android: Remove LocalBroadcastManager

This causes a couple of minor changes to directory initialization. We don't have a lengthy initialization step so we could spend less time creating state receivers and just run initialization on the main thread. We also don't have a situation where external storage will be a concern so checks are removed in favor of a binary check to see if initialization is ready.

This additionally removes the unused DoFrame callback.

src/android/app/build.gradle

@@ -142,7 +142,6 @@ dependencies {
     implementation 'androidx.window:window:1.0.0'
     implementation 'org.ini4j:ini4j:0.5.4'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.localbroadcastmanager:localbroadcastmanager:1.1.0'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
 }
 

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

@@ -218,8 +218,6 @@ public final class NativeLibrary {
 
     public static native void SurfaceDestroyed();
 
-    public static native void DoFrame();
-
     /**
      * Unpauses emulation from a paused state.
      */

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsActivity.kt

@@ -5,31 +5,25 @@ package org.yuzu.yuzu_emu.features.settings.ui
 
 import android.content.Context
 import android.content.Intent
-import android.content.IntentFilter
 import android.os.Bundle
 import android.view.Menu
 import android.view.View
 import android.widget.Toast
 import androidx.activity.viewModels
-import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.core.view.updatePadding
-import androidx.localbroadcastmanager.content.LocalBroadcastManager
-import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.databinding.ActivitySettingsBinding
-import org.yuzu.yuzu_emu.databinding.DialogProgressBarBinding
 import org.yuzu.yuzu_emu.features.settings.model.Settings
 import org.yuzu.yuzu_emu.features.settings.model.SettingsViewModel
 import org.yuzu.yuzu_emu.utils.*
 
 class SettingsActivity : AppCompatActivity(), SettingsActivityView {
     private val presenter = SettingsActivityPresenter(this)
-    private var dialog: AlertDialog? = null
 
     private lateinit var binding: ActivitySettingsBinding
 
@@ -134,47 +128,6 @@ class SettingsActivity : AppCompatActivity(), SettingsActivityView {
         return duration != 0f && transition != 0f
     }
 
-    override fun startDirectoryInitializationService(
-        receiver: DirectoryStateReceiver?,
-        filter: IntentFilter
-    ) {
-        LocalBroadcastManager.getInstance(this).registerReceiver(
-            receiver!!,
-            filter
-        )
-        DirectoryInitialization.start(this)
-    }
-
-    override fun stopListeningToDirectoryInitializationService(receiver: DirectoryStateReceiver) {
-        LocalBroadcastManager.getInstance(this).unregisterReceiver(receiver)
-    }
-
-    override fun showLoading() {
-        if (dialog == null) {
-            val loadingBinding = DialogProgressBarBinding.inflate(layoutInflater)
-            loadingBinding.progressBar.isIndeterminate = true
-
-            dialog = MaterialAlertDialogBuilder(this)
-                .setTitle(R.string.load_settings)
-                .setView(loadingBinding.root)
-                .setCancelable(false)
-                .create()
-        }
-        dialog!!.show()
-    }
-
-    override fun hideLoading() {
-        dialog!!.dismiss()
-    }
-
-    override fun showExternalStorageNotMountedHint() {
-        Toast.makeText(
-            this,
-            R.string.external_storage_not_mounted,
-            Toast.LENGTH_SHORT
-        ).show()
-    }
-
     override fun onSettingsFileLoaded() {
         val fragment: SettingsFragmentView? = settingsFragment
         fragment?.loadSettingsList()

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsActivityPresenter.kt

@@ -3,15 +3,13 @@
 
 package org.yuzu.yuzu_emu.features.settings.ui
 
-import android.content.IntentFilter
+import android.content.Context
 import android.os.Bundle
 import android.text.TextUtils
 import org.yuzu.yuzu_emu.NativeLibrary
 import org.yuzu.yuzu_emu.features.settings.model.Settings
 import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
 import org.yuzu.yuzu_emu.utils.DirectoryInitialization
-import org.yuzu.yuzu_emu.utils.DirectoryInitialization.DirectoryInitializationState
-import org.yuzu.yuzu_emu.utils.DirectoryStateReceiver
 import org.yuzu.yuzu_emu.utils.Log
 import java.io.File
 
