lcameraDev: Add session mgr lib for libcamera device binding

commonLibs/lcameraDev/tools/lcameraDevProbe.cpp

@@ -0,0 +1,78 @@
+#include <boostAsioLinkageFix.h>
+
+#include <lcameraDev.h>
+#include <probeRunner.h>
+#include <iostream>
+#include <spinscale/co/nonViralTaskNursery.h>
+#include <string>
+
+namespace {
+
+sscl::co::NonViralNonPostingInvoker probeSelectorCInd(
+	std::exception_ptr& exceptionStorage,
+	std::function<void()> callerLambda,
+	const std::string& deviceSelector)
+{
+	(void)exceptionStorage;
+	(void)callerLambda;
+
+	const lcamera_dev::LcameraDevGetOrCreateResult createResult =
+		co_await lcameraDev_getOrCreateDeviceCReq(deviceSelector);
+
+	std::cout << "lcameraDev_probe: opened session for camera id="
+		<< createResult.resolvedIdentity.id << '\n';
+
+	co_await lcameraDev_releaseDeviceCReq(createResult.deviceSession);
+
+	std::cout << "lcameraDev_probe: released session\n";
+	co_return;
+}
+
+void runProbe(
+	const std::shared_ptr<sscl::ComponentThread>& componentThread,
+	const std::string& deviceSelector)
+{
+	lcameraDev_main(componentThread);
+
+	sscl::co::NonViralTaskNursery nursery;
+	nursery.openAdmission();
+	nursery.launch(
+		[deviceSelector](sscl::co::NonViralTaskNursery::Slot::Lease& lease)
+		{
+			return probeSelectorCInd(
+				lease.getExceptionStorage(),
+				lease.getCallerLambda(),
+				deviceSelector);
+		});
+	nursery.closeAdmission();
+	nursery.syncAwaitAllSettlements(componentThread->getIoContext());
+
+	lcameraDev_exit();
+}
+
+} // namespace
+
+int main(int argc, char* argv[])
+{
+	if (argc < 2)
+	{
+		std::cerr << "Usage: lcameraDev_probe <deviceSelector>\n";
+		return 1;
+	}
+
+	try {
+		const std::string deviceSelector = argv[1];
+
+		lcamera_dev_probe::runOnComponentThread(
+			[&](const std::shared_ptr<sscl::ComponentThread>& componentThread)
+			{
+				runProbe(componentThread, deviceSelector);
+			});
+
+		return 0;
+	}
+	catch (const std::exception& exc) {
+		std::cerr << "lcameraDev_probe: " << exc.what() << '\n';
+		return 1;
+	}
+}