From 2386340f2a3bb0890cf900f187c20e42a1b03caf Mon Sep 17 00:00:00 2001
From: Dmitry Khrustalev <dmitrii.khrustalev@gmail.com>
Date: Mon, 31 Aug 2020 15:25:43 -0300
Subject: [PATCH] Extract interface from Channel class #2

---
 CarefulAudioRepair/Data/Channel.cs  |  2 +-
 CarefulAudioRepair/Data/IChannel.cs | 24 ++++++++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 CarefulAudioRepair/Data/IChannel.cs

diff --git a/CarefulAudioRepair/Data/Channel.cs b/CarefulAudioRepair/Data/Channel.cs
index d0bc981..85ae30e 100644
--- a/CarefulAudioRepair/Data/Channel.cs
+++ b/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;
 
diff --git a/CarefulAudioRepair/Data/IChannel.cs b/CarefulAudioRepair/Data/IChannel.cs
new file mode 100644
index 0000000..df6bbb3
--- /dev/null
+++ b/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);
+    }
+}
\ No newline at end of file