Add audio condition check if source is enabled on a specific track

data/locale/en-US.ini

@@ -342,7 +342,9 @@ AdvSceneSwitcher.condition.audio.type.volume="Configured volume level"
 AdvSceneSwitcher.condition.audio.type.syncOffset="Sync offset"
 AdvSceneSwitcher.condition.audio.type.monitor="Audio monitoring"
 AdvSceneSwitcher.condition.audio.type.balance="Audio balance"
+AdvSceneSwitcher.condition.audio.type.track="Audio track"
 AdvSceneSwitcher.condition.audio.entry="{{checkType}}of{{audioSources}}is{{condition}}{{volume}}{{volumeDB}}{{percentDBToggle}}{{syncOffset}}{{monitorTypes}}"
+AdvSceneSwitcher.condition.audio.layout.track="{{audioSources}}is enabled on{{checkType}}{{track}}"
 AdvSceneSwitcher.condition.cursor="Cursor"
 AdvSceneSwitcher.condition.cursor.type.region="is in region"
 AdvSceneSwitcher.condition.cursor.type.moving="is moving"
@@ -973,7 +975,6 @@ AdvSceneSwitcher.action.playAudio.monitorUnavailable="Audio monitoring not avail
 AdvSceneSwitcher.action.playAudio.tracks="Tracks"
 AdvSceneSwitcher.action.playAudio.layout.startOffset="{{useStartOffset}}Start at{{startOffset}}"
 AdvSceneSwitcher.action.playAudio.layout.playbackDuration="{{useDuration}}Play for{{playbackDuration}}(0 = until end)"
-AdvSceneSwitcher.action.playAudio.mono="Mono"
 AdvSceneSwitcher.action.recording="Recording"
 AdvSceneSwitcher.action.recording.type.stop="Stop recording"
 AdvSceneSwitcher.action.recording.type.start="Start recording"
@@ -2365,6 +2366,7 @@ AdvSceneSwitcher.tempVar.audio.muted="Source muted"
 AdvSceneSwitcher.tempVar.audio.sync_offset="Source audio sync offset"
 AdvSceneSwitcher.tempVar.audio.monitor="Source audio monitor type"
 AdvSceneSwitcher.tempVar.audio.balance="Source audio balance"
+AdvSceneSwitcher.tempVar.audio.trackEnabled="Audio track enabled"
 
 AdvSceneSwitcher.tempVar.clipboard.mimeType.primary="Primary clipboard item MIME type"
 AdvSceneSwitcher.tempVar.clipboard.mimeType.primary.description="Highest priority MIME type of the current item stored in clipboard, if available."

plugins/base/macro-action-play-audio.cpp

@@ -2,64 +2,18 @@
 #include "audio-helpers.hpp"
 #include "layout-helpers.hpp"
 #include "macro-helpers.hpp"
-#include "plugin-state-helpers.hpp"
 #include "sync-helpers.hpp"
 
-#include <obs-frontend-api.h>
-
 #include <chrono>
-#include <mutex>
-#include <set>
 #include <QFileInfo>
 #include <QLabel>
 
 namespace advss {
 
+// Use a high output channel index that is unlikely to be claimed by OBS or
+// other plugins. OBS supports channels 0-63; channel 0 is the main scene.
 static constexpr uint32_t kPlaybackOutputChannel = 63;
 
