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Assets/Oculus/Voice/Scripts/Runtime/Utilities/MicPermissionsManager.cs

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+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * Licensed under the Oculus SDK License Agreement (the "License");
+ * you may not use the Oculus SDK except in compliance with the License,
+ * which is provided at the time of installation or download, or which
+ * otherwise accompanies this software in either electronic or hard copy form.
+ *
+ * You may obtain a copy of the License at
+ *
+ * https://developer.oculus.com/licenses/oculussdk/
+ *
+ * Unless required by applicable law or agreed to in writing, the Oculus SDK
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if UNITY_ANDROID && !UNITY_2020_2_OR_NEWER
+#define MISSING_ANDROID_PERMISSION_CALLBACK
+#endif
+
+using System;
+using System.Collections;
+using UnityEngine;
+#if UNITY_ANDROID
+using UnityEngine.Android;
+#endif
+#if MISSING_ANDROID_PERMISSION_CALLBACK
+using Meta.WitAi;
+#endif
+
+namespace Oculus.VoiceSDK.Utilities
+{
+    public static class MicPermissionsManager
+    {
+        public static bool HasMicPermission()
+        {
+#if UNITY_ANDROID
+            return Permission.HasUserAuthorizedPermission(Permission.Microphone);
+#else
+            return true;
+#endif
+        }
+
+        public static void RequestMicPermission(Action<string> permissionGrantedCallback = null)
+        {
+            #if UNITY_ANDROID
+            if (HasMicPermission())
+            {
+                permissionGrantedCallback?.Invoke(Permission.Microphone);
+                return;
+            }
+                #if MISSING_ANDROID_PERMISSION_CALLBACK
+                Permission.RequestUserPermission(Permission.Microphone);
+                CoroutineUtility.StartCoroutine(CheckPermissionGranted(permissionGrantedCallback));
+                #else
+                var callbacks = new PermissionCallbacks();
+                callbacks.PermissionGranted += s => permissionGrantedCallback?.Invoke(s);
+                Permission.RequestUserPermission(Permission.Microphone, callbacks);
+                #endif
+            #else
+            permissionGrantedCallback?.Invoke("android.permission.RECORD_AUDIO");
+
+            // Do nothing for now, but eventually we may want to handle IOS/whatever permissions here, too.
+            #endif
+        }
+
+        #if MISSING_ANDROID_PERMISSION_CALLBACK
+        private const int PERMISSION_CHECK_FRAMES = 3;
+        private static IEnumerator CheckPermissionGranted(Action<string> permissionGrantedCallback)
+        {
+            // Exit immediately
+            if (permissionGrantedCallback == null)
+            {
+                yield break;
+            }
+            // Wait specified amount of frames
+            for (int i = 0; i < PERMISSION_CHECK_FRAMES; i++)
+            {
+                yield return new WaitForEndOfFrame();
+            }
+            // Successful
+            if (HasMicPermission())
+            {
+                permissionGrantedCallback?.Invoke(Permission.Microphone);
+            }
+        }
+        #endif
+    }
+}