+    return s_pair_first_field;
+}
+
+jfieldID GetPairSecondField() {
+    return s_pair_second_field;
+}
+
+jclass GetOverlayControlDataClass() {
+    return s_overlay_control_data_class;
+}
+
+jmethodID GetOverlayControlDataConstructor() {
+    return s_overlay_control_data_constructor;
+}
+
+jfieldID GetOverlayControlDataIdField() {
+    return s_overlay_control_data_id_field;
+}
+
+jfieldID GetOverlayControlDataEnabledField() {
+    return s_overlay_control_data_enabled_field;
+}
+
+jfieldID GetOverlayControlDataLandscapePositionField() {
+    return s_overlay_control_data_landscape_position_field;
+}
+
+jfieldID GetOverlayControlDataPortraitPositionField() {
+    return s_overlay_control_data_portrait_position_field;
+}
+
+jfieldID GetOverlayControlDataFoldablePositionField() {
+    return s_overlay_control_data_foldable_position_field;
+}
+
+jclass GetPatchClass() {
+    return s_patch_class;
+}
+
+jmethodID GetPatchConstructor() {
+    return s_patch_constructor;
+}
+
+jfieldID GetPatchEnabledField() {
+    return s_patch_enabled_field;
+}
+
+jfieldID GetPatchNameField() {
+    return s_patch_name_field;
+}
+
+jfieldID GetPatchVersionField() {
+    return s_patch_version_field;
+}
+
+jfieldID GetPatchTypeField() {
+    return s_patch_type_field;
+}
+
+jfieldID GetPatchProgramIdField() {
+    return s_patch_program_id_field;
+}
+
+jfieldID GetPatchTitleIdField() {
+    return s_patch_title_id_field;
+}
+
+jclass GetDoubleClass() {
+    return s_double_class;
+}
+
+jmethodID GetDoubleConstructor() {
+    return s_double_constructor;
+}
+
+jfieldID GetDoubleValueField() {
+    return s_double_value_field;
+}
+
+jclass GetIntegerClass() {
+    return s_integer_class;
+}
+
+jmethodID GetIntegerConstructor() {
+    return s_integer_constructor;
+}
+
+jfieldID GetIntegerValueField() {
+    return s_integer_value_field;
+}
+
+jclass GetBooleanClass() {
+    return s_boolean_class;
+}
+
+jmethodID GetBooleanConstructor() {
+    return s_boolean_constructor;
+}
+
+jfieldID GetBooleanValueField() {
+    return s_boolean_value_field;
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+    s_java_vm = vm;
+
+    JNIEnv* env;
+    if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION) != JNI_OK)
+        return JNI_ERR;
+
+    // Initialize Java classes
+    const jclass native_library_class = env->FindClass("org/yuzu/yuzu_emu/NativeLibrary");
+    s_native_library_class = reinterpret_cast<jclass>(env->NewGlobalRef(native_library_class));
+    s_disk_cache_progress_class = reinterpret_cast<jclass>(env->NewGlobalRef(
+        env->FindClass("org/yuzu/yuzu_emu/disk_shader_cache/DiskShaderCacheProgress")));
+    s_load_callback_stage_class = reinterpret_cast<jclass>(env->NewGlobalRef(env->FindClass(
+        "org/yuzu/yuzu_emu/disk_shader_cache/DiskShaderCacheProgress$LoadCallbackStage")));
+
+    const jclass game_dir_class = env->FindClass("org/yuzu/yuzu_emu/model/GameDir");
+    s_game_dir_class = reinterpret_cast<jclass>(env->NewGlobalRef(game_dir_class));
+    s_game_dir_constructor = env->GetMethodID(game_dir_class, "<init>", "(Ljava/lang/String;Z)V");
+    env->DeleteLocalRef(game_dir_class);
+
+    // Initialize methods
+    s_exit_emulation_activity =
+        env->GetStaticMethodID(s_native_library_class, "exitEmulationActivity", "(I)V");
+    s_disk_cache_load_progress =
+        env->GetStaticMethodID(s_disk_cache_progress_class, "loadProgress", "(III)V");
+    s_on_emulation_started =
+        env->GetStaticMethodID(s_native_library_class, "onEmulationStarted", "()V");
+    s_on_emulation_stopped =
+        env->GetStaticMethodID(s_native_library_class, "onEmulationStopped", "(I)V");
+    s_on_program_changed =
+        env->GetStaticMethodID(s_native_library_class, "onProgramChanged", "(I)V");
+
+    const jclass game_class = env->FindClass("org/yuzu/yuzu_emu/model/Game");
+    s_game_class = reinterpret_cast<jclass>(env->NewGlobalRef(game_class));
+    s_game_constructor = env->GetMethodID(game_class, "<init>",
+                                          "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/"