-// Tracks rawSource handles held by background cleanup threads so they can be
-// stopped early when OBS begins shutdown, before audio is freed.
-static std::mutex g_activeSourcesMutex;
-static std::set<obs_source_t *> g_activeSources;
-
-static void registerActiveSource(obs_source_t *source)
-{
-	std::lock_guard<std::mutex> lock(g_activeSourcesMutex);
-	g_activeSources.insert(source);
-}
-
-static void unregisterActiveSource(obs_source_t *source)
-{
-	std::lock_guard<std::mutex> lock(g_activeSourcesMutex);
-	g_activeSources.erase(source);
-}
-
-static void stopAllActiveSources()
-{
-	std::lock_guard<std::mutex> lock(g_activeSourcesMutex);
-	for (auto *source : g_activeSources) {
-		obs_source_media_stop(source);
-	}
-}
-
-static void handleObsEvent(enum obs_frontend_event event, void *)
-{
-	if (event == OBS_FRONTEND_EVENT_SCRIPTING_SHUTDOWN ||
-	    event == OBS_FRONTEND_EVENT_EXIT) {
-		stopAllActiveSources();
-	}
-}
-
-static bool setup()
-{
-	AddPluginPostLoadStep([]() {
-		obs_frontend_add_event_callback(handleObsEvent, nullptr);
-	});
-	return true;
-}
-
-static bool setupDone = setup();
-
 const std::string MacroActionPlayAudio::id = "play_audio";
 
 bool MacroActionPlayAudio::_registered = MacroActionFactory::Register(
@@ -69,7 +23,6 @@ bool MacroActionPlayAudio::_registered = MacroActionFactory::Register(
 
 static void deactivatePlayback(obs_source_t *source, bool wantsOutput)
 {
-	obs_source_media_stop(source);
 	if (wantsOutput) {
 		obs_set_output_source(kPlaybackOutputChannel, nullptr);
 	} else {
@@ -85,7 +38,8 @@ static void waitForPlaybackToEnd(Macro *macro, obs_source_t *source,
 	std::unique_lock<std::mutex> lock(*GetMutex());
 	SetMacroAbortWait(false);
 
-	// Poll until the source starts playing or the macro is stopped.
+	// The media source needs time to open and decode before reaching
+	// PLAYING state. Poll until it starts (or the macro is stopped).
 	while (!MacroWaitShouldAbort() && !MacroIsStopped(macro)) {
 		if (obs_source_media_get_state(source) ==
 		    OBS_MEDIA_STATE_PLAYING) {
@@ -94,8 +48,9 @@ static void waitForPlaybackToEnd(Macro *macro, obs_source_t *source,
 		GetMacroWaitCV().wait_for(lock, 10ms);
 	}
 
-	// Wait for playback to end. Two consecutive non-playing samples are
-	// required to avoid false positives on brief state transitions.
+	// Now wait for playback to end. Require two consecutive non-playing
+	// samples to avoid false positives on brief state transitions.
+	// If maxMs > 0, also stop once that many milliseconds have elapsed.
 	const auto playbackStart = std::chrono::steady_clock::now();
 	static const int kStopThreshold = 2;
 	int stoppedCount = 0;
@@ -140,6 +95,7 @@ bool MacroActionPlayAudio::PerformAction()
 	obs_data_set_string(settings, "local_file", path.c_str());
 	obs_data_set_bool(settings, "is_local_file", true);
 	obs_data_set_bool(settings, "looping", false);
+	// Disable automatic restart on activate so we control start explicitly.
 	obs_data_set_bool(settings, "restart_on_activate", false);
 	obs_data_set_bool(settings, "close_when_inactive", true);
 
@@ -157,11 +113,10 @@ bool MacroActionPlayAudio::PerformAction()
 		DecibelToPercent(static_cast<float>(_volumeDB.GetValue()));
 	obs_source_set_volume(source, vol);
 	obs_source_set_monitoring_type(source, _monitorType);
-	if (_mono) {
-		obs_source_set_flags(source, OBS_SOURCE_FLAG_FORCE_MONO);
-	}
 
