// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <codecvt>
#include <locale>
#include <string>
#include <string_view>
#include <android/api-level.h>
#include <android/native_window_jni.h>
#include "common/detached_tasks.h"
#include "common/fs/path_util.h"
#include "common/logging/backend.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/scm_rev.h"
#include "common/scope_exit.h"
#include "common/settings.h"
#include "core/core.h"
#include "core/cpu_manager.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/registered_cache.h"
#include "core/file_sys/vfs_real.h"
#include "core/hid/hid_core.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/perf_stats.h"
#include "jni/config.h"
#include "jni/emu_window/emu_window.h"
#include "jni/id_cache.h"
#include "video_core/rasterizer_interface.h"
namespace {
class EmulationSession final {
public:
EmulationSession() = default;
~EmulationSession() = default;
static EmulationSession& GetInstance() {
return s_instance;
}
const Core::System& System() const {
return system;
}
Core::System& System() {
return system;
}
const EmuWindow_Android& Window() const {
return *window;
}
EmuWindow_Android& Window() {
return *window;
}
ANativeWindow* NativeWindow() const {
return native_window;
}
void SetNativeWindow(ANativeWindow* native_window_) {
native_window = native_window_;
}
bool IsRunning() const {
std::scoped_lock lock(mutex);
return is_running;
}
const Core::PerfStatsResults& PerfStats() const {
std::scoped_lock perf_stats_lock(perf_stats_mutex);
return perf_stats;
}
void SurfaceChanged() {
if (!IsRunning()) {
return;
}
window->OnSurfaceChanged(native_window);
}
Core::SystemResultStatus InitializeEmulation(const std::string& filepath) {
std::scoped_lock lock(mutex);
// Loads the configuration.
Config{};
// Create the render window.
window = std::make_unique<EmuWindow_Android>(&input_subsystem, native_window);
// Initialize system.
system.SetShuttingDown(false);
system.Initialize();
system.ApplySettings();
system.HIDCore().ReloadInputDevices();
system.SetContentProvider(std::make_unique<FileSys::ContentProviderUnion>());
system.SetFilesystem(std::make_shared<FileSys::RealVfsFilesystem>());
system.GetFileSystemController().CreateFactories(*system.GetFilesystem());
// Load the ROM.
load_result = system.Load(EmulationSession::GetInstance().Window(), filepath);
if (load_result != Core::SystemResultStatus::Success) {
return load_result;
}
// Complete initialization.
system.GPU().Start();
system.GetCpuManager().OnGpuReady();
system.RegisterExitCallback([&] { HaltEmulation(); });
return Core::SystemResultStatus::Success;
}
void ShutdownEmulation() {
std::scoped_lock lock(mutex);
is_running = false;
// Unload user input.
system.HIDCore().UnloadInputDevices();
// Shutdown the main emulated process
if (load_result == Core::SystemResultStatus::Success) {
system.DetachDebugger();
system.ShutdownMainProcess();
detached_tasks.WaitForAllTasks();
load_result = Core::SystemResultStatus::ErrorNotInitialized;
}
// Tear down the render window.
window.reset();
}
void HaltEmulation() {
std::scoped_lock lock(mutex);
is_running = false;
cv.notify_one();
}
void RunEmulation() {
{
std::scoped_lock lock(mutex);
is_running = true;
}
void(system.Run());
if (system.DebuggerEnabled()) {
system.InitializeDebugger();
}
while (true) {
{
std::unique_lock lock(mutex);
if (cv.wait_for(lock, std::chrono::milliseconds(100),
[&]() { return !is_running; })) {
// Emulation halted.
break;
}
}
{
// Refresh performance stats.
