bug fix nullptr uninitialize

Author: Dogancan Ozturk

Examples/CrossPlatformTest/CrossPlatformTest.csproj

@@ -23,7 +23,7 @@
     </Content>
     <Content Include="openh264-2.4.1-win64.dll">
       <PackagePath>\lib\$(TargetFramework)</PackagePath>
-      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
       <Pack>true</Pack> 
     </Content>
   </ItemGroup>

Examples/CrossPlatformTest/H264SharpNative-win64.dll

@@ -56,15 +56,15 @@ private void LoadDecoder(string ciscoDllPath)
                     // Success
                     break;
                 case 1:
-                    throw new DllNotFoundException($"Failed to load the decoder library: {ciscoDllPath}");
+                    throw new DllNotFoundException($"Failed to load the cisco library: {ciscoDllPath}");
                 case 2:
                     throw new EntryPointNotFoundException("Failed to load WelsCreateDecoder function");
                 case 3:
                     throw new EntryPointNotFoundException("Failed to load WelsDestroyDecoder function");
                 case 4:
                     throw new InvalidOperationException("Failed to create decoder instance");
                 default:
-                    throw new Exception($"Unknown error occurred while loading decoder: {result}");
+                    throw new Exception($"Unknown error occurred code: {result}");
             }
         }
 

H264Sharp/H264Decoder.cs

@@ -51,15 +51,15 @@ private void LoadEncoder(string ciscoDllPath)
                     // Success
                     break;
                 case 1:
-                    throw new DllNotFoundException($"Failed to load the encoder library: {ciscoDllPath}");
+                    throw new DllNotFoundException($"Failed to load the cisco library: {ciscoDllPath}");
                 case 2:
                     throw new EntryPointNotFoundException("Failed to load WelsCreateSVCEncoder function");
                 case 3:
                     throw new EntryPointNotFoundException("Failed to load WelsDestroySVCEncoder function");
                 case 4:
                     throw new InvalidOperationException("Failed to create encoder instance");
                 default:
-                    throw new Exception($"Unknown error occurred while loading encoder: {result}");
+                    throw new Exception($"Unknown error occurred code: {result}");
             }
         }
 

H264Sharp/H264Encoder.cs

@@ -339,8 +339,13 @@ namespace H264Sharp {
 	Decoder::~Decoder()
 	{
 		FreeAllignAlloc(innerBuffer);
-		decoder->Uninitialize();
-		DestroyDecoderFunc(decoder);
+
+		if(decoder !=nullptr)
+		{
+			decoder->Uninitialize();
+			DestroyDecoderFunc(decoder);
+		}
+		
 
 		if (libraryHandle != nullptr) {
 #ifdef _WIN32

H264SharpNative/Decoder.cpp

@@ -693,8 +693,12 @@ namespace H264Sharp {
 
 	Encoder::~Encoder()
 	{
-		encoder->Uninitialize();
-		DestroyEncoderFunc(encoder);
+		if (encoder != nullptr) 
+		{
+			encoder->Uninitialize();
+			DestroyEncoderFunc(encoder);
+		}
+	
 
 		FreeAllignAlloc(innerBuffer);
 		for (auto& it : efm)