-	// Fall back to monitor-only if all output tracks are deselected.
+	// Fall back to monitor-only if all output tracks are deselected —
+	// there is no point routing through the output channel if the mixer
+	// mask would silence every track.
 	const bool wantsOutput =
 		(_monitorType != OBS_MONITORING_TYPE_MONITOR_ONLY) &&
 		(_audioMixers != 0);
@@ -173,8 +128,10 @@ bool MacroActionPlayAudio::PerformAction()
 
 	if (wantsOutput) {
 		obs_source_set_audio_mixers(source, _audioMixers);
-		// Route through a private scene positioned off-screen so the
-		// audio mixes into the output without video appearing on screen.
+		// Route through a private scene so we can position the scene
+		// item far off-screen. This keeps the item "visible" (so audio
+		// is still mixed) while ensuring its video never intersects the
+		// output frame.
 		OBSSceneAutoRelease audioScene =
 			obs_scene_create_private("advss_audio_scene");
 		obs_sceneitem_t *item = obs_scene_add(audioScene, source);
@@ -184,7 +141,8 @@ bool MacroActionPlayAudio::PerformAction()
 		}
 		obs_set_output_source(kPlaybackOutputChannel,
 				      obs_scene_get_source(audioScene));
-		// audioScene is released here; the output channel keeps the scene alive.
+		// audioScene released here; the output channel holds the
+		// remaining reference and keeps the scene alive.
 	} else {
 		obs_source_set_audio_mixers(source, 0);
 		obs_source_inc_active(source);
@@ -209,15 +167,15 @@ bool MacroActionPlayAudio::PerformAction()
 		return true;
 	}
 
-	// Keep the source alive until playback ends via a background thread.
+	// Keep the source alive in a background thread that cleans up
+	// once playback finishes. Grab an extra strong reference so the
+	// source survives beyond this stack frame.
 	auto rawSource = obs_source_get_ref(source);
-	registerActiveSource(rawSource);
 	auto macro = GetMacro();
 
 	std::thread cleanupThread([rawSource, wantsOutput, macro, maxMs]() {
 		waitForPlaybackToEnd(macro, rawSource, maxMs);
 		deactivatePlayback(rawSource, wantsOutput);
-		unregisterActiveSource(rawSource);
 		obs_source_release(rawSource);
 	});
 	AddMacroHelperThread(macro, std::move(cleanupThread));
@@ -246,7 +204,6 @@ bool MacroActionPlayAudio::Save(obs_data_t *obj) const
 	obs_data_set_bool(obj, "useDuration", _useDuration);
 	_playbackDuration.Save(obj, "playbackDuration");
 	obs_data_set_bool(obj, "waitForCompletion", _waitForCompletion);
-	obs_data_set_bool(obj, "mono", _mono);
 	return true;
 }
 
@@ -264,7 +221,6 @@ bool MacroActionPlayAudio::Load(obs_data_t *obj)
 	_useDuration = obs_data_get_bool(obj, "useDuration");
 	_playbackDuration.Load(obj, "playbackDuration");
 	_waitForCompletion = obs_data_get_bool(obj, "waitForCompletion");
-	_mono = obs_data_get_bool(obj, "mono");
 	return true;
 }
 
@@ -306,9 +262,7 @@ MacroActionPlayAudioEdit::MacroActionPlayAudioEdit(
 	  _useDuration(new QCheckBox(this)),
 	  _playbackDuration(new DurationSelection(this, true, 0.0)),
 	  _waitForCompletion(new QCheckBox(
-		  obs_module_text("AdvSceneSwitcher.action.playAudio.wait"))),
-	  _mono(new QCheckBox(
-		  obs_module_text("AdvSceneSwitcher.action.playAudio.mono")))
+		  obs_module_text("AdvSceneSwitcher.action.playAudio.wait")))
 {
 	_volumeDB->setMinimum(-100.0);
 	_volumeDB->setMaximum(0.0);
@@ -349,8 +303,6 @@ MacroActionPlayAudioEdit::MacroActionPlayAudioEdit(
 			 SLOT(PlaybackDurationChanged(const Duration &)));
 	QWidget::connect(_waitForCompletion, SIGNAL(stateChanged(int)), this,
 			 SLOT(WaitChanged(int)));
-	QWidget::connect(_mono, SIGNAL(stateChanged(int)), this,
-			 SLOT(MonoChanged(int)));
 
 	auto tracksLayout = new QHBoxLayout;
 	tracksLayout->setContentsMargins(0, 0, 0, 0);
@@ -394,7 +346,6 @@ MacroActionPlayAudioEdit::MacroActionPlayAudioEdit(
 	mainLayout->addLayout(startOffsetLayout);
 	mainLayout->addLayout(playbackDurationLayout);
 	mainLayout->addWidget(_waitForCompletion);
-	mainLayout->addWidget(_mono);
 	setLayout(mainLayout);
 
