vault backup: 2024-10-12 17:19:45

2024-10-12 17:19:46 +08:00
parent ff94ddca61
commit 244c0c52f6
960 changed files with 31348 additions and 10 deletions
--- a/03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/Sequencer/CommandLineID/CommandLineID.md
+++ b/03-UnrealEngine/Gameplay/UObject/UnrealSpecifiers/Meta/Sequencer/CommandLineID/CommandLineID.md
@@ -0,0 +1,47 @@
+# CommandLineID
+
+- **功能描述：** 标记UMovieSceneCaptureProtocolBase的子类的协议类型。
+- **使用位置：** UCLASS
+- **引擎模块：** Sequencer
+- **元数据类型：** string="abc"
+- **限制类型：** UMovieSceneCaptureProtocolBase的子类上
+- **常用程度：** ★★
+
+标记UMovieSceneCaptureProtocolBase的子类的协议类型。
+
+用来在Sequcencer渲染导出的时候选择到正确的处理类。一般也就引擎内部使用，除非想自己自定义渲染输出的格式协议类。
+
+## 测试效果：
+
+![Untitled](Untitled.png)
+
+## 原理：
+
+简单来说就是通过选择的格式名字来找到相关的ProtocolType Class
+
+```cpp
+void UMovieSceneCapture::Initialize(TSharedPtr<FSceneViewport> InSceneViewport, int32 PIEInstance)
+{
+			FString ImageProtocolOverrideString;
+			if (   FParse::Value( FCommandLine::Get(), TEXT( "-MovieFormat=" ), ImageProtocolOverrideString )
+			|| FParse::Value( FCommandLine::Get(), TEXT( "-ImageCaptureProtocol=" ), ImageProtocolOverrideString ) )
+			{
+				static const TCHAR* const CommandLineIDString = TEXT("CommandLineID");
+				TArray<UClass*> AllProtocolTypes = FindAllCaptureProtocolClasses();
+				for (UClass* Class : AllProtocolTypes)
+				{
+					bool bMetaDataMatch = Class->GetMetaData(CommandLineIDString) == ImageProtocolOverrideString;
+					if ( bMetaDataMatch || Class->GetName() == ImageProtocolOverrideString )
+					{
+						OverrideClass = Class;
+					}
+				}
+				ImageCaptureProtocolType = OverrideClass;		
+			}
+			
+		if (FParse::Value( FCommandLine::Get(), TEXT( "-AudioCaptureProtocol=" ), AudioProtocolOverrideString ) )
+		{
+			static const TCHAR* const CommandLineIDString = TEXT("CommandLineID");
+		}
+	}
+```