std::scoped_lock perf_stats_lock(perf_stats_mutex);
perf_stats = system.GetAndResetPerfStats();
}
}
}
private:
static EmulationSession s_instance;
ANativeWindow* native_window{};
InputCommon::InputSubsystem input_subsystem;
Common::DetachedTasks detached_tasks;
Core::System system;
Core::PerfStatsResults perf_stats{};
std::unique_ptr<EmuWindow_Android> window;
std::condition_variable_any cv;
bool is_running{};
Core::SystemResultStatus load_result{Core::SystemResultStatus::ErrorNotInitialized};
mutable std::mutex perf_stats_mutex;
mutable std::mutex mutex;
};
/*static*/ EmulationSession EmulationSession::s_instance;
std::string UTF16ToUTF8(std::u16string_view input) {
std::wstring_convert<std::codecvt_utf8_utf16<char16_t>, char16_t> convert;
return convert.to_bytes(input.data(), input.data() + input.size());
}
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), length);
const std::string converted_string = UTF16ToUTF8(string_view);
env->ReleaseStringChars(jstr, jchars);
return converted_string;
}
} // Anonymous namespace
static Core::SystemResultStatus RunEmulation(const std::string& filepath) {
Common::Log::Initialize();
Common::Log::SetColorConsoleBackendEnabled(true);
Common::Log::Start();
MicroProfileOnThreadCreate("EmuThread");
SCOPE_EXIT({ MicroProfileShutdown(); });
LOG_INFO(Frontend, "starting");
if (filepath.empty()) {
LOG_CRITICAL(Frontend, "failed to load: filepath empty!");
return Core::SystemResultStatus::ErrorLoader;
}
SCOPE_EXIT({ EmulationSession::GetInstance().ShutdownEmulation(); });
const auto result = EmulationSession::GetInstance().InitializeEmulation(filepath);
if (result != Core::SystemResultStatus::Success) {
return result;
}
EmulationSession::GetInstance().RunEmulation();
return Core::SystemResultStatus::Success;
}
extern "C" {
void Java_org_yuzu_yuzu_1emu_NativeLibrary_SurfaceChanged(JNIEnv* env,
[[maybe_unused]] jclass clazz,
jobject surf) {
EmulationSession::GetInstance().SetNativeWindow(ANativeWindow_fromSurface(env, surf));
EmulationSession::GetInstance().SurfaceChanged();
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_SurfaceDestroyed(JNIEnv* env,
[[maybe_unused]] jclass clazz) {
ANativeWindow_release(EmulationSession::GetInstance().NativeWindow());
EmulationSession::GetInstance().SetNativeWindow(nullptr);
EmulationSession::GetInstance().SurfaceChanged();
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_DoFrame(JNIEnv* env, [[maybe_unused]] jclass clazz) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_NotifyOrientationChange(JNIEnv* env,
[[maybe_unused]] jclass clazz,
jint layout_option,
jint rotation) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_SetAppDirectory(JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_directory) {
Common::FS::SetAppDirectory(GetJString(env, j_directory));
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_ReloadKeys(JNIEnv* env,
[[maybe_unused]] jclass clazz) {
Core::Crypto::KeyManager::Instance().ReloadKeys();
return static_cast<jboolean>(Core::Crypto::KeyManager::Instance().AreKeysLoaded());
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_UnPauseEmulation([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_PauseEmulation([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_StopEmulation([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
EmulationSession::GetInstance().HaltEmulation();
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_IsRunning([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
return static_cast<jboolean>(EmulationSession::GetInstance().IsRunning());
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadEvent([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
[[maybe_unused]] jstring j_device,
jint j_button, jint action) {
if (EmulationSession::GetInstance().IsRunning()) {
EmulationSession::GetInstance().Window().OnGamepadEvent(j_button, action != 0);
}
return static_cast<jboolean>(true);
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadMoveEvent([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_device, jint axis,
jfloat x, jfloat y) {
// Clamp joystick movement to supported minimum and maximum.
x = std::clamp(x, -1.f, 1.f);
y = std::clamp(-y, -1.f, 1.f);
// Clamp the input to a circle.