 	_entryData = entryData;
@@ -424,7 +375,6 @@ void MacroActionPlayAudioEdit::UpdateEntryData()
 	_playbackDuration->SetDuration(_entryData->_playbackDuration);
 	_playbackDuration->setEnabled(_entryData->_useDuration);
 	_waitForCompletion->setChecked(_entryData->_waitForCompletion);
-	_mono->setChecked(_entryData->_mono);
 }
 
 void MacroActionPlayAudioEdit::FilePathChanged(const QString &path)
@@ -493,10 +443,4 @@ void MacroActionPlayAudioEdit::WaitChanged(int value)
 	_entryData->_waitForCompletion = value;
 }
 
-void MacroActionPlayAudioEdit::MonoChanged(int value)
-{
-	GUARD_LOADING_AND_LOCK();
-	_entryData->_mono = value;
-}
-
 } // namespace advss

plugins/base/macro-action-play-audio.hpp

@@ -37,7 +37,6 @@ public:
 	bool _useDuration = false;
 	Duration _playbackDuration;
 	bool _waitForCompletion = false;
-	bool _mono = false;
 
 	static bool _registered;
 	static const std::string id;
@@ -69,7 +68,6 @@ private slots:
 	void UseDurationChanged(int);
 	void PlaybackDurationChanged(const Duration &);
 	void WaitChanged(int value);
-	void MonoChanged(int value);
 
 signals:
 	void HeaderInfoChanged(const QString &);
@@ -85,7 +83,6 @@ private:
 	QCheckBox *_useDuration;
 	DurationSelection *_playbackDuration;
 	QCheckBox *_waitForCompletion;
-	QCheckBox *_mono;
 
 	std::shared_ptr<MacroActionPlayAudio> _entryData;
 	bool _loading = true;

plugins/base/macro-condition-audio.cpp

@@ -25,6 +25,8 @@ const static std::map<MacroConditionAudio::Type, std::string> checkTypes = {
 	 "AdvSceneSwitcher.condition.audio.type.monitor"},
 	{MacroConditionAudio::Type::BALANCE,
 	 "AdvSceneSwitcher.condition.audio.type.balance"},
+	{MacroConditionAudio::Type::TRACK,
+	 "AdvSceneSwitcher.condition.audio.type.track"},
 };
 
 const static std::map<MacroConditionAudio::OutputCondition, std::string>
@@ -245,6 +247,20 @@ bool MacroConditionAudio::CheckBalance()
 	return ret && source;
 }
 
+bool MacroConditionAudio::CheckTrack()
+{
+	if (!_audioSource.GetSource()) {
+		return false;
+	}
+
+	OBSSourceAutoRelease source =
+		obs_weak_source_get_source(_audioSource.GetSource());
+	uint32_t mixers = obs_source_get_audio_mixers(source);
+	bool enabled = (mixers >> (uint32_t)(_track - 1)) & 1u;
+	SetTempVarValue("track_enabled", enabled ? "true" : "false");
+	return enabled && source;
+}
+
 bool MacroConditionAudio::CheckCondition()
 {
 	bool ret = false;
@@ -264,6 +280,9 @@ bool MacroConditionAudio::CheckCondition()
 	case Type::BALANCE:
 		ret = CheckBalance();
 		break;
+	case Type::TRACK:
+		ret = CheckTrack();
+		break;
 	}
 
