91 lines
3.1 KiB
C
91 lines
3.1 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2020 by William Wilgus
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef OPEN_PLUGIN_H
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#define OPEN_PLUGIN_H
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/* Open_plugin module
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* OP stores and retrieves plugin path and parameters by key
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* from a dictionary file
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*
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* plugins can load other plugins
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* return rb->plugin_open(path, parameter);
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*/
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#ifndef __PCTOOL__
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/* open_plugin path lookup */
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#define OPEN_PLUGIN_DAT PLUGIN_DIR "/plugin.dat"
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#define OPEN_RBPLUGIN_DAT PLUGIN_DIR "/rb_plugins.dat"
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#define OPEN_PLUGIN_BUFSZ MAX_PATH
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#define OPEN_PLUGIN_NAMESZ 32
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enum {
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OPEN_PLUGIN_LANG_INVALID = (-1),
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OPEN_PLUGIN_LANG_IGNORE = (-2),
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OPEN_PLUGIN_LANG_IGNOREALL = (-3),
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OPEN_PLUGIN_NOT_FOUND = (-1),
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OPEN_PLUGIN_NEEDS_FLUSHED = (-2),
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};
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struct open_plugin_entry_t
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{
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/* hash lang_id checksum need to be the first items */
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uint32_t hash;
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int32_t lang_id;
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uint32_t checksum;
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char name[OPEN_PLUGIN_NAMESZ+1];
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/*char key[OPEN_PLUGIN_BUFSZ+1];*/
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char path[OPEN_PLUGIN_BUFSZ+1];
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char param[OPEN_PLUGIN_BUFSZ+1];
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};
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#define OPEN_PLUGIN_CHECKSUM (uint32_t) \
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( \
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(sizeof(struct open_plugin_entry_t) << 16) + \
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offsetof(struct open_plugin_entry_t, hash) + \
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offsetof(struct open_plugin_entry_t, lang_id) + \
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offsetof(struct open_plugin_entry_t, checksum) + \
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offsetof(struct open_plugin_entry_t, name) + \
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/*offsetof(struct open_plugin_entry_t, key)+*/ \
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offsetof(struct open_plugin_entry_t, path) + \
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offsetof(struct open_plugin_entry_t, param))
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#define OPEN_PLUGIN_SEED 0x811C9DC5; //seed, 2166136261;
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inline static void open_plugin_get_hash(const char *key, uint32_t *hash)
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{
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/* Calculate modified FNV1a hash of string */
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const uint32_t p = 16777619;
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*hash = OPEN_PLUGIN_SEED;
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while(*key)
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*hash = (*key++ ^ *hash) * p;
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}
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#ifndef PLUGIN
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extern struct open_plugin_entry_t open_plugin_entry;
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uint32_t open_plugin_add_path(const char *key, const char *plugin, const char *parameter);
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int open_plugin_get_entry(const char *key, struct open_plugin_entry_t *entry);
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void open_plugin_browse(const char *key);
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int open_plugin_run(const char *key);
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void open_plugin_cache_flush(void); /* flush to disk */
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#endif
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#endif /*ndef __PCTOOL__ */
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#endif /* OPEN_PLUGIN_H */
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