Extract interface from Channel class #2

CarefulAudioRepair/Data/Channel.cs

@@ -13,7 +13,7 @@ namespace CarefulAudioRepair.Data
     /// <summary>
     /// Represents audio samples for one channel.
     /// </summary>
-    internal class Channel : IDisposable
+    internal class Channel : IDisposable, IChannel
     {
         private ScannerTools scannerTools;
 

CarefulAudioRepair/Data/IChannel.cs

@@ -0,0 +1,24 @@
+// <copyright file="Channel.cs" company="Dmitrii Khrustalev">
+// Copyright (c) Dmitrii Khrustalev. All rights reserved.
+// </copyright>
+
+using System;
+using System.Threading.Tasks;
+
+namespace CarefulAudioRepair.Data
+{
+    internal interface IChannel
+    {
+        bool IsPreprocessed { get; }
+        int LengthSamples { get; }
+        int NumberOfPatches { get; }
+
+        void Dispose();
+        Patch[] GetAllPatches();
+        double[] GetInputRange(int start, int length);
+        double GetInputSample(int position);
+        double GetOutputSample(int position);
+        double GetPredictionErr(int position);
+        Task ScanAsync(IProgress<string> status, IProgress<double> progress);
+    }
+}