1 files changed, 92 insertions, 0 deletions
diff --git a/src/modules/module-metadata/proxy-metadata.c b/src/modules/module-metadata/proxy-metadata.c
new file mode 100644
index 0000000..e8b747f
--- /dev/null
+++ b/src/modules/module-metadata/proxy-metadata.c
@@ -0,0 +1,92 @@
+/* PipeWire
+ *
+ * Copyright © 2019 Wim Taymans
+ *
+ * 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.
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <spa/pod/parser.h>
+
+#include "pipewire/pipewire.h"
+#include "pipewire/extensions/metadata.h"
+
+struct object_data {
+	struct pw_metadata *object;
+	struct spa_hook object_listener;
+	struct spa_hook object_methods;
+
+        struct pw_proxy *proxy;
+	struct spa_hook proxy_listener;
+};
+
+static void proxy_object_destroy(void *_data)
+{
+	struct object_data *data = _data;
+	spa_hook_remove(&data->proxy_listener);
+	spa_hook_remove(&data->object_listener);
+	spa_hook_remove(&data->object_methods);
+}
+
+static const struct pw_proxy_events proxy_events = {
+	PW_VERSION_PROXY_EVENTS,
+	.destroy = proxy_object_destroy,
+};
+
+struct pw_proxy *pw_core_metadata_export(struct pw_core *core,
+		const char *type, const struct spa_dict *props, void *object,
+		size_t user_data_size)
+{
+	struct pw_metadata *meta = object;
+	struct spa_interface *iface, *miface;
+	struct pw_proxy *proxy;
+	struct object_data *data;
+
+	proxy = pw_core_create_object(core,
+				    "metadata",
+				    PW_TYPE_INTERFACE_Metadata,
+				    PW_VERSION_METADATA,
+				    props,
+				    user_data_size + sizeof(struct object_data));
+        if (proxy == NULL)
+		return NULL;
+
+	data = pw_proxy_get_user_data(proxy);
+	data = SPA_PTROFF(data, user_data_size, struct object_data);
+	data->object = object;
+	data->proxy = proxy;
+
+	iface = (struct spa_interface*)proxy;
+	miface = (struct spa_interface*)meta;
+
+	pw_proxy_install_marshal(proxy, true);
+
+	pw_proxy_add_listener(proxy, &data->proxy_listener, &proxy_events, data);
+
+	pw_proxy_add_object_listener(proxy, &data->object_methods,
+			miface->cb.funcs, miface->cb.data);
+	pw_metadata_add_listener(meta, &data->object_listener,
+			iface->cb.funcs, iface->cb.data);
+
+	return proxy;
+}