[core, android] Initial playtime implementation (#2535)

So firstly, playtime code is moved to src/common and qt specific code to yuzu/utils.cpp.

The dependency on ProfileManager was removed because it was working properly on Android, and I think a shared playtime is better behavior.
Now, playtime is stored in a file called "playtime.bin".

JNI code is from Azahar although modified by me, as well as that I added code to reset the game's playtime which was missing for some reason on there.

Before this gets merged, I plan to add the ability to manually edit the database as well.

Note: Code still needs a bit of cleanup.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2535
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: inix <Nixy01@proton.me>
Co-committed-by: inix <Nixy01@proton.me>

src/android/app/src/main/java/org/yuzu/yuzu_emu/NativeLibrary.kt

@@ -206,6 +206,17 @@ object NativeLibrary {
         ErrorUnknown
     }
 
+    /**
+     *  playtime tracking
+     */
+    external fun playTimeManagerInit()
+    external fun playTimeManagerStart()
+    external fun playTimeManagerStop()
+    external fun playTimeManagerGetPlayTime(programId: String): Long
+    external fun playTimeManagerGetCurrentTitleId(): Long
+    external fun playTimeManagerResetProgramPlayTime(programId: String)
+    external fun playTimeManagerSetPlayTime(programId: String, playTimeSeconds: Long)
+
     var coreErrorAlertResult = false
     val coreErrorAlertLock = Object()
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/YuzuApplication.kt

@@ -53,6 +53,7 @@ class YuzuApplication : Application() {
         application = this
         documentsTree = DocumentsTree()
         DirectoryInitialization.start()
+        NativeLibrary.playTimeManagerInit()
         GpuDriverHelper.initializeDriverParameters()
         NativeInput.reloadInputDevices()
         NativeLibrary.logDeviceInfo()

src/android/app/src/main/java/org/yuzu/yuzu_emu/activities/EmulationActivity.kt

@@ -61,6 +61,7 @@ import org.yuzu.yuzu_emu.utils.ThemeHelper
 import java.text.NumberFormat
 import kotlin.math.roundToInt
 import org.yuzu.yuzu_emu.utils.ForegroundService
+import androidx.core.os.BundleCompat
 
 class EmulationActivity : AppCompatActivity(), SensorEventListener {
     private lateinit var binding: ActivityEmulationBinding
@@ -326,6 +327,11 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
 
     override fun onAccuracyChanged(sensor: Sensor, i: Int) {}
 
+    override fun onDestroy() {
+        super.onDestroy()
+        NativeLibrary.playTimeManagerStop()
+    }
+
     private fun enableFullscreenImmersive() {
         WindowCompat.setDecorFitsSystemWindows(window, false)
 
@@ -530,6 +536,8 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
 
     fun onEmulationStarted() {
         emulationViewModel.setEmulationStarted(true)
+        NativeLibrary.playTimeManagerStart()
+
     }
 
     fun onEmulationStopped(status: Int) {

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/EmulationFragment.kt

@@ -1635,6 +1635,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
                 Log.debug("[EmulationFragment] Pausing emulation.")
 
                 NativeLibrary.pauseEmulation()
+                NativeLibrary.playTimeManagerStop()
 
                 state = State.PAUSED
             } else {
@@ -1725,6 +1726,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
                 State.PAUSED -> {
                     Log.debug("[EmulationFragment] Resuming emulation.")
                     NativeLibrary.unpauseEmulation()
+                    NativeLibrary.playTimeManagerStart()
                 }
 
                 else -> Log.debug("[EmulationFragment] Bug, run called while already running.")

src/android/app/src/main/java/org/yuzu/yuzu_emu/fragments/GamePropertiesFragment.kt

@@ -1,9 +1,6 @@
 // SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-// SPDX-FileCopyrightText: 2025 Eden Emulator Project
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 package org.yuzu.yuzu_emu.fragments
 
 import android.content.Intent
@@ -31,6 +28,7 @@ import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.yuzu.yuzu_emu.HomeNavigationDirections
+import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.YuzuApplication
 import org.yuzu.yuzu_emu.adapters.GamePropertiesAdapter
@@ -112,6 +110,8 @@ class GamePropertiesFragment : Fragment() {
         binding.title.text = args.game.title
         binding.title.marquee()
 
