audio-monitor-dock.cpp

#include "audio-monitor-dock.hpp"

#include <QMainWindow>
#include <QMenu>
#include <QPushButton>
#include <QScrollArea>
#include <QStackedWidget>

#include "audio-output-control.hpp"
#include "obs-frontend-api.h"
#include "obs-module.h"
#include "obs.h"
#include "util/config-file.h"
#include "util/platform.h"

#define QT_UTF8(str) QString::fromUtf8(str)
#define QT_TO_UTF8(str) str.toUtf8().constData()

MODULE_EXPORT void load_audio_monitor_dock()
{
	const auto main_window = static_cast<QMainWindow *>(obs_frontend_get_main_window());
	obs_frontend_push_ui_translation(obs_module_get_string);

#if LIBOBS_API_VER >= MAKE_SEMANTIC_VERSION(30, 0, 0)
	obs_frontend_add_dock_by_id("AudioMonitorDock", obs_module_text("AudioMonitor"), new AudioMonitorDock(main_window));
#else
	const auto dock = new QDockWidget(main_window);
	dock->setObjectName("AudioMonitorDock");
	dock->setWindowTitle(QString::fromUtf8(obs_module_text("AudioMonitor")));
	dock->setWidget(new AudioMonitorDock(main_window));
	dock->setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable);
	dock->setFloating(true);
	dock->hide();
	obs_frontend_add_dock(dock);
#endif
	obs_frontend_pop_ui_translation();
}

AudioMonitorDock::AudioMonitorDock(QWidget *parent) : QStackedWidget(parent)
{

	mainLayout = new QGridLayout;
	mainLayout->setAlignment(Qt::AlignTop | Qt::AlignLeft);
	mainLayout->setRowStretch(1, 1);
	mainLayout->setContentsMargins(4, 4, 4, 4);
	mainLayout->setSpacing(8);

	char *file = obs_module_config_path("config.json");
	obs_data_t *data = nullptr;
	if (file) {
		data = obs_data_create_from_json_file(file);
		bfree(file);
	}
	if (data) {
		showOutputMeter = obs_data_get_bool(data, "showOutputMeter");
		showOutputSlider = obs_data_get_bool(data, "showOutputSlider");
		showOnlyActive = obs_data_get_bool(data, "showOnlyActive");
		showSliderNames = obs_data_get_bool(data, "showSliderNames");
		auto *outputs = obs_data_get_array(data, "outputs");
		if (outputs) {
			auto output_count = obs_data_array_count(outputs);
			if (output_count > MAX_AUDIO_MIXES)
				output_count = MAX_AUDIO_MIXES;
			for (size_t i = 0; i < output_count; i++) {
				auto *output_data = obs_data_array_item(outputs, i);
				if (output_data) {
					if (obs_data_get_bool(output_data, "enabled")) {
						addOutputTrack((int)i, output_data);
					}
					obs_data_release(output_data);
				}
			}
			obs_data_array_release(outputs);
		} else {
			auto *control = new AudioOutputControl(0);
			control->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
			mainLayout->addWidget(control, 1, 1);
		}
		obs_data_release(data);
	} else {
		showOutputMeter = false;
		showOutputSlider = false;
		showOnlyActive = false;
		showSliderNames = false;
		auto *control = new AudioOutputControl(0);
		control->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
		mainLayout->addWidget(control, 1, 1);
	}

	signal_handler_connect_global(obs_get_signal_handler(), OBSSignal, this);

	obs_frontend_add_event_callback(OBSFrontendEvent, this);

	auto *dockWidgetContents = new QWidget;
	dockWidgetContents->setContextMenuPolicy(Qt::CustomContextMenu);
	connect(dockWidgetContents, &QWidget::customContextMenuRequested, this, &AudioMonitorDock::ConfigClicked);

	auto *scrollArea = new HScrollArea();
	scrollArea->setContextMenuPolicy(Qt::CustomContextMenu);
	scrollArea->setFrameShape(QFrame::StyledPanel);
	scrollArea->setFrameShadow(QFrame::Sunken);
	scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
	scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
	scrollArea->setWidgetResizable(true);

	setObjectName(QStringLiteral("stackedMixerArea"));
	addWidget(scrollArea);

	auto *config = new QPushButton(this);
	config->setProperty("themeID", "configIconSmall");
	config->setProperty("class", "icon-gear");
	config->setFlat(true);
	config->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
	config->setMaximumSize(22, 22);
	config->setAutoDefault(false);

	mainLayout->addWidget(config, 1, 0);

	connect(config, &QAbstractButton::clicked, this, &AudioMonitorDock::ConfigClicked);

	dockWidgetContents->setLayout(mainLayout);
	scrollArea->setWidget(dockWidgetContents);
}

