Atlas - SDL_syspower.c
Home / ext / SDL2 / src / power / haiku
Lines: 1 | Size: 4013 bytes
[Download] [Show on GitHub] [Search similar files] [Raw] [Raw (proxy)] 
[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2018 Sam Lantinga <[email protected]>
4
5  This software is provided 'as-is', without any express or implied
6  warranty.  In no event will the authors be held liable for any damages
7  arising from the use of this software.
8
9  Permission is granted to anyone to use this software for any purpose,
10  including commercial applications, and to alter it and redistribute it
11  freely, subject to the following restrictions:
12
13  1. The origin of this software must not be misrepresented; you must not
14     claim that you wrote the original software. If you use this software
15     in a product, an acknowledgment in the product documentation would be
16     appreciated but is not required.
17  2. Altered source versions must be plainly marked as such, and must not be
18     misrepresented as being the original software.
19  3. This notice may not be removed or altered from any source distribution.
20*/
21#include "../../SDL_internal.h"
22
23/* uses BeOS euc.jp apm driver. */
24/* !!! FIXME: does this thing even work on Haiku? */
25
26#ifndef SDL_POWER_DISABLED
27#if SDL_POWER_HAIKU
28
29#include <stdio.h>
30#include <stdlib.h>
31#include <unistd.h>
32#include <fcntl.h>
33#include <ctype.h>
34#include <drivers/Drivers.h>
35
36/* These values are from apm.h ... */
37#define APM_DEVICE_PATH "/dev/misc/apm"
38#define APM_FUNC_OFFSET 0x5300
39#define APM_FUNC_GET_POWER_STATUS 10
40#define APM_DEVICE_ALL 1
41#define APM_BIOS_CALL (B_DEVICE_OP_CODES_END + 3)
42
43#include "SDL_power.h"
44
45SDL_bool
46SDL_GetPowerInfo_Haiku(SDL_PowerState * state, int *seconds, int *percent)
47{
48    const int fd = open("/dev/misc/apm", O_RDONLY);
49    SDL_bool need_details = SDL_FALSE;
50    uint16 regs[6];
51    uint8 ac_status;
52    uint8 battery_status;
53    uint8 battery_flags;
54    uint8 battery_life;
55    uint32 battery_time;
56    int rc;
57
58    if (fd == -1) {
59        return SDL_FALSE;       /* maybe some other method will work? */
60    }
61
62    memset(regs, '\0', sizeof(regs));
63    regs[0] = APM_FUNC_OFFSET + APM_FUNC_GET_POWER_STATUS;
64    regs[1] = APM_DEVICE_ALL;
65    rc = ioctl(fd, APM_BIOS_CALL, regs);
66    close(fd);
67
68    if (rc < 0) {
69        return SDL_FALSE;
70    }
71
72    ac_status = regs[1] >> 8;
73    battery_status = regs[1] & 0xFF;
74    battery_flags = regs[2] >> 8;
75    battery_life = regs[2] & 0xFF;
76    battery_time = (uint32) regs[3];
77
78    /* in theory, _something_ should be set in battery_flags, right? */
79    if (battery_flags == 0x00) {        /* older APM BIOS? Less fields. */
80        battery_time = 0xFFFF;
81        if (battery_status == 0xFF) {
82            battery_flags = 0xFF;
83        } else {
84            battery_flags = (1 << battery_status);
85        }
86    }
87
88    if ((battery_time != 0xFFFF) && (battery_time & (1 << 15))) {
89        /* time is in minutes, not seconds */
90        battery_time = (battery_time & 0x7FFF) * 60;
91    }
92
93    if (battery_flags == 0xFF) {        /* unknown state */
94        *state = SDL_POWERSTATE_UNKNOWN;
95    } else if (battery_flags & (1 << 7)) {      /* no battery */
96        *state = SDL_POWERSTATE_NO_BATTERY;
97    } else if (battery_flags & (1 << 3)) {      /* charging */
98        *state = SDL_POWERSTATE_CHARGING;
99        need_details = SDL_TRUE;
100    } else if (ac_status == 1) {
101        *state = SDL_POWERSTATE_CHARGED;        /* on AC, not charging. */
102        need_details = SDL_TRUE;
103    } else {
104        *state = SDL_POWERSTATE_ON_BATTERY;     /* not on AC. */
105        need_details = SDL_TRUE;
106    }
107
108    *percent = -1;
109    *seconds = -1;
110    if (need_details) {
111        const int pct = (int) battery_life;
112        const int secs = (int) battery_time;
113
114        if (pct != 255) {       /* 255 == unknown */
115            *percent = (pct > 100) ? 100 : pct; /* clamp between 0%, 100% */
116        }
117        if (secs != 0xFFFF) {   /* 0xFFFF == unknown */
118            *seconds = secs;
119        }
120    }
121
122    return SDL_TRUE;            /* the definitive answer if APM driver replied. */
123}
124
125#endif /* SDL_POWER_HAIKU */
126#endif /* SDL_POWER_DISABLED */
127
128/* vi: set ts=4 sw=4 expandtab: */
129
[FILE END]
(C) 2025 0x4248
(C) 2025 4248 Media and 4248 Systems, All part of 0x4248
See LICENCE files for more information. Not all files are by 0x4248 always check Licencing.