/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2003 Tat Tang * * 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 _FONT_CACHE_H_ #define _FONT_CACHE_H_ #include #include "lru.h" /******************************************************************************* * ******************************************************************************/ struct font_cache { struct lru _lru; int _size; int _capacity; int _prev_char_code; int _prev_result; short *_index; /* index of lru handles in char_code order */ }; struct font_cache_entry { unsigned short _char_code; unsigned char width; unsigned char bitmap[1]; /* place holder */ }; /* void (*f) (void*, struct font_cache_entry*); */ /* Create an auto sized font cache from buf */ void font_cache_create( struct font_cache* fcache, void* buf, int buf_size, int bitmap_bytes_size); /* Get font cache entry for the given char_code * * cache_only: true if only a cache lookup should be performed and loading on miss should be avoided * * Note: With cache_only this can return NULL, which otherwise never happens */ struct font_cache_entry* font_cache_get( struct font_cache* fcache, unsigned short char_code, bool cache_only, void (*callback) (struct font_cache_entry* p, void *callback_data), void *callback_data); #endif