AudioMonitorDock::~AudioMonitorDock()
{
	signal_handler_disconnect_global(obs_get_signal_handler(), OBSSignal, this);
	obs_frontend_remove_event_callback(OBSFrontendEvent, this);
	char *file = obs_module_config_path("config.json");
	if (file) {
		obs_data_t *data = obs_data_create_from_json_file(file);
		if (!data)
			data = obs_data_create();
		obs_data_set_bool(data, "showOutputMeter", showOutputMeter);
		obs_data_set_bool(data, "showOutputSlider", showOutputSlider);
		obs_data_set_bool(data, "showOnlyActive", showOnlyActive);
		obs_data_set_bool(data, "showSliderNames", showSliderNames);
		auto *outputs = obs_data_array_create();
		for (int i = 0; i < MAX_AUDIO_MIXES; i++) {
			auto *item = mainLayout->itemAtPosition(1, i + 1);
			obs_data_t *output;
			if (item) {
				AudioOutputControl *control = static_cast<AudioOutputControl *>(item->widget());
				output = control->GetSettings();
				obs_data_set_bool(output, "enabled", true);
			} else {
				output = obs_data_create();
				obs_data_set_bool(output, "enabled", false);
			}
			obs_data_array_push_back(outputs, output);
			obs_data_release(output);
		}
		obs_data_set_array(data, "outputs", outputs);
		obs_data_array_release(outputs);

		if (!obs_data_save_json(data, file)) {
			char *path = obs_module_config_path("");
			if (path) {
				os_mkdirs(path);
				bfree(path);
			}
			obs_data_save_json(data, file);
		}
		obs_data_release(data);
		bfree(file);
	}
}

void AudioMonitorDock::OBSSignal(void *data, const char *signal, calldata_t *call_data)
{
	obs_source_t *source = static_cast<obs_source_t *>(calldata_ptr(call_data, "source"));
	if (!source)
		return;
	const uint32_t flags = obs_source_get_output_flags(source);
	if ((flags & OBS_SOURCE_AUDIO) == 0)
		return;
	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);

	if (strcmp(signal, "source_create") == 0) {
		signal_handler_connect(obs_source_get_signal_handler(source), "filter_add", OBSFilterAdd, data);
		signal_handler_connect(obs_source_get_signal_handler(source), "filter_remove", OBSFilterRemove, data);
		if (!dock->showOnlyActive || obs_source_active(source)) {
			QMetaObject::invokeMethod(dock, "AddAudioSource", Qt::QueuedConnection,
						  Q_ARG(OBSSource, OBSSource(source)));
		}
	} else if (strcmp(signal, "source_load") == 0) {
		if (!dock->showOnlyActive || obs_source_active(source)) {
			QMetaObject::invokeMethod(dock, "AddAudioSource", Qt::QueuedConnection,
						  Q_ARG(OBSSource, OBSSource(source)));
		}
	} else if (strcmp(signal, "source_remove") == 0 || strcmp(signal, "source_destroy") == 0) {
		signal_handler_disconnect(obs_source_get_signal_handler(source), "filter_add", OBSFilterAdd, data);
		signal_handler_disconnect(obs_source_get_signal_handler(source), "filter_remove", OBSFilterRemove, data);
		const char *source_name = obs_source_get_name(source);
		if (source_name && strlen(source_name)) {
			QMetaObject::invokeMethod(dock, "RemoveAudioControl", Qt::QueuedConnection,
						  Q_ARG(QString, QT_UTF8(source_name)));
		}
	} else if (strcmp(signal, "source_volume") == 0) {
	} else if (strcmp(signal, "source_rename") == 0) {
		QString new_name = QT_UTF8(calldata_string(call_data, "new_name"));
		QString prev_name = QT_UTF8(calldata_string(call_data, "prev_name"));
		QMetaObject::invokeMethod(dock, "RenameAudioControl", Qt::QueuedConnection, Q_ARG(QString, QString(new_name)),
					  Q_ARG(QString, QString(prev_name)));
	} else if (strcmp(signal, "source_activate") == 0) {
		if (!dock->showOnlyActive)
			return;
		QMetaObject::invokeMethod(dock, "AddAudioSource", Qt::QueuedConnection, Q_ARG(OBSSource, OBSSource(source)));
	} else if (strcmp(signal, "source_deactivate") == 0) {
		if (!dock->showOnlyActive)
			return;
		QString sourceName = QT_UTF8(obs_source_get_name(source));
		QMetaObject::invokeMethod(dock, "RemoveAudioControl", Qt::QueuedConnection, Q_ARG(QString, QString(sourceName)));
	} else if (strcmp(signal, "source_audio_activate") == 0) {
		if (dock->showOnlyActive && !obs_source_active(source))
			return;
		QMetaObject::invokeMethod(dock, "AddAudioSource", Qt::QueuedConnection, Q_ARG(OBSSource, OBSSource(source)));
	} else if (strcmp(signal, "source_audio_deactivate") == 0) {
		QString sourceName = QT_UTF8(obs_source_get_name(source));
		QMetaObject::invokeMethod(dock, "RemoveAudioControl", Qt::QueuedConnection, Q_ARG(QString, QString(sourceName)));
	}
}