@@ -19,7 +17,6 @@ class SettingsActivityPresenter(private val activityView: SettingsActivityView)
     val settings: Settings get() = activityView.settings
 
     private var shouldSave = false
-    private var directoryStateReceiver: DirectoryStateReceiver? = null
     private lateinit var menuTag: String
     private lateinit var gameId: String
 
@@ -54,33 +51,14 @@ class SettingsActivityPresenter(private val activityView: SettingsActivityView)
             Log.error(DirectoryInitialization.userDirectory + "/config/" + SettingsFile.FILE_NAME_CONFIG + ".ini")
             Log.error("yuzu config file could not be found!")
         }
-        if (DirectoryInitialization.areDirectoriesReady()) {
-            loadSettingsUI()
-        } else {
-            activityView.showLoading()
-            val statusIntentFilter = IntentFilter(DirectoryInitialization.BROADCAST_ACTION)
-            directoryStateReceiver =
-                DirectoryStateReceiver { directoryInitializationState: DirectoryInitializationState ->
-                    if (directoryInitializationState == DirectoryInitializationState.YUZU_DIRECTORIES_INITIALIZED) {
-                        activityView.hideLoading()
-                        loadSettingsUI()
-                    } else if (directoryInitializationState == DirectoryInitializationState.CANT_FIND_EXTERNAL_STORAGE) {
-                        activityView.showExternalStorageNotMountedHint()
-                        activityView.hideLoading()
-                    }
-                }
-            activityView.startDirectoryInitializationService(
-                directoryStateReceiver,
-                statusIntentFilter
-            )
+
+        if (!DirectoryInitialization.areDirectoriesReady) {
+            DirectoryInitialization.start(activityView as Context)
         }
+        loadSettingsUI()
     }
 
     fun onStop(finishing: Boolean) {
-        if (directoryStateReceiver != null) {
-            activityView.stopListeningToDirectoryInitializationService(directoryStateReceiver!!)
-            directoryStateReceiver = null
-        }
         if (finishing && shouldSave) {
             Log.debug("[SettingsActivity] Settings activity stopping. Saving settings to INI...")
             settings.saveSettings(activityView)

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/ui/SettingsActivityView.kt

@@ -3,9 +3,7 @@
 
 package org.yuzu.yuzu_emu.features.settings.ui
 
-import android.content.IntentFilter
 import org.yuzu.yuzu_emu.features.settings.model.Settings
-import org.yuzu.yuzu_emu.utils.DirectoryStateReceiver
 
 /**
  * Abstraction for the Activity that manages SettingsFragments.
@@ -56,37 +54,4 @@ interface SettingsActivityView {
      * unless this has been called, the Activity will not save to disk.
      */
     fun onSettingChanged()
-
-    /**
-     * Show loading dialog while loading the settings
-     */
-    fun showLoading()
-
-    /**
-     * Hide the loading the dialog
-     */
-    fun hideLoading()
-
-    /**
-     * Show a hint to the user that the app needs the external storage to be mounted
-     */
-    fun showExternalStorageNotMountedHint()
-
-    /**
-     * Start the DirectoryInitialization and listen for the result.
-     *
-     * @param receiver the broadcast receiver for the DirectoryInitialization
-     * @param filter   the Intent broadcasts to be received.
-     */
-    fun startDirectoryInitializationService(
-        receiver: DirectoryStateReceiver?,
-        filter: IntentFilter
-    )
-
-    /**
-     * Stop listening to the DirectoryInitialization.
-     *
-     * @param receiver The broadcast receiver to unregister.
-     */
-    fun stopListeningToDirectoryInitializationService(receiver: DirectoryStateReceiver)
 }

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

@@ -4,14 +4,13 @@
 package org.yuzu.yuzu_emu.fragments
 
 import android.content.Context
-import android.content.IntentFilter
 import android.content.SharedPreferences
 import android.graphics.Color
 import android.os.Bundle
 import android.os.Handler
+import android.os.Looper
 import android.view.*
 import android.widget.TextView
-import android.widget.Toast
 import androidx.activity.OnBackPressedCallback
 import androidx.appcompat.widget.PopupMenu
 import androidx.core.content.res.ResourcesCompat
@@ -19,7 +18,6 @@ import androidx.core.graphics.Insets
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
 import androidx.fragment.app.Fragment
-import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import androidx.preference.PreferenceManager
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import org.yuzu.yuzu_emu.NativeLibrary
@@ -32,13 +30,11 @@ import org.yuzu.yuzu_emu.features.settings.ui.SettingsActivity
 import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
 import org.yuzu.yuzu_emu.model.Game
 import org.yuzu.yuzu_emu.utils.*
-import org.yuzu.yuzu_emu.utils.DirectoryInitialization.DirectoryInitializationState
 import org.yuzu.yuzu_emu.utils.SerializableHelper.parcelable
 
