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1 | /* | |
2 | * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de> | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #include "common.h" | |
8 | #include "background.h" | |
9 | ||
10 | ||
11 | #define BG_FUNC_MAX 5 | |
12 | ||
13 | static struct { | |
14 | bg_func fct; | |
15 | int param; | |
16 | } func_tab[BG_FUNC_MAX]; | |
17 | ||
18 | static int_fast8_t fcount; | |
19 | ||
20 | int bg_register(bg_func f, int initval) | |
21 | { | |
22 | if (fcount < BG_FUNC_MAX) { | |
23 | func_tab[fcount].fct = f; | |
24 | func_tab[fcount].param = initval; | |
25 | return ++fcount - 1; | |
26 | } | |
27 | return -1; | |
28 | } | |
29 | ||
30 | int bg_setstat(int handle, int val) | |
31 | { | |
32 | if (handle < fcount) { | |
33 | func_tab[handle].param = val; | |
34 | return 1; | |
35 | } | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | ||
41 | int bg_getstat(int handle) | |
42 | { | |
43 | if (handle < fcount) { | |
44 | return func_tab[handle].param; | |
45 | } | |
46 | return 0; | |
47 | } | |
48 | ||
49 | ||
50 | void bg_shed(void) | |
51 | { | |
52 | static int_fast8_t current; | |
53 | ||
54 | if (func_tab[current].fct) { | |
55 | int v = func_tab[current].fct(func_tab[current].param); | |
56 | func_tab[current].param = v; | |
57 | } | |
58 | if (++current >= fcount) | |
59 | current = 0; | |
60 | } |