void AudioMonitorDock::OBSFrontendEvent(enum obs_frontend_event event, void *data)
{
	if (event == OBS_FRONTEND_EVENT_PROFILE_CHANGED) {
		auto *dock = static_cast<AudioMonitorDock *>(data);
		QMetaObject::invokeMethod(dock, "UpdateTrackNames", Qt::QueuedConnection);
	} else if (event == OBS_FRONTEND_EVENT_EXIT || event == OBS_FRONTEND_EVENT_SCENE_COLLECTION_CLEANUP) {
		auto *dock = static_cast<AudioMonitorDock *>(data);
		dock->RemoveAllSources();
	}
}

void AudioMonitorDock::UpdateTrackNames()
{
	for (int column = 1; column <= MAX_AUDIO_MIXES; column++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, column);
		if (!item)
			continue;
		auto *l = static_cast<QLabel *>(item->widget());
		l->setText(GetTrackName(column));
	}
}

void AudioMonitorDock::RenameAudioControl(QString new_name, QString prev_name)
{

	int columns = mainLayout->columnCount();

	for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, column);
		if (!item)
			continue;
		auto *l = static_cast<QLabel *>(item->widget());
		if (prev_name == l->objectName()) {
			l->setText(new_name);
			l->setObjectName(new_name);
		}
	}
}

void AudioMonitorDock::AddAudioSource(OBSSource source)
{
	OBSAddAudioSource(this, source);
}

void AudioMonitorDock::moveAudioControl(int fromColumn, int toColumn)
{
	int rows = mainLayout->rowCount();
	for (int row = 0; row < rows; row++) {
		QLayoutItem *item = mainLayout->itemAtPosition(row, fromColumn);
		if (item) {
			mainLayout->removeItem(item);
			if (toColumn < 0) {
				QWidget *w = item->widget();
				delete w;
			} else {
				mainLayout->addItem(item, row, toColumn);
			}
		}
	}
}

void AudioMonitorDock::addAudioControl(obs_source_t *source, int column, obs_source_t *filter)
{
	QString sourceName = QT_UTF8(obs_source_get_name(source));
	auto *nameLabel = new QLabel();
	QFont font = nameLabel->font();
	font.setPointSize(font.pointSize() - 1);
	nameLabel->setWordWrap(true);

	nameLabel->setText(sourceName);
	nameLabel->setFont(font);
	nameLabel->setObjectName(sourceName);
	nameLabel->setAlignment(Qt::AlignCenter);

	mainLayout->addWidget(nameLabel, 0, column);

	auto *audioControl = new AudioControl(obs_source_get_weak_source(source));
	audioControl->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);

	audioControl->ShowOutputMeter(showOutputMeter);
	obs_data_t *priv_settings = obs_source_get_private_settings(source);
	bool hidden = obs_data_get_bool(priv_settings, "mixer_hidden");
	obs_data_release(priv_settings);
	audioControl->ShowOutputSlider(showOutputSlider && !hidden);
	audioControl->ShowSliderNames(showSliderNames);
	mainLayout->addWidget(audioControl, 1, column);
	if (filter)
		addFilter(column, filter);
}