-class EmulationFragment : Fragment(), SurfaceHolder.Callback, Choreographer.FrameCallback {
+class EmulationFragment : Fragment(), SurfaceHolder.Callback {
     private lateinit var preferences: SharedPreferences
     private lateinit var emulationState: EmulationState
-    private var directoryStateReceiver: DirectoryStateReceiver? = null
     private var emulationActivity: EmulationActivity? = null
     private var perfStatsUpdater: (() -> Unit)? = null
 
@@ -144,25 +140,16 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback, Choreographer.Fram
 
     override fun onResume() {
         super.onResume()
-        Choreographer.getInstance().postFrameCallback(this)
-        if (DirectoryInitialization.areDirectoriesReady()) {
-            emulationState.run(emulationActivity!!.isActivityRecreated)
-        } else {
-            setupDirectoriesThenStartEmulation()
+        if (!DirectoryInitialization.areDirectoriesReady) {
+            DirectoryInitialization.start(requireContext())
         }
+        emulationState.run(emulationActivity!!.isActivityRecreated)
     }
 
     override fun onPause() {
-        if (directoryStateReceiver != null) {
-            LocalBroadcastManager.getInstance(requireActivity()).unregisterReceiver(
-                directoryStateReceiver!!
-            )
-            directoryStateReceiver = null
-        }
         if (emulationState.isRunning) {
             emulationState.pause()
         }
-        Choreographer.getInstance().removeFrameCallback(this)
         super.onPause()
     }
 
@@ -176,36 +163,6 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback, Choreographer.Fram
         super.onDetach()
     }
 
-    private fun setupDirectoriesThenStartEmulation() {
-        val statusIntentFilter = IntentFilter(
-            DirectoryInitialization.BROADCAST_ACTION
-        )
-        directoryStateReceiver =
-            DirectoryStateReceiver { directoryInitializationState: DirectoryInitializationState ->
-                if (directoryInitializationState ==
-                    DirectoryInitializationState.YUZU_DIRECTORIES_INITIALIZED
-                ) {
-                    emulationState.run(emulationActivity!!.isActivityRecreated)
-                } else if (directoryInitializationState ==
-                    DirectoryInitializationState.CANT_FIND_EXTERNAL_STORAGE
-                ) {
-                    Toast.makeText(
-                        context,
-                        R.string.external_storage_not_mounted,
-                        Toast.LENGTH_SHORT
-                    )
-                        .show()
-                }
-            }
-
-        // Registers the DirectoryStateReceiver and its intent filters
-        LocalBroadcastManager.getInstance(requireActivity()).registerReceiver(
-            directoryStateReceiver!!,
-            statusIntentFilter
-        )
-        DirectoryInitialization.start(requireContext())
-    }
-
     fun refreshInputOverlay() {
         binding.surfaceInputOverlay.refreshControls()
     }
@@ -259,11 +216,6 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback, Choreographer.Fram
         emulationState.clearSurface()
     }
 
-    override fun doFrame(frameTimeNanos: Long) {
-        Choreographer.getInstance().postFrameCallback(this)
-        NativeLibrary.DoFrame()
-    }
-
     private fun showOverlayOptions() {
         val anchor = binding.inGameMenu.findViewById<View>(R.id.menu_overlay_controls)
         val popup = PopupMenu(requireContext(), anchor)
@@ -474,7 +426,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback, Choreographer.Fram
     }
 
     companion object {
-        private val perfStatsUpdateHandler = Handler()
+        private val perfStatsUpdateHandler = Handler(Looper.myLooper()!!)
 