+        getPlayTime()
+
         binding.buttonStart.setOnClickListener {
             LaunchGameDialogFragment.newInstance(args.game)
                 .show(childFragmentManager, LaunchGameDialogFragment.TAG)
@@ -136,6 +136,109 @@ class GamePropertiesFragment : Fragment() {
         gamesViewModel.reloadGames(true)
     }
 
+    private fun getPlayTime() {
+        binding.playtime.text = buildString {
+            val playTimeSeconds = NativeLibrary.playTimeManagerGetPlayTime(args.game.programId)
+
+            val hours = playTimeSeconds / 3600
+            val minutes = (playTimeSeconds % 3600) / 60
+            val seconds = playTimeSeconds % 60
+
+            val readablePlayTime = when {
+                hours > 0 -> "${hours}h ${minutes}m ${seconds}s"
+                minutes > 0 -> "${minutes}m ${seconds}s"
+                else -> "${seconds}s"
+            }
+
+            append(getString(R.string.playtime))
+            append(readablePlayTime)
+        }
+
+        binding.playtime.setOnClickListener {
+            showEditPlaytimeDialog()
+        }
+    }
+
+    private fun showEditPlaytimeDialog() {
+        val dialogView = layoutInflater.inflate(R.layout.dialog_edit_playtime, null)
+        val hoursLayout =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputLayout>(R.id.layout_hours)
+        val minutesLayout =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputLayout>(R.id.layout_minutes)
+        val secondsLayout =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputLayout>(R.id.layout_seconds)
+        val hoursInput =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputEditText>(R.id.input_hours)
+        val minutesInput =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputEditText>(R.id.input_minutes)
+        val secondsInput =
+            dialogView.findViewById<com.google.android.material.textfield.TextInputEditText>(R.id.input_seconds)
+
+        val playTimeSeconds = NativeLibrary.playTimeManagerGetPlayTime(args.game.programId)
+        val hours = playTimeSeconds / 3600
+        val minutes = (playTimeSeconds % 3600) / 60
+        val seconds = playTimeSeconds % 60
+
+        hoursInput.setText(hours.toString())
+        minutesInput.setText(minutes.toString())
+        secondsInput.setText(seconds.toString())
+
+        val dialog = com.google.android.material.dialog.MaterialAlertDialogBuilder(requireContext())
+            .setTitle(R.string.edit_playtime)
+            .setView(dialogView)
+            .setPositiveButton(android.R.string.ok, null)
+            .setNegativeButton(android.R.string.cancel, null)
+            .create()
+
+        dialog.setOnShowListener {
+            val positiveButton = dialog.getButton(android.app.AlertDialog.BUTTON_POSITIVE)
+            positiveButton.setOnClickListener {
+                hoursLayout.error = null
+                minutesLayout.error = null
+                secondsLayout.error = null
+
+                val hoursText = hoursInput.text.toString()
+                val minutesText = minutesInput.text.toString()
+                val secondsText = secondsInput.text.toString()
+
+                val hoursValue = hoursText.toLongOrNull() ?: 0
+                val minutesValue = minutesText.toLongOrNull() ?: 0
+                val secondsValue = secondsText.toLongOrNull() ?: 0
+
+                var hasError = false
+
+                // normally cant be above 9999
+                if (hoursValue < 0 || hoursValue > 9999) {
+                    hoursLayout.error = getString(R.string.hours_must_be_between_0_and_9999)
+                    hasError = true
+                }
+
+                if (minutesValue < 0 || minutesValue > 59) {
+                    minutesLayout.error = getString(R.string.minutes_must_be_between_0_and_59)
+                    hasError = true
+                }
+
+                if (secondsValue < 0 || secondsValue > 59) {
+                    secondsLayout.error = getString(R.string.seconds_must_be_between_0_and_59)
+                    hasError = true
+                }
+
+                if (!hasError) {
+                    val totalSeconds = hoursValue * 3600 + minutesValue * 60 + secondsValue
+                    NativeLibrary.playTimeManagerSetPlayTime(args.game.programId, totalSeconds)
+                    getPlayTime()
+                    Toast.makeText(
+                        requireContext(),
+                        R.string.playtime_updated_successfully,
+                        Toast.LENGTH_SHORT
+                    ).show()
+                    dialog.dismiss()
+                }
+            }
+        }
+
+        dialog.show()
+    }
     private fun reloadList() {
         _binding ?: return
 