 	if (GetVariableValue().empty()) {
@@ -281,6 +300,7 @@ bool MacroConditionAudio::Save(obs_data_t *obj) const
 	_volumePercent.Save(obj, "volume");
 	_syncOffset.Save(obj, "syncOffset");
 	_balance.Save(obj, "balance");
+	_track.Save(obj, "track");
 	obs_data_set_int(obj, "checkType", static_cast<int>(_checkType));
 	obs_data_set_int(obj, "outputCondition",
 			 static_cast<int>(_outputCondition));
@@ -346,6 +366,7 @@ bool MacroConditionAudio::Load(obs_data_t *obj)
 		_useDb = obs_data_get_bool(obj, "useDb");
 		_volumeDB.Load(obj, "volumeDB");
 	}
+	_track.Load(obj, "track");
 	return true;
 }
 
@@ -421,6 +442,12 @@ void MacroConditionAudio::SetupTempVars()
 			   obs_module_text(
 				   "AdvSceneSwitcher.tempVar.audio.balance"));
 		break;
+	case Type::TRACK:
+		AddTempvar(
+			"track_enabled",
+			obs_module_text(
+				"AdvSceneSwitcher.tempVar.audio.trackEnabled"));
+		break;
 	default:
 		break;
 	}
@@ -468,6 +495,7 @@ static QStringList getAudioSourcesList()
 MacroConditionAudioEdit::MacroConditionAudioEdit(
 	QWidget *parent, std::shared_ptr<MacroConditionAudio> entryData)
 	: QWidget(parent),
+	  _layout(new QHBoxLayout),
 	  _checkTypes(new QComboBox()),
 	  _sources(new SourceSelectionWidget(this, getAudioSourcesList, true)),
 	  _condition(new QComboBox()),
@@ -476,7 +504,8 @@ MacroConditionAudioEdit::MacroConditionAudioEdit(
 	  _percentDBToggle(new QPushButton),
 	  _syncOffset(new VariableSpinBox()),
 	  _monitorTypes(new QComboBox),
-	  _balance(new SliderSpinBox(0., 1., ""))
+	  _balance(new SliderSpinBox(0., 1., "")),
+	  _track(new VariableSpinBox())
 {
 	_volumePercent->setSuffix("%");
 	_volumePercent->setMaximum(100);
@@ -491,6 +520,9 @@ MacroConditionAudioEdit::MacroConditionAudioEdit(
 	_syncOffset->setMaximum(20000);
 	_syncOffset->setSuffix("ms");
 
+	_track->setMinimum(1);
+	_track->setMaximum(32);
+
 	QWidget::connect(_checkTypes, SIGNAL(currentIndexChanged(int)), this,
 			 SLOT(CheckTypeChanged(int)));
 	QWidget::connect(
@@ -519,27 +551,16 @@ MacroConditionAudioEdit::MacroConditionAudioEdit(
 		this, SLOT(VolumeDBChanged(const NumberVariable<double> &)));
 	QWidget::connect(_percentDBToggle, SIGNAL(clicked()), this,
 			 SLOT(PercentDBClicked()));
+	QWidget::connect(
+		_track,
+		SIGNAL(NumberVariableChanged(const NumberVariable<int> &)),
+		this, SLOT(TrackChanged(const NumberVariable<int> &)));
 
 	populateCheckTypes(_checkTypes);
 	PopulateMonitorTypeSelection(_monitorTypes);
 
-	QHBoxLayout *switchLayout = new QHBoxLayout;
-	std::unordered_map<std::string, QWidget *> widgetPlaceholders = {
-		{"{{checkType}}", _checkTypes},
-		{"{{audioSources}}", _sources},
-		{"{{volume}}", _volumePercent},
-		{"{{syncOffset}}", _syncOffset},
-		{"{{monitorTypes}}", _monitorTypes},
-		{"{{balance}}", _balance},
-		{"{{condition}}", _condition},
-		{"{{volumeDB}}", _volumeDB},
-		{"{{percentDBToggle}}", _percentDBToggle},
-	};
-	PlaceWidgets(obs_module_text("AdvSceneSwitcher.condition.audio.entry"),
-		     switchLayout, widgetPlaceholders);
-
 	QVBoxLayout *mainLayout = new QVBoxLayout;
-	mainLayout->addLayout(switchLayout);
+	mainLayout->addLayout(_layout);
 	mainLayout->addWidget(_balance);
 	setLayout(mainLayout);
 