+                                          "String;Ljava/lang/String;Ljava/lang/String;Z)V");
+    s_game_title_field = env->GetFieldID(game_class, "title", "Ljava/lang/String;");
+    s_game_path_field = env->GetFieldID(game_class, "path", "Ljava/lang/String;");
+    s_game_program_id_field = env->GetFieldID(game_class, "programId", "Ljava/lang/String;");
+    s_game_developer_field = env->GetFieldID(game_class, "developer", "Ljava/lang/String;");
+    s_game_version_field = env->GetFieldID(game_class, "version", "Ljava/lang/String;");
+    s_game_is_homebrew_field = env->GetFieldID(game_class, "isHomebrew", "Z");
+    env->DeleteLocalRef(game_class);
+
+    const jclass string_class = env->FindClass("java/lang/String");
+    s_string_class = reinterpret_cast<jclass>(env->NewGlobalRef(string_class));
+    env->DeleteLocalRef(string_class);
+
+    const jclass pair_class = env->FindClass("kotlin/Pair");
+    s_pair_class = reinterpret_cast<jclass>(env->NewGlobalRef(pair_class));
+    s_pair_constructor =
+        env->GetMethodID(pair_class, "<init>", "(Ljava/lang/Object;Ljava/lang/Object;)V");
+    s_pair_first_field = env->GetFieldID(pair_class, "first", "Ljava/lang/Object;");
+    s_pair_second_field = env->GetFieldID(pair_class, "second", "Ljava/lang/Object;");
+    env->DeleteLocalRef(pair_class);
+
+    const jclass overlay_control_data_class =
+        env->FindClass("org/yuzu/yuzu_emu/overlay/model/OverlayControlData");
+    s_overlay_control_data_class =
+        reinterpret_cast<jclass>(env->NewGlobalRef(overlay_control_data_class));
+    s_overlay_control_data_constructor =
+        env->GetMethodID(overlay_control_data_class, "<init>",
+                         "(Ljava/lang/String;ZLkotlin/Pair;Lkotlin/Pair;Lkotlin/Pair;)V");
+    s_overlay_control_data_id_field =
+        env->GetFieldID(overlay_control_data_class, "id", "Ljava/lang/String;");
+    s_overlay_control_data_enabled_field =
+        env->GetFieldID(overlay_control_data_class, "enabled", "Z");
+    s_overlay_control_data_landscape_position_field =
+        env->GetFieldID(overlay_control_data_class, "landscapePosition", "Lkotlin/Pair;");
+    s_overlay_control_data_portrait_position_field =
+        env->GetFieldID(overlay_control_data_class, "portraitPosition", "Lkotlin/Pair;");
+    s_overlay_control_data_foldable_position_field =
+        env->GetFieldID(overlay_control_data_class, "foldablePosition", "Lkotlin/Pair;");
+    env->DeleteLocalRef(overlay_control_data_class);
+
+    const jclass patch_class = env->FindClass("org/yuzu/yuzu_emu/model/Patch");
+    s_patch_class = reinterpret_cast<jclass>(env->NewGlobalRef(patch_class));
+    s_patch_constructor = env->GetMethodID(
+        patch_class, "<init>",
+        "(ZLjava/lang/String;Ljava/lang/String;ILjava/lang/String;Ljava/lang/String;)V");
+    s_patch_enabled_field = env->GetFieldID(patch_class, "enabled", "Z");
+    s_patch_name_field = env->GetFieldID(patch_class, "name", "Ljava/lang/String;");
+    s_patch_version_field = env->GetFieldID(patch_class, "version", "Ljava/lang/String;");
+    s_patch_type_field = env->GetFieldID(patch_class, "type", "I");
+    s_patch_program_id_field = env->GetFieldID(patch_class, "programId", "Ljava/lang/String;");
+    s_patch_title_id_field = env->GetFieldID(patch_class, "titleId", "Ljava/lang/String;");
+    env->DeleteLocalRef(patch_class);
+
+    const jclass double_class = env->FindClass("java/lang/Double");
+    s_double_class = reinterpret_cast<jclass>(env->NewGlobalRef(double_class));
+    s_double_constructor = env->GetMethodID(double_class, "<init>", "(D)V");
+    s_double_value_field = env->GetFieldID(double_class, "value", "D");
+    env->DeleteLocalRef(double_class);
+
+    const jclass int_class = env->FindClass("java/lang/Integer");
+    s_integer_class = reinterpret_cast<jclass>(env->NewGlobalRef(int_class));
+    s_integer_constructor = env->GetMethodID(int_class, "<init>", "(I)V");
+    s_integer_value_field = env->GetFieldID(int_class, "value", "I");
+    env->DeleteLocalRef(int_class);
+
+    const jclass boolean_class = env->FindClass("java/lang/Boolean");
