[MachineLearning.Inference] Fix the bug for double type of GetValue<T> (#1995)

This patch fixes the bug for double type of GetValue<T> method.

Signed-off-by: Sangjung Woo <sangjung.woo@samsung.com>

diff --git a/src/Tizen.MachineLearning.Inference/Tizen.MachineLearning.Inference/Pipeline.cs b/src/Tizen.MachineLearning.Inference/Tizen.MachineLearning.Inference/Pipeline.cs
index ea9e8f9..d6abcae 100755 (executable)
--- a/src/Tizen.MachineLearning.Inference/Tizen.MachineLearning.Inference/Pipeline.cs
+++ b/src/Tizen.MachineLearning.Inference/Tizen.MachineLearning.Inference/Pipeline.cs
@@ -868,6 +868,13 @@ namespace Tizen.MachineLearning.Inference
 
                     return (T)Convert.ChangeType(value, typeof(T));
                 }
+                else if (typeof(double).IsAssignableFrom(typeof(T)))
+                {
+                    ret = Interop.Pipeline.GetPropertyDouble(Handle, propertyName, out double value);
+                    NNStreamer.CheckException(ret, string.Format("Failed to get {0} property.", propertyName));
+
+                    return (T)Convert.ChangeType(value, typeof(T));
+                }
 
                 throw new ArgumentException("The Input data type is not valid.");
             }