index : libcamera/vivid.git	pobrn/rebase vivid
	libcamera pipeline handler for VIVID	git repository hosting on libcamera.org

summaryrefslogtreecommitdiff

log msg author committer range

path: root/package/gentoo/media-libs

Age	Commit message (Expand)	Author
2019-10-05	libcamera: controls: Auto-generate control_ids.h and control_ids.cpp	Laurent Pinchart
2019-05-02	package: gentoo: Add libcamera ebuild	Jacopo Mondi

generated by cgit v1.2.1 (git 2.18.0) at 2024-12-23 00:34:36 +0000

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * main_window.cpp - qcam - Main application window
 */

#include "main_window.h"

#include <iomanip>
#include <string>
#include <sys/mman.h>

#include <QComboBox>
#include <QCoreApplication>
#include <QFileDialog>
#include <QImage>
#include <QImageWriter>
#include <QInputDialog>
#include <QMutexLocker>
#include <QStandardPaths>
#include <QTimer>
#include <QToolBar>
#include <QToolButton>
#include <QtDebug>

#include <libcamera/camera_manager.h>
#include <libcamera/version.h>

#include "dng_writer.h"
#ifndef QT_NO_OPENGL
#include "viewfinder_gl.h"
#endif
#include "viewfinder_qt.h"

using namespace libcamera;

#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
/*
 * Qt::fixed was introduced in v5.14, and ::fixed deprecated in v5.15. Allow
 * usage of Qt::fixed unconditionally.
 */
namespace Qt {
constexpr auto fixed = ::fixed;
} /* namespace Qt */
#endif

/**
 * \brief Custom QEvent to signal capture completion
 */
class CaptureEvent : public QEvent
{
public:
	CaptureEvent()
		: QEvent(type())
	{
	}

	static Type type()
	{
		static int type = QEvent::registerEventType();
		return static_cast<Type>(type);
	}
};

/**
 * \brief Custom QEvent to signal hotplug or unplug
 */
class HotplugEvent : public QEvent
{
public:
	enum PlugEvent {
		HotPlug,
		HotUnplug
	};

	HotplugEvent(std::shared_ptr<Camera> camera, PlugEvent event)
		: QEvent(type()), camera_(std::move(camera)), plugEvent_(event)
	{
	}

	static Type type()
	{
		static int type = QEvent::registerEventType();
		return static_cast<Type>(type);
	}

	PlugEvent hotplugEvent() const { return plugEvent_; }
	Camera *camera() const { return camera_.get(); }

private:
	std::shared_ptr<Camera> camera_;
	PlugEvent plugEvent_;
};

MainWindow::MainWindow(CameraManager *cm, const OptionsParser::Options &options)
	: saveRaw_(nullptr), options_(options), cm_(cm), allocator_(nullptr),
	  isCapturing_(false), captureRaw_(false)
{
	int ret;

	/*
	 * Initialize the UI: Create the toolbar, set the window title and
	 * create the viewfinder widget.
	 */
	createToolbars();

	title_ = "QCam " + QString::fromStdString(CameraManager::version());
	setWindowTitle(title_);
	connect(&titleTimer_, SIGNAL(timeout()), this, SLOT(updateTitle()));

	/* Renderer type Qt or GLES, select Qt by default. */
	std::string renderType = "qt";
	if (options_.isSet(OptRenderer))
		renderType = options_[OptRenderer].toString();

	if (renderType == "qt") {
		ViewFinderQt *viewfinder = new ViewFinderQt(this);
		connect(viewfinder, &ViewFinderQt::renderComplete,
			this, &MainWindow::queueRequest);
		viewfinder_ = viewfinder;
		setCentralWidget(viewfinder);
#ifndef QT_NO_OPENGL
	} else if (renderType == "gles") {
		ViewFinderGL *viewfinder = new ViewFinderGL(this);
		connect(viewfinder, &ViewFinderGL::renderComplete,
			this, &MainWindow::queueRequest);
		viewfinder_ = viewfinder;
		setCentralWidget(viewfinder);
#endif
	} else {
		qWarning() << "Invalid render type"
			   << QString::fromStdString(renderType);
		quit();
		return;
	}

	adjustSize();

	/* Hotplug/unplug support */
	cm_->cameraAdded.connect(this, &MainWindow::addCamera);
	cm_->cameraRemoved.connect(this, &MainWindow::removeCamera);