void AudioMonitorDock::OBSFilterAdd(void *data, calldata_t *call_data)
{
	obs_source_t *filter;
	calldata_get_ptr(call_data, "filter", &filter);
	obs_source_t *source;
	calldata_get_ptr(call_data, "source", &source);

	const char *filter_id = obs_source_get_unversioned_id(filter);
	if (strcmp("audio_monitor", filter_id) != 0)
		return;
	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);
	QMetaObject::invokeMethod(dock, "AddFilter", Qt::QueuedConnection, Q_ARG(OBSSource, OBSSource(source)),
				  Q_ARG(OBSSource, OBSSource(filter)));
}

void AudioMonitorDock::AddFilter(OBSSource source, OBSSource filter)
{

	const int columns = mainLayout->columnCount();
	if (columns <= MAX_AUDIO_MIXES + 1) {
		addAudioControl(source, MAX_AUDIO_MIXES + 1, filter);
		return;
	}
	QString sourceName = QT_UTF8(obs_source_get_name(source));
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, i);
		if (item) {
			QWidget *w = item->widget();
			if (sourceName.localeAwareCompare(w->objectName()) == 0) {

				addFilter(i, filter);
				return;
			}
		}
	}

	if (showOnlyActive && !obs_source_active(source))
		return;

	for (int i = columns - 1; i > MAX_AUDIO_MIXES; i--) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, i);
		if (item) {
			QWidget *w = item->widget();
			if (sourceName.localeAwareCompare(w->objectName()) < 0) {
				moveAudioControl(i, i + 1);
			} else {
				addAudioControl(source, i + 1, filter);
				break;
			}
		}
		if (i == MAX_AUDIO_MIXES + 1) {
			addAudioControl(source, i, filter);
		}
	}
}

void AudioMonitorDock::OBSFilterRemove(void *data, calldata_t *call_data)
{
	obs_source_t *filter;
	calldata_get_ptr(call_data, "filter", &filter);
	obs_source_t *source;
	calldata_get_ptr(call_data, "source", &source);

	const char *filter_id = obs_source_get_unversioned_id(filter);
	if (strcmp("audio_monitor", filter_id) != 0)
		return;

	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);
	QString sourceName = QT_UTF8(obs_source_get_name(source));
	QString filterName = QT_UTF8(obs_source_get_name(filter));
	QMetaObject::invokeMethod(dock, "RemoveFilter", Qt::QueuedConnection, Q_ARG(QString, sourceName),
				  Q_ARG(QString, filterName));
}

void AudioMonitorDock::RemoveFilter(QString sourceName, QString filterName)
{
	int columns = mainLayout->columnCount();
	int removed = 0;
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, i);
		if (item) {
			QWidget *w = item->widget();
			if (sourceName.localeAwareCompare(w->objectName()) == 0) {
				item = mainLayout->itemAtPosition(1, i);
				if (!item)
					continue;

				AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
				audioControl->RemoveFilter(filterName);
				if (!audioControl->HasSliders()) {
					moveAudioControl(i, -1);
					removed++;
				}
			} else if (removed > 0) {
				moveAudioControl(i, i - removed);
			}
		}
	}
}

void AudioMonitorDock::RemoveAudioControl(const QString &sourceName)
{
	const int columns = mainLayout->columnCount();
	int removed = 0;
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, i);
		if (item) {
			QWidget *w = item->widget();
			if (sourceName.localeAwareCompare(w->objectName()) == 0) {
				item = mainLayout->itemAtPosition(1, i);
				if (!item)
					continue;

				moveAudioControl(i, -1);
				removed++;
			} else if (removed > 0) {
				moveAudioControl(i, i - removed);
			}
		}
	}
}

void AudioMonitorDock::RemoveAllSources()
{
	const int columns = mainLayout->columnCount();
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = mainLayout->itemAtPosition(0, i);
		if (item) {
			item = mainLayout->itemAtPosition(1, i);
			if (!item)
				continue;

			moveAudioControl(i, -1);
		}
	}
}

void AudioMonitorDock::addFilter(int column, obs_source_t *filter)
{
	QLayoutItem *item = mainLayout->itemAtPosition(1, column);
	if (!item)
		return;

	AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
	audioControl->AddFilter(filter);
}

bool AudioMonitorDock::OBSAddAudioDevice(void *data, const char *name, const char *id)
{
	if (!id || !strlen(id))
		return true;
	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);
	if (!name || !strlen(name)) {
		dock->audioDevices[QT_UTF8(id)] = QT_UTF8(id);
	} else {
		dock->audioDevices[QT_UTF8(id)] = QT_UTF8(name);
	}
	return true;
}

void AudioMonitorDock::ConfigClicked()
{
	QMenu popup;
	auto *a = popup.addAction(QT_UTF8(obs_module_text("MeterOutput")));
	a->setCheckable(true);
	a->setChecked(showOutputMeter);
	connect(a, SIGNAL(triggered()), this, SLOT(MeterOutputChanged()));
	a = popup.addAction(QT_UTF8(obs_module_text("OutputSlider")));
	a->setCheckable(true);
	a->setChecked(showOutputSlider);
	connect(a, SIGNAL(triggered()), this, SLOT(OutputSliderChanged()));
	a = popup.addAction(QT_UTF8(obs_module_text("OnlyActive")));
	a->setCheckable(true);
	a->setChecked(showOnlyActive);
	connect(a, SIGNAL(triggered()), this, SLOT(OnlyActiveChanged()));
	a = popup.addAction(QT_UTF8(obs_module_text("SliderNames")));
	a->setCheckable(true);
	a->setChecked(showSliderNames);
	connect(a, SIGNAL(triggered()), this, SLOT(SliderNamesChanged()));

	auto *outputs = popup.addMenu(QT_UTF8(obs_module_text("Outputs")));
	auto *trackMenu = outputs->addMenu(GetTrackName(-1));
	trackMenu->setProperty("track", -1);
	connect(trackMenu, SIGNAL(aboutToShow()), this, SLOT(LoadTrackMenu()));
	outputs->addSeparator();
	for (int i = 0; i < MAX_AUDIO_MIXES; i++) {
		trackMenu = outputs->addMenu(GetTrackName(i));
		trackMenu->setProperty("track", i);
		connect(trackMenu, SIGNAL(aboutToShow()), this, SLOT(LoadTrackMenu()));
	}

	audioDevices.clear();
	obs_enum_audio_monitoring_devices(OBSAddAudioDevice, this);

	popup.exec(QCursor::pos());
}

void AudioMonitorDock::LoadTrackMenu()
{
	auto *menu = static_cast<QMenu *>(sender());
	if (!menu->isEmpty())
		return;
	int track = menu->property("track").toInt();
	auto *a = menu->addAction(QT_UTF8(obs_module_text("Show")));
	a->setProperty("track", track);
	a->setCheckable(true);
	connect(a, SIGNAL(triggered()), this, SLOT(ShowOutputChanged()));
	AudioOutputControl *output = nullptr;
	const auto count = mainLayout->columnCount();
	if (track == -1) {
		bool checked = true;
		if (count < MAX_AUDIO_MIXES + 1) {
			checked = false;
		} else {
			for (int i = 1; i <= MAX_AUDIO_MIXES; i++) {
				auto *item = mainLayout->itemAtPosition(1, i);
				if (!item) {
					checked = false;
					break;
				}
			}
		}
		a->setChecked(checked);
	} else {
		auto *item = mainLayout->itemAtPosition(1, track + 1);
		if (!item)
			return;
		output = dynamic_cast<AudioOutputControl *>(item->widget());
		a->setChecked(true);
	}
	menu->addSeparator();
	auto d = audioDevices.begin();
	while (d != audioDevices.end()) {
		a = menu->addAction(d.value());
		a->setCheckable(true);
		a->setProperty("track", track);
		a->setProperty("device_id", d.key());
		if (track == -1) {
			bool checked = true;
			if (count < MAX_AUDIO_MIXES + 1) {
				checked = false;
			} else {
				for (int i = 1; i <= MAX_AUDIO_MIXES; i++) {
					auto *item = mainLayout->itemAtPosition(1, i);
					if (!item) {
						checked = false;
						break;
					}
					output = dynamic_cast<AudioOutputControl *>(item->widget());
					if (!output || !output->HasDevice(d.key())) {
						checked = false;
						break;
					}
				}
			}
			a->setChecked(checked);
		} else {
			a->setChecked(output->HasDevice(d.key()));
		}
		connect(a, SIGNAL(triggered()), this, SLOT(OutputDeviceChanged()));
		++d;
	}
}

void AudioMonitorDock::ShowOutputChanged()
{
	auto *a = static_cast<QAction *>(sender());
	bool checked = a->isChecked();
	int track = a->property("track").toInt();
	if (track == -1) {

		for (int i = 0; i < MAX_AUDIO_MIXES; i++) {
			if (checked) {
				auto *item = mainLayout->itemAtPosition(1, i + 1);
				if (item)
					continue;
				addOutputTrack(i);
			} else {
				moveAudioControl(i + 1, -1);
			}
		}

