1.解决黑闪屏问题 2.解决开机第一次启动不能输出问题

MomentaMedia/MomentaMedia.vcxproj

@@ -75,7 +75,7 @@
     <Link>
       <AdditionalLibraryDirectories>.\ThirdParty\libyuv\lib;.\ThirdParty\OpenCV\x64\vc15\lib;.\ThirdParty\NewTek\lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>Processing.NDI.Lib.Advanced.x64.lib;opencv_world460.lib;yuv.lib;jpeg.lib;%(AdditionalDependencies);$(Qt_LIBS_)</AdditionalDependencies>
-      <UACExecutionLevel>RequireAdministrator</UACExecutionLevel>
+      <UACExecutionLevel>AsInvoker</UACExecutionLevel>
     </Link>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'" Label="Configuration">

MomentaMedia/include/BlackMagicDesign/DeckLinkInputDevice.h

@@ -85,6 +85,7 @@ private:
 	//std::thread thd;
 
 	int Index;
+	bool PrevInputSignalAbsent;
 
 };
 

MomentaMedia/include/BlackMagicDesign/DeckLinkOutputDevice.h

@@ -105,4 +105,5 @@ private:
 	qint32 Device_id;
 	qint32 output_deley_ms;//
 	qint32 audio_max_size;
+	BMDDisplayMode outputDisplayMode;
 };

MomentaMedia/src/BlackMagicDesign/DeckLinkInputDevice.cpp

@@ -20,7 +20,8 @@ DeckLinkInputDevice::DeckLinkInputDevice(QObject* parent, ComPtr<IDeckLink>& dev
 	bLastValidFrameStatus(false),
 	SupportedInputConnections(bmdVideoConnectionUnspecified),
 	SelectedInputConnection(bmdVideoConnectionUnspecified),
-	Index(index)
+	Index(index),
+	PrevInputSignalAbsent(false)
 {
 	//thd = std::thread(&DeckLinkInputDevice::ForwardThread, this);
 }
@@ -83,11 +84,28 @@ HRESULT DeckLinkInputDevice::VideoInputFrameArrived(IDeckLinkVideoInputFrame* vi
 	//emit ArrivedFrame(frame);
 	if (videoFrame && Capture) {
 		unsigned flags = videoFrame->GetFlags();
+		bool noInputSourceFlag = false;
 		if (flags & bmdFrameHasNoInputSource)
+		{
 			qDebug() << GetCurrDateTimeStr() << "index: " << Index << " DeckLinkInputDevice get video frame No input source " << hex << flags << " ------------ \n";
+			noInputSourceFlag = true;
+		}
+		bool restartStream = !noInputSourceFlag && PrevInputSignalAbsent;
+		if(restartStream)
+		{ 
+			DeckLinkInput->StopStreams();
+			DeckLinkInput->FlushStreams();
+			DeckLinkInput->StartStreams();
+		}
+		PrevInputSignalAbsent = noInputSourceFlag;
+
+		if (!noInputSourceFlag)
+		{
 			auto cur_time = QDateTime::currentMSecsSinceEpoch();
 			Capture->AddFrame(frame, cur_time);
 		}
+		
+	}
 	if(audioPacket)
 	{ 
 		//qDebug() << "DeckLinkInputDevice get audio packet--------------" << "\n";

MomentaMedia/src/BlackMagicDesign/DeckLinkOutputDevice.cpp

@@ -129,7 +129,7 @@ HRESULT DeckLinkOutputDevice::ScheduledPlaybackHasStopped()
 
 bool DeckLinkOutputDevice::StartPlayback(BMDDisplayMode displayMode, bool enable3D, BMDPixelFormat pixelFormat, bool requireReferenceLocked, IDeckLinkScreenPreviewCallback* screenPreviewCallback)
 {
-	BMDDisplayMode outputDisplayMode;
+	//BMDDisplayMode outputDisplayMode;
 	
 #if OUTPUT_1080
 	switch (OutputPlayMode)
@@ -353,7 +353,7 @@ bool DeckLinkOutputDevice::getReferenceSignalMode(BMDDisplayMode* mode)
 			//std::lock_guard<std::mutex> locker(mutex);
 			current_video_time = outputImage->getInputFrameCurTimeStamp();
 			ComPtr<DeckLinkOutputVideoFrame> videoFrame = MakeComPtr<DeckLinkOutputVideoFrame>(outputImage);
-
+			videoFrame->GetFlags();
 			// Record the stream time of the first frame, so we can start playing from the point
 			//if(!seenFirstVideoFrame)
 			//{
@@ -378,6 +378,8 @@ bool DeckLinkOutputDevice::getReferenceSignalMode(BMDDisplayMode* mode)
 				else if (ret == E_FAIL)
 				{
 					qDebug() << "Failure." << "\n";
+					deckLinkOutput->DisableVideoOutput();
+					deckLinkOutput->EnableVideoOutput(outputDisplayMode, bmdVideoOutputFlagDefault);
 				}
 				else
 				{

MomentaMedia/src/MomentaMedia.cpp

@@ -26,7 +26,7 @@ std::map<qint32, qint32> map_scale_mode;
 
 int main_ver = 1;
 int mid_ver = 0;
-int small_ver = 2;
+int small_ver = 4;
 
 MomentaMedia::MomentaMedia(QWidget *parent)
     : QMainWindow(parent)