1 files changed, 75 insertions, 0 deletions
diff --git a/lv2/ns/ext/atom/forge.h b/lv2/ns/ext/atom/forge.h
new file mode 100644
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+++ b/lv2/ns/ext/atom/forge.h
@@ -0,0 +1,75 @@
+/*
+  Copyright 2008-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/**
+   @file forge.h Helper constructor functions for LV2 atoms.
+*/
+
+#ifndef LV2_ATOM_FORGE_H
+#define LV2_ATOM_FORGE_H
+
+#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
+#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	uint32_t ID;
+	uint32_t Message;
+	uint32_t Property;
+} LV2_Atom_Forge;
+
+static inline LV2_Atom_Forge*
+lv2_atom_forge_new(LV2_URID_Map* map)
+{
+	LV2_Atom_Forge* forge = (LV2_Atom_Forge*)malloc(sizeof(LV2_Atom_Forge));
+	forge->ID       = map->map(map->handle, LV2_ATOM_URI "#ID");
+	forge->Message  = map->map(map->handle, LV2_ATOM_URI "#Message");
+	forge->Property = map->map(map->handle, LV2_ATOM_URI "#Property");
+	return forge;
+}
+
+static inline void
+lv2_atom_forge_free(LV2_Atom_Forge* forge)
+{
+	free(forge);
+}
+
+static inline LV2_Atom_ID
+lv2_atom_forge_make_id(LV2_Atom_Forge* forge, uint32_t id)
+{
+	const LV2_Atom_ID atom = { forge->ID, sizeof(uint32_t), id };
+	return atom;
+}
+
+static inline void
+lv2_atom_forge_set_message(LV2_Atom_Forge* forge,
+                           LV2_Thing*      msg,
+                           uint32_t        id)
+{
+	msg->type    = forge->Message;
+	msg->size    = sizeof(LV2_Thing) - sizeof(LV2_Atom);
+	msg->context = 0;
+	msg->id      = id;
+}
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  /* LV2_ATOM_FORGE_H */