telemetry and timing updates

apps/RenderCadenceCompositor/video/DeckLinkOutput.cpp

@@ -15,6 +15,7 @@ bool DeckLinkOutput::Initialize(const DeckLinkOutputConfig& config, CompletionCa
 	mCompletionCallback = completionCallback;
 
 	VideoFormatSelection formats;
+	formats.output = config.outputVideoMode;
 	if (!mSession.DiscoverDevicesAndModes(formats, error))
 		return false;
 	if (!mSession.SelectPreferredFormats(formats, config.outputAlphaRequired, error))
@@ -76,6 +77,12 @@ DeckLinkOutputMetrics DeckLinkOutput::Metrics() const
 	metrics.actualBufferedFramesAvailable = state.actualDeckLinkBufferedFramesAvailable;
 	metrics.actualBufferedFrames = state.actualDeckLinkBufferedFrames;
 	metrics.scheduleCallMilliseconds = state.deckLinkScheduleCallMilliseconds;
+	metrics.scheduleLeadAvailable = state.deckLinkScheduleLeadAvailable;
+	metrics.playbackStreamTime = state.deckLinkPlaybackStreamTime;
+	metrics.playbackFrameIndex = state.deckLinkPlaybackFrameIndex;
+	metrics.nextScheduleFrameIndex = state.deckLinkNextScheduleFrameIndex;
+	metrics.scheduleLeadFrames = state.deckLinkScheduleLeadFrames;
+	metrics.scheduleRealignmentCount = state.deckLinkScheduleRealignmentCount;
 	return metrics;
 }
 

apps/RenderCadenceCompositor/video/DeckLinkOutput.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "DeckLinkDisplayMode.h"
 #include "DeckLinkSession.h"
 #include "VideoIOTypes.h"
 
@@ -12,6 +13,7 @@ namespace RenderCadenceCompositor
 {
 struct DeckLinkOutputConfig
 {
+	VideoFormat outputVideoMode;
 	bool externalKeyingEnabled = false;
 	bool outputAlphaRequired = false;
 };
@@ -26,6 +28,12 @@ struct DeckLinkOutputMetrics
 	bool actualBufferedFramesAvailable = false;
 	uint64_t actualBufferedFrames = 0;
 	double scheduleCallMilliseconds = 0.0;
+	bool scheduleLeadAvailable = false;
+	int64_t playbackStreamTime = 0;
+	uint64_t playbackFrameIndex = 0;
+	uint64_t nextScheduleFrameIndex = 0;
+	int64_t scheduleLeadFrames = 0;
+	uint64_t scheduleRealignmentCount = 0;
 };
 
 class DeckLinkOutput

apps/RenderCadenceCompositor/video/DeckLinkOutputThread.h

@@ -77,7 +77,11 @@ private:
 		while (!mStopping)
 		{
 			const auto exchangeMetrics = mExchange.Metrics();
-			if (exchangeMetrics.scheduledCount >= mConfig.targetBufferedFrames)
+			const auto outputMetrics = mOutput.Metrics();
+			const std::size_t bufferedFrames = outputMetrics.actualBufferedFramesAvailable
+				? static_cast<std::size_t>(outputMetrics.actualBufferedFrames)
+				: exchangeMetrics.scheduledCount;
+			if (bufferedFrames >= mConfig.targetBufferedFrames)
 			{
 				std::this_thread::sleep_for(mConfig.idleSleep);
 				continue;