	/* Open the camera and start capture. */
	ret = openCamera();
	if (ret < 0) {
		quit();
		return;
	}

	startStopAction_->setChecked(true);
}

MainWindow::~MainWindow()
{
	if (camera_) {
		stopCapture();
		camera_->release();
		camera_.reset();
	}
}

bool MainWindow::event(QEvent *e)
{
	if (e->type() == CaptureEvent::type()) {
		processCapture();
		return true;
	} else if (e->type() == HotplugEvent::type()) {
		processHotplug(static_cast<HotplugEvent *>(e));
		return true;
	}

	return QMainWindow::event(e);
}

int MainWindow::createToolbars()
{
	QAction *action;

	toolbar_ = addToolBar("Main");

	/* Disable right click context menu. */
	toolbar_->setContextMenuPolicy(Qt::PreventContextMenu);

	/* Quit action. */
	action = toolbar_->addAction(QIcon::fromTheme("application-exit",
						      QIcon(":x-circle.svg")),
				     "Quit");
	action->setShortcut(Qt::CTRL | Qt::Key_Q);
	connect(action, &QAction::triggered, this, &MainWindow::quit);

	/* Camera selector. */
	cameraCombo_ = new QComboBox();
	connect(cameraCombo_, QOverload<int>::of(&QComboBox::activated),
		this, &MainWindow::switchCamera);

	for (const std::shared_ptr<Camera> &cam : cm_->cameras())
		cameraCombo_->addItem(QString::fromStdString(cam->id()));

	toolbar_->addWidget(cameraCombo_);

	toolbar_->addSeparator();

	/* Start/Stop action. */
	iconPlay_ = QIcon::fromTheme("media-playback-start",
				     QIcon(":play-circle.svg"));
	iconStop_ = QIcon::fromTheme("media-playback-stop",
				     QIcon(":stop-circle.svg"));

	action = toolbar_->addAction(iconPlay_, "Start Capture");
	action->setCheckable(true);
	action->setShortcut(Qt::Key_Space);
	connect(action, &QAction::toggled, this, &MainWindow::toggleCapture);
	startStopAction_ = action;

	/* Save As... action. */
	action = toolbar_->addAction(QIcon::fromTheme("document-save-as",
						      QIcon(":save.svg")),
				     "Save As...");
	action->setShortcut(QKeySequence::SaveAs);
	connect(action, &QAction::triggered, this, &MainWindow::saveImageAs);

#ifdef HAVE_DNG
	/* Save Raw action. */
	action = toolbar_->addAction(QIcon::fromTheme("camera-photo",
						      QIcon(":aperture.svg")),
				     "Save Raw");
	action->setEnabled(false);
	connect(action, &QAction::triggered, this, &MainWindow::captureRaw);
	saveRaw_ = action;
#endif

	return 0;
}

void MainWindow::quit()
{
	QTimer::singleShot(0, QCoreApplication::instance(),
			   &QCoreApplication::quit);
}

void MainWindow::updateTitle()
{
	/* Calculate the average frame rate over the last period. */
	unsigned int duration = frameRateInterval_.elapsed();
	unsigned int frames = framesCaptured_ - previousFrames_;
	double fps = frames * 1000.0 / duration;

	/* Restart counters. */
	frameRateInterval_.start();
	previousFrames_ = framesCaptured_;

	setWindowTitle(title_ + " : " + QString::number(fps, 'f', 2) + " fps");
}

/* -----------------------------------------------------------------------------
 * Camera Selection
 */

void MainWindow::switchCamera(int index)
{
	/* Get and acquire the new camera. */
	const auto &cameras = cm_->cameras();
	if (static_cast<unsigned int>(index) >= cameras.size())
		return;

	const std::shared_ptr<Camera> &cam = cameras[index];

	if (cam->acquire()) {
		qInfo() << "Failed to acquire camera" << cam->id().c_str();
		return;
	}

	qInfo() << "Switching to camera" << cam->id().c_str();

	/*
	 * Stop the capture session, release the current camera, replace it with
	 * the new camera and start a new capture session.
	 */
	startStopAction_->setChecked(false);

	camera_->release();
	camera_ = cam;

	startStopAction_->setChecked(true);
}

std::string MainWindow::chooseCamera()
{
	QStringList cameras;
	bool result;

	/* If only one camera is available, use it automatically. */
	if (cm_->cameras().size() == 1)
		return cm_->cameras()[0]->id();

	/* Present a dialog box to pick a camera. */
	for (const std::shared_ptr<Camera> &cam : cm_->cameras())
		cameras.append(QString::fromStdString(cam->id()));

	QString id = QInputDialog::getItem(this, "Select Camera",