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1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id
9 *
10 * Copyright (C) 2008 by Akio Idehara
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21#ifndef _RESIZE_H_
22#define _RESIZE_H_
23
24#include "config.h"
25#include "lcd.h"
26
27/****************************************************************
28 * resize_on_load()
29 *
30 * resize bitmap on load with scaling
31 *
32 * If HAVE_LCD_COLOR then this func use smooth scaling algorithm
33 * - downscaling both way use "Area Sampling"
34 * if IMG_RESIZE_BILINER or IMG_RESIZE_NEAREST is NOT set
35 * - otherwise "Bilinear" or "Nearest Neighbour"
36 *
37 * If !(HAVE_LCD_COLOR) then use simple scaling algorithm "Nearest Neighbour"
38 *
39 * return -1 for error
40 ****************************************************************/
41
42/* nothing needs the on-stack buffer right now */
43#define MAX_SC_STACK_ALLOC 0
44#define HAVE_UPSCALER 1
45
46struct img_part {
47 int len;
48 struct uint8_rgb* buf;
49};
50
51int resize_on_load(struct bitmap *bm, bool dither,
52 struct dim *src,
53 struct rowset *tmp_row, bool remote,
54#ifdef HAVE_LCD_COLOR
55 unsigned char *buf, unsigned int len,
56#endif
57 struct img_part* (*store_part)(void *args),
58 bool (*skip_lines)(void *args, unsigned int lines),
59 void *args);
60#endif /* _RESIZE_H_ */