+    s_boolean_class = reinterpret_cast<jclass>(env->NewGlobalRef(boolean_class));
+    s_boolean_constructor = env->GetMethodID(boolean_class, "<init>", "(Z)V");
+    s_boolean_value_field = env->GetFieldID(boolean_class, "value", "Z");
+    env->DeleteLocalRef(boolean_class);
+
+    // Initialize Android Storage
+    Common::FS::Android::RegisterCallbacks(env, s_native_library_class);
+
+    // Initialize applets
+    Common::Android::SoftwareKeyboard::InitJNI(env);
+
+    return JNI_VERSION;
+}
+
+void JNI_OnUnload(JavaVM* vm, void* reserved) {
+    JNIEnv* env;
+    if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION) != JNI_OK) {
+        return;
+    }
+
+    // UnInitialize Android Storage
+    Common::FS::Android::UnRegisterCallbacks();
+    env->DeleteGlobalRef(s_native_library_class);
+    env->DeleteGlobalRef(s_disk_cache_progress_class);
+    env->DeleteGlobalRef(s_load_callback_stage_class);
+    env->DeleteGlobalRef(s_game_dir_class);
+    env->DeleteGlobalRef(s_game_class);
+    env->DeleteGlobalRef(s_string_class);
+    env->DeleteGlobalRef(s_pair_class);
+    env->DeleteGlobalRef(s_overlay_control_data_class);
+    env->DeleteGlobalRef(s_patch_class);
+    env->DeleteGlobalRef(s_double_class);
+    env->DeleteGlobalRef(s_integer_class);
+    env->DeleteGlobalRef(s_boolean_class);
+
+    // UnInitialize applets
+    SoftwareKeyboard::CleanupJNI(env);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+} // namespace Common::Android
diff --git a/src/common/android/id_cache.h b/src/common/android/id_cache.h
new file mode 100644
index 000000000..47802f96c
--- /dev/null
+++ b/src/common/android/id_cache.h
@@ -0,0 +1,88 @@
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <future>
+#include <jni.h>
+
+#include "video_core/rasterizer_interface.h"
+
+namespace Common::Android {
+
+JNIEnv* GetEnvForThread();
+
+/**
+ * Starts a new thread to run JNI. Intended to be used when you must run JNI from a fiber.
+ * @tparam T Typename of the return value for the work param
+ * @param work Lambda that runs JNI code. This function will take care of attaching this thread to
+ * the JVM
+ * @return The result from the work lambda param
+ */
+template <typename T = void>
+T RunJNIOnFiber(const std::function<T(JNIEnv*)>& work) {
+    std::future<T> j_result = std::async(std::launch::async, [&] {
+        auto env = GetEnvForThread();
+        return work(env);
+    });
+    return j_result.get();
+}
+
+jclass GetNativeLibraryClass();
+
+jclass GetDiskCacheProgressClass();
+jclass GetDiskCacheLoadCallbackStageClass();
+jclass GetGameDirClass();
+jmethodID GetGameDirConstructor();
+jmethodID GetDiskCacheLoadProgress();
+
+jmethodID GetExitEmulationActivity();
+jmethodID GetOnEmulationStarted();
+jmethodID GetOnEmulationStopped();
+jmethodID GetOnProgramChanged();
+
+jclass GetGameClass();
+jmethodID GetGameConstructor();
+jfieldID GetGameTitleField();
+jfieldID GetGamePathField();
+jfieldID GetGameProgramIdField();
+jfieldID GetGameDeveloperField();
+jfieldID GetGameVersionField();
+jfieldID GetGameIsHomebrewField();
+
+jclass GetStringClass();
+jclass GetPairClass();
+jmethodID GetPairConstructor();
+jfieldID GetPairFirstField();
+jfieldID GetPairSecondField();
+
+jclass GetOverlayControlDataClass();
+jmethodID GetOverlayControlDataConstructor();
+jfieldID GetOverlayControlDataIdField();
+jfieldID GetOverlayControlDataEnabledField();
+jfieldID GetOverlayControlDataLandscapePositionField();
+jfieldID GetOverlayControlDataPortraitPositionField();
+jfieldID GetOverlayControlDataFoldablePositionField();
+
+jclass GetPatchClass();
+jmethodID GetPatchConstructor();
+jfieldID GetPatchEnabledField();
+jfieldID GetPatchNameField();
+jfieldID GetPatchVersionField();
+jfieldID GetPatchTypeField();
+jfieldID GetPatchProgramIdField();
+jfieldID GetPatchTitleIdField();
+
+jclass GetDoubleClass();
+jmethodID GetDoubleConstructor();
+jfieldID GetDoubleValueField();
+
+jclass GetIntegerClass();
+jmethodID GetIntegerConstructor();
+jfieldID GetIntegerValueField();
+
+jclass GetBooleanClass();
+jmethodID GetBooleanConstructor();
+jfieldID GetBooleanValueField();
+
+} // namespace Common::Android