Decklink abstraction

apps/LoopThroughWithOpenGLCompositing/gl/OpenGLComposite.cpp

@@ -3,9 +3,9 @@
 #include "OpenGLComposite.h"
 #include "GLExtensions.h"
 #include "GlRenderConstants.h"
-#include "OpenGLDeckLinkBridge.h"
 #include "OpenGLRenderPass.h"
 #include "OpenGLShaderPrograms.h"
+#include "OpenGLVideoIOBridge.h"
 #include "PngScreenshotWriter.h"
 #include "RuntimeServices.h"
 #include "ShaderBuildQueue.h"
@@ -22,15 +22,15 @@
 
 OpenGLComposite::OpenGLComposite(HWND hWnd, HDC hDC, HGLRC hRC) :
 	hGLWnd(hWnd), hGLDC(hDC), hGLRC(hRC),
-	mDeckLink(std::make_unique<DeckLinkSession>()),
+	mVideoIO(std::make_unique<DeckLinkSession>()),
 	mRenderer(std::make_unique<OpenGLRenderer>()),
 	mUseCommittedLayerStates(false),
 	mScreenshotRequested(false)
 {
 	InitializeCriticalSection(&pMutex);
 	mRuntimeHost = std::make_unique<RuntimeHost>();
-	mDeckLinkBridge = std::make_unique<OpenGLDeckLinkBridge>(
-		*mDeckLink,
+	mVideoIOBridge = std::make_unique<OpenGLVideoIOBridge>(
+		*mVideoIO,
 		*mRenderer,
 		*mRuntimeHost,
 		pMutex,
@@ -51,13 +51,18 @@ OpenGLComposite::~OpenGLComposite()
 		mRuntimeServices->Stop();
 	if (mShaderBuildQueue)
 		mShaderBuildQueue->Stop();
-	mDeckLink->ReleaseResources();
+	mVideoIO->ReleaseResources();
 	mRenderer->DestroyResources();
 
 	DeleteCriticalSection(&pMutex);
 }
 
 bool OpenGLComposite::InitDeckLink()
+{
+	return InitVideoIO();
+}
+
+bool OpenGLComposite::InitVideoIO()
 {
 	VideoFormatSelection		videoModes;
 	std::string						initFailureReason;
@@ -87,7 +92,7 @@ bool OpenGLComposite::InitDeckLink()
 		}
 	}
 
-	if (!mDeckLink->DiscoverDevicesAndModes(videoModes, initFailureReason))
+	if (!mVideoIO->DiscoverDevicesAndModes(videoModes, initFailureReason))
 	{
 		const char* title = initFailureReason == "Please install the Blackmagic DeckLink drivers to use the features of this application."
 			? "This application requires the DeckLink drivers installed."
@@ -95,7 +100,7 @@ bool OpenGLComposite::InitDeckLink()
 		MessageBoxA(NULL, initFailureReason.c_str(), title, MB_OK | MB_ICONERROR);
 		return false;
 	}
-	if (!mDeckLink->SelectPreferredFormats(videoModes, initFailureReason))
+	if (!mVideoIO->SelectPreferredFormats(videoModes, initFailureReason))
 		goto error;
 
 	if (! CheckOpenGLExtensions())
@@ -110,38 +115,38 @@ bool OpenGLComposite::InitDeckLink()
 		goto error;
 	}
 
-	PublishDeckLinkOutputStatus(mDeckLink->OutputModelName().empty()
+	PublishVideoIOStatus(mVideoIO->OutputModelName().empty()
 		? "DeckLink output device selected."
-		: ("Selected output device: " + mDeckLink->OutputModelName()));
+		: ("Selected output device: " + mVideoIO->OutputModelName()));
 
 	// Resize window to match output video frame, but scale large formats down by half for viewing.
-	if (mDeckLink->OutputFrameWidth() < 1920)
-		resizeWindow(mDeckLink->OutputFrameWidth(), mDeckLink->OutputFrameHeight());
+	if (mVideoIO->OutputFrameWidth() < 1920)
+		resizeWindow(mVideoIO->OutputFrameWidth(), mVideoIO->OutputFrameHeight());
 	else
-		resizeWindow(mDeckLink->OutputFrameWidth() / 2, mDeckLink->OutputFrameHeight() / 2);
+		resizeWindow(mVideoIO->OutputFrameWidth() / 2, mVideoIO->OutputFrameHeight() / 2);
 
-	if (!mDeckLink->ConfigureInput(this, hGLDC, hGLRC, videoModes.input, initFailureReason))
+	if (!mVideoIO->ConfigureInput([this](const VideoIOFrame& frame) { mVideoIOBridge->VideoFrameArrived(frame); }, videoModes.input, initFailureReason))
 	{
 		goto error;
 	}
-	if (!mDeckLink->HasInputDevice() && mRuntimeHost)
+	if (!mVideoIO->HasInputDevice() && mRuntimeHost)
 	{
-		mRuntimeHost->SetSignalStatus(false, mDeckLink->InputFrameWidth(), mDeckLink->InputFrameHeight(), mDeckLink->InputDisplayModeName());
+		mRuntimeHost->SetSignalStatus(false, mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), mVideoIO->InputDisplayModeName());
 	}
 