@@ -608,6 +629,12 @@ void MacroConditionAudioEdit::BalanceChanged(const NumberVariable<double> &value
 	_entryData->_balance = value;
 }
 
+void MacroConditionAudioEdit::TrackChanged(const NumberVariable<int> &value)
+{
+	GUARD_LOADING_AND_LOCK();
+	_entryData->_track = value;
+}
+
 void MacroConditionAudioEdit::VolumeDBChanged(
 	const NumberVariable<double> &value)
 {
@@ -692,6 +719,8 @@ void MacroConditionAudioEdit::CheckTypeChanged(int idx)
 	} else if (_entryData->GetType() ==
 		   MacroConditionAudio::Type::CONFIGURED_VOLUME) {
 		populateVolumeConditionSelection(_condition);
+	} else if (_entryData->GetType() == MacroConditionAudio::Type::TRACK) {
+		_condition->clear();
 	}
 	SetWidgetVisibility();
 }
@@ -708,6 +737,7 @@ void MacroConditionAudioEdit::UpdateEntryData()
 	_syncOffset->SetValue(_entryData->_syncOffset);
 	_monitorTypes->setCurrentIndex(_entryData->_monitorType);
 	_balance->SetDoubleValue(_entryData->_balance);
+	_track->SetValue(_entryData->_track);
 	_checkTypes->setCurrentIndex(
 		_checkTypes->findData(static_cast<int>(_entryData->GetType())));
 
@@ -748,26 +778,63 @@ void MacroConditionAudioEdit::SetWidgetVisibility()
 		return;
 	}
 
+	_layout->removeWidget(_checkTypes);
+	_layout->removeWidget(_sources);
+	_layout->removeWidget(_condition);
+	_layout->removeWidget(_volumePercent);
+	_layout->removeWidget(_volumeDB);
+	_layout->removeWidget(_percentDBToggle);
+	_layout->removeWidget(_syncOffset);
+	_layout->removeWidget(_monitorTypes);
+	_layout->removeWidget(_track);
+	ClearLayout(_layout);
+
+	const std::unordered_map<std::string, QWidget *> placeholders = {
+		{"{{checkType}}", _checkTypes},
+		{"{{audioSources}}", _sources},
+		{"{{condition}}", _condition},
+		{"{{volume}}", _volumePercent},
+		{"{{volumeDB}}", _volumeDB},
+		{"{{percentDBToggle}}", _percentDBToggle},
+		{"{{syncOffset}}", _syncOffset},
+		{"{{monitorTypes}}", _monitorTypes},
+		{"{{track}}", _track},
+	};
+
+	const bool isTrack = _entryData->GetType() ==
+			     MacroConditionAudio::Type::TRACK;
+	PlaceWidgets(
+		obs_module_text(
+			isTrack ? "AdvSceneSwitcher.condition.audio.layout.track"
+				: "AdvSceneSwitcher.condition.audio.entry"),
+		_layout, placeholders);
+
 	_condition->setVisible(
-		_entryData->GetType() ==
-			MacroConditionAudio::Type::OUTPUT_VOLUME ||
-		_entryData->GetType() ==
-			MacroConditionAudio::Type::CONFIGURED_VOLUME ||
-		_entryData->GetType() == MacroConditionAudio::Type::BALANCE ||
-		_entryData->GetType() ==
-			MacroConditionAudio::Type::SYNC_OFFSET);
-	_syncOffset->setVisible(_entryData->GetType() ==
-				MacroConditionAudio::Type::SYNC_OFFSET);
-	_monitorTypes->setVisible(_entryData->GetType() ==
-				  MacroConditionAudio::Type::MONITOR);
+		!isTrack &&
+		(_entryData->GetType() ==
+			 MacroConditionAudio::Type::OUTPUT_VOLUME ||
+		 _entryData->GetType() ==
+			 MacroConditionAudio::Type::CONFIGURED_VOLUME ||
+		 _entryData->GetType() == MacroConditionAudio::Type::BALANCE ||
+		 _entryData->GetType() ==
+			 MacroConditionAudio::Type::SYNC_OFFSET));
+	_syncOffset->setVisible(!isTrack &&
+				_entryData->GetType() ==
+					MacroConditionAudio::Type::SYNC_OFFSET);
+	_monitorTypes->setVisible(!isTrack &&
+				  _entryData->GetType() ==
+					  MacroConditionAudio::Type::MONITOR);
+	_track->setVisible(isTrack);
+	_volumePercent->setVisible(!isTrack && HasVolumeControl() &&
+				   !_entryData->_useDb);
+	_volumeDB->setVisible(!isTrack && HasVolumeControl() &&
+			      _entryData->_useDb);
+	_percentDBToggle->setText(_entryData->_useDb ? "dB" : "%");
+	_percentDBToggle->setVisible(!isTrack && HasVolumeControl());
 	_balance->setVisible(_entryData->GetType() ==
 			     MacroConditionAudio::Type::BALANCE);
 	_volMeter->setVisible(_entryData->GetType() ==
 			      MacroConditionAudio::Type::OUTPUT_VOLUME);
-	_volumePercent->setVisible(HasVolumeControl() && !_entryData->_useDb);
-	_volumeDB->setVisible(HasVolumeControl() && _entryData->_useDb);
-	_percentDBToggle->setText(_entryData->_useDb ? "dB" : "%");
-	_percentDBToggle->setVisible(HasVolumeControl());
 	adjustSize();
 }
 