	} else {
		if (checked) {
			auto *item = mainLayout->itemAtPosition(1, track + 1);
			if (item)
				return;
			addOutputTrack(track);
		} else {
			moveAudioControl(track + 1, -1);
		}
	}
}

void AudioMonitorDock::OutputDeviceChanged()
{
	auto *a = static_cast<QAction *>(sender());
	bool checked = a->isChecked();
	int track = a->property("track").toInt();
	QString device_id = a->property("device_id").toString();
	if (track == -1) {
		for (int i = 1; i <= MAX_AUDIO_MIXES; i++) {
			auto *item = mainLayout->itemAtPosition(1, i);
			if (!item)
				continue;
			const auto control = dynamic_cast<AudioOutputControl *>(item->widget());
			if (checked) {
				control->AddDevice(device_id, a->text());
			} else {
				control->RemoveDevice(device_id);
			}
		}
	} else {
		auto *item = mainLayout->itemAtPosition(1, track + 1);
		if (!item)
			return;
		const auto control = dynamic_cast<AudioOutputControl *>(item->widget());
		if (checked) {
			control->AddDevice(device_id, a->text());
		} else {
			control->RemoveDevice(device_id);
		}
	}
}

void AudioMonitorDock::MeterOutputChanged()
{
	QAction *a = static_cast<QAction *>(sender());
	showOutputMeter = a->isChecked();
	const int columns = mainLayout->columnCount();
	for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
		QLayoutItem *item = mainLayout->itemAtPosition(1, column);
		if (item) {
			AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
			audioControl->ShowOutputMeter(showOutputMeter);
		}
	}
}

void AudioMonitorDock::OutputSliderChanged()
{
	QAction *a = static_cast<QAction *>(sender());
	showOutputSlider = a->isChecked();
	if (showOutputSlider) {
		obs_enum_sources(OBSAddAudioSource, this);
	} else {
		const int columns = mainLayout->columnCount();
		int removed = 0;
		for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
			QLayoutItem *item = mainLayout->itemAtPosition(1, column);
			if (item) {
				AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
				audioControl->ShowOutputSlider(showOutputSlider);
				if (!audioControl->HasSliders()) {
					moveAudioControl(column, -1);
					removed++;
				} else if (removed > 0) {
					moveAudioControl(column, column - removed);
				}
			}
		}
	}
}

void AudioMonitorDock::SliderNamesChanged()
{
	QAction *a = static_cast<QAction *>(sender());
	showSliderNames = a->isChecked();
	const int columns = mainLayout->columnCount();
	for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
		QLayoutItem *item = mainLayout->itemAtPosition(1, column);
		if (item) {
			AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
			audioControl->ShowSliderNames(showSliderNames);
		}
	}
}

void AudioMonitorDock::OBSFilterAdd(obs_source_t *source, obs_source_t *filter, void *data)
{
	const char *filter_id = obs_source_get_unversioned_id(filter);
	if (strcmp("audio_monitor", filter_id) != 0)
		return;

	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);
	QString sourceName = QT_UTF8(obs_source_get_name(source));
	const int columns = dock->mainLayout->columnCount();
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = dock->mainLayout->itemAtPosition(0, i);
		if (item) {
			QWidget *w = item->widget();
			if (sourceName.localeAwareCompare(w->objectName()) == 0) {