         fun newInstance(game: Game): EmulationFragment {
             val args = Bundle()

src/android/app/src/main/java/org/yuzu/yuzu_emu/ui/main/MainActivity.kt

@@ -41,7 +41,7 @@ class MainActivity : AppCompatActivity(), MainView {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         val splashScreen = installSplashScreen()
-        splashScreen.setKeepOnScreenCondition { !DirectoryInitialization.areDirectoriesReady() }
+        splashScreen.setKeepOnScreenCondition { !DirectoryInitialization.areDirectoriesReady }
 
         ThemeHelper.setTheme(this)
 

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/DirectoryInitialization.kt

@@ -4,46 +4,26 @@
 package org.yuzu.yuzu_emu.utils
 
 import android.content.Context
-import android.content.Intent
-import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import org.yuzu.yuzu_emu.NativeLibrary
 import java.io.IOException
-import java.util.concurrent.atomic.AtomicBoolean
 
 object DirectoryInitialization {
-    const val BROADCAST_ACTION = "org.yuzu.yuzu_emu.BROADCAST"
-    const val EXTRA_STATE = "directoryState"
-
-    @Volatile
-    private var directoryState: DirectoryInitializationState? = null
     private var userPath: String? = null
-    private val isDirectoryInitializationRunning = AtomicBoolean(false)
+
+    var areDirectoriesReady: Boolean = false
 
     @JvmStatic
     fun start(context: Context) {
-        // Can take a few seconds to run, so don't block UI thread.
-        Runnable { init(context) }.run()
-    }
-
-    private fun init(context: Context) {
-        if (!isDirectoryInitializationRunning.compareAndSet(false, true)) return
-        if (directoryState != DirectoryInitializationState.YUZU_DIRECTORIES_INITIALIZED) {
+        if (!areDirectoriesReady) {
             initializeInternalStorage(context)
             NativeLibrary.InitializeEmulation()
-            directoryState = DirectoryInitializationState.YUZU_DIRECTORIES_INITIALIZED
+            areDirectoriesReady = true
         }
-        isDirectoryInitializationRunning.set(false)
-        sendBroadcastState(directoryState, context)
-    }
-
-    fun areDirectoriesReady(): Boolean {
-        return directoryState == DirectoryInitializationState.YUZU_DIRECTORIES_INITIALIZED
     }
 
     val userDirectory: String?
         get() {
-            checkNotNull(directoryState) { "DirectoryInitialization has to run at least once!" }
-            check(!isDirectoryInitializationRunning.get()) { "DirectoryInitialization has to finish running first!" }
+            check(areDirectoriesReady) { "Directory initialization is not ready!" }
             return userPath
         }
 
@@ -55,15 +35,4 @@ object DirectoryInitialization {
             e.printStackTrace()
         }
     }
-
-    private fun sendBroadcastState(state: DirectoryInitializationState?, context: Context) {
-        val localIntent = Intent(BROADCAST_ACTION)
-            .putExtra(EXTRA_STATE, state)
-        LocalBroadcastManager.getInstance(context).sendBroadcast(localIntent)
-    }
-
-    enum class DirectoryInitializationState {
-        YUZU_DIRECTORIES_INITIALIZED,
-        CANT_FIND_EXTERNAL_STORAGE
-    }
 }

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/DirectoryStateReceiver.kt

@@ -1,18 +0,0 @@
-// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package org.yuzu.yuzu_emu.utils
-
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import org.yuzu.yuzu_emu.utils.DirectoryInitialization.DirectoryInitializationState
-
-class DirectoryStateReceiver(var callback: (DirectoryInitializationState) -> Unit) :
-    BroadcastReceiver() {
-    override fun onReceive(context: Context, intent: Intent) {
-        val state = intent
-            .getSerializableExtra(DirectoryInitialization.EXTRA_STATE) as DirectoryInitializationState
-        callback.invoke(state)
-    }
-}

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

@@ -367,8 +367,6 @@ void Java_org_yuzu_yuzu_1emu_NativeLibrary_SurfaceDestroyed(JNIEnv* env,
     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,

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

@@ -98,8 +98,6 @@
 
     <string name="load_settings">Loading Settings…</string>
 
-    <string name="external_storage_not_mounted">The external storage needs to be available in order to use yuzu</string>
-
     <string name="empty_gamelist">No files were found or no game directory has been selected yet.</string>
 
     <!-- Software keyboard -->