-	if (!mDeckLink->ConfigureOutput(this, hGLDC, hGLRC, videoModes.output, mRuntimeHost && mRuntimeHost->ExternalKeyingEnabled(), initFailureReason))
+	if (!mVideoIO->ConfigureOutput([this](const VideoIOCompletion& completion) { mVideoIOBridge->PlayoutFrameCompleted(completion); }, videoModes.output, mRuntimeHost && mRuntimeHost->ExternalKeyingEnabled(), initFailureReason))
 	{
 		goto error;
 	}
 
-	PublishDeckLinkOutputStatus(mDeckLink->StatusMessage());
+	PublishVideoIOStatus(mVideoIO->StatusMessage());
 
 	return true;
 
 error:
 	if (!initFailureReason.empty())
 		MessageBoxA(NULL, initFailureReason.c_str(), "DeckLink initialization failed", MB_OK | MB_ICONERROR);
-	mDeckLink->ReleaseResources();
+	mVideoIO->ReleaseResources();
 	return false;
 }
 
@@ -153,7 +158,7 @@ void OpenGLComposite::paintGL()
 		return;
 	}
 
-	mRenderer->PresentToWindow(hGLDC, mDeckLink->OutputFrameWidth(), mDeckLink->OutputFrameHeight());
+	mRenderer->PresentToWindow(hGLDC, mVideoIO->OutputFrameWidth(), mVideoIO->OutputFrameHeight());
 	ValidateRect(hGLWnd, NULL);
 	LeaveCriticalSection(&pMutex);
 }
@@ -174,22 +179,23 @@ void OpenGLComposite::resizeWindow(int width, int height)
 	}
 }
 
-void OpenGLComposite::PublishDeckLinkOutputStatus(const std::string& statusMessage)
+void OpenGLComposite::PublishVideoIOStatus(const std::string& statusMessage)
 {
 	if (!mRuntimeHost)
 		return;
 
 	if (!statusMessage.empty())
-		mDeckLink->SetStatusMessage(statusMessage);
+		mVideoIO->SetStatusMessage(statusMessage);
 
-	mRuntimeHost->SetDeckLinkOutputStatus(
-		mDeckLink->OutputModelName(),
-		mDeckLink->SupportsInternalKeying(),
-		mDeckLink->SupportsExternalKeying(),
-		mDeckLink->KeyerInterfaceAvailable(),
+	mRuntimeHost->SetVideoIOStatus(
+		"decklink",
+		mVideoIO->OutputModelName(),
+		mVideoIO->SupportsInternalKeying(),
+		mVideoIO->SupportsExternalKeying(),
+		mVideoIO->KeyerInterfaceAvailable(),
 		mRuntimeHost->ExternalKeyingEnabled(),
-		mDeckLink->ExternalKeyingActive(),
-		mDeckLink->StatusMessage());
+		mVideoIO->ExternalKeyingActive(),
+		mVideoIO->StatusMessage());
 }
 
 bool OpenGLComposite::InitOpenGLState()
@@ -223,7 +229,7 @@ bool OpenGLComposite::InitOpenGLState()
 		return false;
 	}
 
-	if (!mShaderPrograms->CompileLayerPrograms(mDeckLink->InputFrameWidth(), mDeckLink->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
+	if (!mShaderPrograms->CompileLayerPrograms(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
 	{
 		MessageBoxA(NULL, compilerErrorMessage, "OpenGL shader failed to load or compile", MB_OK);
 		return false;
@@ -234,12 +240,12 @@ bool OpenGLComposite::InitOpenGLState()
 
 	std::string rendererError;
 	if (!mRenderer->InitializeResources(
-		mDeckLink->InputFrameWidth(),
-		mDeckLink->InputFrameHeight(),
-		mDeckLink->CaptureTextureWidth(),
-		mDeckLink->OutputFrameWidth(),
-		mDeckLink->OutputFrameHeight(),
-		mDeckLink->OutputPackTextureWidth(),
+		mVideoIO->InputFrameWidth(),
+		mVideoIO->InputFrameHeight(),
+		mVideoIO->CaptureTextureWidth(),
+		mVideoIO->OutputFrameWidth(),
+		mVideoIO->OutputFrameHeight(),
+		mVideoIO->OutputPackTextureWidth(),
 		rendererError))
 	{
 		MessageBoxA(NULL, rendererError.c_str(), "OpenGL initialization error.", MB_OK);
@@ -251,20 +257,9 @@ bool OpenGLComposite::InitOpenGLState()
 	return true;
 }
 