float r = x * x + y * y;
if (r > 1.0f) {
r = std::sqrt(r);
x /= r;
y /= r;
}
if (EmulationSession::GetInstance().IsRunning()) {
EmulationSession::GetInstance().Window().OnGamepadMoveEvent(x, y);
}
return static_cast<jboolean>(false);
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadAxisEvent([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_device, jint axis_id,
jfloat axis_val) {
return {};
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchEvent([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz, jfloat x,
jfloat y, jboolean pressed) {
if (EmulationSession::GetInstance().IsRunning()) {
return static_cast<jboolean>(
EmulationSession::GetInstance().Window().OnTouchEvent(x, y, pressed));
}
return static_cast<jboolean>(false);
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchMoved([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz, jfloat x,
jfloat y) {
if (EmulationSession::GetInstance().IsRunning()) {
EmulationSession::GetInstance().Window().OnTouchMoved(x, y);
}
}
jintArray Java_org_yuzu_yuzu_1emu_NativeLibrary_GetIcon([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
[[maybe_unused]] jstring j_file) {
return {};
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetTitle([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
[[maybe_unused]] jstring j_filename) {
return env->NewStringUTF("");
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetDescription([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_filename) {
return j_filename;
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetGameId([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_filename) {
return j_filename;
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetRegions([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
[[maybe_unused]] jstring j_filename) {
return env->NewStringUTF("");
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetCompany([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
[[maybe_unused]] jstring j_filename) {
return env->NewStringUTF("");
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetGitRevision([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
return {};
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_CreateConfigFile
[[maybe_unused]] (JNIEnv* env, [[maybe_unused]] jclass clazz) {
Config{};
}
jint Java_org_yuzu_yuzu_1emu_NativeLibrary_DefaultCPUCore([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
return {};
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_Run__Ljava_lang_String_2Ljava_lang_String_2Z(
[[maybe_unused]] JNIEnv* env, [[maybe_unused]] jclass clazz, [[maybe_unused]] jstring j_file,
[[maybe_unused]] jstring j_savestate, [[maybe_unused]] jboolean j_delete_savestate) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_ReloadSettings([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
Config{};
}
jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_GetUserSetting([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_game_id, jstring j_section,
jstring j_key) {
std::string_view game_id = env->GetStringUTFChars(j_game_id, 0);
std::string_view section = env->GetStringUTFChars(j_section, 0);
std::string_view key = env->GetStringUTFChars(j_key, 0);
env->ReleaseStringUTFChars(j_game_id, game_id.data());
env->ReleaseStringUTFChars(j_section, section.data());
env->ReleaseStringUTFChars(j_key, key.data());
return env->NewStringUTF("");
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_SetUserSetting([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_game_id, jstring j_section,
jstring j_key, jstring j_value) {
std::string_view game_id = env->GetStringUTFChars(j_game_id, 0);
std::string_view section = env->GetStringUTFChars(j_section, 0);
std::string_view key = env->GetStringUTFChars(j_key, 0);
std::string_view value = env->GetStringUTFChars(j_value, 0);
env->ReleaseStringUTFChars(j_game_id, game_id.data());
env->ReleaseStringUTFChars(j_section, section.data());
env->ReleaseStringUTFChars(j_key, key.data());
env->ReleaseStringUTFChars(j_value, value.data());
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_InitGameIni([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_game_id) {
std::string_view game_id = env->GetStringUTFChars(j_game_id, 0);
env->ReleaseStringUTFChars(j_game_id, game_id.data());
}
jdoubleArray Java_org_yuzu_yuzu_1emu_NativeLibrary_GetPerfStats([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
jdoubleArray j_stats = env->NewDoubleArray(4);
if (EmulationSession::GetInstance().IsRunning()) {
const auto results = EmulationSession::GetInstance().PerfStats();
// Converting the structure into an array makes it easier to pass it to the frontend
double stats[4] = {results.system_fps, results.average_game_fps, results.frametime,
results.emulation_speed};
env->SetDoubleArrayRegion(j_stats, 0, 4, stats);
}
return j_stats;
}
void Java_org_yuzu_yuzu_1emu_utils_DirectoryInitialization_SetSysDirectory(
[[maybe_unused]] JNIEnv* env, [[maybe_unused]] jclass clazz, jstring j_path) {}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_Run__Ljava_lang_String_2([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz,
jstring j_path) {
const std::string path = GetJString(env, j_path);
const Core::SystemResultStatus result{RunEmulation(path)};
if (result != Core::SystemResultStatus::Success) {
env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(),
IDCache::GetExitEmulationActivity(), static_cast<int>(result));
}
}
void Java_org_yuzu_yuzu_1emu_NativeLibrary_LogDeviceInfo([[maybe_unused]] JNIEnv* env,
[[maybe_unused]] jclass clazz) {
LOG_INFO(Frontend, "yuzu Version: {}-{}", Common::g_scm_branch, Common::g_scm_desc);
LOG_INFO(Frontend, "Host OS: Android API level {}", android_get_device_api_level());
}
} // extern "C"