Merge pipewire-jack subtree

pipewire-jack/src/metadata.c

@@ -0,0 +1,173 @@
+/* PipeWire
+ * Copyright (C) 2018 Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <jack/metadata.h>
+#include <jack/uuid.h>
+
+#include <pipewire/pipewire.h>
+
+
+static struct pw_properties * get_properties(void)
+{
+	static struct pw_properties *properties = NULL;
+	if (properties == NULL) {
+		properties = pw_properties_new(NULL, NULL);
+	}
+	return properties;
+}
+
+static void make_key(char *dst, jack_uuid_t subject, const char *key, int keylen)
+{
+	int len;
+	jack_uuid_unparse (subject, dst);
+	len = strlen(dst);
+	dst[len] = '@';
+	memcpy(&dst[len+1], key, keylen+1);
+}
+
+SPA_EXPORT
+int jack_set_property(jack_client_t*client,
+		      jack_uuid_t subject,
+		      const char* key,
+		      const char* value,
+		      const char* type)
+{
+	int keylen = strlen(key);
+	char *dst = alloca(JACK_UUID_STRING_SIZE + keylen);
+	struct pw_properties * props = get_properties();
+
+	make_key(dst, subject, key, keylen);
+
+	pw_properties_setf(props, dst, "%s@%s", value, type);
+	pw_log_debug("set '%s' to '%s@%s'", dst, value, type);
+
+	return 0;
+}
+
+SPA_EXPORT
+int jack_get_property(jack_uuid_t subject,
+		      const char* key,
+		      char**      value,
+		      char**      type)
+{
+	int keylen = strlen(key);
+	char *dst = alloca(JACK_UUID_STRING_SIZE + keylen);
+	struct pw_properties * props = get_properties();
+	const char *str, *at;
+
+	make_key(dst, subject, key, keylen);
+
+	if ((str = pw_properties_get(props, dst)) == NULL) {
+		pw_log_warn("no property '%s'", dst);
+		return -1;
+	}
+
+	at = strrchr(str, '@');
+	if (at == NULL) {
+		pw_log_warn("property '%s' invalid value '%s'", dst, str);
+		return -1;
+	}
+
+	*value = strndup(str, at - str);
+	*type = strdup(at + 1);
+
+	pw_log_debug("got '%s' with value:'%s' type:'%s'", dst, *value, *type);
+
+	return 0;
+}
+
+SPA_EXPORT
+void jack_free_description (jack_description_t* desc, int free_description_itself)
+{
+	pw_log_warn("not implemented");
+}
+
+SPA_EXPORT
+int jack_get_properties (jack_uuid_t         subject,
+			 jack_description_t* desc)
+{
+	pw_log_warn("not implemented");
+	return -1;
+}
+
+SPA_EXPORT
+int jack_get_all_properties (jack_description_t** descs)
+{
+	pw_log_warn("not implemented");
+	return -1;
+}
+
+SPA_EXPORT
+int jack_remove_property (jack_client_t* client, jack_uuid_t subject, const char* key)
+{
+	int keylen = strlen(key);
+	char *dst = alloca(JACK_UUID_STRING_SIZE + keylen);
+	struct pw_properties * props = get_properties();
+
+	make_key(dst, subject, key, keylen);
+
+	pw_properties_set(props, dst, NULL);
+	pw_log_debug("removed %s", dst);
+
+	return 0;
+}
+
+SPA_EXPORT
+int jack_remove_properties (jack_client_t* client, jack_uuid_t subject)
+{
+	pw_log_warn("not implemented");
+	return -1;
+}
+
+SPA_EXPORT
+int jack_remove_all_properties (jack_client_t* client)
+{
+	pw_log_warn("not implemented");
+	return -1;
+}
+
+SPA_EXPORT
+int jack_set_property_change_callback (jack_client_t*             client,
+                                       JackPropertyChangeCallback callback,
+                                       void*                      arg)
+{
+	pw_log_warn("not implemented");
+	return -1;
+}
+
+SPA_EXPORT
+const char* JACK_METADATA_PRETTY_NAME = "http://jackaudio.org/metadata/pretty-name";
+SPA_EXPORT
+const char* JACK_METADATA_HARDWARE = "http://jackaudio.org/metadata/hardware";
+SPA_EXPORT
+const char* JACK_METADATA_CONNECTED = "http://jackaudio.org/metadata/connected";
+SPA_EXPORT
+const char* JACK_METADATA_PORT_GROUP = "http://jackaudio.org/metadata/port-group";
+SPA_EXPORT
+const char* JACK_METADATA_ICON_SMALL = "http://jackaudio.org/metadata/icon-small";
+SPA_EXPORT
+const char* JACK_METADATA_ICON_LARGE = "http://jackaudio.org/metadata/icon-large";