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-rw-r--r--slv2/model.h166
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+/* SLV2
+ * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU 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 General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef __SLV2_MODEL_H__
+#define __SLV2_MODEL_H__
+
+#include <slv2/pluginlist.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/** \defgroup model Data model loading
+ *
+ * These functions deal with the data model which other SLV2 methods
+ * operate with. The data model is LV2 data loaded from bundles, from
+ * which you can query plugins, etc.
+ *
+ * Normal hosts which just want to easily load plugins by URI are strongly
+ * recommended to simply find all installed data in the recommended way with
+ * \ref slv2_model_load_all rather than find and load bundles manually.
+ *
+ * Functions are provided for hosts that wish to access bundles explicitly and
+ * individually for some reason, this is intended for hosts which are tied to
+ * a specific bundle (shipped with the application).
+ *
+ * @{
+ */
+
+
+/** Create a new, empty model.
+ */
+SLV2Model
+slv2_model_new();
+
+
+/** Destroy a model.
+ *
+ * NB: Destroying a model will leave dangling references in any plugin lists,
+ * plugins, etc. Do not destroy a model until you are finished with all
+ * objects that came from it.
+ */
+void
+slv2_model_free(SLV2Model model);
+
+
+/** Load all installed LV2 bundles on the system
+ *
+ * This is the recommended way for hosts to load LV2 data. It does the most
+ * reasonable thing to find all installed plugins, extensions, etc. on the
+ * system. The environment variable LV2_PATH may be used to set the
+ * directories inside which this function will look for bundles. Otherwise
+ * a sensible, standard default will be used.
+ *
+ * Use of other functions for loading bundles is \em highly discouraged
+ * without a special reason to do so - use this one.
+ */
+void
+slv2_model_load_all(SLV2Model model);
+
+
+/** Load all bundles found in \a search_path.
+ *
+ * \param search_path A colon-delimited list of directories. These directories
+ * should contain LV2 bundle directories (ie the search path is a list of
+ * parent directories of bundles, not a list of bundle directories).
+ *
+ * If \a search_path is NULL, \a model will be unmodified.
+ * Use of this function is \b not recommended. Use \ref slv2_model_load_all.
+ */
+void
+slv2_model_load_path(SLV2Model model,
+ const char* search_path);
+
+
+/** Load a specific bundle into \a model.
+ *
+ * \arg bundle_base_uri is a fully qualified URI to the bundle directory,
+ * with the trailing slash, eg. file:///usr/lib/lv2/someBundle/
+ *
+ * Normal hosts should not use this function.
+ *
+ * Hosts should not attach \em any long-term significance to bundle paths
+ * as there are no guarantees they will remain consistent whatsoever.
+ * This function should only be used by apps which ship with a special
+ * bundle (which it knows exists at some path because they are part of
+ * the same package).
+ */
+void
+slv2_model_load_bundle(SLV2Model model,
+ const char* bundle_base_uri);
+
+
+/** Add all plugins present in \a model to \a list.
+ *
+ * Returned plugins contain a reference to this model, model must not be
+ * destroyed until plugins are finished with.
+ */
+SLV2Plugins
+slv2_model_get_all_plugins(SLV2Model model);
+
+
+/** Get plugins filtered by a user-defined filter function.
+ *
+ * All plugins in \a model that return true when passed to \a include
+ * (a pointer to a function that takes an SLV2Plugin and returns a bool)
+ * will be added to \a list.
+ *
+ * Returned plugins contain a reference to this model, model must not be
+ * destroyed until plugins are finished with.
+ */
+SLV2Plugins
+slv2_model_get_plugins_by_filter(SLV2Model model,
+ bool (*include)(SLV2Plugin));
+
+
+#if 0
+/** Get plugins filtered by a user-defined SPARQL query.
+ *
+ * This is much faster than using slv2_model_get_plugins_by_filter with a
+ * filter function which calls the various slv2_plugin_* functions.
+ *
+ * \param query A valid SPARQL query which SELECTs a single variable, which
+ * should match the URI of plugins to be loaded.
+ *
+ * \b Example: Get all plugins with at least 1 audio input and output:
+<tt> \verbatim
+PREFIX : <http://lv2plug.in/ontology#>
+SELECT DISTINCT ?plugin WHERE {
+ ?plugin :port [ a :AudioPort; a :InputPort ] ;
+ :port [ a :AudioPort; a :OutputPort ] .
+}
+\endverbatim </tt>
+ *
+ * Returned plugins contain a reference to this model, model must not be
+ * destroyed until plugins are finished with.
+ */
+SLV2Plugins
+slv2_model_get_plugins_by_query(SLV2Model model,
+ const char* query);
+#endif
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __SLV2_MODEL_H__ */
+