libcamera/vivid.git - libcamera pipeline handler for VIVID

path: root/src/apps/common/event_loop.cpp

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * main.cpp - qcam - The libcamera GUI test application
 */

#include <signal.h>
#include <string.h>

#include <QApplication>
#include <QtDebug>

#include <libcamera/camera_manager.h>

#include "../common/options.h"
#include "../common/stream_options.h"

#include "main_window.h"
#include "message_handler.h"

using namespace libcamera;

void signalHandler([[maybe_unused]] int signal)
{
	qInfo() << "Exiting";
	qApp->quit();
}

OptionsParser::Options parseOptions(int argc, char *argv[])
{
	StreamKeyValueParser streamKeyValue;

	OptionsParser parser;
	parser.addOption(OptCamera, OptionString,
			 "Specify which camera to operate on", "camera",
			 ArgumentRequired, "camera");
	parser.addOption(OptHelp, OptionNone, "Display this help message",
			 "help");
	parser.addOption(OptRenderer, OptionString,
			 "Choose the renderer type {qt,gles} (default: qt)",
			 "renderer", ArgumentRequired, "renderer");
	parser.addOption(OptStream, &streamKeyValue,
			 "Set configuration of a camera stream", "stream", true);
	parser.addOption(OptVerbose, OptionNone,
			 "Print verbose log messages", "verbose");

	OptionsParser::Options options = parser.parse(argc, argv);
	if (options.isSet(OptHelp))
		parser.usage();

	return options;
}

int main(int argc, char **argv)
{
	QApplication app(argc, argv);
	int ret;

	OptionsParser::Options options = parseOptions(argc, argv);
	if (!options.valid())
		return EXIT_FAILURE;
	if (options.isSet(OptHelp))
		return 0;

	MessageHandler msgHandler(options.isSet(OptVerbose));

	struct sigaction sa = {};
	sa.sa_handler = &signalHandler;
	sigaction(SIGINT, &sa, nullptr);

	CameraManager *cm = new libcamera::CameraManager();

	ret = cm->start();
	if (ret) {
		qInfo() << "Failed to start camera manager:"
			<< strerror(-ret);
		return EXIT_FAILURE;


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