@@ -324,6 +427,31 @@ class GamePropertiesFragment : Fragment() {
                         )
                     )
                 }
+                if (NativeLibrary.playTimeManagerGetPlayTime(args.game.programId) > 0) {
+                    add(
+                        SubmenuProperty(
+                            R.string.reset_playtime,
+                            R.string.reset_playtime_description,
+                            R.drawable.ic_delete
+                        ) {
+                            MessageDialogFragment.newInstance(
+                                requireActivity(),
+                                titleId = R.string.reset_playtime,
+                                descriptionId = R.string.reset_playtime_warning_description,
+                                positiveAction = {
+                                    NativeLibrary.playTimeManagerResetProgramPlayTime( args.game.programId)
+                                    Toast.makeText(
+                                        YuzuApplication.appContext,
+                                        R.string.playtime_reset_successfully,
+                                        Toast.LENGTH_SHORT
+                                    ).show()
+                                    getPlayTime()
+                                    homeViewModel.reloadPropertiesList(true)
+                                }
+                            ).show(parentFragmentManager, MessageDialogFragment.TAG)
+                        }
+                    )
+                }
             }
         }
         binding.listProperties.apply {
@@ -336,6 +464,7 @@ class GamePropertiesFragment : Fragment() {
     override fun onResume() {
         super.onResume()
         driverViewModel.updateDriverNameForGame(args.game)
+        getPlayTime()
         reloadList()
     }
 

src/android/app/src/main/jni/native.cpp

@@ -36,6 +36,7 @@
 #include "common/scope_exit.h"
 #include "common/settings.h"
 #include "common/string_util.h"
+#include "frontend_common/play_time_manager.h"
 #include "core/core.h"
 #include "core/cpu_manager.h"
 #include "core/crypto/key_manager.h"
@@ -85,6 +86,9 @@ std::atomic<int> g_battery_percentage = {100};
 std::atomic<bool> g_is_charging = {false};
 std::atomic<bool> g_has_battery = {true};
 
+// playtime
+std::unique_ptr<PlayTime::PlayTimeManager> play_time_manager;
+
 EmulationSession::EmulationSession() {
     m_vfs = std::make_shared<FileSys::RealVfsFilesystem>();
 }
@@ -733,6 +737,56 @@ void Java_org_yuzu_yuzu_1emu_NativeLibrary_initializeEmptyUserDirectory(JNIEnv*
     }
 }
 
+void Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerInit(JNIEnv* env, jobject obj) {
+    // for some reason the full user directory isnt initialized in Android, so we need to create it
+    const auto play_time_dir = Common::FS::GetEdenPath(Common::FS::EdenPath::PlayTimeDir);
+    if (!Common::FS::IsDir(play_time_dir)) {
+        if (!Common::FS::CreateDir(play_time_dir)) {
+            LOG_WARNING(Frontend, "Failed to create play time directory");
+        }
+    }
+
+    play_time_manager = std::make_unique<PlayTime::PlayTimeManager>();
+}
+
+void Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerStart(JNIEnv* env, jobject obj) {
+    if (play_time_manager) {
+        play_time_manager->SetProgramId(EmulationSession::GetInstance().System().GetApplicationProcessProgramID());
+        play_time_manager->Start();
+    }
+}
+
+void Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerStop(JNIEnv* env, jobject obj) {
+    play_time_manager->Stop();
+}
+
+jlong Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerGetPlayTime(JNIEnv* env, jobject obj,
+                                                                       jstring jprogramId) {
+    u64 program_id = EmulationSession::GetProgramId(env, jprogramId);
+    return play_time_manager->GetPlayTime(program_id);
+}
+
+jlong Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerGetCurrentTitleId(JNIEnv* env,
+                                                                             jobject obj) {
+    return EmulationSession::GetInstance().System().GetApplicationProcessProgramID();
+}
+
+void Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerResetProgramPlayTime(JNIEnv* env, jobject obj,
+                                                                jstring jprogramId) {
+    u64 program_id = EmulationSession::GetProgramId(env, jprogramId);
+    if (play_time_manager) {
+        play_time_manager->ResetProgramPlayTime(program_id);
+    }
+}
+
+void Java_org_yuzu_yuzu_1emu_NativeLibrary_playTimeManagerSetPlayTime(JNIEnv* env, jobject obj,
+                                                                jstring jprogramId, jlong playTimeSeconds) {
+    u64 program_id = EmulationSession::GetProgramId(env, jprogramId);
+    if (play_time_manager) {
+        play_time_manager->SetPlayTime(program_id, static_cast<u64>(playTimeSeconds));
+    }
+}
+
 jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getAppletLaunchPath(JNIEnv* env, jclass clazz,
                                                                   jlong jid) {
     auto bis_system =

