1 files changed, 83 insertions, 0 deletions
diff --git a/spa/plugins/bluez5/dbus-monitor.h b/spa/plugins/bluez5/dbus-monitor.h
new file mode 100644
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+++ b/spa/plugins/bluez5/dbus-monitor.h
@@ -0,0 +1,83 @@
+/* Spa midi dbus
+ *
+ * Copyright © 2022 Pauli Virtanen
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+#ifndef DBUS_MONITOR_H_
+#define DBUS_MONITOR_H_
+
+#include <gio/gio.h>
+
+#include <spa/utils/defs.h>
+#include <spa/utils/string.h>
+#include <spa/support/log.h>
+
+#define DBUS_MONITOR_MAX_TYPES	16
+
+struct dbus_monitor;
+
+struct dbus_monitor_proxy_type
+{
+	/** Interface name to monitor, or NULL for object type */
+	const char *interface_name;
+
+	/** GObject type for the proxy */
+	GType proxy_type;
+
+	/** Hook called when object added or properties changed */
+	void (*on_update)(struct dbus_monitor *monitor, GDBusInterface *iface);
+
+	/** Hook called when object is removed (or on monitor shutdown) */
+	void (*on_remove)(struct dbus_monitor *monitor, GDBusInterface *iface);
+};
+
+struct dbus_monitor
+{
+	GDBusObjectManagerClient *manager;
+	struct spa_log *log;
+	GCancellable *call;
+	struct dbus_monitor_proxy_type proxy_types[DBUS_MONITOR_MAX_TYPES+1];
+	void (*on_name_owner_change)(struct dbus_monitor *monitor);
+	void *user_data;
+};
+
+static inline GDBusObjectManager *dbus_monitor_manager(struct dbus_monitor *monitor)
+{
+	return G_DBUS_OBJECT_MANAGER(monitor->manager);
+}
+
+/**
+ * Create a DBus object monitor, with a given interface to proxy type map.
+ *
+ * \param proxy_types	Mapping between interface names and watched proxy
+ * 	types, terminated by G_TYPE_INVALID.
+ * \param on_object_update	Called for all objects and interfaces on
+ *	startup, and when object properties are modified.
+ */
+void dbus_monitor_init(struct dbus_monitor *monitor,
+		GType client_type, struct spa_log *log, GDBusConnection *conn,
+		const char *name, const char *object_path,
+		const struct dbus_monitor_proxy_type *proxy_types,
+		void (*on_name_owner_change)(struct dbus_monitor *monitor));
+
+void dbus_monitor_clear(struct dbus_monitor *monitor);
+
+#endif DBUS_MONITOR_H_