Add time to the sensor list widget, also broadcast and recive the time of a sensor

src/pipewire.cpp

@@ -0,0 +1,72 @@
+#include "pipewire.h"
+#include <stdexcept>
+#include <QDebug>
+
+static const struct pw_registry_events registry_events = {
+	.version = PW_VERSION_REGISTRY_EVENTS,
+	.global = &PipeWireHandler::registryEventHandler,
+	.global_remove = nullptr
+};
+
+PipeWireHandler::PipeWireHandler()
+{
+	loop = pw_thread_loop_new("SHinterface", nullptr);
+	if(!loop)
+		throw std::runtime_error("Could not create pipewire main loop");
+
+	context = pw_context_new(pw_thread_loop_get_loop(loop), nullptr, 0);
+	if(!context)
+		throw std::runtime_error("Could not create pipewire context");
+
+	core = pw_context_connect(context, NULL, 0);
+	if(!core)
+		throw std::runtime_error("Could not connect to pipewire");
+
+	registry = pw_core_get_registry(core, PW_VERSION_REGISTRY, 0);
+	if(!registry)
+		throw std::runtime_error("Could not get pipewire registry");
+
+	spa_zero(registryListener);
+	pw_registry_add_listener(registry, &registryListener, &registry_events, this);
+}
+
+bool PipeWireHandler::startLoop()
+{
+	if(!loop || !context || !core || !registry)
+		return false;
+	int ret = pw_thread_loop_start(loop);
+	return ret == 0;
+}
+
+struct pw_registry* PipeWireHandler::getRegistry()
+{
+	return registry;
+}
+
+void PipeWireHandler::registryEventHandler(void *data, uint32_t id,
+                                           uint32_t permissions, const char *type, uint32_t version,
+                                           const struct spa_dict *props)
+{
+	(void)permissions;
+	(void)version;
+
+	PipeWireHandler* handler = static_cast<PipeWireHandler*>(data);
+
+	if(std::string(type) == PW_TYPE_INTERFACE_Node)
+	{
+		const struct spa_dict_item *item = spa_dict_lookup_item(props, "node.name");
+		if(item)
+		{
+			qDebug()<<"got new pipewire node:"<<id<<"name:"<<item->value;
+			handler->nodeAdded({id, item->value});
+		}
+	}
+}
+
+PipeWireHandler::~PipeWireHandler()
+{
+	pw_core_disconnect(core);
+	pw_context_destroy(context);
+	pw_thread_loop_stop(loop);
+}
+