				dock->addFilter(i, filter);
				return;
			}
		}
	}
}

bool AudioMonitorDock::OBSAddAudioSource(void *data, obs_source_t *source)
{
	const uint32_t flags = obs_source_get_output_flags(source);
	if ((flags & OBS_SOURCE_AUDIO) == 0)
		return true;
	AudioMonitorDock *dock = static_cast<AudioMonitorDock *>(data);
	QString sourceName = QT_UTF8(obs_source_get_name(source));
	int columns = dock->mainLayout->columnCount();
	for (int i = MAX_AUDIO_MIXES + 1; i < columns; i++) {
		QLayoutItem *item = dock->mainLayout->itemAtPosition(0, i);
		if (!item)
			continue;
		QWidget *w = item->widget();
		if (sourceName == w->objectName()) {
			item = dock->mainLayout->itemAtPosition(1, i);
			AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
			obs_data_t *priv_settings = obs_source_get_private_settings(source);
			bool hidden = obs_data_get_bool(priv_settings, "mixer_hidden");
			obs_data_release(priv_settings);
			audioControl->ShowOutputSlider(dock->showOutputSlider && !hidden);
			if (!dock->showOutputSlider || hidden)
				dock->RemoveSourcesWithoutSliders();
			return true;
		}
	}
	if (dock->showOnlyActive && !obs_source_active(source))
		return true;
	if (columns <= MAX_AUDIO_MIXES + 1) {
		dock->addAudioControl(source, MAX_AUDIO_MIXES + 1, nullptr);
	} else {
		for (int i = columns - 1; i > MAX_AUDIO_MIXES; i--) {
			QLayoutItem *item = dock->mainLayout->itemAtPosition(0, i);
			if (item) {
				QWidget *w = item->widget();
				if (sourceName.localeAwareCompare(w->objectName()) < 0) {
					dock->moveAudioControl(i, i + 1);
				} else {
					dock->addAudioControl(source, i + 1, nullptr);
					break;
				}
			}
			if (i == MAX_AUDIO_MIXES + 1) {
				dock->addAudioControl(source, i, nullptr);
			}
		}
	}
	obs_source_enum_filters(source, OBSFilterAdd, data);
	dock->RemoveSourcesWithoutSliders();
	return true;
}

void AudioMonitorDock::RemoveSourcesWithoutSliders()
{
	const int columns = mainLayout->columnCount();
	int removed = 0;
	for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
		QLayoutItem *item = mainLayout->itemAtPosition(1, column);
		if (!item)
			continue;
		AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
		if (!audioControl->HasSliders()) {
			moveAudioControl(column, -1);
			removed++;
		} else if (removed > 0) {
			moveAudioControl(column, column - removed);
		}
	}
}

void AudioMonitorDock::OnlyActiveChanged()
{
	QAction *a = static_cast<QAction *>(sender());
	showOnlyActive = a->isChecked();
	if (showOnlyActive) {
		int columns = mainLayout->columnCount();
		int removed = 0;
		for (int column = MAX_AUDIO_MIXES + 1; column < columns; column++) {
			QLayoutItem *item = mainLayout->itemAtPosition(1, column);
			if (!item)
				continue;
			AudioControl *audioControl = static_cast<AudioControl *>(item->widget());
			obs_source_t *s = obs_weak_source_get_source(audioControl->GetSource());
			if (s) {
				if (!obs_source_active(s)) {
					moveAudioControl(column, -1);
					removed++;
				} else if (removed > 0) {
					moveAudioControl(column, column - removed);
				}
				obs_source_release(s);
			} else if (removed > 0) {
				moveAudioControl(column, column - removed);
			}
		}
	} else {
		obs_enum_sources(OBSAddAudioSource, this);
	}
}

QString AudioMonitorDock::GetTrackName(int i)
{
	if (i == -1)
		return QT_UTF8(obs_module_text("All"));

	QString trackName = QT_UTF8("Track") + QString::number(i + 1) + QT_UTF8("Name");
	trackName = QT_UTF8(config_get_string(obs_frontend_get_profile_config(), "AdvOut", QT_TO_UTF8(trackName)));
	if (trackName.isEmpty()) {
		trackName = QT_UTF8(obs_module_text("Track"));
		trackName += " ";
		trackName += QString::number(i + 1);
	}
	return trackName;
}

void AudioMonitorDock::addOutputTrack(int i, obs_data_t *obs_data)
{
	auto *control = new AudioOutputControl(i, obs_data);
	control->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Expanding);
	mainLayout->addWidget(control, 1, i + 1);
	auto *nameLabel = new QLabel();
	QFont font = nameLabel->font();
	font.setPointSize(font.pointSize() - 1);
	nameLabel->setWordWrap(true);

	nameLabel->setText(GetTrackName(i));
	nameLabel->setFont(font);
	nameLabel->setAlignment(Qt::AlignCenter);

	mainLayout->addWidget(nameLabel, 0, i + 1);
}

void HScrollArea::resizeEvent(QResizeEvent *event)
{
	if (!!widget())
		widget()->setMaximumHeight(event->size().height());

	QScrollArea::resizeEvent(event);
}