Wes xx mediapipe integration

Packages/com.github.homuler.mediapipe/Runtime/Scripts/External/SerializedProtoVector.cs

@@ -0,0 +1,44 @@
+// Copyright (c) 2021 homuler
+//
+// Use of this source code is governed by an MIT-style
+// license that can be found in the LICENSE file or at
+// https://opensource.org/licenses/MIT.
+
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+
+using pb = Google.Protobuf;
+
+namespace Mediapipe
+{
+  [StructLayout(LayoutKind.Sequential)]
+  internal readonly struct SerializedProtoVector
+  {
+    private readonly IntPtr _data;
+    private readonly int _size;
+
+    public void Dispose()
+    {
+      UnsafeNativeMethods.mp_api_SerializedProtoArray__delete(_data, _size);
+    }
+
+    public List<T> Deserialize<T>(pb::MessageParser<T> parser) where T : pb::IMessage<T>
+    {
+      var protos = new List<T>(_size);
+
+      unsafe
+      {
+        var protoPtr = (SerializedProto*)_data;
+
+        for (var i = 0; i < _size; i++)
+        {
+          var serializedProto = Marshal.PtrToStructure<SerializedProto>((IntPtr)protoPtr++);
+          protos.Add(serializedProto.Deserialize(parser));
+        }
+      }
+
+      return protos;
+    }
+  }
+}