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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* main.cpp - cam - The libcamera swiss army knife
*/
#include <iostream>
#include <map>
#include <signal.h>
#include <string.h>
#include <libcamera/libcamera.h>
#include "event_loop.h"
#include "options.h"
using namespace libcamera;
OptionsParser::Options options;
enum {
OptCamera = 'c',
OptHelp = 'h',
OptList = 'l',
};
EventLoop *loop;
void signalHandler(int signal)
{
std::cout << "Exiting" << std::endl;
loop->exit();
}
static int parseOptions(int argc, char *argv[])
{
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(OptList, OptionNone, "List all cameras", "list");
options = parser.parse(argc, argv);
if (!options.valid())
return -EINVAL;
if (argc == 1 || options.isSet(OptHelp)) {
parser.usage();
return 1;
}
return 0;
}
int main(int argc, char **argv)
{
int ret;
ret = parseOptions(argc, argv);
if (ret < 0)
return EXIT_FAILURE;
CameraManager *cm = CameraManager::instance();
ret = cm->start();
if (ret) {
std::cout << "Failed to start camera manager: "
<< strerror(-ret) << std::endl;
return EXIT_FAILURE;
}
if (options.isSet(OptList)) {
std::cout << "Available cameras:" << std::endl;
for (const std::shared_ptr<Camera> &camera : cm->cameras())
std::cout << "- " << camera->name() << std::endl;
}
if (options.isSet(OptCamera)) {
std::shared_ptr<Camera> cam = cm->get(options[OptCamera]);
if (cam) {
std::cout << "Using camera " << cam->name() << std::endl;
} else {
std::cout << "Camera " << options[OptCamera]
<< " not found" << std::endl;
}
}
loop = new EventLoop(cm->eventDispatcher());
struct sigaction sa = {};
sa.sa_handler = &signalHandler;
sigaction(SIGINT, &sa, nullptr);
ret = loop->exec();
delete loop;
cm->stop();
return ret;
}
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