Added ndi receiver and sdi outputs

Plugins/NDIIO/Source/Core/Public/Services/NDIConnectionService.h

@@ -0,0 +1,109 @@
+/*
+	Copyright (C) 2024 Vizrt NDI AB. All rights reserved.
+
+	This file and its use within a Product is bound by the terms of NDI SDK license that was provided
+	as part of the NDI SDK. For more information, please review the license and the NDI SDK documentation.
+*/
+
+#pragma once
+
+#include <CoreMinimal.h>
+#include <Engine/TextureRenderTarget2D.h>
+#include <AudioDevice.h>
+#include <Misc/EngineVersionComparison.h>
+#if (ENGINE_MAJOR_VERSION > 5) || ((ENGINE_MAJOR_VERSION == 5) && (ENGINE_MINOR_VERSION >= 3))	// 5.3 or later
+#include <ISubmixBufferListener.h>
+#endif
+#include <Widgets/SWindow.h>
+
+DECLARE_EVENT_OneParam(FNDICoreDelegates, FNDIConnectionServiceSendVideoEvent, int64)
+DECLARE_EVENT_SixParams(FNDICoreDelegates, FNDIConnectionServiceSendAudioEvent, int64, float*, int32, int32, const int32, double)
+
+/**
+	A service which runs and triggers updates for interested parties to be notified of
+	Audio and Video Frame events
+*/
+class NDIIO_API FNDIConnectionService final : public ISubmixBufferListener
+{
+public:
+	static FNDIConnectionServiceSendVideoEvent EventOnSendVideoFrame;
+private:
+	static TMap<USoundSubmix*, FNDIConnectionServiceSendAudioEvent> SubmixSendAudioFrameEvents;
+
+public:
+	/**
+		Constructs a new instance of this object
+	*/
+	FNDIConnectionService();
+
+	// Begin the service
+	bool Start();
+
+	// Stop the service
+	void Shutdown();
+
+	bool BeginBroadcastingActiveViewport();
+	void StopBroadcastingActiveViewport();
+
+	bool IsRunningInPIE() const
+	{
+		return bIsInPIEMode;
+	}
+
+	template <typename UserClass>
+	static void AddAudioSender(UserClass* InUserObject, USoundSubmix* Submix, typename TMemFunPtrType<false, UserClass, void (int64 /*time_code*/, float* /*AudioData*/, int32 /*NumSamples*/, int32 /*NumChannels*/, const int32 /*SampleRate*/, double /*AudioClock*/)>::Type InFunc)
+	{
+		FScopeLock Lock(&AudioSyncContext);
+
+		FNDIConnectionServiceSendAudioEvent& SendAudioEvent = SubmixSendAudioFrameEvents.FindOrAdd(Submix);
+		SendAudioEvent.AddUObject(InUserObject, InFunc);
+	}
+
+	template <typename UserClass>
+	static void RemoveAudioSender(UserClass* InUserObject)
+	{
+		FScopeLock Lock(&AudioSyncContext);
+
+		for (auto it = SubmixSendAudioFrameEvents.CreateIterator(); it; ++it)
+		{
+			it->Value.RemoveAll(InUserObject);
+			if (it->Value.IsBound() == false)
+				it.RemoveCurrent();
+		}
+	}
+
+private:
+	// Handler for when the render thread frame has ended
+	void OnEndRenderFrame();
+
+	void BeginAudioCapture();
+	void StopAudioCapture();
+
+	void OnPostEngineInit();
+	void OnEnginePreExit();
+
+	// Handler for when the active viewport back buffer is about to be resized
+	void OnActiveViewportBackbufferPreResize(void* Backbuffer);
+
+	// Handler for when the back buffer is read to present to the end user
+	void OnActiveViewportBackbufferReadyToPresent(SWindow& Window, const FTextureRHIRef& Backbuffer);
+
+	FTextureResource* GetVideoTextureResource() const;
+
+	virtual void OnNewSubmixBuffer(const USoundSubmix* OwningSubmix, float* AudioData, int32 NumSamples, int32 NumChannels, const int32 SampleRate, double AudioClock) override final;
+#if (ENGINE_MAJOR_VERSION > 5) || ((ENGINE_MAJOR_VERSION == 5) && (ENGINE_MINOR_VERSION >= 4))	// 5.4 or later
+	virtual const FString& GetListenerName() const override final;
+#endif
+
+private:
+	bool bIsInitialized = false;
+	bool bIsAudioInitialized = false;
+	bool bIsBroadcastingActiveViewport = false;
+	bool bIsInPIEMode = false;
+
+	static FCriticalSection AudioSyncContext;
+	static FCriticalSection RenderSyncContext;
+
+	UTextureRenderTarget2D* VideoTexture = nullptr;
+	class UNDIMediaSender* ActiveViewportSender = nullptr;
+};

Plugins/NDIIO/Source/Core/Public/Services/NDIFinderService.h

@@ -0,0 +1,62 @@
+/*
+	Copyright (C) 2024 Vizrt NDI AB. All rights reserved.
+
+	This file and its use within a Product is bound by the terms of NDI SDK license that was provided
+	as part of the NDI SDK. For more information, please review the license and the NDI SDK documentation.
+*/
+
+#pragma once
+
+#include <CoreMinimal.h>
+
+#include <HAL/Runnable.h>
+#include <HAL/ThreadSafeBool.h>
+#include <Structures/NDIConnectionInformation.h>
+
+/**
+	A Runnable object used for Finding NDI network Sources, and updating interested parties
+*/
+class NDIIO_API FNDIFinderService : public FRunnable
+{
+public:
+	FNDIFinderService();
+
+	// Begin the service
+	virtual bool Start();
+
+	// Stop the service
+	virtual void Shutdown();
+
+public:
+	/** Get the available sources on the network */
+	static const TArray<FNDIConnectionInformation> GetNetworkSourceCollection();
+
+	/** Call to update an existing collection of network sources to match the current collection */
+	static bool UpdateSourceCollection(TArray<FNDIConnectionInformation>& InSourceCollection);
+
+	/** Event which is triggered when the collection of network sources has changed */
+	DECLARE_EVENT(FNDICoreDelegates, FNDISourceCollectionChangedEvent)
+	static FNDISourceCollectionChangedEvent EventOnNDISourceCollectionChanged;
+
+protected:
+	/** FRunnable Interface implementation for 'Init' */
+	virtual bool Init() override;
+
+	/** FRunnable Interface implementation for 'Stop' */
+	virtual void Stop() override;
+
+	/** FRunnable Interface implementation for 'Run' */
+	virtual uint32 Run() override;
+
+private:
+	bool UpdateNetworkSourceCollection();
+
+private:
+	bool bShouldWaitOneFrame = true;
+	bool bIsNetworkSourceCollectionDirty = false;
+
+	FThreadSafeBool bIsThreadRunning;
+	FRunnableThread* p_RunnableThread = nullptr;
+
+	static TArray<FNDIConnectionInformation> NetworkSourceCollection;
+};