1 files changed, 66 insertions, 0 deletions

diff --git a/apps/open_plugin.h b/apps/open_plugin.h
new file mode 100644
index 0000000000..2d8a527073
--- /dev/null
+++ b/apps/open_plugin.h
@@ -0,0 +1,66 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2020 by William Wilgus
+ *
+ * This program 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef OPEN_PLUGIN_H
+#define OPEN_PLUGIN_H
+
+/* Open_plugin module
+ * OP stores and retrieves plugin path and parameters by key
+ * from a dictionary file
+ *
+ * plugins can load other plugins
+ * return rb->plugin_open(path, parameter);
+ */
+
+#ifndef __PCTOOL__
+/* open_plugin path lookup */
+#define OPEN_PLUGIN_DAT PLUGIN_DIR "/plugin.dat"
+#define OPEN_PLUGIN_BUFSZ MAX_PATH
+#define OPEN_PLUGIN_NAMESZ 32
+struct open_plugin_entry_t
+{
+    uint32_t hash;
+    int32_t  lang_id;
+    char name[OPEN_PLUGIN_NAMESZ+1];
+    /*char key[OPEN_PLUGIN_BUFSZ+1];*/
+    char path[OPEN_PLUGIN_BUFSZ+1];
+    char param[OPEN_PLUGIN_BUFSZ+1];
+};
+
+inline static void open_plugin_get_hash(const char *key, uint32_t *hash)
+{
+    /* Calculate modified FNV1a hash of string */
+    const uint32_t p = 16777619;
+    *hash = 0x811C9DC5; //seed, 2166136261;
+    while(*key)
+        *hash = (*key++ ^ *hash) * p;
+}
+
+#ifndef PLUGIN
+extern struct open_plugin_entry_t open_plugin_entry;
+uint32_t open_plugin_add_path(const char *key, const char *plugin, const char *parameter);
+int open_plugin_get_entry(const char *key, struct open_plugin_entry_t *entry);
+void open_plugin_browse(const char *key);
+void open_plugin_remove(const char *key);
+int open_plugin_run(const char *key);
+#endif
+
+#endif /*ndef __PCTOOL__ */
+#endif /* OPEN_PLUGIN_H */