64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* 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 <stdbool.h>
|
|
#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
|