wechat_qrcode refactoring

src/OpenCvSharp/Internal/Vectors/VectorOfString.cs

@@ -52,13 +52,13 @@ public int Size
         /// Converts std::vector to managed array
         /// </summary>
         /// <returns></returns>
-        public string?[] ToArray()
+        public string[] ToArray()
         {
             var size = Size;
             if (size == 0)
                 return Array.Empty<string>();
 
-            var ret = new string?[size];
+            var ret = new string[size];
             var cStringPointers = new IntPtr[size];
             var stringLengths = new int[size];
 

src/OpenCvSharp/Modules/aruco/DetectorParameters.cs

@@ -301,6 +301,7 @@ public bool DetectInvertedMarker
             set => Native.detectInvertedMarker = Convert.ToInt32(value);
         }
 
+#pragma warning disable CA1034
 #pragma warning disable CA1051
 #pragma warning disable 1591
         [StructLayout(LayoutKind.Sequential)]

src/OpenCvSharp/Modules/core/Mat/Mat.cs

@@ -2994,6 +2994,7 @@ public UnsafeIndexer<T> GetUnsafeGenericIndexer<T>() where T : unmanaged
             return new UnsafeIndexer<T>(this);
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// Mat Indexer
         /// </summary>
@@ -3100,6 +3101,7 @@ public override T this[params int[] idx]
             }
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// Mat Indexer
         /// </summary>

src/OpenCvSharp/Modules/core/SparseMat.cs

@@ -734,6 +734,7 @@ public T Value<T>(int[] idx, long? hashVal = null)
 
         #region Element Indexer
 
+#pragma warning disable CA1034
         /// <summary>
         /// Mat Indexer
         /// </summary>

src/OpenCvSharp/Modules/face/Facemark/FacemarkAAM.cs

@@ -53,6 +53,7 @@ public static FacemarkAAM Create(Params? parameters = null)
             return detector;
         }
 
+#pragma warning disable CA1034
         /// <inheritdoc />
         /// <summary>
         /// </summary>

src/OpenCvSharp/Modules/face/Facemark/FacemarkLBF.cs

@@ -53,6 +53,7 @@ public static FacemarkLBF Create(Params? parameters = null)
             return detector;
         }
 
+#pragma warning disable CA1034
         /// <inheritdoc />
         /// <summary>
         /// </summary>

src/OpenCvSharp/Modules/features2d/SimpleBlobDetector.cs

@@ -12,6 +12,7 @@ public class SimpleBlobDetector : Feature2D
     {
         private Ptr? ptrObj;
 
+#pragma warning disable CA1034
         /// <summary>
         /// SimpleBlobDetector parameters
         /// </summary>

src/OpenCvSharp/Modules/imgproc/ConnectedComponent.cs

@@ -193,6 +193,7 @@ private Mat GetLabelMask(int label)
             }
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// One blob
         /// </summary>

src/OpenCvSharp/Modules/imgproc/LineIterator.cs

@@ -244,6 +244,7 @@ public int PlusStep
 
         #endregion
 
+#pragma warning disable CA1034
         /// <summary>
         /// LineIterator pixel data
         /// </summary>

src/OpenCvSharp/Modules/imgproc/Moments.cs

@@ -253,6 +253,7 @@ public double[] HuMoments()
 
         #endregion
 
+#pragma warning disable CA1034
 #pragma warning disable 1591
         [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
         [SuppressMessage("Microsoft.Design", "CA1815: Override equals and operator equals on value types")]

src/OpenCvSharp/Modules/ml/DTrees.cs

@@ -355,6 +355,7 @@ public int[] GetSubsets()
 
         #region Types
 
+#pragma warning disable CA1034
 #pragma warning disable CA1051
         /// <summary>
         /// The class represents a decision tree node.
@@ -401,6 +402,7 @@ public struct Node
             public int Split;
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// The class represents split in a decision tree.
         /// </summary>

src/OpenCvSharp/Modules/tracking/TrackerCSRT.cs

@@ -85,6 +85,7 @@ protected override void DisposeUnmanaged()
             }
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// CSRT Params
         /// </summary>

src/OpenCvSharp/Modules/tracking/TrackerKCF.cs

@@ -68,6 +68,7 @@ protected override void DisposeUnmanaged()
             }
         }
 
+#pragma warning disable CA1034
 #pragma warning disable CA1051
         /// <summary> 
         /// </summary>

src/OpenCvSharp/Modules/video/TrackerGOTURN.cs

@@ -83,6 +83,7 @@ protected override void DisposeUnmanaged()
             }
         }
 
+#pragma warning disable CA1034
         /// <summary>
         /// 
         /// </summary>

src/OpenCvSharp/Modules/video/TrackerMIL.cs

@@ -70,6 +70,7 @@ protected override void DisposeUnmanaged()
             }
         }
 
