Helper methods to determine if speech is active and supported

Author: Alex Cooper (ANALOG)

Assets/MixedRealityToolkit/_Core/Definitions/InputSystem/MixedRealityInputSystemProfile.cs

@@ -1,6 +1,8 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License. See LICENSE in the project root for license information.
 
+using System.Globalization;
+using System.Collections.Generic;
 using Microsoft.MixedReality.Toolkit.Core.Definitions.Devices;
 using Microsoft.MixedReality.Toolkit.Core.Definitions.Utilities;
 using Microsoft.MixedReality.Toolkit.Core.Interfaces.Devices;
@@ -74,6 +76,24 @@ public MixedRealityPointerProfile PointerProfile
         /// </summary>
         public IMixedRealitySpeechSystem SpeechSystem => speechSystem ?? (speechSystem = MixedRealityToolkit.Instance.GetService<IMixedRealitySpeechSystem>());
 
+
+        /// <summary>
+        /// The list of cultures where speech recognition is supported.  Cultures added as needed
+        /// </summary>
+        private List<CultureInfo> supportedVoiceCultures = new List<CultureInfo>
+        {
+            new CultureInfo("en-US")
+        };
+
+        /// <summary>
+        /// REturns whether speech is supported for the current language/culture or not
+        /// </summary>
+        public bool IsSpeechSupported
+        {
+            // Use UI Culture instead of just culture since that will match the current display lang/culture
+            get { return supportedVoiceCultures.Contains(CultureInfo.CurrentUICulture); }
+        }
+
         /// <summary>
         /// Is the speech Commands Enabled?
         /// </summary>

Assets/MixedRealityToolkit/_Core/Devices/VoiceInput/WindowsSpeechInputDeviceManager.cs

@@ -30,9 +30,16 @@ public WindowsSpeechInputDeviceManager(string name, uint priority) : base(name,
         /// </summary>
         public IMixedRealityInputSource InputSource = null;
 
-
         private KeywordRecognizer keywordRecognizer;
 
+        /// <summary>
+        /// Query whether or not the speech system is active
+        /// </summary>
+        public bool IsRecognitionActive
+        {
+            get { return keywordRecognizer != null && keywordRecognizer.IsRunning; }
+        }
+
         public RecognitionConfidenceLevel RecognitionConfidenceLevel { get; set; }
 
         /// <inheritdoc />
@@ -127,4 +134,4 @@ private void OnPhraseRecognized(ConfidenceLevel confidence, TimeSpan phraseDurat
         }
     }
 #endif // UNITY_STANDALONE_WIN || UNITY_WSA || UNITY_EDITOR_WIN
-}
+}

Assets/MixedRealityToolkit/_Core/Interfaces/Devices/IMixedRealitySpeechSystem.cs

@@ -8,6 +8,11 @@ namespace Microsoft.MixedReality.Toolkit.Core.Interfaces.Devices
     /// </summary>
     public interface IMixedRealitySpeechSystem : IMixedRealityDeviceManager, IMixedRealityExtensionService
     {
+        /// <summary>
+        /// Query whether or not the speech system is active
+        /// </summary>
+        bool IsRecognitionActive { get; }
+
         /// <summary>
         /// Make sure the keyword recognizer is on, then stop it.
         /// Otherwise, leave it alone because it's already in the desired state.
@@ -20,4 +25,4 @@ public interface IMixedRealitySpeechSystem : IMixedRealityDeviceManager, IMixedR
         /// </summary>
         void StopRecognition();
     }
-}
+}