src/android/app/src/main/res/layout-w600dp/fragment_game_properties.xml

@@ -105,6 +105,16 @@
             android:textAlignment="center"
             tools:text="deko_basic" />
 
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/playtime"
+            style="?attr/textAppearanceBodyMedium"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="16dp"
+            android:layout_marginBottom="8dp"
+            android:textAlignment="center"
+            tools:text="Game Playtime" />
+
     </LinearLayout>
 
     <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton

src/android/app/src/main/res/layout/dialog_edit_playtime.xml

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:padding="16dp">
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/layout_hours"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginEnd="8dp"
+        android:hint="@string/hours"
+        app:boxBackgroundMode="outline">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/input_hours"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="number"
+            android:maxLength="4" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/layout_minutes"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:layout_marginEnd="8dp"
+        android:hint="@string/minutes"
+        app:boxBackgroundMode="outline">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/input_minutes"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="number"
+            android:maxLength="2" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+    <com.google.android.material.textfield.TextInputLayout
+        android:id="@+id/layout_seconds"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:hint="@string/seconds"
+        app:boxBackgroundMode="outline">
+
+        <com.google.android.material.textfield.TextInputEditText
+            android:id="@+id/input_seconds"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="number"
+            android:maxLength="2" />
+    </com.google.android.material.textfield.TextInputLayout>
+
+</LinearLayout>

src/android/app/src/main/res/layout/fragment_game_properties.xml

@@ -74,12 +74,22 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_marginTop="12dp"
-                android:layout_marginBottom="12dp"
+                android:layout_marginBottom="2dp"
                 android:layout_marginHorizontal="16dp"
                 android:requiresFadingEdge="horizontal"
                 android:textAlignment="center"
                 tools:text="deko_basic" />
 
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/playtime"
+                style="?attr/textAppearanceBodyMedium"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="8dp"
+                android:textAlignment="center"
+                tools:text="Game Playtime" />
+
+
             <androidx.recyclerview.widget.RecyclerView
                 android:id="@+id/list_properties"
                 android:layout_width="match_parent"

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

@@ -756,6 +756,18 @@
     <string name="copy_details">Copy details</string>
     <string name="add_ons">Add-ons</string>
     <string name="add_ons_description">Toggle mods, updates and DLC</string>
+    <string name="playtime">Playtime:</string>
+    <string name="reset_playtime">Clear Playtime</string>
+    <string name="reset_playtime_description">Reset the current game\'s playtime back to 0 seconds</string>
+    <string name="reset_playtime_warning_description">This will clear the current game\'s playtime data. Are you sure?</string>
+    <string name="playtime_reset_successfully">Playtime has been reset</string>
+    <string name="edit_playtime">Edit Playtime</string>
+    <string name="hours">Hours</string>
+    <string name="minutes">Minutes</string>
+    <string name="hours_must_be_between_0_and_9999">Hours must be between 0 and 9999</string>
+    <string name="minutes_must_be_between_0_and_59">Minutes must be between 0 and 59</string>
+    <string name="seconds_must_be_between_0_and_59">Seconds must be between 0 and 59</string>
+    <string name="playtime_updated_successfully">Playtime updated successfully</string>
     <string name="clear_shader_cache">Clear shader cache</string>
     <string name="clear_shader_cache_description">Removes all shaders built while playing this game</string>
     <string name="clear_shader_cache_warning_description">You will experience more stuttering as the shader cache regenerates</string>