plugins/base/macro-condition-audio.hpp

@@ -5,6 +5,7 @@
 #include "source-selection.hpp"
 
 #include <limits>
+#include <QHBoxLayout>
 #include <QWidget>
 #include <QComboBox>
 #include <chrono>
@@ -36,6 +37,7 @@ public:
 		SYNC_OFFSET,
 		MONITOR,
 		BALANCE,
+		TRACK,
 	};
 	void SetType(const Type &);
 	Type GetType() const { return _checkType; }
@@ -60,6 +62,7 @@ public:
 	IntVariable _syncOffset = 0;
 	obs_monitoring_type _monitorType = OBS_MONITORING_TYPE_NONE;
 	DoubleVariable _balance = 0.5;
+	IntVariable _track = 1;
 	OutputCondition _outputCondition = OutputCondition::ABOVE;
 	VolumeCondition _volumeCondition = VolumeCondition::ABOVE;
 	obs_volmeter_t *_volmeter = nullptr;
@@ -70,6 +73,7 @@ private:
 	bool CheckSyncOffset();
 	bool CheckMonitor();
 	bool CheckBalance();
+	bool CheckTrack();
 	void SetupTempVars();
 	float GetVolumePeak();
 
@@ -111,6 +115,7 @@ private slots:
 	void VolumeDBChanged(const NumberVariable<double> &value);
 	void PercentDBClicked();
 	void SyncSliderAndValueSelection(bool sliderMoved);
+	void TrackChanged(const NumberVariable<int> &value);
 
 signals:
 	void HeaderInfoChanged(const QString &);
@@ -119,6 +124,7 @@ private:
 	void SetWidgetVisibility();
 	bool HasVolumeControl() const;
 
+	QHBoxLayout *_layout;
 	QComboBox *_checkTypes;
 	SourceSelectionWidget *_sources;
 	QComboBox *_condition;
@@ -128,6 +134,7 @@ private:
 	VariableSpinBox *_syncOffset;
 	QComboBox *_monitorTypes;
 	SliderSpinBox *_balance;
+	VariableSpinBox *_track;
 	VolControl *_volMeter = nullptr;
 
 	std::shared_ptr<MacroConditionAudio> _entryData;