android: Rework config lifecycle

Exposes options for initializing, unloading, reloading, and saving settings that let us update the config much more granularly based on what's happening in the UI.

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

@@ -230,8 +230,6 @@ object NativeLibrary {
      */
     external fun onTouchReleased(finger_id: Int)
 
-    external fun reloadSettings()
-
     external fun initGameIni(gameID: String?)
 
     external fun setAppDirectory(directory: String)

src/android/app/src/main/java/org/yuzu/yuzu_emu/features/settings/model/Settings.kt

@@ -7,7 +7,7 @@ import android.text.TextUtils
 import android.widget.Toast
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.YuzuApplication
-import org.yuzu.yuzu_emu.features.settings.utils.SettingsFile
+import org.yuzu.yuzu_emu.utils.NativeConfig
 
 object Settings {
     private val context get() = YuzuApplication.appContext
@@ -19,7 +19,7 @@ object Settings {
                 context.getString(R.string.ini_saved),
                 Toast.LENGTH_SHORT
             ).show()
-            SettingsFile.saveFile(SettingsFile.FILE_NAME_CONFIG)
+            NativeConfig.saveSettings()
         } else {
             // TODO: Save custom game settings
             Toast.makeText(

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

@@ -21,7 +21,6 @@ import androidx.navigation.navArgs
 import com.google.android.material.color.MaterialColors
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.launch
-import org.yuzu.yuzu_emu.NativeLibrary
 import java.io.IOException
 import org.yuzu.yuzu_emu.R
 import org.yuzu.yuzu_emu.databinding.ActivitySettingsBinding
@@ -165,11 +164,12 @@ class SettingsActivity : AppCompatActivity() {
         settingsViewModel.shouldSave = false
 
         // Delete settings file because the user may have changed values that do not exist in the UI
+        NativeConfig.unloadConfig()
         val settingsFile = SettingsFile.getSettingsFile(SettingsFile.FILE_NAME_CONFIG)
         if (!settingsFile.delete()) {
             throw IOException("Failed to delete $settingsFile")
         }
-        NativeLibrary.reloadSettings()
+        NativeConfig.initializeConfig()
 
         Toast.makeText(
             applicationContext,

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

@@ -625,6 +625,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
                 }
 
                 // Clear existing user data
+                NativeConfig.unloadConfig()
                 File(DirectoryInitialization.userDirectory!!).deleteRecursively()
 
                 // Copy archive to internal storage
@@ -643,6 +644,7 @@ class MainActivity : AppCompatActivity(), ThemeProvider {
 
                 // Reinitialize relevant data
                 NativeLibrary.initializeSystem(true)
+                NativeConfig.initializeConfig()
                 gamesViewModel.reloadGames(false)
 
                 return@newInstance getString(R.string.user_data_import_success)

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

@@ -16,6 +16,7 @@ object DirectoryInitialization {
         if (!areDirectoriesReady) {
             initializeInternalStorage()
             NativeLibrary.initializeSystem(false)
+            NativeConfig.initializeConfig()
             areDirectoriesReady = true
         }
     }

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

@@ -4,6 +4,30 @@
 package org.yuzu.yuzu_emu.utils
 
 object NativeConfig {
+    /**
+     * Creates a Config object and opens the emulation config.
+     */
+    @Synchronized
+    external fun initializeConfig()
+
+    /**
+     * Destroys the stored config object. This automatically saves the existing config.
+     */
+    @Synchronized
+    external fun unloadConfig()
+
+    /**
+     * Reads values saved to the config file and saves them.
+     */
+    @Synchronized
+    external fun reloadSettings()
+
+    /**
+     * Saves settings values in memory to disk.
+     */
+    @Synchronized
+    external fun saveSettings()
+
     external fun getBoolean(key: String, getDefault: Boolean): Boolean
     external fun setBoolean(key: String, value: Boolean)