+#pragma warning disable CA1034
 #pragma warning disable CA1051
         /// <summary> 
         /// </summary>

src/OpenCvSharp/Modules/wechat_qrcode/WeChatQRCode.cs

@@ -0,0 +1,112 @@
+using OpenCvSharp.Internal;
+using OpenCvSharp.Internal.Vectors;
+using System;
+
+namespace OpenCvSharp
+{
+    /// <summary>
+    /// WeChat QRCode includes two CNN-based models:
+    /// A object detection model and a super resolution model.
+    /// Object detection model is applied to detect QRCode with the bounding box.
+    /// super resolution model is applied to zoom in QRCode when it is small.
+    /// </summary>
+    public class WeChatQRCode : DisposableCvObject
+    {
+        private Ptr? objectPtr;
+
+        internal WeChatQRCode(IntPtr ptr)
+        {
+            objectPtr = new Ptr(ptr);
+            this.ptr = objectPtr.Get();
+        }
+
+        /// <summary>
+        /// Initialize the WeChatQRCode.
+        /// It includes two models, which are packaged with caffe format.
+        /// Therefore, there are prototxt and caffe models (In total, four paramenters).
+        /// </summary>
+        /// <param name="detectorPrototxtPath">prototxt file path for the detector</param>
+        /// <param name="detectorCaffeModelPath">caffe model file path for the detector</param>
+        /// <param name="superResolutionPrototxtPath">prototxt file path for the super resolution model</param>
+        /// <param name="superResolutionCaffeModelPath">caffe file path for the super resolution model</param>
+        /// <returns></returns>
+        /// <exception cref="ArgumentException"></exception>
+        public static WeChatQRCode Create(
+            string detectorPrototxtPath,
+            string detectorCaffeModelPath,
+            string superResolutionPrototxtPath,
+            string superResolutionCaffeModelPath)
+        {
+            if (string.IsNullOrWhiteSpace(detectorPrototxtPath))
+                throw new ArgumentException("empty string", nameof(detectorPrototxtPath));
+            if (string.IsNullOrWhiteSpace(detectorCaffeModelPath))
+                throw new ArgumentException("empty string", nameof(detectorCaffeModelPath));
+            if (string.IsNullOrWhiteSpace(superResolutionPrototxtPath))
+                throw new ArgumentException("empty string", nameof(superResolutionPrototxtPath));
+            if (string.IsNullOrWhiteSpace(superResolutionCaffeModelPath))
+                throw new ArgumentException("empty string", nameof(superResolutionCaffeModelPath));
+
+            NativeMethods.HandleException(
+                NativeMethods.wechat_qrcode_create1(
+                   detectorPrototxtPath, detectorCaffeModelPath, superResolutionPrototxtPath, superResolutionCaffeModelPath,
+                   out var ptr));
+
+            return new WeChatQRCode(ptr);
+        }
+
+        /// <summary>
+        /// Both detects and decodes QR code.
+        /// To simplify the usage, there is a only API: detectAndDecode
+        /// </summary>
+        /// <param name="inputImage">supports grayscale or color(BGR) image.</param>
+        /// <param name="bbox">optional output array of vertices of the found QR code quadrangle.Will be empty if not found.</param>
+        /// <param name="results">list of decoded string.</param>
+        public void DetectAndDecode(InputArray inputImage, out Mat[] bbox, out string[] results)
+        {
+            if (inputImage == null)
+                throw new ArgumentNullException(nameof(inputImage));
+            inputImage.ThrowIfDisposed();
+
+            using var bboxVec = new VectorOfMat();
+            using var texts = new VectorOfString();
+            NativeMethods.HandleException(
+                NativeMethods.wechat_qrcode_WeChatQRCode_detectAndDecode(
+                    ptr, inputImage.CvPtr, bboxVec.CvPtr, texts.CvPtr));
+
+            bbox = bboxVec.ToArray();
+            results = texts.ToArray();
+            GC.KeepAlive(this);
+            GC.KeepAlive(inputImage);
+        }
+
+        /// <inheritdoc />
+        protected override void DisposeManaged()
+        {
+            objectPtr?.Dispose();
+            objectPtr = null;
+            base.DisposeManaged();
+        }
+
+        internal class Ptr : OpenCvSharp.Ptr
+        {
+            public Ptr(IntPtr ptr) : base(ptr)
+            {
+            }
+
+            public override IntPtr Get()
+            {
+                NativeMethods.HandleException(
+                    NativeMethods.wechat_qrcode_Ptr_WeChatQRCode_get(ptr, out var ret));
+                GC.KeepAlive(this);
+                return ret;
+            }
+
+            protected override void DisposeUnmanaged()
+            {
+                NativeMethods.HandleException(
+                    NativeMethods.wechat_qrcode_Ptr_delete(ptr));
+                base.DisposeUnmanaged();
+            }
+        }
+    }
+}

test/OpenCvSharp.Tests.Windows/OpenCvSharp.Tests.Windows.csproj

@@ -31,14 +31,14 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
     <PackageReference Include="System.Memory" Version="4.5.4" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Xunit.StaFact" Version="1.0.37" />
+    <PackageReference Include="Xunit.StaFact" Version="1.1.11" />
   </ItemGroup>
 
   <ItemGroup>

test/OpenCvSharp.Tests/OpenCvSharp.Tests.csproj

@@ -36,15 +36,15 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
     <PackageReference Include="SharpZipLib" Version="1.3.3" />
     <PackageReference Include="System.Memory" Version="4.5.4" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Xunit.StaFact" Version="1.0.37" />
+    <PackageReference Include="Xunit.StaFact" Version="1.1.11" />
   </ItemGroup>
 
   <ItemGroup>