-// DeckLink delegates still target OpenGLComposite; the bridge owns the per-frame work.
-void OpenGLComposite::VideoFrameArrived(IDeckLinkVideoInputFrame* inputFrame, bool hasNoInputSource)
-{
-	mDeckLinkBridge->VideoFrameArrived(inputFrame, hasNoInputSource);
-}
-
-void OpenGLComposite::PlayoutFrameCompleted(IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompletionResult completionResult)
-{
-	mDeckLinkBridge->PlayoutFrameCompleted(completedFrame, completionResult);
-}
-
 bool OpenGLComposite::Start()
 {
-	return mDeckLink->Start();
+	return mVideoIO->Start();
 }
 
 bool OpenGLComposite::Stop()
@@ -272,10 +267,10 @@ bool OpenGLComposite::Stop()
 	if (mRuntimeServices)
 		mRuntimeServices->Stop();
 
-	const bool wasExternalKeyingActive = mDeckLink->ExternalKeyingActive();
-	mDeckLink->Stop();
+	const bool wasExternalKeyingActive = mVideoIO->ExternalKeyingActive();
+	mVideoIO->Stop();
 	if (wasExternalKeyingActive)
-		PublishDeckLinkOutputStatus("External keying has been disabled.");
+		PublishVideoIOStatus("External keying has been disabled.");
 
 	return true;
 }
@@ -303,7 +298,7 @@ void OpenGLComposite::renderEffect()
 {
 	ProcessRuntimePollResults();
 
-	const bool hasInputSource = mDeckLink->HasInputSource();
+	const bool hasInputSource = mVideoIO->HasInputSource();
 	std::vector<RuntimeRenderState> layerStates;
 	if (mUseCommittedLayerStates)
 	{
@@ -313,7 +308,7 @@ void OpenGLComposite::renderEffect()
 	}
 	else if (mRuntimeHost)
 	{
-		if (mRuntimeHost->TryGetLayerRenderStates(mDeckLink->InputFrameWidth(), mDeckLink->InputFrameHeight(), layerStates))
+		if (mRuntimeHost->TryGetLayerRenderStates(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), layerStates))
 		{
 			mCachedLayerRenderStates = layerStates;
 		}
@@ -327,10 +322,10 @@ void OpenGLComposite::renderEffect()
 	mRenderPass->Render(
 		hasInputSource,
 		layerStates,
-		mDeckLink->InputFrameWidth(),
-		mDeckLink->InputFrameHeight(),
-		mDeckLink->CaptureTextureWidth(),
-		mDeckLink->InputPixelFormat(),
+		mVideoIO->InputFrameWidth(),
+		mVideoIO->InputFrameHeight(),
+		mVideoIO->CaptureTextureWidth(),
+		mVideoIO->InputPixelFormat(),
 		historyCap,
 		[this](const RuntimeRenderState& state, LayerProgram::TextBinding& textBinding, std::string& error) {
 			return mShaderPrograms->UpdateTextBindingTexture(state, textBinding, error);
@@ -345,8 +340,8 @@ void OpenGLComposite::ProcessScreenshotRequest()
 	if (!mScreenshotRequested.exchange(false))
 		return;
 
-	const unsigned width = mDeckLink ? mDeckLink->OutputFrameWidth() : 0;
-	const unsigned height = mDeckLink ? mDeckLink->OutputFrameHeight() : 0;
+	const unsigned width = mVideoIO ? mVideoIO->OutputFrameWidth() : 0;
+	const unsigned height = mVideoIO ? mVideoIO->OutputFrameHeight() : 0;
 	if (width == 0 || height == 0)
 		return;
 
@@ -426,7 +421,7 @@ bool OpenGLComposite::ProcessRuntimePollResults()
 			return true;
 
 		char compilerErrorMessage[1024] = {};
-		if (!mShaderPrograms->CommitPreparedLayerPrograms(readyBuild, mDeckLink->InputFrameWidth(), mDeckLink->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
+		if (!mShaderPrograms->CommitPreparedLayerPrograms(readyBuild, mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight(), sizeof(compilerErrorMessage), compilerErrorMessage))
 		{
 			mRuntimeHost->SetCompileStatus(false, compilerErrorMessage);
 			mUseCommittedLayerStates = true;
@@ -449,13 +444,13 @@ bool OpenGLComposite::ProcessRuntimePollResults()
 
 void OpenGLComposite::RequestShaderBuild()
 {
-	if (!mShaderBuildQueue || !mDeckLink)
+	if (!mShaderBuildQueue || !mVideoIO)
 		return;
 
 	mUseCommittedLayerStates = true;
 	if (mRuntimeHost)
 		mRuntimeHost->ClearReloadRequest();
-	mShaderBuildQueue->RequestBuild(mDeckLink->InputFrameWidth(), mDeckLink->InputFrameHeight());
+	mShaderBuildQueue->RequestBuild(mVideoIO->InputFrameWidth(), mVideoIO->InputFrameHeight());
 }
 
 void OpenGLComposite::broadcastRuntimeState()